/* roulang page: index */
:root {
  --color-primary: #0E1A2B;
  --color-primary-light: #1B2F4A;
  --color-secondary: #2DE1C2;
  --color-accent: #F5B84C;
  --color-bg: #0B1421;
  --color-surface: rgba(255,255,255,0.04);
  --color-surface-border: rgba(255,255,255,0.1);
  --color-text: #E8EDF4;
  --color-text-secondary: #8BA0B8;
  --color-text-muted: #5A6E85;
  --gradient-primary: linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
  --gradient-text: linear-gradient(135deg, #FFFFFF 0%, #2DE1C2 100%);
  --gradient-btn: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
  --glow-color: rgba(45,225,194,0.35);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --radius-chip: 8px;
  --shadow-standard: 0 8px 30px rgba(0,0,0,0.35);
  --shadow-float: 0 16px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(45,225,194,0.15);
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 26px;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--color-secondary);
}
img {
  max-width: 100%;
  height: auto;
}
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  color: #ffffff;
  margin: 0 0 16px 0;
  line-height: 1.4;
}
p {
  margin-bottom: 16px;
}
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 12px 28px;
  transition: all 0.3s ease;
  border: none;
  font-size: 15px;
  line-height: 24px;
}
.btn:focus {
  outline: 3px solid rgba(45, 225, 194, 0.25);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
}
.btn-primary:hover,
.btn-primary:focus {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: 0 0 30px rgba(45, 225, 194, 0.5);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0) scale(0.98);
}
.btn-outline-light {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}
.btn-outline-light:hover,
.btn-outline-light:focus {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: rgba(45, 225, 194, 0.06);
}
.btn-outline-light:active {
  transform: scale(0.98);
}
.btn-ghost {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  padding: 12px 8px;
}
.btn-ghost:hover {
  color: var(--color-secondary);
}
.glass-card {
  position: relative;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  transition: all 0.35s ease;
}
.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 16px;
  right: 16px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  border-radius: 50%;
}
.glass-card:hover {
  border-color: rgba(45, 225, 194, 0.3);
  box-shadow: var(--shadow-float);
}
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-chip);
  font-size: 12px;
  line-height: 20px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid rgba(45, 225, 194, 0.3);
  color: var(--color-secondary);
  background: rgba(45, 225, 194, 0.06);
  white-space: nowrap;
}
.chip-gold {
  border-color: rgba(245, 184, 76, 0.4);
  color: var(--color-accent);
  background: rgba(245, 184, 76, 0.08);
}
.container {
  max-width: 1280px;
  padding-left: 24px;
  padding-right: 24px;
}
.text-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 14px;
  transition: color 0.2s ease;
}
.text-link:hover {
  color: var(--color-secondary);
}
.text-link .icon-arrow {
  display: inline-block;
  transition: transform 0.3s ease;
}
.text-link:hover .icon-arrow {
  transform: translateX(4px);
}
.section {
  padding: 96px 0;
  position: relative;
}
.section-head {
  margin-bottom: 48px;
  position: relative;
}
.section-head h2 {
  font-size: var(--font-h2, 26px);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-head .lead {
  color: var(--color-text-secondary);
  font-size: 15px;
  max-width: 640px;
}
.section-head .more-link {
  position: absolute;
  right: 0;
  top: 8px;
}
/* 导航栏 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 20, 33, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}
.navbar {
  padding: 14px 0;
  flex-wrap: nowrap;
}
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
  cursor: pointer;
}
.navbar-brand:hover {
  color: #ffffff;
}
.brand-icon {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}
.navbar-collapse {
  flex: 1;
  justify-content: center;
}
.navbar-nav {
  gap: 6px;
  align-items: center;
}
.nav-chip {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-chip:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.08);
}
.nav-chip.active {
  background: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
  color: #0E1A2B;
  border-color: transparent;
  font-weight: 600;
}
.btn-cta-nav {
  padding: 8px 22px;
  font-size: 14px;
  border-radius: var(--radius-sm);
  margin-left: 16px;
}
.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 6px 10px;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.25);
}
.navbar-toggler-icon {
  background-image: none;
  position: relative;
  width: 22px;
  height: 16px;
}
.navbar-toggler-icon::before {
  content: '';
  position: absolute;
  top: 1px;
  left: 0;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 6px 0 #fff, 0 12px 0 #fff;
}
/* Hero */
.hero-section {
  min-height: 100vh;
  padding: 160px 0 80px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 15%, rgba(45, 225, 194, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 5% 85%, rgba(245, 184, 76, 0.05) 0%, transparent 35%),
    linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
}
.hero-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 220px;
  background: url("/assets/images/backpic/back-1.webp?v=2024") no-repeat center bottom / cover;
  opacity: 0.12;
  border-radius: 0;
  z-index: 1;
  pointer-events: none;
}
.hero-section .container {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  padding: 6px 18px;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--color-secondary);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(45, 225, 194, 0.6);
}
.hero-title {
  font-size: 44px;
  line-height: 52px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #fff;
  margin-bottom: 24px;
}
.hero-title .gradient-text {
  display: inline;
}
.hero-sub {
  font-size: 16px;
  line-height: 30px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-bottom: 12px;
}
.hero-sub2 {
  font-size: 14px;
  line-height: 26px;
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}
.hero-visual {
  position: relative;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), 0 0 60px rgba(45, 225, 194, 0.08);
  background: rgba(255, 255, 255, 0.02);
}
.hero-visual img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
}
.hero-overlay-card {
  position: absolute;
  bottom: 18px;
  left: 18px;
  right: 18px;
  padding: 20px;
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(14, 26, 43, 0.9) 0%, rgba(27, 47, 74, 0.82) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
}
.hero-overlay-card h4 {
  font-size: 16px;
  margin-bottom: 6px;
  color: #fff;
}
.hero-overlay-card p {
  font-size: 13px;
  line-height: 20px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}
.hero-overlay-card .post-date {
  font-size: 12px;
  color: var(--color-text-muted);
}
/* 信任数据带 */
.trust-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: #0D1726;
  padding: 36px 0;
}
.trust-stats {
  display: flex;
  align-items: center;
  justify-content: space-around;
  text-align: center;
}
.trust-item {
  flex: 1;
  text-align: center;
  position: relative;
}
.trust-item + .trust-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
}
.trust-num {
  font-size: 32px;
  font-weight: 600;
  color: var(--color-secondary);
  line-height: 40px;
  display: block;
  font-family: Inter, Roboto, sans-serif;
}
.trust-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}
/* 功能分组 */
.feature-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  height: 100%;
  position: relative;
  overflow: hidden;
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(45, 225, 194, 0.1);
  border: 1px solid rgba(45, 225, 194, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: all 0.35s ease;
}
.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-secondary);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: all 0.35s ease;
}
.feature-card:hover .feature-icon {
  background: var(--color-secondary);
  transform: rotate(3deg);
}
.feature-card:hover .feature-icon svg {
  stroke: #fff;
}
.feature-card .badge-float {
  position: absolute;
  top: 20px;
  right: 20px;
}
.feature-title {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.feature-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text-secondary);
}
/* 场景 */
.scenario-wrap {
  padding-left: 48px;
}
.scenario-sticky {
  position: sticky;
  top: 120px;
}
.scenario-sticky h2 {
  font-size: 28px;
  margin-bottom: 16px;
}
.scenario-sticky .lead {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 20px;
}
.scenario-list {
  margin: 0;
}
.scenario-item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 32px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
}
.scenario-item:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.scenario-item:hover {
  padding-left: 20px;
}
.scenario-num {
  font-size: 32px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.12);
