/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #1a1a2e;
  --primary-light: #2d2d4a;
  --secondary: #c9956b;
  --secondary-light: #e8c9a8;
  --secondary-dark: #a87a52;
  --accent: #d4a574;
  --bg-dark: #0f0f1a;
  --bg-card: #1e1e34;
  --bg-card-hover: #29294a;
  --text-primary: #f0ece4;
  --text-secondary: #c8c0b4;
  --text-muted: #8a7e72;
  --border-color: rgba(201, 149, 107, 0.25);
  --border-light: rgba(201, 149, 107, 0.12);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
}
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-dark);
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; border: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 600; line-height: 1.3; color: var(--text-primary); }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
p { color: var(--text-secondary); margin-bottom: 1rem; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { position: relative; display: inline-block; }
.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--secondary);
  margin: 12px auto 0;
  border-radius: 2px;
}
.section-title p { margin-top: 12px; font-size: 1.1rem; color: var(--text-muted); max-width: 600px; margin-left: auto; margin-right: auto; }
.text-center { text-align: center; }
/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--secondary-dark); }
/* ===== 玻璃导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(15, 15, 26, 0.55);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(201, 149, 107, 0.12);
  transition: var(--transition);
}
.header.scrolled {
  background: rgba(15, 15, 26, 0.92);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
  border-bottom-color: rgba(201, 149, 107, 0.2);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.02em;
}
.logo i {
  color: var(--secondary);
  font-size: 1.3rem;
}
.logo span { color: var(--secondary); font-weight: 300; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
  letter-spacing: 0.01em;
}
.nav a:hover { color: var(--text-primary); background: rgba(201, 149, 107, 0.12); }
.nav a.active {
  color: var(--secondary);
  background: rgba(201, 149, 107, 0.15);
  box-shadow: 0 0 20px rgba(201, 149, 107, 0.08);
}
.nav-cta {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%) !important;
  color: #0f0f1a !important;
  padding: 10px 28px !important;
  border-radius: 40px !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 16px rgba(201, 149, 107, 0.3);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(201, 149, 107, 0.4);
  color: #0f0f1a !important;
  background: linear-gradient(135deg, var(--secondary-light) 0%, var(--secondary) 100%) !important;
}
.mobile-toggle { display: none; font-size: 1.6rem; color: var(--text-primary); padding: 8px; cursor: pointer; }
/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding-top: var(--header-height);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(15,15,26,0.3) 0%, rgba(15,15,26,0.75) 70%, rgba(15,15,26,0.9) 100%);
  z-index: 1;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(15,15,26,0.4) 50%, var(--bg-dark) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 40px 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  border: 1px solid rgba(201, 149, 107, 0.3);
  border-radius: 40px;
  font-size: 0.85rem;
  color: var(--secondary-light);
  background: rgba(15,15,26,0.5);
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.hero-badge i { font-size: 0.75rem; }
.hero h1 { margin-bottom: 16px; }
.hero h1 .highlight { color: var(--secondary); }
.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  border-radius: 40px;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.02em;
}
.btn-primary {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
  color: #0f0f1a;
  box-shadow: 0 4px 20px rgba(201, 149, 107, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 36px rgba(201, 149, 107, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(201, 149, 107, 0.35);
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  background: rgba(201, 149, 107, 0.12);
  border-color: var(--secondary);
  transform: translateY(-2px);
}
.hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--secondary);
  line-height: 1.2;
}
.hero-stat .label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}
/* ===== 核心说明 ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.intro-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  position: relative;
}
.intro-image img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s; }
.intro-image:hover img { transform: scale(1.03); }
.intro-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201,149,107,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.intro-text h2 { margin-bottom: 20px; }
.intro-text p { margin-bottom: 16px; font-size: 1.05rem; }
.intro-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}
