/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1526;
  --bg-card: #141b2d;
  --bg-card-hover: #1a2338;
  --bg-dark: #070b14;
  --accent: #00e5a0;
  --accent-hover: #00ffb3;
  --accent-secondary: #8b5cf6;
  --accent-glow: rgba(0, 229, 160, 0.3);
  --accent-glow-secondary: rgba(139, 92, 246, 0.35);
  --cyan: #00d4ff;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(0, 229, 160, 0.25);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 40px rgba(0, 229, 160, 0.12);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
  --spacing-section: 88px;
  --container: 1200px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== Reset / Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
::selection {
  background: rgba(0, 229, 160, 0.3);
  color: #fff;
}
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ========== 容器 ========== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn i {
  font-size: 14px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #00c4a0);
  color: #08111c;
  box-shadow: 0 4px 20px rgba(0, 229, 160, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 229, 160, 0.4);
  filter: brightness(1.05);
  color: #08111c;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 12px rgba(0, 229, 160, 0.3);
}
.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 229, 160, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.1);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-secondary {
  background: linear-gradient(135deg, var(--accent-secondary), #6d3ef5);
  color: #fff;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.4);
  filter: brightness(1.05);
  color: #fff;
}
.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ========== 标签 / 徽章 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(0, 229, 160, 0.1);
  border: 1px solid rgba(0, 229, 160, 0.2);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.badge-purple {
  background: rgba(139, 92, 246, 0.12);
  border-color: rgba(139, 92, 246, 0.25);
  color: #a78bfa;
}
.badge-cyan {
  background: rgba(0, 212, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.2);
  color: var(--cyan);
}

/* ========== Header / 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--cyan), var(--accent-secondary), transparent);
  opacity: 0.6;
}
.site-header.scrolled {
  background: rgba(7, 11, 20, 0.96);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.5px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
  z-index: 1;
}
.logo i {
  font-size: 22px;
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 8px 16px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}
.nav-link.active {
  color: var(--accent);
  background: rgba(0, 229, 160, 0.08);
  text-shadow: 0 0 16px rgba(0, 229, 160, 0.4);
}
.nav-link.active::before {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 4px;
  box-shadow: 0 0 8px var(--accent);
}
.header-cta {
  padding: 8px 20px;
  font-size: 14px;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 20px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: rgba(0, 229, 160, 0.1);
  color: var(--accent);
}
.nav-toggle.active {
  background: rgba(0, 229, 160, 0.15);
  color: var(--accent);
}

/* ========== 移动端导航菜单 ========== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(7, 11, 20, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 24px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu .mobile-link {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 500;
  transition: var(--transition);
}
.mobile-menu .mobile-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}
.mobile-menu .mobile-link.active {
  color: var(--accent);
  background: rgba(0, 229, 160, 0.08);
}
.mobile-menu .mobile-cta {
  margin-top: 8px;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 100px;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7, 11, 20, 0.92) 0%, rgba(10, 14, 26, 0.75) 50%, rgba(7, 11, 20, 0.88) 100%);
  z-index: 1;
}
.hero::after {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.12), transparent 70%);
  z-index: 1;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 229, 160, 0.1);
  border: 1px solid rgba(0, 229, 160, 0.25);
  border-radius: 999px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}
.hero-badge i {
  font-size: 14px;
}
.hero h1 {
  font-size: 56px;
  font-weight: 900;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 600px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 32px;
}
.hero-stat {
  text-align: left;
}
.hero-stat .num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  display: block;
  line-height: 1.2;
}
.hero-stat .num span {
  color: var(--accent);
}
.hero-stat .label {
  font-size: 13px;
  color: var(--text-muted);
  display: block;
  margin-top: 4px;
}
/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
  letter-spacing: 2px;
  gap: 8px;
  transition: var(--transition);
}
.scroll-hint i {
  font-size: 18px;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ========== 核心特色 ========== */
.section {
  padding: var(--spacing-section) 0;
}
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}
.section-header .badge {
  margin-bottom: 16px;
}
.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 16px;
}
.section-title .gradient {
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow), var(--shadow-glow);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 229, 160, 0.1), rgba(0, 212, 255, 0.1));
  border-radius: var(--radius-md);
  color: var(--accent);
  font-size: 22px;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 229, 160, 0.15);
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== 分类入口 ========== */
.categories-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.categories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--border);
  transition: var(--transition);
  background: var(--bg-card);
}
.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  transition: transform 0.6s ease, opacity 0.3s ease;
}
.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 11, 20, 0.6) 50%, rgba(7, 11, 20, 0.95) 100%);
  z-index: 1;
}
.category-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.category-card:hover img {
  transform: scale(1.08);
  opacity: 0.5;
}
.category-content {
  position: relative;
  z-index: 2;
  padding: 32px;
  width: 100%;
}
.category-content .category-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}
.category-content h3 {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.category-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.category-link:hover {
  gap: 12px;
  color: var(--accent-hover);
}
.category-link i {
  font-size: 13px;
}

