/* roulang page: index */
:root {
  --color-bg: #0F1115;
  --color-bg-soft: #171A21;
  --color-bg-card: #1C2028;
  --color-border: #2A2F3A;
  --color-text-primary: #F2F4F8;
  --color-text-secondary: #A0A6B2;
  --color-text-tertiary: #6B7280;
  --color-accent: #FF5A2A;
  --color-accent-hover: #FF7A45;
  --color-accent-soft: rgba(255,90,42,0.12);
  --color-success: #18A058;
  --color-warning: #F0A020;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.4);
  --glow-accent: 0 0 20px rgba(255,90,42,0.25);
  --container-width: 1200px;
  --header-height: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; }
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid transparent;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--glow-accent);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: transparent;
  color: var(--color-text-primary);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.3);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.06);
  color: #fff;
}
.btn-outline:active { background: rgba(255,255,255,0.12); }
.btn-lg { height: 48px; padding: 0 32px; font-size: 15px; }
.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: #fff;
  color: #0F1115;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background 0.2s ease, transform 0.2s ease;
}
.btn-white:hover { background: #f0f0f0; transform: translateY(-1px); }
.btn-outline-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: transparent;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.4);
  transition: background 0.2s ease, border-color 0.2s ease;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(15,17,21,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 16px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-family: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand-sub {
  font-size: 11px;
  color: var(--color-text-secondary);
  letter-spacing: 0.08em;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 auto;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  position: relative;
  transition: color 0.2s ease;
  font-weight: 500;
}
.nav-link:hover {
  color: var(--color-text-primary);
}
.nav-link.active {
  color: var(--color-accent);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 15px;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, background 0.2s ease;
}
.search-toggle:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-soft);
}
.search-expand {
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  overflow: hidden;
  opacity: 0;
  transition: width 0.3s ease, opacity 0.3s ease;
  margin-right: 8px;
}
.search-expand.open {
  width: 200px;
  opacity: 1;
}
.search-expand input {
  width: 100%;
  height: 38px;
  padding: 0 16px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.search-expand input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255,90,42,0.15);
}
.btn-login {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
  font-weight: 500;
}
.btn-login:hover { color: var(--color-text-primary); }
.btn-entry {
  height: 38px;
  padding: 0 22px;
  font-size: 13px;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  font-size: 20px;
  border-radius: var(--radius-sm);
}
.nav-toggle:hover { background: var(--color-bg-soft); }

/* ===== Mobile Drawer ===== */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1100;
}
.drawer-overlay.show { display: block; }
.mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: var(--color-bg-soft);
  z-index: 1200;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  flex-direction: column;
  padding: 24px;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer.show { display: flex; }
.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.drawer-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 18px;
  border-radius: var(--radius-sm);
}
.drawer-close:hover { color: #fff; background: var(--color-bg-card); }
.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.drawer-link {
  padding: 14px 12px;
  font-size: 16px;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}
.drawer-link:hover { background: var(--color-bg-card); color: var(--color-text-primary); padding-left: 16px; }
.drawer-link.active { color: var(--color-accent); font-weight: 600; background: var(--color-accent-soft); }
.drawer-footer {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.drawer-footer .btn-primary, .drawer-footer .btn-login {
  flex: 1;
  justify-content: center;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 80vh;
  min-height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--header-height);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-color: var(--color-bg);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15,17,21,0.92) 0%, rgba(15,17,21,0.75) 50%, rgba(15,17,21,0.4) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding-top: 40px;
  padding-bottom: 40px;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.hero h1 .highlight {
  color: var(--color-accent);
}
.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--color-border);
  margin-top: 48px;
  padding-top: 32px;
}
.stat-item {
  text-align: left;
  padding: 12px 16px;
  border-left: 1px solid var(--color-border);
}
.stat-item:first-child { border-left: none; }
.stat-num {
  font-family: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
  display: block;
  line-height: 1.2;
}
.stat-label {
  font-size: 12px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* ===== Section base ===== */
.section {
  padding: 96px 0;
  position: relative;
}
.section-eyebrow {
  font-family: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 12px;
}
.section h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.section-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* ===== Path timeline ===== */
.path-section {
  background: var(--color-bg-soft);
}
.path-layout {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: 60px;
  align-items: start;
}
.section-index {
  font-family: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
  font-size: 64px;
  font-weight: 700;
  color: rgba(255,255,255,0.08);
  line-height: 1;
  display: block;
  margin-bottom: 16px;
}
.timeline {
  position: relative;
  padding-left: 24px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--color-border);
  transition: background 0.3s ease;
}
.timeline-item {
  position: relative;
  padding: 8px 0 32px 24px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -24px;
  top: 16px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px rgba(255,90,42,0.5);
}
.timeline-step {
  font-family: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  display: inline-block;
  margin-bottom: 6px;
}
.timeline-content h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}
.timeline-content p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 480px;
}
.timeline-item:hover .timeline-content h3 {
  color: var(--color-accent-hover);
}
.timeline:hover::before {
  background: var(--color-accent);
}

/* ===== Highlights ===== */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.highlight-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.highlight-card:hover {
  border-color: rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.02);
}
.highlight-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  font-size: 17px;
  margin-bottom: 20px;
  transition: background 0.2s ease, color 0.2s ease;
}
.highlight-card:hover .highlight-icon {
  background: var(--color-accent);
  color: #fff;
}
.highlight-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}
.highlight-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== Compare ===== */
.compare-section { background: var(--color-bg-soft); }
.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
  align-items: stretch;
}
.compare-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.compare-card.recommended {
  border-color: var(--color-accent);
  box-shadow: 0 0 24px rgba(255,90,42,0.1);
}
.compare-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.compare-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}
.compare-desc {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-bottom: 24px;
}
.compare-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}
.compare-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.compare-feature i {
  margin-top: 3px;
  font-size: 13px;
  color: var(--color-success);
}
.compare-feature i.fa-minus {
  color: var(--color-text-tertiary);
}
.compare-btn {
  width: 100%;
}

/* ===== CTA banner ===== */
.cta-section { padding-top: 0; padding-bottom: 96px; }
.cta-banner {
  position: relative;
  background: linear-gradient(135deg, #E64A1F 0%, #FF7A45 100%);
  border-radius: var(--radius-lg);
  padding: 56px 64px;
  text-align: center;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}
.cta-banner h2 {
  position: relative;
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.cta-banner p {
  position: relative;
  font-size: 16px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 32px;
  line-height: 1.6;
}
.cta-actions {
  position: relative;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== News ===== */
.news-section { background: var(--color-bg); }
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
}
.section-header h2 { margin-bottom: 0; }
.view-all {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.2s ease;
}
.view-all:hover { gap: 12px; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.news-card:hover {
  border-color: rgba(255,255,255,0.15);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.news-card-cover {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-soft);
}
.news-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-card-cover img { transform: scale(1.03); }
.news-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 20px 16px;
}
.news-tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 500;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}
.news-card h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
}
.news-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-clamp: 3;
  overflow: hidden;
  flex: 1;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  font-size: 12px;
  color: var(--color-text-tertiary);
}
.news-meta .detail-link {
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}
.news-meta .detail-link:hover { gap: 8px; }
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.news-empty i {
  font-size: 40px;
  color: var(--color-text-tertiary);
  margin-bottom: 16px;
}
.news-empty p {
  color: var(--color-text-secondary);
  font-size: 16px;
}
.news-empty span {
  display: block;
  color: var(--color-text-tertiary);
  font-size: 14px;
  margin-top: 8px;
}

