/* roulang page: index */
:root {
  --color-brand: #1266E2;
  --color-brand-dark: #0D4FAF;
  --color-brand-light: #EAF3FF;
  --color-ink: #0C1A33;
  --color-body: #46586F;
  --color-line: #DCE8F5;
  --color-green: #00A870;
  --color-orange: #FF7A45;
  --color-yellow: #F5C451;
  --color-bg: #F6F9FC;
  --color-card: #FFFFFF;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 16px;
  --radius-pill: 999px;
  --shadow-base: 0 1px 2px rgba(12, 26, 51, .04), 0 6px 16px rgba(12, 26, 51, .06);
  --shadow-hover: 0 18px 36px rgba(12, 26, 51, .10);
  --gap-section: clamp(56px, 8vw, 112px);
  --gap-card: 24px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans", sans-serif;
}

html,
body {
  font-family: var(--font-main);
  font-size: 16px;
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.75;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

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

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

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

a:hover,
a:focus {
  color: var(--color-brand-dark);
  text-decoration: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-ink);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 .5em;
}

p {
  margin: 0 0 1rem;
  font-size: 16px;
}

ul,
ol {
  padding-left: 1.25rem;
}

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

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

.text-center {
  text-align: center;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(12, 26, 51, .04);
  transition: box-shadow .2s ease;
}

.site-header.is-stuck {
  box-shadow: 0 4px 18px rgba(12, 26, 51, .06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}

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

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1266E2 0%, #3A8BFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 4px 10px rgba(18, 102, 226, .20);
}

.brand-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

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

.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 0 4px;
}

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

.chip-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-body);
  background: transparent;
  border: 1px solid transparent;
  transition: all .18s ease;
  white-space: nowrap;
  min-height: 40px;
}

.chip-link:hover {
  color: var(--color-brand-dark);
  background: var(--color-brand-light);
}

.chip-link.active {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(18, 102, 226, .12);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 22px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all .18s ease;
  font-family: var(--font-main);
  line-height: 1;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: 0 4px 12px rgba(18, 102, 226, .22);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-brand-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(18, 102, 226, .28);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--color-bg);
  border-color: var(--color-brand);
  color: var(--color-brand);
}

.btn-large {
  height: 50px;
  padding: 0 32px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-icon-only {
  width: 42px;
  height: 42px;
  padding: 0;
}

.mobile-menu-toggle {
  display: none;
}

.hero {
  background: #F0F7FF;
  border-bottom: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
}

.hero-inner {
  padding: clamp(48px, 6vw, 80px) 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 102, 226, .10);
  border: 1px solid rgba(18, 102, 226, .18);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  color: var(--color-brand-dark);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-badge .live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  display: inline-block;
  box-shadow: 0 0 0 3px rgba(0, 168, 112, .15);
}

.hero-title {
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.18;
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 4px;
  letter-spacing: -.01em;
}

.hero-title .highlight {
  color: var(--color-brand);
}

.hero-subtitle {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--color-body);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.hero-meta {
  margin-top: 36px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--color-body);
  font-size: 14px;
}

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

.hero-meta i {
  color: var(--color-brand);
}

.hero-cover {
  position: relative;
}

.hero-cover img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-hover);
  transform: perspective(1200px) rotateY(-4deg) rotateX(1deg);
  border: 4px solid #fff;
}

.section-eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-brand);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 10px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-body);
  max-width: 640px;
  line-height: 1.7;
}

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.section-head-left {
  flex: 1;
  min-width: 280px;
}

.section-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .18s ease;
}

.section-link:hover {
  color: var(--color-brand-dark);
  gap: 10px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap-card);
}

.category-card {
  background: var(--color-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-base);
  transition: all .22s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

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

.category-card-img {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-bg);
}

.category-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}

.category-card:hover .category-card-img img {
  transform: scale(1.04);
}

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

.category-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 10px;
}

.category-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-ink);
}

.category-card-desc {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 12px;
  flex-grow: 1;
}

.text-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all .18s ease;
}

.text-link:hover {
  gap: 8px;
  color: var(--color-brand-dark);
}

.latest-news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-base);
  overflow: hidden;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 24px;
  border-bottom: 1px solid #EDF2F8;
  transition: all .18s ease;
  text-decoration: none;
  background: trasnparent;
}

.news-item:last-child {
  border-bottom: none;
}

.news-item:hover {
  background: #FAFCFF;
}

.news-date {
  text-align: center;
  flex-shrink: 0;
  background: var(--color-brand-light);
  border-radius: 10px;
  padding: 8px 10px;
  min-width: 54px;
}

.news-date .d {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-brand);
  line-height: 1.2;
  display: block;
}

.news-date .m {
  font-size: 12px;
  color: var(--color-body);
  display: block;
  line-height: 1.2;
}

.news-info {
  flex: 1;
  min-width: 0;
}

.news-tag-line {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  line-height: 1.6;
}

.badge-blue {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
}

.badge-green {
  background: rgba(0, 168, 112, .10);
  color: #00805A;
}

.badge-orange {
  background: rgba(255, 122, 69, .10);
  color: #D9541D;
}

.badge-yellow {
  background: rgba(245, 196, 81, .16);
  color: #A67A00;
}

.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color .18s;
}

.news-item:hover .news-title {
  color: var(--color-brand);
}

.news-desc {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-meta {
  font-size: 13px;
  color: var(--color-body);
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-arrow {
  color: var(--color-body);
  font-size: 14px;
  flex-shrink: 0;
  transition: all .18s ease;
}

.news-item:hover .news-arrow {
  color: var(--color-brand);
  transform: translateX(4px);
}

.news-date-item {
  color: var(--color-body);
  font-size: 13px;
  white-space: nowrap;
  flex-shrink: 0;
}

.special-section {
  background: #fff;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.special-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.special-card {
  display: flex;
  gap: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 18px;
  border: 1px solid transparent;
  transition: all .2s ease;
}

.special-card:hover {
  border-color: var(--color-line);
  box-shadow: var(--shadow-base);
}

.special-card-img {
  border-radius: 12px;
  overflow: hidden;
  width: 180px;
  min-height: 120px;
  flex-shrink: 0;
}

.special-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.special-card-body {
  padding: 8px 0 4px;
}

.special-card-tag {
  font-size: 12px;
  color: var(--color-brand);
  font-weight: 600;
  margin-bottom: 6px;
  display: inline-block;
}

.special-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 6px;
  line-height: 1.4;
}

.special-card-desc {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.6;
}

.stats-band {
  background: linear-gradient(135deg, #0C1A33 0%, #173050 100%);
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  overflow: hidden;
}

.stats-band::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity: .06;
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 16px 8px;
}

.stat-number {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  display: block;
  font-feature-settings: "tnum";
}

.stat-label {
  font-size: 14px;
  color: #A8BBD8;
  display: block;
  margin-top: 4px;
}

.info-module {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}

.info-module-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-module-title i {
  color: var(--color-brand);
}

.recommend-list {
  display: flex;
  flex-direction: column;
}

.recommend-item {
  padding: 14px 0;
  border-bottom: 1px solid #EFF4FA;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  text-decoration: none;
}

.recommend-item:last-child {
  border-bottom: none;
}

.recommend-item-left {
  width: 100px;
  flex-shrink: 0;
  aspect-ratio: 16/10;
  border-radius: 6px;
  overflow: hidden;
}

.recommend-item-left img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.recommend-item-body {
  flex: 1;
}

.recommend-item-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .18s;
}

.recommend-item:hover .recommend-item-title {
  color: var(--color-brand);
}

.recommend-item-meta {
  font-size: 12px;
  color: var(--color-body);
  margin-top: 4px;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-step {
  position: relative;
  padding: 0 0 28px 28px;
  border-left: 2px solid var(--color-line);
  margin-left: 8px;
}

.timeline-step:last-child {
  padding-bottom: 0;
}

.timeline-step::before {
  content: "";
  position: absolute;
  left: -8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-brand);
  top: 2px;
  box-shadow: 0 0 0 4px rgba(18, 102, 226, .12);
}

.tl-num {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-brand);
}

.tl-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin: 2px 0 4px;
}

.tl-desc {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 4px;
}

.tl-meta {
  font-size: 12px;
  color: var(--color-body);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  margin-bottom: 10px;
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(12, 26, 51, .03);
  transition: all .18s ease;
}

.faq-item:hover {
  border-color: #C3D9F2;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-main);
  transition: background .18s ease;
}

.faq-question:hover {
  background: #FAFCFF;
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  font-size: 22px;
  color: var(--color-body);
  line-height: 1;
  transition: transform .2s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 0;
  max-height: 0;
  overflow: hidden;
  transition: all .2s ease;
}

.faq-item.open .faq-answer {
  padding: 0px 24px 20px;
  max-height: 500px;
}

.faq-collapse {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  overflow: hidden;
  box-shadow: var(--shadow-base);
}

.faq-collapse-item {
  border-bottom: 1px solid var(--color-line);
}

.faq-collapse-item:last-child {
  border-bottom: none;
}

.faq-collapse-btn {
  width: 100%;
  background: #fff;
  border: none;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  text-align: left;
  font-family: var(--font-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: background .18s;
}

.faq-collapse-btn:hover {
  background: var(--color-brand-light);
}

.faq-collapse-btn .faq-toggle-icon {
  font-size: 18px;
  color: var(--color-brand);
  transition: transform .2s ease;
  flex-shrink: 0;
}

.faq-collapse-content {
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: all .22s ease;
}

.faq-collapse-content-inner {
  padding: 0px 24px 20px;
  font-size: 15px;
  color: var(--color-body);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-item.active .faq-collapse-content {
  max-height: 300px;
}

.cta-section {
  background: #fff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-line);
  overflow: hidden;
  background-image: linear-gradient(to right,
      transparent 0%, rgba(18, 102, 226, .02) 30%, rgba(18, 102, 226, .04) 70%, transparent 100%);
}

.cta-inner {
  padding: clamp(36px, 5vw, 64px);
  text-align: center;
  position: relative;
}

.cta-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-sub {
  font-size: 16px;
  color: var(--color-body);
  max-width: 560px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.empty-state {
  padding: 60px 30px;
  text-align: center;
  color: var(--color-body);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-height: 240px;
  justify-content: center;
}

.empty-state i {
  font-size: 48px;
  color: #C7D7E8;
  margin-bottom: 8px;
}

.empty-state-text {
  font-size: 15px;
  color: var(--color-body);
}

.site-footer {
  background: #0C1A33;
  color: #AEC2DE;
  padding-top: 64px;
  padding-bottom: 40px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}

.footer-brand {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo-square {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1266E2, #3A8BFF);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #8FA4C2;
  max-width: 340px;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .02em;
}

.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav-list li a {
  color: #8FA4C2;
  font-size: 14px;
  transition: all .18s ease;
}

.footer-nav-list li a:hover {
  color: #fff;
  padding-left: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #6D85A8;
}

.footer-copyright a {
  color: #8FA4C2;
}

.mobile-chips-wrap {
  display: none;
}

@media screen and (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .special-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .stats-band {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .header-cta-text {
    display: none;
  }
  .hero-cover {
    margin-top: 32px;
  }
}

@media screen and (max-width: 640px) {
  .container,
  .site-container {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 18px;
  }
  .brand-desc {
    display: none;
  }
  .header-inner {
    height: auto;
    min-height: 62px;
  }
  .header-cta-text {
    display: none;
  }
  .mobile-menu-toggle {
    display: flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-line);
    border-radius: 8px;
    color: var(--color-ink);
    font-size: 18px;
    cursor: pointer;
  }
  .nav-chips {
    display: none;
  }
  .nav-container-mobile {
    background: #fff;
    border-bottom: 1px solid var(--color-line);
    padding: 8px 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .mobile-chips-inline {
    display: flex;
    gap: 6px;
  }
  .chip-link {
    padding: 6px 14px;
    font-size: 13px;
    min-height: 36px;
  }
  .hero {
    padding-top: 20px;
  }
  .hero-title {
    font-size: 30px;
    line-height: 1.25;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .cta-buttons .btn {
    flex: 1;
    min-width: 140px;
  }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    gap: 12px;
  }
  .news-meta {
    display: flex;
    width: 100%;
    justify-content: space-between;
  }
  .news-desc {
    display: none;
  }
  .news-title {
    white-space: normal;
    line-height: 1.5;
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
  }
  .special-card {
    flex-direction: column;
  }
  .special-card-img {
    width: 100%;
    aspect-ratio: 16/9;
  }
  .recommend-item-left {
    width: 80px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media screen and (max-width: 520px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
  .stats-band {
    grid-template-columns: 1fr 1fr;
  }
  .btn-large {
    width: 100%;
  }
  .section-head-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media screen and (min-width: 641px) and (max-width: 1024px) {
  .mobile-chips-wrap {
    display: none;
  }
  .nav-chips {
    display: flex;
  }
  .nav-chips {
    gap: 4px;
  }
  .chip-link {
    padding: 7px 14px;
    font-size: 13px;
  }
}

.header-nav-area {
  flex: 1;
  display: flex;
  justify-content: center;
}

.btn-fav {
  background: transparent;
  border: 1.5px solid var(--color-line);
  color: var(--color-ink);
}

.btn-fav.active {
  background: rgba(255, 122, 69, .10);
  border-color: var(--color-orange);
  color: #D9541D;
}

.fav-feedback {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-green);
  opacity: 0;
  transition: opacity .3s;
}

.fav-feedback.show {
  opacity: 1;
}

.vs-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-base);
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: center;
}

.vs-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  transition: all .18s ease;
}

.data-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 14px;
  color: var(--color-body);
}

.data-chip b {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-brand);
  font-feature-settings: "tnum";
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}

input,
button {
  font-family: var(--font-main);
}

@media screen and (max-width: 640px) {
    .nav-desktop .nav-chips{display:none;}
    .mobile-chips-wrap{display:block;}
    .nav-desktop{display:none;}
  }
  @media screen and (min-width: 641px) {
    .nav-desktop{display:flex;}
    .mobile-chips-wrap{display:none!important;}
  }

/* roulang page: category1 */
:root {
      --color-brand: #1266E2;
      --color-brand-dark: #0D4FAF;
      --color-brand-light: #EAF3FF;
      --color-ink: #0C1A33;
      --color-body: #46586F;
      --color-line: #DCE8F5;
      --color-green: #00A870;
      --color-orange: #FF7A45;
      --color-yellow: #F5C451;
      --color-bg: #F6F9FC;
      --color-white: #FFFFFF;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --shadow-card: 0 1px 2px rgba(12,26,51,.04), 0 6px 16px rgba(12,26,51,.06);
      --shadow-hover: 0 18px 36px rgba(12,26,51,.10);
      --gap-section: clamp(60px, 8vw, 108px);
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      background: var(--color-bg);
      color: var(--color-ink);
      padding-top: 74px;
      -webkit-font-smoothing: antialiased;
    }

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

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

    a {
      color: inherit;
      text-decoration: none;
    }
    a:hover {
      color: inherit;
    }

    button {
      border: none;
      background: none;
      cursor: pointer;
      font-family: inherit;
    }

    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 90;
      background: rgba(255,255,255,.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--color-line);
      transition: box-shadow .3s ease;
    }
    .site-header.scrolled {
      box-shadow: 0 12px 32px rgba(12,26,51,.08);
    }
    .site-header .container {
      height: 100%;
    }
    .header-inner {
      display: flex;
      align-items: center;
      gap: 14px;
      min-height: 74px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .brand-logo {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: var(--color-ink);
      color: #fff;
      font-size: 22px;
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      letter-spacing: 0;
    }
    .brand-text {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: .02em;
      color: var(--color-ink);
      white-space: nowrap;
      line-height: 1.2;
    }
    .brand-text .dot {
      color: var(--color-brand);
    }
    .header-nav-area {
      flex: 1;
      min-width: 0;
    }
    .nav-chips {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      list-style: none;
      margin: 0;
      padding: 0;
      white-space: nowrap;
    }
    .chip-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 8px 20px;
      border-radius: 999px;
      color: var(--color-body);
      font-size: 14px;
      font-weight: 500;
      transition: background .2s ease, color .2s ease, box-shadow .2s ease;
    }
    .chip-link:hover {
      background: #F0F5FC;
      color: var(--color-brand-dark);
    }
    .chip-link:focus-visible {
      outline: 2px solid var(--color-brand);
      outline-offset: 2px;
    }
    .chip-link.active {
      background: var(--color-brand-light);
      color: var(--color-brand-dark);
      font-weight: 700;
    }
    .header-actions {
      display: flex;
      align-items: center;
      flex-shrink: 0;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 20px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
      line-height: 1;
      border: 1px solid transparent;
      transition: all .2s ease;
      cursor: pointer;
      white-space: nowrap;
    }
    .btn:focus-visible {
      outline: 3px solid rgba(18,102,226,.35);
      outline-offset: 2px;
    }
    .btn-primary {
      background: var(--color-brand);
      color: #fff;
      border-color: var(--color-brand);
      box-shadow: 0 6px 14px rgba(18,102,226,.22);
    }
    .btn-primary:hover {
      background: var(--color-brand-dark);
      border-color: var(--color-brand-dark);
      transform: translateY(-1px);
      box-shadow: 0 10px 22px rgba(18,102,226,.26);
    }
    .btn-primary.is-saved {
      background: var(--color-green);
      border-color: var(--color-green);
    }
    .btn-outline {
      background: #fff;
      color: var(--color-brand-dark);
      border-color: #BFD7F5;
    }
    .btn-outline:hover {
      border-color: var(--color-brand);
      color: var(--color-brand);
      background: var(--color-brand-light);
    }
    .btn-light {
      background: rgba(255,255,255,.14);
      border: 1px solid rgba(255,255,255,.35);
      color: #fff;
    }
    .btn-light:hover {
      background: rgba(255,255,255,.24);
      color: #fff;
    }

    .category-hero {
      background: linear-gradient(104deg, rgba(255,255,255,.98) 0%, rgba(247,251,255,.92) 44%, rgba(215,233,255,.78) 100%), url('/assets/images/backpic/back-1.webp') no-repeat right center;
      background-size: cover;
      border-bottom: 1px solid var(--color-line);
      padding: 84px 0 72px;
      position: relative;
      overflow: hidden;
    }
    .category-hero .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      background: #fff;
      border: 1px solid #D7E6FA;
      border-radius: 999px;
      color: var(--color-brand-dark);
      font-size: 13px;
      font-weight: 600;
      padding: 7px 14px;
      margin-bottom: 20px;
      box-shadow: 0 4px 10px rgba(18,102,226,.06);
    }
    .category-hero .hero-kicker i {
      color: var(--color-green);
    }
    .category-hero h1 {
      font-size: clamp(38px, 6vw, 56px);
      font-weight: 800;
      line-height: 1.18;
      margin: 0 0 20px;
      color: var(--color-ink);
      letter-spacing: -.02em;
    }
    .category-hero .lead {
      max-width: 700px;
      font-size: 17px;
      line-height: 1.9;
      color: var(--color-body);
      margin: 0 0 30px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      margin-bottom: 34px;
    }
    .hero-facts {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      padding-top: 28px;
      border-top: 1px solid rgba(12,26,51,.08);
      max-width: 720px;
    }
    .hero-fact-item {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }
    .hero-fact-item b {
      font-size: 24px;
      font-weight: 800;
      line-height: 1.2;
      color: var(--color-ink);
      font-variant-numeric: tabular-nums;
    }
    .hero-fact-item span {
      font-size: 13px;
      color: var(--color-body);
    }
    .hero-fact-item b em {
      font-style: normal;
      color: var(--color-brand);
    }

    .section {
      padding: var(--gap-section) 0;
      scroll-margin-top: 90px;
    }
    .section-white {
      background: #fff;
    }
    .section-tint {
      background: #F1F7FD;
    }
    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 36px;
    }
    .section-head .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      font-weight: 700;
      color: var(--color-brand);
      letter-spacing: .1em;
      margin-bottom: 8px;
    }
    .section-head .eyebrow::before {
      content: "";
      display: inline-block;
      width: 22px;
      height: 2px;
      border-radius: 4px;
      background: var(--color-orange);
    }
    .section-head h2 {
      font-size: clamp(24px, 3vw, 32px);
      font-weight: 800;
      line-height: 1.32;
      letter-spacing: -.01em;
      color: var(--color-ink);
      margin: 0;
    }
    .section-head .sub {
      margin-top: 8px;
      color: var(--color-body);
      max-width: 720px;
      font-size: 15px;
    }
    .section-head .head-action {
      flex-shrink: 0;
    }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--color-brand);
      font-weight: 600;
      font-size: 14px;
      border-bottom: 1px solid transparent;
      transition: border .2s ease;
    }
    .text-link:hover {
      border-color: var(--color-brand);
    }

    .aggregate-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 24px;
    }
    .topic-card {
      background: #fff;
      border: 1px solid var(--color-line);
      border-radius: 18px;
      padding: 26px 22px 24px;
      box-shadow: var(--shadow-card);
      position: relative;
      overflow: hidden;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .topic-card::after {
      content: "";
      position: absolute;
      left: 22px;
      right: 22px;
      bottom: 0;
      height: 3px;
      border-radius: 4px 4px 0 0;
      background: transparent;
      transition: background .3s ease;
    }
    .topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #C6DDF8;
    }
    .topic-card:hover::after {
      background: var(--color-brand);
    }
    .topic-card .topic-num {
      font-size: 13px;
      font-weight: 700;
      color: var(--color-brand);
      letter-spacing: .06em;
      display: block;
      margin-bottom: 14px;
    }
    .topic-card .topic-icon {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: var(--color-brand-light);
      color: var(--color-brand-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
    }
    .topic-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--color-ink);
      margin: 0 0 8px;
    }
    .topic-card p {
      font-size: 14px;
      color: var(--color-body);
      line-height: 1.7;
      margin: 0 0 16px;
    }
    .topic-card .topic-meta {
      display: flex;
      align-items: center;
      gap: 6px;
      color: var(--color-body);
      font-size: 12px;
      background: #F5F8FC;
      border-radius: 999px;
      padding: 5px 12px;
      width: fit-content;
    }
    .topic-card .topic-meta i {
      color: var(--color-green);
    }