/* ========== 最新资讯 ========== */
.news-section {
  background: var(--bg-primary);
}
.news-section .section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  max-width: none;
  text-align: left;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.news-section .section-header .header-text {
  max-width: 600px;
}
.news-section .section-title {
  margin-bottom: 8px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--border-accent);
}
.news-thumb {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .news-thumb img {
  transform: scale(1.05);
}
.news-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(7, 11, 20, 0.8) 100%);
}
.news-category-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 4px 12px;
  background: rgba(7, 11, 20, 0.8);
  border: 1px solid rgba(0, 229, 160, 0.3);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}
.news-body {
  padding: 20px 22px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-body h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
  color: #fff;
}
.news-body h3 a {
  color: inherit;
}
.news-body h3 a:hover {
  color: var(--accent);
}
.news-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 14px;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-date i {
  font-size: 12px;
}
.news-read-more {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.news-read-more:hover {
  gap: 8px;
}
.empty-tip {
  text-align: center;
  color: var(--text-muted);
  font-size: 16px;
  padding: 60px 20px;
  grid-column: 1 / -1;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
}

/* ========== 使用流程 ========== */
.process-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}
.process-step {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
}
.process-step:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow);
}
.step-num {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  color: #08111c;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 0 30px rgba(0, 229, 160, 0.25);
}
.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.process-arrow {
  position: absolute;
  top: 50%;
  right: -22px;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.2);
  font-size: 16px;
  z-index: 2;
  pointer-events: none;
}
.process-step:last-child .process-arrow {
  display: none;
}

/* ========== 数据统计 ========== */
.stats-section {
  position: relative;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  padding: 80px 0;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7, 11, 20, 0.94), rgba(10, 14, 26, 0.88));
  z-index: 1;
}
.stats-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item {
  padding: 36px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(0, 229, 160, 0.05);
  border-color: var(--border-accent);
  transform: translateY(-4px);
}
.stat-number {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========== FAQ ========== */
.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--border-accent);
}
details.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  list-style: none;
  gap: 16px;
}
details.faq-item summary::-webkit-details-marker {
  display: none;
}
details.faq-item summary i {
  font-size: 16px;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
details.faq-item[open] summary i {
  transform: rotate(45deg);
}
details.faq-item .faq-answer {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 16px;
  margin-top: 0;
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7, 11, 20, 0.95), rgba(10, 14, 26, 0.9), rgba(7, 11, 20, 0.95));
  z-index: 1;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}
.cta-inner .badge {
  margin-bottom: 20px;
}
.cta-inner h2 {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-inner p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 30px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.footer-brand {
  max-width: 340px;
}
.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.footer-links {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom a {
  color: var(--text-muted);
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  :root {
    --spacing-section: 70px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .process-arrow {
    display: none;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-number {
    font-size: 34px;
  }
  .hero h1 {
    font-size: 44px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .header-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }
  .hero h1 {
    font-size: 36px;
  }
  .hero-desc {
    font-size: 16px;
  }
  .hero-stats {
    gap: 24px;
    padding-top: 24px;
  }
  .hero-stat .num {
    font-size: 24px;
  }
  .categories-grid {
    grid-template-columns: 1fr;
  }
  .category-card {
    min-height: 260px;
  }
  .section-title {
    font-size: 30px;
  }
  .stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .stat-number {
    font-size: 30px;
  }
  .cta-inner h2 {
    font-size: 30px;
  }
  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }
  .footer-links {
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .scroll-hint {
    display: none;
  }
}

@media (max-width: 520px) {
  :root {
    --spacing-section: 56px;
  }
  .container {
    padding: 0 18px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .section-title {
    font-size: 26px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .stats-inner {
    grid-template-columns: 1fr;
  }
  .category-content {
    padding: 24px;
  }
  .category-content h3 {
    font-size: 22px;
  }
}

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.hero-inner {
  animation: fadeInUp 0.8s ease both;
}
.section {
  animation: fadeInUp 0.6s ease both;
}

