/* roulang page: index */
:root {
  --bg-primary: #0B0F24;
  --bg-surface: rgba(20, 27, 58, 0.72);
  --bg-surface-hover: rgba(28, 36, 76, 0.82);
  --primary: #5B8CFF;
  --accent: #00E5CC;
  --gold: #FFB800;
  --text-primary: #E8ECFF;
  --text-secondary: #A0A8C8;
  --text-disabled: #6A7298;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 204, 0.35);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-input: 8px;
  --radius-img: 10px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45);
  --transition: 0.25s ease;
  --container-w: 1200px;
  --header-h: 64px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', '思源黑体', 'Inter', 'Roboto', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 20px; }
.section-pad { padding: 80px 0; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(11, 15, 36, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 1000;
  transition: background 0.3s ease;
}
.site-header.scrolled { background: rgba(11, 15, 36, 0.92); }
.site-header .container { height: 100%; display: flex; align-items: center; gap: 20px; }
.brand-logo { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.brand-logo .brand-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; color: #fff;
  box-shadow: 0 0 18px rgba(0, 229, 204, 0.35);
}
.brand-logo .brand-text { font-size: 20px; font-weight: 700; color: var(--text-primary); letter-spacing: 0.5px; }
.main-nav { display: flex; align-items: center; gap: 6px; margin-left: 24px; flex: 1; }
.main-nav a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  position: relative;
  transition: color var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 14px; right: 14px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.main-nav a:hover { color: var(--text-primary); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.main-nav a.active { color: var(--text-primary); }
.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.header-search { position: relative; }
.header-search input {
  width: 180px;
  padding: 8px 14px 8px 36px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header-search input::placeholder { color: var(--text-disabled); }
.header-search input:focus { border-color: var(--accent); box-shadow: 0 0 12px rgba(0, 229, 204, 0.2); }
.header-search i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-disabled); font-size: 14px; }
.header-link { font-size: 15px; color: var(--text-secondary); padding: 8px 12px; border-radius: var(--radius-btn); transition: all var(--transition); }
.header-link:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.06); }
.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  box-shadow: 0 0 24px rgba(0, 229, 204, 0.35);
  transition: all var(--transition);
}
.btn-primary:hover {
  box-shadow: 0 0 40px rgba(0, 229, 204, 0.55);
  transform: translateY(-2px);
  color: #fff;
}
.btn-secondary {
  display: inline-block;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 500;
  padding: 10px 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: all var(--transition);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 24px; cursor: pointer; padding: 8px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 680px;
  height: 100vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 36, 0.85) 0%, rgba(11, 15, 36, 0.6) 100%);
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(91, 140, 255, 0.16), transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 229, 204, 0.1), transparent 50%);
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  backdrop-filter: blur(12px);
}
.hero-badge i { color: var(--accent); }
.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  max-width: 800px;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.hero-buttons { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(0, 229, 204, 0.65);
  font-size: 22px;
  animation: breathe 2s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
  50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
}

/* ===== Trust Bar ===== */
.trust-bar {
  margin-top: -30px;
  position: relative;
  z-index: 10;
}
.trust-bar .container {
  background: rgba(20, 27, 58, 0.72);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 40px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  box-shadow: var(--shadow-card);
}
.trust-item { text-align: center; flex: 1; min-width: 120px; }
.trust-item .num { font-size: 32px; font-weight: 700; color: var(--text-primary); line-height: 1.2; }
.trust-item .num span { color: var(--accent); }
.trust-item .label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* ===== Features ===== */
.features { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.section-title p { color: var(--text-secondary); font-size: 16px; max-width: 600px; margin: 0 auto; }
.feature-grid { display: flex; gap: 24px; align-items: stretch; flex-wrap: wrap; justify-content: center; }
.feature-card {
  flex: 1;
  min-width: 280px;
  max-width: 360px;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  position: relative;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 204, 0.6), transparent);
  opacity: 0.6;
}
.feature-card:hover {
  transform: translateY(-4px);
  background: var(--bg-surface-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover), 0 0 24px rgba(0, 229, 204, 0.08);
}
.feature-card.focus-card {
  transform: translateY(-14px);
  border-color: rgba(0, 229, 204, 0.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 24px rgba(0, 229, 204, 0.12);
  min-width: 300px;
}
.feature-card.focus-card:hover { transform: translateY(-18px); }
.feature-icon {
  width: 48px; height: 48px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 20px;
  transition: all var(--transition);
}
.feature-card:hover .feature-icon { color: var(--primary); box-shadow: 0 0 16px rgba(0, 229, 204, 0.2); }
.feature-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.feature-card p { color: var(--text-secondary); font-size: 15px; line-height: 1.6; margin-bottom: 12px; }
.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 229, 204, 0.12);
  color: var(--accent);
  font-size: 12px;
  border-radius: 50px;
}