    .featured-split {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      align-items: stretch;
    }
    .featured-panel {
      border-radius: 22px;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-card);
    }
    .featured-panel .media {
      position: relative;
      height: 250px;
      overflow: hidden;
    }
    .featured-panel .media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .featured-panel:hover .media img {
      transform: scale(1.03);
    }
    .featured-panel .media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 30%, rgba(12,26,51,.55));
    }
    .featured-panel .tag-overlay {
      position: absolute;
      left: 16px;
      bottom: 14px;
      z-index: 2;
      font-size: 13px;
      font-weight: 700;
      background: rgba(255,255,255,.94);
      color: var(--color-ink);
      padding: 7px 14px;
      border-radius: 999px;
    }
    .featured-panel .body {
      padding: 24px;
    }
    .featured-panel .body h3 {
      font-size: 22px;
      font-weight: 800;
      margin: 0 0 10px;
      color: var(--color-ink);
    }
    .featured-panel .body p {
      color: var(--color-body);
      font-size: 14px;
      line-height: 1.75;
      margin: 0 0 18px;
    }
    .featured-panel .meta-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid var(--color-line);
      color: var(--color-body);
      font-size: 13px;
    }
    .score-link {
      color: var(--color-brand);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .editor-list {
      display: grid;
      gap: 14px;
    }
    .editor-row {
      display: flex;
      gap: 20px;
      align-items: center;
      background: #fff;
      border: 1px solid var(--color-line);
      border-radius: 16px;
      padding: 18px 20px;
      box-shadow: var(--shadow-card);
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .editor-row:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }
    .editor-row .row-index {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: var(--color-brand-light);
      color: var(--color-brand-dark);
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-size: 15px;
    }
    .editor-row .row-text {
      flex: 1;
      min-width: 0;
    }
    .editor-row .row-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--color-ink);
      margin-bottom: 4px;
      line-height: 1.5;
    }
    .editor-row .row-desc {
      font-size: 14px;
      color: var(--color-body);
      line-height: 1.65;
      white-space: normal;
    }
    .editor-row .row-arrow {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      border: 1px solid var(--color-line);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--color-brand);
      background: #fff;
      flex-shrink: 0;
      transition: all .2s ease;
    }
    .editor-row:hover .row-arrow {
      background: var(--color-brand);
      color: #fff;
      transform: translateX(3px);
      border-color: var(--color-brand);
    }

    .league-rank-band {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 16px;
    }
    .league-rank-card {
      border-radius: 20px;
      background: #fff;
      border: 1px solid var(--color-line);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .league-rank-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .league-rank-card .rank-top {
      height: 190px;
      position: relative;
      overflow: hidden;
    }
    .league-rank-card .rank-top img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .league-rank-card:hover .rank-top img {
      transform: scale(1.04);
    }
    .league-rank-card .rank-top::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(255,255,255,0) 20%, rgba(12,26,51,.72));
    }
    .league-rank-card .rank-type {
      position: absolute;
      left: 16px;
      bottom: 14px;
      z-index: 2;
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      background: rgba(255,255,255,.2);
      padding: 5px 12px;
      border-radius: 999px;
      backdrop-filter: blur(4px);
    }
    .league-rank-card .rank-body {
      padding: 20px;
    }
    .league-rank-card .rank-body h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 0 0 8px;
      color: var(--color-ink);
    }
    .league-rank-card .rank-body p {
      font-size: 14px;
      color: var(--color-body);
      margin: 0 0 16px;
      line-height: 1.7;
    }
    .league-rank-card .tagline-items {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .mini-tag {
      display: inline-flex;
      align-items: center;
      background: #F1F5F9;
      color: var(--color-body);
      border-radius: 8px;
      padding: 4px 9px;
      font-size: 12px;
    }

    .cta-band {
      background: #0C1A33;
      border-radius: 26px;
      overflow: hidden;
      padding: 56px 56px;
      position: relative;
      color: #fff;
      box-shadow: 0 24px 48px rgba(12,26,51,.16);
    }
    .cta-band::before {
      content: "";
      position: absolute;
      right: -90px;
      top: -80px;
      width: 320px;
      height: 320px;
      border-radius: 50%;
      border: 2px dashed rgba(255,255,255,.16);
    }
    .cta-band::after {
      content: "";
      position: absolute;
      right: 24px;
      bottom: -120px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.1);
    }
    .cta-band .cta-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      position: relative;
      z-index: 2;
    }
    .cta-band h2 {
      margin: 0 0 8px;
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 800;
      line-height: 1.3;
    }
    .cta-band p {
      margin: 0;
      color: rgba(255,255,255,.72);
      font-size: 15px;
    }
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      flex-shrink: 0;
    }

    .faq-wrap {
      margin-top: 40px;
    }
    .accordion {
      background: transparent;
      margin: 0;
    }
    .accordion-item {
      background: #fff !important;
      border: 1px solid var(--color-line) !important;
      border-radius: 16px !important;
      box-shadow: var(--shadow-card);
      margin-bottom: 14px !important;
      overflow: hidden;
      transition: border .2s ease, box-shadow .2s ease;
    }
    .accordion-item.is-active {
      border-color: #BFD9F8 !important;
      box-shadow: 0 8px 20px rgba(18,102,226,.08);
    }
    .accordion-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border: 0 !important;
      background: #fff !important;
      color: var(--color-ink) !important;
      font-size: 16px !important;
      font-weight: 700 !important;
      line-height: 1.6 !important;
      padding: 22px 24px !important;
      border-radius: 16px !important;
      position: relative;
      transition: background .2s ease;
    }
    .accordion-title::before {
      content: "\f067" !important;
      font-family: "Font Awesome 6 Free" !important;
      font-weight: 900;
      font-size: 15px;
      position: absolute;
      right: 22px !important;
      top: 50% !important;
      transform: translateY(-50%) rotate(0deg);
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: var(--color-brand-light);
      color: var(--color-brand);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform .2s ease;
    }
    .accordion-item.is-active .accordion-title::before {
      content: "\f068" !important;
      transform: translateY(-50%) rotate(180deg);
      background: var(--color-brand);
      color: #fff;
    }
    .accordion-content {
      border: 0 !important;
      background: #fff !important;
      padding: 4px 24px 24px !important;
      color: var(--color-body) !important;
      font-size: 15px;
      line-height: 1.85 !important;
    }

    .site-footer {
      background: #0C1A33;
      color: rgba(255,255,255,.72);
      margin-top: calc(var(--gap-section) - 20px);
    }
    .site-footer .container {
      padding-top: 58px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 36px;
    }
    .footer-brand {
      font-size: 22px;
      font-weight: 800;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
    }
    .footer-logo-square {
      width: 34px;
      height: 34px;
      border-radius: 9px;
      background: var(--color-brand);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 17px;
    }
    .footer-desc {
      font-size: 14px;
      line-height: 1.9;
      color: rgba(255,255,255,.58);
      max-width: 460px;
      margin: 0;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-nav-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 8px;
    }
    .footer-nav-list a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: rgba(255,255,255,.62);
      font-size: 14px;
      transition: color .2s ease;
    }
    .footer-nav-list a::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--color-brand);
      opacity: .7;
    }
    .footer-nav-list a:hover {
      color: #fff;
    }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      border-top: 1px solid rgba(255,255,255,.1);
      padding: 20px 0 24px;
      font-size: 13px;
      color: rgba(255,255,255,.45);
    }
    .footer-bottom a {
      color: rgba(255,255,255,.55);
    }
    .footer-bottom a:hover {
      color: #fff;
    }

    @media (max-width: 1024px) {
      .aggregate-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .league-rank-band {
        grid-template-columns: repeat(2, 1fr);
      }
      .featured-split {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 860px) {
      body {
        padding-top: 122px;
      }
      .site-header {
        height: auto;
        position: fixed;
      }
      .header-inner {
        flex-wrap: wrap;
        align-items: center;
        min-height: 62px;
        padding: 10px 0 0;
      }
      .brand {
        margin-right: auto;
      }
      .brand-logo {
        width: 38px;
        height: 38px;
        font-size: 18px;
      }
      .brand-text {
        font-size: 19px;
      }
      .header-nav-area {
        order: 10;
        width: 100%;
        flex: 0 0 100%;
        margin: 8px -20px 0;
        padding-bottom: 6px;
        overflow-x: auto;
      }
      .nav-chips {
        justify-content: flex-start;
        gap: 4px;
        padding: 0 20px;
      }
      .chip-link {
        min-height: 40px;
        padding: 7px 16px;
        font-size: 13px;
      }
      .header-actions .btn {
        width: 40px;
        padding: 0;
        border-radius: 50%;
        height: 40px;
      }
      .header-actions .header-cta-text {
        display: none;
      }
    }

    @media (max-width: 620px) {
      body {
        padding-top: 126px;
      }
      .category-hero {
        padding: 54px 0 44px;
      }
      .hero-actions {
        gap: 10px;
      }
      .hero-actions .btn {
        padding: 0 16px;
      }
      .aggregate-grid {
        grid-template-columns: 1fr;
      }
      .league-rank-band {
        grid-template-columns: 1fr;
      }
      .editor-row {
        flex-direction: column;
        align-items: flex-start;
        padding: 18px;
      }
      .editor-row .row-arrow {
        align-self: flex-end;
      }
      .featured-split {
        grid-template-columns: 1fr;
      }
      .cta-band {
        padding: 32px 24px;
        border-radius: 20px;
      }
      .cta-actions {
        flex-direction: column;
        width: 100%;
      }
      .cta-actions .btn {
        width: 100%;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .site-footer .container {
        padding-top: 44px;
      }
      .accordion-title {
        font-size: 15px !important;
        padding-right: 58px !important;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }
      *,
      *::before,
      *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
      }
    }

/* roulang page: article */
:root {
  --color-brand: #1266E2;
  --color-brand-dark: #0D4FAF;
  --color-brand-light: #EAF3FF;
  --color-ink: #0C1A33;
  --color-body: #46586F;
  --color-line: #DCE8F5;
  --color-green: #00A870;
  --color-orange: #FF7A45;
  --color-page: #F6F9FC;
  --radius-btn: 8px;
  --radius-card: 14px;
  --radius-large: 18px;
  --shadow-card: 0 1px 2px rgba(12,26,51,.04), 0 6px 16px rgba(12,26,51,.06);
  --shadow-hover: 0 18px 36px rgba(12,26,51,.10);
  --gap-section: clamp(56px, 8vw, 100px);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-ink);
  background: var(--color-page);
  -webkit-font-smoothing: antialiased;
}

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

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

a {
  color: var(--color-brand);
  text-decoration: none;
  transition: color .16s ease;
}

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

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

ul,
ol {
  list-style: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: #fff;
  border-bottom: 1px solid rgba(220, 232, 245, .75);
  box-shadow: 0 1px 8px rgba(12, 26, 51, .04);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  gap: 20px;
}

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

.brand-logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--color-brand-light);
  color: var(--color-brand);
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(18, 102, 226, .18);
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: .02em;
  white-space: nowrap;
}