/* ========== 辅助类 ========== */
.text-center {
  text-align: center;
}
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

/* roulang page: category1 */
:root {
  --bg-body: #080c14;
  --bg-deep: #05070d;
  --bg-section: #0d1420;
  --bg-card: #111a2c;
  --bg-card-hover: #16233a;
  --bg-elevated: #1a2a42;
  --neon-primary: #00e5ff;
  --neon-primary-rgb: 0, 229, 255;
  --neon-secondary: #8b5cf6;
  --neon-accent: #00ffa3;
  --warning: #ffb020;
  --danger: #ff5d5d;
  --text-main: #eef2f8;
  --text-body: #b8c4d8;
  --text-muted: #6f7d99;
  --border-soft: rgba(255, 255, 255, 0.08);
  --border-neon: rgba(0, 229, 255, 0.2);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 32px rgba(0, 229, 255, 0.1);
  --transition: all 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

input, textarea {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 12, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-neon);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 229, 255, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-main);
  white-space: nowrap;
}

.logo i {
  color: var(--neon-primary);
  font-size: 22px;
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.7));
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.nav-link {
  position: relative;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  color: var(--text-body);
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--neon-primary);
  background: rgba(0, 229, 255, 0.08);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.55);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon-primary);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.8);
}

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  color: var(--text-main);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.nav-toggle:hover {
  border-color: var(--neon-primary);
  color: var(--neon-primary);
  box-shadow: var(--shadow-glow);
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 13px 28px;
  transition: var(--transition);
  white-space: nowrap;
}

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

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

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

.btn-primary {
  background: linear-gradient(135deg, #00e5ff 0%, #0ea5e9 100%);
  color: #02141d;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.5);
  color: #02141d;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--neon-primary);
  border: 1px solid var(--border-neon);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.06);
}

.btn-outline:hover {
  background: rgba(0, 229, 255, 0.1);
  box-shadow: 0 0 28px rgba(0, 229, 255, 0.18);
  border-color: rgba(0, 229, 255, 0.45);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}

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

.btn-block {
  width: 100%;
}

/* ---------- Hero ---------- */
.page-hero {
  position: relative;
  padding: 112px 0 96px;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  border-bottom: 1px solid var(--border-soft);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-neon);
  color: var(--neon-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 28px;
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 1px;
  margin-bottom: 18px;
  text-shadow: 0 0 30px rgba(0, 229, 255, 0.15);
}

.hero-lead {
  max-width: 700px;
  margin: 0 auto 36px;
  color: var(--text-body);
  font-size: 17px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 42px;
}

.hero-tags {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-soft);
  color: var(--text-body);
  font-size: 13px;
}

.tag i {
  color: var(--neon-accent);
}

/* ---------- Sections ---------- */
.section {
  padding: 96px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--neon-primary);
  margin-bottom: 14px;
  position: relative;
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: "";
  display: none;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}

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

/* ---------- Entry Cards ---------- */
.entry-section {
  background: var(--bg-section);
}

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

.entry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.entry-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-neon);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.entry-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

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

.entry-card:hover .entry-cover img {
  transform: scale(1.06);
}

.entry-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(8, 12, 20, 0.75) 100%);
}

.entry-status {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 255, 163, 0.16);
  border: 1px solid rgba(0, 255, 163, 0.4);
  color: var(--neon-accent);
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.entry-body {
  padding: 24px;
}

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

.entry-body p {
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}

.entry-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

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

.entry-meta i {
  color: var(--neon-primary);
}

/* ---------- Status Band ---------- */
.status-band {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 40px 0;
}

.status-band .container {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.status-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  padding-right: 24px;
  border-right: 1px solid var(--border-soft);
  white-space: nowrap;
}

.status-title i {
  color: var(--neon-accent);
}

.status-list {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  flex: 1;
}

.status-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-body);
  white-space: nowrap;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.ok {
  background: var(--neon-accent);
  box-shadow: 0 0 8px rgba(0, 255, 163, 0.8);
  animation: pulse 2s ease-in-out infinite;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ---------- Guide Steps ---------- */
.guide-section {
  background: var(--bg-section);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}

.step-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 40px 28px 32px;
  transition: var(--transition);
}

.step-card:hover {
  border-color: var(--border-neon);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transform: translateY(-4px);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.18), rgba(139, 92, 246, 0.18));
  border: 1px solid var(--border-neon);
  color: var(--neon-primary);
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 20px;
}