/* ===== FAQ ===== */
.faq-section { background: var(--color-bg-soft); }
.faq-layout {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: 60px;
  align-items: start;
}
.faq-list {
  width: 100%;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
}
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-primary);
  transition: color 0.2s ease;
  text-align: left;
}
.faq-question:hover { color: var(--color-accent); }
.faq-item.active .faq-question { color: var(--color-accent); }
.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--color-accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 0 20px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  padding-right: 40px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
.footer-brand .brand-name {
  font-size: 20px;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 320px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links > span {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}
.footer-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}
.footer-links a:hover { color: var(--color-accent); }
.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-tertiary);
  text-align: right;
}
.footer-meta span { display: block; }
.footer-bottom {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-border);
  margin-top: 32px;
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-tertiary);
}

/* ===== Responsive ===== */
@media (max-width: 1279px) {
  .container { width: 92%; padding: 0 16px; }
  .hero h1 { font-size: clamp(38px, 5vw, 54px); }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .compare-card { padding: 24px 20px; }
  .timeline-layout { gap: 32px; }
}

@media (max-width: 1023px) {
  .site-nav { display: none; }
  .header-actions .btn-login { display: none; }
  .nav-toggle { display: flex; }
  .search-expand { display: none; }
  .path-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .path-left { max-width: 100%; }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-grid { grid-template-columns: 1fr; }
  .compare-card { max-width: 100%; }
  .compare-card.recommended { order: -1; }
  .cta-banner { padding: 40px 32px; }
  .cta-banner h2 { font-size: 28px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-meta { text-align: left; }
}

@media (max-width: 767px) {
  .container { width: 100%; padding: 0 20px; }
  .hero { min-height: 60vh; padding-top: 72px; }
  .hero h1 { font-size: 32px; line-height: 1.2; }
  .hero-subtitle { font-size: 16px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn-primary, .hero-cta .btn-outline { width: 100%; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px 0; }
  .stat-item { padding: 8px 12px; }
  .stat-item:nth-child(3) { border-left: none; }
  .section { padding: 56px 0; }
  .section h2 { font-size: 24px; }
  .highlight-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 24px; }
  .timeline-item { padding-left: 20px; }
  .timeline-dot { left: -24px; }
  .cta-section { padding-bottom: 56px; }
  .cta-banner { padding: 32px 20px; }
  .cta-banner h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn-white, .cta-actions .btn-outline-light { width: 100%; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .faq-answer p { padding-right: 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-meta { text-align: left; }
  .brand-sub { display: none; }
  .brand-name { font-size: 16px; }
  .btn-entry { display: none; }
  .header-inner { justify-content: space-between; }
  .header-actions { gap: 8px; }
}

/* roulang page: category1 */
:root {
  --color-bg: #0F1115;
  --color-bg-soft: #171A21;
  --color-bg-card: #1C2028;
  --color-border: #2A2F3A;
  --color-text-primary: #F2F4F8;
  --color-text-secondary: #A0A6B2;
  --color-text-tertiary: #6B7280;
  --color-accent: #FF5A2A;
  --color-accent-hover: #FF7A45;
  --color-accent-soft: rgba(255,90,42,0.12);
  --color-success: #18A058;
  --color-warning: #F0A020;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.4);
  --glow-accent: 0 0 20px rgba(255,90,42,0.25);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { position: relative; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 72px; background: rgba(15,17,21,0.92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner { display: flex; align-items: center; height: 72px; gap: 32px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  background: var(--color-accent); color: #fff; border-radius: var(--radius-sm);
  font-size: 14px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-family: var(--font-num); font-weight: 700; font-size: 18px; letter-spacing: 0.02em; }
.brand-sub { font-size: 12px; color: var(--color-text-secondary); font-weight: 400; }
.site-nav { display: flex; align-items: center; gap: 28px; margin-left: 16px; }
.nav-link {
  position: relative; font-size: 15px; font-weight: 500; color: var(--color-text-secondary);
  padding: 24px 0; transition: color 0.2s ease;
}
.nav-link:hover { color: var(--color-text-primary); }
.nav-link.active { color: var(--color-accent); }
.nav-link.active::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--color-accent); border-radius: 2px 2px 0 0;
}
.header-actions { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.search-wrap { position: relative; }
.search-toggle { font-size: 16px; color: var(--color-text-secondary); padding: 8px; transition: color 0.2s; }
.search-toggle:hover { color: var(--color-text-primary); }
.search-expand {
  position: absolute; right: 0; top: 100%; width: 0; opacity: 0; overflow: hidden;
  transition: all 0.3s ease; background: var(--color-bg-soft);
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
}
.search-wrap:hover .search-expand, .search-wrap:focus-within .search-expand {
  width: 260px; opacity: 1; padding: 4px 6px;
}
.search-expand input {
  width: 100%; height: 36px; background: transparent; border: none; outline: none;
  color: var(--color-text-primary); padding: 0 14px; font-size: 14px;
}
.search-expand input:focus { border-color: var(--color-accent); }
.btn-login {
  font-size: 14px; color: var(--color-text-primary); font-weight: 500;
  padding: 8px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  transition: all 0.2s ease;
}
.btn-login:hover { border-color: var(--color-text-secondary); }
.btn-primary {
  font-size: 14px; font-weight: 600; color: #fff; background: var(--color-accent);
  padding: 10px 24px; border-radius: var(--radius-md); transition: all 0.2s ease;
  box-shadow: 0 0 0 rgba(255,90,42,0);
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: var(--glow-accent); }
.btn-entry { padding: 10px 22px; }
.nav-toggle { display: none; font-size: 20px; color: var(--color-text-primary); }

/* Page Hero / Compact Banner */
.page-hero {
  padding: 140px 0 60px; background: var(--color-bg);
  background-image: linear-gradient(rgba(15,17,21,0.88), rgba(15,17,21,0.96)), url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center;
  border-bottom: 1px solid var(--color-border);
}
.page-hero-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; min-height: 180px; }
.page-hero h1 { font-size: 34px; font-weight: 800; line-height: 1.2; letter-spacing: -0.01em; margin-bottom: 12px; }
.page-hero h1 .highlight { color: var(--color-accent); }
.page-hero .hero-desc { font-size: 15px; color: var(--color-text-secondary); max-width: 560px; line-height: 1.7; }
.page-hero .hero-meta { display: flex; gap: 24px; align-items: center; flex-shrink: 0; padding-bottom: 6px; }
.hero-meta .meta-item { text-align: center; }
.hero-meta .meta-num { font-family: var(--font-num); font-size: 28px; font-weight: 700; color: var(--color-text-primary); }
.hero-meta .meta-num em { color: var(--color-accent); font-style: normal; }
.hero-meta .meta-label { font-size: 12px; color: var(--color-text-tertiary); margin-top: 2px; }

/* Section common */
.section-pad { padding: 72px 0; }
.section-head { margin-bottom: 44px; }
.section-kicker {
  font-family: var(--font-num); font-size: 13px; letter-spacing: 0.2em;
  color: var(--color-accent); text-transform: uppercase; font-weight: 600; display: block; margin-bottom: 10px;
}
.section-title { font-size: 30px; font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
.section-sub { font-size: 15px; color: var(--color-text-secondary); margin-top: 12px; max-width: 640px; line-height: 1.7; }