  font-family: Inter, Roboto, sans-serif;
  line-height: 40px;
  min-width: 52px;
  transition: color 0.3s ease;
}
.scenario-item:hover .scenario-num {
  color: var(--color-secondary);
}
.scenario-title {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}
.scenario-desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}
.scenario-arrow {
  color: rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
}
.scenario-item:hover .scenario-arrow {
  color: var(--color-secondary);
  transform: translateX(4px);
}
/* 案例 */
.case-section {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.case-image-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  position: relative;
}
.case-image-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}
.case-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.case-item {
  padding: 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}
.case-item:hover {
  border-color: rgba(45, 225, 194, 0.2);
  background: rgba(255, 255, 255, 0.035);
}
.case-item .chip {
  margin-bottom: 8px;
}
.case-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #fff;
}
.case-desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}
/* 价格 */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.price-card {
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.price-card.recommended {
  border-color: rgba(245, 184, 76, 0.35);
  background: linear-gradient(180deg, rgba(245, 184, 76, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(245, 184, 76, 0.2);
}
.price-card.recommended::after {
  content: '推荐';
  position: absolute;
  top: 16px;
  right: 20px;
  background: linear-gradient(135deg, #F5B84C, #E0972D);
  color: #0E1A2B;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 100px;
}
.price-name {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}
.price-amount {
  font-size: 40px;
  font-weight: 700;
  font-family: Inter, Roboto, sans-serif;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 4px;
}
.price-amount .currency {
  font-size: 20px;
  vertical-align: top;
  margin-right: 2px;
  color: var(--color-secondary);
}
.price-period {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}
.price-features {
  flex: 1;
  margin-bottom: 28px;
}
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 24px;
  color: var(--color-text-secondary);
  padding: 6px 0;
}
.price-features li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke: var(--color-secondary);
  margin-top: 3px;
}
.price-btn {
  width: 100%;
}
/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  padding: 28px 32px;
  margin-bottom: 16px;
  transition: border-color 0.3s ease;
}
.faq-item:hover {
  border-color: rgba(45, 225, 194, 0.2);
}
.faq-item h3 {
  font-size: 17px;
  color: #fff;
  margin-bottom: 12px;
  font-weight: 600;
}
.faq-item p {
  font-size: 14px;
  line-height: 26px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}
/* 最新动态 */
.latest-section {
  background: linear-gradient(180deg, rgba(11, 20, 33, 1) 0%, rgba(13, 23, 38, 1) 100%);
}
.featured-post {
  display: flex;
  align-items: stretch;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
  margin-bottom: 32px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  color: inherit;
  text-decoration: none;
  display: flex;
}
.featured-post:hover {
  border-color: rgba(45, 225, 194, 0.25);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  color: inherit;
}
.featured-post-img {
  width: 45%;
  overflow: hidden;
}
.featured-post-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.featured-post:hover .featured-post-img img {
  transform: scale(1.03);
}
.featured-post-content {
  flex: 1;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-post-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #fff;
}
.featured-post-content h3 a {
  color: inherit;
}
.featured-post-content p {
  font-size: 14px;
  line-height: 26px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}
.featured-post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
}
.featured-post-meta .post-date {
  font-size: 13px;
  color: var(--color-text-muted);
}
.post-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}
.post-card:hover {
  border-color: rgba(45, 225, 194, 0.25);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}
.post-card-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.post-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.post-card:hover .post-card-img img {
  transform: scale(1.05);
}
.post-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card-body h4 {
  font-size: 16px;
  line-height: 24px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #fff;
}
.post-card-body h4 a {
  color: inherit;
}
.post-card-body p {
  font-size: 14px;
  line-height: 22px;
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
  flex: 1;
}
.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}
.post-card-meta .post-date {
  font-size: 12px;
  color: var(--color-text-muted);
}
.empty-list {
  text-align: center;
  padding: 40px;
  color: var(--color-text-muted);
  font-size: 15px;
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
}
/* CTA */
.cta-section {
  padding: 96px 0 0;
}
.cta-card {
  border-radius: 24px;
  background:
    radial-gradient(circle at 80% 30%, rgba(45, 225, 194, 0.1) 0%, transparent 40%),
    linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 56px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(45, 225, 194, 0.4), transparent);
}
.cta-card h2 {
  font-size: 28px;
  margin-bottom: 12px;
}
.cta-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
  max-width: 520px;
}
/* 页脚 */
.site-footer {
  background: #08111C;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 64px 0 32px;
  margin-top: 96px;
}
.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand svg {
  width: 24px;
  height: 24px;
}
.footer-desc {
  font-size: 14px;
  line-height: 24px;
  color: var(--color-text-muted);
  max-width: 340px;
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--color-secondary);
}
.footer-contact p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}
.footer-contact .btn {
  margin-top: 8px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  margin-top: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-muted);
}
.footer-bottom .icp-placeholder {
  color: var(--color-text-muted);
}
/* 响应式 */
@media (max-width: 1199.98px) {
  .hero-title {
    font-size: 38px;
    line-height: 46px;
  }
  .hero-visual img {
    height: 310px;
  }
}
@media (max-width: 991.98px) {
  .section {
    padding: 72px 0;
  }
  .navbar-collapse {
    background: rgba(11, 20, 33, 0.98);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px;
    margin-top: 12px;
  }
  .navbar-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .nav-chip {
    width: 100%;
    justify-content: center;
    border-radius: 10px;
    padding: 12px 20px;
  }
  .btn-cta-nav {
    width: 100%;
    margin-left: 0;
    margin-top: 12px;
    justify-content: center;
  }
  .hero-section {
    padding: 130px 0 60px;
    min-height: auto;
  }
  .hero-title {
    font-size: 34px;
    line-height: 44px;
  }
  .hero-visual {
    margin-top: 48px;
  }
  .hero-visual img {
    height: 280px;
  }
  .scenario-wrap {
    padding-left: 0;
    margin-top: 40px;
  }
  .scenario-sticky {
    position: static;
    margin-bottom: 20px;
  }
  .price-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .price-card.recommended {
    grid-column: span 2;
    order: -1;
  }
  .cta-card {
    flex-direction: column;
    padding: 40px;
    text-align: center;
  }
  .cta-card p {
    margin-left: auto;
    margin-right: auto;
  }
  .featured-post {
    flex-direction: column;
  }
  .featured-post-img {
    width: 100%;
  }
  .featured-post-img img {
    height: 200px;
  }
}
@media (max-width: 767.98px) {
  .section {
    padding: 56px 0;
  }
  .hero-title {
    font-size: 28px;
    line-height: 38px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .trust-stats {
    flex-direction: column;
    gap: 24px;
  }
  .trust-item + .trust-item::before {
    display: none;
  }
  .price-grid {
    grid-template-columns: 1fr;
  }
  .price-card.recommended {
    grid-column: auto;
    order: initial;
  }
  .post-card-img {
    aspect-ratio: 16 / 10;
  }
  .section-head .more-link {
    position: static;
    display: block;
    margin-top: 8px;
  }
  .section-head {
    padding-right: 0;
  }
  .cta-card {
    padding: 32px 24px;
  }
  .cta-card h2 {
    font-size: 22px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  .scenario-item {
    gap: 16px;
    padding: 24px 4px;
  }
  .featured-post-content {
    padding: 24px;
  }
}
@media (max-width: 575.98px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .hero-section {
    padding: 120px 0 48px;
  }
  .hero-title {
    font-size: 26px;
    line-height: 36px;
  }
  .hero-overlay-card {
    position: relative;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 0 0 24px 24px;
    padding: 16px 20px;
  }
}

