/* roulang page: index */
:root {
  --primary: hsl(268, 78%, 58%);
  --primary-2: hsl(326, 90%, 58%);
  --accent: hsl(185, 92%, 52%);
  --gold: hsl(40, 95%, 56%);
  --bg-deep: hsl(230, 28%, 12%);
  --bg-alt: hsl(230, 26%, 15%);
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-bg-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(185, 92%, 52%, 0.35);
  --text-main: rgba(255, 255, 255, 0.92);
  --text-sub: rgba(255, 255, 255, 0.66);
  --text-dim: rgba(255, 255, 255, 0.45);
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 42px rgba(0, 0, 0, 0.45);
  --container: 1200px;
  --section-space: 80px;
  --nav-height: 60px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-deep);
  color: var(--text-main);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

a:hover {
  color: hsl(185, 92%, 62%);
}

ul, ol {
  list-style: none;
}

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

input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  outline: none;
}

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

/* 按钮体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition: var(--transition);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  box-shadow: 0 6px 24px rgba(168, 85, 247, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, hsl(268, 78%, 65%) 0%, hsl(326, 90%, 65%) 100%);
  box-shadow: 0 8px 32px rgba(168, 85, 247, 0.5);
  transform: translateY(-2px);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(2px);
  box-shadow: 0 2px 12px rgba(168, 85, 247, 0.3);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.4);
  color: #fff;
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(2px);
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

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

.btn-block {
  width: 100%;
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(168, 85, 247, 0.15);
  color: hsl(268, 78%, 78%);
  border: 1px solid rgba(168, 85, 247, 0.25);
  letter-spacing: 0.02em;
}

.tag-gold {
  background: rgba(235, 180, 40, 0.12);
  color: var(--gold);
  border-color: rgba(235, 180, 40, 0.25);
}

.tag-cyan {
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent);
  border-color: rgba(34, 211, 238, 0.25);
}

/* 数据徽章 */
.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(236, 72, 153, 0.15));
  border: 1px solid rgba(168, 85, 247, 0.3);
  backdrop-filter: blur(12px);
  white-space: nowrap;
}

.badge-item .badge-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(168, 85, 247, 0.25);
  color: var(--accent);
  font-size: 15px;
}

.badge-item .badge-num {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 18px rgba(168, 85, 247, 0.5);
  line-height: 1.1;
}

.badge-item .badge-label {
  font-size: 12px;
  color: var(--text-sub);
  display: block;
  line-height: 1.3;
}

/* 悬浮胶囊导航 */
.header {
  position: fixed;
  top: 12px;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: center;
  padding: 0 20px;
  pointer-events: none;
}

.nav-bar {
  width: 100%;
  max-width: 920px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(20, 22, 35, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 8px 12px 8px 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  pointer-events: auto;
  transition: var(--transition);
}

.nav-logo {
  font-size: 20px;
  font-weight: 800;
  background: linear-gradient(135deg, hsl(268, 78%, 75%), hsl(326, 90%, 75%));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-logo:hover {
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 20px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(168, 85, 247, 0.2);
}

.nav-links a.active {
  color: #fff;
  background: rgba(168, 85, 247, 0.28);
  box-shadow: inset 0 0 0 1px rgba(168, 85, 247, 0.4);
}

.nav-cta {
  margin-left: 8px;
  flex-shrink: 0;
}

.nav-cta .btn {
  padding: 10px 24px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 20px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: var(--transition);
}

.nav-toggle:hover {
  background: rgba(168, 85, 247, 0.25);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(12, 14, 24, 0.98);
  z-index: 999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
  transition: opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-sub);
  padding: 12px 32px;
  border-radius: 999px;
  text-decoration: none;
  transition: var(--transition);
}

.mobile-menu a:hover {
  color: #fff;
  background: rgba(168, 85, 247, 0.2);
}

.mobile-menu a.active {
  color: #fff;
  background: rgba(168, 85, 247, 0.3);
}

.mobile-menu-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: var(--transition);
}

.mobile-menu-close:hover {
  background: rgba(236, 72, 153, 0.3);
}

/* Hero */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  background: var(--bg-deep);
  overflow: hidden;
  padding-top: 100px;
  padding-bottom: 60px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(20, 22, 42, 0.9) 0%, rgba(20, 22, 42, 0.6) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.3) 0%, transparent 70%);
  filter: blur(60px);
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  padding-right: 20px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin-bottom: 20px;
  color: #fff;
}

.hero h1 .grad-text {
  background: linear-gradient(135deg, var(--primary-2), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-info {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-dim);
}

.hero-avatar {
  display: flex;
  align-items: center;
}

.hero-avatar img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(168, 85, 247, 0.5);
  margin-left: -8px;
}

.hero-avatar img:first-child {
  margin-left: 0;
}

/* Hero 右侧视觉 */
.hero-visual {
  position: relative;
  min-height: 420px;
}

.hero-visual .hero-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-visual .hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(168, 85, 247, 0.2) 0%, transparent 60%);
}

.float-badge {
  position: absolute;
  z-index: 2;
  animation: floatY 4s ease-in-out infinite;
}

.float-badge.badge-1 {
  top: -24px;
  right: -12px;
  animation-delay: 0s;
}

.float-badge.badge-2 {
  bottom: 30px;
  left: -30px;
  animation-delay: 1s;
}

@keyframes floatY {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* 指标看板 */
.metrics-section {
  position: relative;
  z-index: 2;
  margin-top: -40px;
  padding-bottom: 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.metric-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.metric-card:hover {
  border-color: rgba(34, 211, 238, 0.35);
  background: var(--card-bg-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.metric-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.25), rgba(236, 72, 153, 0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  flex-shrink: 0;
}

.metric-info .metric-num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.metric-info .metric-label {
  font-size: 13px;
  color: var(--text-sub);
}

/* 服务矩阵 */
.services-section {
  padding: var(--section-space) 0;
  background: var(--bg-alt);
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 56px;
}

.section-header .section-tag {
  margin-bottom: 24px;
}

.section-header h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(180px, auto);
  gap: 24px;
}

.bento-card {
  grid-column: span 4;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
}

.bento-card:hover {
  background: var(--card-bg-hover);
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.bento-lg {
  grid-column: span 5;
  min-height: 260px;
  position: relative;
}

.bento-lg .bento-bg {
  position: absolute;
  inset: 0;
  background-size: cover !important;
  background-position: center !important;
  opacity: 0.45;
  z-index: 0;
  transition: all 0.4s ease;
}