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

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

.step-arrow {
  position: absolute;
  right: -22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  color: var(--neon-primary);
  font-size: 18px;
  opacity: 0.7;
}

/* ---------- Stats ---------- */
.stats-section {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(139, 92, 246, 0.08)), var(--bg-deep);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 64px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-num {
  display: block;
  font-size: 42px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-body);
  letter-spacing: 2px;
}

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

.faq-container {
  max-width: 860px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-neon);
}

.faq-item[open] {
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  user-select: none;
}

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

.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--neon-primary);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item p {
  padding: 0 24px 22px;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  padding: 100px 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  text-align: center;
}

.cta-inner {
  padding: 64px 40px;
  border-radius: var(--radius-lg);
  background: rgba(13, 20, 32, 0.8);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-neon);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
}

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

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

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-neon);
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 14px;
  display: inline-flex;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 380px;
}

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

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 2.2;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--neon-primary);
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.3);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: 13px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .entry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-arrow {
    display: none;
  }
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
    gap: 16px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 24px;
    background: rgba(8, 12, 20, 0.97);
    border-bottom: 1px solid var(--border-neon);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
  }
  .nav-open .main-nav {
    display: flex;
  }
  .nav-link {
    padding: 14px 18px;
    font-size: 16px;
  }
  .nav-link.active::after {
    display: none;
  }
  .header-cta {
    margin-left: auto;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .page-hero {
    padding: 80px 0 64px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .hero-lead {
    font-size: 15px;
  }
  .section {
    padding: 72px 0;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .entry-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .entry-body {
    padding: 20px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .status-band .container {
    flex-direction: column;
    align-items: flex-start;
  }
  .status-title {
    border-right: none;
    padding-right: 0;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-inner {
    padding: 40px 24px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo {
    font-size: 17px;
  }
  .logo i {
    font-size: 18px;
  }
  .header-cta {
    display: none;
  }
  .page-hero h1 {
    font-size: 27px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-tags {
    flex-direction: column;
    align-items: center;
  }
  .entry-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .stat-num {
    font-size: 32px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
  --primary: #00f5d4;
  --primary-dark: #00c4a8;
  --secondary: #b537f2;
  --bg-dark: #0b0f19;
  --bg-deep: #080b12;
  --bg-card: #121a2e;
  --bg-card-hover: #182440;
  --text-main: #e8ecf4;
  --text-weak: #8a93a8;
  --border: #1e2844;
  --border-neon: rgba(0, 245, 212, 0.35);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 24px rgba(0, 245, 212, 0.12);
  --space: 4rem;
  --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  background: rgba(8, 11, 18, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header::after {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
  opacity: 0.6;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: var(--text-main);
}

.logo i {
  color: var(--primary);
  font-size: 1.4rem;
  text-shadow: 0 0 12px rgba(0, 245, 212, 0.55);
}

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

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

.nav-link {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-weak);
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

.nav-link:hover {
  color: var(--text-main);
  background: rgba(0, 245, 212, 0.06);
}

.nav-link.active {
  color: var(--primary);
  border-color: rgba(0, 245, 212, 0.25);
  background: rgba(0, 245, 212, 0.08);
  box-shadow: var(--shadow-glow);
  text-shadow: 0 0 8px rgba(0, 245, 212, 0.35);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #081018;
  box-shadow: 0 0 18px rgba(0, 245, 212, 0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #081018;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 245, 212, 0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  box-shadow: 0 0 16px rgba(181, 55, 242, 0.2);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.88rem;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 1.15rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-toggle:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ===== Badge / Tag ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(0, 245, 212, 0.1);
  border: 1px solid rgba(0, 245, 212, 0.25);
  color: var(--primary);
  white-space: nowrap;
}

.tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  background: rgba(181, 55, 242, 0.1);
  border: 1px solid rgba(181, 55, 242, 0.25);
  color: #c97cf5;
  margin-right: 8px;
  margin-bottom: 6px;
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 5.5rem 0 3.5rem;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8, 11, 18, 0.96), rgba(8, 11, 18, 0.82), rgba(11, 15, 25, 0.75));
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-weak);
  margin-bottom: 1.5rem;
}

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

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

.breadcrumb i {
  font-size: 0.7rem;
  color: #4a5268;
}

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

.page-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.4;
  max-width: 800px;
  letter-spacing: 0.5px;
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--text-weak);
}

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

/* ===== Article Main ===== */
.article-main-section {
  padding: var(--space) 0;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 2.5rem;
  min-width: 0;
}