/* Two-column layout */
.split-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: start; }
.split-grid.reverse { grid-template-columns: 7fr 5fr; }
.lead-panel { padding: 28px; background: var(--color-bg-soft); border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
.lead-panel h3 { font-size: 20px; font-weight: 600; margin-bottom: 14px; }
.lead-panel p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.8; }
.lead-panel .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag-pill {
  font-size: 12px; color: var(--color-accent); background: var(--color-accent-soft);
  padding: 3px 12px; border-radius: var(--radius-full); font-weight: 500;
}
.content-panel h4 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.content-panel p { font-size: 15px; color: var(--color-text-secondary); line-height: 1.8; }
.content-panel ul { margin-top: 16px; }
.content-panel ul li {
  position: relative; padding: 8px 0 8px 24px; font-size: 15px; color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border); line-height: 1.6;
}
.content-panel ul li::before {
  content: ""; position: absolute; left: 0; top: 16px; width: 8px; height: 8px;
  background: var(--color-accent); border-radius: 2px;
}
.content-panel ul li:first-child { border-top: 1px solid var(--color-border); }

/* Feature cards - 4 col */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px 24px; transition: all 0.2s ease;
}
.feature-card:hover { border-color: #3A4150; background: var(--color-bg-soft); }
.feature-card .icon-wrap {
  width: 42px; height: 42px; border-radius: var(--radius-md); display: flex; align-items: center;
  justify-content: center; background: var(--color-accent-soft); color: var(--color-accent);
  font-size: 18px; margin-bottom: 18px; transition: background 0.2s, color 0.2s;
}
.feature-card:hover .icon-wrap { background: var(--color-accent); color: #fff; }
.feature-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* Process timeline */
.timeline-wrap { display: grid; grid-template-columns: 4fr 8fr; gap: 56px; }
.timeline-left .section-title { margin-bottom: 16px; }
.timeline-left .section-sub { margin-top: 0; }
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 4px; top: 8px; bottom: 8px; width: 1px;
  background: var(--color-border); transition: background 0.3s;
}
.timeline:hover::before { background: rgba(255,90,42,0.4); }
.timeline-item { position: relative; padding-bottom: 36px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -27px; top: 6px; width: 7px; height: 7px;
  background: var(--color-accent); border-radius: 50%; box-shadow: 0 0 10px var(--color-accent);
}
.timeline-item h4 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.timeline-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }
.timeline-item .badge {
  display: inline-block; font-size: 12px; color: var(--color-accent);
  background: var(--color-accent-soft); padding: 2px 10px; border-radius: var(--radius-full);
  margin-top: 8px; font-weight: 500;
}

/* Scenario cards */
.scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.scenario-card {
  display: flex; gap: 18px; background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px; transition: border-color 0.2s, box-shadow 0.2s;
}
.scenario-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-card); }
.scenario-num {
  font-family: var(--font-num); font-size: 28px; font-weight: 700; color: var(--color-accent);
  line-height: 1; flex-shrink: 0; opacity: 0.85;
}
.scenario-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.scenario-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* Data stats band */
.stats-band { background: var(--color-bg-soft); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); padding: 48px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item { text-align: center; padding: 0 24px; position: relative; }
.stat-item + .stat-item::before {
  content: ""; position: absolute; left: 0; top: 20%; bottom: 20%; width: 1px; background: var(--color-border);
}
.stat-num { font-family: var(--font-num); font-size: 36px; font-weight: 700; line-height: 1.1; }
.stat-num em { color: var(--color-accent); font-style: normal; }
.stat-label { font-size: 13px; color: var(--color-text-secondary); margin-top: 8px; }

/* FAQ */
.faq-wrap { display: grid; grid-template-columns: 4fr 8fr; gap: 56px; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item:first-child { border-top: 1px solid var(--color-border); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 0; font-size: 16px; font-weight: 500; color: var(--color-text-primary);
  transition: color 0.2s; cursor: pointer; text-align: left; width: 100%;
}
.faq-q:hover { color: var(--color-accent); }
.faq-q .icon { flex-shrink: 0; font-size: 16px; color: var(--color-accent); transition: transform 0.3s ease; }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-item.open .faq-q { color: var(--color-accent); }
.faq-a { display: none; padding: 0 32px 20px 0; font-size: 14px; color: var(--color-text-secondary); line-height: 1.8; }
.faq-item.open .faq-a { display: block; }

/* CTA small */
.cta-strip {
  background: var(--color-bg-soft); border-radius: var(--radius-lg);
  padding: 40px 48px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  border: 1px solid var(--color-border); margin-top: 56px;
}
.cta-strip h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.cta-strip p { font-size: 14px; color: var(--color-text-secondary); }
.btn-cta {
  display: inline-flex; align-items: center; gap: 8px; background: var(--color-accent); color: #fff;
  font-size: 15px; font-weight: 600; padding: 12px 28px; border-radius: var(--radius-md);
  transition: all 0.2s; white-space: nowrap; box-shadow: 0 0 0 rgba(255,90,42,0);
}
.btn-cta:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: var(--glow-accent); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px; border: 1px solid rgba(255,255,255,0.3); color: #fff;
  font-size: 15px; font-weight: 600; padding: 12px 28px; border-radius: var(--radius-md);
  transition: all 0.2s; white-space: nowrap;
}
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,0.05); }

/* Sub page nav */
.sub-nav-panel { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 28px; margin-top: 72px; }
.sub-nav-panel h3 { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.sub-nav-links { display: flex; gap: 16px; flex-wrap: wrap; }
.sub-nav-links a {
  font-size: 14px; color: var(--color-text-secondary); padding: 8px 20px;
  border: 1px solid var(--color-border); border-radius: var(--radius-full); transition: all 0.2s;
}
.sub-nav-links a:hover { color: var(--color-accent); border-color: var(--color-accent); background: var(--color-accent-soft); }

/* Footer */
.site-footer { background: var(--color-bg-soft); border-top: 1px solid var(--color-border); padding: 56px 0 24px; margin-top: 72px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--color-border); }
.footer-brand .brand-name { font-family: var(--font-num); font-size: 20px; font-weight: 700; display: block; margin-bottom: 10px; }
.footer-brand p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; max-width: 320px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links > span { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.footer-links a { font-size: 14px; color: var(--color-text-secondary); transition: color 0.2s; }
.footer-links a:hover { color: var(--color-accent); }
.footer-meta { display: flex; flex-direction: column; gap: 8px; font-size: 13px; color: var(--color-text-tertiary); }
.footer-bottom { padding-top: 24px; text-align: center; font-size: 13px; color: var(--color-text-tertiary); }

/* Responsive */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .stat-item:nth-child(3)::before { display: none; }
  .timeline-wrap, .faq-wrap { grid-template-columns: 1fr; gap: 32px; }
  .split-grid, .split-grid.reverse { grid-template-columns: 1fr; gap: 32px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .site-nav { display: none; }
  .nav-toggle { display: block; }
  .header-actions .search-wrap { display: none; }
  .header-actions .btn-login { display: none; }
  .header-actions { gap: 10px; }
  .page-hero { padding: 120px 0 40px; }
  .page-hero-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .page-hero h1 { font-size: 28px; }
  .hero-meta { gap: 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 28px; }
  .cta-strip { flex-direction: column; align-items: flex-start; padding: 28px; }
  .section-title { font-size: 24px; }
  .section-pad { padding: 56px 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand p { max-width: 100%; }
}
@media (max-width: 520px) {
  .page-hero h1 { font-size: 24px; }
  .hero-meta .meta-num { font-size: 22px; }
  .hero-meta { gap: 16px; }
  .stat-num { font-size: 24px; }
  .stats-grid { gap: 16px 0; }
  .btn-cta, .btn-ghost { width: 100%; justify-content: center; }
}

/* roulang page: article */
:root {
  --color-bg: #0F1115;
  --color-bg-soft: #171A21;
  --color-bg-card: #1C2028;
  --color-border: #2A2F3A;
  --color-text-primary: #F2F4F8;
  --color-text-secondary: #A0A6B2;
  --color-text-tertiary: #6B7280;
  --color-accent: #FF5A2A;
  --color-accent-hover: #FF7A45;
  --color-accent-soft: rgba(255,90,42,0.12);
  --color-success: #18A058;
  --color-warning: #F0A020;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.4);
  --glow-accent: 0 0 20px rgba(255,90,42,0.25);
  --container: 1200px;
  --header-h: 72px;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif; background: var(--color-bg); color: var(--color-text-primary); line-height: 1.7; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { background: none; border: none; cursor: pointer; font: inherit; color: inherit; }
input { font: inherit; }
ul, ol { list-style: none; }
::selection { background: var(--color-accent); color: #fff; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--header-h); background: rgba(15,17,21,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-border); }
.header-inner { display: flex; align-items: center; height: 100%; gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: var(--color-accent); border-radius: 8px; color: #fff; font-size: 15px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-family: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif; font-weight: 700; font-size: 18px; letter-spacing: 0.02em; }
.brand-sub { font-size: 11px; color: var(--color-text-secondary); letter-spacing: 0.14em; }
.site-nav { display: flex; gap: 28px; margin-left: auto; }
.nav-link { position: relative; font-size: 14px; font-weight: 500; color: var(--color-text-secondary); padding: 8px 2px; transition: color .2s; white-space: nowrap; }
.nav-link:hover { color: var(--color-text-primary); }
.nav-link.active { color: var(--color-accent); }
.nav-link.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--color-accent); border-radius: 2px; }
.header-actions { display: flex; align-items: center; gap: 12px; margin-left: 8px; }
.search-wrap { position: relative; }
.search-toggle { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; color: var(--color-text-secondary); border: 1px solid var(--color-border); border-radius: var(--radius-full); transition: all .2s; }
.search-toggle:hover { border-color: var(--color-accent); color: var(--color-accent); }
.search-expand { position: absolute; right: 0; top: calc(100% + 10px); width: 280px; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .2s; z-index: 50; }
.search-wrap:hover .search-expand, .search-expand:hover { opacity: 1; visibility: visible; transform: none; }
.search-expand input { width: 100%; height: 36px; background: var(--color-bg-soft); border: 1px solid var(--color-border); border-radius: var(--radius-full); padding: 0 14px; color: var(--color-text-primary); outline: none; transition: border .2s; }
.search-expand input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(255,90,42,0.15); }
.btn-login { display: inline-flex; align-items: center; justify-content: center; font-size: 14px; color: var(--color-text-primary); padding: 8px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-md); transition: all .2s; }
.btn-login:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 20px; background: var(--color-accent); color: #fff; font-size: 14px; font-weight: 600; border-radius: var(--radius-md); transition: all .2s; }
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: var(--glow-accent); }
.nav-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; color: var(--color-text-primary); border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-left: auto; }

.mobile-drawer { display: none; }
.mobile-drawer.open { pointer-events: auto; }
.mobile-drawer.open .drawer-backdrop { opacity: 1; }
.mobile-drawer.open .drawer-panel { transform: none; }

.article-page { padding-top: var(--header-h); }
.breadcrumb { padding-top: 28px; padding-bottom: 4px; font-size: 13px; color: var(--color-text-tertiary); overflow-x: auto; white-space: nowrap; }
.breadcrumb a { color: var(--color-text-secondary); transition: color .2s; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .sep { margin: 0 8px; color: var(--color-text-tertiary); }
.breadcrumb .current { color: var(--color-text-primary); }

.article-section { padding: 32px 0 24px; }
.article-wrap { max-width: 760px; margin: 0 auto; }
.article-tag { display: inline-flex; align-items: center; background: var(--color-accent-soft); color: var(--color-accent); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: var(--radius-full); }
.article-title { font-size: clamp(28px, 4vw, 40px); font-weight: 800; line-height: 1.25; margin: 16px 0 14px; color: var(--color-text-primary); letter-spacing: -0.01em; }
.article-meta { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--color-text-tertiary); flex-wrap: wrap; }
.article-meta .dot::before { content: "·"; margin: 0 4px; color: var(--color-border); }
.article-cover { margin: 28px 0 36px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-border); }
.article-cover img { width: 100%; height: auto; }

.article-content { font-size: 16px; line-height: 1.9; color: var(--color-text-primary); word-break: break-word; }
.article-content h2 { font-size: 24px; font-weight: 700; color: #fff; margin: 36px 0 16px; padding-top: 8px; }
.article-content h3 { font-size: 19px; font-weight: 600; color: #fff; margin: 28px 0 14px; }
.article-content p { margin-bottom: 20px; }
.article-content a { color: var(--color-text-primary); text-decoration: underline; text-underline-offset: 3px; transition: color .2s; }
.article-content a:hover { color: var(--color-accent); }
.article-content blockquote { border-left: 3px solid var(--color-accent); background: var(--color-bg-card); padding: 16px 20px; margin: 24px 0; border-radius: 0 var(--radius-md) var(--radius-md) 0; color: var(--color-text-secondary); }
.article-content ul, .article-content ol { margin: 0 0 20px 20px; }
.article-content li { margin-bottom: 8px; list-style: disc; }
.article-content ol li { list-style: decimal; }
.article-content code { background: #0B0D11; padding: 3px 8px; border-radius: var(--radius-sm); font-size: 14px; font-family: "SFMono-Regular", Consolas, monospace; }
.article-content pre { background: #0B0D11; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 16px 20px; overflow-x: auto; margin: 24px 0; }
.article-content pre code { padding: 0; background: none; }
.article-content img { border-radius: var(--radius-md); margin: 24px auto; max-width: 100%; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; background: var(--color-bg-card); border: 1px solid var(--color-border); }
.article-content th, .article-content td { padding: 12px 16px; border: 1px solid var(--color-border); text-align: left; font-size: 14px; }
.article-content th { background: var(--color-bg-soft); color: var(--color-text-primary); font-weight: 600; }
.article-content td { color: var(--color-text-secondary); }

.article-empty { text-align: center; padding: 80px 20px; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); margin-top: 24px; }
.article-empty .empty-icon { font-size: 40px; color: var(--color-text-tertiary); margin-bottom: 16px; }
.article-empty p { color: var(--color-text-secondary); font-size: 16px; margin-bottom: 24px; }

.article-tags-section { padding: 24px 0 8px; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; padding: 20px 0; border-top: 1px solid var(--color-border); max-width: 760px; margin: 0 auto; }
.tag { background: var(--color-accent-soft); color: var(--color-accent); font-size: 12px; padding: 4px 12px; border-radius: var(--radius-full); transition: all .2s; }
.tag:hover { background: rgba(255,90,42,0.22); }

.article-pager-section { padding: 16px 0 48px; }
.article-pager { display: flex; gap: 16px; max-width: 760px; margin: 0 auto; }
.pager-item { flex: 1; background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 20px 22px; display: flex; flex-direction: column; gap: 6px; transition: all .2s; }
.pager-item:hover { border-color: var(--color-accent); background: var(--color-bg-soft); }
.pager-label { font-size: 12px; color: var(--color-text-tertiary); }
.pager-title { font-size: 15px; color: var(--color-text-primary); font-weight: 600; line-height: 1.5; }
.pager-item:hover .pager-title { color: var(--color-accent); }

.related-section { border-top: 1px solid var(--color-border); padding: 48px 0 56px; background: var(--color-bg-soft); }
.related-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 28px; }
.related-title { font-size: 26px; font-weight: 700; color: var(--color-text-primary); }
.related-more { font-size: 14px; color: var(--color-text-secondary); transition: color .2s; }
.related-more:hover { color: var(--color-accent); }
.related-more i { font-size: 12px; margin-left: 4px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: all .25s; }
.related-card:hover { border-color: var(--color-accent); transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.related-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.related-body { padding: 16px 20px 20px; }
.related-body h3 { font-size: 16px; font-weight: 600; line-height: 1.5; color: var(--color-text-primary); margin-bottom: 8px; transition: color .2s; }
.related-card:hover .related-body h3 { color: var(--color-accent); }
.related-time { font-size: 12px; color: var(--color-text-tertiary); }

.article-cta { padding: 56px 0 64px; }
.article-cta-inner { position: relative; background-size: cover; background-position: center; border-radius: var(--radius-lg); padding: 56px 40px; text-align: center; overflow: hidden; border: 1px solid var(--color-border); }
.article-cta-inner::before { content: ""; position: absolute; inset: 0; background: rgba(15,17,21,0.86); }
.article-cta-inner > * { position: relative; z-index: 1; }
.article-cta-inner h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.article-cta-inner p { font-size: 16px; color: var(--color-text-secondary); margin-bottom: 28px; }
.article-cta-inner .btn-primary { height: 48px; padding: 0 32px; font-size: 15px; }

.site-footer { background: var(--color-bg-soft); border-top: 1px solid var(--color-border); padding: 56px 0 32px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-brand .brand-name { font-family: "DIN Alternate", "Barlow Condensed", sans-serif; font-size: 20px; font-weight: 700; color: var(--color-text-primary); }
.footer-brand p { color: var(--color-text-secondary); font-size: 14px; margin-top: 12px; max-width: 320px; line-height: 1.7; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links > span { font-size: 14px; font-weight: 600; color: var(--color-text-primary); margin-bottom: 4px; }
.footer-links a { font-size: 14px; color: var(--color-text-secondary); transition: color .2s; }
.footer-links a:hover { color: var(--color-accent); }
.footer-meta { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--color-text-tertiary); }
.footer-bottom { grid-column: 1 / -1; border-top: 1px solid var(--color-border); padding-top: 24px; margin-top: 12px; text-align: center; font-size: 13px; color: var(--color-text-tertiary); }

@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .site-nav { display: none; }
  .header-actions .search-wrap, .header-actions .btn-login { display: none; }
  .header-actions .btn-entry { display: none; }
  .nav-toggle { display: flex; }
  .mobile-drawer { display: block; position: fixed; inset: 0; z-index: 200; pointer-events: none; }
  .drawer-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.6); opacity: 0; transition: opacity .25s; }
  .drawer-panel { position: absolute; right: 0; top: 0; bottom: 0; width: 300px; max-width: 85vw; background: var(--color-bg-soft); padding: 28px 24px; display: flex; flex-direction: column; transform: translateX(100%); transition: transform .3s ease; border-left: 1px solid var(--color-border); }
  .drawer-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
  .drawer-header span { font-size: 16px; font-weight: 600; color: var(--color-text-primary); }
  .drawer-close { font-size: 24px; color: var(--color-text-secondary); width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); border-radius: var(--radius-md); transition: all .2s; }
  .drawer-close:hover { color: var(--color-accent); border-color: var(--color-accent); }
  .drawer-nav { display: flex; flex-direction: column; gap: 16px; }
  .drawer-nav a { font-size: 16px; padding: 10px 0; border-bottom: 1px solid var(--color-border); color: var(--color-text-primary); transition: color .2s; }
  .drawer-nav a:hover, .drawer-nav a.active { color: var(--color-accent); }
  .drawer-actions { display: flex; flex-direction: column; gap: 12px; margin-top: auto; }
  .drawer-actions .btn-login, .drawer-actions .btn-primary { display: flex; justify-content: center; height: 44px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .container { padding: 0 20px; }
  .brand-name { font-size: 16px; }
  .brand-sub { font-size: 10px; }
  .article-section { padding: 20px 0 16px; }
  .article-title { font-size: 28px; margin-top: 14px; }
  .article-meta { font-size: 13px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 22px; }
  .article-cta-inner { padding: 40px 24px; }
  .article-cta-inner h2 { font-size: 26px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .related-grid { grid-template-columns: 1fr; }
  .article-pager { flex-direction: column; }
  .article-cta-inner h2 { font-size: 22px; }
  .article-cta-inner p { font-size: 14px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { text-align: left; padding-top: 20px; }
}
@media (max-width: 360px) {
  .brand-text .brand-sub { display: none; }
  .header-inner { gap: 16px; }
  .btn-entry { padding: 0 14px; }
}

/* roulang page: category2 */
:root {
      --color-bg: #0F1115;
      --color-bg-soft: #171A21;
      --color-bg-card: #1C2028;
      --color-border: #2A2F3A;
      --color-text-primary: #F2F4F8;
      --color-text-secondary: #A0A6B2;
      --color-text-tertiary: #6B7280;
      --color-accent: #FF5A2A;
      --color-accent-hover: #FF7A45;
      --color-accent-soft: rgba(255, 90, 42, 0.12);
      --color-success: #18A058;
      --color-warning: #F0A020;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 16px;
      --radius-full: 999px;
      --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.25);
      --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.4);
      --glow-accent: 0 0 20px rgba(255, 90, 42, 0.25);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-num: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
      --header-height: 72px;
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--color-bg);
      color: var(--color-text-primary);
      line-height: 1.7;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a {
      color: var(--color-text-primary);
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    input {
      font-family: inherit;
      border: none;
      outline: none;
    }

    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
    }

    section {
      scroll-margin-top: calc(var(--header-height) + 20px);
    }

    /* ===== 导航 ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      height: var(--header-height);
      background: rgba(15, 17, 21, 0.92);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-border);
    }

    .header-inner {
      height: 100%;
      display: flex;
      align-items: center;
      gap: 32px;
    }

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

    .brand-mark {
      width: 32px;
      height: 32px;
      border-radius: var(--radius-sm);
      background: var(--color-accent);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      box-shadow: var(--glow-accent);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-name {
      font-family: var(--font-num);
      font-weight: 700;
      font-size: 20px;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      color: var(--color-text-primary);
    }

    .brand-sub {
      font-size: 11px;
      font-weight: 400;
      color: var(--color-text-secondary);
      letter-spacing: 0.08em;
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-left: auto;
    }

    .nav-link {
      position: relative;
      padding: 10px 16px;
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-secondary);
      border-radius: var(--radius-sm);
      transition: color 0.2s ease;
      white-space: nowrap;
    }

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

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

    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 2px;
      left: 16px;
      right: 16px;
      height: 2px;
      border-radius: var(--radius-full);
      background: var(--color-accent);
    }

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

    .search-wrap {
      position: relative;
    }

    .search-toggle {
      width: 36px;
      height: 36px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-text-secondary);
      font-size: 15px;
      transition: all 0.2s ease;
    }

    .search-toggle:hover {
      color: var(--color-text-primary);
      background: var(--color-bg-soft);
    }

    .search-expand {
      position: absolute;
      top: calc(100% + 12px);
      right: 0;
      width: 280px;
      padding: 12px;
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: all 0.25s ease;
      box-shadow: var(--shadow-card);
    }

    .search-wrap:hover .search-expand,
    .search-expand:hover {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .search-expand input {
      width: 100%;
      height: 38px;
      background: var(--color-bg-soft);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-full);
      padding: 0 16px;
      font-size: 13px;
      color: var(--color-text-primary);
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .search-expand input:focus {
      border-color: var(--color-accent);
      box-shadow: 0 0 0 3px rgba(255, 90, 42, 0.15);
    }

