/* roulang page: index */
:root {
  --primary: #0f0f1a;
  --primary-light: #1a1a30;
  --primary-dark: #080810;
  --secondary: #f0a500;
  --secondary-light: #ffc440;
  --secondary-dark: #c78500;
  --accent: #e67e22;
  --accent-light: #f09840;
  --bg: #0a0a15;
  --bg-card: #151528;
  --bg-section: #0f0f20;
  --bg-section-alt: #12122a;
  --text: #ffffff;
  --text-muted: #9090a8;
  --text-dim: #606080;
  --border: #2a2a50;
  --border-light: #3a3a60;
  --border-glow: rgba(240, 165, 0, 0.25);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 40px rgba(240, 165, 0, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html { scroll-behavior: smooth; }

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

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

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; font-size: inherit; }

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

.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--secondary);
  background: rgba(240, 165, 0, 0.10);
  padding: 6px 18px;
  border-radius: 100px;
  border: 1px solid rgba(240, 165, 0, 0.20);
  margin-bottom: 16px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(240, 165, 0, 0.12);
  color: var(--secondary);
  border: 1px solid rgba(240, 165, 0, 0.20);
  letter-spacing: 0.5px;
}

.badge-rare {
  background: linear-gradient(135deg, rgba(240,165,0,0.20), rgba(230,126,34,0.20));
  border-color: rgba(240,165,0,0.35);
  color: var(--secondary-light);
  box-shadow: 0 0 20px rgba(240,165,0,0.08);
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 100px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #0a0a15;
  box-shadow: 0 4px 24px rgba(240, 165, 0, 0.30);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(240, 165, 0, 0.45);
  color: #0a0a15;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border-light);
}
.btn-secondary:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(240, 165, 0, 0.06);
  transform: translateY(-2px);
}

.btn-glow {
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #0a0a15;
  box-shadow: 0 0 40px rgba(240, 165, 0, 0.25), 0 4px 24px rgba(240, 165, 0, 0.30);
  position: relative;
  overflow: hidden;
}
.btn-glow::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--secondary), var(--accent), var(--secondary));
  border-radius: inherit;
  z-index: -1;
  opacity: 0.4;
  filter: blur(12px);
}
.btn-glow:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 60px rgba(240, 165, 0, 0.35), 0 8px 32px rgba(240, 165, 0, 0.40);
  color: #0a0a15;
}

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(10, 10, 21, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(42, 42, 80, 0.5);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 10, 21, 0.95);
  border-bottom-color: rgba(42, 42, 80, 0.8);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo:hover { color: var(--secondary); }
.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #0a0a15;
  font-weight: 900;
  flex-shrink: 0;
}

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

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 100px;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
}
.nav-link:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.nav-link.active {
  color: var(--secondary);
  background: rgba(240, 165, 0, 0.10);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--secondary);
  border-radius: 100px;
}

.nav-cta {
  margin-left: 16px;
}
.nav-cta .btn {
  padding: 10px 24px;
  font-size: 14px;
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 22px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}
.mobile-toggle:hover { background: rgba(255,255,255,0.06); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: var(--primary-dark);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.35;
  mix-blend-mode: overlay;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(15,15,26,0.20) 0%, var(--primary-dark) 70%);
}

.hero-glow {
  position: absolute;
  top: -30%;
  right: -20%;
  width: 70%;
  height: 80%;
  background: radial-gradient(circle, rgba(240,165,0,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-top: 40px;
  padding-bottom: 60px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--secondary);
  background: rgba(240,165,0,0.10);
  border: 1px solid rgba(240,165,0,0.20);
  padding: 8px 22px;
  border-radius: 100px;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-title {
  font-size: 60px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--secondary), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

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

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid rgba(42, 42, 80, 0.4);
}

.hero-stat-item {
  text-align: center;
}

.hero-stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}
.hero-stat-number .num-highlight {
  color: var(--secondary);
}