/* ===== Showcase ===== */
.showcase { padding: 40px 0; }
.showcase-row {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 80px;
  flex-wrap: wrap;
}
.showcase-row.reverse { flex-direction: row-reverse; }
.showcase-media { flex: 1; min-width: 300px; }
.showcase-img-wrap {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 24px rgba(0, 229, 204, 0.08);
  position: relative;
}
.showcase-img-wrap img { width: 100%; height: auto; display: block; }
.showcase-img-wrap::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40%;
  background: linear-gradient(0deg, rgba(11, 15, 36, 0.5), transparent);
}
.showcase-content { flex: 1; min-width: 300px; }
.showcase-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(0, 229, 204, 0.12);
  color: var(--accent);
  font-size: 13px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.showcase-content h3 { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.showcase-list { margin-top: 16px; }
.showcase-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 15px;
  color: var(--text-secondary);
}
.showcase-list i { color: var(--accent); font-size: 14px; width: 16px; }
.showcase-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--transition);
}
.showcase-link:hover { gap: 12px; }

/* ===== Social Proof ===== */
.social-proof { padding: 80px 0; }
.testimonial-grid { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.testimonial-card {
  flex: 1;
  min-width: 260px;
  max-width: 350px;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}
.testimonial-card:hover { transform: translateY(-4px); border-color: var(--border-hover); box-shadow: var(--shadow-hover); }
.testimonial-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3a4168, #5B8CFF);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px;
}
.testimonial-head .name { font-size: 14px; font-weight: 600; }
.testimonial-head .role { font-size: 12px; color: var(--text-secondary); }
.testimonial-stars { color: var(--gold); font-size: 14px; margin-bottom: 12px; }
.testimonial-card blockquote { font-size: 14px; color: var(--text-secondary); line-height: 1.7; border: none; }
.logo-bar {
  margin-top: 48px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
}
.logo-bar span {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-disabled);
  opacity: 0.5;
  transition: opacity var(--transition), color var(--transition);
  cursor: default;
}
.logo-bar span:hover { opacity: 1; color: var(--text-primary); }

/* ===== News ===== */
.news-section { padding: 80px 0; }
.news-grid { display: flex; flex-direction: column; gap: 24px; max-width: 1000px; margin: 0 auto; }
.news-card {
  display: flex;
  gap: 20px;
  align-items: center;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
}
.news-card:hover { background: var(--bg-surface-hover); transform: translateX(4px); border-color: var(--border-hover); }
.news-thumb { width: 120px; height: 80px; flex-shrink: 0; overflow: hidden; border-radius: var(--radius-img); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-body { flex: 1; }
.news-body h3 { font-size: 17px; font-weight: 600; margin-bottom: 4px; transition: color var(--transition); }
.news-card:hover .news-body h3 { color: var(--accent); }
.news-body p {
  font-size: 14px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-meta { display: flex; align-items: center; gap: 12px; }
.news-date { font-size: 12px; color: var(--text-disabled); }
.news-cat {
  padding: 2px 10px;
  background: rgba(0, 229, 204, 0.12);
  color: var(--accent);
  font-size: 12px;
  border-radius: 50px;
}
.news-arrow { color: var(--text-disabled); font-size: 18px; transition: all var(--transition); }
.news-card:hover .news-arrow { color: var(--accent); transform: translateX(4px); }
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); font-size: 15px; }
.empty-state i { font-size: 40px; color: var(--text-disabled); margin-bottom: 16px; display: block; }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; }
.faq-layout { display: flex; gap: 48px; flex-wrap: wrap; }
.faq-intro { flex: 0 0 300px; }
.faq-intro h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.faq-intro p { color: var(--text-secondary); font-size: 15px; }
.faq-list { flex: 1; min-width: 320px; }
.accordion { border: none; background: transparent; }
.accordion-item {
  background: var(--bg-surface) !important;
  backdrop-filter: blur(12px);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-card) !important;
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}
.accordion-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--primary));
  opacity: 0;
  transition: opacity var(--transition);
}
.accordion-item.is-active::before { opacity: 1; }
.accordion-item:hover { border-color: var(--border-hover) !important; }
.accordion-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary) !important;
  padding: 20px 24px !important;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}
.accordion-title::after {
  content: '+';
  font-size: 24px;
  color: var(--accent);
  transition: transform 0.3s ease;
  position: static;
  margin-left: 16px;
}
.accordion-item.is-active .accordion-title::after { transform: rotate(45deg); }
.accordion-content { padding: 0 24px 20px; color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(90deg, rgba(0, 229, 204, 0.12), rgba(91, 140, 255, 0.12));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}
.cta-section h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.cta-section p { color: var(--text-secondary); font-size: 16px; max-width: 500px; margin: 0 auto 28px; }

/* ===== Footer ===== */
.site-footer {
  background: #070A1A;
  padding: 60px 0 0;
  border-top: 1px solid transparent;
  border-image: linear-gradient(90deg, var(--accent), transparent) 1;
}
.footer-grid { display: flex; gap: 40px; flex-wrap: wrap; padding-bottom: 40px; }
.footer-col { flex: 1; min-width: 200px; }
.footer-col .brand-logo { margin-bottom: 12px; }
.footer-col .brand-text { font-size: 18px; }
.footer-col p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; max-width: 280px; }
.footer-col h4 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { font-size: 14px; color: var(--text-secondary); transition: all var(--transition); }
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  font-size: 14px;
  transition: all var(--transition);
}
.footer-social a:hover { background: rgba(0, 229, 204, 0.15); color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-disabled);
}

/* ===== Fixed CTA Bar ===== */
.fixed-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 64px;
  background: rgba(11, 15, 36, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 999;
  display: flex;
  align-items: center;
  transform: translateY(100px);
  transition: transform 0.4s ease;
}
.fixed-cta.visible { transform: translateY(0); }
.fixed-cta .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.fixed-cta .brand-logo { pointer-events: none; }
.fixed-cta .brand-text { font-size: 18px; }
.fixed-cta-tag { font-size: 14px; color: var(--text-secondary); }
.fixed-cta .btn-primary { padding: 8px 18px; font-size: 15px; }

/* ===== Responsive ===== */
@media print {
  .site-header, .fixed-cta, .scroll-indicator { display: none !important; }
}
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .header-actions { margin-left: auto; }
  .header-search input { width: 140px; }
  .feature-grid { gap: 20px; }
  .feature-card.focus-card { transform: translateY(-8px); }
}
@media (max-width: 768px) {
  .section-pad { padding: 48px 0; }
  .hero { min-height: 560px; }
  .hero h1 { font-size: 36px; }
  .hero-sub { font-size: 16px; }
  .trust-bar .container { padding: 16px 20px; }
  .trust-item .num { font-size: 24px; }
  .showcase-row { gap: 32px; margin-bottom: 48px; }
  .showcase-row, .showcase-row.reverse { flex-direction: column-reverse; }
  .showcase-row.reverse .showcase-content { order: 2; }
  .showcase-row.reverse .showcase-media { order: 1; }
  .showcase-media, .showcase-content { min-width: 100%; }
  .footer-grid { gap: 32px; }
  .news-card { flex-direction: row; }
  .faq-layout { gap: 24px; }
  .faq-intro { flex: 0 0 100%; }
}
@media (max-width: 640px) {
  .site-header .container { gap: 10px; }
  .header-search { display: none; }
  .header-link { display: none; }
  .brand-logo .brand-text { font-size: 17px; }
  .hero h1 { font-size: 32px; }
  .hero-buttons .btn-primary, .hero-buttons .btn-secondary { width: 100%; text-align: center; }
  .hero-buttons { flex-direction: column; gap: 12px; }
  .trust-bar .container { flex-direction: column; align-items: center; text-align: center; }
  .trust-item { width: 100%; }
  .feature-grid { flex-direction: column; align-items: center; }
  .feature-card, .feature-card.focus-card { max-width: 100%; min-width: 0; transform: none; }
  .news-grid { gap: 16px; }
  .news-card { flex-direction: column; align-items: flex-start; gap: 12px; }
  .news-thumb { width: 100%; height: 120px; }
  .news-arrow { display: none; }
  .fixed-cta-tag { display: none; }
  .testimonial-grid { flex-direction: column; align-items: center; }
  .testimonial-card { max-width: 100%; }
  .footer-col { flex: 0 0 100%; }
  .logo-bar { gap: 20px; }
}

/* roulang page: category1 */
:root {
  --bg-primary: #0B0F24;
  --bg-surface: rgba(20, 27, 58, 0.72);
  --bg-surface-hover: rgba(28, 36, 76, 0.82);
  --color-primary: #5B8CFF;
  --color-accent: #00E5CC;
  --color-accent-secondary: #5B8CFF;
  --color-gold: #FFB800;
  --text-primary: #E8ECFF;
  --text-secondary: #A0A8C8;
  --text-disabled: #6A7298;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 229, 204, 0.35);
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-input: 8px;
  --radius-img: 10px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45), 0 0 24px rgba(0, 229, 204, 0.08);
  --shadow-glow: 0 0 24px rgba(0, 229, 204, 0.35);
  --shadow-glow-hover: 0 0 40px rgba(0, 229, 204, 0.55);
  --transition: 0.25s ease;
  --header-height: 64px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans", "Noto Sans CJK SC", sans-serif;
  --font-en: "Inter", "Roboto", var(--font-cn);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-cn);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text-primary); text-decoration: none; transition: color var(--transition); }
ul { list-style: none; padding: 0; margin: 0; }
button, input { font-family: inherit; font-size: inherit; }
input:focus, a:focus, button:focus { outline: 2px solid rgba(0, 229, 204, 0.6); outline-offset: 2px; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(11, 15, 36, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(11, 15, 36, 0.92);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
  max-width: 1280px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #00E5CC, #5B8CFF);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 14px;
  color: #0B0F24;
  letter-spacing: -0.5px;
  box-shadow: 0 0 18px rgba(0, 229, 204, 0.35);
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(90deg, #00E5CC, #5B8CFF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  border-radius: 8px;
  position: relative;
  font-weight: 500;
  transition: color var(--transition);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.main-nav a:hover { color: var(--text-primary); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.main-nav a.active { color: var(--text-primary); font-weight: 600; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 8px 14px;
  width: 180px;
  border: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header-search i { color: var(--text-disabled); font-size: 14px; }
.header-search input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  width: 100%;
}
.header-search input::placeholder { color: var(--text-disabled); }
.header-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 12px rgba(0, 229, 204, 0.2);
}
.header-link {
  padding: 8px 12px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}
.header-link:hover { color: var(--text-primary); }
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: linear-gradient(135deg, #00E5CC, #00C4B0);
  color: #0B0F24;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(0, 229, 204, 0.35);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 229, 204, 0.55);
  filter: brightness(1.05);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 16px rgba(0, 229, 204, 0.2);
  transform: translateY(-2px);
}
.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  width: 44px;
  height: 44px;
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ===== Banner ===== */
.section-banner {
  position: relative;
  padding: 160px 0 80px;
  background-image: linear-gradient(to bottom, rgba(11, 15, 36, 0.88), rgba(11, 15, 36, 0.75)), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  text-align: center;
  overflow: hidden;
}
.section-banner::before {
  content: "";
  position: absolute;
  top: -120px;
  left: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(91, 140, 255, 0.18), transparent 70%);
  pointer-events: none;
}
.section-banner::after {
  content: "";
  position: absolute;
  bottom: -80px;
  right: 8%;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 229, 204, 0.12), transparent 70%);
  pointer-events: none;
}
.banner-inner { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb i { font-size: 12px; color: var(--text-disabled); }
.breadcrumb .current { color: var(--text-primary); }
.section-banner h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 16px;
  letter-spacing: -0.5px;
}
.section-banner .banner-sub {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.banner-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-primary);
  backdrop-filter: blur(8px);
}
.badge-item i { color: var(--color-gold); font-size: 14px; }

/* ===== Main Content ===== */
.section-main {
  padding: 60px 0 20px;
}
.section-main .row { display: flex; gap: 32px; }
.section-main .col-main { flex: 0 0 66.666%; max-width: 66.666%; }
.section-main .col-side { flex: 0 0 33.333%; max-width: 33.333%; }
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.section-heading h2 {
  font-size: 32px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.3px;
}
.section-heading .heading-link {
  font-size: 14px;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.section-heading .heading-link i { transition: transform var(--transition); }
.section-heading .heading-link:hover i { transform: translateX(4px); }

.game-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.game-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.game-card::before {
  content: "";
  position: absolute;
  top: 0; left: 16px; right: 16px;
  height: 1px;
  background: linear-gradient(90deg, #00E5CC, transparent);
  opacity: 0.6;
}
.game-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}
.game-card .cover-wrap {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
  aspect-ratio: 16 / 9;
  background: rgba(255, 255, 255, 0.03);
}
.game-card .cover-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition); }
.game-card:hover .cover-wrap img { transform: scale(1.03); }
.game-card h3 { font-size: 18px; font-weight: 600; margin: 0 0 8px; }
.game-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin: 0 0 14px; }
.game-card .tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag-chip {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0, 229, 204, 0.12);
  color: var(--color-accent);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
}
.tag-chip.gold {
  background: rgba(255, 184, 0, 0.12);
  color: var(--color-gold);
}

/* ===== Sidebar ===== */
.side-widget {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
}
.side-widget h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}
.side-widget h3::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  border-radius: 2px;
}
.side-post-list li { padding: 12px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.04); }
.side-post-list li:last-child { border-bottom: none; }
.side-post-list a { display: block; }
.side-post-list .post-title {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 4px;
  transition: color var(--transition);
  line-height: 1.5;
}
.side-post-list a:hover .post-title { color: var(--color-accent); }
.side-post-list .post-date { font-size: 12px; color: var(--text-disabled); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-cloud a {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.tag-cloud a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 12px rgba(0, 229, 204, 0.15);
}

/* ===== Features ===== */
.section-features {
  padding: 70px 0;
}
.section-features .section-heading { text-align: center; justify-content: center; flex-direction: column; }
.section-features .section-heading .sub-title { font-size: 15px; color: var(--text-secondary); margin-top: 8px; }
.feature-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  text-align: center;
  width: calc(33.333% - 16px);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 20px; right: 20px;
  height: 1px;
  background: linear-gradient(90deg, #00E5CC, transparent);
  opacity: 0.5;
}
.feature-card.feature-focus {
  transform: translateY(-14px);
  border-color: rgba(0, 229, 204, 0.25);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 229, 204, 0.1);
}
.feature-card.feature-focus::before { opacity: 1; }
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}
.feature-card.feature-focus:hover { transform: translateY(-18px); }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(0, 229, 204, 0.1);
  border: 1px solid rgba(0, 229, 204, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 22px;
  color: var(--color-accent);
  transition: box-shadow var(--transition);
}
.feature-card:hover .feature-icon { box-shadow: 0 0 20px rgba(0, 229, 204, 0.35); }
.feature-card h3 { font-size: 20px; font-weight: 600; margin: 0 0 12px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin: 0 0 16px; }
.feature-card .feature-tip {
  font-size: 12px;
  color: var(--text-disabled);
  letter-spacing: 0.5px;
}

/* ===== Steps ===== */
.section-steps {
  padding: 70px 0;
  background: rgba(0, 0, 0, 0.15);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.steps-heading { text-align: center; margin-bottom: 48px; }
.steps-heading h2 { font-size: 32px; font-weight: 700; margin: 0 0 8px; }
.steps-heading p { font-size: 15px; color: var(--text-secondary); margin: 0; }
.steps-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step-item { text-align: center; position: relative; padding: 0 20px; }
.step-item::after {
  content: "\f054";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  top: 28px;
  right: -20px;
  color: var(--text-disabled);
  font-size: 14px;
}
.step-item:last-child::after { display: none; }
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 229, 204, 0.2), rgba(91, 140, 255, 0.2));
  border: 1px solid rgba(0, 229, 204, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 auto 18px;
  font-family: var(--font-en);
}
.step-item h3 { font-size: 18px; font-weight: 600; margin: 0 0 10px; }
.step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin: 0; }

/* ===== FAQ ===== */
.section-faq {
  padding: 70px 0;
}
.faq-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}
.faq-intro h2 { font-size: 32px; font-weight: 700; margin: 0 0 16px; }
.faq-intro p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
.accordion { list-style: none; margin: 0; padding: 0; }
.accordion-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.accordion-item.is-active {
  border-color: rgba(0, 229, 204, 0.25);
  box-shadow: 0 0 20px rgba(0, 229, 204, 0.06);
}
.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
  background: transparent;
}
.accordion-title .acc-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-secondary);
  transition: transform var(--transition), background-color var(--transition), color var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}
.accordion-item.is-active .accordion-title .acc-icon {
  transform: rotate(45deg);
  background: rgba(0, 229, 204, 0.15);
  color: var(--color-accent);
  box-shadow: 0 0 10px rgba(0, 229, 204, 0.2);
}
.accordion-content {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.accordion-content .acc-bar {
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-accent), var(--color-primary));
  position: absolute;
  left: 0;
  top: 0;
  border-radius: 0 3px 3px 0;
}
.accordion-item .accordion-content { position: relative; padding-left: 28px; }

/* ===== CTA ===== */
.section-cta {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  background: linear-gradient(90deg, rgba(0, 229, 204, 0.08), rgba(91, 140, 255, 0.08)), var(--bg-primary);
  text-align: center;
}
.section-cta::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 229, 204, 0.15), transparent 70%);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 2; }
.cta-inner h2 { font-size: 36px; font-weight: 700; margin: 0 0 12px; }
.cta-inner p { font-size: 17px; color: var(--text-secondary); margin: 0 0 32px; }
.cta-inner .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-inner .btn-primary { padding: 14px 40px; font-size: 17px; }
.cta-inner .btn-secondary { padding: 14px 40px; font-size: 17px; }

/* ===== Footer ===== */
.site-footer {
  background: #070A1A;
  border-top: 1px solid rgba(0, 229, 204, 0.2);
  padding: 60px 0 0;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 204, 0.6), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-col .brand-logo { margin-bottom: 14px; }
.footer-col p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 20px;
  max-width: 340px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 16px;
  transition: all var(--transition);
}
.footer-social a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 0 16px rgba(0, 229, 204, 0.2);
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 18px;
  color: var(--text-primary);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--text-secondary); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--color-accent); }
.footer-col ul li { font-size: 14px; color: var(--text-secondary); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p { font-size: 12px; color: var(--text-disabled); margin: 0; }

/* ===== Fixed Bottom Bar ===== */
.fixed-bar {
  position: fixed;
  bottom: 0;
  left: 0; right: 0;
  z-index: 900;
  background: rgba(11, 15, 36, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  height: 64px;
}
.fixed-bar.show { transform: translateY(0); opacity: 1; }
.fixed-bar.hide { transform: translateY(100%); opacity: 0; }
.fixed-bar .bar-info { display: flex; align-items: center; gap: 10px; }
.fixed-bar .bar-info .brand-icon { width: 30px; height: 30px; font-size: 12px; border-radius: 8px; }
.fixed-bar .bar-info .bar-name { font-size: 16px; font-weight: 600; }
.fixed-bar .bar-info .bar-sub { font-size: 13px; color: var(--text-secondary); }
.fixed-bar .btn-primary { padding: 8px 22px; font-size: 14px; border-radius: 10px; }

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .container { max-width: 100%; }
  .section-main .row { flex-direction: column; }
  .section-main .col-main, .section-main .col-side { flex: 0 0 100%; max-width: 100%; }
  .col-side { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .side-widget { margin-bottom: 0; }
  .faq-layout { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .site-header .container { padding-left: 16px; padding-right: 16px; }
  .brand-text { font-size: 18px; }
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: rgba(11, 15, 36, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: none;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 14px 16px; }
  .header-actions .header-search, .header-actions .header-link { display: none; }
  .nav-toggle { display: flex; }
  .section-banner { padding: 120px 0 60px; }
  .section-banner h1 { font-size: 32px; }
  .banner-sub { font-size: 15px; }
  .game-grid { grid-template-columns: 1fr; }
  .feature-row { flex-direction: column; }
  .feature-card { width: 100%; }
  .feature-card.feature-focus { transform: none; }
  .feature-card.feature-focus:hover { transform: translateY(-4px); }
  .steps-row { grid-template-columns: 1fr; gap: 40px; }
  .step-item::after { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .col-side { grid-template-columns: 1fr; }
  .cta-inner h2 { font-size: 28px; }
  .fixed-bar .bar-sub { display: none; }
}

/* Foundation Reset Overrides */
.button { margin: 0; }
.accordion .accordion-item .accordion-title { border: none; border-radius: 0; }
.accordion .accordion-content { border: none; background: transparent; }

/* roulang page: article */
:root {
    --bg-deep: #0B0F24;
    --surface: rgba(20, 27, 58, 0.72);
    --surface-hover: rgba(28, 36, 76, 0.82);
    --primary: #5B8CFF;
    --accent: #00E5CC;
    --amber: #FFB800;
    --text-main: #E8ECFF;
    --text-secondary: #A0A8C8;
    --text-disabled: #6A7298;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(0, 229, 204, 0.35);
    --radius-card: 16px;
    --radius-btn: 12px;
    --radius-input: 8px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.45), 0 0 24px rgba(0, 229, 204, 0.08);
    --transition: 0.25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "思源黑体", -apple-system, sans-serif;
    background: var(--bg-deep);
    color: var(--text-main);
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input { font-family: inherit; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-main); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
    color: #fff;
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    box-shadow: 0 0 24px rgba(0, 229, 204, 0.35);
    transition: all var(--transition);
    line-height: 1.2;
    min-height: 44px;
    white-space: nowrap;
}
.btn-primary:hover {
    box-shadow: 0 0 40px rgba(0, 229, 204, 0.55);
    transform: translateY(-2px);
    color: #fff;
    filter: brightness(1.08);
}
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.2;
    min-height: 44px;
    white-space: nowrap;
}
.btn-secondary:hover {
    border-color: var(--border-hover);
    color: var(--accent);
    box-shadow: 0 0 16px rgba(0, 229, 204, 0.12);
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(11, 15, 36, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    z-index: 1000;
    transition: background var(--transition);
}
.site-header.scrolled { background: rgba(11, 15, 36, 0.92); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo .brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.5px;
    box-shadow: 0 0 14px rgba(0, 229, 204, 0.25);
}
.brand-logo .brand-text { font-size: 18px; font-weight: 700; letter-spacing: 0.5px; color: var(--text-main); }
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    padding-bottom: 4px;
    position: relative;
    transition: color var(--transition);
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    border-radius: 2px;
    transition: width var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--text-main); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    border-radius: var(--radius-input);
    padding: 8px 14px;
    width: 180px;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.header-search i { color: var(--text-disabled); font-size: 14px; }
.header-search input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 14px;
    width: 100%;
}
.header-search input::placeholder { color: var(--text-disabled); }
.header-search:focus-within { border-color: var(--accent); box-shadow: 0 0 12px rgba(0, 229, 204, 0.2); }
.header-link { font-size: 14px; color: var(--text-secondary); transition: color var(--transition); }
.header-link:hover { color: var(--text-main); }
.header-actions .btn-primary { padding: 10px 20px; font-size: 14px; min-height: 40px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 22px; cursor: pointer; min-width: 44px; min-height: 44px; align-items: center; justify-content: center; }

/* ===== 面包屑 ===== */
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-secondary); margin-bottom: 24px; flex-wrap: wrap; }
.breadcrumb a { color: var(--text-secondary); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 10px; color: var(--text-disabled); }
.breadcrumb span:last-child { color: var(--text-main); font-weight: 500; }

/* ===== 文章头部区 ===== */
.article-head {
    position: relative;
    padding: 144px 0 56px;
    background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    overflow: hidden;
}
.article-head::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(11, 15, 36, 0.88) 20%, rgba(11, 15, 36, 0.72) 60%, rgba(11, 15, 36, 0.96) 100%);
}
.article-head::after {
    content: "";
    position: absolute;
    top: -80px;
    right: -80px;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(0, 229, 204, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.article-head .container { position: relative; z-index: 2; max-width: 920px; }
.article-title {
    font-size: 44px;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--text-main) 60%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.article-meta { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; font-size: 14px; color: var(--text-secondary); }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { font-size: 13px; color: var(--text-disabled); }

/* ===== 正文阅读区 ===== */
.article-layout { padding: 48px 0 16px; }
.article-content-wrap { max-width: 720px; margin: 0 auto; }
.article-content {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 48px;
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}
.article-content::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
    opacity: 0.7;
}
.article-content p {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-main);
    margin-bottom: 28px;
    word-break: break-word;
}
.article-content h2 {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    margin: 56px 0 24px;
    color: var(--text-main);
}
.article-content h3 {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.4;
    margin: 44px 0 20px;
    color: var(--text-main);
}
.article-content h4 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    margin: 36px 0 16px;
    color: var(--text-main);
}
.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: rgba(0, 229, 204, 0.05);
    padding: 20px 28px;
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
    font-style: italic;
    margin: 32px 0;
}
.article-content blockquote p { font-size: 15px; color: var(--text-secondary); margin-bottom: 0; }
.article-content img {
    max-width: 100%;
    border-radius: 10px;
    margin: 32px 0;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    height: auto;
}
.article-content figure { margin: 32px 0; }
.article-content figure img { margin-bottom: 12px; }
.article-content figcaption { font-size: 13px; color: var(--text-disabled); text-align: center; }
.article-content ul, .article-content ol {
    padding-left: 24px;
    margin: 0 0 28px;
}
.article-content ul { list-style: none; }
.article-content ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    line-height: 1.8;
    color: var(--text-secondary);
}
.article-content ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    border-radius: 50%;
}
.article-content ol li {
    margin-bottom: 10px;
    line-height: 1.8;
    color: var(--text-secondary);
}
.article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.article-content a:hover { color: var(--primary); }
.article-content pre {
    background: rgba(11, 15, 36, 0.9);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 24px;
    overflow-x: auto;
    font-family: "Cascadia Code", "Fira Code", monospace;
    font-size: 14px;
    line-height: 1.7;
    color: #c9d1ff;
    margin: 32px 0;
}
.article-content code {
    background: rgba(91, 140, 255, 0.12);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.9em;
    font-family: "Cascadia Code", "Fira Code", monospace;
    color: var(--text-main);
}
.article-content pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}
.article-content hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
    margin: 40px 0;
}
.article-content strong { color: var(--text-main); font-weight: 600; }
.article-content em { color: var(--text-secondary); }

/* ===== 空态 ===== */
.article-empty { text-align: center; padding: 80px 24px; color: var(--text-secondary); }
.article-empty .empty-icon {
    width: 72px;
    height: 72px;
    background: rgba(91, 140, 255, 0.12);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--text-disabled);
    margin-bottom: 24px;
}
.article-empty p { font-size: 17px; margin-bottom: 24px; }

/* ===== 文章底部标签与分享 ===== */
.article-bottom-meta {
    max-width: 720px;
    margin: 32px auto 0;
    padding: 28px 0;
    border-top: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(0, 229, 204, 0.08);
    border: 1px solid rgba(0, 229, 204, 0.12);
    color: var(--accent);
    font-size: 13px;
    border-radius: 999px;
    padding: 6px 14px;
    transition: all var(--transition);
}
.tag:hover { background: rgba(0, 229, 204, 0.16); border-color: var(--border-hover); }
.article-share { display: flex; align-items: center; gap: 8px; }
.share-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
    min-width: 38px;
    min-height: 38px;
}
.share-btn:hover { color: var(--accent); border-color: var(--border-hover); box-shadow: 0 0 12px rgba(0, 229, 204, 0.15); }

/* ===== 相关推荐 ===== */
.related-posts { padding: 64px 0 80px; position: relative; }
.related-posts::before {
    content: "";
    position: absolute;
    top: 0;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.related-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.related-header h2 { font-size: 32px; font-weight: 700; }
.related-header .section-line { width: 60px; height: 3px; background: linear-gradient(90deg, var(--accent), var(--primary)); border-radius: 3px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.related-card {
    border-radius: var(--radius-card);
    background: var(--surface);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all var(--transition);
    position: relative;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--border-hover); }
.related-card .related-thumb { height: 168px; overflow: hidden; position: relative; }
.related-card .related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-card .related-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(11, 15, 36, 0.6));
}
.related-card .related-info { padding: 20px 20px 24px; }
.related-card .related-info h3 { font-size: 16px; font-weight: 600; line-height: 1.5; margin-bottom: 12px; min-height: 48px; }
.related-card .related-info h3 a { color: var(--text-main); transition: color var(--transition); }
.related-card .related-info h3 a:hover { color: var(--accent); }
.related-card .related-info .related-date { font-size: 13px; color: var(--text-disabled); display: flex; align-items: center; gap: 6px; }
.related-actions { text-align: center; }

/* ===== CTA区 ===== */
.cta-section {
    position: relative;
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 229, 204, 0.08), rgba(91, 140, 255, 0.08)), var(--bg-deep);
    overflow: hidden;
    text-align: center;
}
.cta-section::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 560px;
    height: 560px;
    background: radial-gradient(circle, rgba(0, 229, 204, 0.12) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    pointer-events: none;
    border-radius: 50%;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 36px; margin-bottom: 16px; }
.cta-section p { font-size: 16px; color: var(--text-secondary); max-width: 560px; margin: 0 auto 32px; line-height: 1.7; }
.cta-section .btn-primary { padding: 14px 36px; font-size: 16px; }
.cta-section .btn-primary i { margin-left: 4px; }

/* ===== Footer ===== */
.site-footer {
    background: #070A1A;
    padding: 64px 0 0;
    border-top: 1px solid var(--border);
    position: relative;
}
.site-footer::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.5;
}
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-col p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 16px 0;
    max-width: 320px;
}
.footer-col h4 { font-size: 16px; font-weight: 600; margin-bottom: 20px; color: var(--text-main); }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 14px; color: var(--text-secondary); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 16px;
    transition: all var(--transition);
}
.footer-social a:hover { color: var(--accent); border-color: var(--border-hover); transform: translateY(-2px); }
.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}
.footer-bottom p { font-size: 12px; color: var(--text-disabled); }

/* ===== 底部固定转化条 ===== */
.bottom-fixed-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(11, 15, 36, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}
.bottom-fixed-bar.visible { transform: translateY(0); }
.bottom-fixed-bar .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.bottom-fixed-bar .bar-brand { display: flex; align-items: center; gap: 10px; }
.bottom-fixed-bar .bar-brand .brand-text { font-size: 16px; font-weight: 700; }
.bottom-fixed-bar .bar-tagline { font-size: 14px; color: var(--text-secondary); margin-left: 8px; }
.bottom-fixed-bar .btn-primary { padding: 10px 24px; font-size: 14px; min-height: 40px; }

/* ===== 滚动指示器 ===== */
.scroll-indicator {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(0, 229, 204, 0.6);
    font-size: 20px;
    animation: bounce 2s ease infinite;
    z-index: 2;
}
@keyframes bounce {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 8px); }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .main-nav {
        position: fixed;
        top: 64px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 64px);
        background: rgba(11, 15, 36, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 28px;
        gap: 24px;
        transition: right 0.3s ease;
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.4);
        border-left: 1px solid var(--border);
        z-index: 999;
    }
    .main-nav.open { right: 0; }
    .nav-toggle { display: inline-flex; }
    .header-search { width: 150px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .cta-section h2 { font-size: 30px; }
}
@media (max-width: 640px) {
    .container { padding: 0 16px; }
    .header-search, .header-link { display: none; }
    .site-header .container { gap: 8px; }
    .brand-logo .brand-text { font-size: 15px; }
    .brand-logo .brand-icon { width: 32px; height: 32px; font-size: 11px; border-radius: 8px; }
    .header-actions .btn-primary { padding: 8px 14px; font-size: 13px; }
    .article-head { padding: 110px 0 48px; }
    .article-title { font-size: 36px; }
    .article-content { padding: 28px 20px; }
    .article-content p { font-size: 16px; line-height: 1.8; }
    .article-content blockquote { padding: 16px 20px; }
    .article-meta { gap: 12px; font-size: 13px; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .cta-section h2 { font-size: 26px; }
    .cta-section p { font-size: 14px; }
    .bottom-fixed-bar .bar-tagline { display: none; }
    .bottom-fixed-bar .btn-primary { padding: 8px 16px; font-size: 13px; }
    .breadcrumb { font-size: 12px; }
    .related-header h2 { font-size: 26px; }
}
@media (min-width: 641px) and (max-width: 1024px) {
    .header-search { width: 130px; }
    .header-actions .btn-primary { padding: 9px 16px; font-size: 13px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}