/* roulang page: category1 */
:root {
            --color-primary: #0E1A2B;
            --color-primary-light: #1B2F4A;
            --color-secondary: #2DE1C2;
            --color-accent: #F5B84C;
            --color-bg: #0B1421;
            --color-surface: rgba(255, 255, 255, 0.04);
            --color-surface-border: rgba(255, 255, 255, 0.1);
            --color-text: #E8EDF4;
            --color-text-secondary: #8BA0B8;
            --color-text-muted: #5A6E85;
            --gradient-primary: linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
            --gradient-text: linear-gradient(135deg, #FFFFFF 0%, #2DE1C2 100%);
            --gradient-btn: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
            --glow-color: rgba(45, 225, 194, 0.35);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(45, 225, 194, 0.15);
            --font-body: 15px/26px;
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", "Roboto", sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            background-color: var(--color-bg);
            color: var(--color-text);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* ========== Header / Nav ========== */
        .site-header {
            background: rgba(11, 20, 33, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }

        .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
        }

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

        .brand-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.04);
            border-radius: 8px;
            padding: 6px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.25);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .navbar-collapse {
            align-items: center;
        }

        .nav-chip-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .navbar-nav {
            gap: 6px;
        }

        .nav-item {
            list-style: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-chip:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text);
        }

        .nav-chip.active {
            background: var(--gradient-btn);
            color: #0E1A2B;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
        }

        .btn-cta-nav {
            padding: 8px 22px;
            font-size: 14px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            background: var(--gradient-btn);
            border: none;
            color: #0E1A2B;
            box-shadow: 0 0 20px rgba(45, 225, 194, 0.15);
            transition: all 0.25s ease;
            margin-left: 12px;
        }

        .btn-cta-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(45, 225, 194, 0.4);
            color: #0E1A2B;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-area {
            padding-top: 32px;
            padding-bottom: 0;
        }

        .breadcrumb {
            background: transparent;
            margin: 0;
            padding: 0;
            font-size: 14px;
        }

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

        .breadcrumb-item a:hover {
            color: var(--color-secondary);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            content: "›";
            color: var(--color-text-muted);
            padding: 0 6px;
        }

        .breadcrumb-item.active {
            color: var(--color-text);
        }

        /* ========== Category Head ========== */
        .category-head {
            padding: 40px 0 24px;
        }

        .category-head h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .category-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin-bottom: 20px;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* ========== Category Banner ========== */
        .category-banner {
            padding: 16px 0 64px;
        }

        .banner-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            z-index: 1;
        }

        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 20, 33, 0.92) 0%, rgba(11, 20, 33, 0.7) 45%, rgba(11, 20, 33, 0.2) 100%);
            z-index: 2;
        }

        .banner-content {
            position: relative;
            z-index: 3;
            padding: 48px;
            max-width: 620px;
        }

        .banner-kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-secondary);
            text-transform: uppercase;
            margin-bottom: 14px;
            background: rgba(45, 225, 194, 0.1);
            border: 1px solid rgba(45, 225, 194, 0.2);
            border-radius: 8px;
            padding: 4px 14px;
        }

        .banner-content h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            color: #fff;
            margin-bottom: 16px;
        }

        .banner-content p {
            font-size: 15px;
            line-height: 1.7;
            color: rgba(232, 237, 244, 0.8);
            margin-bottom: 28px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-btn);
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #0E1A2B;
            box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
            transition: all 0.25s ease;
        }

        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(45, 225, 194, 0.5);
            color: #0E1A2B;
        }

        .btn-ghost-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            transition: all 0.25s ease;
        }

        .btn-ghost-custom:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }

        /* ========== Two Column Info ========== */
        .category-columns {
            padding: 0 0 var(--space-section);
        }

        .info-card-large {
            background: linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            overflow: hidden;
            height: 100%;
            transition: all 0.3s ease;
        }

        .info-card-large::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
        }

        .info-card-large:hover {
            border-color: rgba(45, 225, 194, 0.3);
            box-shadow: var(--shadow-hover);
        }

        .card-icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(45, 225, 194, 0.1);
            border: 1px solid rgba(45, 225, 194, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--color-secondary);
            font-size: 20px;
        }

        .info-card-large h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .info-card-large p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
        }

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

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 14px;
            line-height: 1.6;
            color: var(--color-text);
        }

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

        .feature-list i {
            color: var(--color-secondary);
            margin-top: 4px;
            font-size: 13px;
            flex-shrink: 0;
        }

        .data-card {
            background: linear-gradient(160deg, rgba(45, 225, 194, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
            border: 1px solid rgba(45, 225, 194, 0.15);
            border-radius: var(--radius-lg);
            padding: 32px;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .data-card::after {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(45, 225, 194, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .data-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 20px;
        }

        .stat-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 18px 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
        }

        .stat-number {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-secondary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

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

        .flow-steps li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .flow-steps li:last-child {
            border-bottom: none;
        }

        .step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(45, 225, 194, 0.12);
            border: 1px solid rgba(45, 225, 194, 0.25);
            color: var(--color-secondary);
            font-size: 13px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }

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

        .step-text strong {
            color: var(--color-text);
            font-weight: 600;
            display: block;
            margin-bottom: 2px;
        }

        /* ========== Capability Cards ========== */
        .capability-section {
            padding: 0 0 var(--space-section);
        }

        .section-title-wrap {
            margin-bottom: 40px;
        }

        .section-title-wrap h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .section-title-wrap p {
            color: var(--color-text-muted);
            font-size: 14px;
        }

        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .capability-card {
            background: linear-gradient(160deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all 0.3s ease;
            position: relative;
        }

        .capability-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
        }

        .capability-card:hover {
            border-color: rgba(45, 225, 194, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .capability-card .card-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(245, 184, 76, 0.1);
            border: 1px solid rgba(245, 184, 76, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 18px;
            margin-bottom: 16px;
        }

        .capability-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .capability-card p {
            font-size: 14px;
            line-height: 1.6;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }

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

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

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(45, 225, 194, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.25s ease;
        }

        .faq-question:hover {
            color: var(--color-secondary);
        }

        .faq-question i {
            color: var(--color-secondary);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[aria-expanded="true"] .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-secondary);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 0 0 var(--space-section);
        }

        .cta-card {
            position: relative;
            border-radius: 24px;
            background: var(--gradient-primary);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 56px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 32px;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: 0;
            right: 30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(45, 225, 194, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-content {
            flex: 1 1 400px;
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }

        .cta-action {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            transition: all 0.25s ease;
        }

        .btn-outline-custom:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #08111C;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 64px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 225, 194, 0.4), transparent);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .footer-brand svg {
            width: 28px;
            height: 28px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-muted);
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 18px;
        }

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

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

        .footer-links a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--color-secondary);
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ========== Responsive ========== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                padding-top: 16px;
            }

            .navbar-nav {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
            }

            .nav-chip {
                width: 100%;
                justify-content: center;
                border-radius: 10px;
                padding: 10px 16px;
            }

            .btn-cta-nav {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }

            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cta-card {
                padding: 40px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --space-section: 72px;
            }

            .category-head h1 {
                font-size: 26px;
            }

            .banner-content {
                padding: 32px 24px;
            }

            .banner-content h2 {
                font-size: 22px;
            }

            .banner-wrap {
                min-height: 300px;
            }

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

            .info-card-large,
            .data-card {
                padding: 24px;
            }

            .cta-card {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }

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

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-head {
                padding-top: 24px;
            }

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

            .banner-content {
                padding: 28px 20px;
            }

            .banner-content h2 {
                font-size: 20px;
            }

            .info-card-large,
            .data-card {
                padding: 20px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px 16px;
                font-size: 13px;
            }

            .cta-card {
                padding: 28px 20px;
            }

            .cta-content h2 {
                font-size: 22px;
            }

            .cta-action {
                width: 100%;
            }

            .cta-action .btn-primary-custom,
            .cta-action .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: article */
/* ========== 设计变量 ========== */
:root {
  --color-primary: #0E1A2B;
  --color-primary-light: #1B2F4A;
  --color-secondary: #2DE1C2;
  --color-accent: #F5B84C;
  --color-bg: #0B1421;
  --color-surface: rgba(255, 255, 255, 0.04);
  --color-surface-hover: rgba(255, 255, 255, 0.08);
  --color-border: rgba(255, 255, 255, 0.1);
  --color-text: #E8EDF4;
  --color-text-secondary: #8BA0B8;
  --color-text-muted: #5A6E85;
  --gradient-primary: linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
  --gradient-btn: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
  --glow-color: rgba(45, 225, 194, 0.35);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-standard: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(45, 225, 194, 0.15);
  --transition-base: all 0.3s ease;
}