.brand-text .dot {
  color: var(--color-brand);
  font-weight: 700;
}

.header-nav-area {
  display: flex;
  flex: 1;
  justify-content: center;
  min-width: 0;
}

.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.chip-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-body);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}

.chip-link:hover {
  color: var(--color-brand-dark);
  background: #f5f9ff;
}

.chip-link.active,
.chip-link.active:hover {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  border-color: rgba(18, 102, 226, .22);
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-shrink: 0;
}

.header-actions svg {
  width: 16px;
  height: 16px;
  margin-right: 7px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: all .16s ease;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: 0 4px 12px rgba(18, 102, 226, .24);
}

.btn-primary:hover {
  background: var(--color-brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(18, 102, 226, .28);
}

.btn-outline {
  background: #fff;
  color: var(--color-ink);
  border-color: var(--color-line);
}

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

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

.btn-light:hover {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
}

main.outlet {
  min-height: 60vh;
}

.article-breadcrumb {
  padding: 26px 0 6px;
  font-size: 14px;
  color: #8296ad;
}

.article-breadcrumb .sep {
  margin: 0 10px;
  color: #b7c8d9;
}

.article-breadcrumb a {
  color: #5b718c;
}

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

.article-breadcrumb .current {
  color: var(--color-ink);
  font-weight: 500;
}

.article-page-head {
  padding: 26px 0 34px;
}

.article-page-head .head-sub-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-brand);
  background: var(--color-brand-light);
  border-radius: 999px;
  padding: 7px 14px;
  letter-spacing: .04em;
  margin-bottom: 18px;
}

.article-page-head .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green);
  box-shadow: 0 0 0 4px rgba(0, 168, 112, .14);
}

.article-page-head h1 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.28;
  color: var(--color-ink);
  font-weight: 800;
  letter-spacing: -.01em;
  max-width: 900px;
  margin-bottom: 18px;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  color: #71859b;
  font-size: 14px;
}

.article-meta-row .cat-name {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background: var(--color-page);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-brand-dark);
  font-weight: 600;
}

.article-meta-row .time-icon {
  margin-right: 5px;
  opacity: .7;
}

.article-main-layout {
  padding-bottom: 60px;
}

.article-col-main {
  min-width: 0;
}

.article-document {
  background: #fff;
  border: 1px solid rgba(220, 232, 245, .6);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-card);
  padding: clamp(28px, 5vw, 54px);
  transition: box-shadow .2s ease;
}

.article-document:hover {
  box-shadow: var(--shadow-hover);
}

.article-entry {
  font-size: 16.5px;
  line-height: 1.85;
  color: #233046;
  overflow-wrap: break-word;
}

.article-entry > * + * {
  margin-top: 1.2em;
}

.article-entry p {
  margin-bottom: 1.2em;
}

.article-entry h2,
.article-entry h3,
.article-entry h4 {
  color: var(--color-ink);
  font-weight: 700;
  margin-top: 1.8em;
}

.article-entry h2 {
  font-size: 26px;
  line-height: 1.4;
  margin-bottom: .6em;
  padding-left: 14px;
  border-left: 4px solid var(--color-brand);
}

.article-entry h3 {
  font-size: 21px;
  margin-bottom: .55em;
}

.article-entry h4 {
  font-size: 18px;
  margin-bottom: .5em;
}

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

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

.article-entry ul,
.article-entry ol {
  padding-left: 24px;
  margin-bottom: 1.3em;
}

.article-entry ul {
  list-style: disc;
}

.article-entry ol {
  list-style: decimal;
}

.article-entry li {
  margin-bottom: .4em;
}

.article-entry blockquote {
  margin: 1.5em 0;
  padding: 18px 22px;
  background: var(--color-page);
  border-radius: 10px;
  border-left: 4px solid var(--color-brand);
  color: #44546b;
}

.article-entry figure {
  margin: 2em 0;
}

.article-entry figcaption {
  font-size: 13px;
  color: #8ca0b5;
  text-align: center;
  padding-top: 10px;
}

.article-entry img {
  border-radius: 12px;
  box-shadow: var(--shadow-card);
}

.article-entry table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  background: #fff;
}

.article-entry th,
.article-entry td {
  border: 1px solid #e3edf8;
  padding: 10px 14px;
  text-align: left;
  font-size: 15px;
}

.article-entry th {
  background: var(--color-brand-light);
  color: var(--color-ink);
  font-weight: 700;
}

.article-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 22px 0 4px;
  margin-top: 38px;
  border-top: 1px solid var(--color-line);
}

.article-toolbar .toolbar-title {
  font-weight: 700;
  color: var(--color-ink);
  margin-right: 6px;
  font-size: 15px;
}

.tag-badge {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 7px;
  background: var(--color-page);
  border: 1px solid var(--color-line);
  color: #526479;
  font-size: 13px;
  font-weight: 500;
  transition: all .16s ease;
}

.tag-badge:hover {
  color: var(--color-brand);
  border-color: var(--color-brand);
  background: var(--color-brand-light);
}

.share-mini-btn {
  height: 38px;
  padding: 0 14px;
  font-size: 14px;
  background: #fff;
}

.share-mini-btn:hover {
  border-color: var(--color-brand);
}

.article-prevnext {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.article-prevnext .prevnext-card {
  flex: 1 1 190px;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-page);
  border: 1px solid var(--color-line);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 500;
  min-height: 70px;
  transition: all .16s ease;
}

.article-prevnext .prevnext-card:hover {
  border-color: var(--color-brand);
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
}

.article-prevnext .pn-arrow {
  color: #9fb0c3;
  font-size: 18px;
}

.article-sidebar {
  min-width: 0;
}

.side-sticky {
  position: sticky;
  top: 96px;
}

.side-card {
  background: #fff;
  border: 1px solid rgba(220, 232, 245, .6);
  border-radius: var(--radius-large);
  padding: 26px;
  box-shadow: var(--shadow-card);
  margin-bottom: 26px;
}

.side-card-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--color-ink);
}

.side-card-title::before {
  content: "";
  width: 4px;
  height: 18px;
  background: var(--color-brand);
  border-radius: 2px;
  margin-right: 10px;
}

.side-card-title span {
  flex: 1;
}

.side-more-link {
  font-size: 13px;
  font-weight: 400;
  color: #8ca0b5;
}

.side-more-link:hover {
  color: var(--color-brand);
}

.side-cat-list li {
  border-bottom: 1px solid #eef4fb;
}

.side-cat-list li:last-child {
  border-bottom: 0;
}

.side-cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 2px;
  color: var(--color-body);
  font-weight: 500;
  font-size: 15px;
}

.side-cat-list a i {
  color: #b7c8d9;
  font-style: normal;
  transition: transform .16s ease;
}

.side-cat-list a:hover {
  color: var(--color-brand);
}

.side-cat-list a:hover i {
  transform: translateX(3px);
  color: var(--color-brand);
}

.side-note-cover {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  margin-bottom: 18px;
}

.side-note-cover img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  transition: transform .3s ease;
}

.side-note-cover:hover img {
  transform: scale(1.03);
}

.side-note-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: 18px;
}

.side-note-btn {
  width: 100%;
}

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

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
}

.eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--color-brand);
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-ink);
}

.section-more {
  font-size: 14px;
  color: #8598ae;
  white-space: nowrap;
}

.section-more:hover {
  color: var(--color-brand);
}

.topic-mini-card {
  display: block;
  background: #fff;
  border: 1px solid rgba(220, 232, 245, .5);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .18s ease, box-shadow .18s ease;
  margin-bottom: 10px;
}

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

.topic-mini-card .topic-img {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}

.topic-mini-card .topic-img img {
  width: 100%;
  height: 175px;
  object-fit: cover;
  transition: transform .3s ease;
}

.topic-mini-card:hover .topic-img img {
  transform: scale(1.03);
}

.topic-num {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(12, 26, 51, .74);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: .06em;
  backdrop-filter: blur(6px);
}

.topic-card-body {
  padding: 20px;
}

.topic-card-body .topic-cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-brand);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: block;
}

.topic-card-body h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 8px;
  line-height: 1.4;
}

.topic-card-body p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.topic-card-enter {
  display: flex;
  align-items: center;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
  gap: 6px;
}

.cta-section {
  padding: 0 0 80px;
}

.cta-panel {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: 24px;
  overflow: hidden;
  padding: clamp(32px, 5vw, 58px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-panel::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -140px;
  top: -160px;
  border-radius: 50%;
  border: 2px dashed rgba(18, 102, 226, .16);
  pointer-events: none;
}

.cta-panel h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.cta-panel p {
  color: var(--color-body);
  max-width: 620px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  position: relative;
  z-index: 2;
}

.site-footer {
  background: #fff;
  border-top: 1px solid var(--color-line);
  padding: 58px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 42px;
}

.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.footer-logo-square {
  display: inline-flex;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--color-brand-light);
  color: var(--color-brand);
  font-size: 20px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(18, 102, 226, .14);
}

.footer-desc {
  font-size: 15px;
  color: #678096;
  line-height: 1.8;
  max-width: 400px;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 18px;
}

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

.footer-nav-list a {
  color: #5c7085;
  font-size: 15px;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  border-top: 1px solid #eef3f9;
  padding: 20px 0 22px;
  font-size: 13px;
  color: #8ba0b4;
}

.footer-bottom a {
  color: #7e93a9;
}

.missing-section {
  padding: 80px 0 90px;
}

.missing-box {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: 22px;
  padding: 60px 30px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  box-shadow: var(--shadow-card);
}

.missing-icon {
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: var(--color-page);
  border: 1px solid var(--color-line);
  color: var(--color-orange);
  font-size: 34px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
}

.missing-box h1 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--color-ink);
}

.missing-box p {
  color: var(--color-body);
  margin-bottom: 28px;
}

.backtop {
  position: fixed;
  right: 24px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  background: #fff;
  color: var(--color-brand);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .2s ease;
  z-index: 60;
}

.backtop.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.backtop:hover {
  background: var(--color-brand-light);
  border-color: var(--color-brand);
}

@media (max-width: 1023.98px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 10px 0;
    gap: 8px 12px;
  }

  .header-nav-area {
    order: 3;
    width: 100%;
    justify-content: flex-start;
  }

  .nav-chips {
    margin-left: -24px;
    margin-right: -24px;
    padding: 0 24px;
  }

  .header-actions {
    margin-left: auto;
  }

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

@media (max-width: 767.98px) {
  .container {
    padding: 0 16px;
  }

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

  .brand-logo {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

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

  .chip-link {
    height: 38px;
    padding: 0 15px;
    font-size: 14px;
  }

  .header-cta-name {
    display: none;
  }

  .header-actions .btn {
    height: 38px;
    padding: 0 14px;
  }

  .article-page-head h1 {
    font-size: 27px;
  }

  .article-document {
    padding: 22px 18px;
  }

  .article-entry {
    font-size: 15.5px;
  }

  .article-toolbar {
    align-items: flex-start;
  }

  .side-card {
    padding: 18px;
  }

  .side-sticky {
    position: static;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .cta-panel {
    align-items: flex-start;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 30px;
  }