.hero-stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== Features ===== */
.features {
  background: var(--bg-section);
  position: relative;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  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(--secondary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  border-color: rgba(240,165,0,0.25);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  background: rgba(240,165,0,0.10);
  color: var(--secondary);
  border: 1px solid rgba(240,165,0,0.15);
}

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

.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Categories ===== */
.categories {
  background: var(--bg);
}

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

.category-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  border-color: rgba(240,165,0,0.25);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.category-card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.category-card-body {
  padding: 28px 28px 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.category-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  background: rgba(240,165,0,0.10);
  padding: 4px 14px;
  border-radius: 100px;
  width: fit-content;
  margin-bottom: 12px;
  border: 1px solid rgba(240,165,0,0.15);
}

.category-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.category-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.category-card .btn {
  align-self: flex-start;
  padding: 10px 24px;
  font-size: 14px;
}

/* ===== News List ===== */
.news {
  background: var(--bg-section);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  transition: var(--transition);
  text-decoration: none;
}
.news-item:hover {
  border-color: rgba(240,165,0,0.20);
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

.news-item-category {
  font-size: 12px;
  font-weight: 600;
  color: var(--secondary);
  background: rgba(240,165,0,0.10);
  padding: 4px 14px;
  border-radius: 100px;
  white-space: nowrap;
  border: 1px solid rgba(240,165,0,0.12);
  flex-shrink: 0;
}

.news-item-title {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item:hover .news-item-title { color: var(--secondary); }

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

.news-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  font-size: 16px;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.news-more {
  text-align: center;
  margin-top: 36px;
}

/* ===== Stats ===== */
.stats-section {
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -20%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, rgba(240,165,0,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
  z-index: 1;
}

.stat-card {
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  transition: var(--transition);
}
.stat-card:hover {
  border-color: rgba(240,165,0,0.20);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-card-icon {
  font-size: 32px;
  color: var(--secondary);
  margin-bottom: 16px;
}

.stat-card-number {
  font-size: 40px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-card-number .num-highlight {
  color: var(--secondary);
}

.stat-card-label {
  font-size: 15px;
  color: var(--text-muted);
}

/* ===== Steps ===== */
.steps {
  background: var(--bg-section);
}

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

.steps-grid::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--border), var(--secondary), var(--border));
  opacity: 0.3;
}

.step-card {
  text-align: center;
  position: relative;
  z-index: 2;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  transition: var(--transition);
}
.step-card:hover {
  border-color: rgba(240,165,0,0.20);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #0a0a15;
  box-shadow: 0 0 30px rgba(240,165,0,0.20);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

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

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

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(240,165,0,0.15); }

.faq-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 28px;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}
.faq-item-header:hover { background: rgba(255,255,255,0.02); }

.faq-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

.faq-item-icon {
  font-size: 16px;
  color: var(--text-muted);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-item-icon { transform: rotate(180deg); color: var(--secondary); }

.faq-item-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 28px;
}
.faq-item.open .faq-item-body {
  max-height: 300px;
  padding: 0 28px 20px;
}

.faq-item-body p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta {
  background: var(--bg-section);
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08;
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-content .section-title {
  font-size: 38px;
}

.cta-content .section-subtitle {
  margin-bottom: 32px;
}

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

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark);
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}

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

.footer-brand .logo {
  margin-bottom: 14px;
  font-size: 20px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 16px;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.footer-social a:hover {
  background: rgba(240,165,0,0.10);
  color: var(--secondary);
  border-color: rgba(240,165,0,0.20);
  transform: translateY(-2px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 46px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 28px; }
  .section-subtitle { font-size: 16px; }

  .mobile-toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 21, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link { width: 100%; padding: 12px 20px; }
  .nav-link.active::after { display: none; }
  .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
  .nav-cta .btn { width: 100%; justify-content: center; }

  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 17px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .hero-stat-number { font-size: 28px; }