/* ========== Reset / Base ========== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--color-secondary);
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 3px;
  border-radius: 6px;
  box-shadow: 0 0 0 4px rgba(45, 225, 194, 0.15);
}

/* ========== 容器 ========== */
.container {
  max-width: 1280px;
  padding-left: 24px;
  padding-right: 24px;
}

/* ========== 通用按钮 ========== */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 10px 24px;
  border: none;
  transition: var(--transition-base);
  letter-spacing: 0.01em;
  font-size: 15px;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #fff;
  box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(45, 225, 194, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 14px rgba(45, 225, 194, 0.3);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-2px);
  background: rgba(45, 225, 194, 0.06);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* ========== 导航栏 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(11, 20, 33, 0.85);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.4s ease;
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.navbar {
  padding: 14px 0;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text) !important;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.navbar-brand:hover {
  color: #fff !important;
}

.brand-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.navbar-nav {
  gap: 8px;
  align-items: center;
}

.navbar-nav .nav-item {
  margin: 0;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(232, 237, 244, 0.82);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: var(--transition-base);
  white-space: nowrap;
}

.nav-chip:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.nav-chip.active {
  background: var(--gradient-btn);
  color: #0E1A2B !important;
  font-weight: 600;
  box-shadow: 0 0 16px rgba(45, 225, 194, 0.25);
  border-color: transparent;
}

.btn-cta-nav {
  padding: 8px 20px;
  font-size: 14px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.navbar-toggler {
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 6px 10px;
  border-radius: 8px;
  transition: var(--transition-base);
}

.navbar-toggler:hover {
  border-color: rgba(45, 225, 194, 0.4);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.2);
  border-color: var(--color-secondary);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(232,237,244,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 22px;
  height: 22px;
}

/* ========== 面包屑 ========== */
.breadcrumb-wrap {
  padding: 24px 0 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  background: rgba(255, 255, 255, 0.015);
}

.breadcrumb {
  margin: 0;
  padding: 12px 0;
  background: transparent;
}

.breadcrumb-item {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.breadcrumb-item a {
  color: var(--color-text-secondary);
}

.breadcrumb-item a:hover {
  color: var(--color-secondary);
}

.breadcrumb-item.active {
  color: #fff;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  color: var(--color-text-muted);
  padding: 0 8px;
}

/* ========== 文章头部 ========== */
.article-head {
  position: relative;
  padding: 64px 0 44px;
  background:
    linear-gradient(180deg, rgba(11, 20, 33, 0.92) 0%, rgba(14, 26, 43, 0.96) 100%),
    url('/assets/images/backpic/back-1.webp?t=2026') center / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.article-head::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(45, 225, 194, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.article-head-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  text-align: left;
}

.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-bottom: 12px;
  background: rgba(45, 225, 194, 0.08);
  border: 1px solid rgba(45, 225, 194, 0.2);
  padding: 5px 14px;
  border-radius: 999px;
  font-weight: 500;
}

.article-head h1 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
  margin: 16px 0 18px;
  letter-spacing: 0.01em;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 24px;
}

.meta-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.meta-date::before {
  content: '';
  width: 14px;
  height: 14px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%235A6E85' stroke-width='1.5'%3E%3Crect x='2' y='3' width='12' height='11' rx='2'/%3E%3Cpath d='M2 6h12M5 1v4M11 1v4'/%3E%3C/svg%3E") center / contain no-repeat;
}

.meta-cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--color-secondary);
  border: 1px solid rgba(45, 225, 194, 0.35);
  background: rgba(45, 225, 194, 0.06);
}

.article-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-secondary), transparent);
  border-radius: 2px;
}

/* ========== 正文区 ========== */
.article-body-wrap {
  padding: 48px 0 24px;
}

.article-body {
  max-width: 780px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 30px;
  color: #C8D2E0;
}

.article-byline {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: 12px;
  background: rgba(45, 225, 194, 0.05);
  border: 1px solid rgba(45, 225, 194, 0.14);
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

.byline-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  box-shadow: 0 0 10px rgba(45, 225, 194, 0.5);
  flex-shrink: 0;
}

.article-body p {
  margin-bottom: 24px;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  margin: 44px 0 18px;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  margin: 36px 0 14px;
  line-height: 1.4;
}

.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin: 28px 0 12px;
  line-height: 1.4;
}

.article-body img {
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin: 28px 0;
  width: 100%;
  height: auto;
}

.article-body blockquote {
  border-left: 3px solid var(--color-secondary);
  background: rgba(45, 225, 194, 0.05);
  border-radius: 8px;
  padding: 18px 22px;
  color: #9FB4CB;
  margin: 28px 0;
  font-size: 15px;
  line-height: 28px;
}

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

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body a {
  color: var(--color-secondary);
  border-bottom: 1px solid transparent;
}

.article-body a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.article-body li {
  margin-bottom: 8px;
  line-height: 28px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}

.article-body th,
.article-body td {
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-weight: 600;
}

.article-body hr {
  border: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 32px 0;
}

/* 空态 */
.article-empty {
  text-align: center;
  padding: 60px 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
}

.article-empty p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

/* ========== 标签区 ========== */
.article-tags {
  max-width: 780px;
  margin: 0 auto;
  padding: 28px 0 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.tag-chip {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-secondary);
  font-size: 13px;
  transition: var(--transition-base);
}

.tag-chip:hover {
  border-color: rgba(45, 225, 194, 0.3);
  color: var(--color-secondary);
  background: rgba(45, 225, 194, 0.05);
}

/* ========== 相关推荐 ========== */
.related-section {
  padding: 56px 0 48px;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-head h3 {
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  margin: 0;
  letter-spacing: 0.01em;
}

.section-head h3::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 22px;
  background: var(--gradient-btn);
  border-radius: 4px;
  margin-right: 12px;
  vertical-align: -3px;
}

.back-link {
  font-size: 14px;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-base);
}

.back-link:hover {
  color: var(--color-secondary);
  transform: translateX(-4px);
}

.related-card {
  display: block;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  transition: var(--transition-base);
  color: inherit;
}

.related-card:hover {
  border-color: rgba(45, 225, 194, 0.3);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  color: inherit;
}

.related-card-img {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-primary-light);
}

.related-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(11, 20, 33, 0.35) 100%);
  pointer-events: none;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.related-card-body {
  padding: 20px 24px 24px;
}

.related-card-body h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.5;
  transition: color 0.3s ease;
}

.related-card:hover .related-card-body h4 {
  color: var(--color-secondary);
}

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

.related-card-body span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  transition: color 0.3s ease;
}

.related-card:hover .related-card-body span {
  color: var(--color-secondary);
}

/* ========== CTA 区 ========== */
.cta-section {
  padding: 72px 0 80px;
}

.cta-card {
  position: relative;
  border-radius: 24px;
  padding: 52px 56px;
  background: var(--gradient-primary);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-card::before {
  content: '';
  position: absolute;
  right: 20%;
  top: -40%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(45, 225, 194, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card::after {
  content: '';
  position: absolute;
  left: 8%;
  bottom: -100px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(245, 184, 76, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  flex: 1 1 480px;
}

.cta-content h3 {
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.cta-content p {
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-bottom: 0;
  font-size: 15px;
  line-height: 1.75;
}