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

@media (max-width: 519.98px) {
  .brand-text {
    font-size: 17px;
  }

  .article-meta-row {
    gap: 8px 12px;
    font-size: 13px;
  }

  .topic-mini-card .topic-img img {
    height: 145px;
  }

  .article-prevnext {
    flex-direction: column;
  }

  .btn {
    width: auto;
  }

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

.btn.is-fav-active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: #fff;
  box-shadow: 0 6px 16px rgba(255, 122, 69, .22);
}

.copy-tip {
  display: inline-block;
  margin-left: 10px;
  font-size: 13px;
  color: var(--color-green);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.copy-tip.show {
  opacity: 1;
}

/* roulang page: category2 */
:root {
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans", sans-serif;
            --color-brand: #1266E2;
            --color-brand-dark: #0D4FAF;
            --color-brand-light: #EAF3FF;
            --color-brand-lighter: #F4F8FF;
            --color-ink: #0C1A33;
            --color-body: #46586F;
            --color-muted: #7D8FA5;
            --color-line: #DCE8F5;
            --color-bg: #F6F9FC;
            --color-card: #FFFFFF;
            --color-green: #00A870;
            --color-orange: #FF7A45;
            --color-yellow: #F5C451;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 2px rgba(12, 26, 51, .04), 0 6px 16px rgba(12, 26, 51, .06);
            --shadow-md: 0 12px 24px rgba(12, 26, 51, .08), 0 4px 10px rgba(18, 102, 226, .08);
            --shadow-lg: 0 18px 36px rgba(12, 26, 51, .10);
            --space-section: clamp(56px, 8vw, 94px);
            --transition: all .18s ease-out;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--color-bg);
            color: var(--color-body);
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--color-ink);
            line-height: 1.25;
            font-weight: 700;
            margin: 0 0 14px;
        }

        p {
            margin: 0 0 1rem;
        }

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

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

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

        button,
        input,
        textarea {
            font-family: var(--font-main);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(18, 102, 226, .3);
            outline-offset: 3px;
        }

        .container {
            max-width: 1220px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        .section-head {
            margin-bottom: 38px;
        }

        .section-head .eyebrow {
            margin-bottom: 14px;
        }

        .section-head h2,
        .cta-panel h2 {
            font-size: clamp(27px, 4vw, 38px);
            letter-spacing: -.01em;
        }

        .section-head p {
            max-width: 760px;
            margin-top: 8px;
            margin-bottom: 0;
            font-size: 16px;
            color: var(--color-body);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
            border-radius: var(--radius-pill);
            padding: 5px 13px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .04em;
            line-height: 1.5;
        }

        .eyebrow i {
            font-size: 13px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 44px;
            padding: 0 20px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            cursor: pointer;
            border: 1px solid transparent;
            background: transparent;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-brand);
            color: #FFFFFF;
            box-shadow: 0 6px 14px rgba(18, 102, 226, .18);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--color-brand-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(18, 102, 226, .24);
        }

        .btn-outline {
            background: #FFFFFF;
            border-color: var(--color-line);
            color: var(--color-ink);
        }

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

        .btn-cta {
            min-height: 50px;
            padding-left: 24px;
            padding-right: 24px;
            border-radius: 10px;
            font-size: 16px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-line);
            box-shadow: 0 1px 0 rgba(255, 255, 255, .6);
        }

        .site-header.is-scrolled {
            box-shadow: 0 8px 24px rgba(12, 26, 51, .06);
        }

        .header-inner {
            display: flex;
            min-height: 72px;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            color: var(--color-ink);
            flex-shrink: 0;
        }

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

        .brand-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--color-brand);
            color: #FFFFFF;
            font-size: 21px;
            font-weight: 800;
            box-shadow: 0 6px 14px rgba(18, 102, 226, .22);
            font-family: var(--font-main);
        }

        .brand-text {
            font-size: 19px;
            font-weight: 800;
            letter-spacing: .01em;
            line-height: 1.2;
            white-space: nowrap;
        }

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

        .header-nav-area {
            margin: 0 8px;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 5px;
            background: var(--color-bg);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-pill);
            padding: 4px;
            scrollbar-width: none;
        }

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

        .chip-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 38px;
            padding: 0 16px;
            border-radius: var(--radius-pill);
            color: var(--color-ink);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .chip-link:hover,
        .chip-link:focus {
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
        }

        .chip-link.active {
            background: var(--color-brand-light);
            border-color: rgba(18, 102, 226, .18);
            color: var(--color-brand-dark);
            font-weight: 700;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7);
        }

        .header-actions .btn {
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
            border: 1px solid rgba(18, 102, 226, .12);
        }

        .header-actions .btn:hover,
        .header-actions .btn:focus {
            background: var(--color-brand);
            color: #FFFFFF;
        }

        .header-actions .btn.saved {
            background: var(--color-orange);
            border-color: var(--color-orange);
            color: #FFFFFF;
        }

        .page-hero {
            position: relative;
            background-color: var(--color-brand-lighter);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--color-line);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, .78);
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
            padding-top: clamp(38px, 6vw, 72px);
            padding-bottom: clamp(38px, 6vw, 72px);
        }

        .hero-frame {
            background: rgba(255, 255, 255, .92);
            border: 1px solid rgba(255, 255, 255, .8);
            border-radius: 24px;
            box-shadow: var(--shadow-md);
            padding: clamp(26px, 4.5vw, 52px);
        }

        .crumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 20px;
            font-size: 13px;
            color: var(--color-muted);
        }

        .crumb-nav a {
            color: var(--color-body);
            font-weight: 500;
        }

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

        .crumb-sep {
            color: var(--color-line);
            font-weight: 700;
        }

        .page-hero h1 {
            font-size: clamp(36px, 5vw, 58px);
            font-weight: 800;
            letter-spacing: -.03em;
            margin: 0 0 16px;
        }

        .hero-lead {
            font-size: 18px;
            color: var(--color-ink);
            line-height: 1.7;
            margin-bottom: 12px;
            max-width: 640px;
        }

        .hero-copy p.body-text {
            color: var(--color-body);
            margin: 0 0 22px;
            max-width: 640px;
        }

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

        .side-card {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: 20px;
            box-shadow: var(--shadow-sm);
            padding: 26px;
            position: relative;
            overflow: hidden;
        }

        .side-card::after {
            content: "";
            position: absolute;
            right: -52px;
            top: -52px;
            width: 120px;
            height: 120px;
            border: 20px solid var(--color-brand-light);
            border-radius: 50%;
            opacity: .5;
        }

        .side-card-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-ink);
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 22px;
        }

        .side-card-title i {
            color: var(--color-brand);
            width: 22px;
        }

        .side-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 18px;
        }

        .side-list-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }

        .side-list-item > i {
            color: var(--color-brand);
            font-size: 20px;
            margin-top: 3px;
            min-width: 24px;
            text-align: center;
        }

        .side-list-item b {
            display: block;
            color: var(--color-ink);
            font-size: 15px;
            line-height: 1.5;
            margin-bottom: 2px;
        }

        .side-list-item span {
            color: var(--color-muted);
            font-size: 13px;
            line-height: 1.5;
        }

        .metric-strip {
            background: var(--color-bg);
            padding-top: calc(var(--space-section) * .8);
            padding-bottom: calc(var(--space-section) * .8);
        }

        .metric-card {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 22px 18px;
            display: flex;
            align-items: center;
            gap: 14px;
            height: 100%;
            transition: var(--transition);
        }

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

        .metric-icon {
            width: 46px;
            height: 46px;
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            flex-shrink: 0;
        }

        .metric-info strong {
            display: block;
            font-size: 16px;
            color: var(--color-ink);
            line-height: 1.4;
        }

        .metric-info small {
            color: var(--color-muted);
            font-size: 13px;
            line-height: 1.5;
            display: block;
        }

        .topic-section {
            background: var(--color-bg);
        }

        .grid-margin-x > .cell {
            margin-bottom: 24px;
        }

        .topic-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .2s ease, box-shadow .18s ease;
        }

        .topic-card:hover,
        .topic-card:focus {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            color: var(--color-ink);
        }

        .topic-cover {
            position: relative;
            padding-top: 68%;
            overflow: hidden;
            background: var(--color-brand-lighter);
        }

        .topic-cover img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .2s ease;
        }

        .topic-card:hover .topic-cover img {
            transform: scale(1.03);
        }

        .topic-num {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .92);
            border: 1px solid rgba(255, 255, 255, .5);
            color: var(--color-brand-dark);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: .03em;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-sm);
        }

        .topic-copy {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .topic-tag {
            display: inline-flex;
            align-self: flex-start;
            color: var(--color-brand-dark);
            background: var(--color-brand-light);
            font-size: 13px;
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .topic-copy h3 {
            font-size: 19px;
            line-height: 1.4;
            margin: 0 0 10px;
        }

        .topic-copy p {
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }

        .topic-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-brand);
            font-size: 14px;
            font-weight: 700;
        }

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

        .guide-band {
            background: var(--color-card);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }

        .guide-media {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
            line-height: 0;
        }

        .guide-media img {
            width: 100%;
            max-height: 380px;
            object-fit: cover;
        }

        .step-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 20px;
        }

        .step-item {
            display: flex;
            gap: 16px;
            position: relative;
        }

        .step-mark {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }

        .step-copy strong {
            color: var(--color-ink);
            display: block;
            font-size: 17px;
            margin: 2px 0 4px;
        }

        .step-copy span {
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.7;
            display: block;
        }

        .feature-section {
            background: var(--color-bg);
        }

        .feature-row {
            margin-bottom: 28px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-media {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            line-height: 0;
        }

        .feature-media img {
            width: 100%;
            max-height: 360px;
            object-fit: cover;
        }

        .feature-media .feature-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .94);
            border: 1px solid rgba(255, 255, 255, .5);
            color: var(--color-ink);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 12px;
            box-shadow: var(--shadow-sm);
        }

        .feature-content {
            padding: 10px 0;
        }

        .feature-index {
            color: var(--color-brand);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: .06em;
        }

        .feature-content h3 {
            font-size: 24px;
            margin: 8px 0 12px;
        }

        .feature-content p {
            color: var(--color-body);
            font-size: 15px;
            max-width: 600px;
            margin: 0 0 14px;
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .mini-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 10px;
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
        }

        .faq-section {
            background: var(--color-card);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }

        .faq-wrap {
            max-width: 920px;
            margin: 0 auto;
        }

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

        .accordion-item {
            background: var(--color-card);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .accordion-item.is-active {
            border-color: rgba(18, 102, 226, .24);
            box-shadow: var(--shadow-sm);
        }

        .accordion-title {
            position: relative;
            display: block;
            background: #FFFFFF;
            color: var(--color-ink);
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            padding: 18px 56px 18px 24px;
            margin: 0;
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .accordion-title:hover,
        .accordion-item.is-active .accordion-title {
            background: var(--color-brand-lighter);
            color: var(--color-ink);
        }

        .accordion-title::before {
            content: "+";
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-brand-light);
            color: var(--color-brand-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
        }

        .accordion-item.is-active .accordion-title::before {
            content: "−";
            background: var(--color-brand);
            color: #FFFFFF;
        }

        .accordion-content {
            padding: 0 24px;
            background: var(--color-brand-lighter);
            border-top: 0 solid transparent;
        }

        .accordion-content-inner {
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.8;
            padding: 4px 0 22px;
        }

        .cta-section {
            background: var(--color-bg);
        }

        .cta-panel {
            background: var(--color-brand-light);
            border: 1px solid var(--color-line);
            border-radius: 26px;
            padding: clamp(34px, 6vw, 64px);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            right: -30px;
            bottom: -30px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            border: 30px solid rgba(255, 255, 255, .45);
        }

        .cta-panel h2 {
            margin-bottom: 12px;
        }

        .cta-panel p {
            color: var(--color-body);
            font-size: 16px;
            max-width: 620px;
            margin: 0 auto 26px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            position: relative;
            z-index: 1;
        }

        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--color-line);
            padding-top: 56px;
            padding-bottom: 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
            gap: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 21px;
            font-weight: 800;
            color: var(--color-ink);
            margin-bottom: 14px;
            font-style: normal;
            line-height: 1.4;
        }

        .footer-logo-square {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--color-brand);
            color: #FFFFFF;
            font-size: 21px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .footer-desc {
            color: var(--color-body);
            font-size: 15px;
            line-height: 1.8;
            max-width: 460px;
            margin-bottom: 0;
        }

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

        .footer-nav-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 8px;
        }

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

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

        .footer-bottom {
            margin-top: 46px;
            padding-top: 22px;
            border-top: 1px solid var(--color-line);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
            color: var(--color-muted);
            font-size: 13px;
        }

        .footer-bottom a {
            color: var(--color-muted);
        }

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

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

            .footer-grid > div:first-child {
                grid-column: 1 / -1;
            }

            .hero-copy {
                margin-bottom: 28px;
            }

            .guide-media {
                margin-bottom: 30px;
            }
        }

        @media (max-width: 767px) {
            .header-inner {
                display: grid;
                grid-template-columns: minmax(0, 1fr) auto;
                align-items: center;
                gap: 8px 12px;
                padding-top: 8px;
                padding-bottom: 8px;
                min-height: auto;
            }

            .header-nav-area {
                grid-column: 1 / -1;
                grid-row: 2;
                order: 3;
                width: 100%;
                margin: 0;
                overflow-x: auto;
            }

            .nav-chips {
                justify-content: flex-start;
                padding: 4px;
                border-radius: 14px;
                overflow-x: auto;
            }

            .chip-link {
                flex: 0 0 auto;
            }

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

            .header-actions .btn {
                min-height: 40px;
                padding: 0 12px;
            }

            .section {
                padding-top: 52px;
                padding-bottom: 52px;
            }

            .hero-actions .btn {
                width: calc(50% - 6px);
                justify-content: center;
            }

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

            .footer-grid > div:first-child {
                grid-column: auto;
            }

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

        @media (max-width: 560px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .header-actions .btn span.header-cta-text {
                display: none;
            }

            .header-actions .btn {
                width: 40px;
                height: 40px;
                padding: 0;
            }

            .page-hero h1 {
                font-size: 34px;
            }

            .hero-actions {
                display: grid;
                grid-template-columns: 1fr;
            }

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

            .metric-icon {
                width: 40px;
                height: 40px;
            }

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

/* roulang page: category3 */
:root {
  --color-brand: #1266E2;
  --color-brand-dark: #0D4FAF;
  --color-brand-light: #EAF3FF;
  --color-ink: #0C1A33;
  --color-body: #46586F;
  --color-line: #DCE8F5;
  --color-bg: #F6F9FC;
  --color-white: #FFFFFF;
  --color-green: #00A870;
  --color-orange: #FF7A45;
  --color-yellow: #F5C451;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(12,26,51,.04), 0 6px 16px rgba(12,26,51,.06);
  --shadow-hover: 0 18px 36px rgba(12,26,51,.10);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans", system-ui, sans-serif;
  --gap-section: clamp(56px, 8vw, 112px);
  --gap-card: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .18s ease;
}

button {
  font-family: var(--font-family);
  border: none;
  cursor: pointer;
}

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

p,
h1,
h2,
h3,
h4 {
  margin: 0;
}

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

input,
textarea {
  font-family: var(--font-family);
}

:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 3px;
}

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

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

.section-head {
  margin-bottom: 44px;
}

.section-head .eyebrow,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-brand);
  margin-bottom: 12px;
}

.eyebrow:before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--color-brand);
  border-radius: 2px;
  display: inline-block;
}

.section-head h2 {
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section-sub {
  font-size: 16px;
  line-height: 1.8;
  margin-top: 12px;
  color: var(--color-body);
  max-width: 680px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: background .18s ease, box-shadow .18s ease, transform .18s ease, color .18s ease;
  white-space: nowrap;
}

.btn i {
  font-size: 16px;
}

.btn-primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: 0 6px 16px rgba(18, 102, 226, .24);
}

.btn-primary:hover {
  background: var(--color-brand-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(18, 102, 226, .30);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-line);
  box-shadow: 0 1px 0 rgba(12, 26, 51, .02);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 72px;
}

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

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

.brand-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

.brand-text .dot {
  display: inline;
  color: var(--color-brand);
}

.header-nav-area {
  flex: 1;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chip-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-body);
  background: transparent;
  transition: background .18s ease, color .18s ease;
}

.chip-link:hover {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
}

.chip-link.active {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  font-weight: 700;
}

.header-actions {
  flex-shrink: 0;
}

.header-actions .btn {
  min-height: 40px;
  padding: 0 16px;
}

/* Category Hero */
.category-hero {
  position: relative;
  padding: clamp(56px, 8vw, 100px) 0 70px;
  background: var(--color-white);
  overflow: hidden;
}

.category-hero .cover-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 35%;
  opacity: .18;
}

.category-hero .cover-bg:before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.72) 58%, rgba(234,243,255,.54) 100%);
}

.category-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-body);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--color-brand);
  font-weight: 500;
}

.breadcrumb span {
  color: var(--color-line);
}

.breadcrumb .sep:after {
  content: "/";
}

.category-hero h1 {
  font-size: clamp(40px, 6vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 8px;
  margin-bottom: 18px;
}

.category-hero .hero-lead {
  font-size: 17px;
  line-height: 1.9;
  color: var(--color-body);
  max-width: 620px;
  margin-bottom: 32px;
}

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

.hero-aside-card {
  margin-left: auto;
  width: 100%;
  max-width: 440px;
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(220,232,245,.9);
  border-radius: 16px;
  padding: 28px 30px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px);
}

.hero-aside-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--color-brand);
  margin-bottom: 18px;
}

.hero-aside-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 15px;
  color: var(--color-body);
}

.hero-aside-list li:last-child {
  border-bottom: none;
}

.hero-aside-list li strong {
  color: var(--color-ink);
  font-size: 20px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

/* Quick indices */
.quick-metrics {
  background: var(--color-ink);
  color: #fff;
  padding: 28px 0;
  position: relative;
}

.quick-metrics .grid-x {
  row-gap: 18px;
}

.metric-item {
  text-align: center;
  padding: 4px 10px;
}

.metric-item strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.metric-item strong em {
  font-style: normal;
  color: #8FCAFF;
}

.metric-item span {
  display: block;
  font-size: 13px;
  color: #AFC2DC;
  margin-top: 6px;
}

/* Content intro */
.intro-block {
  background: var(--color-bg);
}

.intro-card {
  background: var(--color-white);
  border-radius: 16px;
  padding: 34px;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
  height: 100%;
  position: relative;
}

.intro-card .intro-number {
  font-size: 14px;
  font-weight: 800;
  color: var(--color-brand);
  letter-spacing: .06em;
  display: block;
  margin-bottom: 14px;
}

.intro-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
}

.intro-card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-body);
}

.intro-card .intro-line {
  position: absolute;
  left: 0;
  top: 26px;
  bottom: 26px;
  width: 3px;
  background: var(--color-brand-light);
  border-radius: 3px;
}

/* Feature topics */
.featured-section {
  background: var(--color-white);
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-line);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}

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

.feature-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-brand-light);
}

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

.feature-card:hover .feature-thumb img {
  transform: scale(1.03);
}

.feature-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--color-brand);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  letter-spacing: .02em;
  box-shadow: 0 4px 12px rgba(12, 26, 51, .18);
}

.feature-index {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  color: var(--color-brand);
  letter-spacing: .08em;
  margin-bottom: 12px;
}

.feature-body {
  padding: 24px 24px 26px;
}

.feature-body h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.feature-body p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-body);
  margin-bottom: 22px;
}

.feature-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-line);
  font-size: 12px;
  color: #7B8BA5;
}

.feature-meta .meta-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-green);
  font-weight: 600;
}

.feature-meta .meta-status i {
  font-size: 10px;
}

/* Workflow */
.workflow-block {
  background: var(--color-bg);
  position: relative;
}

.workflow-steps .cell {
  height: 100%;
}

.workflow-step {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  position: relative;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}

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

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 18px;
}

.workflow-step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.workflow-step p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-body);
}

/* Term chips */
.term-section {
  background: var(--color-white);
}

.term-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.term-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  color: var(--color-body);
  font-size: 14px;
  font-weight: 500;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.term-chip:hover {
  background: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand-dark);
}

.term-chip .dot-term {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-brand);
}

/* Related categories */
.related-section {
  background: var(--color-bg);
}

.related-item {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  height: 100%;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}

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

.related-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
  font-size: 20px;
  margin-bottom: 18px;
}

.related-item h3 {
  font-size: 18px;
  color: var(--color-ink);
  margin-bottom: 8px;
  font-weight: 700;
}

.related-item p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.8;
  margin-bottom: 16px;
}

.related-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* FAQ */
.faq-simple {
  background: var(--color-white);
}

.accordion {
  margin-top: 0;
  list-style: none;
}

.accordion-item {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 12px;
  margin-bottom: 14px !important;
  overflow: hidden;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.accordion-item.is-active {
  border-color: rgba(18, 102, 226, .5);
  box-shadow: var(--shadow-sm);
}

.accordion-title {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.6;
  padding: 20px 52px 20px 22px;
  position: relative;
  border-bottom: 1px solid transparent;
  transition: background .18s ease, color .18s ease;
}

.accordion-title:hover {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
}

.accordion-title:before,
.accordion-title:after {
  content: none !important;
}

.accordion-title:after {
  content: "+" !important;
  position: absolute;
  right: 18px;
  top: 50%;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 500;
  color: var(--color-brand);
  border-radius: 50%;
  transform: translateY(-50%);
  transition: transform .16s ease;
}

.accordion-item.is-active .accordion-title {
  background: var(--color-brand-light);
  color: var(--color-brand-dark);
}

.accordion-item.is-active .accordion-title:after {
  content: "−" !important;
}

.accordion-content {
  padding: 0 22px !important;
  font-size: 15px;
  color: var(--color-body);
  line-height: 1.85;
  border-bottom: 1px solid var(--color-line);
}

