/* roulang page: index */
:root {
  --ky-primary: #2563eb;
  --ky-primary-dark: #1d4ed8;
  --ky-primary-light: #dbeafe;
  --ky-accent: #f97316;
  --ky-accent-hover: #ea580c;
  --ky-accent-light: #fff7ed;
  --ky-dark: #172554;
  --ky-bg: #f6f8fc;
  --ky-card: #ffffff;
  --ky-text: #1e293b;
  --ky-muted: #64748b;
  --ky-border: #e2e8f0;
  --ky-radius: 14px;
  --ky-radius-lg: 20px;
  --ky-shadow: 0 4px 24px rgba(15, 23, 42, 0.07);
  --ky-shadow-hover: 0 14px 40px rgba(37, 99, 235, 0.12);
  --ky-transition: all 0.3s ease;
  --ky-grad: linear-gradient(135deg, #2563eb 0%, #4f46e5 60%, #7c3aed 100%);
  --ky-grad-accent: linear-gradient(135deg, #f97316 0%, #f59e0b 100%);
}
*, *::before, *::after { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--ky-bg);
  color: var(--ky-text);
  line-height: 1.65;
  margin: 0;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--ky-transition); }
img { max-width: 100%; height: auto; }
.container { max-width: 1240px; padding-left: 20px; padding-right: 20px; }
.btn { border-radius: 10px; font-weight: 600; padding: 10px 24px; transition: var(--ky-transition); border: none; }
.btn:focus, .form-control:focus, .form-check-input:focus { outline: none; box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18); }
.btn-primary { background: var(--ky-primary); color: #fff; }
.btn-primary:hover { background: var(--ky-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25); }
.btn-accent { background: var(--ky-accent); color: #fff; border-radius: 999px; padding: 10px 28px; }
.btn-accent:hover { background: var(--ky-accent-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3); color: #fff; }
.btn-outline-light { border: 2px solid rgba(255,255,255,0.7); color: #fff; border-radius: 999px; padding: 10px 28px; background: transparent; }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-2px); color: #fff; }
.btn-light-custom { background: #fff; color: var(--ky-primary); border-radius: 999px; padding: 10px 28px; font-weight: 600; }
.btn-light-custom:hover { background: #f1f5f9; color: var(--ky-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,0.12); }

/* 顶部实时状态条 */
.site-topbar {
  background: var(--ky-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  padding: 7px 0;
  position: relative;
  z-index: 1030;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.topbar-left { display: flex; align-items: center; gap: 20px; }
.live-dot { display: inline-block; width: 8px; height: 8px; background: #22c55e; border-radius: 50%; margin-right: 6px; position: relative; animation: pulse-dot 1.6s infinite; }
@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(34,197,94,0.6); }
  70% { box-shadow: 0 0 0 8px rgba(34,197,94,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); }
}
.topbar-right { display: flex; align-items: center; gap: 16px; font-size: 12px; }
.topbar-right a { color: rgba(255,255,255,0.75); }
.topbar-right a:hover { color: #fff; }

/* 主头部 */
.site-header {
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1020;
  box-shadow: 0 2px 16px rgba(15,23,42,0.06);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}
.brand-logo {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ky-primary);
  letter-spacing: -0.5px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-logo .brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--ky-grad);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 4px 10px rgba(37,99,235,0.3);
}
.header-search {
  display: flex;
  align-items: center;
  background: var(--ky-bg);
  border: 1px solid var(--ky-border);
  border-radius: 999px;
  padding: 4px 4px 4px 18px;
  flex: 1;
  max-width: 380px;
  transition: var(--ky-transition);
}
.header-search:focus-within { border-color: var(--ky-primary); background: #fff; box-shadow: 0 0 0 3px rgba(37,99,235,0.12); }
.header-search input { border: none; background: transparent; outline: none; flex: 1; font-size: 14px; padding: 8px 0; color: var(--ky-text); }
.header-search input::placeholder { color: var(--ky-muted); }
.header-search button {
  background: var(--ky-primary);
  border: none;
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--ky-transition);
}
.header-search button:hover { background: var(--ky-primary-dark); transform: scale(1.05); }
.header-top-right { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  background: var(--ky-primary-light);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--ky-primary);
  font-size: 18px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle:hover { background: var(--ky-primary); color: #fff; }
.header-tabs {
  display: flex;
  gap: 6px;
  padding: 0 0 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.header-tabs::-webkit-scrollbar { display: none; }
.tab-item {
  padding: 8px 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ky-muted);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: var(--ky-transition);
}
.tab-item:hover { color: var(--ky-primary); background: var(--ky-primary-light); }
.tab-item.active {
  background: var(--ky-grad);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,0.25);
}
.mobile-collapse-menu {
  padding: 16px 0 20px;
  border-top: 1px solid var(--ky-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-collapse-menu .mobile-link {
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 500;
  color: var(--ky-text);
  background: var(--ky-bg);
}
.mobile-collapse-menu .mobile-link.active { background: var(--ky-primary-light); color: var(--ky-primary); font-weight: 600; }