.cta-action {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 14px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* ========== 页脚 ========== */
.site-footer {
  background: #08111C;
  border-top: 1px solid rgba(45, 225, 194, 0.15);
  padding: 64px 0 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-brand svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.footer-desc {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 360px;
  margin: 0;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

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

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

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 14px;
  transition: var(--transition-base);
  position: relative;
}

.footer-links a:hover {
  color: var(--color-secondary);
  padding-left: 6px;
}

.footer-contact p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 22px 0;
  margin-top: 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.icp-placeholder {
  display: inline-block;
}

/* ========== 响应式断点 ========== */
@media (max-width: 991.98px) {
  .navbar-nav {
    padding: 16px 0;
    gap: 6px;
    align-items: stretch;
  }

  .nav-chip {
    display: flex;
    width: 100%;
    border-radius: 10px;
    padding: 12px 20px;
  }

  .btn-cta-nav {
    display: block;
    width: 100%;
    text-align: center;
    margin-top: 8px;
  }

  .article-head {
    padding: 48px 0 36px;
  }

  .article-head h1 {
    font-size: 28px;
  }

  .cta-card {
    padding: 40px 32px;
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-action {
    width: 100%;
  }

  .cta-action .btn {
    flex: 1;
  }
}

@media (max-width: 767.98px) {
  .breadcrumb-wrap {
    padding-top: 16px;
  }

  .article-head h1 {
    font-size: 24px;
    line-height: 1.35;
  }

  .article-head {
    padding: 40px 0 32px;
  }

  .article-body-wrap {
    padding: 36px 0 16px;
  }

  .article-body {
    font-size: 15px;
    line-height: 28px;
  }

  .article-body h2 {
    font-size: 22px;
  }

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

  .related-section {
    padding: 44px 0 36px;
  }

  .section-head {
    margin-bottom: 24px;
  }

  .cta-section {
    padding: 48px 0 56px;
  }

  .cta-card {
    padding: 36px 24px;
    border-radius: 20px;
  }

  .cta-content h3 {
    font-size: 22px;
  }

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

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

  .site-footer {
    padding-top: 48px;
  }

  .footer-bottom {
    margin-top: 40px;
    text-align: center;
    justify-content: center;
  }
}

@media (max-width: 575.98px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

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

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

  .article-kicker {
    font-size: 12px;
    padding: 4px 12px;
  }

  .article-head h1 {
    font-size: 21px;
  }

  .article-meta {
    gap: 10px;
  }

  .article-byline {
    font-size: 13px;
    padding: 12px 16px;
  }

  .related-card-body {
    padding: 16px 18px 20px;
  }

  .related-card-body h4 {
    font-size: 15px;
  }

  .section-head h3 {
    font-size: 20px;
  }

  .section-head h3::before {
    height: 18px;
  }

  .cta-content h3 {
    font-size: 20px;
  }

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

/* roulang page: category2 */
:root {
            --color-primary: #0E1A2B;
            --color-primary-light: #1B2F4A;
            --color-secondary: #2DE1C2;
            --color-accent: #F5B84C;
            --color-bg: #0B1421;
            --color-surface: rgba(255, 255, 255, 0.04);
            --color-surface-border: rgba(255, 255, 255, 0.1);
            --color-text: #E8EDF4;
            --color-text-secondary: #8BA0B8;
            --color-text-muted: #5A6E85;
            --gradient-primary: linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
            --gradient-text: linear-gradient(135deg, #FFFFFF 0%, #2DE1C2 100%);
            --gradient-btn: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
            --glow-color: rgba(45, 225, 194, 0.35);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-standard: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(45, 225, 194, 0.15);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            font-size: 15px;
            line-height: 26px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a:hover {
            color: #5ef0d5;
        }

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

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
            margin-left: auto;
            margin-right: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 20, 33, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .site-header .navbar {
            padding: 16px 0;
            min-height: 72px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            padding: 0;
            margin: 0;
        }

        .site-header .navbar-brand:hover {
            color: var(--color-text);
        }

        .site-header .brand-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }

        .site-header .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 6px 10px;
            background: transparent;
        }

        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.2);
        }

        .site-header .navbar-toggler-icon {
            display: inline-block;
            width: 22px;
            height: 22px;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: center;
            background-size: 100%;
        }

        .site-header .navbar-collapse {
            flex-grow: 0;
        }

        .site-header .navbar-nav {
            gap: 8px;
            align-items: center;
        }

        .site-header .nav-item {
            list-style: none;
        }

        .site-header .nav-chip {
            display: inline-block;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 24px;
            transition: all 0.3s ease;
            line-height: 1.4;
            white-space: nowrap;
        }

        .site-header .nav-chip:hover,
        .site-header .nav-chip:focus {
            color: var(--color-text);
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.12);
            outline: none;
        }

        .site-header .nav-chip.active {
            color: #0E1A2B;
            background: var(--gradient-btn);
            border-color: transparent;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(45, 225, 194, 0.25);
        }

        .site-header .btn-cta-nav {
            margin-left: 16px;
            padding: 9px 24px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 10px;
            white-space: nowrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            line-height: 1.4;
        }

        .btn:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.25);
        }

        .btn-primary {
            background: var(--gradient-btn);
            color: #0E1A2B;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            color: #0E1A2B;
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(45, 225, 194, 0.5);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: 8px;
        }

        .btn-outline-light {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--color-text);
        }

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

        .breadcrumb-wrap {
            padding: 24px 0 0;
            background: transparent;
        }

        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            padding: 0;
            background: transparent;
            font-size: 14px;
        }

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

        .breadcrumb-wrap .breadcrumb-item a {
            color: var(--color-text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--color-text);
        }

        .breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before {
            content: "›";
            color: var(--color-text-muted);
            padding: 0 8px;
        }

        .page-header {
            padding: 48px 0 32px;
        }

        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .page-header h1 .highlight {
            background: var(--gradient-text);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-header-desc {
            font-size: 15px;
            line-height: 28px;
            color: var(--color-text-secondary);
            max-width: 720px;
            margin-bottom: 28px;
        }

        .header-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .header-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .header-chip:hover {
            border-color: rgba(45, 225, 194, 0.3);
            color: var(--color-text);
        }

        .header-chip .chip-icon {
            margin-right: 6px;
            font-size: 14px;
        }

        .alternating-section {
            padding: 48px 0 24px;
        }

        .alternating-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-bottom: 88px;
        }

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

        .alternating-row:nth-child(even) .alternating-image {
            order: 2;
        }

        .alternating-row:nth-child(even) .alternating-text {
            order: 1;
        }

        .alternating-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-standard);
            transition: box-shadow 0.4s ease, transform 0.4s ease;
        }

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

        .alternating-image img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            display: block;
            transition: transform 0.6s ease;
        }

        .alternating-image:hover img {
            transform: scale(1.03);
        }

        .alternating-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 20, 33, 0) 40%, rgba(11, 20, 33, 0.4) 100%);
            pointer-events: none;
        }

        .alternating-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background: rgba(11, 20, 33, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
            color: var(--color-text);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .alternating-tag .tag-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-secondary);
            margin-right: 8px;
            box-shadow: 0 0 8px rgba(45, 225, 194, 0.6);
        }

        .alternating-text {
            padding: 8px 0;
        }

        .alternating-text .section-label {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-secondary);
            letter-spacing: 0.04em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .alternating-text .section-label::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--color-secondary);
            margin-right: 10px;
            display: inline-block;
        }

        .alternating-text h3 {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .alternating-text p {
            font-size: 15px;
            line-height: 28px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        .alternating-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-secondary);
            text-decoration: none;
            transition: gap 0.3s ease, color 0.3s ease;
            padding: 0;
            background: none;
            border: none;
            cursor: pointer;
        }

        .alternating-link:hover {
            color: #5ef0d5;
            gap: 14px;
        }

