/* roulang page: index */
:root {
  --primary: #0d1b3d;
  --primary-dark: #081229;
  --primary-light: #132a52;
  --accent: #c9a962;
  --accent-dark: #a8853f;
  --accent-light: #e6cd86;
  --body-bg: #f4f6fb;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-sub: #5b6b85;
  --border-line: #e6ebf2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 14px rgba(13, 27, 61, 0.06);
  --shadow-md: 0 10px 30px rgba(13, 27, 61, 0.09);
  --shadow-lg: 0 20px 44px rgba(13, 27, 61, 0.14);
  --grad-gold: linear-gradient(135deg, #d4af6a 0%, #f0d992 50%, #b78f46 100%);
  --transition: 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--body-bg);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; }

.site-wrapper { display: flex; min-height: 100vh; }

.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 260px;
  background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  padding: 28px 0 24px;
  border-right: 1px solid rgba(201, 169, 98, 0.18);
}
.sidebar-brand { padding: 0 24px 26px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.brand-link { display: flex; align-items: center; gap: 12px; }
.brand-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--grad-gold);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary-dark);
  font-size: 20px;
  box-shadow: 0 6px 18px rgba(201, 169, 98, 0.35);
  flex-shrink: 0;
}
.brand-text { font-size: 18px; font-weight: 800; color: #fff; line-height: 1.3; letter-spacing: 0.3px; }
.brand-text small { display: block; font-size: 12px; font-weight: 500; color: rgba(255, 255, 255, 0.55); letter-spacing: 0.5px; margin-top: 2px; }

.sidebar-nav { flex: 1; padding: 22px 18px; display: flex; flex-direction: column; gap: 8px; }
.nav-link {
  display: flex; align-items: center; gap: 13px;
  padding: 13px 16px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.66);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  border-left: 3px solid transparent;
}
.nav-link i { width: 22px; text-align: center; font-size: 17px; }
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.06); transform: translateX(3px); }
.nav-link.active {
  background: linear-gradient(90deg, rgba(201, 169, 98, 0.22), rgba(201, 169, 98, 0.06));
  color: var(--accent-light);
  border-left-color: var(--accent);
}
.sidebar-foot { padding: 16px 20px 0; }
.foot-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 14px 16px;
  display: flex; align-items: center; gap: 10px;
}
.pulse-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}
.foot-card p { font-size: 12px; color: rgba(255, 255, 255, 0.5); line-height: 1.5; margin: 0; }
.foot-card p strong { color: #4ade80; font-size: 13px; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

.main-area {
  flex: 1;
  margin-left: 260px;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.page-content { flex: 1; }

.mobile-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: var(--primary-dark);
  padding: 14px 20px;
  position: sticky;
  top: 0;
  z-index: 1040;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
.mobile-brand { font-size: 18px; font-weight: 800; color: #fff; line-height: 1.3; }
.mobile-brand span { display: block; font-size: 11px; color: rgba(255, 255, 255, 0.55); font-weight: 500; }
.nav-toggle {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.12); }
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(4, 10, 25, 0.55);
  backdrop-filter: blur(4px);
  z-index: 1045;
  opacity: 0;
  transition: opacity 0.3s;
}
.nav-overlay.show { display: block; opacity: 1; }

.container-lg { max-width: 1240px; margin: 0 auto; padding: 0 28px; }
.section { padding: 80px 28px; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: rgba(201, 169, 98, 0.12);
  border: 1px solid rgba(201, 169, 98, 0.28);
  padding: 6px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; color: var(--primary); line-height: 1.35; margin-bottom: 12px; }
.section-head p { font-size: 15px; color: var(--text-sub); line-height: 1.7; }
.section-head.light-head .section-tag { color: var(--accent-light); background: rgba(201, 169, 98, 0.14); border-color: rgba(201, 169, 98, 0.35); }
.section-head.light-head h2 { color: #fff; }
.section-head.light-head p { color: rgba(255, 255, 255, 0.6); }

.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  background: linear-gradient(120deg, rgba(8, 18, 41, 0.97) 0%, rgba(13, 27, 61, 0.9) 55%, rgba(37, 55, 94, 0.8) 100%), url("/assets/images/backpic/back-1.png") center center / cover no-repeat;
  padding: 70px 28px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 98, 0.22), transparent 60%);
  top: -120px; right: -80px;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06), transparent 60%);
  bottom: -100px; left: 20%;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 800px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  backdrop-filter: blur(6px);
}
.hero-badge i { color: var(--accent-light); }
.hero h1 {
  font-size: clamp(32px, 4vw, 50px);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 .gold {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .hero-text {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.85;
  max-width: 640px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.4px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-gold {
  background: var(--grad-gold);
  color: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(201, 169, 98, 0.35);
}
.btn-gold:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(201, 169, 98, 0.45);
  color: var(--primary-dark);
}
.btn-outline {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-3px);
}
.btn-dark { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(13, 27, 61, 0.18); }
.btn-dark:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 12px 28px rgba(13, 27, 61, 0.3); color: #fff; }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12); }
.btn-light:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18); color: var(--primary); }
.hero-metrics {
  display: flex;
  gap: 32px;
  margin-top: 42px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 28px;
}
.metric { display: flex; flex-direction: column; }
.metric strong { color: var(--accent-light); font-size: 24px; font-weight: 800; }
.metric span { font-size: 13px; color: rgba(255, 255, 255, 0.55); }

.about-section { background: #fff; border-bottom: 1px solid var(--border-line); }
.about-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; align-items: center; }
.about-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-media img { width: 100%; height: 420px; object-fit: cover; }
.about-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 27, 61, 0.25), transparent 50%);
  pointer-events: none;
}
.about-content h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; color: var(--primary); line-height: 1.35; margin-bottom: 18px; }
.about-content > p { font-size: 15px; color: var(--text-sub); line-height: 1.85; }
.about-list { display: grid; gap: 16px; margin: 26px 0 32px; }
.about-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; color: var(--text-main); }
.about-list li i { color: var(--accent); font-size: 17px; margin-top: 3px; flex-shrink: 0; }