  .features-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }

  .stat-card { padding: 24px 16px; }
  .stat-card-number { font-size: 30px; }

  .news-item { flex-wrap: wrap; gap: 12px; padding: 16px 20px; }
  .news-item-title { -webkit-line-clamp: 2; }

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

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 28px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-stats { gap: 16px; }
  .hero-stat-item { flex: 1; min-width: 80px; }
  .hero-stat-number { font-size: 22px; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card-number { font-size: 24px; }

  .section-title { font-size: 24px; }
  .cta-content .section-title { font-size: 26px; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
      --primary: #e8542e;
      --primary-dark: #d04420;
      --primary-light: #fdf0eb;
      --secondary: #2b3b4b;
      --secondary-light: #3a5068;
      --accent: #f5a623;
      --bg: #f7f8fa;
      --bg-card: #ffffff;
      --bg-dark: #1a1f2b;
      --bg-footer: #0f1219;
      --text: #1f2937;
      --text-light: #4b5563;
      --text-dim: #9ca3af;
      --border: #e5e7eb;
      --radius: 16px;
      --radius-sm: 10px;
      --radius-xs: 6px;
      --shadow: 0 4px 24px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
      --shadow-nav: 0 2px 20px rgba(0,0,0,0.06);
      --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
      --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);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-dark); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul, ol { list-style: none; }
    button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== 导航 ===== */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(229,231,235,0.5);
      box-shadow: var(--shadow-nav);
      height: var(--nav-height);
    }
    .header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 24px;
      font-weight: 800;
      color: var(--text);
      letter-spacing: -0.5px;
    }
    .logo:hover { color: var(--primary); }
    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0;
    }
    .nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 10px 18px;
      border-radius: var(--radius-xs);
      font-size: 15px;
      font-weight: 500;
      color: var(--text-light);
      transition: var(--transition);
      position: relative;
    }
    .nav-link i { font-size: 14px; }
    .nav-link:hover { color: var(--primary); background: var(--primary-light); }
    .nav-link.active {
      color: var(--primary);
      background: var(--primary-light);
      font-weight: 600;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 4px;
      left: 50%;
      transform: translateX(-50%);
      width: 20px;
      height: 3px;
      background: var(--primary);
      border-radius: 4px;
    }
    .nav-cta { margin-left: 12px; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-xs);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: none;
      line-height: 1.2;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(232,84,46,0.30);
    }
    .btn-primary:hover { background: var(--primary-dark); box-shadow: 0 6px 20px rgba(232,84,46,0.40); transform: translateY(-1px); color: #fff; }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
    }
    .btn-outline:hover { background: var(--primary); color: #fff; }
    .btn-sm { padding: 8px 18px; font-size: 13px; }

    /* 移动端菜单按钮 */
    .menu-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--text); cursor: pointer; padding: 6px; }

    /* ===== 文章 Banner ===== */
    .article-banner {
      margin-top: var(--nav-height);
      padding: 80px 0 60px;
      background: linear-gradient(135deg, #1a1f2b 0%, #2b3b4b 100%);
      position: relative;
      overflow: hidden;
      min-height: 320px;
      display: flex;
      align-items: center;
    }
    .article-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      opacity: 0.15;
      mix-blend-mode: overlay;
    }
    .article-banner .container { position: relative; z-index: 2; }
    .article-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: rgba(255,255,255,0.6);
      margin-bottom: 20px;
    }
    .article-breadcrumb a { color: rgba(255,255,255,0.7); }
    .article-breadcrumb a:hover { color: #fff; }
    .article-breadcrumb .sep { color: rgba(255,255,255,0.4); }
    .article-banner h1 {
      font-size: 36px;
      font-weight: 800;
      color: #fff;
      line-height: 1.3;
      max-width: 800px;
      margin-bottom: 16px;
    }
    .article-meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px 24px;
      color: rgba(255,255,255,0.7);
      font-size: 14px;
    }
    .article-meta-bar .tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(232,84,46,0.25);
      color: #fdd9c8;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 500;
    }
    .article-meta-bar i { margin-right: 6px; }