.bento-lg:hover .bento-bg {
  opacity: 0.6;
  transform: scale(1.04);
}

.bento-lg .bento-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
}

.bento-card .bento-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(168, 85, 247, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  margin-bottom: 16px;
  transition: var(--transition);
}

.bento-card:hover .bento-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 4px 16px rgba(168, 85, 247, 0.4);
}

.bento-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.bento-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* 结果对比 */
.compare-section {
  padding: var(--section-space) 0;
  position: relative;
}

.compare-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.compare-col {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  transition: var(--transition);
}

.compare-col:hover {
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: var(--shadow-hover);
}

.compare-col h3 {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.compare-col.old-mode h3 {
  color: var(--text-sub);
}

.compare-col.j9-mode {
  border-color: rgba(168, 85, 247, 0.3);
  background: linear-gradient(160deg, rgba(168, 85, 247, 0.1), rgba(236, 72, 153, 0.06));
}

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

.compare-row {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.compare-row:last-child {
  border-bottom: none;
}

.compare-row .compare-dim {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
}

.compare-row .compare-val {
  font-size: 14px;
  color: var(--text-main);
}

.compare-row .compare-val strong {
  color: hsl(185, 92%, 60%);
  font-weight: 700;
}

.j9-mode .compare-row .compare-val {
  color: #fff;
}

.compare-vs {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  color: #fff;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.5);
  z-index: 2;
  border: 3px solid var(--bg-deep);
}

/* 最新动态 */
.news-section {
  padding: var(--section-space) 0;
  background: var(--bg-alt);
}

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

.news-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  border-color: rgba(168, 85, 247, 0.35);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.news-thumb {
  position: relative;
  overflow: hidden;
  min-height: 180px;
}

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

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

.news-thumb .tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(20, 22, 35, 0.8);
  backdrop-filter: blur(8px);
}

.news-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

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

.news-body h3 a {
  color: #fff;
  text-decoration: none;
}

.news-body h3 a:hover {
  color: var(--accent);
}

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

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dim);
}

.news-meta time {
  font-variant-numeric: tabular-nums;
}

.news-meta .read-more {
  margin-left: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.news-meta .read-more:hover {
  color: hsl(185, 92%, 65%);
}

.news-empty {
  padding: 80px 40px;
  text-align: center;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-sub);
}

.news-empty .empty-icon {
  font-size: 40px;
  margin-bottom: 16px;
  color: var(--text-dim);
}

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

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(168, 85, 247, 0.25);
}

.faq-item.active {
  background: rgba(168, 85, 247, 0.06);
  border-color: rgba(168, 85, 247, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
}

.faq-q-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(168, 85, 247, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  color: hsl(268, 78%, 75%);
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.active .faq-q-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
}

.faq-question .faq-q-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  flex: 1;
}

.faq-q-toggle {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-sub);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-q-toggle {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px 72px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* 转化表单 */
.contact-section {
  padding: var(--section-space) 0;
  position: relative;
  background: var(--bg-alt);
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, transparent 70%);
  filter: blur(50px);
  z-index: 0;
}

.contact-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.2) 0%, transparent 70%);
  filter: blur(50px);
  z-index: 0;
}

.contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact-info h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.contact-info p {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 32px;
  line-height: 1.8;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-list-item .contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(168, 85, 247, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-list-item .contact-text h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 2px;
}

.contact-list-item .contact-text p {
  font-size: 13px;
  color: var(--text-dim);
  margin: 0;
}

.contact-form-wrap {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: 48px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  color: #fff;
  transition: var(--transition);
}

.form-group textarea {
  height: 120px;
  resize: vertical;
  line-height: 1.6;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.2);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23ffffff' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L0 2h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.form-group select option {
  background: var(--bg-deep);
  color: #fff;
}

.form-status {
  font-size: 13px;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 10px;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(34, 197, 94, 0.15);
  color: hsl(142, 71%, 45%);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: hsl(0, 84%, 60%);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* 页脚 */
.footer {
  background: hsl(232, 28%, 10%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 24px;
}

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

.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, hsl(268, 78%, 75%), hsl(326, 90%, 75%));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  display: inline-block;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 10px;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

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

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

/* 响应式 */
@media (max-width: 1199px) {
  .hero .container {
    gap: 40px;
  }

  .hero-visual {
    min-height: 360px;
  }

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

@media (max-width: 991px) {
  :root {
    --section-space: 60px;
  }

  .nav-links {
    display: none;
  }

  .nav-cta {
    margin-left: auto;
  }

  .nav-toggle {
    display: flex;
    margin-left: 8px;
  }

  .mobile-menu.open {
    display: flex;
  }

  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-content {
    padding-right: 0;
    text-align: center;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-info {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .bento-card,
  .bento-lg {
    grid-column: span 6;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .header {
    top: 10px;
    padding: 0 12px;
  }

  .nav-bar {
    padding: 6px 10px 6px 16px;
  }

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

  .nav-cta .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding-top: 90px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

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

  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .metric-card {
    padding: 18px 20px;
  }

  .metric-info .metric-num {
    font-size: 22px;
  }

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

  .bento-card,
  .bento-lg {
    grid-column: span 1;
    min-height: auto;
  }

  .bento-lg {
    min-height: 220px;
  }

  .compare-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .compare-vs {
    top: auto;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
  }

  .compare-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 0;
  }

  .news-card {
    grid-template-columns: 1fr;
  }

  .news-thumb {
    min-height: 140px;
  }

  .news-body {
    padding: 20px;
  }

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

  .news-meta .read-more {
    margin-left: 0;
    width: 100%;
    margin-top: 8px;
  }