.intro-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.intro-feature:hover { background: var(--bg-card-hover); border-color: var(--border-color); }
.intro-feature i { color: var(--secondary); font-size: 1rem; }
/* ===== 分类入口 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.category-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  cursor: pointer;
  group: true;
}
.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}
.category-card .card-img {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.category-card:hover .card-img img { transform: scale(1.06); }
.category-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15,15,26,0.8) 100%);
}
.category-card .card-body {
  padding: 20px 24px 24px;
  position: relative;
}
.category-card .card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
.category-card .card-body h3 i { color: var(--secondary); margin-right: 8px; font-size: 1rem; }
.category-card .card-body p { font-size: 0.95rem; margin-bottom: 0; }
.card-tag {
  display: inline-block;
  padding: 2px 14px;
  border-radius: 40px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(201, 149, 107, 0.15);
  color: var(--secondary-light);
  border: 1px solid rgba(201, 149, 107, 0.2);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}
/* ===== 最新资讯 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.news-card {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color);
}
.news-card-image {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.news-card:hover .news-card-image img { transform: scale(1.04); }
.news-category {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 14px;
  border-radius: 40px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(15,15,26,0.7);
  backdrop-filter: blur(8px);
  color: var(--secondary-light);
  border: 1px solid rgba(201,149,107,0.2);
}
.news-card-content { padding: 18px 22px 22px; }
.news-card-content h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-content p {
  font-size: 0.92rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.news-meta i { margin-right: 4px; font-size: 0.75rem; }
.empty-tip {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 1.1rem;
  grid-column: 1 / -1;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-light);
}
/* ===== 数据统计 ===== */
.stats-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  position: relative;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.06;
  pointer-events: none;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.stat-item { padding: 20px; }
.stat-item .num {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--secondary);
  line-height: 1.2;
  display: block;
}
.stat-item .num i { font-size: 2rem; margin-right: 8px; opacity: 0.7; }
.stat-item .stat-label {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 8px;
  display: block;
}
.stat-item .stat-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  opacity: 0.7;
  margin-top: 4px;
}
/* ===== 流程步骤 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-color);
}
.step-card .step-number {
  width: 48px;
  height: 48px;
  line-height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
  color: #0f0f1a;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(201,149,107,0.25);
}
.step-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step-card p { font-size: 0.92rem; margin-bottom: 0; }
.step-card .step-icon { font-size: 1.6rem; color: var(--secondary); margin-bottom: 12px; display: block; }
/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-color); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
  user-select: none;
}
.faq-question i { color: var(--secondary); transition: transform 0.3s; font-size: 0.9rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 0; line-height: 1.7; }
/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
  border-top: 1px solid var(--border-light);
  text-align: center;
  padding: 80px 0;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity: 0.05;
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; max-width: 640px; margin: 0 auto; }
.cta-content h2 { margin-bottom: 16px; }
.cta-content p { font-size: 1.1rem; margin-bottom: 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
/* ===== 页脚 ===== */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-light);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { font-size: 0.92rem; color: var(--text-muted); max-width: 300px; }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-social a:hover { background: var(--secondary); color: #0f0f1a; border-color: var(--secondary); }
.footer h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text-primary); }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--secondary); }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .intro-image img { height: 320px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero { min-height: 90vh; }