.categories-section { background: var(--body-bg); }
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--border-line);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover, var(--shadow-lg)); }
.category-img { position: relative; height: 260px; overflow: hidden; }
.category-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.category-card:hover .category-img img { transform: scale(1.05); }
.category-img::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 27, 61, 0.82), transparent 60%);
  z-index: 1;
}
.category-tag {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 2;
  background: rgba(13, 27, 61, 0.8);
  border: 1px solid rgba(201, 169, 98, 0.4);
  color: var(--accent-light);
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  backdrop-filter: blur(6px);
}
.category-body { padding: 28px; }
.category-body h3 { font-size: 21px; font-weight: 800; color: var(--primary); margin-bottom: 12px; }
.category-body p { font-size: 14px; color: var(--text-sub); line-height: 1.75; margin-bottom: 18px; }
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-dark);
  font-weight: 700;
  font-size: 14px;
}
.category-link:hover { color: var(--primary); gap: 12px; }

.features-section { background: #fff; }
.feature-card {
  background: var(--body-bg);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
  height: 100%;
}
.feature-card:hover { background: #fff; box-shadow: var(--shadow-md); border-color: var(--border-line); transform: translateY(-4px); }
.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 18px;
  background: var(--grad-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary-dark);
  box-shadow: 0 8px 20px rgba(201, 169, 98, 0.3);
}
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.feature-card p { font-size: 13.5px; color: var(--text-sub); line-height: 1.7; }

.posts-section { background: linear-gradient(180deg, #f0f3f9, #e9eef7); }
.post-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px; }
.post-item {
  display: flex;
  gap: 22px;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px 28px;
  border: 1px solid var(--border-line);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.post-item:hover { box-shadow: var(--shadow-md); transform: translateX(6px); }
.post-index { font-size: 28px; font-weight: 800; color: rgba(201, 169, 98, 0.38); min-width: 36px; }
.post-content { flex: 1; }
.post-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 6px; flex-wrap: wrap; }
.post-cat {
  background: rgba(201, 169, 98, 0.12);
  color: var(--accent-dark);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.post-date { font-size: 12px; color: #a0aabc; }
.post-content h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; line-height: 1.5; }
.post-content h3 a { color: var(--primary); }
.post-content h3 a:hover { color: var(--accent-dark); }
.post-content p {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty-tip {
  background: #fff;
  border: 1px dashed var(--border-line);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-sub);
  font-size: 15px;
}

.stats-section {
  background: linear-gradient(120deg, rgba(8, 18, 41, 0.95), rgba(13, 27, 61, 0.9)), url("/assets/images/backpic/back-2.png") center center / cover no-repeat;
  background-blend-mode: overlay;
  color: #fff;
  padding: 90px 28px;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition);
}
.stat-card:hover { background: rgba(255, 255, 255, 0.08); transform: translateY(-4px); }
.stat-num { font-size: 38px; font-weight: 800; color: var(--accent-light); letter-spacing: 1px; }
.stat-label { font-size: 13px; color: rgba(255, 255, 255, 0.6); margin-top: 6px; }

.process-section { background: #fff; }
.step-card {
  text-align: center;
  padding: 36px 22px;
  border-radius: var(--radius-md);
  background: var(--body-bg);
  border: 1px solid var(--border-line);
  height: 100%;
  transition: var(--transition);
}
.step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); background: #fff; }
.step-num {
  width: 48px; height: 48px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--grad-gold);
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(201, 169, 98, 0.3);
}
.step-card h3 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.step-card p { font-size: 13px; color: var(--text-sub); line-height: 1.7; }

.faq-section { background: var(--body-bg); }
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius-md) !important;
  border: 1px solid var(--border-line) !important;
  box-shadow: var(--shadow-sm);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-item .accordion-button {
  padding: 22px 26px;
  font-weight: 700;
  font-size: 15px;
  color: var(--primary);
  background: #fff;
  box-shadow: none;
  border-radius: var(--radius-md) !important;
}
.faq-item .accordion-button:not(.collapsed) {
  background: rgba(201, 169, 98, 0.06);
  color: var(--primary);
}
.faq-item .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.2);
  border-color: var(--accent);
}
.faq-item .accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23c9a962'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.faq-item .accordion-body { padding: 4px 26px 24px; color: var(--text-sub); font-size: 14px; line-height: 1.85; border-top: 1px solid var(--border-line); }

.cta-section {
  position: relative;
  background: linear-gradient(120deg, rgba(8, 18, 41, 0.94), rgba(13, 27, 61, 0.86)), url("/assets/images/backpic/back-3.png") center center / cover no-repeat;
  padding: 100px 28px;
  text-align: center;
  color: #fff;
}
.cta-section h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; color: #fff; margin-bottom: 14px; }
.cta-section p { font-size: 15px; color: rgba(255, 255, 255, 0.7); max-width: 560px; margin: 0 auto 30px; line-height: 1.8; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.site-footer { background: var(--primary-dark); color: rgba(255, 255, 255, 0.6); padding: 48px 28px 32px; }
.footer-top { max-width: 1240px; margin: 0 auto 36px; text-align: center; }
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 10px; letter-spacing: 0.5px; }
.footer-top p { font-size: 13px; max-width: 520px; margin: 0 auto; line-height: 1.8; color: rgba(255, 255, 255, 0.45); }
.footer-bottom { max-width: 1240px; margin: 0 auto; border-top: 1px solid rgba(255, 255, 255, 0.08); padding-top: 22px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; }
.footer-bottom span { color: rgba(255, 255, 255, 0.4); }

@media (max-width: 1199px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}

@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-media img { height: 320px; }
  .about-content { text-align: center; }
  .about-list { text-align: left; max-width: 540px; margin-left: auto; margin-right: auto; }
  .about-content .btn { margin: 0 auto; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

@media (max-width: 991px) {
  .sidebar { transform: translateX(-100%); transition: transform 0.35s ease; width: 280px; box-shadow: 6px 0 30px rgba(0, 0, 0, 0.25); }
  .sidebar.open { transform: translateX(0); }
  .main-area { margin-left: 0; }
  .mobile-topbar { display: flex; }
  .hero { min-height: 520px; padding: 60px 28px; }
  .hero::before { width: 340px; height: 340px; }
}

@media (max-width: 767px) {
  .section { padding: 60px 20px; }
  .hero { padding: 48px 20px; min-height: 480px; }
  .hero h1 { font-size: 30px; }
  .hero .hero-text { font-size: 14.5px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-metrics { gap: 22px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .post-item { flex-direction: row; padding: 20px; gap: 14px; }
  .post-index { font-size: 22px; min-width: 28px; }
}

@media (max-width: 520px) {
  .categories-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 12px; }
  .hero-metrics { gap: 16px; }
  .metric { min-width: 80px; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
}

/* roulang page: category1 */
:root {
  --brand: #e11d48;
  --brand-dark: #be123c;
  --brand-light: #fb7185;
  --navy: #0f172a;
  --navy-2: #1e293b;
  --gold: #f59e0b;
  --bg: #f4f6fb;
  --card-bg: #ffffff;
  --ink: #0f172a;
  --ink-soft: #475569;
  --muted: #94a3b8;
  --line: #e2e8f0;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 12px 32px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 44px rgba(15, 23, 42, .13);
  --transition: all .3s ease;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* ===== Button System ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 12px;
  font-weight: 600;
  padding: 12px 26px;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: pointer;
}

.btn-brand {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  box-shadow: 0 8px 22px rgba(225, 29, 72, .3);
}

.btn-brand:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(225, 29, 72, .38);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, .5);
  color: #fff;
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border-color: rgba(255, 255, 255, .9);
}

.btn-outline-brand {
  border-color: var(--brand);
  color: var(--brand);
  background: transparent;
}

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

.btn:focus-visible {
  outline: 3px solid rgba(225, 29, 72, .35);
  outline-offset: 3px;
}

/* ===== Mobile Nav ===== */
.mobile-nav {
  display: none;
  background: linear-gradient(135deg, #0b1526, #16263c);
  padding-top: 12px;
  padding-bottom: 12px;
  position: sticky;
  top: 0;
  z-index: 1050;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .18);
}

.mobile-nav .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
}

.mobile-nav .navbar-brand small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: rgba(255, 255, 255, .7);
  letter-spacing: 1px;
}

.mobile-nav .brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--gold));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  color: #fff;
  box-shadow: 0 6px 16px rgba(225, 29, 72, .35);
}

.custom-toggler {
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 12px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, .08);
}

.custom-toggler i {
  color: #fff;
  font-size: 18px;
}

.mobile-nav .navbar-collapse {
  margin-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-top: 10px;
}

.mobile-nav .navbar-nav {
  gap: 4px;
}

.mobile-nav .nav-link {
  color: rgba(255, 255, 255, .75);
  padding: 10px 14px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.mobile-nav .nav-link i {
  width: 20px;
  text-align: center;
  color: var(--brand-light);
}

.mobile-nav .nav-link.active {
  background: rgba(225, 29, 72, .18);
  color: #fff;
}

/* ===== Sidebar ===== */
.site-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 270px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: linear-gradient(180deg, #0b1526 0%, #101f36 100%);
  padding: 30px 22px;
  display: flex;
  flex-direction: column;
  z-index: 1020;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, .15) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, .15);
  border-radius: 99px;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 6px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  margin-bottom: 22px;
}

.sidebar-brand .brand-icon {
  width: 46px;
  height: 46px;
  min-width: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand), var(--gold));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 8px 20px rgba(225, 29, 72, .35);
}

.sidebar-brand .brand-txt {
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  line-height: 1.2;
}

.sidebar-brand .brand-sub {
  display: block;
  font-weight: 500;
  font-size: 11px;
  color: rgba(255, 255, 255, .6);
  letter-spacing: 2px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, .7);
  padding: 13px 16px;
  border-radius: 14px;
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.sidebar-nav .nav-link i {
  width: 20px;
  text-align: center;
  font-size: 15px;
  color: rgba(255, 255, 255, .45);
  transition: var(--transition);
}

.sidebar-nav .nav-link:hover {
  background: rgba(255, 255, 255, .06);
  color: #fff;
}

.sidebar-nav .nav-link.active {
  background: linear-gradient(135deg, rgba(225, 29, 72, .9), rgba(225, 29, 72, .6));
  color: #fff;
  box-shadow: 0 8px 20px rgba(225, 29, 72, .25);
  border-color: rgba(255, 255, 255, .08);
}

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

.sidebar-note {
  margin-top: auto;
  padding: 18px 16px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 16px;
}

.sidebar-note .note-icon {
  font-size: 20px;
  color: var(--gold);
  margin-bottom: 8px;
}

.sidebar-note .note-title {
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.sidebar-note p.note-text {
  color: rgba(255, 255, 255, .55);
  font-size: 13px;
  line-height: 1.6;
  margin: 0;
}

/* ===== Main ===== */
.site-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ===== Banner ===== */
.page-banner {
  position: relative;
  padding: 88px 0 70px;
  background: linear-gradient(120deg, #0b1526 0%, #13233c 55%, #1e3250 100%);
}

.page-banner .banner-overlay {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: .28;
  mix-blend-mode: luminosity;
}

.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 21, 38, .7) 0%, rgba(11, 21, 38, .35) 50%, rgba(11, 21, 38, .9) 100%);
}

.page-banner .banner-inner {
  position: relative;
  z-index: 3;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 99px;
  color: #fecdd3;
  font-size: 13px;
  letter-spacing: 1px;
  backdrop-filter: blur(6px);
  margin-bottom: 22px;
}

.page-banner h1 {
  color: #fff;
  font-size: clamp(30px, 4vw, 50px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: .5px;
  margin-bottom: 18px;
}

.page-banner h1 span {
  display: block;
  background: linear-gradient(135deg, #fda4af, #f59e0b);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: .78em;
  letter-spacing: 2px;
}

.page-banner .lead-text {
  color: rgba(255, 255, 255, .85);
  font-size: 17px;
  max-width: 680px;
  margin-bottom: 28px;
}

.banner-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-bottom: 34px;
}

.banner-meta span {
  color: rgba(255, 255, 255, .75);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.banner-meta i {
  color: var(--gold);
}

.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== Sections Global ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: #eef1f8;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: rgba(225, 29, 72, .08);
  padding: 6px 16px;
  border-radius: 99px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
  color: var(--ink);
}

.section-head p {
  color: var(--ink-soft);
  font-size: 16px;
  margin: 0;
}

.text-center .section-head {
  margin-left: auto;
  margin-right: auto;
}

/* ===== Overview Cards ===== */
.over-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  height: 100%;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.over-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--gold));
  opacity: 0;
  transition: var(--transition);
}

.over-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(225, 29, 72, .2);
}

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

.over-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(225, 29, 72, .1), rgba(245, 158, 11, .12));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--brand);
  margin-bottom: 20px;
}

.over-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.over-card p {
  color: var(--ink-soft);
  font-size: 15px;
  margin: 0;
  line-height: 1.75;
}

/* ===== Steps ===== */
.step-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  height: 100%;
  transition: var(--transition);
}

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

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 16px;
  box-shadow: 0 8px 18px rgba(225, 29, 72, .28);
}

.step-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.7;
  margin: 0;
}

.step-arrow {
  display: none;
}

/* ===== Gate Cards ===== */
.gate-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  transition: var(--transition);
}

.gate-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.gate-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}

.gate-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}

.gate-card:hover .gate-img img {
  transform: scale(1.06);
}

.gate-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, .4));
}

.gate-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, .9);
  color: var(--ink);
  padding: 5px 14px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
}

.gate-body {
  padding: 24px;
}

.gate-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.gate-body p {
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.7;
  margin-bottom: 16px;
}

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

.gate-link i {
  transition: transform .3s ease;
}

.gate-link:hover {
  color: var(--brand-dark);
}

.gate-link:hover i {
  transform: translateX(4px);
}

/* ===== Security Tips ===== */
.tips-wrap {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border-radius: 24px;
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.tips-wrap::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(225, 29, 72, .25), transparent 65%);
}

.tips-wrap .section-tag {
  background: rgba(255, 255, 255, .12);
  color: #fda4af;
}

.tips-wrap .section-head h2 {
  color: #fff;
}

.tips-wrap .section-head p {
  color: rgba(255, 255, 255, .7);
}

.tip-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 8px;
}

.tip-item {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 14px;
  padding: 16px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: var(--transition);
}

.tip-item:hover {
  background: rgba(255, 255, 255, .1);
  transform: translateX(4px);
}

.tip-item img {
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 10px;
  object-fit: cover;
}

.tip-item i {
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 10px;
  background: rgba(255, 255, 255, .1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 16px;
}

.tip-item span {
  color: rgba(255, 255, 255, .9);
  font-size: 14.5px;
  line-height: 1.6;
  font-weight: 500;
}

/* ===== FAQ ===== */
.faq-section {
  background: #fff;
}

.accordion {
  --bs-accordion-border-color: var(--line);
  --bs-accordion-border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.accordion-item {
  border: 1px solid var(--line);
  border-radius: var(--radius) !important;
  background: #fff;
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: rgba(225, 29, 72, .25);
  box-shadow: 0 6px 20px rgba(15, 23, 42, .05);
}

.accordion-button {
  background: #fff;
  color: var(--ink);
  font-weight: 600;
  font-size: 16px;
  padding: 20px 24px;
  gap: 12px;
  box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
  background: linear-gradient(135deg, rgba(225, 29, 72, .05), rgba(245, 158, 11, .04));
  color: var(--brand);
}

.accordion-button::after {
  background: none;
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: rgba(225, 29, 72, .1);
  color: var(--brand);
  transition: var(--transition);
  transform: none;
  margin-left: auto;
}

.accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
  background-color: var(--brand);
  color: #fff;
}

.accordion-body {
  padding: 6px 24px 22px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 70px 0;
}

.cta-inner {
  position: relative;
  border-radius: 24px;
  padding: 56px 40px;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
  text-align: center;
}

.cta-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, .65);
}

.cta-inner > * {
  position: relative;
  z-index: 2;
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-inner p {
  color: rgba(255, 255, 255, .8);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 28px;
}

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
  background: #0b1526;
  padding: 46px 30px 28px;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  padding-bottom: 26px;
  margin-bottom: 22px;
}

.footer-brand {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  white-space: nowrap;
}

.footer-top p {
  color: rgba(255, 255, 255, .5);
  font-size: 14px;
  margin: 0;
  max-width: 700px;
  line-height: 1.8;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  color: rgba(255, 255, 255, .35);
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .container {
    max-width: 100%;
  }

  .section {
    padding: 64px 0;
  }
}

@media (max-width: 992px) {
  .mobile-nav {
    display: flex;
  }

  .sidebar {
    display: none;
  }

  .site-shell {
    display: block;
  }

  .page-banner {
    padding: 64px 0 52px;
  }

  .tips-wrap {
    padding: 36px 24px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 54px 0;
  }

  .section-head {
    margin-bottom: 34px;
  }

  .tip-list {
    grid-template-columns: 1fr;
  }

  .cta-inner {
    padding: 40px 22px;
  }

  .site-footer {
    padding: 36px 20px 22px;
  }

  .footer-top {
    flex-direction: column;
    gap: 12px;
  }
}

@media (max-width: 576px) {
  .page-banner h1 {
    font-size: 28px;
  }

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

  .banner-meta {
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
  }

  .tips-wrap {
    padding: 28px 18px;
  }

  .cta-inner {
    padding: 32px 18px;
  }

  .cta-inner .btn {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: article */
:root {
  --primary: #16275a;
  --primary-2: #24479a;
  --primary-3: #3660c7;
  --accent: #d4a840;
  --accent-light: #f3d38a;
  --dark: #0d1735;
  --dark-2: #111f47;
  --bg-body: #f4f6fb;
  --bg-section: #eef1f8;
  --bg-white: #ffffff;
  --text-main: #1b2335;
  --text-muted: #657086;
  --text-light: #a2adc4;
  --border: #e2e8f2;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(13, 23, 53, 0.08);
  --shadow-md: 0 14px 44px rgba(13, 23, 53, 0.14);
  --transition: all 0.3s ease;
  --font-family: "PingFang SC", "Hiragino Sans GB", "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);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }

/* ===== 布局 ===== */
.site-layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 250px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--dark);
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 32px 18px 28px;
  gap: 28px;
  overflow-y: auto;
  z-index: 1040;
}
.sidebar-brand { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.brand-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--accent), #e8c567);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: var(--dark);
  box-shadow: 0 6px 18px rgba(212, 168, 64, 0.35);
}
.brand-name { font-size: 16px; font-weight: 700; letter-spacing: 0.5px; line-height: 1.4; color: #fff; }
.sidebar-nav { display: flex; flex-direction: column; gap: 6px; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.72);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-link i { width: 18px; text-align: center; font-size: 15px; }
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); transform: translateX(3px); }
.nav-link.active, .nav-link.active:hover {
  background: linear-gradient(135deg, var(--primary-2), var(--primary-3));
  color: #fff;
  box-shadow: 0 4px 16px rgba(36, 71, 154, 0.4);
  transform: translateX(0);
  border-color: rgba(255,255,255,0.12);
}
.sidebar-note {
  margin-top: auto;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.note-icon { color: var(--accent); font-size: 16px; flex-shrink: 0; margin-top: 2px; }
.sidebar-note p { font-size: 12px; color: rgba(255,255,255,0.55); line-height: 1.6; }

.content-wrapper { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.main-content { flex: 1; }

/* ===== 容器 ===== */
.custom-container {
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 36px;
}

/* ===== 通用板块间距 ===== */
.section-pad { padding: 72px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 44px; }
.section-eyebrow {
  display: inline-block;
  background: rgba(212, 168, 64, 0.14);
  color: #a8841f;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 40px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.section-head h2 { font-size: 34px; margin-bottom: 12px; color: var(--text-main); }
.section-head p { color: var(--text-muted); font-size: 16px; }

/* ===== 页首 banner ===== */
.page-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 84px 0 64px;
  color: #fff;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(13, 23, 53, 0.93), rgba(13, 23, 53, 0.72) 45%, rgba(22, 39, 90, 0.45));
  z-index: 1;
}
.page-hero .custom-container { position: relative; z-index: 2; }
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 22px;
  color: rgba(255,255,255,0.68);
  font-size: 13px;
}
.hero-breadcrumb a { color: rgba(255,255,255,0.85); }
.hero-breadcrumb a:hover { color: var(--accent-light); }
.hero-breadcrumb i { font-size: 10px; opacity: 0.55; }
.page-title { font-size: 38px; font-weight: 800; margin-bottom: 12px; max-width: 780px; }
.page-subtitle { font-size: 16px; color: rgba(255,255,255,0.78); max-width: 620px; margin-bottom: 22px; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.badge-tag {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 5px 14px;
  border-radius: 30px;
  font-size: 12px;
  color: rgba(255,255,255,0.9);
  backdrop-filter: blur(6px);
}

/* ===== 文章主体 ===== */
.article-section { background: var(--bg-white); }
.article-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 36px;
  box-shadow: var(--shadow);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding-bottom: 20px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); }
.meta-item i { color: var(--primary-2); font-size: 14px; }
.article-content h2 {
  font-size: 25px;
  font-weight: 700;
  margin: 34px 0 16px;
  color: var(--text-main);
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}
.article-content h3 { font-size: 20px; font-weight: 600; margin: 26px 0 12px; color: var(--text-main); }
.article-content p { font-size: 16px; line-height: 1.9; color: #3a4257; margin-bottom: 18px; }
.article-content img { max-width: 100%; border-radius: var(--radius-sm); margin: 18px 0; box-shadow: var(--shadow); }
.article-content ul, .article-content ol { margin: 14px 0 20px; padding-left: 26px; line-height: 1.9; color: #3a4257; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(212, 168, 64, 0.06);
  padding: 16px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 22px 0;
  font-style: italic;
  color: #5a5f6e;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}
.article-content table th, .article-content table td { padding: 11px 14px; border: 1px solid var(--border); }
.article-content table th { background: #f7f9fc; font-weight: 600; }
.article-footer-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}
.tag-item { background: var(--bg-section); color: var(--text-muted); padding: 4px 14px; border-radius: 30px; font-size: 12px; }
.tag-item:first-child { color: var(--primary-2); background: rgba(36, 71, 154, 0.08); }

/* ===== 未找到 ===== */
.not-found { text-align: center; padding: 48px 20px; }
.not-found-icon {
  width: 80px; height: 80px;
  background: rgba(36, 71, 154, 0.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 24px;
  font-size: 34px;
  color: var(--primary-2);
}
.not-found h2 { font-size: 28px; margin-bottom: 12px; }
.not-found p { color: var(--text-muted); margin-bottom: 26px; }

/* ===== 侧边栏 ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 24px; }
.sidebar-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}
.sidebar-card h3 i { color: var(--accent); }
.sidebar-card ul { display: flex; flex-direction: column; gap: 10px; }
.sidebar-card ul li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-muted);
  padding: 8px 12px;
  background: var(--bg-section);
  border-radius: 8px;
}
.sidebar-card ul li span { color: var(--text-main); font-weight: 500; }
.quick-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 10px;
  transition: var(--transition);
}
.quick-link i { color: var(--accent); font-size: 12px; }
.quick-link:last-child { margin-bottom: 0; }
.quick-link:hover { border-color: var(--primary-2); background: rgba(36, 71, 154, 0.04); transform: translateX(4px); color: var(--primary-2); }
.sidebar-note-card {
  background: linear-gradient(135deg, var(--dark), var(--dark-2));
  color: #fff;
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.sidebar-note-card i { font-size: 30px; color: var(--accent); margin-bottom: 12px; }
.sidebar-note-card p { font-size: 13px; color: rgba(255,255,255,0.72); line-height: 1.7; }

/* ===== 探索卡片 ===== */
.explore-section { background: var(--bg-section); }
.explore-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow);
}
.explore-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(36, 71, 154, 0.2); }
.explore-img { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
.explore-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.explore-card:hover .explore-img img { transform: scale(1.06); }
.explore-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(13, 23, 53, 0.45), transparent 60%); }
.explore-badge {
  position: absolute;
  left: 16px; bottom: 14px;
  background: var(--accent);
  color: var(--dark);
  padding: 4px 15px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  z-index: 2;
}
.explore-body { padding: 26px; }
.explore-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.explore-body p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; line-height: 1.7; }
.explore-link { font-size: 14px; font-weight: 600; color: var(--primary-2); display: inline-flex; align-items: center; gap: 6px; }
.explore-link i { transition: transform 0.3s ease; font-size: 12px; }
.explore-card:hover .explore-link i { transform: translateX(4px); }

/* ===== 步骤流程 ===== */
.steps-section { background: var(--bg-white); }
.step-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px 28px;
  position: relative;
  height: 100%;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
}
.step-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.step-number {
  position: absolute;
  top: 14px; right: 20px;
  font-size: 52px;
  font-weight: 800;
  color: rgba(22, 39, 90, 0.06);
  line-height: 1;
}
.step-icon {
  width: 58px; height: 58px;
  background: linear-gradient(135deg, var(--primary-2), var(--primary-3));
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 22px;
  margin-bottom: 20px;
  box-shadow: 0 6px 18px rgba(36, 71, 154, 0.28);
}
.step-card h3 { font-size: 19px; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-section); }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 26px;
  transition: var(--transition);
  box-shadow: 0 2px 10px rgba(13, 23, 53, 0.04);
}
.faq-item:hover { border-color: rgba(36, 71, 154, 0.25); box-shadow: var(--shadow); }
.faq-question {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.faq-question i { color: var(--accent); font-size: 15px; }
.faq-answer { font-size: 14px; color: var(--text-muted); line-height: 1.8; padding-left: 25px; }

/* ===== CTA ===== */
.cta-section { padding: 70px 0; background: var(--dark); position: relative; overflow: hidden; }
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  opacity: 0.28;
}
.cta-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13, 23, 53, 0.92), rgba(36, 71, 154, 0.75));
}
.cta-box { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-content { flex: 1; min-width: 260px; }
.cta-content h2 { font-size: 30px; color: #fff; margin-bottom: 10px; }
.cta-content p { font-size: 15px; color: rgba(255,255,255,0.72); max-width: 520px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-light-custom {
  background: #fff;
  color: var(--primary);
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 14px;
  border: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-light-custom:hover { background: var(--accent-light); color: var(--dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(255,255,255,0.18); }
.btn-outline-light-custom {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.6);
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline-light-custom:hover { background: rgba(255,255,255,0.14); border-color: #fff; color: #fff; transform: translateY(-2px); }

/* ===== 按钮主样式 ===== */
.btn-primary-custom {
  background: linear-gradient(135deg, var(--primary-2), var(--primary-3));
  color: #fff;
  border: none;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 6px 20px rgba(36, 71, 154, 0.28);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary-custom:hover { background: linear-gradient(135deg, var(--primary-3), var(--primary-2)); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(36, 71, 154, 0.4); }
.btn-primary-custom:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(36, 71, 154, 0.25); }
.btn-primary-custom:focus-visible, .btn-light-custom:focus-visible, .btn-outline-light-custom:focus-visible, .nav-link:focus-visible, a:focus-visible {
  outline: 3px solid rgba(212, 168, 64, 0.5);
  outline-offset: 3px;
}