  .faq-question {
    padding: 16px;
    gap: 12px;
  }

  .faq-q-title {
    font-size: 15px;
  }

  .faq-item.active .faq-answer {
    padding: 0 16px 16px 48px;
  }

  .contact-form-wrap {
    padding: 24px;
  }

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

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

@media (max-width: 575px) {
  .section-header {
    margin-bottom: 36px;
  }

  .metrics-section {
    margin-top: -20px;
  }

  .compare-col {
    padding: 24px;
  }

  .compare-row {
    gap: 2px;
  }

  .news-thumb {
    min-height: 180px;
  }

  .news-meta {
    gap: 10px;
  }

  .badge-item {
    padding: 10px 14px;
  }

  .badge-item .badge-num {
    font-size: 18px;
  }

  .badge-item .badge-icon {
    width: 26px;
    height: 26px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: category1 */
:root {
            --primary-h: 268;
            --primary-s: 78%;
            --primary-l: 58%;
            --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
            --primary-light: hsl(var(--primary-h), calc(var(--primary-s) - 8%), calc(var(--primary-l) + 12%));
            --secondary: hsl(326, 90%, 58%);
            --accent: hsl(40, 95%, 56%);
            --cyan: hsl(185, 92%, 52%);
            --bg-deep: hsl(230, 28%, 9%);
            --bg-main: hsl(230, 28%, 12%);
            --bg-alt: hsl(230, 26%, 15%);
            --card-bg: rgba(255, 255, 255, 0.05);
            --card-border: rgba(255, 255, 255, 0.08);
            --card-border-hover: rgba(185, 92%, 52%, 0.35);
            --text-main: rgba(255, 255, 255, 0.92);
            --text-sub: rgba(255, 255, 255, 0.66);
            --text-muted: rgba(255, 255, 255, 0.45);
            --gradient-main: linear-gradient(135deg, hsl(268, 78%, 58%) 0%, hsl(326, 90%, 58%) 100%);
            --gradient-hover: linear-gradient(135deg, hsl(268, 78%, 63%) 0%, hsl(326, 90%, 63%) 100%);
            --radius-lg: 22px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 42px rgba(0, 0, 0, 0.45);
            --container-max: 1200px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-main);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--cyan);
            text-decoration: underline;
        }

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

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

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

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-header h2 {
            font-size: clamp(24px, 3vw, 34px);
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-sub);
            font-size: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.2;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            outline: none;
            text-align: center;
        }

        .btn-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 20px rgba(168, 85, 247, 0.3);
        }

        .btn-primary:hover {
            background: var(--gradient-hover);
            box-shadow: 0 8px 28px rgba(168, 85, 247, 0.45);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }

        .btn-primary:active {
            transform: translateY(2px);
            box-shadow: 0 2px 12px rgba(168, 85, 247, 0.3);
        }

        .btn-primary:focus-visible {
            box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.35);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(168, 85, 247, 0.15);
            border-color: rgba(168, 85, 247, 0.4);
            color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
        }

        .btn-secondary:focus-visible {
            box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.25);
        }

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

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        /* Header */
        .header {
            position: fixed;
            top: 12px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            padding: 0 16px;
            pointer-events: none;
        }

        .nav-bar {
            pointer-events: auto;
            width: 100%;
            max-width: calc(var(--container-max) + 32px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            background: rgba(18, 20, 32, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-pill);
            padding: 12px 16px 12px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }

        .nav-logo:hover {
            -webkit-text-fill-color: transparent;
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-links a {
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            color: var(--text-sub);
            font-weight: 500;
            font-size: 14px;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(168, 85, 247, 0.2);
            text-decoration: none;
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(168, 85, 247, 0.25);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(168, 85, 247, 0.3);
        }

        .nav-cta {
            display: flex;
            align-items: center;
        }

        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: #fff;
            transition: background 0.25s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.15);
        }

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

        /* Page Hero */
        .page-hero {
            background: var(--bg-deep);
            border-bottom: 1px solid var(--card-border);
            position: relative;
            overflow: hidden;
            padding: 160px 0 80px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            top: -200px;
            right: -100px;
            background: radial-gradient(circle, rgba(168, 85, 247, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            bottom: -150px;
            left: -100px;
            background: radial-gradient(circle, rgba(236, 72, 153, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .page-hero-content {
            max-width: 800px;
        }

        .page-hero-content h1 {
            font-size: clamp(32px, 5vw, 48px);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }

        .page-hero-content h1 span {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-hero-content p {
            font-size: 17px;
            color: var(--text-sub);
            margin-bottom: 28px;
            max-width: 640px;
            line-height: 1.8;
        }

        .page-hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .page-hero-meta {
            display: flex;
            gap: 20px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .page-hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-size: 13px;
        }

        .page-hero-meta .meta-item svg {
            width: 18px;
            height: 18px;
            stroke: var(--cyan);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg-main);
            padding: 100px 0 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 16px 0;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s;
        }

        .breadcrumb a:hover {
            color: var(--cyan);
            text-decoration: none;
        }

        .breadcrumb .sep {
            color: var(--text-muted);
            margin: 0 4px;
        }

        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }

        /* Data Panel Section - 左右布局 */
        .panel-overview {
            padding: 80px 0;
            background: var(--bg-main);
        }

        .panel-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .panel-split-left {
            position: relative;
        }

        .panel-split-left .image-frame {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .panel-split-left .image-frame::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.3) 0%, transparent 50%);
            border-radius: var(--radius-lg);
        }

        .panel-split-left .image-frame img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .float-badge {
            position: absolute;
            background: rgba(20, 22, 35, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-card);
            z-index: 3;
        }

        .float-badge .badge-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }

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

        .float-badge .badge-text {
            display: flex;
            flex-direction: column;
        }

        .float-badge .badge-value {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .float-badge .badge-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .float-badge.badge-1 {
            top: 20px;
            left: -20px;
        }

        .float-badge.badge-2 {
            bottom: 60px;
            right: -16px;
        }

        .panel-split-right h2 {
            font-size: clamp(24px, 3vw, 32px);
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 20px;
            color: #fff;
        }

        .panel-split-right h2 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .panel-split-right p {
            color: var(--text-sub);
            margin-bottom: 24px;
            font-size: 15px;
            line-height: 1.8;
        }

        .panel-features-list {
            list-style: none;
            display: grid;
            gap: 14px;
            margin: 0;
        }

        .panel-features-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all 0.3s ease;
        }

        .panel-features-list li:hover {
            border-color: rgba(168, 85, 247, 0.25);
            background: rgba(255, 255, 255, 0.07);
        }

        .panel-features-list .feat-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(168, 85, 247, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--primary-light);
        }

        .panel-features-list .feat-icon svg {
            width: 16px;
            height: 16px;
        }

        .panel-features-list .feat-text {
            flex: 1;
        }

        .panel-features-list .feat-text strong {
            display: block;
            font-size: 15px;
            color: #fff;
            margin-bottom: 2px;
        }

        .panel-features-list .feat-text span {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.5;
        }

        /* Metrics Band */
        .metrics-band {
            background: var(--bg-alt);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
            padding: 60px 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: all 0.3s ease;
        }

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

        .metric-card .metric-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 14px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
        }

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

        .metric-card .metric-value {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            letter-spacing: 1px;
        }

        .metric-card .metric-label {
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 8px;
        }

        .metric-card .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            margin-top: 8px;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            background: rgba(34, 197, 94, 0.15);
            color: #4ade80;
            font-weight: 600;
        }

        .metric-card .metric-trend.down {
            background: rgba(245, 158, 11, 0.15);
            color: var(--accent);
        }

        /* Data Modules */
        .module-section {
            padding: 80px 0;
        }

        .module-section.bg-alt {
            background: var(--bg-alt);
        }

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

        .module-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .module-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-main);
            opacity: 0;
            transition: opacity 0.3s;
        }

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

        .module-card:hover::before {
            opacity: 1;
        }

        .module-card .module-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(168, 85, 247, 0.2) 0%, rgba(236, 72, 153, 0.15) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-light);
            border: 1px solid rgba(168, 85, 247, 0.2);
        }

        .module-card .module-icon svg {
            width: 28px;
            height: 28px;
        }

        .module-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }

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

        .module-card .module-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .module-tags .tag {
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            background: rgba(168, 85, 247, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(168, 85, 247, 0.15);
            font-weight: 500;
        }

        /* Use Cases */
        .cases-section {
            background: var(--bg-main);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all 0.3s ease;
        }

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

        .case-card .case-num {
            font-size: 32px;
            font-weight: 800;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }

        .case-card .case-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .case-card .case-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* Workflow */
        .workflow-section {
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }

        .workflow-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            top: -200px;
            left: -100px;
            background: radial-gradient(circle, rgba(168, 85, 247, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .workflow-step {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
        }

        .workflow-step:hover {
            border-color: rgba(168, 85, 247, 0.3);
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-4px);
        }

        .workflow-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 24px rgba(168, 85, 247, 0.3);
        }

        .workflow-step .step-icon {
            margin-bottom: 12px;
            color: var(--primary-light);
        }

        .workflow-step .step-icon svg {
            width: 28px;
            height: 28px;
        }

        .workflow-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .workflow-step p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-main);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(168, 85, 247, 0.3);
            background: rgba(168, 85, 247, 0.06);
        }

        .faq-question {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            user-select: none;
        }

        .faq-question .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 800;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .faq-question .q-text {
            flex: 1;
            font-weight: 600;
            color: var(--text-main);
            font-size: 15px;
        }

        .faq-question .q-toggle {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            transition: transform 0.3s;
            flex-shrink: 0;
        }

        .faq-item.active .q-toggle {
            transform: rotate(45deg);
            color: var(--primary-light);
        }

        .faq-question .q-toggle svg {
            width: 20px;
            height: 20px;
        }

        .faq-answer {
            padding: 0 20px 18px 62px;
            display: none;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: fadeUp 0.3s ease;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* CTA */
        .cta-section {
            background: var(--bg-alt);
            border-top: 1px solid var(--card-border);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 400px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-wrapper {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-wrapper h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-wrapper p {
            color: var(--text-sub);
            font-size: 16px;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .footer {
            background: hsl(230, 28%, 8%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 0;
        }

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

        .footer-brand {
            max-width: 360px;
        }

        .footer-logo {
            display: block;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 16px;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: var(--text-sub);
            font-size: 14px;
            padding: 4px 0;
            transition: all 0.2s;
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

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

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

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 12, 22, 0.97);
            z-index: 999;
            padding: 80px 24px 24px;
            flex-direction: column;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .mobile-menu.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 16px;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: background 0.2s;
            text-decoration: none;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .mobile-menu a.active {
            color: #fff;
            background: rgba(168, 85, 247, 0.2);
        }

        .mobile-menu .menu-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: #fff;
        }

        .mobile-menu .menu-cta {
            margin-top: 16px;
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .panel-split {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .panel-split-left .image-frame img {
                height: 340px;
            }

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

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

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

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-section-mobile) 0;
            }

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

            .nav-links,
            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-bar {
                padding: 10px 12px 10px 18px;
            }

            .page-hero {
                padding: 130px 0 56px;
            }

            .page-hero-content h1 {
                font-size: 30px;
            }

            .page-hero-content p {
                font-size: 15px;
            }

            .breadcrumb-wrap {
                padding: 84px 0 0;
            }

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

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

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

            .float-badge.badge-1 {
                left: 8px;
            }

            .float-badge.badge-2 {
                right: 8px;
            }

            .panel-split-left .image-frame img {
                height: 260px;
            }
        }

        @media (max-width: 576px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }

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

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

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

            .page-hero-actions {
                flex-direction: column;
                width: 100%;
            }

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

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

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

            .case-card {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: hsl(268, 78%, 58%);
            --color-primary-light: hsl(268, 78%, 70%);
            --color-secondary: hsl(185, 92%, 52%);
            --color-accent: hsl(40, 95%, 56%);
            --color-bg: hsl(230, 28%, 12%);
            --color-bg-alt: hsl(230, 26%, 15%);
            --color-card: rgba(255, 255, 255, 0.05);
            --color-card-hover: rgba(255, 255, 255, 0.09);
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-hover: rgba(185, 92%, 52%, 0.35);
            --color-text: rgba(255, 255, 255, 0.92);
            --color-text-secondary: rgba(255, 255, 255, 0.66);
            --color-text-muted: rgba(255, 255, 255, 0.45);
            --gradient-primary: linear-gradient(135deg, hsl(268, 78%, 58%), hsl(326, 90%, 58%));
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 42px rgba(0, 0, 0, 0.45);
            --container-max: 1200px;
            --container-padding: 24px;
            --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: var(--color-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--color-primary-light);
        }
        ul,
        ol {
            padding-left: 1.4rem;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding);
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            line-height: 1.2;
            border: none;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, opacity 0.2s ease;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--gradient-primary);
            color: #fff !important;
            box-shadow: 0 6px 22px rgba(160, 60, 214, 0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 8px 30px rgba(160, 60, 214, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 4px 16px rgba(160, 60, 214, 0.3);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-text) !important;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 3px;
        }
        .btn-block {
            width: 100%;
        }

        /* 悬浮胶囊导航 */
        .header {
            position: fixed;
            top: 14px;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 var(--container-padding);
            pointer-events: none;
        }
        .nav-bar {
            max-width: var(--container-max);
            margin: 0 auto;
            background: rgba(20, 22, 35, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-pill);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 10px 18px 10px 24px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
            pointer-events: auto;
            flex-wrap: nowrap;
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            flex-shrink: 0;
            white-space: nowrap;
        }
        .nav-logo:hover {
            opacity: 0.85;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            overflow: hidden;
        }
        .nav-links a {
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            font-size: 14px;
            transition: background 0.2s ease, color 0.2s ease;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--color-text);
            background: rgba(160, 60, 214, 0.2);
        }
        .nav-links a.active {
            color: #fff;
            background: rgba(160, 60, 214, 0.28);
            box-shadow: inset 0 0 0 1px rgba(160, 60, 214, 0.35);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 10px 22px;
            font-size: 14px;
            border-radius: var(--radius-pill);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            flex-shrink: 0;
            transition: background 0.2s ease;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.14);
        }

        /* 文章 Hero */
        .article-hero {
            padding: 148px 0 56px;
            background:
                linear-gradient(rgba(21, 22, 36, 0.82), rgba(21, 22, 36, 0.94)),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .article-hero .container {
            max-width: 860px;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--color-secondary);
        }
        .breadcrumb .current {
            color: var(--color-text-muted);
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .breadcrumb-sep {
            color: rgba(255, 255, 255, 0.35);
        }
        .article-hero h1 {
            font-size: clamp(28px, 4vw, 42px);
            line-height: 1.3;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.2px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            font-size: 14px;
            color: var(--color-text-muted);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-icon {
            width: 16px;
            height: 16px;
            stroke: var(--color-text-muted);
            fill: none;
            stroke-width: 1.8;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            background: rgba(160, 60, 214, 0.18);
            color: #d8b4fe;
            border: 1px solid rgba(160, 60, 214, 0.28);
        }

        /* 正文区 */
        .article-main {
            padding: 64px 0 56px;
        }
        .article-main .container {
            max-width: 860px;
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.85);
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            margin: 40px 0 18px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            border-radius: 0 6px 6px 0;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.92);
            margin: 32px 0 14px;
        }
        .article-content p {
            margin-bottom: 22px;
            color: rgba(255, 255, 255, 0.78);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }
        .article-content blockquote {
            margin: 28px 0;
            padding: 18px 24px;
            background: rgba(160, 60, 214, 0.1);
            border-left: 3px solid var(--color-primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: rgba(255, 255, 255, 0.8);
            font-style: normal;
        }
        .article-content blockquote p {
            margin-bottom: 0;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 22px;
            padding-left: 1.5rem;
            color: rgba(255, 255, 255, 0.78);
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content a {
            color: var(--color-secondary);
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease;
        }
        .article-content a:hover {
            border-color: var(--color-secondary);
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.1);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }

        /* 空状态 */
        .article-empty {
            text-align: center;
            padding: 80px 24px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .article-empty h2 {
            font-size: 28px;
            color: #fff;
            margin-bottom: 14px;
        }
        .article-empty p {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        /* 相关推荐 */
        .related-section {
            padding: 60px 0 72px;
            background: var(--color-bg-alt);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 16px;
        }
        .related-header h2 {
            font-size: clamp(22px, 2.6vw, 30px);
            font-weight: 800;
            color: #fff;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: block;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            text-decoration: none;
            color: var(--color-text);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(185, 92%, 52%, 0.35);
            color: var(--color-text);
        }
        .related-cover {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--color-bg-alt);
            border-radius: 0;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.3s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.04);
        }
        .related-info {
            padding: 20px 22px 22px;
        }
        .related-info h3 {
            font-size: 17px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.92);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-info p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }
        .related-info .related-date {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* CTA 区 */
        .cta-section {
            padding: 72px 0;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(160, 60, 214, 0.22), transparent 45%),
                radial-gradient(ellipse at 80% 80%, rgba(236, 72, 153, 0.16), transparent 50%);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .cta-card {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 48px 40px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .cta-card h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-card p {
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            font-size: 15px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 页脚 */
        .footer {
            background: hsl(232, 28%, 10%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-muted);
            max-width: 320px;
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            padding: 6px 0;
            color: var(--color-text-muted);
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col a:hover {
            color: var(--color-secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .footer-bottom a {
            color: var(--color-text-muted);
        }
        .footer-bottom a:hover {
            color: var(--color-secondary);
        }

        /* 移动端导航抽屉 */
        .mobile-menu-mask {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 280px;
            height: 100%;
            background: hsl(230, 26%, 14%);
            z-index: 1001;
            padding: 80px 28px 28px;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-menu.open {
            transform: translateX(0);
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            color: var(--color-text-secondary);
            font-size: 16px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease, color 0.2s ease;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(160, 60, 214, 0.2);
            color: #fff;
        }
        .mobile-menu-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .nav-links {
                gap: 0;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .nav-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            :root {
                --container-padding: 16px;
            }
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .header {
                top: 10px;
                padding: 0 12px;
            }
            .nav-bar {
                padding: 8px 10px 8px 16px;
                border-radius: 18px;
            }
            .mobile-menu {
                display: block;
            }
            .mobile-menu-mask.show {
                display: block;
                opacity: 1;
            }
            .article-hero {
                padding: 120px 0 40px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-main {
                padding: 40px 0 36px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.75;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
        }
        @media (max-width: 576px) {
            .article-meta {
                gap: 8px 14px;
            }
            .nav-logo {
                font-size: 17px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .related-cover {
                height: 160px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: hsl(268, 78%, 58%);
            --primary-2: hsl(326, 90%, 58%);
            --accent: hsl(185, 92%, 52%);
            --gold: hsl(40, 95%, 56%);
            --bg: hsl(230, 28%, 12%);
            --bg-alt: hsl(230, 26%, 15%);
            --card-bg: rgba(255, 255, 255, 0.05);
            --border: rgba(255, 255, 255, 0.08);
            --text: rgba(255, 255, 255, 0.92);
            --text-2: rgba(255, 255, 255, 0.66);
            --text-3: rgba(255, 255, 255, 0.45);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 42px rgba(0, 0, 0, 0.45);
            --space: 80px;
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 15px;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary-2);
        }

        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-md);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            padding: 14px 28px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.28s ease;
            text-align: center;
            line-height: 1.3;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            box-shadow: 0 6px 20px rgba(139, 90, 255, 0.35);
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            box-shadow: 0 8px 28px rgba(139, 90, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(2px);
            box-shadow: 0 3px 12px rgba(139, 90, 255, 0.3);
            filter: brightness(0.96);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.18);
            color: var(--text);
        }

        .btn-outline:hover {
            background: rgba(139, 90, 255, 0.15);
            border-color: rgba(139, 90, 255, 0.4);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(43, 210, 230, 0.25);
        }

        /* Header nav */
        .header {
            position: fixed;
            top: 14px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 100;
            width: min(1200px, calc(100% - 32px));
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(20, 22, 35, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 10px 18px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
        }

        .nav-logo {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.82));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            padding: 8px 18px;
            border-radius: 999px;
            color: var(--text-2);
            font-weight: 500;
            font-size: 14.5px;
            transition: all 0.25s ease;
        }

        .nav-links a:hover {
            background: rgba(139, 90, 255, 0.2);
            color: #fff;
        }

        .nav-links a.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(139, 90, 255, 0.4);
        }

        .nav-cta {
            margin-left: 8px;
        }

        .nav-cta .btn {
            padding: 10px 22px;
            font-size: 14px;
            border-radius: 999px;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text);
            transition: all 0.25s ease;
        }

        .nav-toggle:hover {
            background: rgba(139, 90, 255, 0.2);
            border-color: rgba(139, 90, 255, 0.4);
        }

        /* Page hero */
        .page-hero {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 180px 0 90px;
            text-align: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 28, 0.85) 0%, rgba(15, 17, 28, 0.72) 50%, var(--bg) 100%);
        }

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

        .page-hero h1 {
            font-size: clamp(34px, 5vw, 54px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
        }

        .page-hero h1 span {
            background: linear-gradient(135deg, var(--accent), var(--primary-2));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-hero .lead {
            font-size: 17px;
            color: var(--text-2);
            max-width: 720px;
            margin: 0 auto 34px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 860px;
            margin: 0 auto;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            transition: all 0.3s ease;
            backdrop-filter: blur(6px);
        }

        .hero-stat:hover {
            border-color: rgba(43, 210, 230, 0.35);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .hero-stat .num {
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            font-variant-numeric: tabular-nums;
        }

        .hero-stat .label {
            font-size: 13px;
            color: var(--text-2);
            margin-top: 4px;
        }

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

        .section-alt {
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-2);
            font-size: 15px;
        }

        /* Service cards */
        .services-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            position: relative;
            overflow: hidden;
            transition: all 0.32s ease;
        }

        .service-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(43, 210, 230, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .service-card.featured {
            background-size: cover;
            background-position: center;
            background-color: var(--bg-alt);
        }

        .service-card.featured::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 17, 28, 0.2) 0%, rgba(15, 17, 28, 0.92) 100%);
        }

        .service-card.featured .card-inner {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            height: 100%;
            min-height: 260px;
        }

        .service-card .icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(139, 90, 255, 0.25), rgba(236, 72, 153, 0.25));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .service-card p {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
        }

        .services-grid .service-card:nth-child(2) {
            grid-column: span 1;
        }

        .services-grid .service-card:nth-child(3) {
            grid-column: span 1;
        }

        .services-grid .service-card:nth-child(4) {
            grid-column: span 2;
        }

        /* Timeline */
        .timeline-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .timeline {
            position: relative;
            padding-left: 32px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--primary-2));
            border-radius: 999px;
            opacity: 0.6;
        }

        .timeline-item {
            position: relative;
            padding: 20px 0 20px 28px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 26px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            box-shadow: 0 0 0 5px rgba(43, 210, 230, 0.15);
            border: 2px solid var(--bg);
        }

        .timeline-item .step-label {
            display: inline-flex;
            align-items: center;
            background: rgba(139, 90, 255, 0.18);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .timeline-item h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .timeline-item p {
            color: var(--text-2);
            font-size: 14.5px;
            line-height: 1.75;
        }

        .timeline-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .timeline-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .timeline-media .media-badge {
            position: absolute;
            left: 20px;
            bottom: 20px;
            background: rgba(15, 17, 28, 0.82);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 14px 20px;
            font-size: 13px;
            color: var(--text-2);
        }

        .timeline-media .media-badge strong {
            color: var(--accent);
            font-size: 18px;
            display: block;
            font-variant-numeric: tabular-nums;
        }

        /* Scenarios */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .scenario-card:hover {
            border-color: rgba(139, 90, 255, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .scenario-card .s-icon {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(139, 90, 255, 0.22), rgba(236, 72, 153, 0.22));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: var(--accent);
        }

        .scenario-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .scenario-card p {
            font-size: 13.5px;
            color: var(--text-2);
            line-height: 1.7;
        }

        /* Support points */
        .support-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .support-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            transition: all 0.3s ease;
        }

        .support-item:hover {
            background: rgba(139, 90, 255, 0.08);
            border-color: rgba(139, 90, 255, 0.3);
        }

        .support-item .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            margin-bottom: 14px;
            box-shadow: 0 0 10px rgba(43, 210, 230, 0.6);
        }

        .support-item h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .support-item p {
            font-size: 13px;
            color: var(--text-2);
            line-height: 1.6;
        }

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

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item[open] {
            border-color: rgba(139, 90, 255, 0.35);
            background: rgba(139, 90, 255, 0.06);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15.5px;
            list-style: none;
            transition: color 0.2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-item summary .plus {
            margin-left: auto;
            font-size: 22px;
            line-height: 1;
            color: var(--text-2);
            transition: transform 0.3s ease, color 0.3s ease;
            font-weight: 300;
        }

        .faq-item[open] summary .plus {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-item .faq-body {
            padding: 0 24px 22px 66px;
            color: var(--text-2);
            font-size: 14.5px;
            line-height: 1.8;
        }

        /* Contact */
        .contact-section {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }

        .contact-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 20%, rgba(139, 90, 255, 0.22), transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(236, 72, 153, 0.18), transparent 50%),
                rgba(15, 17, 28, 0.88);
        }

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

        .contact-form {
            background: rgba(20, 22, 35, 0.75);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 40px;
            max-width: 720px;
            margin: 0 auto;
            box-shadow: var(--shadow-hover);
        }

        .contact-form .form-title {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 6px;
            text-align: center;
        }

        .contact-form .form-subtitle {
            text-align: center;
            color: var(--text-2);
            font-size: 14px;
            margin-bottom: 28px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-bottom: 18px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-2);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            height: 46px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-sm);
            padding: 0 16px;
            color: var(--text);
            transition: all 0.25s ease;
        }

        .form-group textarea {
            height: 110px;
            padding: 14px 16px;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(139, 90, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-3);
        }

        .contact-form .btn {
            width: 100%;
            margin-top: 10px;
        }

        .form-status {
            margin-top: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            text-align: center;
            display: none;
        }

        .form-status.success {
            display: block;
            background: rgba(34, 197, 94, 0.15);
            border: 1px solid rgba(34, 197, 94, 0.35);
            color: #86efac;
        }

        .form-status.error {
            display: block;
            background: rgba(239, 68, 68, 0.15);
            border: 1px solid rgba(239, 68, 68, 0.35);
            color: #fca5a5;
        }

        /* Footer */
        .footer {
            background: hsl(230, 30%, 9%);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 28px;
        }

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

        .footer-logo {
            display: inline-block;
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.8));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
        }

        .footer-col a {
            display: block;
            color: var(--text-2);
            font-size: 14px;
            padding: 5px 0;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            color: var(--text-3);
            font-size: 13px;
        }

        .footer-bottom a {
            color: var(--text-3);
        }

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

        /* Responsive */
        @media (max-width: 1200px) {
            .nav-links a {
                padding: 8px 12px;
                font-size: 13.5px;
            }

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

            .services-grid .service-card:nth-child(1) {
                grid-column: span 2;
            }

            .services-grid .service-card:nth-child(4) {
                grid-column: span 2;
            }

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

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

        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: 76px;
                left: 16px;
                right: 16px;
                background: rgba(20, 22, 35, 0.96);
                backdrop-filter: blur(20px);
                border-radius: 20px;
                border: 1px solid rgba(255, 255, 255, 0.1);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 8px;
                display: none;
                box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                text-align: center;
                padding: 14px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

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

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

            .timeline-media img {
                height: 320px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space: 48px;
            }

            .container {
                padding: 0 16px;
            }

            .page-hero {
                padding: 140px 0 64px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

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

            .services-grid .service-card:nth-child(1),
            .services-grid .service-card:nth-child(4) {
                grid-column: span 1;
            }

            .service-card.featured .card-inner {
                min-height: 200px;
            }

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

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

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

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

            .contact-form {
                padding: 28px 20px;
            }

            .form-row {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .hero-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .hero-stat {
                padding: 14px 10px;
            }

            .hero-stat .num {
                font-size: 22px;
            }

            .hero-stat .label {
                font-size: 12px;
            }

            .timeline-media img {
                height: 240px;
            }

            .timeline-media .media-badge {
                left: 12px;
                bottom: 12px;
                padding: 10px 14px;
                font-size: 12px;
            }

            .faq-item summary {
                padding: 16px 14px;
                font-size: 14px;
            }

            .faq-item .faq-body {
                padding: 0 14px 18px 50px;
                font-size: 13.5px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: hsl(268, 78%, 58%);
  --primary-2: hsl(326, 90%, 58%);
  --secondary: hsl(185, 92%, 52%);
  --accent: hsl(40, 95%, 56%);
  --bg: hsl(230, 28%, 12%);
  --bg-alt: hsl(230, 26%, 15%);
  --bg-deep: hsl(230, 30%, 9%);
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-bg-hover: rgba(255, 255, 255, 0.09);
  --text-main: rgba(255, 255, 255, 0.92);
  --text-sub: rgba(255, 255, 255, 0.66);
  --text-muted: rgba(255, 255, 255, 0.45);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(185, 242, 255, 0.35);
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 42px rgba(0, 0, 0, 0.45);
  --spacer: 80px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text-main); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: var(--spacer) 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
.section-head h2 span { background: linear-gradient(135deg, #c4b5fd, #f0abfc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.section-head p { font-size: 15px; color: var(--text-sub); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 28px; border-radius: var(--radius-sm); font-weight: 700; border: 0; cursor: pointer; transition: all 0.25s ease; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; box-shadow: 0 4px 18px rgba(168, 85, 247, 0.25); }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); box-shadow: 0 8px 26px rgba(168, 85, 247, 0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.18); color: #fff; }
.btn-ghost:hover { background: rgba(168, 85, 247, 0.15); border-color: rgba(255, 255, 255, 0.3); transform: translateY(-2px); }
.btn:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; }

.header { position: fixed; top: 12px; left: 0; right: 0; z-index: 1000; display: flex; justify-content: center; pointer-events: none; }
.nav-bar { pointer-events: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; width: calc(100% - 32px); max-width: 1120px; background: rgba(20, 22, 35, 0.82); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 8px 12px 8px 20px; border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 999px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35); }
.nav-logo { font-size: 18px; font-weight: 900; background: linear-gradient(135deg, #fff, #c4b5fd); -webkit-background-clip: text; background-clip: text; color: transparent; letter-spacing: 0.5px; white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { padding: 8px 14px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-sub); transition: all 0.2s ease; white-space: nowrap; }
.nav-links a:hover { color: #fff; background: rgba(168, 85, 247, 0.2); }
.nav-links a.active { color: #fff; background: linear-gradient(135deg, rgba(168, 85, 247, 0.3), rgba(232, 60, 160, 0.25)); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15); }
.nav-cta .btn { padding: 8px 18px; font-size: 14px; }
.nav-toggle { display: none; background: none; border: 0; color: #fff; cursor: pointer; border-radius: 8px; padding: 8px; }
.nav-toggle svg { display: block; }

.category-hero { position: relative; padding: 180px 0 80px; background: linear-gradient(135deg, rgba(15, 17, 32, 0.93) 0%, rgba(40, 25, 60, 0.88) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat; overflow: hidden; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--text-sub); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--secondary); }
.category-hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.2; font-weight: 900; letter-spacing: 1px; margin-bottom: 20px; background: linear-gradient(120deg, #fff 30%, #d8b4fe 70%, #f0abfc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-subtitle { font-size: 16px; line-height: 1.8; color: var(--text-sub); max-width: 700px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.hero-tag { font-size: 12px; padding: 6px 14px; border-radius: 999px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); color: var(--text-sub); }

.services-section { background: var(--bg); }
.masonry-grid { columns: 3; column-gap: 24px; }
.masonry-card { break-inside: avoid; margin-bottom: 24px; border-radius: var(--radius-lg); background: var(--card-bg); border: 1px solid var(--border); overflow: hidden; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; }
.masonry-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--border-hover); }
.masonry-card .card-media { aspect-ratio: 16 / 9; overflow: hidden; }
.masonry-card .card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.masonry-card:hover .card-media img { transform: scale(1.03); }
.masonry-card .card-body { padding: 22px; }
.masonry-card .card-tag { display: inline-flex; align-items: center; padding: 3px 12px; border-radius: 999px; background: rgba(168, 85, 247, 0.18); color: #d8b4fe; font-size: 12px; font-weight: 600; margin-bottom: 12px; }
.masonry-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.masonry-card p { font-size: 14px; color: var(--text-sub); line-height: 1.65; }
.masonry-card--large .card-media { aspect-ratio: 16 / 10; }