/* Hero */
.hero-section {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 100px 0 90px;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.62) 50%, rgba(37,99,235,0.35) 100%);
}
.hero-section .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 13px;
  color: #fff;
  backdrop-filter: blur(6px);
  margin-bottom: 20px;
}
.hero-badge i { color: #fbbf24; }
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: -1px;
}
.hero-title .grad-text {
  background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 42px; }
.hero-meta {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-meta-item { color: rgba(255,255,255,0.9); }
.hero-meta-item .num { font-size: 28px; font-weight: 800; color: #fff; display: block; line-height: 1.2; }
.hero-meta-item .label { font-size: 13px; opacity: 0.75; }
.hero-countdown {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(249,115,22,0.15);
  border: 1px solid rgba(249,115,22,0.35);
  border-radius: 999px;
  padding: 8px 22px;
  margin-top: 18px;
  color: #fff;
  font-size: 14px;
}
.hero-countdown .cd-label { color: #fbbf24; font-weight: 600; }
.hero-countdown .cd-box {
  background: rgba(255,255,255,0.15);
  border-radius: 6px;
  padding: 2px 8px;
  font-weight: 700;
  font-size: 16px;
  min-width: 34px;
  text-align: center;
}

/* 板块通用 */
.section { padding: 72px 0; }
.section-alt { background: #fff; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-head .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--ky-primary);
  background: var(--ky-primary-light);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; color: var(--ky-dark); margin-bottom: 12px; }
.section-head p { color: var(--ky-muted); font-size: 15px; line-height: 1.7; }

/* 核心特色卡片 */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--ky-card);
  border-radius: var(--ky-radius-lg);
  padding: 32px 26px;
  border: 1px solid var(--ky-border);
  box-shadow: var(--ky-shadow);
  transition: var(--ky-transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--ky-primary-light);
  opacity: 0.5;
  transition: var(--ky-transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--ky-shadow-hover); border-color: transparent; }
.feature-card:hover::before { transform: scale(2); }
.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--ky-grad);
  color: #fff;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(37,99,235,0.25);
}
.feature-card:nth-child(2) .feature-icon { background: linear-gradient(135deg, #f97316, #f59e0b); box-shadow: 0 6px 16px rgba(249,115,22,0.25); }
.feature-card:nth-child(3) .feature-icon { background: linear-gradient(135deg, #10b981, #059669); box-shadow: 0 6px 16px rgba(16,185,129,0.25); }
.feature-card:nth-child(4) .feature-icon { background: linear-gradient(135deg, #8b5cf6, #6366f1); box-shadow: 0 6px 16px rgba(139,92,246,0.25); }
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--ky-dark); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--ky-muted); line-height: 1.65; margin: 0; }

/* 数据统计 */
.stats-section {
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 70px 0;
}
.stats-section::before { content: ''; position: absolute; inset: 0; background: rgba(23,37,84,0.88); }
.stats-section .container { position: relative; z-index: 2; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item { padding: 24px 16px; }
.stat-item .stat-num { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.1; margin-bottom: 6px; }
.stat-item .stat-num i { font-size: 30px; margin-right: 8px; }
.stat-item .stat-label { font-size: 14px; color: rgba(255,255,255,0.7); }
.stat-item .stat-bar { height: 4px; width: 44px; background: var(--ky-accent); border-radius: 2px; margin: 14px auto 0; }