.accordion-content .content-inner {
  padding: 6px 0 22px;
}

.accordion-content .is-active {
  padding: 6px 0 22px;
}

.accordion-content p + p {
  margin-top: 12px;
}

/* CTA */
.cta-panel {
  background: var(--color-bg);
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  padding: clamp(30px, 5vw, 58px);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.cta-box:before {
  content: "";
  position: absolute;
  right: -50px;
  top: -50px;
  width: 240px;
  height: 240px;
  background-image: linear-gradient(to bottom right, transparent 25%, var(--color-brand-light) 25%, var(--color-brand-light) 50%, transparent 50%);
  background-size: 24px 24px;
  opacity: .6;
}

.cta-copy {
  position: relative;
  z-index: 1;
}

.cta-copy h2 {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.cta-copy p {
  color: var(--color-body);
  font-size: 16px;
  line-height: 1.8;
  margin-top: 6px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.btn-light {
  background: var(--color-bg);
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

.btn-light:hover {
  background: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand-dark);
}

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: #AFC2DC;
  padding: 60px 0 0;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(175,194,220,.16);
}

.site-footer a {
  color: #AFC2DC;
  transition: color .16s ease;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
}

.footer-logo-square {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--color-brand);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
}

.footer-brand em {
  font-style: normal;
  color: #8FCAFF;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.85;
  color: #8AA1BE;
  max-width: 440px;
}

.footer-title {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: .02em;
}

.footer-nav-list li {
  margin-bottom: 11px;
}

.footer-nav-list li a {
  font-size: 14px;
  display: inline-block;
  padding: 3px 0;
}

.footer-nav-list li a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0 28px;
  color: #7C91AA;
  font-size: 13px;
}

.footer-bottom a {
  color: #8FCAFF;
}

/* Responsive */
@media screen and (max-width: 980px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 10px 0;
    gap: 8px;
  }
  .brand {
    flex: 1;
  }
  .header-nav-area {
    order: 3;
    flex: 0 0 100%;
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 4px;
    margin: 0 -2px;
  }
  .nav-chips {
    display: inline-flex;
    flex-wrap: nowrap;
    white-space: nowrap;
    padding: 0 2px;
  }
  .chip-link {
    padding: 0 16px;
    min-height: 40px;
  }
  .header-actions {
    order: 2;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .cta-box {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media screen and (max-width: 768px) {
  .category-hero h1 {
    font-size: 36px;
  }
  .hero-aside-card {
    margin-left: 0;
    max-width: 100%;
    margin-top: 28px;
  }
  .feature-body {
    padding: 20px;
  }
  .btns-header .header-cta-text {
    display: inline-block;
  }
  .quick-metrics {
    padding: 20px 0;
  }
  .metric-item strong {
    font-size: 22px;
  }
  .metric-item span {
    font-size: 12px;
  }
  .cta-box {
    padding: 28px 22px;
  }
}

@media screen and (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 17px;
  }
  .brand-logo {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
  .header-actions .btn {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }
  .category-hero h1 {
    font-size: 32px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .accordion-title {
    font-size: 15px;
    padding: 18px 44px 18px 18px;
  }
  .accordion-content {
    padding: 0 18px !important;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category4 */
:root {
  --color-brand: #1266E2;
  --color-brand-dark: #0D4FAF;
  --color-brand-light: #EAF3FF;
  --color-ink: #0C1A33;
  --color-body: #46586F;
  --color-line: #DCE8F5;
  --color-green: #00A870;
  --color-orange: #FF7A45;
  --color-yellow: #F5C451;
  --color-bg: #F6F9FC;
  --color-card: #FFFFFF;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(12,26,51,.04), 0 6px 16px rgba(12,26,51,.06);
  --shadow-card-hover: 0 18px 36px rgba(12,26,51,.10);
  --gap-section: clamp(56px, 8vw, 100px);
  --gap-card: 24px;
  --font-base: 16px;
  --font-body: "PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding:0;font-family:var(--font-body);font-size:var(--font-base);line-height:1.75;color:var(--color-ink);background:var(--color-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .18s ease}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.skip-link{position:absolute;left:-999px;top:0;z-index:9999;background:var(--color-brand);color:#fff;padding:8px 20px;border-radius:6px}
.skip-link:focus{left:16px;top:8px}
.button,.btn{font-family:var(--font-body)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-line);transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 6px 20px rgba(12,26,51,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-logo{width:38px;height:38px;background:var(--color-brand);color:#fff;font-weight:800;font-size:23px;line-height:36px;text-align:center;border-radius:12px;font-style:italic;letter-spacing:-1px;box-shadow:0 3px 10px rgba(18,102,226,.25);transition:transform .2s ease}
.brand:hover .brand-logo{transform:rotate(-8deg) scale(1.02)}
.brand-text{font-size:19px;font-weight:800;color:var(--color-ink);letter-spacing:-.2px;white-space:nowrap}
.brand-text .dot{color:var(--color-brand);font-weight:500}
.nav-chips{display:flex;align-items:center;gap:6px}
.chip-link{display:inline-flex;align-items:center;justify-content:center;padding:8px 18px;border-radius:var(--radius-pill);font-size:14px;font-weight:500;color:var(--color-body);border:1px solid transparent;transition:all .16s ease;cursor:pointer;min-height:38px;white-space:nowrap}
.chip-link:hover{color:var(--color-brand);background:rgba(18,102,226,.04);border-color:rgba(18,102,226,.16)}
.chip-link.active{background:var(--color-brand-light);color:var(--color-brand-dark);font-weight:600;box-shadow:inset 0 0 0 1px rgba(18,102,226,.14);border-color:rgba(18,102,226,.18)}
.chip-link:focus-visible{outline:2px solid var(--color-brand);outline-offset:2px;border-radius:var(--radius-pill)}
.header-actions{flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-btn);font-size:14px;font-weight:600;border:none;cursor:pointer;padding:10px 20px;transition:all .18s ease;min-height:42px;gap:8px;line-height:1}
.btn-primary{background:var(--color-brand);color:#fff}
.btn-primary:hover{background:var(--color-brand-dark);box-shadow:0 8px 18px rgba(18,102,226,.26);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-primary.faved{background:var(--color-orange);box-shadow:0 8px 18px rgba(255,122,69,.25)}
.btn-outline{border:1px solid #BBD3F0;background:rgba(255,255,255,.9);color:var(--color-brand-dark)}
.btn-outline:hover{background:var(--color-brand-light);border-color:var(--color-brand);box-shadow:0 6px 16px rgba(18,102,226,.13)}
.btn-outline:active{background:var(--color-brand-light)}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:10px;min-height:50px}
.btn:focus-visible{outline:2px solid var(--color-brand);outline-offset:2px}
.mobile-header-nav{display:none}
.navigation-mobile{display:none}

.hero-band{background:linear-gradient(120deg, #F6F9FC 0%, #EDF4FB 55%, #E3EEFA 100%);border-bottom:1px solid var(--color-line);padding-top:20px;position:relative;overflow:hidden}


.page-breadcrumb{font-size:13px;color:var(--color-body);padding:24px 0 0}
.page-breadcrumb a{color:var(--color-body);transition:color .16s}
.page-breadcrumb a:hover{color:var(--color-brand)}
.page-breadcrumb em{font-style:normal;margin:0 8px;color:#9EB2CD}
.page-breadcrumb .active{color:var(--color-brand-dark);font-weight:600}

.category-lead{border-radius:var(--radius-card);padding:40px 0 20px}
.lead-title-wrap{max-width:900px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--color-brand);display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;background:var(--color-brand-light);border-radius:var(--radius-pill);padding:6px 14px;border:1px solid rgba(18,102,226,.12)}
.hero-title{font-size:clamp(32px,5vw,46px);line-height:1.18;color:var(--color-ink);font-weight:800;margin-top:22px;margin-bottom:0;letter-spacing:-.5px}
.hero-sub{margin-top:18px;color:var(--color-body);font-size:17px;max-width:760px;line-height:1.8;margin-bottom:28px}
.mini-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:8px}
.mini-stats .stat{display:flex;align-items:baseline;gap:8px}
.mini-stats .num{font-size:30px;font-weight:800;color:var(--color-brand);letter-spacing:-1px;line-height:1}
.mini-stats .desc{font-size:13px;color:var(--color-body)}

.section-divider{border:0;border-top:1px solid var(--color-line);margin:0}

.mobile-more-chips{display:none}

.detail-offset-band{margin-top:-24px;position:relative;z-index:2}
.detail-card-white{background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:var(--gap-card);border:1px solid rgba(220,232,245,.6)}

.collection-intro-sm{font-size:14px;color:var(--color-body);line-height:1.85;margin-bottom:20px}

.chip-legend{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip-tag{display:inline-flex;align-items:center;gap:6px;background:#F6F9FC;border:1px solid var(--color-line);border-radius:var(--radius-pill);padding:6px 14px;font-size:13px;color:var(--color-body);transition:border-color .16s}
.chip-tag:hover{border-color:var(--color-brand)}
.chip-tag i{font-size:12px;color:var(--color-brand)}
.chip-tag .st-dot{width:6px;height:6px;border-radius:50%;background:var(--color-green);display:inline-block}

.grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap-card)}
.grid-2x1{display:grid;grid-template-columns:1fr 1fr;gap: var(--gap-card)}
.grid-3items{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap-card)}

.section-gap{padding-top:var(--gap-section);padding-bottom:var(--gap-section)}
.section-gap-sm{padding-top:clamp(36px,5vw,56px);padding-bottom:clamp(36px,5vw,56px)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px;gap:20px}
.section-head-wrap{display:flex;align-items:center;gap:16px;margin-bottom:24px}

.card-main{position:relative;border-radius:var(--radius-card);overflow:hidden;background:var(--color-card);border:1px solid rgba(220,232,245,.7);box-shadow:var(--shadow-card);transition:box-shadow .2s ease,transform .2s ease;display:flex;flex-direction:column}
.card-main:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:#E8EFFF}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.card-main:hover .card-media img{transform:scale(1.04)}
.card-media .badge{position:absolute;top:14px;left:14px;z-index:3}
.badge{display:inline-flex;align-items:center;background:rgba(255,255,255,.94);border-radius:var(--radius-pill);padding:5px 13px;font-size:12px;font-weight:600;color:var(--color-brand-dark);box-shadow:0 2px 8px rgba(12,26,51,.10);gap:6px}
.badge-hot{background:red;color:#fff}
.badge-new{background:var(--color-green);color:#fff}
.badge-orange{background:var(--color-orange);color:#fff}
.badge i{margin-right:3px}
.card-body{padding:20px 22px 18px;flex:1;display:flex;flex-direction:column}
.card-title{font-size:18px;line-height:1.5;font-weight:700;color:var(--color-ink);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-main:hover .card-title{color:var(--color-brand-dark)}
.card-desc{font-size:14px;color:var(--color-body);line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:12px;color:#8DA2BF}
.card-meta span{display:inline-flex;align-items:center;gap:5px}
.arrow-link{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;color:var(--color-brand)}
.arrow-link i{transition:transform .2s ease}
.card-main:hover .arrow-link i{transform:translateX(4px)}
.card-main:hover .card-body .arrow-link{color:var(--color-brand-dark)}

