/* roulang page: index */
:root {
  --primary: #c8102e;
  --primary-dark: #8d0b20;
  --primary-light: #fdecef;
  --accent: #d4a853;
  --accent-light: #faf4e8;
  --bg: #f8f7f4;
  --text: #1a1a2e;
  --muted: #6b7280;
  --border: #e5e7eb;
  --white: #ffffff;
  --dark: #0f0f1a;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  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: color var(--transition); }
a:hover { color: var(--primary-dark); }

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

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

.container { max-width: 1200px; padding-left: 1.25rem; padding-right: 1.25rem; }

.section { padding: 100px 0; position: relative; }

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

.section-header { max-width: 720px; margin: 0 auto 56px; text-align: center; }

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--text);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
}

.section-bar {
  width: 48px;
  height: 4px;
  border-radius: 2px;
  background: var(--accent);
  margin: 16px auto 20px;
}

.btn {
  border-radius: 50rem;
  padding: 0.65rem 1.5rem;
  font-weight: 600;
  border: 2px solid transparent;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.btn i { font-size: 0.9em; }

.btn:focus, .btn:focus-visible {
  box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.2);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff !important;
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.28);
}

.btn-outline-primary {
  border-color: var(--primary);
  color: var(--primary) !important;
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary);
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.22);
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--dark) !important;
}

.btn-accent:hover {
  background: #c2932f;
  border-color: #c2932f;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 83, 0.3);
}

.btn-lg { padding: 0.8rem 2rem; font-size: 1.05rem; }

.btn-sm { padding: 0.4rem 1rem; font-size: 0.85rem; }

/* === Header / Nav === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1080;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 76px;
}

.brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  white-space: nowrap;
  line-height: 1.2;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.brand-text { letter-spacing: -0.01em; }

.brand-text span { color: var(--primary); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.1rem;
  border-radius: 50rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.25);
}

.nav-link.active {
  background: var(--primary);
  color: #fff !important;
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(200, 16, 46, 0.25);
}

.header-actions { display: flex; align-items: center; gap: 0.75rem; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--white);
  color: var(--text);
  font-size: 1.15rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

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

.nav-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.25);
}

/* === Hero === */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 10, 18, 0.9) 0%, rgba(20, 20, 35, 0.72) 45%, rgba(200, 16, 46, 0.42) 100%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(transparent, var(--bg));
}

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

.hero-content { max-width: 680px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  padding: 0.45rem 1.1rem;
  border-radius: 50rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #fff;
  margin-bottom: 1.5rem;
}

.hero-badge i { color: var(--accent); }

.hero h1 {
  font-size: 3.25rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: #fff;
}

.hero .hero-sub {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
}

.hero p.hero-desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 2.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.2rem;
}

.hero-stat .num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero-stat .label {
  display: block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 2px;
}

/* === Intro === */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.intro-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.intro-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.intro-image .intro-image-tag {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 0.85rem;
  padding: 0.4rem 1rem;
  border-radius: 50rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.intro-content .section-title { margin-bottom: 16px; }

.intro-content .section-bar { margin-left: 0; margin-right: auto; }

.intro-content p { color: var(--muted); font-size: 1.02rem; margin-bottom: 1.2rem; }

.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-top: 1.5rem; }

.intro-feature {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.intro-feature:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
  border-color: rgba(200, 16, 46, 0.2);
}

.intro-feature i {
  font-size: 1.2rem;
  color: var(--primary);
  background: var(--primary-light);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.intro-feature h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.intro-feature p {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0;
}

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

.category-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  height: 100%;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 15, 26, 0.72);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.32rem 0.9rem;
  border-radius: 50rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.category-card .card-body {
  padding: 1.6rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.category-card .card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.category-card .card-text {
  font-size: 0.92rem;
  color: var(--muted);
  flex: 1;
  margin-bottom: 1.2rem;
}

.category-card .btn {
  align-self: flex-start;
}

/* === Latest Posts === */
.latest { background: var(--bg); }

.post-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.post-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.28rem 0.85rem;
  border-radius: 50rem;
}

.post-date {
  font-size: 0.82rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.post-title {
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
}

.post-title a { color: var(--text); }
.post-title a:hover { color: var(--primary); }

.post-excerpt {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.read-more i { transition: transform var(--transition); }
.read-more:hover i { transform: translateX(4px); }

.empty-tip {
  text-align: center;
  padding: 2.5rem;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
}

/* === Stats === */
.stats-section {
  background: var(--dark);
  padding: 80px 0;
  color: #fff;
}

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }

.stat-item {
  text-align: center;
  padding: 1.8rem 1rem;
}

.stat-item .stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.stat-item .num {
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-item .label {
  margin-top: 6px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

/* === Process === */
.process { background: var(--bg); }

.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.8rem; position: relative; }

.process-step {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.process-step:hover {
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  box-shadow: 0 6px 16px rgba(200, 16, 46, 0.3);
}

.process-step h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }

.process-step p { font-size: 0.88rem; color: var(--muted); margin-bottom: 0; }

/* === Topics === */
.topics-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.topics-card:hover { box-shadow: var(--shadow); }

.topics-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 1.2rem; display: flex; align-items: center; gap: 0.5rem; }

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

.topic-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.topic-item:last-child { border-bottom: none; }

.topic-item .topic-rank {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
}

.topic-item:nth-child(1) .topic-rank { background: var(--primary); color: #fff; }
.topic-item:nth-child(2) .topic-rank { background: var(--accent); color: var(--dark); }

.topic-item a { color: var(--text); font-size: 0.95rem; font-weight: 600; flex: 1; line-height: 1.5; }
.topic-item a:hover { color: var(--primary); }

.topic-like {
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}

.topic-like i { margin-right: 3px; color: var(--primary); }

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

.accordion.custom-accordion {
  max-width: 820px;
  margin: 0 auto;
  --bs-accordion-border-radius: var(--radius);
  --bs-accordion-border-width: 1px;
  --bs-accordion-border-color: var(--border);
  --bs-accordion-btn-bg: var(--white);
  --bs-accordion-active-bg: var(--primary-light);
  --bs-accordion-active-color: var(--primary-dark);
  --bs-accordion-btn-padding-x: 1.5rem;
  --bs-accordion-btn-padding-y: 1.25rem;
  --bs-accordion-body-padding-x: 1.5rem;
  --bs-accordion-body-padding-y: 1.25rem;
}

.custom-accordion .accordion-item {
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.custom-accordion .accordion-item:hover { box-shadow: var(--shadow); }

.custom-accordion .accordion-button {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: var(--white);
  line-height: 1.5;
}

.custom-accordion .accordion-button:not(.collapsed) {
  background: var(--primary-light);
  color: var(--primary-dark);
  box-shadow: none;
}

.custom-accordion .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.15);
  border-color: transparent;
}

.custom-accordion .accordion-body {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* === CTA === */
.cta-section {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 100px 0;
  text-align: center;
  color: #fff;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 15, 26, 0.92), rgba(200, 16, 46, 0.72));
}

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

.cta-section h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* === Footer === */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 50px;
}

.footer-brand { font-size: 1.2rem; font-weight: 800; color: #fff; display: inline-flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem; }

.footer-brand .brand-icon { background: var(--primary); }

.footer-brand span { color: var(--accent); }

.footer-about { font-size: 0.9rem; line-height: 1.8; margin-bottom: 1.2rem; max-width: 340px; }

.footer-social { display: flex; gap: 0.6rem; }

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.2rem;
  position: relative;
  padding-bottom: 0.6rem;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-links { list-style: none; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; }

.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.8rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

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

/* === Back to top === */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1050;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  font-size: 1rem;
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.35);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
}

.back-top.visible { opacity: 1; visibility: visible; }

.back-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* === Responsive === */
@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .intro-grid { gap: 2.5rem; }
  .intro-image img { height: 340px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
  .stats-grid { gap: 1rem; }
}

@media (max-width: 991px) {
  .header-inner { min-height: 66px; gap: 1rem; }
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: fixed;
    top: 66px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 1rem 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    display: none;
    max-height: calc(100vh - 66px);
    overflow-y: auto;
  }
  .main-nav.open { display: flex; }
  .nav-link {
    padding: 0.8rem 1.2rem;
    border-radius: 12px;
    font-size: 1rem;
    border: none;
  }
  .header-actions { margin-left: auto; }
  .hero { min-height: 560px; }
  .hero h1 { font-size: 2.5rem; }
  .intro-grid { grid-template-columns: 1fr; gap: 2rem; }
  .intro-image img { height: 300px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 1.75rem; }
  .hero { min-height: 500px; }
  .hero h1 { font-size: 2.1rem; }
  .hero p.hero-desc { font-size: 1rem; }
  .hero-stats { gap: 1.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; padding-bottom: 32px; }
  .btn-lg { padding: 0.7rem 1.6rem; font-size: 1rem; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 1.75rem; }
  .hero-badge { font-size: 0.78rem; padding: 0.4rem 0.9rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .hero-stats { gap: 1.2rem; }
  .intro-features { grid-template-columns: 1fr; }
  .stat-item .num { font-size: 2rem; }
  .section-title { font-size: 1.55rem; }
  .header-actions .btn { display: none; }
  .cta-section h2 { font-size: 1.8rem; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { justify-content: center; }
  .back-top { bottom: 16px; right: 16px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c8102e;
            --primary-dark: #9e0c24;
            --primary-light: #fce8ea;
            --accent: #ffcc00;
            --accent-light: #fff6d6;
            --dark: #1b1b1b;
            --gray-50: #f8f9fa;
            --gray-100: #f1f3f5;
            --gray-200: #e9ecef;
            --gray-300: #dee2e6;
            --gray-600: #6c757d;
            --gray-700: #495057;
            --gray-800: #343a40;
            --body-bg: #ffffff;
            --body-text: #212529;
            --text-muted: #6c757d;
            --border-radius: 16px;
            --border-radius-sm: 10px;
            --border-radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        /* ===== Reset / 基础 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--body-bg);
            color: var(--body-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--dark);
        }

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

        /* ===== 按钮 ===== */
        .btn {
            border-radius: 50px;
            font-weight: 600;
            padding: 10px 24px;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 16, 46, 0.25);
        }

        .btn-outline-light {
            border-color: #fff;
            color: #fff;
        }

        .btn-outline-light:hover {
            background: #fff;
            color: var(--dark);
            transform: translateY(-2px);
        }

        .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* ===== Header ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 76px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .brand-text span {
            color: var(--primary);
        }

        /* 导航 */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--gray-700);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: var(--gray-100);
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            font-size: 18px;
            color: var(--dark);
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle:focus {
            outline: 3px solid rgba(200, 16, 46, 0.3);
        }

        /* 移动端导航 */
        @media (max-width: 991.98px) {
            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                z-index: 999;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-link {
                padding: 14px 16px;
                border-radius: 12px;
                font-size: 16px;
            }

            .header-actions {
                margin-left: auto;
            }

            .header-actions .btn {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .header-inner {
                height: 64px;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }

            .brand-text {
                font-size: 17px;
            }

            .main-nav {
                top: 64px;
            }
        }

        /* ===== Hero / 页面头 ===== */
        .page-hero {
            background: linear-gradient(135deg, #1b1b1b 0%, var(--primary-dark) 55%, var(--primary) 100%);
            color: #fff;
            padding: 80px 0 120px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: url("/assets/images/backpic/back-1.png") center/cover no-repeat;
            opacity: 0.2;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 204, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(4px);
            margin-bottom: 24px;
        }

        .hero-badge i {
            color: var(--accent);
        }

        .page-hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .page-hero h1 .highlight {
            color: var(--accent);
        }

        .page-hero p {
            font-size: clamp(15px, 1.5vw, 18px);
            opacity: 0.9;
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-stat-icon {
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent);
        }

        .hero-stat-value {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 13px;
            opacity: 0.7;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--gray-50);
            border-bottom: 1px solid var(--gray-200);
        }

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

        .breadcrumb a {
            color: var(--gray-600);
        }

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

        .breadcrumb-item + .breadcrumb-item::before {
            color: var(--gray-400);
            content: "›";
        }

        .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 80px 0;
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .section-subtitle {
            color: var(--gray-600);
            font-size: 16px;
            max-width: 680px;
            line-height: 1.8;
        }

        .section-divider {
            width: 56px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin-bottom: 20px;
        }

        /* ===== 入门引导 ===== */
        .guide-card {
            background: #fff;
            border-radius: var(--border-radius);
            border: 1px solid var(--gray-200);
            padding: 32px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .guide-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .guide-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .guide-card:hover::before {
            transform: scaleX(1);
        }

        .guide-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .guide-card:hover .guide-card-icon {
            background: var(--primary);
            color: #fff;
        }

        .guide-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .guide-card p {
            color: var(--gray-600);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .guide-card .step-list {
            margin-bottom: 16px;
        }

        .guide-card .step-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--gray-700);
            padding: 4px 0;
        }

        .guide-card .step-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 13px;
        }

        /* ===== 入口方式卡片 ===== */
        .entry-method-card {
            background: var(--gray-50);
            border: 1px solid var(--gray-200);
            border-radius: var(--border-radius);
            padding: 32px;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .entry-method-card:hover {
            background: #fff;
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .entry-method-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px;
        }

        .method-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .method-icon.icon-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .method-icon.icon-accent {
            background: var(--accent-light);
            color: #d9480f;
        }

        .method-icon.icon-dark {
            background: #e9ecef;
            color: var(--dark);
        }

        .entry-method-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0;
        }

        .entry-method-card .method-desc {
            color: var(--gray-600);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .method-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--gray-200);
            border-radius: 50px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 500;
            color: var(--gray-700);
            transition: var(--transition);
        }

        .method-tags .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .method-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

        .method-link:hover {
            gap: 12px;
        }

        /* ===== 排名列表 ===== */
        .rank-wrapper {
            background: var(--gray-50);
            border-radius: var(--border-radius-lg);
            padding: 40px;
            border: 1px solid var(--gray-200);
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border-radius: var(--border-radius-sm);
            padding: 18px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .rank-item:last-child {
            margin-bottom: 0;
        }

        .rank-item:hover {
            border-color: var(--gray-200);
            box-shadow: var(--shadow-sm);
            transform: translateX(6px);
        }

        .rank-number {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--gray-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--gray-700);
            font-size: 16px;
            flex-shrink: 0;
        }

        .rank-item:nth-child(1) .rank-number {
            background: var(--accent-light);
            color: #e8590c;
        }

        .rank-item:nth-child(2) .rank-number {
            background: var(--primary-light);
            color: var(--primary);
        }

        .rank-item:nth-child(3) .rank-number {
            background: #e7f5ff;
            color: #1971c2;
        }

        .rank-content {
            flex: 1;
            min-width: 0;
        }

        .rank-content h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-content p {
            font-size: 13px;
            color: var(--gray-600);
            margin: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-badge {
            background: var(--gray-50);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--gray-700);
            flex-shrink: 0;
            border: 1px solid var(--gray-200);
        }

        .rank-badge.hot {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(200, 16, 46, 0.1);
        }

        .rank-badge.new {
            background: #e7f5ff;
            color: #1971c2;
            border-color: rgba(25, 113, 194, 0.1);
        }

        /* ===== 内容卡片 ===== */
        .content-card {
            background: #fff;
            border-radius: var(--border-radius);
            border: 1px solid var(--gray-200);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
        }

        .content-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .content-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .content-card-category {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(4px);
            border-radius: 50px;
            padding: 6px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
        }

        .content-card-body {
            padding: 24px;
        }

        .content-card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--gray-600);
            margin-bottom: 12px;
        }

        .content-card-body .card-meta .dot {
            width: 4px;
            height: 4px;
            background: var(--gray-300);
            border-radius: 50%;
        }

        .content-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .content-card-body p {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .card-more:hover {
            gap: 12px;
        }

        /* ===== 图文并排区 ===== */
        .featured-block {
            background: var(--gray-50);
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            border: 1px solid var(--gray-200);
        }

        .featured-img {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .featured-content {
            padding: 48px;
        }

        .featured-content .section-eyebrow {
            margin-bottom: 12px;
        }

        .featured-content h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .featured-content p {
            color: var(--gray-600);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .feature-list {
            margin: 24px 0;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 15px;
            color: var(--gray-700);
        }

        .feature-list li i {
            color: var(--primary);
            margin-top: 5px;
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            background: var(--gray-50);
            border-radius: var(--border-radius-lg);
            padding: 40px;
            border: 1px solid var(--gray-200);
        }

        .accordion-item {
            border: none;
            background: transparent;
            margin-bottom: 12px;
        }

        .accordion-button {
            background: #fff;
            border: 1px solid var(--gray-200);
            border-radius: var(--border-radius-sm) !important;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 15px;
            color: var(--dark);
            box-shadow: none;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed) {
            background: var(--primary);
            color: #fff;
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.2);
            z-index: 0;
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23212529'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed)::after {
            filter: brightness(0) invert(1);
        }

        .accordion-body {
            background: #fff;
            border: 1px solid var(--gray-200);
            border-top: none;
            border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
            padding: 20px 24px;
            font-size: 14px;
            color: var(--gray-700);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--border-radius-lg);
            padding: 64px;
            position: relative;
            overflow: hidden;
            text-align: center;
            color: #fff;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-section h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            opacity: 0.9;
            font-size: 16px;
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 提示条 ===== */
        .tip-bar {
            background: var(--accent-light);
            border: 1px solid rgba(255, 204, 0, 0.3);
            border-radius: var(--border-radius-sm);
            padding: 16px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: #5f3dc4;
            margin-bottom: 24px;
        }

        .tip-bar i {
            font-size: 20px;
            color: #e8590c;
            flex-shrink: 0;
        }

        /* ===== 头像组 ===== */
        .avatar-group {
            display: flex;
            align-items: center;
        }

        .avatar-group .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 3px solid #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-right: -8px;
            background: var(--primary);
        }

        .avatar-group .avatar:nth-child(2) {
            background: #1971c2;
        }

        .avatar-group .avatar:nth-child(3) {
            background: #e8590c;
        }

        .avatar-group .avatar:nth-child(4) {
            background: #2f9e44;
        }

        .avatar-group .avatar-more {
            background: var(--gray-200);
            color: var(--gray-700);
        }

        /* ===== 数字数据 ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-card {
            background: #fff;
            border: 1px solid var(--gray-200);
            border-radius: var(--border-radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }

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

        .data-card-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .data-card-value {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.2;
        }

        .data-card-label {
            font-size: 14px;
            color: var(--gray-600);
            margin-top: 6px;
        }

        /* ===== 暗色板块 ===== */
        .dark-section {
            background: var(--dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .dark-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 16, 46, 0.3) 0%, transparent 70%);
        }

        .dark-section .section-title {
            color: #fff;
        }

        .dark-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #141414;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-about {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 24px;
            color: rgba(255, 255, 255, 0.6);
        }

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

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-links li {
            padding: 6px 0;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .section-padding {
                padding: 60px 0;
            }

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

            .featured-content {
                padding: 32px;
            }

            .cta-section {
                padding: 40px 24px;
            }

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

            .rank-wrapper {
                padding: 24px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-stats-row {
                gap: 20px;
            }

            .page-hero {
                padding: 60px 0 80px;
            }

            .guide-card {
                padding: 24px;
            }

            .entry-method-card {
                padding: 24px;
            }

            .faq-wrap {
                padding: 24px;
            }

            .rank-item {
                flex-wrap: wrap;
                gap: 12px;
            }

            .rank-content {
                flex: 1 1 100%;
            }

            .rank-content h4,
            .rank-content p {
                white-space: normal;
            }

            .ranking .btn {
                width: 100%;
            }
        }

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

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

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

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

            .hero-stats-row {
                flex-direction: column;
            }

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

            .featured-content {
                padding: 24px;
            }

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

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

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

            .rank-wrapper {
                padding: 16px;
            }

            .rank-item {
                padding: 14px 16px;
            }

            .avatar-group {
                display: none;
            }

            .header-actions .btn {
                display: none;
            }

            .brand-text {
                font-size: 16px;
            }
        }

        /* ===== 动画工具 ===== */
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }
        .animate-delay-5 {
            animation-delay: 0.5s;
        }

        /* 常用工具类 */
        .text-primary-custom {
            color: var(--primary) !important;
        }

        .bg-primary-light {
            background: var(--primary-light) !important;
        }

/* roulang page: article */
:root {
            --primary: #d92b3a;
            --primary-dark: #b81e2a;
            --primary-light: #fde8ea;
            --accent: #1a1f2e;
            --accent-light: #2d3550;
            --bg-body: #f4f6f9;
            --bg-surface: #ffffff;
            --bg-soft: #eef1f5;
            --text-main: #1e2430;
            --text-muted: #6b7280;
            --border: #e6eaf0;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow-sm: 0 2px 8px rgba(20, 22, 30, .06);
            --shadow: 0 10px 30px rgba(20, 22, 30, .08);
            --shadow-lg: 0 18px 48px rgba(20, 22, 30, .12);
            --transition: all .25s ease;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            color: var(--text-main);
            background: var(--bg-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
        }
        .container {
            max-width: 1200px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .btn {
            border-radius: 50px;
            padding: 10px 24px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #fff;
        }
        .btn-primary:hover, .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(217, 43, 58, .25);
        }
        .btn-outline-light {
            border: 1px solid rgba(255,255,255,.7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,.15);
            color: #fff;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,.9);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(20,22,30,.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--accent);
            white-space: nowrap;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 6px 16px rgba(217, 43, 58, .3);
        }
        .brand-text span {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .main-nav .nav-link {
            border-radius: 50px;
            padding: 8px 18px;
            font-weight: 500;
            font-size: 14px;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .main-nav .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .main-nav .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(217,43,58,.28);
        }
        .header-actions {
            display: flex;
            align-items: center;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--bg-soft);
            font-size: 18px;
            color: var(--text-main);
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: 84px 0 76px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(20,22,30,.82) 0%, rgba(26,31,46,.68) 60%, rgba(20,22,30,.45) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-wrap {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255,255,255,.75);
            margin-bottom: 20px;
        }
        .breadcrumb-wrap a {
            color: rgba(255,255,255,.8);
            transition: var(--transition);
        }
        .breadcrumb-wrap a:hover {
            color: #fff;
        }
        .breadcrumb-wrap .sep {
            opacity: .6;
        }
        .breadcrumb-wrap .current {
            color: #fff;
            font-weight: 600;
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .page-banner h1 {
            font-size: clamp(26px, 4vw, 42px);
            font-weight: 800;
            line-height: 1.35;
            max-width: 800px;
            word-break: break-word;
            margin-bottom: 18px;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
        }
        .banner-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255,255,255,.12);
            border: 1px solid rgba(255,255,255,.2);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(6px);
        }

        /* Article Main */
        .article-main {
            padding: 72px 0;
        }
        .article-card {
            background: var(--bg-surface);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(255,255,255,.6);
        }
        .article-cover {
            margin-bottom: 30px;
        }
        .article-cover img {
            width: 100%;
            border-radius: 14px;
            max-height: 420px;
            object-fit: cover;
            box-shadow: var(--shadow-sm);
        }
        .article-content {
            font-size: 16px;
            line-height: 1.95;
            color: var(--text-main);
        }
        .article-content p {
            margin-bottom: 22px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            margin: 36px 0 18px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            margin: 28px 0 14px;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 22px;
            padding-left: 1.4em;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content img {
            border-radius: 12px;
            margin: 8px 0 22px;
            box-shadow: var(--shadow-sm);
        }
        .article-content blockquote {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 10px 10px 0;
            padding: 18px 22px;
            margin: 24px 0;
            color: #7a2530;
            font-style: normal;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
        }
        .article-content a:hover {
            text-decoration: underline;
        }
        .article-content code {
            background: var(--bg-soft);
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 14px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 34px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 50px;
            background: var(--bg-soft);
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-chip:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .share-box {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 30px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .share-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 15px;
            transition: var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 18px rgba(217,43,58,.2);
        }

        /* Not found */
        .not-found-card {
            text-align: center;
            padding: 48px 24px;
        }
        .not-found-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 22px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .not-found-card h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--accent);
        }
        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 26px;
        }

        /* Sidebar */
        .sidebar {
            position: sticky;
            top: 96px;
        }
        .sidebar-card {
            background: var(--bg-surface);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(255,255,255,.6);
            margin-bottom: 24px;
        }
        .sidebar-card:last-child {
            margin-bottom: 0;
        }
        .sidebar-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--primary);
        }
        .sidebar-title i {
            color: var(--primary);
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .sidebar-list a i {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            transition: var(--transition);
        }
        .sidebar-list a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .sidebar-list a:hover i {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags .tag-chip {
            background: var(--bg-soft);
            color: var(--text-main);
            border-radius: 50px;
            padding: 5px 13px;
            font-size: 13px;
            transition: var(--transition);
        }
        .sidebar-tags .tag-chip:hover {
            background: var(--primary);
            color: #fff;
        }
        .tip-card {
            background: linear-gradient(135deg, var(--primary-light), #fff6f7);
            border: 1px solid #fbd0d4;
            border-radius: var(--radius-sm);
            padding: 20px;
            font-size: 14px;
            color: #7a2530;
            line-height: 1.8;
        }
        .tip-card i {
            font-size: 20px;
            margin-bottom: 8px;
            color: var(--primary);
        }

        /* Extension Section */
        .extension-section {
            background: var(--accent);
            color: #fff;
            padding: 80px 0;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .section-head .eyebrow {
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .section-head h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            line-height: 1.3;
            margin: 0;
        }
        .section-head p {
            color: rgba(255,255,255,.65);
            max-width: 460px;
            margin: 0;
            font-size: 14px;
        }
        .ext-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 12px 30px rgba(0,0,0,.2);
            transition: var(--transition);
            height: 100%;
        }
        .ext-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 22px 45px rgba(0,0,0,.3);
        }
        .ext-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .ext-card-body {
            padding: 24px;
        }
        .ext-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
        }
        .ext-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .ext-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
        }
        .ext-link i {
            transition: transform .2s;
        }
        .ext-link:hover i {
            transform: translateX(4px);
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-surface);
            padding: 80px 0;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 24px 26px;
            margin-bottom: 16px;
            background: #fff;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: #f0b6bc;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition);
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, margin .3s ease;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 14px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            margin-top: 14px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(120deg, var(--primary-dark), var(--primary) 60%, #ff5a66);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255,255,255,.08);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-inner h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            font-size: 15px;
            opacity: .9;
            max-width: 600px;
            margin: 0 auto 30px;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--accent);
            color: rgba(255,255,255,.75);
            padding: 70px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255,255,255,.08);
        }
        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        .footer-brand span {
            color: var(--primary);
        }
        .footer-about {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,.55);
            max-width: 360px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,.1);
            color: rgba(255,255,255,.8);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255,255,255,.6);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,.4);
        }
        .footer-bottom a {
            color: rgba(255,255,255,.7);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                padding: 16px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 30px rgba(0,0,0,.08);
                max-height: 0;
                overflow: hidden;
                transition: max-height .35s ease, padding .35s ease;
                visibility: hidden;
                opacity: 0;
            }
            .main-nav.open {
                max-height: 500px;
                padding: 16px;
                visibility: visible;
                opacity: 1;
            }
            .main-nav .nav-link {
                width: 100%;
                display: flex;
                padding: 12px 18px;
                border-radius: 12px;
            }
            .header-actions {
                margin-left: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            .page-banner {
                padding: 60px 0 56px;
            }
            .page-banner h1 {
                font-size: 26px;
            }
            .article-card {
                padding: 26px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 21px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .sidebar {
                position: static;
                margin-top: 24px;
            }
            .extension-section {
                padding: 60px 0;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .site-header .brand {
                font-size: 16px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .header-actions .btn {
                display: none;
            }
            .page-banner h1 {
                font-size: 23px;
            }
            .banner-meta .meta-item {
                padding: 5px 12px;
                font-size: 12px;
            }
            .article-card {
                padding: 20px;
                border-radius: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand {
                font-size: 16px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #c8102e;
  --primary-dark: #9e0d24;
  --primary-light: #fce8ea;
  --accent: #d4a53c;
  --dark: #1a1a2e;
  --text: #2f2f3a;
  --text-light: #7a7a85;
  --bg: #f8f6f3;
  --bg-white: #ffffff;
  --border: #ece7e2;
  --radius: 18px;
  --radius-lg: 24px;
  --radius-sm: 10px;
  --shadow: 0 6px 30px rgba(26,26,46,.07);
  --shadow-hover: 0 14px 44px rgba(200,16,46,.12);
  --transition: all .3s ease;
  --font-family: 'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--font-family);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.text-primary-brand{color:var(--primary)}
.text-accent-brand{color:var(--accent)}
.bg-light-brand{background:var(--primary-light)}
.btn{border-radius:50px;padding:10px 26px;font-weight:600;border:2px solid transparent;transition:var(--transition)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(200,16,46,.25)}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;background:transparent}
.btn-outline-light:hover{background:#fff;color:var(--primary);border-color:#fff}
.btn-outline-brand{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline-brand:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-lg{padding:14px 38px;font-size:1.05rem}
.badge{padding:.45em .9em;border-radius:50px;font-weight:600;font-size:.78rem}
.badge-brand{background:var(--primary-light);color:var(--primary)}
.badge-accent{background:rgba(212,165,60,.15);color:#a07d1f}
.badge-outline{border:1px solid var(--border);color:var(--text-light);background:#fff}
.badge-green{background:rgba(22,163,74,.12);color:#15803d}
.badge-blue{background:rgba(37,99,235,.12);color:#1d4ed8}
.section-title{font-size:1.9rem;font-weight:800;color:var(--dark);letter-spacing:-.5px;line-height:1.25}
.section-subtitle{color:var(--text-light);font-size:1rem;max-width:620px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:36px;flex-wrap:wrap;gap:16px}
.section-link{color:var(--primary);font-weight:600;font-size:.92rem;display:inline-flex;align-items:center;gap:6px}
.section-link:hover{color:var(--primary-dark);gap:10px}
/* Header */
.site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1050;box-shadow:0 2px 18px rgba(0,0,0,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem;box-shadow:0 4px 14px rgba(200,16,46,.3);flex-shrink:0}
.brand-text{font-weight:800;font-size:1.2rem;color:var(--dark);letter-spacing:-.3px;white-space:nowrap}
.brand-text span{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav .nav-link{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:50px;font-weight:600;font-size:.92rem;color:#555;transition:var(--transition)}
.main-nav .nav-link i{font-size:.85rem;opacity:.8}
.main-nav .nav-link:hover{color:var(--primary);background:var(--primary-light)}
.main-nav .nav-link.active{color:var(--primary);background:var(--primary-light)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--dark);font-size:1.1rem;align-items:center;justify-content:center;transition:var(--transition)}
.nav-toggle:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}
/* Page Banner */
.page-banner{position:relative;padding:96px 0 90px;background:linear-gradient(135deg,#141423 0%,#1f1f35 55%,#2a1a28 100%);color:#fff;overflow:hidden}
.page-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.22}
.page-banner::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(20,20,35,.9) 30%,rgba(200,16,46,.35) 100%)}
.page-banner .container{position:relative;z-index:2}
.banner-breadcrumb{display:flex;align-items:center;gap:8px;font-size:.85rem;color:rgba(255,255,255,.72);margin-bottom:18px}
.banner-breadcrumb a:hover{color:#fff}
.banner-breadcrumb i{font-size:.7rem}
.banner-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);color:#fff;padding:8px 18px;border-radius:50px;font-size:.82rem;font-weight:600;margin-bottom:18px;backdrop-filter:blur(6px)}
.banner-badge i{color:var(--accent)}
.page-banner h1{font-size:3rem;font-weight:800;letter-spacing:-1px;line-height:1.2;margin-bottom:16px}
.page-banner h1 span{color:var(--accent)}
.page-banner p{font-size:1.1rem;color:rgba(255,255,255,.82);max-width:640px;margin-bottom:28px}
.banner-stats{display:flex;gap:32px;margin-top:32px;flex-wrap:wrap}
.banner-stats .stat-item h4{font-size:1.7rem;font-weight:800;color:#fff;margin-bottom:2px}
.banner-stats .stat-item p{font-size:.82rem;color:rgba(255,255,255,.6);margin-bottom:0;text-transform:uppercase;letter-spacing:.5px}
/* Topic Chips */
.topic-section{padding:60px 0 20px}
.topic-inner{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow)}
.topic-title{font-size:1.05rem;font-weight:700;color:var(--dark);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.topic-title i{color:var(--primary)}
.topic-chips{display:flex;flex-wrap:wrap;gap:10px}
.topic-chips .chip{display:inline-flex;align-items:center;gap:8px;padding:9px 20px;border-radius:50px;background:var(--bg);border:1px solid var(--border);color:#555;font-weight:500;font-size:.9rem;transition:var(--transition)}
.topic-chips .chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light);transform:translateY(-1px)}
.topic-chips .chip.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(200,16,46,.25)}
.topic-chips .chip i{font-size:.78rem}
/* Featured + Latest */
.latest-section{padding:50px 0 70px;scroll-margin-top:90px}
.news-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:28px}
.featured-card{border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-white);border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);display:flex;flex-direction:column}
.featured-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.featured-card .card-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.featured-card .card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.featured-card:hover .card-thumb img{transform:scale(1.05)}
.featured-card .card-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.55))}
.featured-card .thumb-badge{position:absolute;top:16px;left:16px;z-index:2}
.featured-card .card-body{padding:26px 28px;flex:1;display:flex;flex-direction:column}
.featured-card .card-meta{display:flex;align-items:center;gap:14px;font-size:.82rem;color:var(--text-light);margin-bottom:10px}
.featured-card .card-meta i{margin-right:4px}
.featured-card h3{font-size:1.35rem;font-weight:800;color:var(--dark);line-height:1.4;margin-bottom:10px}
.featured-card h3 a:hover{color:var(--primary)}
.featured-card p{color:var(--text-light);font-size:.92rem;margin-bottom:18px;flex:1}
.featured-card .card-footer-line{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--border);padding-top:16px}
.author-avatars{display:flex;align-items:center}
.author-avatars .avatar{width:30px;height:30px;border-radius:50%;border:2px solid #fff;margin-left:-8px;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;color:#fff}
.author-avatars .avatar:first-child{margin-left:0}
.author-avatars .avatar:nth-child(1){background:#4f6ef7}
.author-avatars .avatar:nth-child(2){background:var(--primary)}
.author-avatars .avatar:nth-child(3){background:#22a06b}
.news-list-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.news-list-card .list-title{font-size:1.1rem;font-weight:800;color:var(--dark);margin-bottom:20px;display:flex;align-items:center;justify-content:space-between}
.news-list-card .list-title i{color:var(--primary);font-size:1rem;cursor:pointer}
.news-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--border);transition:var(--transition)}
.news-item:last-child{border-bottom:none;padding-bottom:0}
.news-item:hover{padding-left:8px}
.news-item .news-icon{width:38px;height:38px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.9rem}
.news-item:nth-child(2) .news-icon{background:rgba(212,165,60,.15);color:#a07d1f}
.news-item:nth-child(3) .news-icon{background:rgba(22,163,74,.12);color:#15803d}
.news-item:nth-child(4) .news-icon{background:rgba(37,99,235,.12);color:#1d4ed8}
.news-item:nth-child(5) .news-icon{background:rgba(217,70,239,.12);color:#a21caf}
.news-item h5{font-size:.94rem;font-weight:700;margin-bottom:5px;line-height:1.45}
.news-item h5 a:hover{color:var(--primary)}
.news-item .news-meta{font-size:.76rem;color:var(--text-light);display:flex;align-items:center;gap:10px}
.news-item .news-meta span{display:inline-flex;align-items:center;gap:3px}
/* Stats Section */
.stats-section{padding:70px 0;background:linear-gradient(135deg,#17172b,#1f1f35 60%,#2a1624);color:#fff;position:relative;overflow:hidden}
.stats-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.15}
.stats-section .container{position:relative;z-index:2}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stats-card{text-align:center;padding:34px 20px;border-radius:var(--radius-lg);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(8px);transition:var(--transition)}
.stats-card:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.stats-card .stat-icon{width:48px;height:48px;margin:0 auto 14px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff}
.stats-card .stat-number{font-size:2.1rem;font-weight:800;line-height:1.1;margin-bottom:4px}
.stats-card .stat-label{font-size:.85rem;color:rgba(255,255,255,.62)}
/* Topics / Special */
.special-section{padding:70px 0}
.special-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.special-card{border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-white);border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);position:relative}
.special-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-6px)}
.special-card .special-img{position:relative;aspect-ratio:3/2;overflow:hidden}
.special-card .special-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.special-card:hover .special-img img{transform:scale(1.06)}
.special-card .special-badge{position:absolute;top:14px;left:14px;z-index:2}
.special-card .special-body{padding:22px 22px 24px}
.special-card .special-title{font-size:1.05rem;font-weight:800;color:var(--dark);margin-bottom:8px;line-height:1.4}
.special-card .special-title a:hover{color:var(--primary)}
.special-card .special-desc{font-size:.87rem;color:var(--text-light);margin-bottom:14px}
.special-card .special-meta{display:flex;align-items:center;gap:14px;font-size:.78rem;color:var(--text-light)}
.special-card .special-meta i{margin-right:4px}
/* FAQ */
.faq-section{padding:70px 0;background:var(--bg-white);border-top:1px solid var(--border)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);padding:26px 28px;transition:var(--transition);background:var(--bg)}
.faq-item:hover{border-color:var(--primary);background:var(--primary-light)}
.faq-item h4{font-size:1rem;font-weight:700;color:var(--dark);margin-bottom:8px;display:flex;align-items:flex-start;gap:10px}
.faq-item h4 i{color:var(--primary);font-size:.85rem;margin-top:4px}
.faq-item p{font-size:.9rem;color:var(--text-light);margin-left:24px;margin-bottom:0}
/* CTA */
.cta-section{padding:80px 0;position:relative;overflow:hidden}
.cta-card{position:relative;background:linear-gradient(135deg,var(--primary),#a3102a 70%,#7d0d20);border-radius:30px;padding:56px 48px;color:#fff;overflow:hidden;box-shadow:0 20px 60px rgba(200,16,46,.3)}
.cta-card::before{content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;background:rgba(255,255,255,.12);border-radius:50%}
.cta-card::after{content:'';position:absolute;bottom:-80px;left:-40px;width:220px;height:220px;background:rgba(255,255,255,.08);border-radius:50%}
.cta-card .cta-content{position:relative;z-index:2;text-align:center}
.cta-card h2{font-size:1.8rem;font-weight:800;margin-bottom:12px}
.cta-card p{color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 30px;font-size:1rem}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
/* Footer */
.site-footer{background:#141423;color:rgba(255,255,255,.7);padding:70px 0 0;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.15rem;color:#fff;margin-bottom:16px}
.footer-brand .brand-icon{background:linear-gradient(135deg,var(--primary),var(--primary-dark))}
.footer-brand span span{color:var(--primary)}
.footer-about{font-size:.88rem;max-width:280px;color:rgba(255,255,255,.55);margin-bottom:20px;line-height:1.7}
.footer-social{display:flex;gap:10px}
.footer-social a{width:38px;height:38px;background:rgba(255,255,255,.08);border-radius:10px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);transition:var(--transition)}
.footer-social a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.footer-title{color:#fff;font-size:1rem;font-weight:700;margin-bottom:18px;padding-bottom:10px;border-bottom:2px solid rgba(255,255,255,.1)}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.55);transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-links a:hover{color:#fff;padding-left:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:.82rem;color:rgba(255,255,255,.4)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}
/* Animation */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fade-up{animation:fadeUp .7s ease both}
.fade-up-delay-1{animation-delay:.12s}
.fade-up-delay-2{animation-delay:.24s}
.fade-up-delay-3{animation-delay:.36s}
/* Responsive */
@media(max-width:1024px){
  .news-grid{grid-template-columns:1fr}
  .special-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 24px;flex-direction:column;align-items:flex-start;gap:4px;box-shadow:0 10px 30px rgba(0,0,0,.08)}
  .main-nav.open{display:flex}
  .main-nav .nav-link{width:100%;padding:12px 16px}
  .main-nav .nav-link i{width:20px}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{padding:8px 18px;font-size:.85rem}
  .page-banner h1{font-size:2.4rem}
  .faq-grid{grid-template-columns:1fr}
  .banner-stats{gap:24px}
}
@media(max-width:768px){
  .container{padding-left:18px;padding-right:18px}
  .brand-text{font-size:1.05rem}
  .brand-icon{width:36px;height:36px;font-size:.85rem}
  .page-banner{padding:70px 0 64px}
  .page-banner h1{font-size:2rem}
  .page-banner p{font-size:.98rem}
  .section-title{font-size:1.5rem}
  .topic-inner{padding:24px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stats-card{padding:26px 14px}
  .stats-card .stat-number{font-size:1.6rem}
  .special-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{padding:42px 28px;border-radius:24px}
  .cta-card h2{font-size:1.4rem}
  .cta-btns .btn{width:100%}
  .news-grid{gap:22px}
  .featured-card .card-body{padding:22px}
}
@media(max-width:520px){
  .header-inner{height:66px}
  .main-nav{top:66px}
  .brand-text{font-size:.95rem}
  .brand-icon{display:none}
  .header-actions .btn{display:none}
  .page-banner{padding:54px 0 50px}
  .page-banner h1{font-size:1.6rem}
  .page-banner p{font-size:.9rem}
  .banner-breadcrumb{font-size:.75rem}
  .banner-stats{flex-direction:column;gap:12px}
  .banner-stats .stat-item{display:flex;align-items:center;gap:10px}
  .banner-stats .stat-item h4{font-size:1.3rem}
  .banner-stats .stat-item p{font-size:.75rem;margin:0}
  .topic-section{padding:40px 0 10px}
  .topic-chips .chip{padding:7px 14px;font-size:.82rem}
  .latest-section{padding:40px 0 50px}
  .news-item{gap:10px}
  .news-item .news-icon{width:32px;height:32px;font-size:.75rem}
  .news-item h5{font-size:.86rem}
  .news-meta span{font-size:.72rem}
  .stats-section{padding:50px 0}
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .special-section{padding:50px 0}
  .faq-section{padding:50px 0}
  .faq-item{padding:20px}
  .cta-section{padding:50px 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom p{display:flex;flex-direction:column;gap:4px}
}