        .alternating-link .link-arrow {
            font-size: 18px;
            line-height: 1;
        }

        .cta-section {
            padding: 64px 0 88px;
        }

        .cta-card {
            position: relative;
            border-radius: 24px;
            background: var(--gradient-primary);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 48px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            overflow: hidden;
            box-shadow: var(--shadow-standard);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: 0;
            right: 30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(45, 225, 194, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
        }

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

        .cta-content h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-content p {
            font-size: 15px;
            line-height: 26px;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0;
        }

        .cta-btn-wrap {
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .site-footer {
            background: #08111C;
            padding: 72px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 320px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 225, 194, 0.5), transparent);
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .site-footer .footer-brand svg {
            width: 28px;
            height: 28px;
        }

        .site-footer .footer-desc {
            color: var(--color-text-muted);
            font-size: 14px;
            line-height: 24px;
            margin-bottom: 0;
            max-width: 320px;
        }

        .site-footer .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }

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

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

        .site-footer .footer-links a {
            color: var(--color-text-muted);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .site-footer .footer-links a:hover {
            color: var(--color-secondary);
            padding-left: 4px;
        }

        .site-footer .footer-contact {
            color: var(--color-text-muted);
            font-size: 14px;
            line-height: 24px;
        }

        .site-footer .footer-contact p {
            margin-bottom: 16px;
        }

        .site-footer .footer-bottom {
            margin-top: 56px;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text-muted);
            font-size: 13px;
        }

        .site-footer .footer-bottom .icp-placeholder {
            opacity: 0.6;
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: rgba(11, 20, 33, 0.98);
                padding: 20px;
                border-radius: 12px;
                margin-top: 12px;
                border: 1px solid rgba(255, 255, 255, 0.08);
            }

            .site-header .navbar-nav {
                flex-direction: column;
                gap: 8px;
                width: 100%;
                align-items: stretch;
                margin-bottom: 16px;
            }

            .site-header .nav-chip {
                display: block;
                text-align: center;
                white-space: normal;
            }

            .site-header .btn-cta-nav {
                width: 100%;
                margin-left: 0;
            }

            .alternating-row {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 64px;
            }

            .alternating-row:nth-child(even) .alternating-image {
                order: 1;
            }

            .alternating-row:nth-child(even) .alternating-text {
                order: 2;
            }

            .alternating-image img {
                height: 220px;
            }

            .cta-card {
                flex-direction: column;
                padding: 40px 28px;
                gap: 28px;
                text-align: center;
            }

            .cta-content h2 {
                font-size: 22px;
            }

            .cta-content p {
                margin-left: auto;
                margin-right: auto;
            }

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

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

            .site-footer .footer-copyright-main {
                margin-top: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .page-header {
                padding: 32px 0 24px;
            }

            .page-header h1 {
                font-size: 26px;
                line-height: 1.35;
            }

            .page-header-desc {
                font-size: 14px;
                line-height: 26px;
            }

            .header-chips {
                gap: 8px;
            }

            .header-chip {
                padding: 5px 14px;
                font-size: 12px;
            }

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

            .alternating-row {
                gap: 24px;
                margin-bottom: 56px;
            }

            .alternating-image img {
                height: 180px;
            }

            .alternating-text h3 {
                font-size: 20px;
            }

            .alternating-text p {
                font-size: 14px;
                line-height: 26px;
            }

            .cta-section {
                padding: 48px 0 64px;
            }

            .cta-card {
                padding: 32px 20px;
                border-radius: 16px;
            }

            .site-footer {
                padding: 56px 0 0;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .site-header .navbar {
                padding: 12px 0;
                min-height: 64px;
            }

            .site-header .navbar-brand {
                font-size: 17px;
            }

            .site-header .brand-icon {
                width: 28px;
                height: 28px;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .alternating-text h3 {
                font-size: 18px;
            }

            .alternating-link {
                font-size: 14px;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #0E1A2B;
            --color-primary-light: #1B2F4A;
            --color-secondary: #2DE1C2;
            --color-accent: #F5B84C;
            --color-bg: #0B1421;
            --color-surface: rgba(255, 255, 255, 0.04);
            --color-surface-border: rgba(255, 255, 255, 0.1);
            --color-text: #E8EDF4;
            --color-text-secondary: #8BA0B8;
            --color-text-muted: #5A6E85;
            --gradient-primary: linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
            --gradient-text: linear-gradient(135deg, #FFFFFF 0%, #2DE1C2 100%);
            --gradient-btn: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
            --glow-color: rgba(45, 225, 194, 0.35);
            --font-body: 15px/26px;
            --font-sm: 13px/20px;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-standard: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(45, 225, 194, 0.15);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 15px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #7EF0DC;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }
        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            position: relative;
        }
        .section-pad {
            padding: 96px 0;
        }
        @media (max-width: 991px) {
            .section-pad {
                padding: 72px 0;
            }
        }
        @media (max-width: 767px) {
            .section-pad {
                padding: 56px 0;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            background: rgba(11, 20, 33, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }
        .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text) !important;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .navbar-brand .brand-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }
        .navbar-brand:hover {
            color: var(--color-text) !important;
        }
        .navbar-nav {
            gap: 6px;
        }
        .nav-chip {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            color: #B8C7DC !important;
            font-size: 14px;
            font-weight: 500;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .nav-chip:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff !important;
            border-color: rgba(255, 255, 255, 0.1);
        }
        .nav-chip.active {
            background: linear-gradient(135deg, #2DE1C2, #1B9C8A);
            color: #06121F !important;
            font-weight: 600;
            box-shadow: 0 0 16px rgba(45, 225, 194, 0.25);
        }
        .btn-cta-nav {
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            background: var(--gradient-btn);
            color: #fff !important;
            border: none;
            box-shadow: 0 0 16px rgba(45, 225, 194, 0.2);
            transition: all 0.25s ease;
        }
        .btn-cta-nav:hover {
            box-shadow: 0 0 28px rgba(45, 225, 194, 0.45);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border-color: rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991px) {
            .navbar-collapse {
                padding-top: 16px;
            }
            .navbar-nav {
                gap: 4px;
                margin-bottom: 12px;
            }
            .nav-chip {
                display: block;
                text-align: center;
                padding: 10px 16px;
                font-size: 15px;
            }
            .btn-cta-nav {
                width: 100%;
                text-align: center;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            padding: 24px 0 0;
        }
        .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
            font-size: 14px;
        }
        .breadcrumb-item a {
            color: var(--color-text-secondary);
        }
        .breadcrumb-item a:hover {
            color: var(--color-secondary);
        }
        .breadcrumb-item.active {
            color: #fff;
            font-weight: 500;
        }
        .breadcrumb-item + .breadcrumb-item::before {
            color: var(--color-text-muted);
            content: "›";
        }

        /* ===== 页面头部 ===== */
        .page-head {
            padding: 48px 0 24px;
        }
        .page-head h1 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .page-head .page-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .tag-chip-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--color-text-secondary);
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .tag-chip:hover {
            border-color: rgba(45, 225, 194, 0.3);
            color: var(--color-secondary);
        }

        /* ===== 安全领域概览 ===== */
        .security-areas {
            padding: 32px 0 48px;
        }
        .security-areas .area-card {
            background: linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .security-areas .area-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
        }
        .security-areas .area-card:hover {
            border-color: rgba(45, 225, 194, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .security-areas .area-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(45, 225, 194, 0.1);
            color: var(--color-secondary);
            font-size: 20px;
            margin-bottom: 16px;
            transition: all 0.3s ease;
        }
        .security-areas .area-card:hover .area-icon {
            transform: rotate(3deg);
            background: rgba(45, 225, 194, 0.2);
        }
        .security-areas .area-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .security-areas .area-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 手风琴区 ===== */
        .accordion-section {
            padding: 32px 0 64px;
        }
        .accordion-section .section-inner {
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }
        .accordion-section .accordion-wrap {
            flex: 0 0 62%;
            max-width: 62%;
        }
        .accordion-section .side-card {
            flex: 1;
            max-width: 38%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-standard);
            position: sticky;
            top: 100px;
        }
        .accordion-section .side-card img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .accordion-section .side-card .side-body {
            background: var(--gradient-primary);
            padding: 24px;
        }
        .accordion-section .side-card .side-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .accordion-section .side-card .side-body p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 991px) {
            .accordion-section .section-inner {
                flex-direction: column;
            }
            .accordion-section .accordion-wrap,
            .accordion-section .side-card {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .accordion-section .side-card {
                position: static;
            }
        }