    .btn-login {
      padding: 8px 18px;
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-primary);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }

    .btn-login:hover {
      border-color: var(--color-accent);
      color: var(--color-accent);
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 28px;
      font-size: 14px;
      font-weight: 600;
      background: var(--color-accent);
      color: #fff;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
      white-space: nowrap;
    }

    .btn-primary:hover {
      background: var(--color-accent-hover);
      box-shadow: var(--glow-accent);
      transform: translateY(-1px);
    }

    .btn-entry {
      height: 40px;
      padding: 0 22px;
      font-size: 13px;
    }

    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      align-items: center;
      justify-content: center;
      font-size: 18px;
      color: var(--color-text-primary);
      background: var(--color-bg-soft);
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--color-bg-soft);
      border-top: 1px solid var(--color-border);
      padding: 56px 0 28px;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .footer-brand .brand-name {
      font-family: var(--font-sans);
      font-size: 18px;
      font-weight: 700;
      color: var(--color-text-primary);
      display: block;
      margin-bottom: 8px;
    }

    .footer-brand p {
      font-size: 13px;
      color: var(--color-text-secondary);
      line-height: 1.8;
      max-width: 320px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links > span {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-text-primary);
      margin-bottom: 6px;
    }

    .footer-links a {
      font-size: 13px;
      color: var(--color-text-secondary);
      transition: color 0.2s ease;
    }

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

    .footer-meta {
      display: flex;
      flex-direction: column;
      gap: 6px;
      font-size: 13px;
      color: var(--color-text-tertiary);
    }

    .footer-bottom {
      grid-column: 1 / -1;
      text-align: center;
      font-size: 12px;
      color: var(--color-text-tertiary);
      border-top: 1px solid var(--color-border);
      padding-top: 20px;
      margin-top: 20px;
    }

    /* ===== 页面横幅 ===== */
    .page-banner {
      min-height: 220px;
      padding: 40px 0;
      margin-top: var(--header-height);
      background: linear-gradient(90deg, rgba(15, 17, 21, 0.92) 0%, rgba(15, 17, 21, 0.78) 50%, rgba(15, 17, 21, 0.55) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-bottom: 1px solid var(--color-border);
      display: flex;
      align-items: center;
    }

    .banner-inner {
      max-width: 760px;
    }

    .banner-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 4px 14px;
      background: var(--color-accent-soft);
      color: var(--color-accent);
      border-radius: var(--radius-full);
      font-size: 12px;
      font-weight: 500;
      margin-bottom: 14px;
      letter-spacing: 0.04em;
    }

    .banner-tag i {
      font-size: 12px;
    }

    .page-banner h1 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.2;
      color: var(--color-text-primary);
      margin-bottom: 10px;
      letter-spacing: -0.01em;
    }

    .page-banner p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.8;
      max-width: 600px;
    }

    /* ===== 通用板块 ===== */
    .section-label {
      font-family: var(--font-num);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--color-accent);
      display: block;
      margin-bottom: 10px;
    }

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px;
    }

    .section-head h2 {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--color-text-primary);
      margin-bottom: 12px;
    }

    .section-head p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.8;
    }

    /* ===== 介绍区 ===== */
    .intro-section {
      padding: 72px 0;
      background: var(--color-bg);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 6fr 5fr;
      gap: 56px;
      align-items: center;
    }

    .intro-content h2 {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--color-text-primary);
    }

    .intro-content p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.9;
      margin-bottom: 16px;
    }

    .intro-list {
      list-style: none;
      margin-top: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .intro-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--color-text-primary);
    }

    .intro-list li i {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--color-accent-soft);
      color: var(--color-accent);
      font-size: 11px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .intro-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-card);
    }

    .intro-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      aspect-ratio: 4 / 3;
    }

    /* ===== 数据统计 ===== */
    .stats-section {
      padding: 56px 0;
      background: var(--color-bg-soft);
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }

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

    .stat-item {
      text-align: center;
      padding: 16px 8px;
      position: relative;
    }

    .stat-item::after {
      content: "";
      position: absolute;
      right: 0;
      top: 20%;
      bottom: 20%;
      width: 1px;
      background: var(--color-border);
    }

    .stat-item:last-child::after {
      display: none;
    }

    .stat-num {
      display: block;
      font-family: var(--font-num);
      font-size: 40px;
      font-weight: 700;
      color: var(--color-text-primary);
      line-height: 1;
      margin-bottom: 6px;
    }

    .stat-num em {
      font-style: normal;
      color: var(--color-accent);
      font-size: 22px;
      font-weight: 700;
      vertical-align: baseline;
      margin-left: 2px;
    }

    .stat-label {
      font-size: 12px;
      color: var(--color-text-secondary);
    }

    /* ===== 内容方向卡片 ===== */
    .content-section {
      padding: 72px 0;
      background: var(--color-bg);
    }

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

    .content-card {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 32px 26px;
      transition: all 0.25s ease;
      position: relative;
    }

    .content-card:hover {
      border-color: var(--color-text-tertiary);
      background: #222733;
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--color-accent-soft);
      color: var(--color-accent);
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      transition: background 0.2s ease, color 0.2s ease;
    }

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

    .content-card h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-text-primary);
      margin-bottom: 10px;
    }

    .content-card p {
      font-size: 13px;
      color: var(--color-text-secondary);
      line-height: 1.75;
    }

    /* ===== 流程区 ===== */
    .process-section {
      padding: 72px 0;
      background: var(--color-bg-soft);
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }

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

    .process-step {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      position: relative;
      transition: all 0.25s ease;
    }

    .process-step:hover {
      border-color: var(--color-accent);
      box-shadow: var(--shadow-hover);
    }

    .step-num {
      font-family: var(--font-num);
      font-size: 34px;
      font-weight: 700;
      color: var(--color-accent);
      opacity: 0.45;
      line-height: 1;
      display: block;
      margin-bottom: 16px;
    }

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

    .process-step p {
      font-size: 13px;
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 72px 0;
      background: var(--color-bg);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 4fr 7fr;
      gap: 48px;
    }

    .faq-head h2 {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .faq-head p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.8;
    }

    .faq-list {
      border-top: 1px solid var(--color-border);
    }

    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 4px;
      font-size: 15px;
      font-weight: 500;
      color: var(--color-text-primary);
      text-align: left;
      transition: color 0.2s ease;
    }

    .faq-question i {
      font-size: 14px;
      color: var(--color-text-tertiary);
      transition: transform 0.25s ease, color 0.25s ease;
      flex-shrink: 0;
    }

    .faq-item.open .faq-question {
      color: var(--color-accent);
    }

    .faq-item.open .faq-question i {
      transform: rotate(45deg);
      color: var(--color-accent);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 4px;
    }

    .faq-answer p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.8;
      padding-bottom: 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 56px 0 24px;
      background: var(--color-bg);
    }

    .cta-box {
      max-width: 860px;
      margin: 0 auto;
      background: var(--color-bg-soft);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-box::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--color-accent);
    }

    .cta-box h2 {
      font-size: 26px;
      font-weight: 800;
      color: var(--color-text-primary);
      margin-bottom: 10px;
    }

    .cta-box p {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-bottom: 24px;
    }

    .btn-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 46px;
      padding: 0 34px;
      background: #fff;
      color: #111;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }

    .btn-light:hover {
      background: var(--color-accent-hover);
      color: #fff;
      box-shadow: var(--glow-accent);
      transform: translateY(-1px);
    }

