/* roulang page: index */
:root {
  --primary: #1B2A4A;
  --primary-light: #2A3D66;
  --accent: #F0B35A;
  --accent-hover: #F7C579;
  --accent-dark: #B07E2A;
  --cyan: #3CCFBE;
  --light-bg: #F8F6F1;
  --dark-bg: #101623;
  --text-main: #23283A;
  --text-secondary: #5B6478;
  --text-muted: #8A93A6;
  --border-color: #E4E1D8;
  --radius-btn: 8px;
  --radius-card: 16px;
  --radius-input: 6px;
  --radius-tag: 999px;
  --shadow-sm: 0 2px 8px rgba(16,22,35,0.06);
  --shadow-lg: 0 12px 32px rgba(16,22,35,0.12);
  --section-gap: 80px;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  background: #fff;
  color: var(--text-main);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
button { border: none; background: none; cursor: pointer; }
input, textarea { font-family: var(--font-family); }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
section { position: relative; }
.section-padding { padding: var(--section-gap) 0; }
.section-title {
  font-size: 28px;
  line-height: 36px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  position: relative;
}
.section-subtitle {
  font-size: 15px;
  line-height: 24px;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 40px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all 0.2s ease;
  padding: 10px 22px;
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
}
.btn:focus { outline: 2px solid rgba(240,179,90,0.5); outline-offset: 2px; }
.btn-accent {
  background: var(--accent);
  color: var(--primary);
  font-weight: 700;
}
.btn-accent:hover { background: var(--accent-hover); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 16px rgba(240,179,90,0.3); }
.btn-accent:active { transform: translateY(0); box-shadow: none; }
.btn-outline-dark {
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline-dark:hover { background: var(--primary); color: #fff; }
.btn-outline-light {
  border: 1px solid rgba(255,255,255,0.6);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover { background: #fff; color: var(--dark-bg); }
.btn-lg { padding: 14px 32px; font-size: 17px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(16,22,35,0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  height: 64px;
}
.site-header .container { height: 100%; }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.brand-icon {
  width: 24px;
  height: 24px;
  fill: var(--accent);
  flex-shrink: 0;
}
.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: #C9CDD8;
  border-radius: 6px;
  position: relative;
  transition: color 0.2s ease;
}
.nav-link:hover { color: #fff; }
.nav-link.active {
  color: #fff;
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.search-box {
  position: relative;
  width: 200px;
}
.search-box input {
  width: 100%;
  height: 34px;
  border-radius: 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid transparent;
  padding: 0 38px 0 14px;
  font-size: 13px;
  color: #fff;
  outline: none;
  transition: border-color 0.2s ease;
}
.search-box input::placeholder { color: rgba(255,255,255,0.45); }
.search-box input:focus { border-color: var(--accent); }
.search-box i {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  pointer-events: none;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
}
.hamburger-line {
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
@media (max-width: 991.98px) {
  .site-header { height: 56px; }
  .hamburger { display: flex; }
  .nav-links, .nav-actions { flex-direction: column; align-items: stretch; gap: 8px; width: 100%; }
  .nav-link { padding: 14px 16px; font-size: 17px; color: #fff; }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: rgba(240,179,90,0.12); color: var(--accent); border-radius: 8px; }
  .navbar-collapse {
    position: absolute;
    top: 56px;
    left: 0; right: 0;
    background: var(--dark-bg);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 16px 24px 20px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  }
  .search-box { width: 100%; margin-bottom: 8px; }
  .search-box input { height: 40px; }
  .btn-outline-light, .btn-accent { width: 100%; }
}

/* ===== Hero ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(16,22,35,0.88) 40%, rgba(16,22,35,0.55) 75%, rgba(16,22,35,0.45) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.4) 0, transparent 2px),
    radial-gradient(1px 1px at 70% 20%, rgba(255,255,255,0.3) 0, transparent 2px),
    radial-gradient(1.5px 1.5px at 40% 60%, rgba(240,179,90,0.2) 0, transparent 2.5px),
    radial-gradient(1px 1px at 85% 65%, rgba(255,255,255,0.25) 0, transparent 2px),
    radial-gradient(1px 1px at 10% 80%, rgba(60,207,190,0.15) 0, transparent 2px);
  pointer-events: none;
  animation: starTwinkle 6s ease-in-out infinite alternate;
}
@keyframes starTwinkle {
  0% { opacity: 0.4; }
  100% { opacity: 0.8; }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(240,179,90,0.12);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 20px;
  border: 1px solid rgba(240,179,90,0.2);
}
.hero-tag i { font-size: 12px; }
.hero h1 {
  font-size: 44px;
  line-height: 52px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.hero-subtitle {
  font-size: 18px;
  line-height: 28px;
  color: #D5D9E2;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #C9CDD8;
  padding-right: 8px;
}
.trust-item i {
  color: var(--accent);
  font-size: 14px;
}
@media (max-width: 767.98px) {
  .hero { min-height: auto; padding: 110px 0 60px; text-align: center; }
  .hero-content { margin: 0 auto; }
  .hero h1 { font-size: 30px; line-height: 38px; }
  .hero-subtitle { font-size: 16px; line-height: 24px; margin-bottom: 24px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn { width: 100%; }
  .hero-trust { justify-content: center; }
}

/* ===== Stats ===== */
.stats-section {
  background: var(--light-bg);
  padding: 60px 0;
  border-bottom: 1px solid var(--border-color);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 16px;
}
.stat-number {
  font-size: 40px;
  line-height: 48px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}
@media (max-width: 991.98px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 576px) {
  .stats-grid { grid-template-columns: 1fr; gap: 16px; }
}

/* ===== Section Common ===== */
.section-head {
  margin-bottom: 44px;
}
.section-head.center { text-align: center; }
.section-head.center .section-subtitle { margin-left: auto; margin-right: auto; }
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
  text-transform: none;
  letter-spacing: 0.3px;
  margin-bottom: 8px;
}

/* ===== Timeline ===== */
.timeline-section {
  background: #fff;
}
.timeline-wrap {
  position: relative;
  padding: 20px 0;
}
.timeline-line {
  position: absolute;
  top: 44px;
  left: 40px;
  right: 40px;
  height: 1px;
  border-top: 1px dashed #CBD5E1;
  pointer-events: none;
}
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}
.timeline-item {
  text-align: center;
  padding: 0 8px;
}
.timeline-node {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 0 0 6px rgba(240,179,90,0.15);
}
.timeline-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}
.timeline-item p {
  font-size: 13px;
  line-height: 20px;
  color: var(--text-secondary);
}
@media (max-width: 991.98px) {
  .timeline-line { display: none; }
  .timeline-grid {
    grid-template-columns: 1fr;
    gap: 0;
    margin-left: 24px;
    padding-left: 24px;
    border-left: 2px solid var(--border-color);
  }
  .timeline-item {
    text-align: left;
    padding: 0 0 32px;
    position: relative;
  }
  .timeline-item::before {
    content: "";
    position: absolute;
    left: -33px;
    top: 8px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid #fff;
    box-shadow: 0 0 0 3px rgba(240,179,90,0.3);
  }
  .timeline-node {
    width: 32px;
    height: 32px;
    font-size: 14px;
    margin: 0 0 8px;
    box-shadow: 0 0 0 4px rgba(240,179,90,0.15);
  }
}