/* 分类卡片 */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.category-card {
  border-radius: var(--ky-radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--ky-border);
  box-shadow: var(--ky-shadow);
  transition: var(--ky-transition);
  display: block;
  position: relative;
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--ky-shadow-hover); }
.category-card .cat-img { position: relative; height: 200px; overflow: hidden; }
.category-card .cat-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .cat-img img { transform: scale(1.08); }
.category-card .cat-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(15,23,42,0.5));
}
.category-card .cat-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255,255,255,0.92);
  color: var(--ky-primary);
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  padding: 5px 14px;
  backdrop-filter: blur(4px);
}
.category-card .cat-body { padding: 22px 24px 26px; }
.category-card .cat-body h3 { font-size: 18px; font-weight: 700; color: var(--ky-dark); margin-bottom: 8px; }
.category-card .cat-body p { font-size: 14px; color: var(--ky-muted); line-height: 1.6; margin-bottom: 14px; }
.category-card .cat-more { font-size: 14px; font-weight: 600; color: var(--ky-primary); display: inline-flex; align-items: center; gap: 6px; }
.category-card .cat-more i { transition: transform 0.25s ease; }
.category-card:hover .cat-more i { transform: translateX(4px); }

/* 最新动态 */
.news-section { background: #fff; }
.news-list { display: grid; grid-template-columns: 1fr; gap: 0; max-width: 880px; margin: 0 auto; }
.news-item {
  display: flex;
  gap: 20px;
  padding: 26px 10px;
  border-bottom: 1px solid var(--ky-border);
  transition: var(--ky-transition);
  border-radius: 0;
}
.news-item:hover { background: var(--ky-bg); padding-left: 18px; padding-right: 18px; border-radius: var(--ky-radius); }
.news-item:first-child { border-top: 1px solid var(--ky-border); }
.news-item .news-date {
  flex-shrink: 0;
  width: 64px;
  text-align: center;
  background: var(--ky-bg);
  border-radius: 12px;
  padding: 10px 6px;
  align-self: flex-start;
}
.news-item .news-date .d-day { font-size: 22px; font-weight: 800; color: var(--ky-primary); line-height: 1; }
.news-item .news-date .d-month { font-size: 12px; color: var(--ky-muted); }
.news-item .news-info { flex: 1; }
.news-item .news-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ky-primary);
  background: var(--ky-primary-light);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}
.news-item .news-info h3 { font-size: 17px; font-weight: 700; color: var(--ky-text); margin-bottom: 6px; }
.news-item .news-info h3 a:hover { color: var(--ky-primary); }
.news-item .news-info p { font-size: 14px; color: var(--ky-muted); margin: 0; line-height: 1.6; }
.news-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--ky-muted);
  border: 2px dashed var(--ky-border);
  border-radius: var(--ky-radius-lg);
  background: var(--ky-bg);
}
.news-empty i { font-size: 36px; margin-bottom: 12px; display: block; color: #cbd5e1; }
.news-list-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 880px; margin: 0 auto; }
.news-card {
  background: var(--ky-card);
  border: 1px solid var(--ky-border);
  border-radius: var(--ky-radius);
  padding: 24px;
  transition: var(--ky-transition);
  box-shadow: var(--ky-shadow);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--ky-shadow-hover); }
.news-card .news-card-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ky-primary);
  background: var(--ky-primary-light);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 10px;
}
.news-card h3 { font-size: 16px; font-weight: 700; color: var(--ky-text); margin-bottom: 8px; line-height: 1.4; }
.news-card h3 a:hover { color: var(--ky-primary); }
.news-card p { font-size: 14px; color: var(--ky-muted); margin-bottom: 12px; line-height: 1.6; }
.news-card .news-card-meta { font-size: 12px; color: #94a3b8; display: flex; align-items: center; gap: 10px; }
.news-card .news-card-meta i { font-size: 13px; }
.news-card .read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ky-primary);
  transition: gap 0.25s ease;
}
.news-card .read-more:hover { gap: 10px; }

/* 使用流程 */
.steps-section {
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  position: relative;
}
.steps-section::before { content: ''; position: absolute; inset: 0; background: rgba(255,255,255,0.95); }
.steps-section .container { position: relative; z-index: 2; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 60px;
  right: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--ky-primary-light), var(--ky-accent));
  z-index: 0;
  opacity: 0.5;
}
.step-item { text-align: center; position: relative; z-index: 1; }
.step-num {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--ky-grad);
  color: #fff;
  font-size: 26px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 10px 25px rgba(37,99,235,0.3);
  border: 4px solid #fff;
}
.step-item h3 { font-size: 17px; font-weight: 700; color: var(--ky-dark); margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--ky-muted); line-height: 1.6; max-width: 220px; margin: 0 auto; }

/* FAQ */
.faq-section { background: #fff; }
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  margin-bottom: 14px;
  border: 1px solid var(--ky-border);
  border-radius: var(--ky-radius);
  overflow: hidden;
  background: var(--ky-card);
  transition: var(--ky-transition);
}
.faq-item:hover { border-color: var(--ky-primary); box-shadow: var(--ky-shadow); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ky-dark);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon { color: var(--ky-primary); transition: transform 0.3s ease; }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 22px 18px; font-size: 14px; color: var(--ky-muted); line-height: 1.7; }

/* CTA */
.cta-section {
  padding: 70px 0;
  background: var(--ky-grad);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 70%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 60%);
  transform: rotate(15deg);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; color: #fff; margin-bottom: 14px; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 16px; margin-bottom: 30px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 页脚 */
.site-footer { background: var(--ky-dark); color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .brand-logo { color: #fff; margin-bottom: 14px; }
.footer-brand .brand-logo .brand-icon { background: var(--ky-grad); }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 360px; }
.footer-links h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a { font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-links ul li a:hover { color: var(--ky-accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* 滚动进入动画 */
.fade-in-up { opacity: 0; transform: translateY(28px); transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

/* 响应式断点 */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .steps-grid::before { display: none; }
}
@media (max-width: 768px) {
  .header-search { display: none; }
  .nav-toggle { display: flex; }
  .header-top .header-btn { display: none; }
  .hero-section { padding: 64px 0 60px; }
  .section { padding: 52px 0; }
  .category-grid { grid-template-columns: 1fr; }
  .news-list-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-meta { gap: 24px; }
  .hero-countdown { flex-wrap: wrap; }
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 520px) {
  .feature-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stat-item .stat-num { font-size: 32px; }
  .brand-logo { font-size: 1.15rem; }
  .tab-item { padding: 7px 16px; font-size: 13px; }
  .hero-title { font-size: 1.8rem; }
  .hero-btns .btn { padding: 9px 20px; font-size: 14px; }
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --c-primary: #6366f1;
            --c-primary-2: #8b5cf6;
            --c-accent: #f5a524;
            --c-accent-2: #10b981;
            --c-danger: #ef4444;
            --c-bg: #0d0f1c;
            --c-bg-card: #151830;
            --c-bg-card-hover: #1b1f3b;
            --c-bg-soft: #1d2237;
            --c-border: rgba(255, 255, 255, 0.08);
            --c-border-2: rgba(255, 255, 255, 0.14);
            --c-text: #eef0f8;
            --c-text-2: #b6bdd4;
            --c-text-3: #737d9a;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
            --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.22);
            --transition: all .25s cubic-bezier(.4, 0, .2, 1);
            --font: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--c-bg);
            color: var(--c-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--c-accent);
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            padding: 0 20px;
        }
        ul {
            list-style: none;
        }

        /* ========== 顶部导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 15, 28, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--c-border);
        }
        .header-top {
            min-height: 72px;
            gap: 16px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.3px;
            color: var(--c-text);
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--c-text);
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 6px 18px rgba(99, 102, 241, 0.45);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search {
            position: relative;
            width: 240px;
        }
        .header-search i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--c-text-3);
            font-size: 14px;
            pointer-events: none;
        }
        .header-search input {
            width: 100%;
            height: 42px;
            padding: 0 14px 0 40px;
            border-radius: 999px;
            border: 1px solid var(--c-border);
            background: var(--c-bg-soft);
            color: var(--c-text);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }
        .header-search input:focus {
            border-color: var(--c-primary);
            box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 22px;
            border-radius: 999px;
            border: none;
            background: linear-gradient(135deg, #ffb800, #ff8a00);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(255, 170, 0, 0.3);
            white-space: nowrap;
        }
        .btn-accent:hover {
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 170, 0, 0.4);
        }
        .btn-accent:active {
            transform: scale(0.97);
        }