    /* ===== 正文区域 ===== */
    .article-main {
      padding: 60px 0 80px;
    }
    .article-layout {
      display: grid;
      grid-template-columns: 1fr 320px;
      gap: 48px;
    }
    .article-content {
      background: var(--bg-card);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 48px;
      font-size: 16px;
      line-height: 1.9;
      color: var(--text);
    }
    .article-content h2 {
      font-size: 24px;
      font-weight: 700;
      margin: 40px 0 16px;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--primary-light);
      color: var(--text);
    }
    .article-content h3 {
      font-size: 20px;
      font-weight: 600;
      margin: 32px 0 12px;
      color: var(--text);
    }
    .article-content p {
      margin-bottom: 18px;
    }
    .article-content ul, .article-content ol {
      margin: 16px 0 20px;
      padding-left: 24px;
    }
    .article-content ul li {
      list-style: disc;
      margin-bottom: 8px;
    }
    .article-content ol li {
      list-style: decimal;
      margin-bottom: 8px;
    }
    .article-content img {
      border-radius: var(--radius-sm);
      margin: 24px 0;
      box-shadow: var(--shadow);
    }
    .article-content blockquote {
      margin: 24px 0;
      padding: 20px 24px;
      background: var(--primary-light);
      border-left: 4px solid var(--primary);
      border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
      color: var(--text-light);
      font-style: normal;
    }
    .article-content blockquote p:last-child { margin-bottom: 0; }
    .article-content .highlight-box {
      background: linear-gradient(135deg, #f0f4ff, #e8f0fe);
      border-radius: var(--radius-sm);
      padding: 24px 28px;
      margin: 24px 0;
      border: 1px solid #d0dff8;
    }
    .article-nav {
      display: flex;
      justify-content: space-between;
      margin-top: 48px;
      padding-top: 32px;
      border-top: 1px solid var(--border);
      gap: 16px;
    }
    .article-nav a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 14px 22px;
      border-radius: var(--radius-sm);
      background: var(--bg);
      border: 1px solid var(--border);
      font-size: 14px;
      font-weight: 500;
      color: var(--text-light);
      transition: var(--transition);
      flex: 1;
    }
    .article-nav a:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

    /* ===== 侧边栏 ===== */
    .article-sidebar {
      display: flex;
      flex-direction: column;
      gap: 32px;
    }
    .sidebar-card {
      background: var(--bg-card);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 28px;
    }
    .sidebar-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 18px;
      padding-bottom: 12px;
      border-bottom: 2px solid var(--primary-light);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .sidebar-card h3 i { color: var(--primary); }
    .sidebar-list li {
      padding: 10px 0;
      border-bottom: 1px solid var(--border);
    }
    .sidebar-list li:last-child { border-bottom: none; }
    .sidebar-list a {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: var(--text);
      font-size: 14px;
      line-height: 1.5;
    }
    .sidebar-list a:hover { color: var(--primary); }
    .sidebar-list .thumb {
      width: 60px;
      height: 60px;
      border-radius: var(--radius-xs);
      object-fit: cover;
      flex-shrink: 0;
      background: var(--bg);
    }
    .sidebar-list .info { flex: 1; }
    .sidebar-list .info .title { font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .sidebar-list .info .date { font-size: 12px; color: var(--text-dim); margin-top: 4px; }
    .sidebar-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .sidebar-tags a {
      display: inline-block;
      padding: 6px 16px;
      background: var(--bg);
      border-radius: 20px;
      font-size: 13px;
      color: var(--text-light);
      border: 1px solid var(--border);
    }
    .sidebar-tags a:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
    .sidebar-cta {
      background: linear-gradient(135deg, var(--primary) 0%, #d04420 100%);
      color: #fff;
      border-radius: var(--radius);
      padding: 32px 28px;
      text-align: center;
    }
    .sidebar-cta h4 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
    .sidebar-cta p { font-size: 14px; opacity: 0.9; margin-bottom: 20px; }
    .sidebar-cta .btn { background: #fff; color: var(--primary); }
    .sidebar-cta .btn:hover { background: rgba(255,255,255,0.9); transform: translateY(-1px); }

    /* ===== 文章未找到 ===== */
    .not-found {
      text-align: center;
      padding: 80px 24px;
      background: var(--bg-card);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .not-found i { font-size: 64px; color: var(--text-dim); margin-bottom: 24px; display: block; }
    .not-found h2 { font-size: 28px; margin-bottom: 16px; }
    .not-found p { color: var(--text-light); margin-bottom: 24px; }

    /* ===== 页脚 ===== */
    .footer {
      background: var(--bg-footer);
      color: rgba(255,255,255,0.7);
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand .logo { color: #fff; margin-bottom: 16px; }
    .footer-brand .logo .logo-icon { background: var(--primary); }
    .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 360px; }
    .footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 14px; }
    .footer-col ul li a:hover { color: #fff; }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 28px;
      border-top: 1px solid rgba(255,255,255,0.08);
      font-size: 13px;
      color: rgba(255,255,255,0.4);
    }
    .footer-social { display: flex; gap: 14px; }
    .footer-social a { color: rgba(255,255,255,0.5); font-size: 20px; }
    .footer-social a:hover { color: var(--primary); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .article-layout { grid-template-columns: 1fr; }
      .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
      .sidebar-cta { grid-column: 1 / -1; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .menu-toggle { display: block; }
      .nav {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(18px);
        flex-direction: column;
        padding: 16px 24px 24px;
        gap: 4px;
        box-shadow: 0 20px 40px rgba(0,0,0,0.10);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        border-bottom: 1px solid var(--border);
      }
      .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
      .nav-link { padding: 14px 18px; width: 100%; border-radius: var(--radius-xs); }
      .nav-link.active::after { display: none; }
      .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
      .nav-cta .btn { width: 100%; text-align: center; }
      .article-banner { padding: 60px 0 40px; min-height: 240px; }
      .article-banner h1 { font-size: 26px; }
      .article-content { padding: 28px 20px; }
      .article-content h2 { font-size: 20px; }
      .article-content h3 { font-size: 18px; }
      .article-nav { flex-direction: column; }
      .article-sidebar { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }
    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .article-banner h1 { font-size: 22px; }
      .article-meta-bar { font-size: 13px; gap: 10px; }
      .article-content { padding: 20px 16px; font-size: 15px; }
      .sidebar-card { padding: 20px; }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #457b9d;
            --secondary-dark: #1d3557;
            --accent: #f4a261;
            --accent-light: #e9c46a;
            --bg-body: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #232340;
            --bg-dark: #0a0a14;
            --bg-section: #12121f;
            --text-white: #ffffff;
            --text-light: #e8e8f0;
            --text-body: #c0c0d0;
            --text-dim: #8888a0;
            --text-muted: #6a6a80;
            --border-color: #2a2a45;
            --border-light: #3a3a55;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --font-title: 'Inter', 'Noto Sans SC', 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;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-body);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Logo ===== */
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            transition: opacity var(--transition);
            flex-shrink: 0;
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--text-white);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
            letter-spacing: 0;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 20px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
        }

        /* ===== Header / Nav ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

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

        .nav-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dim);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 15px;
        }
        .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: var(--text-white);
            background: rgba(230, 57, 70, 0.15);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
        }

        .nav-cta {
            margin-left: 12px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.3;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(230, 57, 70, 0.2);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-light);
            border: 1px solid var(--border-light);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            color: var(--text-white);
            border-color: var(--text-dim);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary-light);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-lg {
            padding: 16px 38px;
            font-size: 17px;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a0a0f 50%, var(--bg-body) 100%);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 15, 26, 0.85) 0%, rgba(15, 15, 26, 0.4) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .page-banner p {
            font-size: 18px;
            color: var(--text-dim);
            max-width: 680px;
            line-height: 1.7;
        }
        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(230, 57, 70, 0.2);
            color: var(--primary-light);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            border: 1px solid rgba(230, 57, 70, 0.25);
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 44px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .page-banner p {
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner .banner-tag {
                font-size: 12px;
                padding: 4px 12px;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-darker {
            background: var(--bg-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-dim);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .section-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
            border: 1px solid rgba(230, 57, 70, 0.15);
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 36px;
            }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        @media (max-width: 1024px) {
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .card-grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
            background: var(--bg-dark);
        }
        .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(69, 123, 157, 0.15);
            color: var(--secondary);
            padding: 3px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            width: fit-content;
            border: 1px solid rgba(69, 123, 157, 0.2);
        }
        .card-tag.hot {
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-light);
            border-color: rgba(230, 57, 70, 0.2);
        }
        .card-tag.new {
            background: rgba(244, 162, 97, 0.12);
            color: var(--accent);
            border-color: rgba(244, 162, 97, 0.2);
        }
        .card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.6;
            flex: 1;
        }
        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }
        .card-footer .meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-footer .meta i {
            font-size: 13px;
        }
        .card-footer .btn {
            padding: 6px 16px;
            font-size: 13px;
        }

        @media (max-width: 520px) {
            .card-body {
                padding: 16px 18px 20px;
            }
            .card h3 {
                font-size: 16px;
            }
        }

        /* ===== Guide List (图文列表) ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .guide-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .guide-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .guide-item .num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 12px;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.25);
        }
        .guide-item .content {
            flex: 1;
        }
        .guide-item .content h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .guide-item .content p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.6;
        }
        .guide-item .content .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 10px;
        }
        .guide-item .content .tags span {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            padding: 2px 12px;
            border-radius: 10px;
            font-size: 12px;
            border: 1px solid var(--border-color);
        }
        .guide-item .guide-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            background: var(--bg-dark);
        }

        @media (max-width: 768px) {
            .guide-item {
                flex-direction: column;
                padding: 18px;
                gap: 16px;
            }
            .guide-item .guide-thumb {
                width: 100%;
                height: 160px;
                order: -1;
            }
            .guide-item .num {
                width: 40px;
                height: 40px;
                font-size: 17px;
            }
            .guide-item .content h4 {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .guide-item .guide-thumb {
                height: 140px;
            }
        }

        /* ===== Tags Cloud ===== */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tags-cloud a {
            display: inline-block;
            padding: 8px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dim);
            transition: all var(--transition);
        }
        .tags-cloud a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.25);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question i {
            font-size: 18px;
            color: var(--text-dim);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a0a0f 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: var(--text-dim);
            max-width: 540px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-item:hover {
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-num {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-item .stat-num span {
            color: var(--primary);
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-dim);
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .stat-item .stat-num {
                font-size: 30px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-dim);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0 32px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-dim);
            font-size: 18px;
            transition: all var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1/-1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer {
                padding: 40px 0 0;
            }
        }

        /* ===== Mobile Nav Toggle ===== */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-light);
            border-radius: 3px;
            transition: all 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);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15, 15, 26, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 8px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-link {
                width: 100%;
                padding: 12px 18px;
                font-size: 16px;
                justify-content: flex-start;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(230, 57, 70, 0.15);
                border-left: 3px solid var(--primary);
                border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 10px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .nav {
                padding: 16px 16px 24px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 16px 0 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-dim);
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--text-light);
        }

        /* ===== Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mt-3 {
            margin-top: 40px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .mb-3 {
            margin-bottom: 40px;
        }
        .gap-1 {
            gap: 12px;
        }
        .gap-2 {
            gap: 24px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .fw-700 {
            font-weight: 700;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }