/* roulang page: index */
:root {
  --primary: #4f46e5;
  --primary-light: #818cf8;
  --primary-dark: #3730a3;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --bg: #f8fafc;
  --white: #ffffff;
  --text: #0f172a;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-lg: 26px;
  --radius-pill: 999px;
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.08);
  --shadow-hover: 0 20px 45px rgba(2, 6, 23, 0.13);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --navbar-height: 74px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
.container { max-width: 1200px; }

/* ===== 悬浮胶囊导航 ===== */
.site-nav-wrapper {
  position: sticky;
  top: 16px;
  z-index: 1050;
  padding: 0 16px;
  pointer-events: none;
}
.site-navbar {
  pointer-events: auto;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 35px rgba(2, 6, 23, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.6);
  padding: 0 24px !important;
  min-height: var(--navbar-height);
  transition: var(--transition);
}
.site-navbar .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  letter-spacing: 0.3px;
}
.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 14px;
  color: var(--white);
  font-size: 1.05rem;
  box-shadow: 0 8px 18px rgba(79, 70, 229, 0.35);
}
.site-navbar .navbar-nav { gap: 6px; }
.site-navbar .nav-link {
  padding: 10px 20px !important;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light) !important;
  transition: var(--transition);
  white-space: nowrap;
}
.site-navbar .nav-link:hover {
  color: var(--primary) !important;
  background: rgba(79, 70, 229, 0.07);
  transform: translateY(-1px);
}
.site-navbar .nav-link.active {
  color: var(--white) !important;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}
.site-navbar .nav-link:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.4);
  outline-offset: 2px;
}
.navbar-toggler {
  border: none;
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(79, 70, 229, 0.08);
}
.navbar-toggler:focus { box-shadow: none; outline: 3px solid rgba(79, 70, 229, 0.3); }
.navbar-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%234f46e5' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 26px;
  height: 26px;
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  min-height: 650px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-color: #0f172a;
  margin-top: -88px;
  padding: 140px 0 80px;
  isolation: isolate;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(79, 70, 229, 0.72) 55%, rgba(245, 158, 11, 0.35) 100%);
}
.hero-content { max-width: 820px; margin: 0 auto; padding: 0 20px; }
.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);
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}
.hero-title {
  font-size: 3.4rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 18px;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.25);
}
.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.btn {
  border-radius: var(--radius-pill);
  padding: 12px 28px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 12px 24px rgba(2, 6, 23, 0.18); }
.btn:focus-visible { outline: 3px solid rgba(79, 70, 229, 0.45); outline-offset: 2px; }
.btn-primary {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}
.btn-primary:hover { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.7);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.15); border-color: var(--white); color: var(--white); }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  border-color: transparent;
}
.btn-accent:hover { box-shadow: 0 14px 30px rgba(245, 158, 11, 0.4); color: var(--white); transform: translateY(-3px); }
.hero-stats {
  display: flex;
  justify-content: center;
  gap: clamp(28px, 6vw, 70px);
  flex-wrap: wrap;
}
.stat-item { text-align: center; color: var(--white); }
.stat-num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.5px;
}
.stat-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 1px;
  margin-top: 4px;
}

/* ===== 板块通用 ===== */
.section { padding: 80px 0; }
.section.bg-light { background: #f1f5f9; }
.section-head { margin-bottom: 50px; }
.section-head.text-center { max-width: 680px; margin-left: auto; margin-right: auto; }
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.16);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.7;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 特色卡片 ===== */
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 38px 30px;
  height: 100%;
  border: 1px solid var(--border);
  box-shadow: 0 4px 14px rgba(2, 6, 23, 0.04);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(79, 70, 229, 0.2);
}
.feature-card:hover::after { transform: scaleX(1); }
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  font-size: 1.5rem;
  color: var(--primary);
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(129, 140, 248, 0.08));
  margin-bottom: 22px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: 0 10px 24px rgba(79, 70, 229, 0.3);
}
.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.feature-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 0;
}

/* ===== 分类入口 ===== */
.category-card {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 32px;
  color: var(--white);
  background: #0f172a;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.1) 0%, rgba(15, 23, 42, 0.75) 80%);
  transition: var(--transition);
}
.category-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); color: var(--white); }
.category-card:hover img { transform: scale(1.06); }
.category-card:hover::after { background: linear-gradient(180deg, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0.8) 82%); }
.category-body { position: relative; z-index: 2; }
.category-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
  margin-bottom: 12px;
}
.category-body h3 {
  font-size: 1.55rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
  color: var(--white);
}
.category-body p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 420px;
}
.category-link {
  font-weight: 600;
  color: var(--white);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.category-link i { transition: transform 0.3s; }
.category-card:hover .category-link i { transform: translateX(5px); }

/* ===== 最新资讯列表 ===== */
.news-list-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.news-list { display: flex; flex-direction: column; gap: 14px; }
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 26px;
  color: var(--text);
  box-shadow: 0 2px 10px rgba(2, 6, 23, 0.04);
  transition: var(--transition);
}
.news-item:hover {
  color: var(--text);
  border-color: rgba(79, 70, 229, 0.25);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.news-item:focus-visible { outline: 3px solid rgba(79, 70, 229, 0.4); outline-offset: 2px; }
.news-cat {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  flex-shrink: 0;
}
.news-title {
  flex: 1;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 0.3s;
}
.news-item:hover .news-title { color: var(--primary); }
.news-date {
  color: var(--text-light);
  font-size: 0.85rem;
  white-space: nowrap;
  flex-shrink: 0;
}
.empty-tip {
  text-align: center;
  padding: 50px 20px;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-light);
  font-size: 1rem;
}

/* ===== 流程区 ===== */
.process-wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 10px;
}
.process-step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 30px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: 0 4px 14px rgba(2, 6, 23, 0.04);
  transition: var(--transition);
  position: relative;
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.process-num {
  width: 62px;
  height: 62px;
  margin: 0 auto 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  font-size: 1.4rem;
  font-weight: 700;
  border-radius: 20px;
  box-shadow: 0 10px 22px rgba(79, 70, 229, 0.3);
}
.process-step h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.process-step p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== FAQ ===== */
.section-faq .accordion {
  max-width: 800px;
  margin: 0 auto;
}
.section-faq .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius) !important;
  overflow: hidden;
  margin-bottom: 14px;
  background: var(--white);
  box-shadow: 0 2px 8px rgba(2, 6, 23, 0.03);
  transition: var(--transition);
}
.section-faq .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(79, 70, 229, 0.25);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.08);
}
.section-faq .accordion-button {
  padding: 22px 26px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  background: var(--white);
  box-shadow: none;
  border-radius: var(--radius) !important;
  transition: var(--transition);
}
.section-faq .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234f46e5'%3e%3cpath fill-rule='evenodd' d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3e%3c/svg%3e");
  transition: transform 0.3s;
}
.section-faq .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: rgba(79, 70, 229, 0.04);
}
.section-faq .accordion-button:focus {
  z-index: 3;
  border-color: transparent;
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}
.section-faq .accordion-body {
  padding: 6px 26px 24px;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.8;
  border-top: 1px solid rgba(226, 232, 240, 0.5);
}

/* ===== CTA ===== */
.section-cta {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 80px 0;
  isolation: isolate;
}
.section-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(79, 70, 229, 0.75) 100%);
}
.cta-content { max-width: 640px; margin: 0 auto; color: var(--white); }
.cta-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--white);
}
.cta-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  margin-bottom: 30px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0b1020;
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}
.footer-main { padding-bottom: 50px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 18px;
}
.footer-brand .brand-badge {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: 0 8px 18px rgba(79, 70, 229, 0.35);
}
.site-footer p { font-size: 0.95rem; line-height: 1.7; color: rgba(255, 255, 255, 0.6); margin-bottom: 12px; }
.site-footer h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}
.site-footer h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.92rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.site-footer ul a:hover { color: var(--white); padding-left: 4px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: var(--white); border-color: var(--primary); }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p { margin: 0; font-size: 0.87rem; color: rgba(255, 255, 255, 0.4); }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .site-nav-wrapper { top: 8px; padding: 0 12px; }
  .site-navbar {
    border-radius: 24px;
    padding: 12px 20px !important;
  }
  .site-navbar .navbar-collapse {
    margin-top: 12px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
  }
  .site-navbar .nav-link { padding: 12px 18px !important; border-radius: 14px; }
  .hero-section { min-height: auto; margin-top: -96px; padding: 130px 0 70px; }
  .hero-title { font-size: 2.6rem; }
  .process-wrap { grid-template-columns: 1fr; max-width: 480px; margin-left: auto; margin-right: auto; }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.7rem; }
  .footer-main .col-lg-4 { margin-bottom: 24px; }
}
@media (max-width: 768px) {
  .hero-section { padding: 120px 0 60px; }
  .hero-title { font-size: 2.1rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-actions { gap: 12px; }
  .btn { padding: 10px 22px; font-size: 0.95rem; }
  .stat-num { font-size: 1.7rem; }
  .stat-label { font-size: 0.8rem; }
  .feature-card { padding: 28px 24px; }
  .news-item { flex-wrap: wrap; gap: 10px; padding: 18px 20px; }
  .news-title { flex: 1 1 100%; order: 3; white-space: normal; }
  .news-cat { order: 1; }
  .news-date { order: 2; margin-left: auto; }
  .category-card { min-height: 240px; padding: 26px; }
  .section-cta { padding: 60px 0; }
  .cta-content h2 { font-size: 1.6rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 576px) {
  .site-nav-wrapper { padding: 0 8px; }
  .brand-text { font-size: 1.05rem; }
  .hero-badge { font-size: 0.8rem; padding: 6px 14px; }
  .hero-title { font-size: 1.85rem; }
  .hero-stats { gap: 20px; }
  .section { padding: 48px 0; }
  .section-head { margin-bottom: 34px; }
  .section-title { font-size: 1.45rem; }
  .category-card { min-height: 220px; padding: 22px; }
  .category-body h3 { font-size: 1.3rem; }
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
    :root {
      --brand: #2563eb;
      --brand-2: #7c3aed;
      --brand-dark: #1e40af;
      --brand-light: #eff6ff;
      --accent: #f59e0b;
      --ink: #0f172a;
      --text: #334155;
      --muted: #64748b;
      --bg: #f8fafc;
      --card: #ffffff;
      --border: #e2e8f0;
      --radius-lg: 20px;
      --radius: 14px;
      --radius-sm: 8px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
      --shadow-md: 0 10px 30px rgba(15, 23, 42, .08);
      --shadow-lg: 0 24px 60px rgba(37, 99, 235, .16);
      --grad: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
      --grad-soft: linear-gradient(135deg, #eff6ff 0%, #f5f3ff 100%);
      --transition: all .3s cubic-bezier(.4, 0, .2, 1);
    }

    /* ========== 基础样式 ========== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    body.modal-open { padding-right: 0 !important; }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--brand); }
    button { background: none; border: none; cursor: pointer; }
    input, textarea, select { font-family: inherit; }
    ::selection { background: rgba(37, 99, 235, .18); color: var(--ink); }
    .container { max-width: 1200px; }

    /* ========== 通用板块 ========== */
    .section { padding: 84px 0; }
    .section-head { max-width: 680px; margin-bottom: 50px; }
    .section-eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--brand-light); color: var(--brand);
      font-size: .82rem; font-weight: 600; padding: 7px 16px;
      border-radius: 30px; letter-spacing: .04em; margin-bottom: 16px;
    }
    .section-eyebrow i { font-size: .72rem; }
    .section-title { font-size: clamp(1.7rem, 3.2vw, 2.3rem); font-weight: 800; color: var(--ink); line-height: 1.3; letter-spacing: -.01em; }
    .section-sub { color: var(--muted); font-size: 1.06rem; margin-top: 12px; }
    .text-gradient { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

    /* ========== 导航 ========== */
    .site-header { padding: 18px 0 0; position: relative; z-index: 1050; }
    .site-navbar {
      background: rgba(255, 255, 255, .85);
      -webkit-backdrop-filter: blur(16px);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(226, 232, 240, .75);
      border-radius: 60px;
      box-shadow: 0 8px 30px rgba(15, 23, 42, .06);
      padding: 10px 12px 10px 22px;
      transition: var(--transition);
    }
    .navbar-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.18rem; color: var(--ink); }
    .navbar-brand:hover { color: var(--ink); }
    .brand-badge {
      width: 40px; height: 40px; border-radius: 12px; background: var(--grad);
      display: inline-flex; align-items: center; justify-content: center;
      color: #fff; font-size: 1rem; box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
      flex: 0 0 40px;
    }
    .brand-text { letter-spacing: -.01em; }
    .site-navbar .nav-link {
      font-weight: 600; color: var(--text); padding: 8px 18px !important;
      border-radius: 30px; font-size: .95rem; position: relative;
    }
    .site-navbar .nav-link:hover { color: var(--brand); background: var(--brand-light); }
    .site-navbar .nav-link.active { background: var(--grad); color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, .28); }
    .navbar-toggler { border: none; padding: 8px 10px; border-radius: 12px; }
    .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(37, 99, 235, .2); }
    .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,23,42,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }

    @media (max-width: 991.98px) {
      .site-navbar { border-radius: 24px; padding: 10px 16px; }
      .site-navbar .navbar-collapse {
        background: #fff; border-radius: 20px; padding: 16px 8px;
        margin-top: 12px; border: 1px solid var(--border);
        box-shadow: var(--shadow-md);
      }
      .site-navbar .nav-link { padding: 10px 16px !important; }
      .site-navbar .nav-link.active { background: var(--brand-light); color: var(--brand); box-shadow: none; }
    }

    /* ========== 分类 Hero ========== */
    .category-hero {
      position: relative;
      padding: 76px 0 84px;
      margin-top: 8px;
      color: #fff;
      background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
      overflow: hidden;
    }
    .category-hero::before {
      content: '';
      position: absolute; inset: 0;
      background: linear-gradient(120deg, rgba(11, 18, 32, .9) 0%, rgba(37, 99, 235, .66) 55%, rgba(124, 58, 237, .48) 100%);
    }
    .category-hero .container { position: relative; z-index: 2; }
    .hero-breadcrumb { display: flex; align-items: center; gap: 10px; font-size: .9rem; opacity: .85; margin-bottom: 30px; flex-wrap: wrap; }
    .hero-breadcrumb a { display: inline-flex; align-items: center; gap: 6px; }
    .hero-breadcrumb a:hover { color: #fff; opacity: 1; }
    .hero-breadcrumb .sep { font-size: .7rem; opacity: .6; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .28);
      padding: 8px 18px; border-radius: 40px; font-size: .85rem; font-weight: 600;
      backdrop-filter: blur(6px); margin-bottom: 20px; letter-spacing: .03em;
    }
    .hero-title { font-size: clamp(2.1rem, 5vw, 3.2rem); font-weight: 900; line-height: 1.2; letter-spacing: -.02em; margin-bottom: 18px; text-shadow: 0 2px 20px rgba(0, 0, 0, .15); }
    .hero-desc { font-size: 1.14rem; line-height: 1.85; max-width: 620px; opacity: .94; margin-bottom: 30px; }
    .hero-meta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }
    .btn { font-weight: 600; border-radius: 40px; transition: var(--transition); }
    .btn:focus { box-shadow: 0 0 0 4px rgba(37, 99, 235, .22); outline: none; }
    .btn-white { background: #fff; color: var(--ink); border: 1px solid transparent; padding: 12px 26px; }
    .btn-white:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 0, 0, .18); color: var(--ink); }
    .btn-ghost { background: rgba(255, 255, 255, .12); color: #fff; border: 1px solid rgba(255, 255, 255, .5); padding: 12px 26px; backdrop-filter: blur(6px); }
    .btn-ghost:hover { background: rgba(255, 255, 255, .22); color: #fff; transform: translateY(-2px); }
    .hero-stats { border-top: 1px solid rgba(255, 255, 255, .22); padding-top: 32px; }
    .hero-stat { text-align: center; }
    .hero-stat .num { display: block; font-size: 1.9rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.25; }
    .hero-stat .label { font-size: .86rem; opacity: .82; margin-top: 4px; display: block; }