        /* 频道 Tabs 导航 */
        .header-tabs {
            display: flex;
            gap: 6px;
            padding: 8px 0 14px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .header-tabs::-webkit-scrollbar {
            display: none;
        }
        .tab-item {
            padding: 9px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--c-text-2);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid transparent;
            white-space: nowrap;
            transition: var(--transition);
        }
        .tab-item:hover {
            color: var(--c-text);
            background: rgba(255, 255, 255, 0.08);
        }
        .tab-item.active {
            color: #fff;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
            border-color: transparent;
        }

        /* ========== 页面横幅 BANNER ========== */
        .page-banner {
            position: relative;
            padding: 84px 0 90px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 28, 0.92), rgba(13, 15, 28, 0.72));
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .breadcrumb-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--c-text-3);
            background: rgba(255, 255, 255, 0.06);
            padding: 8px 18px;
            border-radius: 999px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .breadcrumb-custom a {
            color: var(--c-text-2);
        }
        .breadcrumb-custom a:hover {
            color: var(--c-accent);
        }
        .banner-title {
            font-size: clamp(28px, 4vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            background: linear-gradient(90deg, #fff, #c7c9f5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .banner-desc {
            font-size: 16px;
            color: var(--c-text-2);
            max-width: 620px;
            margin: 0 auto 28px;
        }
        .banner-search {
            max-width: 520px;
            margin: 0 auto;
        }

        /* ========== 实时状态条 ========== */
        .live-strip {
            padding: 20px 0;
            position: relative;
            z-index: 5;
        }
        .live-strip .container {
            margin-top: -42px;
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 22px 28px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .live-stat {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .live-stat-icon {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .live-stat-icon.purple {
            background: rgba(99, 102, 241, 0.15);
            color: #a5a7ff;
        }
        .live-stat-icon.green {
            background: rgba(16, 185, 129, 0.15);
            color: var(--c-accent-2);
        }
        .live-stat-icon.amber {
            background: rgba(245, 165, 36, 0.15);
            color: var(--c-accent);
        }
        .live-stat-icon.blue {
            background: rgba(59, 130, 246, 0.15);
            color: #60a5fa;
        }
        .live-stat-info .num {
            font-size: 20px;
            font-weight: 800;
            line-height: 1.2;
        }
        .live-stat-info .label {
            font-size: 12px;
            color: var(--c-text-3);
        }
        .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-accent-2);
            margin-right: 6px;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
            animation: pulse 1.8s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(16, 185, 129, 0.05);
            }
        }

        /* ========== 指南分类入口 ========== */
        .section {
            padding: 64px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--c-primary-2);
            background: rgba(139, 92, 246, 0.12);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 10px;
        }
        .section-desc {
            color: var(--c-text-2);
            max-width: 620px;
            margin-bottom: 36px;
        }
        .guide-card {
            position: relative;
            border-radius: var(--radius-md);
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            padding: 28px 24px;
            height: 100%;
            transition: var(--transition);
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-primary-2));
            opacity: 0;
            transition: var(--transition);
        }
        .guide-card:hover {
            background: var(--c-bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--c-border-2);
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card .card-number {
            font-size: 44px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.06);
            position: absolute;
            top: 16px;
            right: 20px;
            line-height: 1;
        }
        .guide-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.1));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--c-primary-2);
            margin-bottom: 18px;
        }
        .guide-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .guide-card p {
            color: var(--c-text-2);
            font-size: 14px;
            margin-bottom: 18px;
            line-height: 1.7;
        }
        .guide-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--c-primary-2);
        }
        .guide-card .card-link i {
            transition: transform 0.25s;
        }
        .guide-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ========== 使用流程 ========== */
        .process-section {
            background: var(--c-bg-soft);
            border-top: 1px solid var(--c-border);
            border-bottom: 1px solid var(--c-border);
            padding: 64px 0;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            text-align: center;
            padding: 28px 20px;
            border-radius: var(--radius-md);
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            position: relative;
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-2));
            color: #fff;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
            box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
        }
        .process-step h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--c-text-3);
            font-size: 13px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 文章列表 ========== */
        .article-list .article-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            margin-bottom: 14px;
            transition: var(--transition);
        }
        .article-item:hover {
            background: var(--c-bg-card-hover);
            border-color: var(--c-border-2);
            transform: translateX(6px);
        }
        .article-item .article-index {
            font-size: 26px;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.1);
            min-width: 40px;
            text-align: center;
            font-style: italic;
        }
        .article-item .article-main {
            flex: 1;
            min-width: 0;
        }
        .article-item .article-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .article-item .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--c-text-3);
        }
        .article-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(139, 92, 246, 0.16);
            color: #b8a8ff;
        }
        .article-tag.amber {
            background: rgba(245, 165, 36, 0.15);
            color: var(--c-accent);
        }
        .article-tag.green {
            background: rgba(16, 185, 129, 0.15);
            color: var(--c-accent-2);
        }
        .hot-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(239, 68, 68, 0.15);
            color: #f87171;
            font-size: 12px;
            font-weight: 600;
        }
        .article-arrow {
            color: var(--c-text-3);
            font-size: 18px;
            transition: var(--transition);
        }
        .article-item:hover .article-arrow {
            color: var(--c-accent);
            transform: translateX(4px);
        }

        /* ========== 安全提示横幅 ========== */
        .tips-banner {
            background: linear-gradient(135deg, rgba(255, 154, 66, 0.12), rgba(255, 90, 90, 0.08));
            border: 1px solid rgba(255, 165, 40, 0.25);
            border-radius: var(--radius-lg);
            padding: 36px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .tips-banner i.fa-shield {
            font-size: 34px;
            color: var(--c-accent);
            margin-top: 4px;
        }
        .tips-banner h4 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .tips-banner p {
            color: var(--c-text-2);
            font-size: 14px;
            margin-bottom: 6px;
            max-width: 720px;
        }
        .tips-banner ul {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 12px;
        }
        .tips-banner li {
            font-size: 13px;
            color: var(--c-text-2);
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 14px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .tips-banner li i {
            color: var(--c-accent-2);
            font-size: 11px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--c-bg-soft);
            padding: 64px 0;
        }
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--c-bg-card);
            border: 1px solid var(--c-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--c-border-2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--c-text);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--c-primary-2);
        }
        .faq-question .faq-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: rgba(99, 102, 241, 0.12);
            color: var(--c-primary-2);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-answer {
            display: none;
            padding: 0 24px 22px 72px;
            color: var(--c-text-2);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--c-primary);
            color: #fff;
        }
        .faq-item.open .fas.fa-plus {
            transform: rotate(45deg);
            transition: transform 0.3s;
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-3.png') center / cover fixed no-repeat;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 15, 28, 0.9), rgba(20, 18, 40, 0.85));
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            padding: 30px 0;
        }
        .cta-inner h3 {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: var(--c-text-2);
            margin-bottom: 28px;
            font-size: 16px;
        }
        .btn-cta-main {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 38px;
            border-radius: 999px;
            background: linear-gradient(135deg, #ffb800, #ff8a00);
            color: #1a1a1a;
            font-weight: 800;
            font-size: 16px;
            box-shadow: 0 12px 32px rgba(255, 170, 0, 0.35);
            transition: var(--transition);
        }
        .btn-cta-main:hover {
            color: #1a1a1a;
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 18px 44px rgba(255, 170, 0, 0.45);
        }
        .cta-note {
            margin-top: 16px;
            font-size: 13px;
            color: var(--c-text-3);
        }

        /* ========== 页脚 FOOTER ========== */
        .site-footer {
            background: #090b14;
            padding: 56px 0 0;
            border-top: 1px solid var(--c-border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--c-text-3);
            font-size: 14px;
            line-height: 1.8;
            max-width: 400px;
        }
        .footer-links h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            color: var(--c-text-3);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links ul li a:hover {
            color: var(--c-accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--c-border);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--c-text-3);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .header-search {
                width: 180px;
            }
            .live-strip .container {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 767px) {
            .header-top {
                flex-wrap: wrap;
                min-height: 60px;
            }
            .header-actions {
                width: 100%;
                justify-content: space-between;
            }
            .header-search {
                flex: 1;
                width: auto;
            }
            .header-search input {
                font-size: 13px;
            }
            .brand-logo {
                font-size: 19px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .page-banner {
                padding: 60px 0 74px;
            }
            .section {
                padding: 48px 0;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .live-strip .container {
                padding: 18px 20px;
            }
            .tips-banner {
                padding: 24px;
                flex-direction: column;
            }
            .faq-question {
                font-size: 14px;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px 18px 56px;
            }
            .article-item {
                padding: 16px;
                gap: 12px;
            }
            .article-item .article-title {
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .header-tabs {
                padding-bottom: 10px;
            }
            .tab-item {
                padding: 7px 16px;
                font-size: 13px;
            }
            .live-strip .container {
                grid-template-columns: 1fr;
            }
            .banner-title {
                font-size: 26px;
            }
            .banner-desc {
                font-size: 14px;
            }
            .section-title {
                font-size: 24px;
            }
            .btn-cta-main {
                padding: 12px 28px;
                font-size: 14px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --dark: #0f172a;
            --body-bg: #f8fafc;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --white: #ffffff;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
            --shadow: 0 10px 30px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
            --transition: .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--body-bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        /* ===== Header ===== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            gap: 16px;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
        }

        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            color: #fff;
            border-radius: 12px;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
        }

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

        .header-search {
            display: flex;
            align-items: center;
            background: var(--body-bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 4px 6px 4px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: .9rem;
            width: 180px;
            color: var(--text);
        }

        .header-search button {
            border: none;
            background: var(--primary);
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .8rem;
            cursor: pointer;
            transition: background var(--transition);
        }

        .header-search button:hover {
            background: var(--primary-dark);
        }

        .header-cta {
            border-radius: 50px;
            padding: 8px 22px;
            font-weight: 600;
            font-size: .9rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .28);
        }

        .header-tabs {
            display: flex;
            gap: 6px;
            padding: 6px 0 12px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .header-tabs::-webkit-scrollbar {
            display: none;
        }

        .tab-item {
            padding: 7px 18px;
            border-radius: 50px;
            font-size: .88rem;
            font-weight: 600;
            color: var(--text-muted);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .tab-item:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .tab-item.active {
            color: var(--primary);
            background: var(--primary-light);
            border-color: transparent;
            box-shadow: 0 2px 8px rgba(37, 99, 235, .12);
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 64px 0 56px;
            color: #fff;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .88), rgba(37, 99, 235, .72));
        }

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

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 18px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, .85);
            transition: color var(--transition);
        }

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

        .breadcrumb-nav i {
            font-size: .7rem;
        }

        .article-hero h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.35;
            max-width: 820px;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            font-size: .9rem;
            color: rgba(255, 255, 255, .85);
        }

        .article-hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-hero-meta .badge-category {
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 50px;
            font-size: .8rem;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 48px 0 20px;
        }

        .article-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            margin-bottom: 30px;
        }

        .article-body {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-top: 32px;
            margin-bottom: 14px;
            color: var(--dark);
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }

        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-top: 24px;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 16px;
            padding-left: 22px;
        }

        .article-body li {
            margin-bottom: 4px;
        }

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-light);
            padding: 14px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin-bottom: 16px;
            color: var(--dark);
            font-weight: 500;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--primary-dark);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 30px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-tags .tag {
            display: inline-block;
            background: var(--body-bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 5px 16px;
            font-size: .82rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: all var(--transition);
        }

        .article-tags .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .article-actions {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 24px;
        }

        .share-group {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .share-group span {
            font-size: .85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .85rem;
            background: var(--body-bg);
            border: 1px solid var(--border);
            color: var(--text-muted);
            transition: all var(--transition);
        }

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

        .not-found-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 60px 40px;
            text-align: center;
        }

        .not-found-card .nf-icon {
            font-size: 3.2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .not-found-card h1 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: sticky;
            top: 110px;
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 24px;
        }

        .sidebar-card-head {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .sidebar-card h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--dark);
            margin: 0;
        }

        .live-dot {
            width: 8px;
            height: 8px;
            background: #10b981;
            border-radius: 50%;
            position: relative;
            animation: pulse 1.6s infinite;
        }

        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(16, 185, 129, .5);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
            }
        }

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

        .live-list li {
            display: flex;
            gap: 12px;
            padding: 11px 0;
            border-bottom: 1px dashed var(--border);
        }

        .live-list li:last-child {
            border-bottom: none;
        }

        .live-time {
            color: var(--accent);
            font-size: .78rem;
            font-weight: 600;
            white-space: nowrap;
            background: var(--accent-light);
            border-radius: 4px;
            padding: 1px 8px;
            height: max-content;
        }

        .live-list p {
            font-size: .88rem;
            color: var(--text);
            margin: 0;
            line-height: 1.5;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud .tag {
            display: inline-block;
            background: var(--body-bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 5px 14px;
            font-size: .82rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: all var(--transition);
        }

        .tag-cloud .tag:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .post-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: .9rem;
        }

        .post-list li:last-child {
            border-bottom: none;
        }

        .post-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text);
            transition: color var(--transition);
        }

        .post-list a:hover {
            color: var(--primary);
        }

        .post-list a i {
            color: var(--primary);
            font-size: .7rem;
        }

        .sidebar-tip {
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            border: none;
            color: #fff;
            padding: 28px 24px;
            text-align: center;
        }

        .sidebar-tip h3 {
            color: #fff;
            margin-bottom: 8px;
        }

        .sidebar-tip p {
            font-size: .88rem;
            color: rgba(255, 255, 255, .9);
            margin-bottom: 16px;
        }

        .sidebar-tip .btn-light {
            border-radius: 50px;
            font-weight: 600;
            padding: 8px 24px;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 56px 0 20px;
            background: var(--white);
            border-top: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 6px;
            letter-spacing: -0.5px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: .95rem;
        }

        .related-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            height: 100%;
        }

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

        .related-card .thumb {
            position: relative;
            overflow: hidden;
            height: 160px;
        }

        .related-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .related-card:hover .thumb img {
            transform: scale(1.05);
        }

        .related-card .thumb .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            border-radius: 50px;
            padding: 4px 12px;
            font-size: .75rem;
        }

        .related-card .r-body {
            padding: 20px;
        }

        .related-card .r-body h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .related-card .r-body a:hover {
            color: var(--primary);
        }

        .related-card .r-body p {
            font-size: .85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .related-card .r-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 20px;
            border-top: 1px solid var(--border);
            font-size: .8rem;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 56px 0;
            background: var(--body-bg);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 22px 24px;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }

        .faq-item h3 {
            font-size: .98rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .faq-item h3 i {
            color: var(--primary);
            font-size: .85rem;
        }

        .faq-item p {
            font-size: .9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

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

        .cta-box {
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            border-radius: 24px;
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 240px;
        }

        .cta-content h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: -0.4px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .9);
            font-size: .95rem;
            margin: 0;
        }

        .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .cta-actions .btn-light {
            border-radius: 50px;
            font-weight: 700;
            padding: 12px 32px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 52px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: .88rem;
            line-height: 1.7;
            margin: 0;
            max-width: 340px;
        }

        .footer-links h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul a {
            color: #94a3b8;
            font-size: .88rem;
            transition: color var(--transition), padding-left var(--transition);
            display: inline-block;
        }

        .footer-links ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .82rem;
            color: #64748b;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .article-hero {
                padding: 48px 0 42px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-card {
                padding: 28px;
            }
            .sidebar {
                position: static;
                margin-top: 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .header-actions {
                width: 100%;
                justify-content: space-between;
            }
            .header-search {
                flex: 1;
            }
            .header-search input {
                width: 100%;
            }
            .article-hero {
                padding: 38px 0 34px;
            }
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .article-card {
                padding: 20px;
            }
            .related-section,
            .faq-section,
            .cta-section {
                padding: 40px 0;
            }
            .cta-box {
                padding: 34px 24px;
            }
            .cta-content h2 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-search input {
                width: 120px;
            }
            .article-hero h1 {
                font-size: 1.2rem;
            }
            .article-hero-meta {
                gap: 10px;
                font-size: .82rem;
            }
            .article-card {
                padding: 16px;
            }
            .article-body {
                font-size: .95rem;
            }
            .article-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 30px 20px;
            }
            .cta-box::after {
                display: none;
            }
            .cta-actions {
                justify-content: center;
            }
            .section-head h2 {
                font-size: 1.35rem;
            }
        }