/* roulang page: category3 */
:root {
            --ml-primary: #C8102E;
            --ml-primary-dark: #9E0D24;
            --ml-primary-light: #E8334F;
            --ml-accent: #F5C518;
            --ml-dark: #1A1A2E;
            --ml-dark-2: #232338;
            --ml-light: #F8F7F4;
            --ml-white: #FFFFFF;
            --ml-text: #2D2D2D;
            --ml-text-light: #6E6E6E;
            --ml-text-lighter: #9A9A9A;
            --ml-border: #E8E6E3;
            --ml-border-light: #F0EFEC;
            --ml-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
            --ml-shadow-md: 0 10px 32px rgba(0, 0, 0, 0.07);
            --ml-shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.1);
            --ml-radius-sm: 8px;
            --ml-radius: 14px;
            --ml-radius-lg: 22px;
            --ml-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            color: var(--ml-text);
            background: var(--ml-white);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--ml-primary);
            text-decoration: none;
            transition: var(--ml-transition);
        }
        a:hover {
            color: var(--ml-primary-dark);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(200, 16, 46, 0.3);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-padding {
            padding: 90px 0;
        }
        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }
        .section-head .tag {
            display: inline-block;
            background: rgba(200, 16, 46, 0.08);
            color: var(--ml-primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ml-dark);
            margin-bottom: 14px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--ml-text-light);
            font-size: 16px;
            margin-bottom: 0;
        }
        .btn {
            border-radius: 10px;
            font-weight: 600;
            padding: 10px 26px;
            transition: var(--ml-transition);
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--ml-primary);
            border-color: var(--ml-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--ml-primary-dark);
            border-color: var(--ml-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(200, 16, 46, 0.3);
        }
        .btn-outline-primary {
            border-color: var(--ml-primary);
            color: var(--ml-primary);
        }
        .btn-outline-primary:hover {
            background: var(--ml-primary);
            border-color: var(--ml-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--ml-primary);
            border-color: transparent;
        }
        .btn-light:hover {
            background: var(--ml-accent);
            color: var(--ml-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-sm {
            padding: 6px 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* Header */
        .site-header {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--ml-border-light);
            position: sticky;
            top: 0;
            z-index: 1040;
            transition: box-shadow 0.3s ease, background 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--ml-primary), var(--ml-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 14px rgba(200, 16, 46, 0.3);
        }
        .brand-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--ml-dark);
            letter-spacing: -0.2px;
            line-height: 1.2;
            white-space: nowrap;
        }
        .brand-text span {
            color: var(--ml-primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            padding: 9px 18px;
            border-radius: 22px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ml-text);
            background: transparent;
            border: 1px solid transparent;
            transition: var(--ml-transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 14px;
            margin-right: 4px;
        }
        .nav-link:hover {
            color: var(--ml-primary);
            background: rgba(200, 16, 46, 0.05);
        }
        .nav-link.active {
            color: var(--ml-primary);
            background: rgba(200, 16, 46, 0.09);
            border-color: rgba(200, 16, 46, 0.12);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--ml-border);
            border-radius: 10px;
            background: var(--ml-white);
            color: var(--ml-dark);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--ml-transition);
        }
        .nav-toggle:hover {
            border-color: var(--ml-primary);
            color: var(--ml-primary);
        }