    /* ===== 本分类导航 ===== */
    .cat-nav-section {
      padding: 56px 0 72px;
      background: var(--color-bg);
    }

    .cat-nav-section .section-head {
      margin-bottom: 32px;
    }

    .cat-nav-links {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    .cat-nav-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-secondary);
      transition: all 0.2s ease;
    }

    .cat-nav-item i {
      color: var(--color-accent);
      font-size: 13px;
    }

    .cat-nav-item:hover {
      color: var(--color-text-primary);
      border-color: var(--color-accent);
      box-shadow: var(--shadow-card);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1280px) {
      .container {
        max-width: 100%;
        padding: 0 32px;
      }
    }

    @media (max-width: 1024px) {
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .intro-media img {
        aspect-ratio: 16 / 9;
      }

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

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

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

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px 16px;
      }

      .stat-item::after {
        display: none;
      }

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

    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }

      .site-nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 280px;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        background: var(--color-bg-soft);
        border-left: 1px solid var(--color-border);
        padding: 86px 24px 24px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
      }

      .site-nav.open {
        transform: translateX(0);
      }

      .site-nav .nav-link {
        display: block;
        width: 100%;
        padding: 14px 12px;
        font-size: 15px;
        border-radius: var(--radius-md);
      }

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

      .site-nav .nav-link.active {
        background: var(--color-accent-soft);
      }

      .nav-toggle {
        display: flex;
      }

      .header-actions .btn-login,
      .header-actions .btn-entry {
        display: none;
      }

      .search-expand {
        right: -60px;
        width: 240px;
      }

      .page-banner {
        padding: 32px 0;
        min-height: 180px;
      }

      .page-banner h1 {
        font-size: 26px;
      }

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

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

      .stats-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .footer-inner {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .footer-meta {
        gap: 10px;
      }

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

      .cta-box {
        padding: 36px 24px;
      }

      .cta-box h2 {
        font-size: 21px;
      }
    }

    @media (max-width: 520px) {
      .brand-name {
        font-size: 17px;
      }

      .brand-sub {
        display: none;
      }

      .header-inner {
        gap: 12px;
      }

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

      .intro-content h2 {
        font-size: 24px;
      }

      .process-step {
        padding: 22px 18px;
      }

      .cat-nav-links {
        flex-direction: column;
        align-items: stretch;
      }

      .cat-nav-item {
        justify-content: center;
      }
    }

    /* 移动端遮罩 */
    .nav-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(4px);
      z-index: 999;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav-overlay.open {
      opacity: 1;
      visibility: visible;
    }

/* roulang page: category3 */
:root {
  --color-bg: #0F1115;
  --color-bg-soft: #171A21;
  --color-bg-card: #1C2028;
  --color-border: #2A2F3A;
  --color-text-primary: #F2F4F8;
  --color-text-secondary: #A0A6B2;
  --color-text-tertiary: #6B7280;
  --color-accent: #FF5A2A;
  --color-accent-hover: #FF7A45;
  --color-accent-soft: rgba(255, 90, 42, 0.12);
  --color-success: #18A058;
  --color-warning: #F0A020;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.4);
  --glow-accent: 0 0 20px rgba(255,90,42,0.25);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", "Roboto Condensed", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }
.container { width: 1200px; max-width: 92%; margin: 0 auto; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 72px; background: rgba(15,17,21,0.92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner { height: 72px; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 32px; height: 32px; border-radius: var(--radius-sm);
  background: var(--color-accent); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-num); font-weight: 700; font-size: 18px; letter-spacing: 0.5px; color: #fff; }
.brand-sub { font-size: 11px; color: var(--color-text-secondary); font-weight: 400; letter-spacing: 1px; }
.site-nav { display: flex; gap: 28px; margin-left: 12px; }
.nav-link {
  font-size: 15px; color: var(--color-text-secondary); font-weight: 500; position: relative; padding: 6px 0;
}
.nav-link:hover { color: var(--color-text-primary); }
.nav-link.active { color: var(--color-accent); }
.nav-link.active::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px;
  background: var(--color-accent); border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.search-wrap { position: relative; }
.search-toggle { width: 36px; height: 36px; border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; color: var(--color-text-secondary); font-size: 15px; transition: all 0.2s ease; }
.search-toggle:hover { color: #fff; background: var(--color-bg-soft); }
.search-expand {
  position: absolute; right: 0; top: 44px; width: 0; opacity: 0; overflow: hidden; transition: width 0.3s ease, opacity 0.2s ease;
}
.search-wrap:hover .search-expand, .search-wrap:focus-within .search-expand {
  width: 260px; opacity: 1;
}
.search-expand input {
  width: 100%; height: 44px; background: var(--color-bg-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius-full); padding: 0 18px; color: #fff; font-size: 14px; outline: none;
  transition: border-color 0.2s ease;
}
.search-expand input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(255,90,42,0.15); }
.btn-login {
  font-size: 14px; font-weight: 500; color: var(--color-text-primary);
  padding: 8px 4px; position: relative;
}
.btn-login::after {
  content: ""; position: absolute; left: 0; bottom: 2px; width: 100%; height: 1px;
  background: transparent; transition: background 0.2s ease;
}
.btn-login:hover::after { background: var(--color-accent); }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 28px;
  background: var(--color-accent); color: #fff; font-size: 14px; font-weight: 600;
  border-radius: var(--radius-md); transition: all 0.2s ease; white-space: nowrap;
}
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); box-shadow: var(--glow-accent); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.nav-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; font-size: 18px; color: var(--color-text-primary); }
.nav-toggle:hover { color: var(--color-accent); }

/* Page banner */
.page-banner {
  padding-top: 120px; padding-bottom: 48px; position: relative;
  background: linear-gradient(90deg, var(--color-bg) 55%, rgba(15,17,21,0.7) 80%, rgba(15,17,21,0.4));
  border-bottom: 1px solid var(--color-border);
  min-height: 240px;
}
.page-banner .banner-bg {
  position: absolute; top: 0; right: 0; width: 45%; height: 100%;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover; background-position: center; opacity: 0.25; z-index: 0;
}
.page-banner .container { position: relative; z-index: 1; }
.banner-inner { max-width: 720px; }
.page-banner h1 { font-size: 32px; font-weight: 800; line-height: 1.3; margin-bottom: 10px; letter-spacing: 0.5px; }
.page-banner .banner-desc { font-size: 14px; color: var(--color-text-secondary); max-width: 560px; line-height: 1.8; }

/* Breadcrumb */
.breadcrumb {
  padding: 96px 0 0; font-size: 12px; color: var(--color-text-tertiary);
}
.breadcrumb a { color: var(--color-text-tertiary); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .current { color: var(--color-text-primary); }
.breadcrumb .sep { margin: 0 8px; color: var(--color-border); }

/* Section general */
.section-pad { padding: 72px 0; }
.section-title-wrap { margin-bottom: 40px; }
.section-label {
  font-family: var(--font-num); font-size: 12px; letter-spacing: 0.2em;
  color: var(--color-accent); text-transform: uppercase; display: block; margin-bottom: 8px;
}
.section-title { font-size: 28px; font-weight: 700; line-height: 1.3; letter-spacing: 0.5px; }
.section-desc { font-size: 15px; color: var(--color-text-secondary); margin-top: 10px; max-width: 640px; line-height: 1.8; }