.dark-block{background:#0E1D34;color:#D9E5F5;border-radius:20px;padding:clamp(36px,5vw,56px) clamp(24px,4vw,64px)}
.light-band{background:#EAF3FF;border-radius:0;padding:44px 24px}
.list-card{background:#fff;border-radius:14px;border:1px solid #E3EDF8;box-shadow:var(--shadow-card);padding:22px 24px;margin-bottom:16px;display:flex;gap:18px;transition:border-color .2s,box-shadow .2s}
.list-card:hover{border-color:#A4C7F0;box-shadow:0 12px 28px rgba(18,102,226,.08)}
.list-order{flex-shrink:0;font-size:22px;font-weight:800;color:var(--color-brand);background:var(--color-brand-light);width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-family:Georgia,serif}
.list-body{flex:1}
.list-body .list-title{font-size:16px;font-weight:700;margin-bottom:4px}
.list-body .list-title a{color:var(--color-ink)}
.list-body .list-title a:hover{color:var(--color-brand)}
.list-body p{font-size:14px;color:var(--color-body);margin-bottom:6px;line-height:1.6}
.list-tag{display:inline-flex;align-items:center;padding:2px 8px;background:#F2F6FF;border-radius:5px;font-size:12px;color:#467ECF;border:1px solid #D2E3FA}

.time-line{list-style:none;max-width:760px}
.timeline-item{position:relative;padding-left:26px;margin-bottom:18px;border-left:2px solid rgba(18,102,226,.18)}
.timeline-item:before{content:'';position:absolute;left:-6px;top:8px;width:10px;height:10px;background:#1266E2;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 2px rgba(18,102,226,.3)}
.timeline-item p{margin:2px 0 0;color:var(--color-body);font-size:14px}

.faq-item{background:#fff;border-radius:14px;border:1px solid rgba(220,232,245,.8);box-shadow:0 2px 4px rgba(0,0,0,.02);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease}
.faq-item:hover{border-color:rgba(18,102,226,.2)}
.faq-q{width:100%;display:flex;align-items:flex-start;gap:14px;text-align:left;background:transparent;border:none;padding:18px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--color-ink);font-family:var(--font-body);min-height:56px;transition:background .15s ease}
.faq-q:hover{background:#FAFCFF}
.faq-q.active{background:#F7FBFF;color:var(--color-brand-dark)}
.faq-icon{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--color-brand-light);display:inline-flex;align-items:center;justify-content:center;font-size:15px;color:var(--color-brand);font-weight:700;transition:transform .2s ease}
.faq-q.active .faq-icon{transform:rotate(45deg);background:var(--color-brand);color:#fff}

.cta-box{background:linear-gradient(135deg,#F0F7FF 0%,#E5F0FD 100%);border:1px solid #C8E0FA}
.cta-box .btn{margin-top:20px}

.footer-cta{background:#0C1A33;color:#C2D1E8;padding:80px 0 0}
.footer-cta .inner{display:flex;align-items:flex-start;justify-content:space-between;gap:40px;padding-bottom:60px}
.footer-cta h2{color:#fff;font-size:clamp(20px,3vw,28px);margin-bottom:8px;font-weight:700}
.footer-cta p{font-size:15px;color:#94A9C8;line-height:1.7}

.site-footer{background:#0C1A33;color:#C2D1E8;padding-top:10px}
.site-footer .container{padding-bottom:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding:44px 0 24px}
.footer-brand{font-size:20px;color:#fff;font-weight:800;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo-square{background:var(--color-brand);border-radius:10px;color:#fff;width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:20px}
.footer-desc{font-size:14px;line-height:1.8;color:#94A9C8;max-width:360px;margin:0}
.footer-title{margin-bottom:18px;font-weight:600;color:#F0F5FD;font-size:15px}
.footer-nav-list li{margin-bottom:10px;font-size:14px}
.footer-nav-list li a{color:#A4B9D8}
.footer-nav-list li a:hover{color:#fff;padding-left:5px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.12);padding:18px 0 2px;font-size:12px;color:#768CA8}
.footer-bottom a{color:#A4B9D8}
.footer-bottom a:hover{color:#fff}

.pill-link{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid #C8DCED;border-radius:var(--radius-pill);background:#fff;padding:7px 18px;font-size:14px;font-weight:500}
.pill-link:hover{border-color:var(--color-brand);color:var(--color-brand)}

.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery-line{height:4px;border-radius:10px;background:#D9E5F5}

#backTop{position:fixed;right:26px;bottom:28px;z-index:99;width:48px;height:48px;border-radius:50%;background:#fff;border:none;border: 1px solid #E4ECF6;box-shadow:0 12px 28px rgba(12,26,51,.16);display:flex;align-items:center;justify-content:center;color:var(--color-brand);transition:all .2s ease;cursor:pointer;opacity:0;visibility:hidden}
#backTop.show{opacity:1;visibility:visible}
#backTop:hover{transform:translateY(-3px);background:var(--color-brand);color:#fff;border-color:var(--color-brand)}


.topic-feature-card{display:flex;gap:28px;align-items:center;background:#fff;border-radius:20px;border:1px solid #E5EDF8;box-shadow:var(--shadow-card);padding:24px}
.topic-feature-card.reverse{flex-direction:row-reverse}
.topic-visual{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--color-ink);margin-bottom:20px}
.topic-visual .cover-preview{width:100%;border-radius:10px;overflow:hidden}
.topic-media{flex:0 0 260px;aspect-ratio:16/10;border-radius:var(--radius-card);overflow:hidden;position:relative;background:#DAE6F7}
.topic-media img{width:100%;height:100%;object-fit:cover}

.special-sub-title{color:var(--color-brand-dark);font-weight:600}

.two-col-divider{display:grid;grid-template-columns:340px 1fr;gap:20px;overflow:hidden;border-radius:20px;background:var(--color-brand);color:#fff;position:relative}
.cta-visual{background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;min-height:260px}

.horizontal-scroll-wrap{overflow-x:auto;display:flex;gap:20px;padding-bottom:10px;scrollbar-width:thin}
.hscroll-card{min-width:320px;flex:0 0 320px;background:#fff;border-radius:14px;border:1px solid var(--color-line);overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column}
.hscroll-card .c-media{aspect-ratio:16/10;overflow:hidden;background:#EEF4FF}
.hscroll-card .c-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.hscroll-card:hover .c-media img{transform:scale(1.04)}
.hscroll-card .c-body{padding:22px 20px}
.topic-indicator{width:28px;height:4px;background:var(--color-brand);border-radius:2px;margin-top:16px}

.text-block-list{list-style:none}
.text-block-list li{background:#fff;border-radius:12px;border:1px solid #E6EDF8;padding:16px 18px;margin-bottom:10px;display:flex;gap:14px;align-items:flex-start;transition:all .18s ease}
.text-block-list li:hover{border-color:var(--color-brand);box-shadow:var(--shadow-card)}
.text-block-list .num-pill{flex-shrink:0;width:28px;height:28px;background:#F0F3FA;color:var(--color-brand);font-weight:800;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.text-block-list li p{font-size:14px;color:var(--color-body);margin:0}

.breadcrumb-pill{display:inline-flex;align-items:center;padding:8px 16px;background:var(--color-brand-light);color:var(--color-brand-dark);border-radius:var(--radius-pill);font-size:13px;font-weight:600;border:1px solid rgba(18,102,226,.14)}
.breadcrumb-pill i{margin-right:6px}

.dark-stat-list .block-item{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.dark-stat-list .block-item:last-child{border-bottom:none}
.dark-stat-list .block-num{color:var(--color-brand);font-size:34px;font-weight:800;min-width:70px}
.dark-stat-list .block-info h4{color:#fff;font-size:18px;margin-bottom:8px;font-weight:700}


@media screen and (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .nav-chips{gap:4px}
  .grid-3items{grid-template-columns:1fr 1fr}
  .topic-feature-card{flex-direction:column}
  .topic-feature-card.reverse{flex-direction:column}
  .horizontal-scroll-wrap .hscroll-card{min-width:300px}
  .hero-title{font-size:clamp(28px,4vw,40px)}
}

@media screen and (max-width:768px){
  .nav-chips{overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start;padding-bottom:2px;gap:4px;scrollbar-width:none}
  .nav-chips::-webkit-scrollbar{display:none}
  .chip-link{flex:0 0 auto;font-size:13px;padding:7px 14px}
  .nav-desktop .nav-chips{display:none}
  .mobile-header-nav{display:block}
  .site-header .header-actions{display:none}
  
  .heading-area{display:none}
  .container{padding-left:16px;padding-right:16px}
  .grid-2x2,.grid-2x1,.grid-3items{grid-template-columns:1fr}
  .grid-3items{grid-template-columns:1fr}
  .mini-stats{flex-direction:column;gap:16px}
  .brand-text{font-size:17px}
  .section-head{flex-direction:column;align-items:flex-start}
  .col-flex-right{width:100%}
  .card-main .card-title{font-size:16px}
  .list-card{flex-direction:column;gap:12px}
  .list-order{width:44px;height:44px;font-size:19px}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .mobile-more-chips{display:block;background:#fff;border-bottom:1px solid var(--color-line);padding:10px 0;overflow-x:auto}
  .mobile-more-chips .inner-wrap{display:flex;gap:8px;overflow-x:auto;padding:0 16px}
  .mobile-more-chips .inner-wrap a{white-space:nowrap;background:#F0F6FD;border-radius:20px;padding:6px 16px;font-size:14px;color:var(--color-ink)}
  .mobile-more-chips .inner-wrap a:hover{border-bottom-color:transparent}
  .mobile-more-chips .inner-wrap a.active{background:var(--color-brand-light);color:var(--color-brand-dark);font-weight:600}
  .horizontal-scroll-wrap .hscroll-card{min-width:260px;flex-basis:260px}
  section-topic {padding-top:0}
  .footer{text-align:left}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:28px 0 16px}
  .footer-desc{max-width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:13px;gap:6px}
  .hero-sub{font-size:16px}
  .detail-offset-band{margin-top:-10px}
}

@media screen and (max-width:520px){
  body{font-size:15px;line-height:1.7}
  .container{padding-left:14px;padding-right:14px}
  .header-inner{height:60px}
  .brand-logo{width:34px;height:34px;font-size:20px;line-height:34px}
  .brand-text{font-size:16px}
  .btn-primary{min-height:40px;padding:8px 14px}
  .chip-link{padding:6px 14px}
  .card-body{padding:16px 18px}
  .section-gap{padding-top:48px;padding-bottom:48px}
  .category-lead{padding-top:12px}
  .hero-title{font-size:27px;line-height:1.25}
  .hero-sub p{font-size:15px;line-height:1.75}
  .btn-lg{width:100%;padding:13px 20px}
  .card-media .badge{top:10px;left:10px}
  .detail-card-white{padding:20px 16px}
  .faq-q{padding:16px 18px;font-size:15px}
  h3.faq-question{font-size:15px}
  .group-title{justify-content:space-between}
}
 
@media screen and (min-width:769px){
  .nav-desktop{display:block!important}
  .mobile-header-nav{display:none!important}
}
.mobile-topbar{display:none}
@media screen and (max-width:768px){
 .mobile-topbar{display:flex;justify-content:space-between;align-items:center;width:100%}
 .desktop-top-link{display:none}
 &.header-inner .desktop-cta{display:none}
}