.article-body {
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--text-main);
}

.article-body p {
  margin-bottom: 1.4rem;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 700;
  margin: 2.4rem 0 1.2rem;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 0.9rem;
  color: var(--primary);
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.5rem;
  padding-left: 1.6rem;
}

.article-body li {
  margin-bottom: 0.6rem;
}

.article-body blockquote {
  border-left: 3px solid var(--secondary);
  background: rgba(181, 55, 242, 0.07);
  padding: 1rem 1.5rem;
  margin: 1.6rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-main);
}

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

.article-body img {
  border-radius: var(--radius);
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}

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

.article-body a:hover {
  border-bottom-color: var(--primary);
}

.article-body strong {
  color: #fff;
  font-weight: 600;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

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

.article-body table th {
  background: rgba(0, 245, 212, 0.08);
  color: var(--primary);
  font-weight: 600;
}

.article-body pre {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

.article-body code {
  font-family: 'Courier New', monospace;
  background: rgba(0, 245, 212, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.article-footer-tags {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.article-footer-tags .label {
  font-size: 0.85rem;
  color: var(--text-weak);
  margin-right: 4px;
}

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  box-shadow: var(--shadow);
}

.sidebar-widget .widget-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-widget .widget-title i {
  color: var(--primary);
}

.widget-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.widget-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--text-weak);
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.widget-links a:hover {
  color: var(--primary);
  background: rgba(0, 245, 212, 0.06);
  transform: translateX(4px);
}

.widget-links a i {
  width: 20px;
  text-align: center;
  font-size: 0.9rem;
}

.widget-posts {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.widget-posts li a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text-weak);
  font-size: 0.9rem;
  line-height: 1.5;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
}

.widget-posts li a:hover {
  color: var(--primary);
  background: rgba(0, 245, 212, 0.05);
  border-left-color: var(--primary);
  padding-left: 14px;
}

.widget-note {
  font-size: 0.88rem;
  color: var(--text-weak);
  line-height: 1.7;
  background: rgba(255, 193, 7, 0.05);
  border: 1px solid rgba(255, 193, 7, 0.15);
  border-radius: 8px;
  padding: 12px 14px;
}

/* ===== Related ===== */
.related-section {
  padding: var(--space) 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.section-head p {
  color: var(--text-weak);
  font-size: 0.95rem;
}

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

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

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

.related-img {
  height: 150px;
  overflow: hidden;
}

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

.related-card:hover .related-img img {
  transform: scale(1.05);
}

.related-info {
  padding: 1.2rem 1.3rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.related-info h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.related-card:hover .related-info h3 {
  color: var(--primary);
}

.related-date {
  font-size: 0.8rem;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}

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

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.faq-item.open {
  border-color: var(--border-neon);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 18px 22px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  background: transparent;
  text-align: left;
}

.faq-question i {
  font-size: 0.85rem;
  color: var(--text-weak);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 22px 18px;
  color: var(--text-weak);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ===== Not Found ===== */
.not-found-section {
  padding: 5rem 0;
  text-align: center;
}

.not-found-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  max-width: 560px;
  margin: 0 auto;
  box-shadow: var(--shadow);
}

.not-found-box i {
  font-size: 3rem;
  color: var(--text-weak);
  margin-bottom: 1.2rem;
  display: block;
}

.not-found-box h2 {
  font-size: 1.6rem;
  margin-bottom: 0.8rem;
}

.not-found-box p {
  color: var(--text-weak);
  margin-bottom: 1.8rem;
}

/* ===== CTA ===== */
.cta-section {
  padding: var(--space) 0;
  background: linear-gradient(135deg, rgba(181, 55, 242, 0.12), rgba(0, 245, 212, 0.08)), var(--bg-deep);
  border-top: 1px solid var(--border);
  text-align: center;
}

.cta-box {
  max-width: 720px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cta-box p {
  color: var(--text-weak);
  font-size: 1rem;
  margin-bottom: 1.8rem;
}

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

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.footer-brand {
  max-width: 340px;
}

.footer-brand .logo {
  margin-bottom: 0.8rem;
}

.footer-brand p {
  color: var(--text-weak);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.footer-col a {
  display: block;
  color: var(--text-weak);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0;
  font-size: 0.82rem;
  color: var(--text-weak);
}