        /* Hero Banner */
        .page-hero {
            position: relative;
            background-image: linear-gradient(rgba(26, 26, 46, 0.72), rgba(26, 26, 46, 0.72)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 100px 0 90px;
            text-align: center;
            color: #fff;
        }
        .page-hero .hero-tag {
            display: inline-block;
            background: rgba(200, 16, 46, 0.85);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 20px;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.8px;
            margin-bottom: 16px;
            color: #fff;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
        }
        .page-hero .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .breadcrumb {
            justify-content: center;
            margin-bottom: 24px;
            background: none;
            padding: 0;
        }
        .breadcrumb-item {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
        }
        .breadcrumb-item a:hover {
            color: var(--ml-accent);
        }
        .breadcrumb-item.active {
            color: rgba(255, 255, 255, 0.9);
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.5);
        }

        /* Help Categories */
        .help-categories {
            background: var(--ml-white);
            padding: 90px 0;
        }
        .help-cat-card {
            background: var(--ml-white);
            border: 1px solid var(--ml-border-light);
            border-radius: var(--ml-radius);
            overflow: hidden;
            box-shadow: var(--ml-shadow-sm);
            transition: var(--ml-transition);
            height: 100%;
            display: block;
            position: relative;
        }
        .help-cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--ml-shadow-md);
            border-color: rgba(200, 16, 46, 0.15);
        }
        .help-cat-card .cat-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: #f5f5f5;
        }
        .help-cat-card .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .help-cat-card:hover .cat-card-img img {
            transform: scale(1.05);
        }
        .help-cat-card .cat-card-icon {
            position: absolute;
            left: 24px;
            bottom: -24px;
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: var(--ml-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 6px 18px rgba(200, 16, 46, 0.35);
            z-index: 2;
        }
        .help-cat-card .cat-card-body {
            padding: 40px 24px 24px;
        }
        .help-cat-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ml-dark);
            margin-bottom: 10px;
        }
        .help-cat-card p {
            font-size: 14px;
            color: var(--ml-text-light);
            margin-bottom: 16px;
            line-height: 1.65;
        }
        .help-cat-card .cat-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--ml-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--ml-transition);
        }
        .help-cat-card .cat-card-link:hover {
            gap: 12px;
        }