/* Split layout */
.split-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 56px; align-items: start; }
.split-grid.rev { grid-template-columns: 5fr 7fr; }
.split-block h2 { font-size: 26px; font-weight: 700; line-height: 1.35; margin-bottom: 18px; letter-spacing: 0.5px; }
.split-block p { font-size: 15px; color: var(--color-text-secondary); line-height: 1.9; margin-bottom: 14px; }
.split-block .highlight {
  color: var(--color-text-primary); font-weight: 500; font-size: 15px; line-height: 1.9; margin-bottom: 14px;
}
.split-block ul { list-style: none; margin: 16px 0 0; }
.split-block ul li { font-size: 14px; color: var(--color-text-secondary); line-height: 1.8; padding-left: 22px; position: relative; margin-bottom: 8px; }
.split-block ul li::before {
  content: ""; position: absolute; left: 2px; top: 10px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--color-accent);
}
.split-block .img-frame {
  border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}
.split-block .img-frame img { width: 100%; height: auto; transition: transform 0.4s ease; }
.split-block .img-frame:hover img { transform: scale(1.02); }

/* Stat cards */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 20px; }
.stat-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 28px 24px; transition: border-color 0.2s ease, background 0.2s ease;
}
.stat-card:hover { border-color: var(--color-accent); }
.stat-card .num {
  font-family: var(--font-num); font-size: 32px; font-weight: 700; color: var(--color-accent); line-height: 1.2;
}
.stat-card .label { font-size: 13px; color: var(--color-text-secondary); margin-top: 6px; }
.stat-card .desc { font-size: 12px; color: var(--color-text-tertiary); margin-top: 4px; line-height: 1.5; }

/* Feature list */
.feature-list { display: flex; flex-direction: column; gap: 0; }
.feature-item {
  display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--color-border); align-items: flex-start;
  transition: padding-left 0.2s ease;
}
.feature-item:hover { padding-left: 6px; }
.feature-item:last-child { border-bottom: none; }
.feature-icon {
  width: 40px; height: 40px; border-radius: var(--radius-md); flex-shrink: 0;
  background: var(--color-accent-soft); color: var(--color-accent);
  display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.feature-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.feature-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* Check list */
.check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 28px; margin-top: 20px; }
.check-list li {
  display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--color-text-secondary); line-height: 1.7;
}
.check-list li i { color: var(--color-success); font-size: 13px; margin-top: 4px; }
.check-list li strong { color: var(--color-text-primary); font-weight: 500; }

/* Image cards */
.image-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
.image-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  overflow: hidden; transition: border-color 0.2s ease, transform 0.2s ease;
}
.image-card:hover { border-color: var(--color-accent); transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.image-card .card-img { aspect-ratio: 16 / 9; overflow: hidden; }
.image-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.image-card:hover .card-img img { transform: scale(1.05); }
.image-card .card-body { padding: 20px 22px 24px; }
.image-card .card-tag {
  font-size: 12px; color: var(--color-accent); background: var(--color-accent-soft);
  padding: 2px 10px; border-radius: var(--radius-full); display: inline-block; margin-bottom: 10px;
}
.image-card h3 { font-size: 17px; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.image-card p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.7; }

/* FAQ */
.faq-section { background: var(--color-bg-soft); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.faq-item { padding: 22px 0; border-bottom: 1px solid var(--color-border); }
.faq-item:last-child { border-bottom: none; }
.faq-question {
  display: flex; justify-content: space-between; align-items: center; font-size: 16px; font-weight: 600;
  color: var(--color-text-primary); cursor: pointer; transition: color 0.2s ease; gap: 16px;
}
.faq-question:hover { color: var(--color-accent); }
.faq-item.active .faq-question { color: var(--color-accent); }
.faq-icon { font-size: 16px; color: var(--color-text-tertiary); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--color-accent); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease, margin-top 0.3s ease;
  font-size: 14px; color: var(--color-text-secondary); line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 300px; margin-top: 12px; }

/* Category nav block */
.category-nav-block {
  background: var(--color-bg-soft); border-top: 1px solid var(--color-border); padding: 40px 0;
}
.cat-nav-list { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cat-nav-list a {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px;
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
  font-size: 14px; color: var(--color-text-secondary); transition: all 0.2s ease;
  background: var(--color-bg-card);
}
.cat-nav-list a:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* CTA */
.cta-block {
  padding: 32px 0 64px; background: var(--color-bg);
}
.cta-inner {
  background: var(--color-accent); border-radius: var(--radius-lg);
  padding: 48px 56px; text-align: center; position: relative; overflow: hidden;
}
.cta-inner::before {
  content: ""; position: absolute; top: -30px; right: -30px; width: 120px; height: 120px;
  background: rgba(255,255,255,0.08); transform: rotate(45deg);
}
.cta-inner::after {
  content: ""; position: absolute; bottom: -20px; left: -20px; width: 80px; height: 80px;
  background: rgba(255,255,255,0.08); transform: rotate(45deg);
}
.cta-inner h2 { font-size: 30px; font-weight: 800; color: #fff; margin-bottom: 12px; line-height: 1.3; }
.cta-inner p { font-size: 16px; color: rgba(255,255,255,0.9); margin-bottom: 28px; max-width: 640px; margin-left: auto; margin-right: auto; }
.btn-inverse {
  display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 36px;
  background: #fff; color: var(--color-accent); font-size: 15px; font-weight: 700;
  border-radius: var(--radius-md); transition: all 0.2s ease;
}
.btn-inverse:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

/* Footer */
.site-footer {
  background: var(--color-bg-soft); border-top: 1px solid var(--color-border); padding: 56px 0 32px;
}
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer-brand .brand-name { font-family: var(--font-num); font-size: 20px; font-weight: 700; color: #fff; display: block; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.8; max-width: 320px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links > span { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 8px; }
.footer-links a { font-size: 14px; color: var(--color-text-secondary); }
.footer-links a:hover { color: var(--color-accent); }
.footer-meta { display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--color-text-tertiary); }
.footer-bottom {
  grid-column: 1 / -1; text-align: center; padding-top: 24px; margin-top: 24px;
  border-top: 1px solid var(--color-border); color: var(--color-text-tertiary); font-size: 13px;
}
.footer-bottom span { display: block; margin-bottom: 4px; }

/* Responsive */
@media (max-width: 1024px) {
  .site-nav { gap: 18px; }
  .nav-link { font-size: 14px; }
  .split-grid, .split-grid.rev { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .image-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .site-nav {
    display: none; position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: var(--color-bg-soft); flex-direction: column; gap: 0; padding: 32px 24px;
    overflow-y: auto; z-index: 99;
  }
  .site-nav.open { display: flex; }
  .nav-link { font-size: 20px; padding: 16px 0; border-bottom: 1px solid var(--color-border); color: var(--color-text-secondary); }
  .nav-link.active { color: var(--color-accent); }
  .nav-link.active::after { display: none; }
  .btn-login { display: none; }
  .btn-entry { display: none; }
  .nav-toggle { display: flex; }
  .search-wrap:hover .search-expand, .search-wrap:focus-within .search-expand {
    position: fixed; top: 64px; left: 20px; right: 20px; width: auto; z-index: 110;
  }
  .page-banner { padding-top: 100px; min-height: auto; }
  .page-banner h1 { font-size: 26px; }
  .page-banner .banner-bg { display: none; }
  .split-grid, .split-grid.rev { grid-template-columns: 1fr; gap: 32px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 20px 16px; }
  .stat-card .num { font-size: 28px; }
  .image-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .cta-inner { padding: 40px 24px; }
  .cta-inner h2 { font-size: 24px; }
  .check-list { grid-template-columns: 1fr; }
  .section-pad { padding: 56px 0; }
  .section-title { font-size: 24px; }
}
@media (max-width: 520px) {
  .header-inner { gap: 16px; }
  .brand-sub { display: none; }
  .search-toggle { display: none; }
}