  .hero h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 1.8rem; }
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(15,15,26,0.98);
    backdrop-filter: blur(20px);
    padding: 20px 24px 28px;
    gap: 6px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }
  .nav.open a { padding: 12px 20px; font-size: 1.05rem; width: 100%; text-align: center; }
  .nav.open .nav-cta { margin-top: 8px; }
  .mobile-toggle { display: block; }
  .intro-features { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item .num { font-size: 2rem; }
  .steps-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero { min-height: 85vh; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 12px; }
  .stat-item .num { font-size: 1.6rem; }
  .category-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 300px; justify-content: center; }
  .faq-question { padding: 14px 16px; font-size: 0.95rem; }
  .faq-item.active .faq-answer { padding: 0 16px 16px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a4a;
            --primary-light: #2c4a7c;
            --primary-dark: #0f1b2f;
            --accent: #f5a623;
            --accent-hover: #e0971a;
            --accent-glow: rgba(245, 166, 35, 0.25);
            --bg-dark: #0a0e1a;
            --bg-section: #0f1628;
            --bg-card: #141e33;
            --bg-card-hover: #1a2740;
            --text-light: #f0f4fa;
            --text-muted: #9aaec9;
            --text-soft: #c8d6e8;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(245, 166, 35, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 56px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(245, 166, 35, 0.12);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
        }

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

        html {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            min-height: 100vh;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            background: rgba(10, 14, 26, 0.55);
            border-bottom: 1px solid var(--border-color);
        }

        .header.scrolled {
            background: rgba(10, 14, 26, 0.88);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 12px;
        }

        .nav .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .nav .logo i {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .nav .logo span {
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: background var(--transition), color var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-light);
        }
        .nav-links a.active {
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .nav-links a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 22px;
            margin-left: 8px;
            box-shadow: 0 2px 16px var(--accent-glow);
        }
        .nav-links a.nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 24px var(--accent-glow);
            color: var(--primary-dark);
        }
        .nav-links a.nav-cta i {
            margin-right: 6px;
        }

        /* 移动端菜单按钮 */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 8px;
            cursor: pointer;
            border: 1px solid var(--border-color);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-light);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== 页面横幅 Hero ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: var(--bg-section);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 26, 0.85) 30%, rgba(15, 22, 40, 0.6) 70%, rgba(10, 14, 26, 0.5));
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-soft);
            max-width: 680px;
            line-height: 1.8;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .page-hero .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border-color);
            color: var(--text-soft);
        }
        .page-hero .hero-tags span i {
            color: var(--accent);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-darker {
            background: var(--bg-dark);
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-title h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .subtitle-accent {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 28px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(auto-fill, minmax(460px, 1fr));
        }
        .card-grid-4 {
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
        }
        .card .card-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
            display: inline-block;
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .card .card-meta i {
            color: var(--accent);
            margin-right: 4px;
        }
        .card .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent);
            margin-bottom: 12px;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent);
        }
        .card .card-link i {
            transition: transform var(--transition);
        }
        .card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 图文卡片（带封面） ===== */
        .card-cover {
            padding: 0;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .card-cover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            border-color: var(--border-glow);
        }
        .card-cover .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .card-cover .cover-body {
            padding: 20px 22px 24px;
        }
        .card-cover .cover-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card-cover .cover-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .card-cover .cover-body .cover-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent);
            margin-bottom: 10px;
        }

        /* ===== 步骤/流程 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 28px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm), var(--shadow-glow);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 16px var(--accent-glow);
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
            margin-top: 4px;
            display: inline-block;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-light);
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-item .faq-q:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item .faq-q i {
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-section);
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-soft);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 4px 20px var(--accent-glow);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px var(--accent-glow);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(245, 166, 35, 0.06);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== 统计数据 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 28px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 6px;
        }
        .stat-item .stat-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 8px;
            opacity: 0.7;
        }

        /* ===== 分隔线 ===== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
            margin: 20px auto;
        }
        .divider-left {
            margin: 16px 0 24px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .footer-brand .logo span {
            color: var(--accent);
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            max-width: 360px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-soft);
            font-size: 1.1rem;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 4px 16px var(--accent-glow);
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-light);
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition), padding var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-links a::before {
            content: '›';
            color: var(--accent);
            font-weight: 700;
            font-size: 1.1rem;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--accent);
        }
        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(10, 14, 26, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 8px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 20px;
                width: 100%;
                text-align: left;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.nav-cta {
                margin-left: 0;
                margin-top: 4px;
                text-align: center;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }

            .page-hero {
                padding: 120px 0 60px;
                min-height: 300px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .section {
                padding: 56px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }

            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .page-hero .hero-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
            .card {
                padding: 20px 18px;
            }
            .card-cover .cover-body {
                padding: 16px 16px 20px;
            }
            .step-item {
                padding: 20px 12px;
            }
        }

        /* ===== 工具类 ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== 选中颜色 ===== */
        ::selection {
            background: var(--accent);
            color: var(--primary-dark);
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --c-primary: #c9a84c;
  --c-primary-light: #e8d08a;
  --c-primary-dark: #a8882e;
  --c-secondary: #6b5b8a;
  --c-bg: #0f0f1a;
  --c-bg-alt: #1a1a2e;
  --c-surface: rgba(255,255,255,0.04);
  --c-surface-hover: rgba(255,255,255,0.08);
  --c-text: #f0ece4;
  --c-text-secondary: #a09888;
  --c-text-muted: #706858;
  --c-border: rgba(201,168,76,0.15);
  --c-border-light: rgba(201,168,76,0.08);
  --c-overlay: rgba(0,0,0,0.6);
  --c-glass-bg: rgba(15,15,26,0.75);
  --c-glass-border: rgba(201,168,76,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.3);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.4);
  --shadow-glow: 0 4px 24px rgba(201,168,76,0.08);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-width: 1200px;
  --nav-height: 72px;
}
/* ===== Reset / Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--c-bg);color:var(--c-text);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--c-primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--c-primary-light)}
img{max-width:100%;height:auto;display:block}
button,.btn{cursor:pointer;font-family:inherit;border:none;background:none;transition:var(--transition)}
input,textarea{font-family:inherit;outline:none;transition:var(--transition)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--c-text)}
h1{font-size:clamp(1.8rem,4.5vw,3.2rem)}
h2{font-size:clamp(1.4rem,3.2vw,2.2rem)}
h3{font-size:clamp(1.1rem,2.4vw,1.5rem)}
h4{font-size:clamp(1rem,1.8vw,1.2rem)}
p{margin-bottom:1rem;color:var(--c-text-secondary)}
::selection{background:var(--c-primary);color:var(--c-bg)}
/* ===== Container ===== */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}
/* ===== Header / 透明玻璃沉浸导航 ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-height);background:var(--c-glass-bg);backdrop-filter:blur(20px) saturate(1.3);-webkit-backdrop-filter:blur(20px) saturate(1.3);border-bottom:1px solid var(--c-glass-border);transition:var(--transition)}
.header.scrolled{background:rgba(15,15,26,0.92);backdrop-filter:blur(28px) saturate(1.5);-webkit-backdrop-filter:blur(28px) saturate(1.5);box-shadow:0 4px 24px rgba(0,0,0,0.3)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;color:var(--c-text);letter-spacing:0.5px;font-family:var(--font-serif)}
.logo i{color:var(--c-primary);font-size:1.2rem}
.logo span{color:var(--c-primary)}
.logo:hover{color:var(--c-text);opacity:0.9}
.nav{display:flex;align-items:center;gap:8px}
.nav a{position:relative;padding:8px 18px;font-size:0.92rem;color:var(--c-text-secondary);border-radius:var(--radius-sm);font-weight:500;letter-spacing:0.3px;transition:var(--transition)}
.nav a:hover{color:var(--c-text);background:var(--c-surface)}
.nav a.active{color:var(--c-primary);background:rgba(201,168,76,0.08)}
.nav a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--c-primary);border-radius:2px}
.nav a.nav-cta{background:var(--c-primary);color:var(--c-bg);padding:8px 22px;border-radius:var(--radius-sm);font-weight:600}
.nav a.nav-cta:hover{background:var(--c-primary-light);color:var(--c-bg);transform:translateY(-1px);box-shadow:0 4px 16px rgba(201,168,76,0.2)}
.nav a.nav-cta i{margin-right:6px}
.menu-toggle{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;background:none;border:none}
.menu-toggle span{width:24px;height:2px;background:var(--c-text);border-radius:2px;transition:var(--transition)}
.menu-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
@media(max-width:768px){
  .menu-toggle{display:flex}
  .nav{position:fixed;top:var(--nav-height);left:0;right:0;background:var(--c-glass-bg);backdrop-filter:blur(28px);-webkit-backdrop-filter:blur(28px);flex-direction:column;padding:16px 24px 24px;gap:4px;border-bottom:1px solid var(--c-glass-border);transform:translateY(-110%);opacity:0;pointer-events:none;transition:var(--transition)}
  .nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav a{width:100%;padding:12px 16px;text-align:center;font-size:1rem}
  .nav a.active::after{display:none}
  .nav a.nav-cta{margin-top:8px;text-align:center}
}
/* ===== Page Banner ===== */
.page-banner{position:relative;padding:140px 0 80px;margin-top:0;background:var(--c-bg-alt);overflow:hidden;min-height:320px;display:flex;align-items:center}
.page-banner .bg-layer{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.35;filter:grayscale(0.3)}
.page-banner .overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,15,26,0.85) 0%,rgba(26,26,46,0.65) 50%,rgba(15,15,26,0.85) 100%)}
.page-banner .container{position:relative;z-index:2;text-align:center}
.page-banner .breadcrumb{display:flex;justify-content:center;align-items:center;gap:8px;margin-bottom:20px;font-size:0.85rem;color:var(--c-text-muted)}
.page-banner .breadcrumb a{color:var(--c-text-muted)}
.page-banner .breadcrumb a:hover{color:var(--c-primary)}
.page-banner .breadcrumb .sep{color:var(--c-text-muted);font-size:0.7rem}
.page-banner .breadcrumb .current{color:var(--c-primary)}
.page-banner h1{max-width:800px;margin:0 auto 16px;font-family:var(--font-serif);color:var(--c-text);text-shadow:0 2px 20px rgba(0,0,0,0.3)}
.page-banner .meta-wrap{display:flex;justify-content:center;align-items:center;gap:16px 28px;flex-wrap:wrap;font-size:0.9rem;color:var(--c-text-secondary)}
.page-banner .meta-wrap .cat{display:inline-block;padding:3px 14px;background:rgba(201,168,76,0.12);color:var(--c-primary);border-radius:20px;font-size:0.8rem;font-weight:500;border:1px solid rgba(201,168,76,0.2)}
.page-banner .meta-wrap .date{display:flex;align-items:center;gap:6px}
.page-banner .meta-wrap .date i{color:var(--c-primary);font-size:0.8rem}
.page-banner .desc{max-width:640px;margin:20px auto 0;color:var(--c-text-secondary);font-size:1.05rem;line-height:1.6}
/* ===== Main Content ===== */
.main-content{padding:60px 0 80px}
.main-content .content-inner{max-width:820px;margin:0 auto}
.main-content .article-body{background:var(--c-surface);border:1px solid var(--c-border-light);border-radius:var(--radius-lg);padding:48px 56px;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.main-content .article-body h2,.main-content .article-body h3,.main-content .article-body h4{margin-top:1.8em;margin-bottom:0.6em;font-family:var(--font-serif);color:var(--c-text)}
.main-content .article-body h2:first-child,.main-content .article-body h3:first-child{margin-top:0}
.main-content .article-body p{line-height:1.9;margin-bottom:1.2em;color:var(--c-text-secondary);font-size:1.02rem}
.main-content .article-body a{color:var(--c-primary);border-bottom:1px solid rgba(201,168,76,0.2)}
.main-content .article-body a:hover{border-bottom-color:var(--c-primary)}
.main-content .article-body ul,.main-content .article-body ol{padding-left:1.5em;margin-bottom:1.2em;color:var(--c-text-secondary)}
.main-content .article-body ul li{list-style:disc;margin-bottom:0.4em}
.main-content .article-body ol li{list-style:decimal;margin-bottom:0.4em}
.main-content .article-body blockquote{border-left:3px solid var(--c-primary);padding:16px 24px;margin:1.5em 0;background:rgba(201,168,76,0.04);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--c-text-secondary);font-style:italic}
.main-content .article-body blockquote p:last-child{margin-bottom:0}
.main-content .article-body img{border-radius:var(--radius-md);margin:1.5em auto;box-shadow:var(--shadow-sm)}
.main-content .article-body pre{background:var(--c-bg-alt);padding:20px 24px;border-radius:var(--radius-md);overflow-x:auto;margin:1.5em 0;border:1px solid var(--c-border-light);font-size:0.9rem}
.main-content .article-body code{font-family:'Cascadia Code','Fira Code',monospace;font-size:0.9em}
.main-content .article-body hr{margin:2em 0;border:none;height:1px;background:var(--c-border-light)}
@media(max-width:768px){
  .main-content .article-body{padding:28px 20px;border-radius:var(--radius-md)}
  .main-content .content-inner{padding:0}
}
/* ===== 文章标签/分享 ===== */
.article-footer-bar{max-width:820px;margin:32px auto 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;padding:20px 0;border-top:1px solid var(--c-border-light)}
.article-footer-bar .tags{display:flex;gap:8px;flex-wrap:wrap}
.article-footer-bar .tags .tag{padding:4px 14px;background:var(--c-surface);border:1px solid var(--c-border-light);border-radius:20px;font-size:0.8rem;color:var(--c-text-secondary);transition:var(--transition)}
.article-footer-bar .tags .tag:hover{background:var(--c-surface-hover);color:var(--c-primary);border-color:rgba(201,168,76,0.2)}
.article-footer-bar .share{display:flex;align-items:center;gap:10px;font-size:0.85rem;color:var(--c-text-muted)}
.article-footer-bar .share a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--c-surface);border:1px solid var(--c-border-light);color:var(--c-text-secondary);transition:var(--transition)}
.article-footer-bar .share a:hover{background:var(--c-primary);color:var(--c-bg);border-color:var(--c-primary);transform:translateY(-2px)}
/* ===== 相关推荐 ===== */
.related-section{padding:60px 0;background:var(--c-bg-alt);border-top:1px solid var(--c-border-light)}
.related-section .section-title{text-align:center;margin-bottom:40px;font-family:var(--font-serif)}
.related-section .section-title span{color:var(--c-primary)}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.related-card{background:var(--c-surface);border:1px solid var(--c-border-light);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(201,168,76,0.2)}
.related-card .card-img{height:180px;background:var(--c-bg-alt);overflow:hidden;position:relative}
.related-card .card-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.related-card:hover .card-img img{transform:scale(1.05)}
.related-card .card-body{padding:20px 20px 24px;flex:1;display:flex;flex-direction:column}
.related-card .card-body .card-cat{display:inline-block;padding:2px 12px;background:rgba(201,168,76,0.1);color:var(--c-primary);border-radius:20px;font-size:0.75rem;font-weight:500;margin-bottom:10px;align-self:flex-start}
.related-card .card-body h4{font-size:1rem;font-weight:600;margin-bottom:8px;line-height:1.4}
.related-card .card-body h4 a{color:var(--c-text)}
.related-card .card-body h4 a:hover{color:var(--c-primary)}
.related-card .card-body p{font-size:0.88rem;color:var(--c-text-secondary);flex:1;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .card-body .card-date{font-size:0.78rem;color:var(--c-text-muted);display:flex;align-items:center;gap:6px}
@media(max-width:768px){
  .related-grid{grid-template-columns:1fr}
  .related-card .card-img{height:200px}
}
/* ===== CTA ===== */
.cta-section{padding:80px 0;background:var(--c-bg);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:0.06;filter:grayscale(0.4)}
.cta-section .container{position:relative;z-index:2;text-align:center}
.cta-section h2{font-family:var(--font-serif);margin-bottom:16px}
.cta-section h2 span{color:var(--c-primary)}
.cta-section p{max-width:560px;margin:0 auto 32px;color:var(--c-text-secondary);font-size:1.05rem}
.cta-section .cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-section .cta-btns .btn-primary{display:inline-flex;align-items:center;gap:10px;padding:14px 36px;background:var(--c-primary);color:var(--c-bg);border-radius:var(--radius-sm);font-size:1rem;font-weight:600;letter-spacing:0.5px;transition:var(--transition)}
.cta-section .cta-btns .btn-primary:hover{background:var(--c-primary-light);transform:translateY(-2px);box-shadow:0 8px 28px rgba(201,168,76,0.2)}
.cta-section .cta-btns .btn-secondary{display:inline-flex;align-items:center;gap:10px;padding:14px 36px;background:transparent;color:var(--c-text);border:1px solid var(--c-border);border-radius:var(--radius-sm);font-size:1rem;font-weight:500;transition:var(--transition)}
.cta-section .cta-btns .btn-secondary:hover{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-2px)}
/* ===== Error 状态 ===== */
.error-block{text-align:center;padding:80px 20px;max-width:600px;margin:0 auto}
.error-block .error-icon{font-size:4rem;color:var(--c-text-muted);margin-bottom:24px;opacity:0.5}
.error-block h2{font-family:var(--font-serif);margin-bottom:16px;color:var(--c-text)}
.error-block p{color:var(--c-text-secondary);font-size:1.05rem;margin-bottom:32px}
.error-block .btn-back{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;background:var(--c-primary);color:var(--c-bg);border-radius:var(--radius-sm);font-weight:600;transition:var(--transition)}
.error-block .btn-back:hover{background:var(--c-primary-light);transform:translateY(-2px);box-shadow:0 8px 28px rgba(201,168,76,0.15)}
/* ===== Footer ===== */
.footer{background:var(--c-bg-alt);border-top:1px solid var(--c-border-light);padding:60px 0 0;position:relative}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-primary),transparent);opacity:0.15}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--c-border-light)}
.footer-brand .logo{font-size:1.3rem;margin-bottom:16px}
.footer-brand p{font-size:0.9rem;color:var(--c-text-secondary);line-height:1.7;margin-bottom:20px;max-width:320px}
.footer-social{display:flex;gap:12px}
.footer-social a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--c-surface);border:1px solid var(--c-border-light);color:var(--c-text-secondary);transition:var(--transition)}
.footer-social a:hover{background:var(--c-primary);color:var(--c-bg);border-color:var(--c-primary);transform:translateY(-2px)}
.footer h4{font-size:0.95rem;font-weight:600;margin-bottom:16px;color:var(--c-text);letter-spacing:0.3px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:0.88rem;color:var(--c-text-secondary);transition:var(--transition)}
.footer-links a:hover{color:var(--c-primary);padding-left:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:24px 0;flex-wrap:wrap;gap:12px;font-size:0.82rem;color:var(--c-text-muted)}
.footer-bottom a{color:var(--c-text-secondary)}
.footer-bottom a:hover{color:var(--c-primary)}
@media(max-width:968px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
}
/* ===== 响应式补充 ===== */
@media(max-width:768px){
  .page-banner{padding:120px 0 60px;min-height:260px}
  .page-banner h1{font-size:1.5rem}
  .page-banner .meta-wrap{gap:12px 16px;font-size:0.82rem}
  .page-banner .desc{font-size:0.92rem}
  .main-content{padding:40px 0 60px}
  .article-footer-bar{flex-direction:column;align-items:flex-start}
  .cta-section{padding:60px 0}
  .cta-section .cta-btns .btn-primary,.cta-section .cta-btns .btn-secondary{width:100%;justify-content:center}
}
@media(max-width:520px){
  .page-banner{padding:100px 0 40px;min-height:200px}
  .page-banner h1{font-size:1.25rem}
  .main-content .article-body{padding:20px 16px}
  .related-card .card-img{height:180px}
}
/* ===== 滚动条 ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--c-bg)}
::-webkit-scrollbar-thumb{background:var(--c-border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--c-primary-dark)}
/* ===== 选中高亮 ===== */
::selection{background:rgba(201,168,76,0.25);color:var(--c-text)}