/* ===== 页脚 ===== */
.site-footer { background: var(--dark-2); color: rgba(255,255,255,0.65); padding: 32px 0 24px; }
.footer-top { text-align: center; margin-bottom: 24px; padding: 0 36px; }
.footer-brand { font-size: 17px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.footer-top p { font-size: 13px; max-width: 600px; margin: 0 auto; line-height: 1.7; opacity: 0.72; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  display: flex;
  justify-content: center;
  gap: 26px;
  flex-wrap: wrap;
  font-size: 12px;
  opacity: 0.7;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .sidebar { width: 220px; padding: 26px 14px 22px; }
  .custom-container { padding: 0 28px; }
  .article-card { padding: 28px 24px; }
  .page-title { font-size: 32px; }
  .section-head h2 { font-size: 29px; }
}
@media (max-width: 768px) {
  .site-layout { flex-direction: column; }
  .sidebar {
    width: 100%;
    height: auto;
    position: sticky;
    top: 0;
    flex-direction: column;
    gap: 12px;
    padding: 14px 16px 10px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 6px 20px rgba(13, 23, 53, 0.25);
    z-index: 1050;
  }
  .sidebar-brand { flex-direction: row; justify-content: center; gap: 12px; padding-bottom: 8px; margin-bottom: 2px; border-bottom: none; }
  .brand-icon { width: 38px; height: 38px; font-size: 16px; border-radius: 10px; }
  .brand-name { font-size: 15px; }
  .sidebar-nav { flex-direction: row; justify-content: center; gap: 4px; overflow-x: auto; padding-bottom: 4px; }
  .nav-link { padding: 8px 14px; font-size: 13px; gap: 7px; white-space: nowrap; }
  .nav-link:hover { transform: none; }
  .sidebar-note { display: none; }
  .page-hero { padding: 56px 0 44px; }
  .page-title { font-size: 27px; }
  .custom-container { padding: 0 20px; }
  .section-pad { padding: 52px 0; }
  .article-card { padding: 22px 18px; }
  .article-sidebar { position: static; }
  .cta-box { flex-direction: column; text-align: center; justify-content: center; }
  .cta-content p { margin: 0 auto; }
}
@media (max-width: 520px) {
  .sidebar { padding: 10px 12px 8px; }
  .brand-name { font-size: 13px; }
  .nav-link { padding: 7px 10px; font-size: 12px; }
  .nav-link i { font-size: 13px; width: 16px; }
  .page-hero { padding: 44px 0 34px; }
  .page-title { font-size: 23px; }
  .hero-breadcrumb { font-size: 12px; }
  .section-head h2 { font-size: 24px; }
  .section-eyebrow { font-size: 12px; }
  .article-card { padding: 18px 14px; }
  .article-content p { font-size: 15px; }
  .article-content h2 { font-size: 21px; }
  .article-content h3 { font-size: 18px; }
  .article-meta { gap: 12px; flex-direction: column; }
  .explore-card { margin-bottom: 8px; }
  .step-card { padding: 26px 20px; }
  .faq-item { padding: 18px 16px; }
  .faq-question { font-size: 15px; }
  .faq-answer { padding-left: 0; }
  .cta-section { padding: 48px 0; }
  .cta-content h2 { font-size: 24px; }
  .btn-light-custom, .btn-outline-light-custom { padding: 10px 24px; font-size: 13px; }
  .footer-bottom { gap: 14px; font-size: 11px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0e7490;
            --primary-dark: #155e75;
            --primary-light: #22d3ee;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --body-bg: #f1f5f9;
            --surface: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(15, 23, 42, .06);
            --shadow-lg: 0 20px 48px rgba(15, 23, 42, .12);
            --transition: .25s ease;
            --sidebar-w: 280px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            z-index: 1050;
            width: var(--sidebar-w);
            background: linear-gradient(180deg, var(--dark) 0%, #111c32 70%, #0f172a 100%);
            display: flex;
            flex-direction: column;
            padding: 34px 22px 26px;
            border-right: 1px solid rgba(255, 255, 255, .06);
        }
        .sidebar-brand {
            margin-bottom: 38px;
            padding-bottom: 22px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .brand-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .brand-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border-radius: 12px;
            color: #fff;
            font-size: 20px;
            flex-shrink: 0;
            box-shadow: 0 6px 18px rgba(34, 211, 238, .35);
        }
        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .5px;
            line-height: 1.2;
        }
        .brand-sub {
            display: block;
            font-size: 12px;
            color: rgba(255, 255, 255, .55);
            margin-top: 2px;
            font-weight: 400;
            letter-spacing: .5px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 8px;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, .72);
            font-size: 15px;
            font-weight: 500;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            border: 1px solid transparent;
        }
        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: rgba(255, 255, 255, .55);
            transition: color var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, .06);
            color: #fff;
            transform: translateX(3px);
        }
        .nav-link:hover i {
            color: var(--primary-light);
        }
        .nav-link.active {
            background: linear-gradient(135deg, rgba(34, 211, 238, .18), rgba(14, 116, 144, .22));
            border-color: rgba(34, 211, 238, .25);
            color: #fff;
            box-shadow: 0 4px 18px rgba(14, 116, 144, .2);
        }
        .nav-link.active i {
            color: var(--primary-light);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, .78), rgba(14, 116, 144, .65)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            padding: 88px 0 84px;
            color: #fff;
            overflow: hidden;
        }
        .banner-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
            position: relative;
            z-index: 2;
        }
        .banner-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            backdrop-filter: blur(6px);
            border-radius: 40px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, .2);
            margin-bottom: 18px;
            color: rgba(255, 255, 255, .92);
        }
        .banner-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: .5px;
            margin-bottom: 16px;
            max-width: 700px;
        }
        .banner-title span {
            color: var(--accent-light);
        }
        .banner-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin-bottom: 30px;
            line-height: 1.8;
        }
        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 26px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-main {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            color: #1e293b;
            box-shadow: 0 8px 22px rgba(245, 158, 11, .35);
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(245, 158, 11, .45);
            color: #1e293b;
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .3);
            color: #fff;
            backdrop-filter: blur(6px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
            transform: translateY(-2px);
        }
        .banner-line {
            position: absolute;
            right: -80px;
            top: 50%;
            transform: translateY(-50%);
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(34, 211, 238, .25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* ===== 板块 ===== */
        .section-block {
            padding: 84px 32px;
        }
        .container-x {
            max-width: 1200px;
            margin: 0 auto;
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(14, 116, 144, .1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 40px;
            margin-bottom: 12px;
            letter-spacing: .5px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
        }

        /* ===== 攻略分类卡片 ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cat-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .cat-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.06);
        }
        .cat-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .cat-card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 16px;
        }
        .cat-card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .cat-card-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== 精选攻略 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 26px;
        }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .article-thumb {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .article-card:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, .78);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, .2);
        }
        .article-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-meta {
            display: flex;
            gap: 16px;
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 10px;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .article-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        .article-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: gap var(--transition);
        }
        .article-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== 流程步骤 ===== */
        .steps-section {
            background: var(--dark);
            padding: 84px 32px;
            position: relative;
            overflow: hidden;
        }
        .steps-section .section-title {
            color: #fff;
        }
        .steps-section .section-desc {
            color: rgba(255, 255, 255, .72);
        }
        .steps-section .section-tag {
            background: rgba(34, 211, 238, .12);
            color: var(--primary-light);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            position: relative;
            z-index: 2;
        }
        .step-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius);
            padding: 30px 24px;
            transition: background var(--transition), transform var(--transition), border-color var(--transition);
        }
        .step-card:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, .3);
        }
        .step-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary-light);
            background: rgba(34, 211, 238, .12);
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            margin-bottom: 18px;
            font-family: "Georgia", serif;
        }
        .step-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .step-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .68);
            line-height: 1.7;
        }
        .steps-glow {
            position: absolute;
            right: -100px;
            bottom: -100px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(34, 211, 238, .18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* ===== 要点提示 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }
        .tip-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px;
            display: flex;
            gap: 18px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .tip-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .tip-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            background: linear-gradient(135deg, rgba(14, 116, 144, .12), rgba(34, 211, 238, .1));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
        }
        .tip-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .tip-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 数据统计 ===== */
        .stats-wrap {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            box-shadow: 0 12px 40px rgba(14, 116, 144, .3);
        }
        .stat-item {
            text-align: center;
            padding: 12px;
        }
        .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            font-family: "Georgia", serif;
        }
        .stat-num span {
            font-size: 28px;
            margin-left: 2px;
            color: var(--accent-light);
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .78);
            margin-top: 6px;
            letter-spacing: .5px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            padding-top: 14px;
            margin-top: 0;
        }

        /* ===== CTA ===== */
        .cta-panel {
            padding: 0 32px 84px;
        }
        .cta-inner {
            background: linear-gradient(135deg, var(--dark), #0f2f3e 60%, var(--primary-dark));
            border-radius: var(--radius);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-inner::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(34, 211, 238, .25) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-title {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-desc {
            color: rgba(255, 255, 255, .74);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 26px;
            line-height: 1.75;
        }
        .cta-inner .btn-main {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            color: #1e293b;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            margin-top: auto;
            background: var(--dark);
            color: rgba(255, 255, 255, .75);
            padding: 44px 32px 28px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        .footer-top {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 24px;
            flex-wrap: wrap;
            padding-bottom: 26px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: .5px;
        }
        .footer-top p {
            max-width: 480px;
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, .6);
            margin: 0;
        }
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== 移动端适配 ===== */
        @media (max-width: 1199.98px) {
            :root {
                --sidebar-w: 240px;
            }
            .sidebar {
                padding: 26px 18px;
            }
            .brand-name {
                font-size: 16px;
            }
            .banner-title {
                font-size: 36px;
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: auto;
                width: 100%;
                height: auto;
                min-height: 0;
                flex-direction: row;
                align-items: center;
                gap: 14px;
                padding: 12px 16px;
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
                box-shadow: 0 4px 20px rgba(15, 23, 42, .3);
            }
            .sidebar-brand {
                margin: 0;
                padding: 0;
                border: none;
                flex-shrink: 0;
            }
            .brand-icon {
                width: 38px;
                height: 38px;
                font-size: 17px;
            }
            .brand-sub {
                display: none;
            }
            .sidebar-nav {
                flex-direction: row;
                gap: 4px;
                overflow-x: auto;
                flex: 1;
                margin: 0;
                scrollbar-width: none;
            }
            .sidebar-nav::-webkit-scrollbar {
                display: none;
            }
            .nav-link {
                padding: 9px 14px;
                font-size: 14px;
                white-space: nowrap;
                border-radius: 8px;
            }
            .nav-link:hover {
                transform: none;
            }
            .main-content {
                margin-left: 0;
                padding-top: 62px;
            }
            .page-banner {
                padding: 56px 0 52px;
            }
            .cat-grid {
                gap: 18px;
            }
            .article-grid {
                gap: 18px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 767.98px) {
            .page-banner {
                padding: 44px 0 42px;
            }
            .banner-title {
                font-size: 28px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .section-block {
                padding: 56px 18px;
            }
            .container-x {
                padding: 0;
            }
            .section-title {
                font-size: 24px;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .article-thumb {
                height: 200px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .stats-wrap {
                grid-template-columns: repeat(2, 1fr);
                padding: 36px 20px;
                gap: 20px;
            }
            .stat-num {
                font-size: 32px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cta-inner {
                padding: 40px 22px;
            }
            .cta-title {
                font-size: 22px;
            }
            .footer-top {
                flex-direction: column;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .banner-actions {
                flex-direction: column;
                align-items: center;
            }
            .banner-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .banner-title {
                font-size: 24px;
            }
            .banner-desc {
                font-size: 14px;
            }
            .brand-name {
                font-size: 15px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 13px;
                gap: 6px;
            }
            .nav-link i {
                font-size: 14px;
                width: 18px;
            }
            .stat-num {
                font-size: 28px;
            }
            .stat-label {
                font-size: 13px;
            }
            .article-body {
                padding: 18px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
        }