        /* Step Guide */
        .step-guide {
            background: var(--ml-light);
            padding: 90px 0;
        }
        .step-item {
            position: relative;
            text-align: center;
            padding: 40px 28px;
            background: var(--ml-white);
            border-radius: var(--ml-radius);
            border: 1px solid var(--ml-border-light);
            box-shadow: var(--ml-shadow-sm);
            transition: var(--ml-transition);
            height: 100%;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--ml-shadow-md);
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(200, 16, 46, 0.1);
            color: var(--ml-primary);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            border: 2px dashed rgba(200, 16, 46, 0.3);
        }
        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(200, 16, 46, 0.1), rgba(200, 16, 46, 0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--ml-primary);
            margin: 0 auto 18px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ml-dark);
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--ml-text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Help Articles */
        .help-articles {
            background: var(--ml-white);
            padding: 90px 0;
        }
        .featured-article {
            background: var(--ml-light);
            border-radius: var(--ml-radius-lg);
            overflow: hidden;
            box-shadow: var(--ml-shadow-sm);
            transition: var(--ml-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--ml-border-light);
        }
        .featured-article:hover {
            box-shadow: var(--ml-shadow-md);
            transform: translateY(-4px);
        }
        .featured-article .article-img {
            height: 230px;
            overflow: hidden;
            position: relative;
        }
        .featured-article .article-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-article:hover .article-img img {
            transform: scale(1.03);
        }
        .featured-article .article-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--ml-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
        }
        .featured-article .article-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-article h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--ml-dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .featured-article p {
            font-size: 14px;
            color: var(--ml-text-light);
            line-height: 1.7;
            flex: 1;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--ml-text-lighter);
        }
        .article-list .article-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-radius: var(--ml-radius);
            background: var(--ml-white);
            border: 1px solid var(--ml-border-light);
            margin-bottom: 14px;
            transition: var(--ml-transition);
            text-decoration: none;
        }
        .article-list .article-list-item:hover {
            border-color: rgba(200, 16, 46, 0.2);
            box-shadow: var(--ml-shadow-sm);
            transform: translateX(4px);
        }
        .article-list-item .list-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(200, 16, 46, 0.08);
            color: var(--ml-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            flex-shrink: 0;
        }
        .article-list-item .list-content {
            flex: 1;
            min-width: 0;
        }
        .article-list-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--ml-dark);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .article-list-item p {
            font-size: 13px;
            color: var(--ml-text-lighter);
            margin-bottom: 0;
        }
        .article-list-item .list-arrow {
            color: var(--ml-text-lighter);
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--ml-transition);
        }
        .article-list-item:hover .list-arrow {
            color: var(--ml-primary);
            transform: translateX(4px);
        }

        /* FAQ Section */
        .faq-section {
            background: var(--ml-light);
            padding: 90px 0;
        }
        .accordion {
            max-width: 860px;
            margin: 0 auto;
            --bs-accordion-border-color: var(--ml-border);
            --bs-accordion-border-radius: 14px;
            --bs-accordion-inner-border-radius: 13px;
            --bs-accordion-btn-padding-y: 18px;
            --bs-accordion-btn-padding-x: 22px;
            --bs-accordion-body-padding-y: 16px;
            --bs-accordion-body-padding-x: 22px;
        }
        .accordion-item {
            border: 1px solid var(--ml-border-light);
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--ml-shadow-sm);
            transition: var(--ml-transition);
        }
        .accordion-item:hover {
            box-shadow: var(--ml-shadow-md);
        }
        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--ml-dark);
            background: var(--ml-white);
            transition: var(--ml-transition);
        }
        .accordion-button:not(.collapsed) {
            background: rgba(200, 16, 46, 0.05);
            color: var(--ml-primary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-button::after {
            background-size: 14px;
            opacity: 0.6;
        }
        .accordion-button:not(.collapsed)::after {
            filter: invert(18%) sepia(90%) saturate(3400%) hue-rotate(340deg);
        }
        .accordion-body {
            font-size: 15px;
            color: var(--ml-text-light);
            line-height: 1.75;
            background: var(--ml-white);
            border-top: 1px solid var(--ml-border-light);
        }

        /* CTA Section */
        .contact-cta {
            background: var(--ml-white);
            padding: 90px 0;
        }
        .cta-card {
            background: linear-gradient(135deg, var(--ml-primary) 0%, var(--ml-primary-dark) 50%, var(--ml-dark) 100%);
            border-radius: var(--ml-radius-lg);
            padding: 60px 50px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(200, 16, 46, 0.25);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 20px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(245, 197, 24, 0.12);
        }
        .cta-card h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-card p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 1;
        }
        .cta-card .btn {
            position: relative;
            z-index: 1;
            margin: 0 6px;
        }

        /* Footer */
        .site-footer {
            background: var(--ml-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 80px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            text-decoration: none;
            margin-bottom: 18px;
        }
        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--ml-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(200, 16, 46, 0.4);
        }
        .footer-brand span span {
            color: var(--ml-accent);
        }
        .footer-about {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 22px;
            max-width: 380px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.75);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            transition: var(--ml-transition);
        }
        .footer-social a:hover {
            background: var(--ml-primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 22px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--ml-primary);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            text-decoration: none;
            transition: var(--ml-transition);
            display: inline-block;
        }
        .footer-links a:hover {
            color: var(--ml-accent);
            transform: translateX(4px);
        }
        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--ml-accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-inner {
                gap: 12px;
            }
            .main-nav {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .section-padding {
                padding: 70px 0;
            }
            .page-hero {
                padding: 80px 0 70px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--ml-white);
                flex-direction: column;
                padding: 20px;
                gap: 6px;
                border-bottom: 1px solid var(--ml-border-light);
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
                display: none;
                align-items: stretch;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                z-index: 1030;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                padding: 12px 18px;
                font-size: 15px;
                border-radius: 12px;
                text-align: left;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .btn {
                display: none;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero .hero-subtitle {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .cta-card h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-padding {
                padding: 56px 0;
            }
            .brand-text {
                font-size: 16px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .page-hero {
                padding: 60px 0 50px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-subtitle {
                font-size: 14px;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .cta-card {
                padding: 30px 18px;
            }
            .cta-card h2 {
                font-size: 21px;
            }
            .cta-card p {
                font-size: 14px;
            }
            .article-list-item {
                padding: 14px;
            }
            .featured-article .article-img {
                height: 180px;
            }
        }