        /* 手风琴样式 */
        .accordion {
            background: transparent;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .accordion-item {
            background: linear-gradient(160deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            border: 1px solid rgba(255, 255, 255, 0.08) !important;
            border-radius: var(--radius-md) !important;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .accordion-item:hover {
            border-color: rgba(45, 225, 194, 0.2) !important;
        }
        .accordion-header {
            background: transparent !important;
        }
        .accordion-button {
            background: transparent !important;
            color: var(--color-text) !important;
            font-size: 16px;
            font-weight: 600;
            padding: 22px 24px;
            border: none;
            box-shadow: none !important;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .accordion-button:not(.collapsed) {
            color: var(--color-secondary) !important;
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%232DE1C2' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='M2 5l8 8 8-8'/%3e%3c/svg%3e");
            background-size: 14px;
            transition: all 0.3s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }
        .accordion-button .acc-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(45, 225, 194, 0.1);
            color: var(--color-secondary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .accordion-body {
            padding: 0 24px 24px 72px;
            color: #B8C7DC;
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 16px;
            margin-top: 0;
        }
        .accordion-body p {
            margin-bottom: 10px;
        }
        .accordion-body p:last-child {
            margin-bottom: 0;
        }
        @media (max-width: 767px) {
            .accordion-button {
                font-size: 15px;
                padding: 18px 18px;
            }
            .accordion-button .acc-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
            .accordion-body {
                padding: 14px 18px 18px;
            }
        }

        /* ===== 数据指标 ===== */
        .trust-stats {
            padding: 48px 0 64px;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .trust-stats .stat-item {
            text-align: center;
            padding: 24px 16px;
        }
        .trust-stats .stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1.2;
            letter-spacing: 0.02em;
        }
        .trust-stats .stat-num .unit {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin-left: 4px;
        }
        .trust-stats .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 8px;
        }
        .trust-stats .divider-line {
            width: 1px;
            background: rgba(255, 255, 255, 0.08);
            align-self: stretch;
            margin: 16px 0;
        }
        @media (max-width: 767px) {
            .trust-stats .divider-line {
                display: none;
            }
            .trust-stats .stat-item {
                padding: 16px 8px;
            }
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 72px 0;
        }
        .cta-card {
            background: var(--gradient-primary);
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-standard);
        }
        .cta-card::before {
            content: "";
            position: absolute;
            top: -80px;
            right: 15%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(45, 225, 194, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .cta-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            max-width: 500px;
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .cta-card .btn-wrapper {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 767px) {
            .cta-card {
                padding: 40px 24px;
                border-radius: 20px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
        }

        /* ===== 按钮通用 ===== */
        .btn-primary {
            background: var(--gradient-btn);
            border: none;
            color: #fff !important;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 12px 32px;
            box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
            transition: all 0.25s ease;
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(45, 225, 194, 0.5);
            transform: translateY(-2px);
            color: #fff !important;
        }
        .btn-outline-light-custom {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--color-text) !important;
            font-weight: 500;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            transition: all 0.25s ease;
        }
        .btn-outline-light-custom:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary) !important;
            background: rgba(255, 255, 255, 0.03);
        }
        .btn-link-arrow {
            color: var(--color-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 0;
            border: none;
            background: transparent;
            transition: all 0.25s ease;
        }
        .btn-link-arrow:hover {
            color: #7EF0DC;
            transform: translateX(4px);
        }
        .btn-link-arrow i {
            margin-left: 4px;
            transition: transform 0.25s ease;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #08111C;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 24px;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand svg {
            width: 28px;
            height: 28px;
        }
        .site-footer .footer-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 0;
        }
        .site-footer .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: color 0.2s ease;
        }
        .site-footer .footer-links a:hover {
            color: var(--color-secondary);
        }
        .site-footer .footer-contact p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
            gap: 8px;
        }
        @media (max-width: 767px) {
            .site-footer {
                padding: 48px 0 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 焦点状态 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 滚动条（可选） ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(45, 225, 194, 0.3);
        }

/* roulang page: category4 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #0E1A2B;
            --color-primary-light: #1B2F4A;
            --color-secondary: #2DE1C2;
            --color-accent: #F5B84C;
            --color-bg: #0B1421;
            --color-surface: rgba(255, 255, 255, 0.04);
            --color-surface-border: rgba(255, 255, 255, 0.1);
            --color-text: #E8EDF4;
            --color-text-secondary: #8BA0B8;
            --color-text-muted: #5A6E85;
            --gradient-primary: linear-gradient(135deg, #0E1A2B 0%, #1B2F4A 100%);
            --gradient-btn: linear-gradient(135deg, #2DE1C2 0%, #1B9C8A 100%);
            --glow-color: rgba(45, 225, 194, 0.35);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-standard: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(45, 225, 194, 0.15);
            --font-body: 15px/26px;
            --font-sm: 13px/20px;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #7df0d9;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 通用标题层级 ========== */
        .section-title {
            font-size: 26px;
            font-weight: 600;
            line-height: 34px;
            letter-spacing: 0.01em;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 26px;
            margin-bottom: 32px;
            max-width: 560px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 22px;
                line-height: 30px;
            }
        }

        /* ========== 按钮规范 ========== */
        .btn-primary {
            background: var(--gradient-btn);
            border: none;
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            box-shadow: 0 0 20px rgba(45, 225, 194, 0.2);
            transition: box-shadow 0.3s ease, transform 0.3s ease, background 0.3s ease;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #37e8c8 0%, #1eab98 100%);
            box-shadow: 0 0 30px rgba(45, 225, 194, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(45, 225, 194, 0.3);
        }
        .btn-outline-light {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--color-text);
            font-weight: 500;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            transition: border-color 0.25s, color 0.25s, background 0.25s;
        }
        .btn-outline-light:hover,
        .btn-outline-light:focus {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(45, 225, 194, 0.05);
        }
        .btn-cta-nav {
            padding: 8px 20px;
            font-size: 13px;
            border-radius: 10px;
        }

        /* ========== 导航栏 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(11, 20, 33, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.45);
        }
        .navbar {
            padding: 14px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
        }
        .navbar-brand:hover {
            color: var(--color-text);
        }
        .brand-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 6px;
        }
        .nav-chip {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #B8C6D8;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid transparent;
            transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.2s;
        }
        .nav-chip:hover,
        .nav-chip:focus {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text);
        }
        .nav-chip.active {
            background: var(--gradient-btn);
            color: #07131c;
            font-weight: 600;
            border-color: transparent;
            box-shadow: 0 0 12px rgba(45, 225, 194, 0.25);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.25);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(255,255,255,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }
        @media (max-width: 991.98px) {
            .navbar-nav {
                padding: 14px 0 6px;
                gap: 8px;
            }
            .nav-chip {
                display: block;
                width: 100%;
                text-align: center;
                padding: 10px 16px;
            }
            .btn-cta-nav {
                margin: 12px 0 4px;
                width: 100%;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 16px;
            }
            .nav-chip {
                font-size: 14px;
                padding: 9px 14px;
            }
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            padding-top: 28px;
            padding-bottom: 0;
        }
        .breadcrumb {
            margin-bottom: 0;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .breadcrumb-item a {
            color: var(--color-text-muted);
        }
        .breadcrumb-item a:hover {
            color: var(--color-secondary);
        }
        .breadcrumb-item.active {
            color: var(--color-text);
        }
        .breadcrumb-item+.breadcrumb-item::before {
            content: "›";
            color: var(--color-text-muted);
        }

        /* ========== 页面头部 ========== */
        .category-hero {
            padding: 48px 0 40px;
            position: relative;
            background: var(--gradient-primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .category-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 280px;
            background: radial-gradient(circle, rgba(45, 225, 194, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero h1 {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            line-height: 1.5;
        }
        .category-hero .hero-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 640px;
            line-height: 28px;
            margin-bottom: 18px;
        }
        .hero-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hero-chips .chip {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 6px 14px;
            font-size: 13px;
            color: var(--color-text-secondary);
            transition: border-color 0.25s, background 0.25s;
        }
        .hero-chips .chip:hover {
            border-color: rgba(45, 225, 194, 0.4);
            background: rgba(45, 225, 194, 0.08);
        }
        @media (max-width: 575.98px) {
            .category-hero {
                padding: 32px 0 28px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
        }

        /* ========== 主内容：列表+侧栏 ========== */
        .content-section {
            padding: 56px 0 72px;
        }
        .list-main .list-intro {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 28px;
            margin-bottom: 24px;
            padding: 20px 24px;
            background: var(--color-surface);
            border: 1px solid var(--color-surface-border);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--color-secondary);
        }
        .list-items {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.25s, padding-left 0.3s ease;
            border-radius: 12px;
        }
        .list-item:hover {
            background: rgba(255, 255, 255, 0.03);
            padding-left: 28px;
        }
        .list-item:last-child {
            border-bottom: none;
        }
        .list-item .item-num {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-secondary);
            font-family: "Inter", "Roboto", sans-serif;
            min-width: 40px;
            background: rgba(45, 225, 194, 0.08);
            border-radius: 8px;
            text-align: center;
            padding: 4px 0;
            line-height: 1.6;
        }
        .list-item .item-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .list-item .item-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 24px;
            margin-bottom: 0;
        }
        .list-item .arrow-icon {
            margin-left: auto;
            color: var(--color-text-muted);
            font-size: 18px;
            transition: transform 0.3s, color 0.3s;
            white-space: nowrap;
        }
        .list-item:hover .arrow-icon {
            transform: translateX(4px);
            color: var(--color-secondary);
        }
        @media (max-width: 575.98px) {
            .list-item {
                gap: 14px;
                padding: 18px 12px;
            }
            .list-item:hover {
                padding-left: 16px;
            }
            .list-item .item-num {
                min-width: 32px;
                font-size: 13px;
            }
            .list-item .item-body h3 {
                font-size: 15px;
            }
            .list-item .item-body p {
                font-size: 13px;
                line-height: 22px;
            }
        }

        /* ========== 侧栏卡片 ========== */
        .sidebar-wrap {
            position: sticky;
            top: 96px;
        }
        .sidebar-card {
            background: var(--gradient-primary);
            border: 1px solid var(--color-surface-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-standard);
            position: relative;
            overflow: hidden;
        }
        .sidebar-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 225, 194, 0.4), transparent);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .sidebar-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 24px;
        }
        .sidebar-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: background 0.25s, color 0.25s, padding-left 0.25s;
        }
        .sidebar-links a::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-secondary);
            opacity: 0.6;
            flex-shrink: 0;
        }
        .sidebar-links a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text);
            padding-left: 18px;
        }
        .sidebar-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .sidebar-img img {
            width: 100%;
            height: 120px;
            object-fit: cover;
        }
        .sidebar-contact {
            padding: 16px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .sidebar-contact p {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 10px;
            line-height: 20px;
        }
        .sidebar-contact .btn {
            width: 100%;
        }
        @media (max-width: 991.98px) {
            .sidebar-wrap {
                position: static;
                margin-top: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .sidebar-card {
                padding: 20px;
            }
        }

        /* ========== 合作流程 ========== */
        .workflow-section {
            padding: 72px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 36px;
        }
        .workflow-step {
            padding: 28px 20px;
            background: var(--color-surface);
            border: 1px solid var(--color-surface-border);
            border-radius: var(--radius-md);
            text-align: center;
            position: relative;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .workflow-step:hover {
            border-color: rgba(45, 225, 194, 0.3);
            box-shadow: var(--shadow-standard);
        }
        .workflow-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(45, 225, 194, 0.1);
            color: var(--color-secondary);
            font-weight: 600;
            font-size: 16px;
            margin-bottom: 16px;
            font-family: "Inter", "Roboto", sans-serif;
        }
        .workflow-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .workflow-step p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 22px;
            margin-bottom: 0;
        }
        @media (max-width: 991.98px) {
            .workflow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .workflow-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .workflow-section {
                padding: 52px 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 72px 0 56px;
        }
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--color-surface);
            border: 1px solid var(--color-surface-border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-button {
            background: transparent;
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            transition: color 0.25s;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(45, 225, 194, 0.05);
            color: var(--color-secondary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(45, 225, 194, 0.15);
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%238BA0B8' stroke-width='2'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
            transition: transform 0.3s;
        }
        .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%232DE1C2' stroke-width='2'%3E%3Cpath d='M4 10l4-4 4 4'/%3E%3C/svg%3E");
            transform: rotate(180deg);
        }
        .accordion-body {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 26px;
            padding: 4px 24px 20px;
        }
        @media (max-width: 575.98px) {
            .faq-section {
                padding: 48px 0 40px;
            }
            .accordion-button {
                font-size: 14px;
                padding: 16px 18px;
            }
            .accordion-body {
                padding: 0 18px 16px;
                font-size: 13px;
            }
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            padding: 24px 0 72px;
        }
        .cta-card {
            background: var(--gradient-primary);
            border-radius: 24px;
            padding: 48px 56px;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: var(--shadow-standard);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }
        .cta-card::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(45, 225, 194, 0.09) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-text h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .cta-text p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 28px;
            margin-bottom: 0;
            max-width: 520px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-shrink: 0;
        }
        .cta-actions .btn {
            padding: 12px 28px;
            font-size: 14px;
            white-space: nowrap;
        }
        @media (max-width: 991.98px) {
            .cta-card {
                flex-direction: column;
                padding: 40px 32px;
                text-align: center;
            }
            .cta-text p {
                margin: 0 auto;
            }
            .cta-actions {
                flex-wrap: wrap;
                justify-content: center;
            }
        }
        @media (max-width: 575.98px) {
            .cta-card {
                padding: 32px 20px;
                border-radius: 16px;
            }
            .cta-text h2 {
                font-size: 20px;
            }
            .cta-text p {
                font-size: 14px;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #08111C;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(45, 225, 194, 0.3), transparent);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand svg {
            width: 30px;
            height: 30px;
        }
        .footer-brand span {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 24px;
            max-width: 300px;
            margin-bottom: 0;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 18px;
            letter-spacing: 0.05em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: color 0.25s, padding-left 0.25s;
        }
        .footer-links a:hover {
            color: var(--color-secondary);
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 24px;
            margin-bottom: 14px;
        }
        .footer-contact .btn {
            padding: 8px 20px;
            font-size: 13px;
        }
        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom span {
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .icp-placeholder {
            color: var(--color-text-muted);
            font-size: 13px;
        }
        @media (max-width: 575.98px) {
            .site-footer {
                padding-top: 48px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-brand {
                justify-content: center;
            }
            .footer-desc {
                margin: 0 auto;
                text-align: center;
            }
        }

        /* ========== 焦点可见性 ========== */
        a:focus-visible,
        button:focus-visible,
        .accordion-button:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }