/* roulang page: index */
:root {
  --primary-dark: #0D1210;
  --primary-dark-2: #111614;
  --gold: #C9A96A;
  --gold-light: #DDBD7A;
  --gold-dark: #A8894E;
  --bg-light: #F5F2EC;
  --text-dark: #1E2420;
  --text-light: #F0EDE6;
  --text-muted: #8A8F8C;
  --accent: #E4572E;
  --success: #2C7A5B;
  --border-dark: rgba(201,169,106,0.12);
  --border-light: #E3DED4;
  --radius-lg: 16px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.05);
  --shadow-card-hover: 0 8px 32px rgba(0,0,0,0.08);
  --transition: 0.3s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  background: var(--bg-light);
  color: var(--text-dark);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
section { position: relative; }

/* ===== Buttons ===== */
.btn { border-radius: var(--radius-sm); font-weight: 600; padding: 14px 32px; transition: all var(--transition); border: none; }
.btn-primary { background: var(--gold); color: var(--primary-dark); }
.btn-primary:hover { background: var(--gold-light); color: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(201,169,106,0.3); }
.btn-primary:active { background: var(--gold-dark) !important; transform: translateY(0); }
.btn-outline-gold { background: transparent; border: 1px solid var(--gold); color: var(--gold); }
.btn-outline-gold:hover { background: rgba(201,169,106,0.1); color: var(--gold-light); }
.btn-outline-gold:active { background: rgba(201,169,106,0.18); }
.btn-outline-light { background: transparent; border: 1px solid rgba(240,237,230,0.4); color: var(--text-light); }
.btn-outline-light:hover { background: rgba(255,255,255,0.08); border-color: var(--gold); color: var(--gold); }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(13,18,16,0.96);
  border-bottom: 1px solid var(--gold);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.navbar { padding: 0; min-height: 72px; }
.navbar-brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-light) !important;
  font-weight: 700; font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 36px; height: 36px; border: 2px solid var(--gold);
  border-radius: 8px; position: relative;
  display: inline-block; flex-shrink: 0;
}
.brand-mark::before {
  content: ''; position: absolute; inset: 5px;
  border: 2px solid var(--gold); border-radius: 50%;
  border-left-color: transparent;
  animation: spin 8s linear infinite;
}
.brand-mark::after {
  content: ''; position: absolute; left: 50%; bottom: 5px;
  width: 2px; height: 8px; background: var(--gold);
  transform: translateX(-50%);
}
@keyframes spin { to { transform: rotate(360deg); } }
.brand-text { font-size: 1.3rem; }
.brand-text .gold { color: var(--gold); }
.navbar-nav { gap: 4px; }
.navbar-nav .nav-link {
  color: rgba(240,237,230,0.85) !important;
  font-weight: 500; padding: 8px 16px !important;
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--transition);
}
.navbar-nav .nav-link::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  width: 0; height: 2px; background: var(--gold);
  transform: translateX(-50%);
  transition: width var(--transition);
}
.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
  color: var(--gold) !important;
}
.navbar-nav .nav-link:hover::after, .navbar-nav .nav-link.active::after {
  width: 24px;
}
.nav-right { display: flex; align-items: center; gap: 16px; }
.countdown {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-light); font-size: 0.85rem;
}
.cd-label { color: var(--text-muted); }
.cd-time { font-family: var(--font-serif); font-weight: 700; color: var(--accent); letter-spacing: 1px; }
.cd-live { display: flex; align-items: center; gap: 5px; color: var(--text-muted); font-size: 0.75rem; }
.cd-live .dot { width: 6px; height: 6px; background: var(--success); border-radius: 50%; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: 0.4 } }
.navbar-toggler { border: none; background: transparent; padding: 8px; }
.navbar-toggler-icon {
  width: 24px; height: 2px; background: var(--gold);
  position: relative; display: inline-block;
  box-shadow: 0 8px 0 var(--gold), 0 -8px 0 var(--gold);
}
.navbar-toggler:focus { box-shadow: none; }

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex; align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  position: relative;
  padding-top: 72px;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(13,18,16,0.85) 0%, rgba(13,18,16,0.35) 100%);
}
.hero-content { position: relative; z-index: 2; width: 100%; }
.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 700;
  color: var(--text-light);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero h1 .gold-text { color: var(--gold); }
.hero-sub {
  font-size: 1.1rem; color: rgba(240,237,230,0.85);
  max-width: 500px; margin-bottom: 32px;
  line-height: 1.6;
}
.hero-cta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 5px;
  border: 1px solid var(--gold); color: var(--gold);
  border-radius: var(--radius-sm); padding: 6px 14px;
  font-size: 0.8rem; font-weight: 500;
  background: rgba(201,169,106,0.08);
  margin-left: 8px;
}
.hero-info-bar {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid var(--border-dark);
  padding: 18px 0;
}
.hero-info-bar .container {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.info-item {
  color: rgba(240,237,230,0.8); font-size: 0.9rem;
  font-weight: 500; letter-spacing: 1px;
}
.info-item span { color: var(--gold); margin: 0 12px; }

/* ===== Sections ===== */
.section-padding { padding-top: 96px; padding-bottom: 96px; }
.section-header { margin-bottom: 56px; }
.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700; letter-spacing: -0.02em;
  color: var(--text-dark);
  position: relative;
  margin-bottom: 12px;
}
.section-header h2::after {
  content: ''; display: block; width: 48px; height: 3px;
  background: var(--gold); margin-top: 12px;
  border-radius: 2px;
}
.section-header p { color: var(--text-muted); font-size: 0.95rem; max-width: 600px; }
.section-header.center { text-align: center; }
.section-header.center h2::after { margin-left: auto; margin-right: auto; }
.section-header.center p { margin-left: auto; margin-right: auto; }

/* ===== Features ===== */
.features-section { background: var(--bg-light); }
.feature-card {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); padding: 32px;
  height: 100%; position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  border-top: 2px solid transparent;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card.large { background: linear-gradient(135deg, #fff 0%, #FAF8F4 100%); }
.feature-icon {
  width: 48px; height: 48px; border: 1.5px solid var(--gold);
  border-radius: var(--radius-md); display: flex;
  align-items: center; justify-content: center;
  color: var(--gold); font-size: 1.2rem;
  margin-bottom: 20px; background: rgba(201,169,106,0.06);
}
.feature-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; line-height: 1.6; }
.feature-link {
  color: var(--gold-dark); font-size: 0.85rem; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
  transition: gap var(--transition);
}
.feature-link:hover { gap: 14px; color: var(--gold-dark); }
.features-grid .row { --bs-gutter-x: 24px; --bs-gutter-y: 24px; }

/* ===== Scenarios ===== */
.scenarios-section { background: var(--primary-dark); }
.scenario-block { padding: 64px 0; border-bottom: 1px solid var(--border-dark); }
.scenario-block:last-child { border-bottom: none; }
.scenario-img {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid rgba(201,169,106,0.2);
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
.scenario-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform 0.5s ease; }
.scenario-img:hover img { transform: scale(1.03); }
.scenario-num {
  font-family: var(--font-serif);
  font-size: 4rem; font-weight: 700;
  color: rgba(201,169,106,0.25);
  line-height: 1; margin-bottom: 10px;
}
.scenarios-section .section-header h2 { color: var(--text-light); }
.scenarios-section .section-header p { color: rgba(240,237,230,0.6); }
.scenario-title { font-size: 1.4rem; font-weight: 600; color: var(--text-light); margin-bottom: 20px; }
.scenario-points { margin: 0; padding: 0; }
.scenario-points li {
  padding-left: 20px; position: relative; margin-bottom: 16px;
  border-left: 2px solid var(--gold);
  padding: 8px 0 8px 20px;
}
.scenario-points .point-title { font-weight: 600; color: var(--text-light); font-size: 0.95rem; }
.scenario-points .point-desc { color: var(--text-muted); font-size: 0.85rem; line-height: 1.5; }
.scenario-cta { margin-top: 24px; }

/* ===== Testimonials ===== */
.testimonials-section {
  background: var(--primary-dark-2);
  border-top: 1px solid var(--border-dark);
}
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 32px; margin-bottom: 64px; text-align: center;
}
.stat-num {
  font-family: var(--font-serif);
  font-size: 3rem; font-weight: 700;
  color: var(--gold); line-height: 1.2;
}
.stat-label { color: var(--text-muted); font-size: 0.85rem; margin-top: 6px; }
.testimonial-card {
  background: rgba(255,255,255,0.03);
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 28px; display: flex; gap: 20px;
  height: 100%;
  transition: background var(--transition);
}
.testimonial-card:hover { background: rgba(255,255,255,0.05); }
.testimonial-avatar {
  width: 56px; height: 56px; border-radius: 50%;
  object-fit: cover; flex-shrink: 0;
  border: 2px solid var(--gold);
}
.testimonial-text { font-size: 0.9rem; color: rgba(240,237,230,0.85); line-height: 1.6; margin-bottom: 8px; }
.testimonial-author { color: var(--gold); font-size: 0.85rem; font-weight: 600; }

/* ===== Pricing ===== */
.pricing-section { background: var(--bg-light); }
.pricing-card {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px 32px; height: 100%;
  display: flex; flex-direction: column;
  border: 1px solid rgba(0,0,0,0.03);
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.pricing-card:hover { box-shadow: var(--shadow-card-hover); }
.pricing-card.featured {
  background: var(--primary-dark);
  border: 1px solid var(--gold);
  transform: scale(1.04);
  box-shadow: 0 16px 48px rgba(13,18,16,0.4);
  z-index: 2;
}
.pricing-card.featured:hover { transform: scale(1.04); }
.pricing-ribbon {
  position: absolute; top: -1px; left: 24px;
  background: var(--accent); color: #fff;
  font-size: 0.75rem; font-weight: 700;
  padding: 4px 14px; border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  letter-spacing: 1px;
}
.pricing-name { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.pricing-price {
  font-family: var(--font-serif);
  font-size: 2.5rem; font-weight: 700;
  color: var(--gold); line-height: 1.2;
  margin-bottom: 4px;
}
.pricing-price small { font-size: 0.6em; color: var(--text-muted); }
.pricing-desc { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 24px; }
.pricing-features { list-style: none; padding: 0; margin: 0 0 32px; flex-grow: 1; }
.pricing-features li {
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 12px; font-size: 0.9rem;
  color: var(--text-dark);
}
.pricing-card.featured .pricing-features li { color: var(--text-light); }
.pricing-features li i { color: var(--gold-dark); margin-top: 3px; }
.pricing-card.featured .pricing-features li i { color: var(--gold); }
.pricing-card.featured .pricing-name { color: var(--text-light); }
.pricing-card.featured .pricing-desc { color: var(--text-muted); }
.pricing-row { align-items: center; }
.pricing-row .col-lg-4 { margin-bottom: 24px; }

/* ===== News ===== */
.news-section { background: var(--bg-light); }
.news-list { display: flex; flex-direction: column; }
.news-card {
  display: flex; align-items: center; gap: 24px;
  padding: 24px 16px; border-radius: var(--radius-md);
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition), border-color var(--transition);
  position: relative;
}
.news-card:first-child { border-top: 1px solid var(--border-light); }
.news-card::before {
  content: ''; position: absolute; left: 0; top: 10%; bottom: 10%;
  width: 2px; background: var(--gold);
  opacity: 0; transition: opacity var(--transition);
}
.news-card:hover { background: rgba(201,169,106,0.06); }
.news-card:hover::before { opacity: 1; }
.news-date {
  width: 72px; height: 72px; flex-shrink: 0;
  background: var(--primary-dark); border-radius: var(--radius-md);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--gold);
}
.news-date .day { font-family: var(--font-serif); font-size: 1.8rem; font-weight: 700; line-height: 1; }
.news-date .month { font-size: 0.8rem; margin-top: 4px; }
.news-content { flex: 1; min-width: 0; }
.news-content h3 {
  font-size: 1.1rem; font-weight: 600; color: var(--text-dark);
  margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: color var(--transition);
}
.news-card:hover .news-content h3 { color: var(--gold-dark); }
.news-content p {
  font-size: 0.85rem; color: var(--text-muted);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin: 0;
}
.news-meta { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.news-meta .badge {
  background: rgba(201,169,106,0.12); color: var(--gold-dark);
  font-weight: 500; font-size: 0.75rem; padding: 5px 12px;
  border-radius: var(--radius-sm); white-space: nowrap;
}
.news-arrow {
  width: 36px; height: 36px; border: 1px solid var(--gold);
  border-radius: 50%; display: flex;
  align-items: center; justify-content: center;
  color: var(--gold); font-size: 0.9rem;
  transition: all var(--transition);
}
.news-card:hover .news-arrow { background: var(--gold); color: var(--primary-dark); }
.empty-state {
  border: 2px dashed #C9C5BC; border-radius: var(--radius-lg);
  padding: 60px 20px; text-align: center;
  background: rgba(0,0,0,0.02);
}
.empty-state i { font-size: 2.5rem; color: #B8B2A8; margin-bottom: 16px; }
.empty-state p { color: var(--text-muted); font-size: 0.9rem; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-light); }
.accordion { --bs-accordion-border-width: 0; }
.accordion-item {
  background: transparent !important;
  border: none !important;
  border-bottom: 1px solid var(--border-light) !important;
  border-radius: 0 !important;
}
.accordion-button {
  background: transparent !important;
  box-shadow: none !important;
  padding: 20px 0;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-dark);
  border: none !important;
  transition: color var(--transition);
}
.accordion-button:not(.collapsed) { color: var(--gold-dark) !important; }
.accordion-button::after {
  background-image: none;
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  content: '\f067';
  color: var(--gold);
  transform: none;
  width: auto; height: auto;
  transition: transform 0.3s ease;
  display: flex; align-items: center; justify-content: center;
}
.accordion-button:not(.collapsed)::after {
  content: '\f00d';
  transform: rotate(180deg);
  color: var(--gold);
}
.accordion-body {
  padding: 0 0 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.faq-contact {
  background: var(--primary-dark);
  border-radius: var(--radius-lg);
  padding: 32px; color: var(--text-light);
}
.faq-contact h3 { font-size: 1.2rem; margin-bottom: 10px; }
.faq-contact p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 16px; }

/* ===== CTA Banner ===== */
.cta-banner {
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  position: relative;
  padding: 100px 0;
  text-align: center;
}
.cta-banner::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(13,18,16,0.75);
}
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--text-light); font-weight: 700;
  margin-bottom: 16px; letter-spacing: -0.02em;
}
.cta-banner h2 .gold-text { color: var(--gold); }
.cta-banner p { color: rgba(240,237,230,0.7); font-size: 1rem; max-width: 500px; margin: 0 auto 32px; }
.cta-banner .btn { margin: 0 8px; }

/* ===== Footer ===== */
.site-footer { background: var(--primary-dark); border-top: 2px solid var(--gold); padding: 64px 0 0; }
.footer-brand { margin-bottom: 20px; }
.footer-brand .brand-text { font-size: 1.4rem; }
.footer-desc { color: var(--text-muted); font-size: 0.85rem; margin-top: 16px; max-width: 280px; }
.footer-col h4 {
  color: var(--gold); font-size: 0.9rem; font-weight: 600;
  margin-bottom: 20px; letter-spacing: 0.05em;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-muted); font-size: 0.85rem; }
.footer-col ul li a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 20px 0; margin-top: 48px;
  color: var(--text-muted); font-size: 0.8rem;
  text-align: center;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--gold); }

/* ===== Animations ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .fade-up { opacity: 1; transform: none; }
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .hero { min-height: 70vh; }
  .navbar-collapse {
    background: rgba(13,18,16,0.98);
    padding: 20px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border-bottom: 1px solid var(--gold);
  }
  .navbar-nav { gap: 4px; margin-bottom: 16px; }
  .nav-right { flex-direction: column; align-items: stretch; gap: 12px; }
  .countdown { justify-content: center; }
  .pricing-card.featured { transform: none; }
  .pricing-card.featured:hover { transform: none; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .scenario-block { padding: 48px 0; }
  .section-padding { padding-top: 64px; padding-bottom: 64px; }
}
@media (max-width: 767.98px) {
  .hero { min-height: 60vh; }
  .hero-info-bar .container { justify-content: center; gap: 8px; }
  .info-item span { display: none; }
  .section-padding { padding-top: 48px; padding-bottom: 48px; }
  .section-header { margin-bottom: 32px; }
  .scenario-block { padding: 32px 0; }
  .scenario-img { margin-bottom: 24px; }
  .news-card { flex-wrap: wrap; gap: 12px; }
  .news-date { width: 56px; height: 56px; }
  .news-date .day { font-size: 1.4rem; }
  .news-meta { width: 100%; justify-content: space-between; padding-left: 68px; }
  .countdown { display: none !important; }
  .hero-cta .btn { width: 100%; text-align: center; }
  .hero-badge { margin-left: 0; }
  .cta-banner { padding: 64px 0; }
  .footer-bottom { padding: 16px 0; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-num { font-size: 2rem; }
  .testimonial-card { flex-direction: column; }
}

/* roulang page: category1 */
:root {
    --dark: #0D1210;
    --gold: #C9A96A;
    --gold-light: #DDBD7A;
    --gold-dark: #A8894E;
    --light: #F5F2EC;
    --text-dark: #1E2420;
    --text-light: #F0EDE6;
    --text-muted: #8A8F8C;
    --accent: #E4572E;
    --border-dark: rgba(201, 169, 106, 0.12);
    --border-light: #E3DED4;
    --radius-lg: 16px;
    --radius-md: 8px;
    --radius-sm: 4px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.08);
    --space-section: 96px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-dark);
    background: #fff;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--gold-dark);
    text-decoration: none;
    transition: color .3s ease;
}

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

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

.container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
}

section {
    position: relative;
}

/* ===== Header / Nav ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 72px;
    background: rgba(13, 18, 16, 0.85);
    border-bottom: 1px solid transparent;
    transition: background .3s ease, border-color .3s ease;
}

.site-header.scrolled {
    background: rgba(13, 18, 16, 0.96);
    border-bottom-color: var(--gold);
}

.site-header .navbar {
    padding: 0;
    height: 72px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0;
    font-weight: 700;
    font-size: 1.35rem;
    color: var(--text-light) !important;
    letter-spacing: -0.02em;
}

.brand-mark {
    width: 34px;
    height: 34px;
    border: 2px solid var(--gold);
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
    background: radial-gradient(circle at 30% 30%, rgba(201, 169, 106, 0.3), transparent 60%);
}

.brand-mark::before {
    content: '';
    position: absolute;
    inset: 5px;
    border-radius: 50%;
    border: 1px solid rgba(201, 169, 106, 0.5);
}

.brand-mark::after {
    content: '';
    position: absolute;
    left: 8px;
    right: 8px;
    top: 50%;
    height: 1px;
    background: var(--gold);
    transform: rotate(-30deg);
    box-shadow: 0 0 6px rgba(201, 169, 106, 0.6);
}

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

.navbar-toggler {
    border: 1px solid rgba(201, 169, 106, 0.5);
    background: transparent;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 2px rgba(201, 169, 106, 0.3);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(201,169,106,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-nav {
    gap: 6px;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 0;
    margin: 0 12px;
    border-bottom: 2px solid transparent;
    transition: color .3s ease, border-color .3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--gold-light);
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link.active:hover {
    color: var(--gold-light);
    border-bottom-color: var(--gold);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 18px;
}

.countdown {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.cd-label {
    font-size: 0.8rem;
    color: var(--gold);
}

.cd-time {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 0.9rem;
    color: var(--accent);
    letter-spacing: 1px;
    font-weight: 700;
}

.cd-live {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    color: #2C7A5B;
}

.cd-live .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #2C7A5B;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ===== Buttons ===== */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all .3s ease;
    padding: 12px 28px;
    font-size: 0.95rem;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--gold);
    color: var(--dark);
    border-color: var(--gold);
    padding: 14px 32px;
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--gold-light);
    border-color: var(--gold-light);
    color: var(--dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(201, 169, 106, 0.3);
}

.btn-primary:active {
    background: var(--gold-dark) !important;
    border-color: var(--gold-dark) !important;
    transform: translateY(0);
}

.btn-outline-gold {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
}

.btn-outline-gold:hover,
.btn-outline-gold:focus {
    background: rgba(201, 169, 106, 0.1);
    color: var(--gold-light);
    border-color: var(--gold-light);
}

.btn-outline-gold:active {
    background: rgba(201, 169, 106, 0.18) !important;
    color: var(--gold-light) !important;
}

/* ===== Page Banner ===== */
.page-banner {
    min-height: 440px;
    display: flex;
    align-items: center;
    background-image: url('/assets/images/coverpic/cover-1.webp');
    background-size: cover;
    background-position: center;
    background-color: var(--dark);
    position: relative;
    padding: 120px 0 60px;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, #0D1210 60%, rgba(13, 18, 16, 0.55) 100%);
}

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

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 24px;
}

.breadcrumb-nav a {
    color: rgba(255, 255, 255, 0.6);
}

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

.breadcrumb-nav .sep {
    color: var(--gold);
}

.breadcrumb-nav .current {
    color: var(--gold);
}

.page-banner h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    line-height: 1.2;
}

.page-banner h1 .highlight {
    color: var(--gold);
}

.page-banner .lead {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.78);
    max-width: 560px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.banner-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== Main Content Two Column ===== */
.content-section {
    background: var(--light);
    padding: var(--space-section) 0;
}

.content-main {
    padding-right: 32px;
}

.content-main .lead-text {
    font-size: 1.05rem;
    color: #4a4f4b;
    line-height: 1.8;
    margin-bottom: 32px;
}

.content-main h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
    position: relative;
    padding-left: 16px;
}

.content-main h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: var(--gold);
    border-radius: 2px;
}

.content-main p {
    color: #4a4f4b;
    line-height: 1.75;
    margin-bottom: 24px;
}

.content-main .section-sub {
    padding-left: 16px;
    margin-bottom: 28px;
}

/* Sidebar Cards */
.sidebar-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    margin-bottom: 24px;
    transition: all .3s ease;
    border-top: 2px solid transparent;
}

.sidebar-card:hover {
    box-shadow: var(--shadow-hover);
    border-top-color: var(--gold);
    transform: translateY(-3px);
}

.sidebar-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
}

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

.sidebar-card .card-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.sidebar-card .card-body p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 14px;
}

.sidebar-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--gold-dark);
    font-size: 0.875rem;
    font-weight: 600;
    transition: gap .3s ease;
}

.sidebar-card .card-link:hover {
    gap: 12px;
    color: var(--gold);
}

/* ===== Process Section ===== */
.process-section {
    background: var(--dark);
    padding: var(--space-section) 0;
}

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

.section-head .eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--gold);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 600;
}

.section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-head .section-line {
    width: 48px;
    height: 3px;
    background: var(--gold);
    margin: 0 auto 16px;
    border-radius: 2px;
}

.section-head p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    max-width: 560px;
    margin: 0 auto;
}

.process-section .container {
    max-width: 1200px;
}

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

.process-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    position: relative;
    transition: all .3s ease;
}

.process-card:hover {
    border-color: rgba(201, 169, 106, 0.4);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
}

.process-card .step-num {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 2.5rem;
    color: var(--gold);
    opacity: 0.7;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 20px;
    display: block;
}

.process-card .step-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(201, 169, 106, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--gold);
    font-size: 1.3rem;
}

.process-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 10px;
}

.process-card p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
    margin: 0;
}

/* ===== Notes Section ===== */
.notes-section {
    background: var(--light);
    padding: var(--space-section) 0;
}

.notes-section .section-head h2 {
    color: var(--text-dark);
}

.notes-section .section-head p {
    color: var(--text-muted);
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.note-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: #fff;
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition: all .3s ease;
}

.note-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.note-item .note-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(201, 169, 106, 0.15);
    color: var(--gold-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.note-item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.note-item p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

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

.faq-layout {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 48px;
    max-width: 1100px;
    margin: 0 auto;
}

.faq-left h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.faq-left .section-line {
    width: 48px;
    height: 3px;
    background: var(--gold);
    margin-bottom: 20px;
    border-radius: 2px;
}

.faq-left p {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.faq-left .faq-contact {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gold-dark);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color .3s ease;
}

.faq-left .faq-contact:hover {
    color: var(--gold);
}

.accordion {
    --bs-accordion-border-width: 0;
    --bs-accordion-border-radius: 0;
    --bs-accordion-inner-border-radius: 0;
    --bs-accordion-bg: transparent;
    --bs-accordion-btn-focus-box-shadow: none;
}

.accordion-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-light);
    border-radius: 0 !important;
}

.accordion-button {
    background: transparent;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1rem;
    padding: 20px 40px 20px 0;
    box-shadow: none !important;
    position: relative;
}

.accordion-button::after {
    background-image: none;
    content: '+';
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--gold);
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: auto;
    height: auto;
    transition: transform .3s ease;
}

.accordion-button:not(.collapsed) {
    color: var(--gold);
    background: transparent;
}

.accordion-button:not(.collapsed)::after {
    transform: translateY(-50%) rotate(45deg);
    color: var(--gold);
}

.accordion-button:focus {
    outline: none;
    box-shadow: none;
}

.accordion-body {
    padding: 0 40px 20px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ===== CTA Banner ===== */
.cta-section {
    padding: 80px 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    background-color: var(--dark);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(13, 18, 16, 0.75);
}

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

.cta-section h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.6rem);
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    max-width: 500px;
    margin: 0 auto 32px;
}

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

/* ===== Footer ===== */
.site-footer {
    background: var(--dark);
    border-top: 2px solid var(--gold);
    padding: 64px 0 0;
}

.site-footer .footer-brand {
    margin-bottom: 16px;
}

.site-footer .footer-desc {
    color: #9AA19E;
    font-size: 0.875rem;
    line-height: 1.7;
    margin-top: 16px;
    max-width: 320px;
}

.site-footer .footer-col h4 {
    color: var(--gold);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.site-footer .footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.site-footer .footer-col ul li {
    margin-bottom: 12px;
}

.site-footer .footer-col ul li a {
    color: #9AA19E;
    font-size: 0.875rem;
    transition: color .3s ease;
}

.site-footer .footer-col ul li a:hover {
    color: var(--gold);
}

.footer-bottom {
    border-top: 1px solid var(--border-dark);
    margin-top: 48px;
    padding: 20px 0;
    text-align: center;
    color: #9AA19E;
    font-size: 0.8rem;
}

.footer-bottom a {
    color: var(--gold);
    margin: 0 4px;
}

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

/* ===== Fade Up Animation ===== */
.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease-out, transform .6s ease-out;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 991px) {
    :root {
        --space-section: 64px;
    }

    .navbar-collapse {
        background: var(--dark);
        padding: 16px 24px 24px;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        border-bottom: 1px solid var(--border-dark);
    }

    .navbar-nav {
        margin: 12px 0;
    }

    .navbar-nav .nav-link {
        padding: 10px 0;
        margin: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-right {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .countdown {
        justify-content: center;
    }

    .nav-right .btn {
        width: 100%;
    }

    .page-banner {
        min-height: 380px;
        padding: 110px 0 50px;
    }

    .content-main {
        padding-right: 0;
        margin-bottom: 40px;
    }

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

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

@media (max-width: 767px) {
    :root {
        --space-section: 48px;
    }

    .site-header {
        height: 64px;
    }

    .site-header .navbar {
        height: 64px;
    }

    .brand-text {
        font-size: 1.1rem;
    }

    .page-banner {
        min-height: 320px;
        padding: 100px 0 40px;
    }

    .page-banner h1 {
        font-size: 1.6rem;
    }

    .page-banner .lead {
        font-size: 0.9rem;
    }

    .banner-actions {
        flex-direction: column;
        align-items: flex-start;
    }

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

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

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

    .content-main h2 {
        font-size: 1.3rem;
    }

    .sidebar-card img {
        height: 140px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .footer-bottom {
        font-size: 0.75rem;
        padding: 16px 0;
    }
}

@media (max-width: 520px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .process-card {
        padding: 24px 20px;
    }

    .note-item {
        padding: 20px 16px;
    }

    .accordion-button {
        font-size: 0.9rem;
        padding: 16px 36px 16px 0;
    }

    .accordion-body {
        padding: 0 32px 16px 0;
        font-size: 0.85rem;
    }

    .cta-section h2 {
        font-size: 1.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .fade-up {
        opacity: 1;
        transform: none;
    }
}

/* roulang page: article */
:root {
    --primary: #0D1210;
    --accent: #C9A96A;
    --accent-hover: #DDBD7A;
    --accent-active: #A8894E;
    --cream: #F5F2EC;
    --text-dark: #1E2420;
    --text-light: #F0EDE6;
    --text-muted: #8A8F8C;
    --warning: #E4572E;
    --success: #2C7A5B;
    --line-dark: rgba(201,169,106,.12);
    --line-light: #E3DED4;
    --radius-lg: 16px;
    --radius-md: 8px;
    --radius-sm: 4px;
    --shadow-sm: 0 4px 24px rgba(0,0,0,.05);
    --shadow-md: 0 8px 32px rgba(0,0,0,.08);
    --transition: .3s ease;
    --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
    --font-serif: Georgia,'Times New Roman',serif;
    --container: 1200px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background: var(--cream);
    color: var(--text-dark);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .3s ease; }
ul, ol { list-style: none; padding: 0; }
.container { max-width: var(--container); padding-left: 24px; padding-right: 24px; }

.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: transparent;
    transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
    background: rgba(13,18,16,.96);
    box-shadow: 0 1px 0 rgba(201,169,106,.25);
}
.site-header .navbar {
    min-height: 72px;
    padding: 12px 0;
}
.navbar-brand {
    display: flex;
    align-items: center;
    padding: 0;
}
.brand-mark {
    width: 38px;
    height: 38px;
    border: 2px solid var(--accent);
    border-radius: 50% 0 50% 50%;
    position: relative;
    margin-right: 10px;
    transform: rotate(-15deg);
    flex-shrink: 0;
}
.brand-mark::after {
    content: '';
    position: absolute;
    inset: 6px;
    border: 1.5px solid rgba(201,169,106,.5);
    border-radius: 50% 0 50% 50%;
}
.brand-text {
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: var(--text-light);
    white-space: nowrap;
}
.navbar-nav {
    gap: 8px;
}
.navbar-nav .nav-link {
    color: rgba(240,237,230,.78);
    font-weight: 500;
    font-size: .95rem;
    padding: 8px 18px;
    position: relative;
    transition: color .3s ease;
    white-space: nowrap;
}
.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    left: 18px; right: 18px; bottom: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .3s ease;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--text-light);
}
.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    transform: scaleX(1);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 14px;
}
.countdown {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .8125rem;
    padding: 6px 14px;
    border: 1px solid rgba(201,169,106,.18);
    border-radius: 50px;
    background: rgba(13,18,16,.3);
}
.cd-label { color: rgba(240,237,230,.55); }
.cd-time {
    font-family: var(--font-serif);
    color: var(--accent);
    font-size: .9rem;
    letter-spacing: .05em;
}
.cd-live {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: #7FC8A6;
    font-size: .75rem;
}
.cd-live .dot {
    width: 6px; height: 6px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .4; }
}

.btn-primary {
    background: var(--accent);
    color: var(--primary);
    font-weight: 600;
    border: none;
    padding: 13px 30px;
    border-radius: var(--radius-sm);
    transition: all .3s ease;
}
.btn-primary:hover {
    background: var(--accent-hover);
    color: var(--primary);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(201,169,106,.25);
}
.btn-primary:active {
    background: var(--accent-active);
    transform: translateY(0);
}
.btn-outline {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 12px 29px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all .3s ease;
}
.btn-outline:hover {
    background: rgba(201,169,106,.1);
    color: var(--accent-hover);
    transform: translateY(-1px);
}
.btn-outline:active {
    background: rgba(201,169,106,.18);
    transform: translateY(0);
}
.nav-right .btn {
    padding: 9px 22px;
    font-size: .875rem;
}

.navbar-toggler {
    border: 1px solid rgba(201,169,106,.35);
    background: transparent;
    border-radius: var(--radius-md);
    padding: 4px 10px;
}
.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(201,169,106,.2);
    border-color: var(--accent);
}
.navbar-toggler-icon {
    width: 1.4em;
    height: 1.4em;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28201, 169, 106, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.article-hero {
    background:
        linear-gradient(90deg, rgba(13,18,16,.95) 0%, rgba(13,18,16,.72) 55%, rgba(13,18,16,.5) 100%),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 150px 0 76px;
    color: var(--text-light);
    border-bottom: 1px solid var(--line-dark);
}
.article-breadcrumb {
    margin-bottom: 36px;
}
.breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}
.breadcrumb-item {
    font-size: .875rem;
    color: rgba(240,237,230,.6);
}
.breadcrumb-item a {
    color: rgba(240,237,230,.6);
    transition: color .3s;
}
.breadcrumb-item a:hover { color: var(--accent); }
.breadcrumb-item.active { color: var(--accent); }
.breadcrumb-item + .breadcrumb-item::before {
    color: rgba(240,237,230,.35);
    content: '›';
    padding: 0 10px;
}
.article-category-badge {
    display: inline-block;
    padding: 5px 16px;
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 50px;
    font-size: .8125rem;
    margin-bottom: 18px;
    letter-spacing: .02em;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 18px;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: .875rem;
    color: rgba(240,237,230,.65);
}
.meta-item i { color: var(--accent); }
.article-hero h1 {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    max-width: 920px;
    margin-bottom: 16px;
}
.article-intro {
    font-size: 1rem;
    color: rgba(240,237,230,.7);
    max-width: 680px;
    line-height: 1.8;
}

.article-body-section {
    background: var(--cream);
    padding: 80px 0 72px;
}
.article-content-wrap {
    max-width: 760px;
    margin: 0 auto;
}
.article-content {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 56px 64px;
    box-shadow: var(--shadow-sm);
    font-size: 1rem;
}
.article-content p {
    line-height: 1.8;
    letter-spacing: .01em;
    color: var(--text-dark);
    margin: 0 0 1.2em;
}
.article-content h2,
.article-content h3,
.article-content h4 {
    font-weight: 700;
    color: var(--primary);
    margin: 1.6em 0 .6em;
    line-height: 1.4;
    padding-left: 14px;
    border-left: 3px solid var(--accent);
}
.article-content h2 { font-size: 1.45rem; }
.article-content h3 { font-size: 1.2rem; }
.article-content h4 { font-size: 1.05rem; }
.article-content img {
    max-width: 100%;
    border-radius: 12px;
    margin: 1.5em auto;
    box-shadow: 0 4px 20px rgba(0,0,0,.06);
}
.article-content blockquote {
    border-left: 3px solid var(--accent);
    background: var(--cream);
    padding: 16px 22px;
    color: var(--text-muted);
    border-radius: 0 8px 8px 0;
    margin: 1.5em 0;
    font-style: normal;
}
.article-content blockquote p {
    margin-bottom: 0;
    color: var(--text-muted);
}
.article-content ul,
.article-content ol {
    padding-left: 1.4em;
    margin: 1em 0 1.2em;
    line-height: 1.8;
}
.article-content ul {
    list-style: disc;
}
.article-content ol {
    list-style: decimal;
}
.article-content ul li,
.article-content ol li {
    margin-bottom: .4em;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: .9375rem;
}
.article-content table th,
.article-content table td {
    border: 1px solid var(--line-light);
    padding: 12px 16px;
    text-align: left;
}
.article-content table th {
    background: var(--cream);
    font-weight: 600;
    color: var(--primary);
}
.article-content a {
    color: var(--accent);
    border-bottom: 1px solid transparent;
}
.article-content a:hover {
    border-bottom-color: var(--accent);
}
.article-content code {
    background: var(--cream);
    border: 1px solid var(--line-light);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: .875rem;
    color: var(--accent-active);
}
.article-content pre {
    background: var(--primary);
    color: var(--text-light);
    padding: 20px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 1.5em 0;
}
.article-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
}

.article-bottom {
    max-width: 760px;
    margin: 28px auto 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    padding: 20px 0;
    border-top: 1px solid var(--line-light);
    border-bottom: 1px solid var(--line-light);
}
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.tag {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid #D8D2C6;
    border-radius: 50px;
    font-size: .8125rem;
    color: var(--text-muted);
    transition: all .3s;
}
.tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(201,169,106,.06);
}
.share-list {
    display: flex;
    align-items: center;
    gap: 10px;
}
.share-label {
    font-size: .875rem;
    color: var(--text-muted);
}
.share-link {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #D8D2C6;
    border-radius: 50%;
    color: var(--text-muted);
    font-size: .9rem;
    transition: all .3s;
}
.share-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.not-found {
    max-width: 640px;
    margin: 60px auto;
    text-align: center;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 72px 40px;
    box-shadow: var(--shadow-sm);
    border: 1px dashed var(--line-light);
}
.nf-icon {
    width: 76px;
    height: 76px;
    margin: 0 auto 22px;
    border-radius: 50%;
    background: rgba(201,169,106,.1);
    color: var(--accent);
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.not-found h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.not-found p {
    color: var(--text-muted);
    margin-bottom: 26px;
}

.related-section {
    background: #fff;
    padding: 96px 0;
    border-top: 1px solid var(--line-light);
}
.section-heading {
    text-align: center;
    margin-bottom: 48px;
}
.section-heading h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}
.section-line {
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent);
    margin: 14px auto 0;
    border-radius: 2px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.related-card {
    background: var(--cream);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid transparent;
    box-shadow: var(--shadow-sm);
    transition: all .4s ease;
    height: 100%;
    display: block;
}
.related-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: rgba(201,169,106,.3);
}
.related-media {
    aspect-ratio: 16/10;
    overflow: hidden;
}
.related-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.related-card:hover .related-media img {
    transform: scale(1.04);
}
.related-body {
    padding: 22px 24px 26px;
}
.related-body h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.5;
    transition: color .3s;
}
.related-card:hover .related-body h3 {
    color: var(--accent);
}
.related-meta {
    font-size: .8125rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}
.related-meta i {
    color: var(--accent);
    font-size: .8125rem;
}

.cta-section {
    background:
        linear-gradient(rgba(13,18,16,.85), rgba(13,18,16,.85)),
        url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    padding: 88px 0;
    text-align: center;
    color: var(--text-light);
}
.cta-section h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}
.cta-section p {
    color: rgba(240,237,230,.7);
    max-width: 560px;
    margin: 0 auto 32px;
    font-size: .95rem;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.site-footer {
    background: var(--primary);
    border-top: 2px solid var(--accent);
    padding: 72px 0 0;
    color: #9AA19E;
}
.footer-brand {
    margin-bottom: 18px;
}
.footer-brand .navbar-brand {
    padding: 0;
}
.footer-desc {
    font-size: .9rem;
    color: #9AA19E;
    line-height: 1.8;
    max-width: 340px;
}
.footer-col h4 {
    color: var(--accent);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
}
.footer-col ul li {
    margin-bottom: 12px;
}
.footer-col ul li a {
    color: #9AA19E;
    font-size: .9rem;
    transition: color .3s;
}
.footer-col ul li a:hover {
    color: var(--accent);
}
.footer-bottom {
    margin-top: 48px;
    border-top: 1px solid rgba(255,255,255,.06);
    padding: 20px 0;
    font-size: .875rem;
    color: #7C8480;
}
.footer-bottom a { color: #9AA19E; }
.footer-bottom a:hover { color: var(--accent); }

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease-out, transform .6s ease-out;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 991.98px) {
    .navbar-collapse.show {
        position: absolute;
        top: 100%;
        left: 24px;
        right: 24px;
        background: rgba(13,18,16,.98);
        border-radius: var(--radius-lg);
        padding: 24px;
        box-shadow: 0 12px 40px rgba(0,0,0,.35);
        border: 1px solid rgba(201,169,106,.15);
    }
    .navbar-nav {
        gap: 4px;
    }
    .navbar-nav .nav-link {
        padding: 10px 12px;
    }
    .nav-right {
        flex-direction: column;
        gap: 14px;
        margin-top: 14px;
        padding-top: 16px;
        border-top: 1px solid rgba(201,169,106,.12);
    }
    .nav-right .btn {
        width: 100%;
        text-align: center;
    }
    .countdown {
        justify-content: center;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-content {
        padding: 44px 40px;
    }
}

@media (max-width: 767.98px) {
    .article-hero {
        padding: 120px 0 48px;
    }
    .article-hero h1 {
        font-size: 1.55rem;
        line-height: 1.35;
    }
    .article-meta {
        gap: 10px;
    }
    .meta-item {
        font-size: .8125rem;
    }
    .article-intro {
        font-size: .9rem;
    }
    .article-body-section {
        padding: 48px 0 44px;
    }
    .article-content {
        padding: 28px 20px;
        border-radius: 12px;
    }
    .article-bottom {
        flex-direction: column;
        align-items: flex-start;
        padding: 18px 0;
    }
    .related-section {
        padding: 64px 0;
    }
    .related-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .cta-section {
        padding: 64px 0;
    }
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .cta-buttons .btn {
        width: 200px;
    }
    .countdown .cd-label,
    .countdown .cd-live {
        display: none;
    }
    .site-footer {
        padding-top: 56px;
    }
    .footer-bottom {
        margin-top: 32px;
    }
    .brand-text {
        font-size: 1.2rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .countdown .cd-live .dot {
        animation: none;
    }
}

/* roulang page: category2 */
:root {
      --dark: #0D1210;
      --dark-rgb: 13, 18, 16;
      --gold: #C9A96A;
      --gold-light: #DDBD7A;
      --gold-dark: #A8894E;
      --cream: #F5F2EC;
      --text-dark: #1E2420;
      --text-light: #F0EDE6;
      --muted: #8A8F8C;
      --accent: #E4572E;
      --success: #2C7A5B;
      --border-light: #E3DED4;
      --border-gold: rgba(201, 169, 106, 0.12);
      --radius: 16px;
      --radius-sm: 8px;
      --radius-xs: 4px;
      --shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
      --tr: 0.3s ease;
    }

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

    body {
      font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      background: var(--cream);
      color: var(--text-dark);
      line-height: 1.7;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.3s ease;
    }

    .container {
      max-width: 1200px;
    }

    /* ======= Header & Nav ======= */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1030;
      background: transparent;
      transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
      border-bottom: 1px solid transparent;
    }

    .site-header.scrolled {
      background: rgba(13, 18, 16, 0.96);
      border-bottom-color: var(--gold);
      box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18);
    }

    .navbar {
      min-height: 72px;
      padding-top: 0;
      padding-bottom: 0;
    }

    .navbar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .brand-mark {
      width: 32px;
      height: 32px;
      border: 2px solid var(--gold);
      border-radius: 50%;
      position: relative;
      flex-shrink: 0;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 6px;
      border: 1px solid var(--gold);
      border-radius: 50% 50% 60% 60%;
      opacity: 0.6;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      left: 7px;
      right: 7px;
      top: 50%;
      height: 1px;
      background: var(--gold);
      opacity: 0.5;
    }

    .brand-text {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-light);
      letter-spacing: -0.02em;
      line-height: 1;
    }

    .navbar .nav-link {
      color: rgba(240, 237, 230, 0.85);
      font-weight: 500;
      padding: 24px 16px;
      border-bottom: 2px solid transparent;
      transition: color 0.3s ease, border-color 0.3s ease;
    }

    .navbar .nav-link:hover,
    .navbar .nav-link.active {
      color: var(--gold);
      border-bottom-color: var(--gold);
    }

    .nav-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .countdown {
      display: flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(201, 169, 106, 0.3);
      border-radius: 40px;
      padding: 5px 14px;
    }

    .cd-label {
      font-size: 0.75rem;
      color: rgba(240, 237, 230, 0.65);
      letter-spacing: 0.06em;
    }

    .cd-time {
      font-family: Georgia, "Times New Roman", serif;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: 0.04em;
    }

    .cd-live {
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 0.75rem;
      color: var(--success);
      font-weight: 500;
    }

    .cd-live .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--success);
      animation: pulse 1.2s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.45; transform: scale(0.82); }
    }

    .btn {
      border-radius: var(--radius-xs);
      font-weight: 600;
      transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    }

    .btn-primary {
      background: var(--gold);
      border-color: var(--gold);
      color: var(--dark);
      padding: 10px 26px;
    }

    .btn-primary:hover {
      background: var(--gold-light);
      border-color: var(--gold-light);
      color: var(--dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(201, 169, 106, 0.24);
    }

    .btn-primary:active {
      background: var(--gold-dark) !important;
      border-color: var(--gold-dark) !important;
      transform: translateY(0);
    }

    .btn-outline-gold {
      background: transparent;
      border: 1px solid var(--gold);
      color: var(--gold);
      padding: 10px 26px;
    }

    .btn-outline-gold:hover {
      background: rgba(201, 169, 106, 0.1);
      color: var(--gold-light);
      border-color: var(--gold-light);
      transform: translateY(-2px);
    }

    .btn-outline-gold:active {
      background: rgba(201, 169, 106, 0.18);
    }

    .navbar-toggler {
      border-color: rgba(201, 169, 106, 0.6);
      border-radius: 6px;
      padding: 4px 8px;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(201, 169, 106, 0.18);
    }

    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23C9A96A' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* ======= Page Hero ======= */
    .page-hero {
      position: relative;
      min-height: 48vh;
      display: flex;
      align-items: center;
      background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
      padding: 160px 0 72px;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(13, 18, 16, 0.88) 0%, rgba(13, 18, 16, 0.62) 60%, rgba(13, 18, 16, 0.28) 100%);
    }

    .page-hero .container {
      position: relative;
      z-index: 1;
    }

    .hero-breadcrumb {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.85rem;
      color: rgba(240, 237, 230, 0.6);
      margin-bottom: 12px;
    }

    .hero-breadcrumb a {
      color: rgba(240, 237, 230, 0.7);
    }

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

    .hero-breadcrumb .sep {
      color: var(--gold);
    }

    .page-hero h1 {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 700;
      color: var(--text-light);
      letter-spacing: -0.02em;
      line-height: 1.2;
      margin: 12px 0 12px;
    }

    .page-hero .lead-text {
      color: rgba(240, 237, 230, 0.78);
      font-size: 1.05rem;
      max-width: 640px;
      margin: 0;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid var(--gold);
      border-radius: var(--radius-xs);
      color: var(--gold);
      font-size: 0.78rem;
      padding: 4px 12px;
      margin-top: 20px;
      letter-spacing: 0.04em;
    }

    .hero-badge::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--success);
    }

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

    .section-title {
      font-size: clamp(1.5rem, 3vw, 2.25rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.25;
      margin: 0 0 16px;
      position: relative;
    }

    .section-title::after {
      content: "";
      display: block;
      width: 48px;
      height: 3px;
      background: var(--gold);
      margin-top: 14px;
    }

    .section-intro {
      color: var(--muted);
      font-size: 1rem;
      max-width: 640px;
      margin-bottom: 48px;
    }

    .dark-section {
      background: var(--dark);
      color: var(--text-light);
    }

    .dark-section .section-title {
      color: var(--text-light);
    }

    .dark-section .section-intro {
      color: rgba(240, 237, 230, 0.62);
    }

    .light-section {
      background: var(--cream);
    }

    .white-section {
      background: #fff;
    }

    /* ======= Problem List ======= */
    .problem-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .problem-item {
      display: flex;
      gap: 28px;
      padding: 30px 0;
      border-bottom: 1px solid var(--border-light);
      transition: background 0.3s ease, padding-left 0.3s ease;
    }

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

    .problem-item:hover {
      background: rgba(201, 169, 106, 0.05);
      padding-left: 12px;
    }

    .problem-num {
      font-family: Georgia, "Times New Roman", serif;
      font-size: 2.2rem;
      line-height: 1;
      color: var(--gold);
      min-width: 68px;
      font-weight: 700;
    }

    .problem-content h3 {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-dark);
    }

    .problem-content p {
      color: var(--muted);
      margin: 0;
      max-width: 780px;
    }

    /* ======= Steps ======= */
    .steps-section .step-card {
      text-align: center;
      padding: 36px 20px 20px;
      position: relative;
    }

    .step-num {
      width: 52px;
      height: 52px;
      border: 2px solid var(--gold);
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-family: Georgia, "Times New Roman", serif;
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--gold);
      background: rgba(201, 169, 106, 0.06);
      margin-bottom: 18px;
    }

    .step-card h3 {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .step-card p {
      color: rgba(240, 237, 230, 0.58);
      font-size: 0.9rem;
      margin: 0;
      line-height: 1.6;
    }

    .step-arrow {
      position: absolute;
      top: 50%;
      right: -18px;
      color: var(--gold);
      font-size: 1.4rem;
      transform: translateY(-50%);
      z-index: 2;
      line-height: 1;
    }

    @media (max-width: 991px) {
      .step-arrow {
        display: none;
      }
    }

    /* ======= Solution Cards ======= */
    .solution-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 32px;
      box-shadow: var(--shadow);
      height: 100%;
      border-top: 2px solid transparent;
      transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
    }

    .solution-card:hover {
      box-shadow: var(--shadow-lg);
      border-top-color: var(--gold);
      transform: translateY(-4px);
    }

    .solution-card.featured {
      background: var(--dark);
      color: var(--text-light);
      border-top-color: var(--gold);
    }

    .solution-card.featured:hover {
      box-shadow: 0 10px 36px rgba(0, 0, 0, 0.28);
    }

    .icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 22px;
      background: rgba(201, 169, 106, 0.06);
      color: var(--gold);
    }

    .featured .icon-wrap {
      background: rgba(201, 169, 106, 0.1);
    }

    .solution-card h3 {
      font-size: 1.2rem;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .solution-card p {
      color: var(--muted);
      font-size: 0.95rem;
      margin: 0;
      line-height: 1.7;
    }

    .featured p {
      color: rgba(240, 237, 230, 0.68);
    }

    .featured .solution-tag {
      display: inline-block;
      font-size: 0.75rem;
      border: 1px solid var(--gold);
      color: var(--gold);
      border-radius: 3px;
      padding: 2px 10px;
      margin-bottom: 8px;
    }

    /* ======= Device Section ======= */
    .device-media img {
      border-radius: var(--radius);
      border: 1px solid rgba(201, 169, 106, 0.28);
      box-shadow: var(--shadow);
      width: 100%;
      object-fit: cover;
    }

    .device-content .lead-text {
      color: var(--muted);
      font-size: 1rem;
      margin-bottom: 24px;
    }

    .device-points {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .device-points li {
      padding-left: 22px;
      position: relative;
      margin-bottom: 14px;
      color: var(--text-dark);
      font-weight: 500;
    }

    .device-points li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      width: 8px;
      height: 8px;
      background: var(--gold);
      border-radius: 50%;
    }

    .device-points li small {
      display: block;
      color: var(--muted);
      font-weight: 400;
      font-size: 0.88rem;
      line-height: 1.6;
      margin-top: 2px;
    }

    /* ======= FAQ ======= */
    .faq-sidebar .section-title {
      margin-bottom: 12px;
    }

    .faq-sidebar p {
      color: var(--muted);
      margin-bottom: 24px;
    }

    .faq-link {
      color: var(--gold);
      font-weight: 600;
      border-bottom: 1px solid var(--gold);
      padding-bottom: 2px;
    }

    .faq-link:hover {
      color: var(--gold-dark);
      border-bottom-color: var(--gold-dark);
    }

    .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid var(--border-light);
    }

    .accordion-button {
      background: transparent;
      padding: 24px 40px 24px 0;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-dark);
      box-shadow: none !important;
      position: relative;
      border: none;
      border-radius: 0 !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--gold);
      background: transparent;
    }

    .accordion-button:hover {
      color: var(--gold);
    }

    .accordion-button::after {
      display: none;
    }

    .accordion-button::before {
      content: "+";
      position: absolute;
      right: 0;
      top: 50%;
      transform: translateY(-50%);
      font-size: 1.5rem;
      font-weight: 400;
      color: var(--gold);
      transition: transform 0.3s ease;
      line-height: 1;
    }

    .accordion-button:not(.collapsed)::before {
      transform: translateY(-50%) rotate(45deg);
    }

    .accordion-body {
      padding: 0 40px 24px 0;
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* ======= CTA ======= */
    .cta-area {
      position: relative;
      background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
      padding: 96px 0;
      text-align: center;
    }

    .cta-area::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(13, 18, 16, 0.78);
    }

    .cta-area .container {
      position: relative;
      z-index: 1;
    }

    .cta-area h2 {
      color: var(--text-light);
      font-size: clamp(1.6rem, 3vw, 2.4rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 14px;
    }

    .cta-area p {
      color: rgba(240, 237, 230, 0.72);
      font-size: 1rem;
      max-width: 520px;
      margin: 0 auto 32px;
    }

    .cta-area .btn {
      margin: 0 8px;
    }

    .anchor {
      position: relative;
      top: -90px;
      visibility: hidden;
      display: block;
      width: 0;
      height: 0;
    }

    /* ======= Footer ======= */
    .site-footer {
      background: var(--dark);
      border-top: 2px solid var(--gold);
      padding: 64px 0 0;
      color: var(--muted);
    }

    .footer-brand .navbar-brand {
      padding: 0;
      margin-bottom: 16px;
    }

    .footer-desc {
      color: #9AA19E;
      line-height: 1.8;
      font-size: 0.92rem;
      max-width: 320px;
      margin: 0;
    }

    .footer-col h4 {
      color: var(--gold);
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

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

    .footer-col ul a {
      color: #9AA19E;
      font-size: 0.9rem;
      transition: color 0.3s ease, padding-left 0.3s ease;
    }

    .footer-col ul a:hover {
      color: var(--gold);
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 48px;
      padding: 20px 0;
      font-size: 0.85rem;
      color: #7A827F;
    }

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

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

    /* ======= Animations ======= */
    .animate-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    }

    .animate-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @media (prefers-reduced-motion: reduce) {
      .animate-up {
        transition: none;
        opacity: 1;
        transform: none;
      }
      .solution-card,
      .btn,
      .problem-item,
      .footer-col ul a {
        transition: none;
      }
    }

    /* ======= Responsive ======= */
    @media (max-width: 991px) {
      .navbar-collapse {
        background: rgba(13, 18, 16, 0.98);
        padding: 20px;
        border-radius: 12px;
        margin-top: 10px;
        border: 1px solid rgba(201, 169, 106, 0.18);
      }

      .navbar .nav-link {
        padding: 12px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      }

      .navbar .nav-link:hover,
      .navbar .nav-link.active {
        border-bottom-color: transparent;
        color: var(--gold);
      }

      .nav-right {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 0 4px;
        gap: 12px;
      }

      .countdown {
        width: 100%;
        justify-content: space-between;
      }

      .section {
        padding: 64px 0;
      }

      .page-hero {
        min-height: auto;
        padding: 140px 0 56px;
      }
    }

    @media (max-width: 767px) {
      .section {
        padding: 48px 0;
      }

      .page-hero {
        padding: 120px 0 40px;
      }

      .page-hero h1 {
        font-size: 1.8rem;
      }

      .page-hero .lead-text {
        font-size: 0.95rem;
      }

      .problem-item {
        flex-direction: column;
        gap: 10px;
        padding: 22px 0;
      }

      .problem-num {
        font-size: 1.6rem;
        min-width: auto;
      }

      .steps-section .step-card {
        padding: 24px 12px 12px;
      }

      .solution-card {
        padding: 24px;
      }

      .cta-area {
        padding: 64px 0;
      }

      .cta-area .btn {
        width: 100%;
        max-width: 280px;
        margin: 8px 0;
        display: inline-block;
      }

      .footer-bottom {
        text-align: center;
      }

      .brand-text {
        font-size: 1.15rem;
      }
    }

/* roulang page: category3 */
/* ===================== 设计变量 ===================== */
        :root {
            --color-dark: #0D1210;
            --color-dark-light: #151D1A;
            --color-gold: #C9A96A;
            --color-gold-light: #DDBD7A;
            --color-gold-dark: #A8894E;
            --color-bg-light: #F5F2EC;
            --color-text-dark: #1E2420;
            --color-text-light: #F0EDE6;
            --color-text-muted: #8A8F8C;
            --color-accent: #E4572E;
            --color-success: #2C7A5B;
            --color-border-light: #E3DED4;
            --color-border-dark: rgba(201, 169, 106, 0.12);
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-sm: 4px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.08);
            --font-title: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Arial, sans-serif;
            --font-num: Georgia, "Times New Roman", "DIN Alternate", serif;
            --space-section: 96px;
            --space-section-sm: 64px;
            --space-section-xs: 48px;
            --container-w: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text-dark);
            background: var(--color-bg-light);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

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

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-w);
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            position: relative;
        }

        /* ===================== 按钮 ===================== */
        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            padding: 14px 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .btn-primary {
            background: var(--color-gold);
            color: var(--color-dark) !important;
            border-radius: 6px;
        }

        .btn-primary:hover {
            background: var(--color-gold-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 169, 106, 0.35);
        }

        .btn-primary:active {
            background: var(--color-gold-dark);
            transform: translateY(0);
        }

        .btn-outline-gold {
            background: transparent;
            border: 1px solid var(--color-gold);
            color: var(--color-gold) !important;
            border-radius: 6px;
        }

        .btn-outline-gold:hover {
            background: rgba(201, 169, 106, 0.1);
            border-color: var(--color-gold-light);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: var(--color-text-light) !important;
            border-radius: 6px;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 1.0625rem;
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 0.875rem;
        }

        .btn .fa-arrow-right,
        .btn .fa-arrow-left {
            transition: transform 0.3s ease;
        }

        .btn:hover .fa-arrow-right {
            transform: translateX(8px);
        }

        .btn:hover .fa-arrow-left {
            transform: translateX(-4px);
        }

        /* ===================== 徽章 / 标签 ===================== */
        .badge-gold {
            display: inline-block;
            background: transparent;
            border: 1px solid var(--color-gold);
            color: var(--color-gold);
            border-radius: var(--radius-sm);
            padding: 4px 14px;
            font-size: 0.8125rem;
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        .badge-dark {
            display: inline-block;
            background: var(--color-dark);
            color: #fff;
            border-radius: 20px;
            padding: 3px 12px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        .badge-orange {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 5px 16px;
            font-size: 0.8125rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .tag {
            display: inline-block;
            border: 1px solid #D8D2C6;
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            transition: border-color 0.3s ease, color 0.3s ease;
        }

        .tag:hover {
            border-color: var(--color-gold);
            color: var(--color-gold);
        }

        /* ===================== 导航 ===================== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            height: 72px;
            background: transparent;
            transition: background 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            background: rgba(13, 18, 16, 0.96);
            border-bottom: 1px solid rgba(201, 169, 106, 0.5);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .site-header .navbar {
            height: 72px;
            padding: 0;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(201, 169, 106, 0.2), rgba(201, 169, 106, 0.05));
            border: 2px solid var(--color-gold);
            display: inline-block;
            position: relative;
            flex-shrink: 0;
        }

        .brand-mark::before {
            content: "";
            position: absolute;
            inset: 6px;
            border-radius: 6px;
            border: 1.5px solid var(--color-gold);
            opacity: 0.5;
        }

        .brand-mark::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            width: 12px;
            height: 2px;
            background: var(--color-gold);
            transform: translate(-50%, -50%);
            box-shadow: 0 4px 0 var(--color-gold), 0 -4px 0 var(--color-gold);
            opacity: 0.7;
        }

        .brand-text {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: 1.375rem;
            color: var(--color-text-light);
            letter-spacing: 0.02em;
            line-height: 1;
            white-space: nowrap;
        }

        .navbar-nav {
            gap: 6px;
        }

        .navbar-nav .nav-item {
            position: relative;
        }

        .navbar-nav .nav-link {
            font-family: var(--font-title);
            font-weight: 500;
            font-size: 0.9375rem;
            color: rgba(240, 237, 230, 0.85) !important;
            padding: 10px 16px !important;
            border-radius: var(--radius-sm);
            transition: color 0.3s ease, background 0.3s ease;
            position: relative;
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            background: var(--color-gold);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
            border-radius: 2px;
        }

        .navbar-nav .nav-link:hover {
            color: #fff !important;
        }

        .navbar-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .navbar-nav .nav-link.active {
            color: var(--color-gold) !important;
        }

        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .countdown {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 6px;
            padding: 6px 14px;
            font-family: var(--font-num);
        }

        .cd-label {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.6);
            font-family: var(--font-body);
            letter-spacing: 0.04em;
        }

        .cd-time {
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 700;
            letter-spacing: 0.05em;
        }

        .cd-live {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--color-gold);
            font-family: var(--font-body);
        }

        .cd-live .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-success);
            animation: pulse-dot 1.6s ease infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3) !important;
            border-radius: 6px;
            padding: 8px 10px;
            background: transparent;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E") !important;
        }

        /* ===================== 页面横幅 Hero ===================== */
        .page-hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            background: var(--color-dark) url('/assets/images/coverpic/cover-4.webp') center/cover no-repeat;
            padding: 72px 0 96px;
            isolation: isolate;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(13, 18, 16, 0.95) 40%, rgba(13, 18, 16, 0.6) 75%, rgba(13, 18, 16, 0.45) 100%);
            z-index: -1;
        }

        .page-hero .hero-inner {
            padding: 64px 0 24px;
        }

        .page-hero .badge-gold {
            margin-bottom: 24px;
            display: inline-block;
        }

        .page-hero h1 {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            line-height: 1.2;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .page-hero h1 .gold-text {
            color: var(--color-gold);
        }

        .page-hero .lead {
            font-size: clamp(1rem, 1.6vw, 1.25rem);
            color: rgba(240, 237, 230, 0.85);
            max-width: 620px;
            line-height: 1.7;
        }

        .page-hero .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 36px;
        }

        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9063rem;
        }

        .hero-trust-item i {
            color: var(--color-gold);
            font-size: 1rem;
        }

        /* ===================== 安全防线 ===================== */
        .security-overview {
            padding: var(--space-section) 0;
            background: var(--color-bg-light);
        }

        .section-label {
            font-size: 0.875rem;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--color-gold);
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: clamp(1.5rem, 3vw, 2.25rem);
            color: var(--color-text-dark);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .section-title::after {
            content: "";
            display: block;
            width: 48px;
            height: 3px;
            background: var(--color-gold);
            border-radius: 3px;
            margin-top: 14px;
        }

        .section-desc {
            color: var(--color-text-muted);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 720px;
        }

        .security-points {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .security-point {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid transparent;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .security-point:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(201, 169, 106, 0.4);
        }

        .security-point .sp-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(201, 169, 106, 0.1);
            border: 1px solid rgba(201, 169, 106, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: var(--color-gold);
            font-size: 1.375rem;
        }

        .security-point h3 {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 8px;
            font-family: var(--font-title);
        }

        .security-point p {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ===================== 问答区 ===================== */
        .qa-section {
            background: var(--color-dark);
            padding: var(--space-section) 0;
            position: relative;
            overflow: hidden;
        }

        .qa-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }

        .qa-section .section-title {
            color: var(--color-text-light);
        }

        .qa-section .section-title::after {
            background: var(--color-gold);
        }

        .qa-section .section-desc {
            color: rgba(240, 237, 230, 0.65);
        }

        .qa-list {
            margin-top: 48px;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .qa-item {
            padding: 32px 0;
            border-bottom: 1px solid rgba(201, 169, 106, 0.12);
            display: grid;
            grid-template-columns: 48px 1fr;
            gap: 24px;
            transition: background 0.3s ease, padding-left 0.3s ease;
            border-radius: 12px;
        }

        .qa-item:hover {
            background: rgba(201, 169, 106, 0.05);
            padding-left: 12px;
        }

        .qa-item:first-child {
            border-top: 1px solid rgba(201, 169, 106, 0.12);
        }

        .qa-q-mark {
            font-family: var(--font-num);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-gold);
            line-height: 1.2;
        }

        .qa-q {
            font-family: var(--font-title);
            font-weight: 600;
            font-size: 1.125rem;
            color: var(--color-text-light);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .qa-a {
            font-size: 0.9688rem;
            color: rgba(240, 237, 230, 0.75);
            line-height: 1.8;
            max-width: 920px;
        }

        /* ===================== 安全贴士 ===================== */
        .tips-section {
            padding: var(--space-section) 0;
            background: var(--color-bg-light);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
            margin-top: 48px;
        }

        .tips-content .tips-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .tips-list li {
            padding: 18px 0 18px 32px;
            border-left: 2px solid var(--color-gold);
            margin-bottom: 12px;
            background: #fff;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .tips-list li:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-card-hover);
        }

        .tips-list li strong {
            display: block;
            font-size: 1.0625rem;
            color: var(--color-text-dark);
            margin-bottom: 4px;
            font-family: var(--font-title);
        }

        .tips-list li p {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .tips-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
            position: relative;
        }

        .tips-visual img {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .tips-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(13, 18, 16, 0.55));
            pointer-events: none;
        }

        /* ===================== CTA 横幅 ===================== */
        .cta-banner {
            background: var(--color-dark) url('/assets/images/backpic/back-3.png') center/cover fixed no-repeat;
            padding: 96px 0;
            text-align: center;
            position: relative;
            isolation: isolate;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(13, 18, 16, 0.82);
            z-index: -1;
        }

        .cta-banner h2 {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: clamp(1.75rem, 3.5vw, 2.875rem);
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .cta-banner h2 .gold-text {
            color: var(--color-gold);
        }

        .cta-banner p {
            font-size: 1.0625rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }

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

        /* ===================== 页脚 ===================== */
        .site-footer {
            background: var(--color-dark);
            border-top: 2px solid var(--color-gold);
            padding: 64px 0 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .footer-brand {
            margin-bottom: 16px;
        }

        .site-footer .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }

        .site-footer .brand-mark {
            background: rgba(201, 169, 106, 0.1);
        }

        .site-footer .brand-text {
            color: var(--color-text-light);
            font-size: 1.25rem;
        }

        .footer-desc {
            font-size: 0.9063rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            margin-top: 12px;
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--color-gold);
            margin-bottom: 20px;
            letter-spacing: 0.05em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 0.9063rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-col ul li a:hover {
            color: var(--color-gold);
            padding-left: 6px;
        }

        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

        /* ===================== 滚动入场动画 ===================== */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease-out, transform 0.7s ease-out;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }

        /* ===================== 响应式 ===================== */
        @media (max-width: 991.98px) {
            :root {
                --space-section: 72px;
            }

            .site-header {
                background: rgba(13, 18, 16, 0.96);
            }

            .site-header .navbar-collapse {
                background: rgba(13, 18, 16, 0.98);
                border-radius: 16px;
                padding: 20px;
                margin-top: 8px;
                border: 1px solid rgba(201, 169, 106, 0.2);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            }

            .navbar-nav {
                margin: 12px 0 !important;
                gap: 4px;
            }

            .navbar-nav .nav-link {
                color: rgba(255, 255, 255, 0.85) !important;
                padding: 12px 14px !important;
            }

            .navbar-nav .nav-link::after {
                left: 14px;
                right: auto;
                width: 24px;
                transform: scaleX(0);
            }

            .navbar-nav .nav-link.active::after {
                transform: scaleX(1);
            }

            .nav-right {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }

            .countdown {
                justify-content: center;
            }

            .nav-right .btn {
                width: 100%;
            }

            .page-hero {
                min-height: 500px;
                padding-top: 96px;
            }

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

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

            .tips-visual {
                min-height: 280px;
            }

            .security-overview {
                padding-top: 72px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --space-section: 48px;
                --space-section-sm: 40px;
            }

            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .page-hero {
                min-height: auto;
                padding: 120px 0 64px;
            }

            .page-hero h1 {
                font-size: clamp(1.75rem, 6vw, 2.375rem);
            }

            .page-hero .lead {
                font-size: 0.9688rem;
            }

            .hero-trust-item {
                font-size: 0.8125rem;
            }

            .security-points {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .security-point {
                padding: 24px 16px;
            }

            .security-point .sp-icon {
                width: 46px;
                height: 46px;
                font-size: 1.125rem;
                margin-bottom: 12px;
            }

            .security-point h3 {
                font-size: 0.9688rem;
            }

            .security-point p {
                font-size: 0.8125rem;
            }

            .qa-item {
                grid-template-columns: 36px 1fr;
                gap: 14px;
                padding: 24px 0;
            }

            .qa-q-mark {
                font-size: 1.375rem;
            }

            .qa-q {
                font-size: 1rem;
            }

            .qa-a {
                font-size: 0.9063rem;
                line-height: 1.75;
            }

            .tips-list li {
                padding: 16px 12px 16px 24px;
            }

            .cta-banner {
                padding: 64px 0;
            }

            .cta-banner .btn-group {
                flex-direction: column;
                align-items: center;
            }

            .cta-banner .btn {
                width: 100%;
                max-width: 320px;
            }

            .site-footer {
                padding-top: 48px;
            }

            .footer-col {
                margin-bottom: 8px;
            }

            .footer-bottom {
                margin-top: 32px;
            }
        }

        @media (max-width: 520px) {
            .security-points {
                grid-template-columns: 1fr;
            }

            .security-point {
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
                padding: 20px;
            }

            .security-point .sp-icon {
                margin: 0;
                flex-shrink: 0;
            }

            .security-point h3 {
                margin-bottom: 2px;
            }

            .brand-text {
                font-size: 1.1875rem;
            }

            .countdown .cd-label {
                display: none;
            }

            .countdown .cd-live {
                display: none;
            }

            .qa-list {
                margin-top: 32px;
            }
        }