/* ===== Highlights ===== */
.highlights-section {
  background: var(--light-bg);
}
.hl-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  height: 100%;
  position: relative;
  transition: all 0.2s ease;
}
.hl-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.hl-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(240,179,90,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--accent-dark);
  margin-bottom: 20px;
}
.hl-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(240,179,90,0.12);
  padding: 4px 10px;
  border-radius: var(--radius-tag);
}
.hl-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}
.hl-card p {
  font-size: 14px;
  line-height: 22px;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ===== Compare ===== */
.compare-section {
  background: #fff;
}
.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.compare-col {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  position: relative;
  transition: all 0.2s ease;
}
.compare-col:hover { box-shadow: var(--shadow-lg); }
.compare-col.highlight {
  border: 2px solid var(--accent);
  box-shadow: var(--shadow-lg);
}
.compare-recommend {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  white-space: nowrap;
}
.compare-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  text-align: center;
  margin-bottom: 6px;
}
.compare-desc {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 24px;
  line-height: 20px;
}
.compare-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.compare-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid #f0eee9;
  font-size: 14px;
  line-height: 20px;
  color: var(--text-main);
}
.compare-features li:last-child { border-bottom: none; }
.compare-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.compare-dot.yes { background: var(--cyan); }
.compare-dot.no { background: #ccc; width: 10px; height: 10px; border-radius: 2px; font-size: 0; position: relative; }
.compare-dot.no::after {
  content: "×";
  position: absolute;
  top: -5px;
  left: 0;
  font-size: 14px;
  color: #B0B7C3;
  line-height: 1;
}
.compare-price {
  text-align: center;
  padding: 16px 0 0;
  border-top: 1px solid #f0eee9;
}
.compare-price .amount {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}
.compare-price .unit { font-size: 13px; color: var(--text-secondary); }
@media (max-width: 768px) {
  .compare-grid { grid-template-columns: 1fr; gap: 20px; }
  .compare-col { max-width: 420px; margin: 0 auto; width: 100%; }
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--light-bg);
}
.faq-accordion {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.faq-item.active { border-color: var(--accent); }
.faq-question {
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  background: transparent;
}
.faq-question .faq-icon {
  font-size: 20px;
  color: var(--accent-dark);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 22px;
  color: var(--text-secondary);
}

/* ===== CTA Form ===== */
.cta-section {
  background: var(--dark-bg);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 30% 20%, rgba(255,255,255,0.3) 0, transparent 2px),
    radial-gradient(1.5px 1.5px at 70% 50%, rgba(240,179,90,0.15) 0, transparent 2.5px),
    radial-gradient(1px 1px at 50% 80%, rgba(255,255,255,0.2) 0, transparent 2px);
  opacity: 0.4;
  pointer-events: none;
}
.cta-content {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 48px;
  align-items: center;
  flex-wrap: wrap;
}
.cta-left {
  flex: 1 1 360px;
}
.cta-left h2 {
  font-size: 28px;
  line-height: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.cta-left p {
  font-size: 15px;
  line-height: 24px;
  color: #C9CDD8;
  margin-bottom: 0;
  max-width: 440px;
}
.cta-form {
  flex: 1 1 380px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-card);
  padding: 32px;
}
.cta-form .form-label {
  font-size: 13px;
  font-weight: 500;
  color: #D5D9E2;
  margin-bottom: 6px;
  display: block;
}
.cta-form .form-control {
  height: 44px;
  border-radius: var(--radius-input);
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.08);
  color: #fff;
  padding: 0 14px;
  font-size: 14px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.cta-form .form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(240,179,90,0.2);
}
.cta-form .form-control::placeholder { color: rgba(255,255,255,0.35); }
.cta-form .btn { margin-top: 16px; width: 100%; height: 46px; }

/* ===== Latest Posts ===== */
.latest-section {
  background: #fff;
}
.post-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.post-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--light-bg);
}
.post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.post-card:hover .post-cover img { transform: scale(1.05); }
.post-body {
  padding: 20px 20px 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-category {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-dark);
  background: rgba(240,179,90,0.12);
  padding: 2px 10px;
  border-radius: var(--radius-tag);
  margin-bottom: 10px;
  align-self: flex-start;
}
.post-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  line-height: 26px;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-body h3 a { color: inherit; }
.post-body h3 a:hover { color: var(--accent-dark); }
.post-body p {
  font-size: 14px;
  line-height: 22px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
  flex: 1;
}
.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid #f0eee9;
  font-size: 12px;
  color: var(--text-muted);
}
.post-meta a {
  color: var(--accent-dark);
  font-weight: 600;
}
.post-meta a:hover { color: var(--primary); }
.empty-state {
  text-align: center;
  padding: 60px 24px;
  background: var(--light-bg);
  border-radius: var(--radius-card);
}
.empty-state i {
  font-size: 32px;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: block;
}
.empty-state p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

/* ===== Footer ===== */
.footer {
  background: var(--dark-bg);
  padding: 64px 0 0;
  color: #C9CDD8;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.footer-brand .brand-icon { width: 20px; height: 20px; }
.footer-brand-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}
.footer-desc {
  font-size: 13px;
  line-height: 22px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
  max-width: 260px;
}
.footer-social {
  display: flex;
  gap: 8px;
}
.footer-social a {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #C9CDD8;
  transition: all 0.2s ease;
}
.footer-social a:hover {
  background: var(--accent);
  color: var(--primary);
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li { margin-bottom: 8px; }
.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s ease;
}
.footer-links a:hover { color: var(--accent); }
.footer-contact li {
  display: flex;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
}
.footer-contact li i {
  color: var(--accent);
  font-size: 14px;
  margin-top: 2px;
}
.footer-bottom {
  padding: 20px 0;
  text-align: center;
}
.footer-copyright {
  font-size: 12px;
  color: #6B7280;
}
@media (max-width: 991.98px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 576px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer { padding-top: 48px; }
}

/* ===== Utility ===== */
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.text-center { text-align: center; }
@media (max-width: 767.98px) {
  .section-padding { padding: 48px 0; }
  .section-title { font-size: 24px; line-height: 32px; }
  .cta-content { flex-direction: column; gap: 24px; }
  .cta-form { padding: 24px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1B2A4A;
            --primary-light: #2A3D66;
            --accent: #F0B35A;
            --accent-hover: #F7C579;
            --cyan: #3CCFBE;
            --bg-light: #F8F6F1;
            --bg-dark: #101623;
            --text-primary: #23283A;
            --text-secondary: #5B6478;
            --border: #E4E1D8;
            --radius-btn: 8px;
            --radius-card: 16px;
            --radius-input: 6px;
            --shadow-sm: 0 2px 8px rgba(16, 22, 35, 0.06);
            --shadow-lg: 0 12px 32px rgba(16, 22, 35, 0.12);
            --space-desktop: 80px;
            --space-mobile: 48px;
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ===== 基础 reset / base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 26px;
            color: var(--text-primary);
            background: #fff;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 公共按钮 ===== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all .2s ease;
            border: none;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary);
            padding: 10px 20px;
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(240, 179, 90, 0.3);
        }

        .btn-accent:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-dark-custom {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 10px 20px;
        }

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

        .btn-outline-light-custom {
            border: 1px solid #fff;
            color: #fff;
            background: transparent;
            padding: 10px 20px;
        }

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

        .btn-lg-custom {
            height: 48px;
            padding: 0 28px;
            font-size: 16px;
            line-height: 48px;
        }

        .btn-sm-custom {
            height: 34px;
            padding: 0 16px;
            font-size: 14px;
            line-height: 32px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(16, 22, 35, 0.9);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 18px;
            height: 18px;
            color: var(--accent);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .5px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 6px;
            cursor: pointer;
        }

        .hamburger-line {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
        }

        #siteNav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex: 1;
            gap: 20px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0;
            padding: 0;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: #C9CDD8;
            padding: 6px 0;
            position: relative;
            transition: color .2s;
            display: inline-block;
        }

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

        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            position: relative;
            width: 200px;
        }

        .search-box input {
            width: 100%;
            height: 34px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid transparent;
            padding: 0 34px 0 14px;
            color: #fff;
            font-size: 13px;
            outline: none;
            transition: border-color .2s;
        }

        .search-box input::placeholder {
            color: #8B93A7;
        }

        .search-box input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.1);
        }

        .search-box i {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 13px;
            color: #8B93A7;
            pointer-events: none;
        }

        /* ===== Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, rgba(16, 22, 35, 0.92), rgba(27, 42, 74, 0.82)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            padding: 140px 0 80px;
            margin-top: 64px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 30px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(240, 179, 90, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(60, 207, 190, 0.1), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            max-width: 800px;
            position: relative;
            z-index: 2;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 179, 90, 0.15);
            color: var(--accent);
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
            font-weight: 500;
        }

        .category-hero h1 {
            font-size: 44px;
            line-height: 54px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-hero .hero-sub {
            font-size: 17px;
            line-height: 28px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 640px;
        }

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

        .hero-badges {
            display: flex;
            gap: 28px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .hero-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 13px;
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 15px;
        }

        /* ===== 安全简介区 ===== */
        .sec-intro {
            padding: 50px 0 10px;
            background: #fff;
        }

        .sec-intro .intro-text {
            max-width: 900px;
            font-size: 16px;
            line-height: 28px;
            color: var(--text-secondary);
        }

        .sec-intro .intro-text strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* ===== 安全数据条 ===== */
        .sec-stats {
            padding: 40px 0;
            background: var(--bg-light);
        }

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

        .stat-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all .2s ease;
        }

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

        .stat-num {
            font-size: 36px;
            line-height: 46px;
            font-weight: 700;
            color: var(--cyan);
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== 安全卡片区 ===== */
        .sec-security-cards {
            padding: var(--space-desktop) 0;
            background: #fff;
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .sec-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 179, 90, 0.12);
            color: #B07E2A;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 28px;
            line-height: 36px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .security-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all .2s ease;
            position: relative;
        }

        .security-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(240, 179, 90, 0.4);
        }

        .security-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(240, 179, 90, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .security-card .card-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: rgba(240, 179, 90, 0.12);
            color: #B07E2A;
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }

        .security-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 28px;
        }

        .security-card p {
            font-size: 14px;
            line-height: 24px;
            color: var(--text-secondary);
        }

        /* ===== 安全流程 ===== */
        .sec-process {
            padding: var(--space-desktop) 0;
            background: var(--bg-light);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 14px;
            left: 8%;
            right: 8%;
            border-top: 1px dashed #C5C0B5;
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 0 0 4px rgba(240, 179, 90, 0.2);
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 22px;
            padding: 0 8px;
        }

        /* ===== 认证徽章区 ===== */
        .sec-badges {
            padding: var(--space-desktop) 0;
            background: #fff;
        }

        .badges-wrap {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .badge-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 22px;
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
            transition: all .2s ease;
        }

        .badge-item i {
            color: var(--accent);
            font-size: 16px;
        }

        .badge-item:hover {
            border-color: var(--accent);
            background: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        /* ===== 安全FAQ ===== */
        .sec-faq {
            padding: var(--space-desktop) 0;
            background: var(--bg-light);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .2s ease;
        }

        .faq-item.active {
            border-color: var(--accent);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            transition: color .2s;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            background: rgba(240, 179, 90, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #B07E2A;
            flex-shrink: 0;
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 24px;
            color: var(--text-secondary);
            padding-bottom: 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 0;
        }

        .faq-item.active .faq-icon .fa-plus {
            display: none;
        }

        .faq-item .faq-icon .fa-xmark {
            display: none;
        }

        .faq-item.active .faq-icon .fa-xmark {
            display: inline;
        }

        /* ===== CTA区 ===== */
        .sec-cta {
            background: linear-gradient(180deg, rgba(16, 22, 35, 0.92), rgba(16, 22, 35, 0.96)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: var(--space-desktop) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .sec-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 100%;
            background-image: radial-gradient(rgba(240, 179, 90, 0.08) 1px, transparent 1px);
            background-size: 28px 28px;
            pointer-events: none;
        }

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

        .sec-cta h2 {
            font-size: 32px;
            line-height: 42px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .sec-cta p {
            font-size: 15px;
            color: #C9CDD8;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 22px;
            color: #8B93A7;
            max-width: 320px;
            margin-bottom: 20px;
        }

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

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #C9CDD8;
            font-size: 15px;
            transition: all .2s;
        }

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

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: #8B93A7;
            transition: color .2s;
        }

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

        .footer-contact li {
            font-size: 14px;
            color: #8B93A7;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
        }

        .footer-copyright {
            font-size: 12px;
            color: #6B7280;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .hamburger {
                display: flex;
            }

            #siteNav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-dark);
                padding: 20px 24px 28px;
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                display: none;
            }

            #siteNav.show {
                display: flex;
            }

            .nav-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                width: 100%;
            }

            .nav-link {
                font-size: 18px;
                padding: 8px 0;
                display: block;
                width: 100%;
            }

            .nav-link.active::after {
                display: none;
            }

            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
            }

            .search-box {
                width: 100% !important;
            }

            .search-box input {
                width: 100%;
            }

            .nav-actions .btn {
                text-align: center;
            }

            .category-hero {
                padding-top: 120px;
            }

            .category-hero h1 {
                font-size: 34px;
                line-height: 44px;
            }

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

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

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

            .process-steps::before {
                display: none;
            }

            .process-step {
                margin-bottom: 24px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .site-header {
                height: 56px;
            }

            .header-inner {
                height: 56px;
            }

            #siteNav {
                top: 56px;
            }

            .category-hero {
                padding-top: 100px;
                padding-bottom: 56px;
            }

            .category-hero h1 {
                font-size: 28px;
                line-height: 36px;
            }

            .category-hero .hero-sub {
                font-size: 15px;
            }

            .hero-badges {
                gap: 16px;
            }

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

            .stat-card {
                padding: 20px 16px;
            }

            .stat-num {
                font-size: 28px;
                line-height: 36px;
            }

            .security-cards-grid {
                grid-template-columns: 1fr;
            }

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

            .badges-wrap {
                gap: 12px;
            }

            .badge-item {
                padding: 8px 16px;
                font-size: 13px;
            }

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

            .footer-desc {
                max-width: 100%;
            }

            .sec-cta h2 {
                font-size: 26px;
                line-height: 36px;
            }

            .section-head h2 {
                font-size: 24px;
                line-height: 32px;
            }
        }

        @media (max-width: 575px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-buttons .btn {
                width: 100%;
                text-align: center;
            }

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

            .cta-buttons .btn {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #1B2A4A;
            --primary-light: #2A3D66;
            --accent: #F0B35A;
            --accent-hover: #F7C579;
            --teal: #3CCFBE;
            --bg-light: #F8F6F1;
            --bg-dark: #101623;
            --text-main: #23283A;
            --text-muted: #5B6478;
            --border: #E4E1D8;
            --radius-btn: 8px;
            --radius-card: 16px;
            --radius-input: 6px;
            --radius-tag: 999px;
            --shadow-light: 0 2px 8px rgba(16, 22, 35, 0.06);
            --shadow-deep: 0 12px 32px rgba(16, 22, 35, 0.12);
            --space-section: 80px;
            --space-section-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 26px;
            color: var(--text-main);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        a:hover {
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        input {
            border: none;
            outline: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .page-main {
            padding-top: 64px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: 64px;
            background: rgba(16, 22, 35, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            position: relative;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 20px;
            height: 20px;
            color: var(--accent);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .hamburger {
            display: none;
            padding: 8px;
            flex-shrink: 0;
        }

        .hamburger-line {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            margin: 5px 0;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            margin: 0;
            padding: 0;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: #C9CDD8;
            padding: 8px 2px;
            position: relative;
            transition: color 0.2s ease;
        }

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

        .nav-link.active {
            color: #fff;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .search-box {
            position: relative;
        }

        .search-box input {
            height: 34px;
            width: 200px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid transparent;
            padding: 0 36px 0 14px;
            color: #fff;
            font-size: 14px;
            transition: all 0.2s ease;
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .search-box input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.12);
        }

        .search-box i {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #C9CDD8;
            font-size: 14px;
            pointer-events: none;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            height: 42px;
            transition: all 0.2s ease;
            line-height: 1;
            border: none;
        }

        .btn-sm {
            height: 34px;
            padding: 0 16px;
            font-size: 14px;
        }

        .btn-lg {
            height: 48px;
            padding: 0 28px;
            font-size: 16px;
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(240, 179, 90, 0.3);
        }

        .btn-accent:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.7);
            background: transparent;
            color: #fff;
        }

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

        .btn-primary {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .btn-primary:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(27, 42, 74, 0.3);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb {
            margin: 0;
            padding: 0;
            background: none;
        }

        .breadcrumb-item {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 20px;
        }

        .breadcrumb-item a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

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

        .breadcrumb-item.active {
            color: var(--text-main);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 240px;
            display: inline-block;
            vertical-align: bottom;
        }

        .breadcrumb-item+.breadcrumb-item::before {
            content: "/";
            color: #B5B0A6;
            padding: 0 8px;
        }

        /* ===== Article Head ===== */
        .article-head-section {
            background: #fff;
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .article-head-inner {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-head-inner h1 {
            font-size: 36px;
            line-height: 44px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 20px;
        }

        .meta-item i {
            font-size: 14px;
            color: var(--accent);
        }

        .category-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 500;
            color: #B07E2A;
            background: rgba(240, 179, 90, 0.12);
            border-radius: var(--radius-tag);
            padding: 2px 10px;
        }

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 48px 0 56px;
        }

        .article-body-inner {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-main);
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 36px;
            margin-top: 48px;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 28px;
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--primary);
        }

        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            line-height: 24px;
            margin-top: 28px;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-light);
            border-radius: 8px;
            padding: 16px 24px;
            margin: 24px 0;
            font-size: 15px;
            line-height: 24px;
            color: var(--text-muted);
        }

        .article-content img {
            max-width: 100%;
            border-radius: 8px;
            margin: 24px 0;
        }

        .article-content ul {
            list-style: none;
            margin: 16px 0 24px;
            padding: 0;
        }

        .article-content ul li {
            position: relative;
            padding-left: 16px;
            margin-bottom: 8px;
            font-size: 16px;
            line-height: 26px;
        }

        .article-content ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            width: 5px;
            height: 5px;
            background: var(--accent);
            border-radius: 50%;
        }

        .article-content ol {
            list-style: decimal;
            margin: 16px 0 24px;
            padding-left: 20px;
        }

        .article-content ol li {
            margin-bottom: 8px;
            font-size: 16px;
            line-height: 26px;
        }

        .article-content pre {
            background: var(--bg-dark);
            color: #D5D9E2;
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 14px;
            line-height: 22px;
            border-radius: 8px;
            padding: 20px 24px;
            overflow-x: auto;
            margin: 24px 0;
        }

        .article-content code {
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 14px;
            background: rgba(27, 42, 74, 0.06);
            padding: 2px 6px;
            border-radius: 4px;
        }

        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid var(--accent);
            transition: color 0.2s ease;
        }

        .article-content a:hover {
            color: var(--accent);
        }

        .article-empty {
            text-align: center;
            padding: 80px 24px;
        }

        .article-empty i {
            font-size: 48px;
            color: #C9CDD8;
            margin-bottom: 16px;
            display: block;
        }

        .article-empty h3 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .article-empty p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ===== Article Bottom ===== */
        .article-bottom-section {
            padding: 0 0 56px;
        }

        .article-bottom-inner {
            max-width: 760px;
            margin: 0 auto;
            border-top: 1px solid var(--border);
            padding-top: 32px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }

        .tag-list .tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 500;
            color: #B07E2A;
            background: rgba(240, 179, 90, 0.12);
            border-radius: var(--radius-tag);
            padding: 2px 12px;
        }

        .article-pager {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .pager-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 0;
            transition: color 0.2s ease;
        }

        .pager-link:hover {
            color: var(--accent);
        }

        .pager-link.next {
            margin-left: auto;
        }

        .pager-link i {
            font-size: 12px;
        }

        .pager-link.disabled {
            color: #B5B0A6;
            pointer-events: none;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 56px 0 72px;
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 36px;
            color: var(--primary);
            text-align: center;
            margin-bottom: 40px;
            position: relative;
        }

        .section-title::after {
            content: "";
            display: block;
            width: 40px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
            margin: 16px auto 0;
        }

        .post-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            transition: all 0.2s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .post-cover {
            position: relative;
            overflow: hidden;
            border-radius: 0;
        }

        .post-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .post-card:hover .post-cover img {
            transform: scale(1.04);
        }

        .post-body {
            padding: 20px 20px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .tag-category {
            display: inline-flex;
            width: fit-content;
            font-size: 12px;
            font-weight: 500;
            color: #B07E2A;
            background: rgba(240, 179, 90, 0.12);
            border-radius: var(--radius-tag);
            padding: 2px 10px;
            margin-bottom: 12px;
        }

        .post-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 26px;
            color: var(--text-main);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-body p {
            font-size: 14px;
            line-height: 22px;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        .post-footer span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .post-footer a {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            transition: color 0.2s ease;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(rgba(16, 22, 35, 0.92), rgba(16, 22, 35, 0.85)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 40px;
        }

        .cta-inner p {
            font-size: 16px;
            color: #C9CDD8;
            margin-bottom: 28px;
            line-height: 26px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: #C9CDD8;
            padding-top: 64px;
            font-size: 14px;
            line-height: 22px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            width: 20px;
            height: 20px;
            color: var(--accent);
        }

        .footer-brand-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 22px;
            color: #A0A6B4;
            margin-bottom: 16px;
            max-width: 280px;
        }

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

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            color: #C9CDD8;
            font-size: 16px;
            transition: all 0.2s ease;
        }

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

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

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

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

        .footer-links a {
            color: #C9CDD8;
            font-size: 14px;
            line-height: 22px;
            transition: color 0.2s ease;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #C9CDD8;
            font-size: 14px;
            line-height: 22px;
            margin-bottom: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
        }

        .footer-copyright {
            font-size: 12px;
            line-height: 18px;
            color: #6B7280;
            text-align: center;
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (min-width: 992px) {
            #siteNav {
                display: flex !important;
                align-items: center;
                justify-content: space-between;
                flex: 1;
                margin-left: 32px;
                gap: 20px;
            }
        }

        @media (max-width: 991px) {
            .site-header {
                height: 56px;
            }

            .header-inner {
                height: 56px;
            }

            .hamburger {
                display: block;
            }

            #siteNav {
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--bg-dark);
                padding: 16px 24px 24px;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
                border-top: 1px solid rgba(255, 255, 255, 0.06);
                display: none;
            }

            #siteNav.collapse.show {
                display: block;
            }

            .nav-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                margin-bottom: 16px;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links .nav-link {
                display: block;
                padding: 12px 0;
                font-size: 18px;
                font-weight: 500;
                color: #fff;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }

            .nav-links .nav-link.active {
                color: var(--accent);
            }

            .nav-links .nav-link.active::after {
                display: none;
            }

            .nav-actions {
                display: flex;
                align-items: center;
                gap: 10px;
                flex-wrap: wrap;
            }

            .search-box {
                flex: 1;
                min-width: 120px;
            }

            .search-box input {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .page-main {
                padding-top: 56px;
            }

            .article-head-section {
                padding: 32px 0 24px;
            }

            .article-head-inner h1 {
                font-size: 28px;
                line-height: 36px;
            }

            .article-meta {
                gap: 12px;
            }

            .article-body-section {
                padding: 32px 0 40px;
            }

            .article-body-inner {
                padding: 0 8px;
            }

            .related-section {
                padding: 40px 0 48px;
            }

            .section-title {
                font-size: 24px;
                line-height: 32px;
                margin-bottom: 32px;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-inner h2 {
                font-size: 26px;
                line-height: 34px;
            }

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

        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .breadcrumb-item.active {
                max-width: 160px;
            }

            .article-pager {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .pager-link.next {
                margin-left: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 480px) {
            .brand-text {
                font-size: 16px;
            }

            .nav-actions .btn {
                padding: 0 12px;
                font-size: 13px;
            }

            .article-head-inner h1 {
                font-size: 24px;
                line-height: 32px;
            }

            .meta-item {
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1B2A4A;
            --primary-light: #2A3D66;
            --accent: #F0B35A;
            --accent-hover: #F7C579;
            --teal: #3CCFBE;
            --light-bg: #F8F6F1;
            --dark-bg: #101623;
            --text-main: #23283A;
            --text-secondary: #5B6478;
            --border: #E4E1D8;
            --radius-btn: 8px;
            --radius-card: 16px;
            --radius-input: 6px;
            --shadow-sm: 0 2px 8px rgba(16, 22, 35, 0.06);
            --shadow-lg: 0 12px 32px rgba(16, 22, 35, 0.12);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: #fff;
            color: var(--text-main);
            line-height: 1.6;
            padding-top: 64px;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        button {
            background: none;
            border: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin-inline: auto;
            padding-inline: 20px;
        }
        ::selection {
            background: rgba(240, 179, 90, .35);
        }

        /* ---------- Header ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            height: 64px;
            background: rgba(16, 22, 35, .92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
            position: relative;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .5px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 22px;
            height: 22px;
            color: var(--accent);
        }
        .brand-text {
            white-space: nowrap;
        }
        .hamburger {
            display: none;
        }
        .navbar-collapse {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: #C9CDD8;
            padding: 8px 2px;
            position: relative;
            border-bottom: 2px solid transparent;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid transparent;
            border-radius: 20px;
            padding: 0 14px;
            width: 200px;
            height: 34px;
        }
        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 13px;
            width: 100%;
        }
        .search-box input::placeholder {
            color: #8A9BB5;
        }
        .search-box i {
            color: #8A9BB5;
            font-size: 12px;
        }
        .search-box:focus-within {
            border-color: var(--accent);
        }

        /* ---------- Buttons ---------- */
        .btn {
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(240, 179, 90, .3);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            border: 1px solid #fff;
            background: transparent;
            color: #fff;
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--dark-bg);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(255, 255, 255, .15);
        }
        .btn-primary {
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(27, 42, 74, .25);
        }
        .btn-lg {
            height: 48px;
            padding: 12px 28px;
            font-size: 16px;
        }
        .btn-sm {
            height: 34px;
            padding: 0 16px;
            font-size: 13px;
            border-radius: var(--radius-btn);
        }

        /* ---------- Page Hero ---------- */
        .page-hero {
            position: relative;
            isolation: isolate;
            background: linear-gradient(105deg, rgba(16, 22, 35, .94), rgba(16, 22, 35, .72)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 110px 0 72px;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            z-index: -1;
            background-image: radial-gradient(rgba(255, 255, 255, .3) 1px, transparent 1px);
            background-size: 64px 64px;
            opacity: .3;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
            font-size: 13px;
            color: #9AA3B5;
        }
        .breadcrumb-nav a {
            color: #C9CDD8;
        }
        .breadcrumb-nav a:hover {
            color: var(--accent);
        }
        .page-hero h1 {
            font-size: 44px;
            line-height: 1.2;
            color: #fff;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .page-hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: #D5D9E2;
            max-width: 660px;
            margin-bottom: 28px;
        }
        .page-hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ---------- Section Base ---------- */
        section {
            padding: 80px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* ---------- Security Intro ---------- */
        .security-intro {
            background: var(--light-bg);
            padding: 56px 0;
        }
        .intro-stat {
            text-align: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 16px;
            height: 100%;
            transition: box-shadow .2s ease;
        }
        .intro-stat:hover {
            box-shadow: var(--shadow-sm);
        }
        .stat-num {
            display: block;
            font-size: 36px;
            font-weight: 700;
            color: var(--teal);
            font-variant-numeric: tabular-nums;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* ---------- Security Cards ---------- */
        .security-cards {
            background: #fff;
        }
        .security-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            height: 100%;
            transition: all .25s ease;
        }
        .security-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .security-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(240, 179, 90, .12);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }
        .security-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .security-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin: 0;
        }

        /* ---------- Security Badges ---------- */
        .security-badges {
            background: var(--dark-bg);
            padding: 52px 0;
            position: relative;
            overflow: hidden;
        }
        .security-badges::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, .18) 1px, transparent 1px);
            background-size: 56px 56px;
            opacity: .25;
            pointer-events: none;
        }
        .badges-row {
            position: relative;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .badge-cert {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            color: #D5D9E2;
            font-size: 13px;
            padding: 8px 18px;
            border-radius: 999px;
            transition: border-color .2s ease, background .2s ease;
        }
        .badge-cert i {
            color: var(--accent);
            font-size: 14px;
        }
        .badge-cert:hover {
            background: rgba(255, 255, 255, .14);
            border-color: rgba(240, 179, 90, .5);
        }

        /* ---------- Security Process ---------- */
        .security-process {
            background: var(--light-bg);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-item {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            border: 1px solid var(--border);
            transition: box-shadow .2s ease;
        }
        .process-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .process-num {
            width: 40px;
            height: 40px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
            font-variant-numeric: tabular-nums;
        }
        .process-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .process-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ---------- Security Tip ---------- */
        .security-tip {
            background: #fff;
        }
        .tip-box {
            display: flex;
            align-items: center;
            gap: 48px;
            background: var(--light-bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 40px;
        }
        .tip-img {
            flex: 0 0 42%;
        }
        .tip-img img {
            width: 100%;
            border-radius: 12px;
            object-fit: cover;
            aspect-ratio: 16/10;
        }
        .tip-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .tip-content ul {
            margin: 0 0 24px;
            padding: 0;
        }
        .tip-content li {
            position: relative;
            padding-left: 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 2;
        }
        .tip-content li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 13px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--teal);
        }
        .tip-content .btn {
            margin-right: 8px;
        }

        /* ---------- Security FAQ ---------- */
        .security-faq {
            background: var(--light-bg);
        }
        .container-narrow {
            max-width: 800px;
        }
        .custom-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 12px;
            background: #fff;
        }
        .custom-accordion .accordion-button {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            background: #fff;
            padding: 18px 24px;
            box-shadow: none;
            transition: border-color .2s ease;
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--text-main);
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent);
        }
        .custom-accordion .accordion-button::after {
            content: '+';
            background-image: none;
            font-size: 24px;
            font-weight: 300;
            color: var(--accent);
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform .2s ease;
        }
        .custom-accordion .accordion-button:not(.collapsed)::after {
            content: '×';
            transform: rotate(0deg);
        }
        .custom-accordion .accordion-body {
            padding: 16px 24px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

        /* ---------- Security CTA ---------- */
        .security-cta {
            background: var(--dark-bg);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .security-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, .22) 1px, transparent 1px);
            background-size: 52px 52px;
            opacity: .3;
            pointer-events: none;
        }
        .cta-card {
            position: relative;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-card h2 {
            font-size: 30px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-card p {
            color: #C9CDD8;
            font-size: 16px;
            margin-bottom: 28px;
        }
        .cta-card .btn {
            margin: 0 6px;
        }

        /* ---------- Footer ---------- */
        .footer {
            background: var(--dark-bg);
            color: #C9CDD8;
            padding-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 20px;
            height: 20px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #8A9BB5;
            margin-bottom: 20px;
            max-width: 280px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, .15);
            color: #C9CDD8;
            font-size: 14px;
            transition: all .2s ease;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
        }
        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: #9AA3B5;
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact li {
            display: flex;
            gap: 8px;
            font-size: 14px;
            color: #9AA3B5;
            line-height: 1.8;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
            margin-top: 4px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 16px 0;
            text-align: center;
        }
        .footer-copyright {
            font-size: 12px;
            color: #6B7280;
            margin: 0;
        }

        /* ---------- Responsive ---------- */
        @media (min-width: 992px) {
            .navbar-collapse.collapse {
                display: flex !important;
            }
        }
        @media (max-width: 991.98px) {
            body {
                padding-top: 56px;
            }
            .site-header,
            .header-inner {
                height: 56px;
            }
            .hamburger {
                display: flex;
                flex-direction: column;
                justify-content: center;
                gap: 5px;
                width: 40px;
                height: 40px;
                border: 1px solid rgba(255, 255, 255, .2);
                border-radius: 8px;
                cursor: pointer;
                flex-shrink: 0;
            }
            .hamburger-line {
                display: block;
                width: 18px;
                height: 2px;
                background: #fff;
                margin: 0 auto;
                border-radius: 2px;
            }
            .navbar-collapse {
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--dark-bg);
                border-top: 1px solid rgba(255, 255, 255, .08);
                padding: 16px 20px 24px;
                flex-direction: column;
                gap: 16px;
                box-shadow: 0 16px 32px rgba(0, 0, 0, .25);
            }
            .navbar-collapse.show {
                display: flex;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                gap: 6px;
            }
            .nav-link {
                display: block;
                padding: 12px 8px;
                font-size: 18px;
                font-weight: 600;
                border-radius: 8px;
                border-bottom: 1px solid rgba(255, 255, 255, .06);
            }
            .nav-link.active {
                background: rgba(240, 179, 90, .08);
                border-bottom-color: var(--accent);
            }
            .nav-actions {
                width: 100%;
                flex-direction: column;
                gap: 12px;
            }
            .search-box {
                width: 100%;
            }
            .page-hero {
                padding: 84px 0 56px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .page-hero-desc {
                font-size: 15px;
            }
            section {
                padding: 64px 0;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
            }
            .process-item:not(:last-child)::after {
                display: none;
            }
            .tip-box {
                flex-direction: column;
                gap: 24px;
                padding: 24px;
            }
            .tip-img {
                flex: none;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .page-hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .security-cta .btn {
                width: 100%;
                max-width: 320px;
                margin: 8px 0;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-inline: 16px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero-desc {
                font-size: 14px;
                line-height: 1.7;
            }
            section {
                padding: 48px 0;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .process-item {
                padding: 22px 20px;
            }
            .security-card {
                padding: 24px 20px;
            }
            .intro-stat {
                padding: 20px 12px;
            }
            .stat-num {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .badges-row {
                gap: 10px;
            }
            .badge-cert {
                font-size: 12px;
                padding: 6px 12px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #1B2A4A;
  --primary-light: #2A3D66;
  --accent: #F0B35A;
  --accent-hover: #F7C579;
  --energy: #3CCFBE;
  --light-bg: #F8F6F1;
  --dark-bg: #101623;
  --text-main: #23283A;
  --text-muted: #5B6478;
  --border: #E4E1D8;
  --radius-btn: 8px;
  --radius-card: 16px;
  --radius-input: 6px;
  --radius-tag: 999px;
  --shadow-light: 0 2px 8px rgba(16,22,35,0.06);
  --shadow-deep: 0 12px 32px rgba(16,22,35,0.12);
  --space-section: 80px;
  --space-section-mobile: 48px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; }
button, input { font-family: inherit; }
.container { max-width: 1200px; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(16,22,35,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner {
  display: flex;
  align-items: center;
  min-height: 64px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}
.brand-icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
}
.brand:hover { color: var(--accent-hover); }
.brand-text { letter-spacing: .5px; }

.navbar-collapse {
  flex: 1;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  color: #C9CDD8;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px !important;
  border-radius: 6px;
  position: relative;
  transition: color .2s ease;
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: var(--accent); }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 14px;
  background: rgba(255,255,255,.08);
  border-radius: 20px;
  width: 190px;
  border: 1px solid transparent;
  transition: border-color .2s ease;
}
.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13px;
  min-width: 0;
}
.search-box input::placeholder { color: #8B93A7; }
.search-box i { color: #8B93A7; font-size: 13px; }
.search-box:focus-within { border-color: var(--accent); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 8px;
  padding: 9px;
  cursor: pointer;
}
.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

/* Buttons */
.btn { border-radius: var(--radius-btn); font-size: 14px; font-weight: 500; padding: 8px 18px; transition: all .2s ease; }
.btn-lg { font-size: 16px; padding: 12px 28px; }
.btn-sm { font-size: 13px; padding: 7px 16px; }
.btn-accent {
  background: var(--accent);
  color: var(--primary);
  border: 1px solid var(--accent);
  font-weight: 600;
}
.btn-accent:hover {
  background: var(--accent-hover);
  color: var(--primary);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(240,179,90,.3);
}
.btn-accent:active { transform: translateY(0); }
.btn-outline-light {
  border: 1px solid rgba(255,255,255,.6);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover {
  background: #fff;
  color: var(--dark-bg);
  border-color: #fff;
}
.btn-outline-primary {
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline-primary:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Page Hero */
.page-hero {
  position: relative;
  padding: 96px 0 80px;
  background: linear-gradient(rgba(16,22,35,.9), rgba(16,22,35,.72)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #8B93A7;
  margin-bottom: 14px;
  list-style: none;
  padding: 0;
}
.page-hero .breadcrumb a { color: #C9CDD8; }
.page-hero .breadcrumb a:hover { color: var(--accent); }
.page-hero .breadcrumb i { font-size: 10px; opacity: .6; }
.page-hero h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 44px;
  margin-bottom: 14px;
  color: #fff;
}
.page-hero .hero-lead {
  font-size: 16px;
  line-height: 28px;
  color: #D5D9E2;
  max-width: 620px;
  margin-bottom: 28px;
}
.hero-search-wrap {
  position: relative;
  max-width: 500px;
  z-index: 1;
}
.hero-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 50px;
  padding: 4px 4px 4px 20px;
  gap: 10px;
  transition: border-color .2s ease, background .2s ease;
}
.hero-search:focus-within { border-color: var(--accent); background: rgba(255,255,255,.14); }
.hero-search i { color: rgba(255,255,255,.6); font-size: 14px; }
.hero-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: 14px;
  padding: 9px 0;
  min-width: 0;
}
.hero-search input::placeholder { color: rgba(255,255,255,.5); }
.hero-search .btn-search {
  background: var(--accent);
  color: var(--primary);
  border: none;
  border-radius: 50px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background .2s ease, transform .2s ease;
}
.hero-search .btn-search:hover { background: var(--accent-hover); transform: translateY(-1px); }

.hero-star {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.6);
  animation: twinkle 3.2s ease-in-out infinite;
  opacity: 0;
}
.hero-star.s1 { width: 4px; height: 4px; top: 24%; right: 18%; animation-delay: 0s; }
.hero-star.s2 { width: 3px; height: 3px; top: 36%; right: 26%; animation-delay: 1.2s; }
.hero-star.s3 { width: 2px; height: 2px; top: 18%; right: 34%; animation-delay: 2s; }
.hero-star.s4 { width: 3px; height: 3px; bottom: 28%; right: 12%; animation-delay: .6s; }
@keyframes twinkle {
  0%, 100% { opacity: 0; transform: scale(.6); }
  50% { opacity: .9; transform: scale(1); }
}

/* Stats */
.stats-strip {
  padding: 44px 0;
  background: var(--light-bg);
  border-bottom: 1px solid var(--border);
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-item {
  text-align: center;
  padding: 12px 16px;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--energy);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  margin-bottom: 4px;
}
.stat-label { font-size: 13px; color: var(--text-muted); }

/* Section Head */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: #B07E2A;
  background: rgba(240,179,90,.12);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 36px;
  color: var(--text-main);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* FAQ */
.faq-section { padding: var(--space-section) 0; background: #fff; }
.faq-accordion { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item:hover {
  border-color: rgba(240,179,90,.5) !important;
  box-shadow: var(--shadow-light);
}
.faq-item .accordion-button {
  background: #fff;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  padding: 20px 24px;
  border: none;
  box-shadow: none;
  transition: color .2s ease;
}
.faq-item .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: #fff;
  box-shadow: none;
}
.faq-item .accordion-button:focus { box-shadow: none; }
.faq-item .accordion-button::after {
  background: none;
  content: '+';
  font-size: 22px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  transform: none;
  width: auto;
  height: auto;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  transition: transform .2s ease, color .2s ease;
}
.faq-item .accordion-button:not(.collapsed)::after {
  content: '×';
  transform: none;
}
.faq-answer {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 24px;
  color: var(--text-muted);
}

.faq-empty {
  text-align: center;
  padding: 44px 20px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  background: var(--light-bg);
  color: var(--text-muted);
}
.faq-empty i { font-size: 30px; color: #C9CDD8; margin-bottom: 10px; display: inline-block; }
.faq-empty-sub { font-size: 13px; color: #9AA1AF; }

/* Help Banner */
.help-banner {
  max-width: 820px;
  margin: 36px auto 0;
  background: var(--light-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}
.help-banner h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.help-banner p { font-size: 14px; color: var(--text-muted); margin-bottom: 18px; }
.help-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--text-main);
}
.help-contact span { display: inline-flex; align-items: center; gap: 8px; }
.help-contact i { color: var(--accent); }
.help-banner .img-wrap {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-light);
}
.help-banner .img-wrap img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

/* Resource Cards */
.resource-section { padding: var(--space-section) 0; background: var(--light-bg); }
.resource-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  height: 100%;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-deep);
  border-color: rgba(240,179,90,.5);
}
.resource-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(240,179,90,.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.resource-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}
.resource-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 24px;
}
.resource-card .card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: color .2s ease;
}
.resource-card .card-link i { margin-left: 4px; font-size: 12px; transition: transform .2s ease; }
.resource-card:hover .card-link { color: var(--accent); }
.resource-card:hover .card-link i { transform: translateX(4px); }

/* CTA */
.cta-section {
  padding: 72px 0;
  background: var(--dark-bg);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(240,179,90,.15) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: .25;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.cta-inner h2 { color: #fff; font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.cta-inner > p { color: #C9CDD8; font-size: 15px; margin-bottom: 28px; }
.contact-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 28px;
}
.contact-option {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  padding: 12px 20px;
  color: #E6E8EF;
  font-size: 14px;
}
.contact-option i { color: var(--accent); font-size: 16px; }
.cta-buttons { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* Footer */
.footer {
  background: var(--dark-bg);
  color: #C9CDD8;
  padding-top: 60px;
}
.footer a { color: #C9CDD8; }
.footer a:hover { color: var(--accent); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand-text { letter-spacing: .5px; }
.footer-desc { font-size: 14px; line-height: 24px; color: #8B93A7; margin-bottom: 18px; max-width: 320px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  color: #C9CDD8;
  font-size: 15px;
  transition: all .2s ease;
}
.footer-social a:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); }
.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links li { margin-bottom: 10px; font-size: 14px; }
.footer-links a { transition: color .2s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-contact li { color: #C9CDD8; display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 18px 0;
}
.footer-copyright {
  margin: 0;
  font-size: 12px;
  color: #6B7280;
  text-align: center;
}

/* Responsive */
@media (min-width: 992px) {
  #siteNav {
    display: flex !important;
    flex-direction: row;
  }
}
@media (max-width: 991.98px) {
  .header-inner { min-height: 56px; }
  .hamburger { display: flex; }
  .site-header { min-height: 56px; }
  #siteNav.collapse {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(16,22,35,.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    box-shadow: 0 20px 40px rgba(16,22,35,.4);
  }
  #siteNav.collapse:not(.show) { display: none; }
  #siteNav.collapsing {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(16,22,35,.97);
    padding: 12px 20px 24px;
  }
  #siteNav.collapse.show {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-bottom: 14px;
  }
  .nav-link {
    width: 100%;
    padding: 12px 16px !important;
    font-size: 16px;
    color: #E6E8EF;
  }
  .nav-link.active { color: var(--accent); background: rgba(240,179,90,.08); }
  .nav-link.active::after { display: none; }
  .nav-actions {
    width: 100%;
    flex-wrap: wrap;
  }
  .search-box { width: 100%; }
  .nav-actions .btn { flex: 1; text-align: center; }
  .page-hero { padding: 72px 0 56px; }
  .page-hero h1 { font-size: 28px; line-height: 36px; }
  .page-hero .hero-lead { font-size: 15px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); row-gap: 20px; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); padding-bottom: 16px; }
  .stat-item:nth-last-child(-n+2) { border-bottom: none; }
  .crp-section, .faq-section, .resource-section { padding: var(--space-section-mobile) 0; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: 24px; line-height: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .hero-search { border-radius: 14px; padding: 12px 14px; }
  .hero-search .btn-search { padding: 8px 16px; border-radius: 8px; }
  .help-banner { padding: 24px; }
  .help-banner .img-wrap img { height: 140px; }
  .cta-inner h2 { font-size: 24px; }
  .contact-options { flex-direction: column; align-items: stretch; }
  .contact-option { justify-content: center; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn { width: 100%; }
}
@media (max-width: 575px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat-num { font-size: 26px; }
  .resource-card { padding: 24px 20px; }
  .faq-item .accordion-button { font-size: 14px; padding: 18px 18px; }
  .faq-answer { padding: 0 18px 18px; }
}