.metrics-section { background: var(--bg-alt); }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.metric-badge { display: flex; align-items: center; gap: 16px; padding: 20px; background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(232, 60, 160, 0.08)); border: 1px solid rgba(168, 85, 247, 0.25); border-radius: var(--radius-md); transition: all 0.3s ease; }
.metric-badge:hover { border-color: rgba(185, 242, 255, 0.35); transform: translateY(-3px); }
.metric-icon { width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; flex-shrink: 0; }
.metric-value { font-size: 24px; font-weight: 800; font-variant-numeric: tabular-nums; color: #fff; line-height: 1.2; }
.metric-label { font-size: 13px; color: var(--text-sub); }

.process-section { background: var(--bg); }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card { position: relative; padding: 28px 22px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); transition: all 0.3s ease; }
.step-card:hover { border-color: var(--border-hover); transform: translateY(-3px); box-shadow: var(--shadow-card); }
.step-num { width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; margin-bottom: 14px; font-size: 16px; }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--text-sub); line-height: 1.6; }

.track-section { background: var(--bg-alt); }
.track-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.track-item { display: flex; gap: 16px; align-items: flex-start; padding: 20px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); transition: all 0.3s ease; }
.track-item:hover { background: var(--card-bg-hover); border-color: var(--border-hover); transform: translateY(-2px); }
.track-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px; display: flex; align-items: center; justify-content: center; background: rgba(168, 85, 247, 0.15); color: #d8b4fe; }
.track-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.track-item p { font-size: 13px; color: var(--text-sub); line-height: 1.5; }
.track-badge { margin-left: auto; flex-shrink: 0; font-size: 12px; padding: 3px 12px; border-radius: 999px; background: rgba(185, 242, 255, 0.1); color: var(--secondary); white-space: nowrap; align-self: center; }

.faq-section { background: var(--bg); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border-radius: var(--radius-md); background: var(--card-bg); border: 1px solid var(--border); margin-bottom: 14px; overflow: hidden; transition: border-color 0.3s ease, background 0.3s ease; }
.faq-item[open] { border-color: rgba(168, 85, 247, 0.35); background: rgba(168, 85, 247, 0.06); }
.faq-item summary { display: flex; align-items: center; gap: 14px; padding: 18px 20px; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { width: 26px; height: 26px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-2)); display: flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; font-weight: 700; flex-shrink: 0; }
.faq-item summary h3 { font-size: 15px; font-weight: 600; flex: 1; line-height: 1.4; }
.faq-arrow { flex-shrink: 0; width: 24px; height: 24px; text-align: center; color: var(--text-muted); font-size: 22px; line-height: 24px; transition: transform 0.3s ease; }
.faq-item[open] .faq-arrow { transform: rotate(45deg); }
.faq-answer { padding: 0 20px 18px 60px; font-size: 14px; color: var(--text-sub); line-height: 1.75; }

.contact-section { position: relative; background: linear-gradient(135deg, rgba(15, 17, 32, 0.95), rgba(40, 20, 55, 0.92)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.contact-info p { color: var(--text-sub); margin-bottom: 20px; font-size: 15px; }
.contact-info ul { margin-top: 16px; }
.contact-info li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-sub); padding: 6px 0; }
.contact-info li svg { color: var(--secondary); flex-shrink: 0; }
.contact-form { background: rgba(255, 255, 255, 0.06); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; backdrop-filter: blur(12px); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--text-sub); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 14px; border-radius: var(--radius-sm); border: 1px solid rgba(255, 255, 255, 0.18); background: rgba(255, 255, 255, 0.06); color: #fff; transition: border-color 0.2s, box-shadow 0.2s; }
.form-group input::placeholder, .form-group textarea::placeholder { color: rgba(255, 255, 255, 0.3); }
.form-group select option { background: var(--bg-alt); color: #fff; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.2); }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-submit { width: 100%; margin-top: 4px; }

.footer { background: var(--bg-deep); border-top: 1px solid rgba(255, 255, 255, 0.06); padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { font-size: 18px; font-weight: 900; background: linear-gradient(135deg, #fff, #c4b5fd); -webkit-background-clip: text; background-clip: text; color: transparent; }
.footer-brand p { font-size: 14px; color: var(--text-sub); margin-top: 12px; max-width: 340px; line-height: 1.7; }
.footer-col h4 { font-size: 14px; color: #fff; margin-bottom: 14px; }
.footer-col a { display: block; font-size: 14px; color: var(--text-sub); padding: 4px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--secondary); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.06); padding-top: 20px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); transition: color 0.2s; }
.footer-bottom a:hover { color: var(--secondary); }

@media (max-width: 992px) {
  :root { --spacer: 64px; }
  .masonry-grid { columns: 2; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .track-list { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .nav-links { gap: 2px; }
  .nav-links a { padding: 8px 10px; font-size: 13px; }
}
@media (max-width: 768px) {
  .header.nav-open .nav-bar { flex-wrap: wrap; border-radius: 24px; padding-bottom: 16px; }
  .nav-toggle { display: block; }
  .nav-links, .nav-cta { display: none; }
  .header.nav-open .nav-links { display: flex; flex-direction: column; width: 100%; order: 3; margin-top: 8px; gap: 4px; }
  .header.nav-open .nav-links a { width: 100%; text-align: center; padding: 12px; font-size: 14px; }
  .header.nav-open .nav-cta { display: block; order: 2; }
  .category-hero { padding: 150px 0 56px; }
  .hero-actions .btn { width: 100%; }
  .masonry-grid { columns: 1; }
  .metrics-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .metric-badge { flex-direction: column; text-align: center; gap: 10px; padding: 16px; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .faq-answer { padding-left: 20px; }
}
@media (max-width: 576px) {
  :root { --spacer: 48px; }
  .container { padding: 0 16px; }
  .metrics-grid { grid-template-columns: 1fr; }
  .nav-bar { width: calc(100% - 20px); padding-left: 16px; }
  .nav-logo { font-size: 16px; }
  .category-hero h1 { font-size: 30px; }
  .hero-subtitle { font-size: 15px; }
  .masonry-card .card-body { padding: 18px; }
  .track-item { flex-wrap: wrap; }
  .track-badge { margin-left: 0; }
  .contact-form { padding: 22px; }
}