.footer-bottom span:first-child {
  letter-spacing: 0.5px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .sidebar-widget {
    flex: 1;
    min-width: 240px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    min-height: 64px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(8, 11, 18, 0.98);
    border-top: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px 16px;
  }
  .header-cta {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .page-hero {
    padding: 3.5rem 0 2.5rem;
  }
  .page-hero h1 {
    font-size: 1.4rem;
  }
  .article-content {
    padding: 1.5rem;
  }
  .article-body h2 {
    font-size: 1.3rem;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .cta-box h2 {
    font-size: 1.5rem;
  }
  .footer-inner {
    flex-direction: column;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo {
    font-size: 1.05rem;
  }
  .article-content {
    padding: 1.2rem;
    border-radius: 14px;
  }
  .article-body {
    font-size: 0.98rem;
  }
  .article-body h2 {
    font-size: 1.18rem;
  }
  .page-hero h1 {
    font-size: 1.2rem;
  }
  .article-meta {
    gap: 10px;
  }
  .widget-links a {
    padding: 8px 8px;
  }
}

/* roulang page: category2 */
:root{
  --bg:#0a0e17;
  --bg-deep:#060910;
  --surface:#111827;
  --surface-2:#1a2233;
  --border:rgba(255,255,255,.08);
  --text:#e8edf7;
  --muted:#8b96ad;
  --primary:#38bdf8;
  --primary-strong:#0ea5e9;
  --accent:#a78bfa;
  --gradient:linear-gradient(135deg,#0ea5e9,#6366f1);
  --radius:18px;
  --radius-sm:10px;
  --shadow:0 20px 45px rgba(0,0,0,.35);
  --shadow-sm:0 8px 22px rgba(0,0,0,.25);
  --transition:.25s ease;
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input{font-family:inherit;border:none;outline:none;background:none;color:inherit;}
ul,ol{list-style:none;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(10,14,23,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:var(--gradient);
  opacity:.55;
  pointer-events:none;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:24px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  font-weight:700;
  letter-spacing:.3px;
  white-space:nowrap;
  color:var(--text);
}
.logo i{
  font-size:1.4rem;
  color:var(--primary);
  filter:drop-shadow(0 0 10px rgba(56,189,248,.7));
}
.main-nav{
  display:flex;
  align-items:center;
  gap:8px;
}
.nav-link{
  display:flex;
  align-items:center;
  gap:6px;
  padding:10px 18px;
  border-radius:999px;
  font-size:.95rem;
  font-weight:500;
  color:var(--muted);
  transition:var(--transition);
  position:relative;
}
.nav-link:hover{
  color:#fff;
  background:rgba(255,255,255,.06);
}
.nav-link.active{
  color:var(--primary);
  background:rgba(56,189,248,.12);
  text-shadow:0 0 14px rgba(56,189,248,.6);
  box-shadow:inset 0 0 0 1px rgba(56,189,248,.35),0 0 18px rgba(56,189,248,.15);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  font-weight:600;
  transition:var(--transition);
  cursor:pointer;
  white-space:nowrap;
}
.btn-primary{
  background:var(--gradient);
  color:#fff;
  padding:12px 28px;
  font-size:.95rem;
  box-shadow:0 8px 24px rgba(15,118,210,.35);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(15,118,210,.5);
}
.btn-primary:active{
  transform:translateY(0);
}
.btn-sm{
  padding:8px 18px;
  font-size:.9rem;
}
.btn-light{
  background:rgba(255,255,255,.08);
  color:#fff;
  border:1px solid rgba(255,255,255,.14);
  padding:12px 28px;
  font-size:.95rem;
}
.btn-light:hover{
  background:rgba(255,255,255,.14);
  transform:translateY(-2px);
}
.header-cta i{
  font-size:.85rem;
}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  border-radius:12px;
  border:1px solid var(--border);
  background:var(--surface);
  color:var(--text);
  font-size:1.2rem;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:var(--transition);
}
.nav-toggle:hover{
  border-color:var(--primary);
  color:var(--primary);
}

.hero{
  position:relative;
  padding:180px 0 100px;
  background:
    linear-gradient(180deg,rgba(6,9,16,.72) 0%,rgba(10,14,23,.92) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-160px;right:-160px;
  width:480px;height:480px;
  background:radial-gradient(circle,rgba(56,189,248,.12),transparent 65%);
  pointer-events:none;
}
.hero-inner{
  max-width:820px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 18px;
  border-radius:999px;
  background:rgba(56,189,248,.1);
  border:1px solid rgba(56,189,248,.28);
  color:var(--primary);
  font-size:.85rem;
  font-weight:500;
  margin-bottom:24px;
}
.hero h1{
  font-size:3.4rem;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-1px;
  margin-bottom:20px;
}
.hero h1 span{
  background:var(--gradient);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero p{
  font-size:1.15rem;
  color:var(--muted);
  max-width:680px;
  margin-bottom:36px;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.hero-stats{
  display:flex;
  gap:48px;
  margin-top:60px;
  flex-wrap:wrap;
}
.stat-item h3{
  font-size:1.8rem;
  font-weight:800;
  background:var(--gradient);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-item span{
  font-size:.85rem;
  color:var(--muted);
}

.section{
  padding:96px 0;
}
.section-alt{
  background:var(--surface);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.section-head{
  max-width:720px;
  margin-bottom:56px;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:.85rem;
  font-weight:600;
  letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-tag::before{
  content:"";
  width:24px;height:2px;
  background:var(--gradient);
  border-radius:2px;
}
.section-head h2{
  font-size:2.4rem;
  font-weight:800;
  line-height:1.25;
  margin-bottom:14px;
}
.section-head p{
  font-size:1.05rem;
  color:var(--muted);
}
.section-head.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.section-tag.center::before{
  display:none;
}

.intro-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.intro-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.intro-media img{
  width:100%;
  height:380px;
  object-fit:cover;
}
.intro-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(10,14,23,.45));
}
.intro-content h3{
  font-size:1.6rem;
  font-weight:700;
  margin-bottom:16px;
}
.intro-content p{
  color:var(--muted);
  margin-bottom:18px;
}
.feature-list{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin-top:24px;
}
.feature-list li{
  display:flex;
  align-items:flex-start;
  gap:12px;
  font-size:1rem;
}
.feature-list li i{
  color:var(--primary);
  margin-top:5px;
  font-size:.9rem;
}

.cards-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.play-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:34px 28px;
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.play-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--gradient);
  opacity:0;
  transition:var(--transition);
}
.play-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow);
  border-color:rgba(56,189,248,.25);
}
.play-card:hover::before{
  opacity:1;
}
.play-icon{
  width:56px;
  height:56px;
  border-radius:14px;
  background:rgba(56,189,248,.12);
  border:1px solid rgba(56,189,248,.2);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.4rem;
  color:var(--primary);
  margin-bottom:20px;
}
.play-card h3{
  font-size:1.2rem;
  font-weight:700;
  margin-bottom:10px;
}
.play-card p{
  color:var(--muted);
  font-size:.95rem;
}
.play-card .tag-row{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  font-size:.78rem;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  color:var(--muted);
}
.tag-primary{
  background:rgba(56,189,248,.1);
  border-color:rgba(56,189,248,.2);
  color:var(--primary);
}

.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
  position:relative;
}
.step-item{
  background:var(--surface);
  border-radius:var(--radius);
  border:1px solid var(--border);
  padding:30px 24px;
  transition:var(--transition);
  position:relative;
}
.step-item:hover{
  transform:translateY(-5px);
  border-color:rgba(56,189,248,.3);
  box-shadow:var(--shadow-sm);
}
.step-num{
  font-size:2rem;
  font-weight:800;
  background:var(--gradient);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  display:block;
  margin-bottom:14px;
}
.step-item h4{
  font-size:1.05rem;
  font-weight:700;
  margin-bottom:8px;
}
.step-item p{
  color:var(--muted);
  font-size:.9rem;
}
.step-arrow{
  position:absolute;
  right:-20px;top:50%;
  transform:translateY(-50%);
  color:var(--primary);
  font-size:1.1rem;
  z-index:2;
  opacity:.6;
}

.stats-band{
  background:linear-gradient(135deg,rgba(56,189,248,.08),rgba(99,102,241,.08));
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:56px 48px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:36px;
  text-align:center;
}
.stat-band-item h3{
  font-size:2.2rem;
  font-weight:800;
  background:var(--gradient);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:4px;
}
.stat-band-item p{
  color:var(--muted);
  font-size:.9rem;
}

.faq-wrap{
  max-width:860px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{
  border-color:rgba(56,189,248,.25);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 26px;
  cursor:pointer;
  font-weight:600;
  font-size:1.02rem;
  list-style:none;
  user-select:none;
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary i{
  color:var(--primary);
  font-size:1rem;
  transition:var(--transition);
  flex-shrink:0;
  width:28px;
  height:28px;
  border-radius:50%;
  background:rgba(56,189,248,.1);
  display:flex;
  align-items:center;
  justify-content:center;
}
.faq-item[open] summary i{
  transform:rotate(180deg);
}
.faq-answer{
  padding:0 26px 22px;
  color:var(--muted);
  font-size:.95rem;
}

.cta-section{
  padding:70px 0 96px;
}
.cta-box{
  position:relative;
  background:linear-gradient(135deg,#0ea5e9,#6366f1);
  border-radius:calc(var(--radius) + 8px);
  padding:60px 64px;
  overflow:hidden;
  text-align:center;
}
.cta-box::before{
  content:"";
  position:absolute;
  top:-80px;left:-80px;
  width:260px;height:260px;
  background:rgba(255,255,255,.12);
  border-radius:50%;
}
.cta-box::after{
  content:"";
  position:absolute;
  bottom:-90px;right:-40px;
  width:300px;height:300px;
  border:2px solid rgba(255,255,255,.15);
  border-radius:50%;
}
.cta-box h2{
  font-size:2rem;
  font-weight:800;
  color:#fff;
  margin-bottom:14px;
  position:relative;
  z-index:1;
}
.cta-box p{
  color:rgba(255,255,255,.85);
  margin-bottom:30px;
  position:relative;
  z-index:1;
}
.cta-box .btn{
  position:relative;
  z-index:1;
  background:#fff;
  color:var(--primary-strong);
  box-shadow:0 8px 26px rgba(0,0,0,.18);
}
.cta-box .btn:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(0,0,0,.25);
}

.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--border);
  padding:70px 0 0;
}
.footer-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:56px;
  padding-bottom:48px;
}
.footer-brand .logo{
  font-size:1.2rem;
  margin-bottom:16px;
}
.footer-brand p{
  color:var(--muted);
  font-size:.92rem;
  max-width:340px;
  margin-bottom:22px;
}
.footer-links{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:36px;
}
.footer-col h4{
  font-size:.95rem;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  position:relative;
  padding-bottom:8px;
}
.footer-col h4::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:32px;height:2px;
  background:var(--gradient);
  border-radius:2px;
}
.footer-col a{
  display:block;
  color:var(--muted);
  font-size:.92rem;
  padding:6px 0;
  transition:var(--transition);
}
.footer-col a:hover{
  color:var(--primary);
  padding-left:6px;
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  color:var(--muted);
  font-size:.85rem;
}
.footer-bottom span:last-child{
  display:flex;
  align-items:center;
  gap:6px;
}
.footer-bottom span:last-child::before{
  content:"";width:6px;height:6px;
  background:var(--primary);
  border-radius:50%;
  box-shadow:0 0 8px rgba(56,189,248,.6);
}

@media(max-width:1024px){
  .cards-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .steps-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .step-arrow{
    display:none;
  }
  .stats-band{
    grid-template-columns:repeat(2,1fr);
  }
  .hero h1{
    font-size:2.8rem;
  }
}

@media(max-width:768px){
  .header-inner{
    height:64px;
  }
  .main-nav{
    position:fixed;
    top:64px;
    right:16px;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    width:260px;
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:16px;
    padding:14px;
    box-shadow:var(--shadow);
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:var(--transition);
    z-index:999;
  }
  .main-nav.open{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .nav-link{
    padding:12px 16px;
    border-radius:10px;
  }
  .header-cta{
    display:none;
  }
  .nav-toggle{
    display:flex;
  }
  .hero{
    padding:150px 0 80px;
  }
  .hero h1{
    font-size:2.2rem;
  }
  .hero p{
    font-size:1rem;
  }
  .hero-stats{
    gap:28px;
  }
  .intro-grid{
    grid-template-columns:1fr;
    gap:36px;
  }
  .section{
    padding:64px 0;
  }
  .section-head h2{
    font-size:1.8rem;
  }
  .footer-inner{
    grid-template-columns:1fr;
    gap:40px;
  }
  .cta-box{
    padding:48px 28px;
  }
  .cta-box h2{
    font-size:1.5rem;
  }
}

@media(max-width:520px){
  .container{
    padding:0 18px;
  }
  .cards-grid{
    grid-template-columns:1fr;
  }
  .steps-grid{
    grid-template-columns:1fr;
  }
  .stats-band{
    grid-template-columns:1fr;
    padding:40px 24px;
  }
  .hero-actions .btn{
    width:100%;
  }
  .hero-stats{
    flex-direction:column;
    gap:20px;
  }
  .footer-links{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    justify-content:center;
    text-align:center;
  }
  .site-footer{
    padding-top:50px;
  }
}