    /* ========== 评测维度 ========== */
    .criteria-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px 26px;
      height: 100%;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }
    .criteria-card::after {
      content: '';
      position: absolute; right: -40px; top: -40px;
      width: 110px; height: 110px; border-radius: 50%;
      background: var(--grad-soft); opacity: 0; transition: var(--transition);
    }
    .criteria-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .3); }
    .criteria-card:hover::after { opacity: 1; }
    .criteria-icon {
      width: 56px; height: 56px; border-radius: 16px;
      background: var(--grad); color: #fff; font-size: 1.3rem;
      display: inline-flex; align-items: center; justify-content: center;
      box-shadow: 0 8px 20px rgba(37, 99, 235, .28); margin-bottom: 20px;
      position: relative; z-index: 1;
    }
    .criteria-title { font-size: 1.15rem; font-weight: 700; color: var(--ink); margin-bottom: 8px; position: relative; z-index: 1; }
    .criteria-text { font-size: .94rem; color: var(--muted); position: relative; z-index: 1; margin-bottom: 0; }

    /* ========== 精选评测卡片 ========== */
    .featured-section { background: var(--grad-soft); }
    .article-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, .25); }
    .card-thumb { position: relative; height: 192px; overflow: hidden; }
    .card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
    .article-card:hover .card-thumb img { transform: scale(1.07); }
    .card-thumb::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, .32)); }
    .card-tag {
      position: absolute; top: 14px; left: 14px; z-index: 2;
      background: rgba(255, 255, 255, .92); color: var(--brand);
      font-size: .78rem; font-weight: 700; padding: 5px 13px;
      border-radius: 20px; backdrop-filter: blur(6px);
      box-shadow: 0 4px 12px rgba(15, 23, 42, .1); letter-spacing: .02em;
    }
    .card-body { padding: 22px 22px 20px; display: flex; flex-direction: column; flex: 1; }
    .card-title { font-size: 1.08rem; font-weight: 700; color: var(--ink); line-height: 1.5; margin-bottom: 10px; transition: var(--transition); }
    .article-card:hover .card-title { color: var(--brand); }
    .card-excerpt { font-size: .9rem; color: var(--muted); margin-bottom: 18px; flex: 1; }
    .card-meta { display: flex; align-items: center; gap: 16px; font-size: .82rem; color: var(--muted); border-top: 1px dashed var(--border); padding-top: 14px; }
    .card-meta i { font-size: .78rem; color: var(--brand); }

    /* ========== 评测流程 ========== */
    .process-step {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      height: 100%;
      position: relative;
      transition: var(--transition);
    }
    .process-step:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .step-num {
      font-size: .8rem; font-weight: 800; letter-spacing: .08em;
      color: var(--brand); background: var(--brand-light);
      display: inline-block; padding: 4px 14px; border-radius: 20px;
      margin-bottom: 20px;
    }
    .step-icon {
      width: 50px; height: 50px; border-radius: 14px; font-size: 1.2rem;
      background: var(--grad-soft); color: var(--brand);
      display: inline-flex; align-items: center; justify-content: center;
      margin-bottom: 18px;
    }
    .step-title { font-size: 1.1rem; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
    .step-text { font-size: .92rem; color: var(--muted); margin-bottom: 0; }

    /* ========== 数据横条 ========== */
    .data-bar {
      position: relative;
      background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #4c1d95 100%);
      border-radius: var(--radius-lg);
      padding: 54px 40px;
      color: #fff;
      overflow: hidden;
    }
    .data-bar::before {
      content: '';
      position: absolute; inset: 0;
      background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
      opacity: .14;
    }
    .data-bar .container-position { position: relative; z-index: 1; }
    .data-item { text-align: center; padding: 10px 0; }
    .data-num { font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight: 800; display: block; line-height: 1.2; }
    .data-num span { color: var(--accent); }
    .data-label { font-size: .9rem; opacity: .78; display: block; margin-top: 6px; }

    /* ========== 推荐列表 ========== */
    .guide-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 26px 30px;
      transition: var(--transition);
    }
    .guide-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: rgba(37, 99, 235, .28); }
    .guide-item { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
    .guide-index {
      width: 52px; height: 52px; flex: 0 0 52px;
      background: var(--grad-soft); color: var(--brand);
      border-radius: 14px; font-size: 1.2rem; font-weight: 800;
      display: inline-flex; align-items: center; justify-content: center;
    }
    .guide-info { flex: 1; min-width: 220px; }
    .guide-title { font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-bottom: 4px; transition: var(--transition); }
    .guide-card:hover .guide-title { color: var(--brand); }
    .guide-desc { font-size: .88rem; color: var(--muted); margin-bottom: 0; }
    .guide-link {
      background: var(--brand-light); color: var(--brand);
      width: 44px; height: 44px; border-radius: 50%;
      display: inline-flex; align-items: center; justify-content: center;
      font-size: .9rem; transition: var(--transition); flex: 0 0 44px;
    }
    .guide-link:hover { background: var(--grad); color: #fff; transform: rotate(-45deg); box-shadow: 0 8px 18px rgba(37, 99, 235, .3); }

    /* ========== FAQ ========== */
    .faq-section { background: var(--grad-soft); }
    .accordion-item {
      background: var(--card);
      border: 1px solid var(--border) !important;
      border-radius: var(--radius) !important;
      overflow: hidden;
      margin-bottom: 16px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .accordion-item:has(.accordion-button:not(.collapsed)) { border-color: rgba(37, 99, 235, .4) !important; box-shadow: var(--shadow-md); }
    .accordion-button {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1rem;
      color: var(--ink);
      background: var(--card);
      border: none;
    }
    .accordion-button:focus { box-shadow: none; border: none; }
    .accordion-button:not(.collapsed) { background: var(--card); color: var(--brand); box-shadow: none; }
    .accordion-button::after {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232563eb'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    }
    .accordion-body { padding: 4px 24px 22px; color: var(--muted); font-size: .95rem; line-height: 1.85; }

    /* ========== CTA ========== */
    .cta-box {
      background: var(--grad);
      border-radius: var(--radius-lg);
      padding: 58px 46px;
      color: #fff;
      position: relative;
      overflow: hidden;
      box-shadow: 0 30px 70px rgba(37, 99, 235, .3);
    }
    .cta-box::before {
      content: '';
      position: absolute; right: -90px; top: -90px;
      width: 260px; height: 260px; border-radius: 50%;
      background: rgba(255, 255, 255, .12);
    }
    .cta-box::after {
      content: '';
      position: absolute; left: -60px; bottom: -110px;
      width: 220px; height: 220px; border-radius: 50%;
      background: rgba(255, 255, 255, .08);
    }
    .cta-box .container { position: relative; z-index: 1; }
    .cta-title { font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 800; margin-bottom: 12px; letter-spacing: -.01em; }
    .cta-desc { opacity: .92; font-size: 1.02rem; max-width: 540px; margin-bottom: 28px; }
    .cta-form { display: flex; gap: 10px; flex-wrap: wrap; max-width: 560px; }
    .cta-form .form-control {
      border-radius: 40px; border: 1px solid rgba(255, 255, 255, .5);
      background: rgba(255, 255, 255, .16); color: #fff;
      padding: 13px 22px; flex: 1; min-width: 220px; backdrop-filter: blur(4px);
    }
    .cta-form .form-control::placeholder { color: rgba(255, 255, 255, .75); }
    .cta-form .form-control:focus { background: rgba(255, 255, 255, .24); border-color: #fff; box-shadow: 0 0 0 4px rgba(255, 255, 255, .2); color: #fff; }
    .cta-form .btn-submit { background: #fff; color: var(--brand); padding: 13px 30px; font-weight: 700; }
    .cta-form .btn-submit:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(0, 0, 0, .18); color: var(--brand-dark); }

    /* ========== 页脚 ========== */
    .site-footer { background: #0b1220; color: #94a3b8; padding: 70px 0 0; }
    .site-footer h4 { color: #e2e8f0; font-size: 1rem; font-weight: 700; margin-bottom: 18px; letter-spacing: .02em; }
    .site-footer p { font-size: .92rem; }
    .site-footer a { color: #94a3b8; font-size: .92rem; }
    .site-footer a:hover { color: #fff; padding-left: 3px; }
    .footer-brand { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
    .footer-social { display: flex; gap: 10px; margin-top: 20px; }
    .footer-social a {
      width: 40px; height: 40px; border-radius: 12px;
      background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .1);
      display: inline-flex; align-items: center; justify-content: center;
      color: #cbd5e1; font-size: .95rem; transition: var(--transition);
    }
    .footer-social a:hover { background: var(--brand); color: #fff; padding-left: 0; transform: translateY(-3px); }
    .footer-brand .brand-badge { width: 42px; height: 42px; flex: 0 0 42px; }
    .site-footer ul { list-style: none; padding: 0; margin: 0; }
    .site-footer ul li { margin-bottom: 10px; }
    .site-footer ul li a { display: inline-flex; align-items: center; gap: 6px; }
    .site-footer ul li a i { color: var(--brand); font-size: .68rem; }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .1);
      margin-top: 56px;
      padding: 22px 0;
      font-size: .85rem;
      text-align: center;
      color: #64748b;
    }
    .footer-bottom p { margin-bottom: 4px; }

    /* ========== 响应式 ========== */
    @media (max-width: 991.98px) {
      .section { padding: 64px 0; }
      .category-hero { padding: 58px 0 66px; }
      .hero-stats { margin-top: 8px; }
      .cta-box { padding: 44px 30px; }
    }
    @media (max-width: 767.98px) {
      .section { padding: 52px 0; }
      .section-head { margin-bottom: 34px; }
      .category-hero { padding: 46px 0 56px; border-radius: 0; }
      .hero-desc { font-size: 1.02rem; }
      .hero-meta .btn { width: 100%; }
      .data-bar { padding: 42px 24px; }
      .guide-item { gap: 14px; }
      .cta-box { padding: 38px 24px; }
      .footer-brand { font-size: 1.1rem; }
    }
    @media (max-width: 520px) {
      .hero-stat .num { font-size: 1.55rem; }
      .hero-breadcrumb { font-size: .82rem; }
      .brand-text { font-size: 1.04rem; }
      .card-thumb { height: 170px; }
      .guide-index { width: 44px; height: 44px; flex-basis: 44px; font-size: 1rem; }
      .guide-link { width: 38px; height: 38px; flex-basis: 38px; }
      .cta-form .btn-submit { width: 100%; }
    }

/* roulang page: article */
:root {
  --brand: #2563eb;
  --brand-rgb: 37, 99, 235;
  --brand-deep: #1e40af;
  --accent: #0ea5e9;
  --accent-rgb: 14, 165, 233;
  --dark: #0f172a;
  --dark-rgb: 15, 23, 42;
  --muted: #64748b;
  --body-bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
  --section-space: 5.5rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--body-bg);
  color: #1e293b;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; }
a { color: var(--brand); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-deep); }
:focus-visible {
  outline: 3px solid rgba(var(--brand-rgb), .35);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ==== 悬浮胶囊导航 ==== */
.site-header {
  position: sticky;
  top: 12px;
  z-index: 1030;
  padding: 14px 12px 0;
  margin-bottom: -62px;
}
.navbar.site-navbar {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(226, 232, 240, 0.8);
  border-radius: 100px;
  box-shadow: 0 10px 32px rgba(15, 23, 42, 0.08);
  padding: 0.45rem 0.5rem 0.45rem 1.2rem;
  transition: box-shadow .25s ease, background .25s ease;
}
.navbar.site-navbar:hover {
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.1);
}
.site-navbar .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--dark);
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: 0.3px;
  padding: 0;
}
.site-navbar .navbar-brand:hover { color: var(--dark); }
.brand-badge {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  border-radius: 12px;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(var(--brand-rgb), .25);
  flex-shrink: 0;
}
.site-navbar .nav-link {
  font-weight: 600;
  color: #334155;
  padding: 0.55rem 1.15rem !important;
  border-radius: 50px;
  margin: 0 2px;
  font-size: 0.96rem;
  transition: all .2s ease;
}
.site-navbar .nav-link:hover {
  color: var(--brand);
  background: rgba(var(--brand-rgb), .08);
}
.site-navbar .nav-link.active {
  color: #fff !important;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 4px 14px rgba(var(--brand-rgb), .28);
}
.navbar-toggler {
  border: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(var(--brand-rgb), .2);
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(37,99,235,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.4' d='M4 8h22M4 15h22M4 22h22'/%3e%3c/svg%3e");
  width: 1.4em;
  height: 1.4em;
}

/* ==== 文章页横幅 ==== */
.article-page-banner {
  position: relative;
  padding: 8.5rem 0 4.5rem;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(37, 99, 235, 0.82)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  border-radius: 0 0 34px 34px;
  overflow: hidden;
}
.breadcrumb-nav {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.72);
  letter-spacing: 0.2px;
}
.breadcrumb-nav a { color: rgba(255, 255, 255, 0.78); transition: color .2s; }
.breadcrumb-nav a:hover { color: #fff; }
.breadcrumb-nav .sep { margin: 0 0.55rem; opacity: 0.6; }
.breadcrumb-nav .current { color: rgba(255, 255, 255, 0.95); }
.page-title {
  color: #fff;
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.28;
  margin-bottom: 1rem;
  letter-spacing: 0.3px;
  max-width: 860px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.18);
}
.page-desc {
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.04rem;
  line-height: 1.8;
  max-width: 740px;
  margin-bottom: 1.7rem;
}
.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
  align-items: center;
}
.page-meta span {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 0.35rem 0.95rem;
  border-radius: 50px;
  backdrop-filter: blur(6px);
}
.page-meta i { margin-right: 0.4rem; opacity: 0.85; }

/* ==== 文章主体区域 ==== */
.article-section { padding: 4rem 0 5rem; }
.article-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 2.6rem;
  overflow: hidden;
}
.article-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.9rem;
}
.article-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: linear-gradient(135deg, rgba(var(--brand-rgb), .1), rgba(var(--accent-rgb), .1));
  color: var(--brand);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.4rem 1rem;
  border-radius: 50px;
}
.article-read-stat {
  color: var(--muted);
  font-size: 0.88rem;
}
.article-read-stat i { margin-right: 0.3rem; }

.article-body-content { color: #334155; }
.article-body-content p {
  font-size: 1.04rem;
  line-height: 1.95;
  color: #334155;
  margin-bottom: 1.4rem;
}
.article-body-content h2,
.article-body-content h3,
.article-body-content h4 {
  color: var(--dark);
  font-weight: 700;
  margin-top: 2.4rem;
  margin-bottom: 1rem;
  letter-spacing: 0.2px;
}
.article-body-content h2 { font-size: 1.55rem; }
.article-body-content h3 { font-size: 1.3rem; }
.article-body-content h4 { font-size: 1.13rem; }
.article-body-content ul,
.article-body-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.3rem;
}
.article-body-content ul li,
.article-body-content ol li {
  margin-bottom: 0.55rem;
  line-height: 1.85;
}
.article-body-content blockquote {
  border-left: 4px solid var(--brand);
  background: rgba(var(--brand-rgb), .05);
  padding: 1.1rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.9rem 0;
  color: var(--dark);
  font-size: 1.02rem;
}
.article-body-content blockquote p { margin-bottom: 0.4rem; }
.article-body-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin: 1.6rem 0;
}
.article-body-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(var(--brand-rgb), .4);
}
.article-body-content a:hover { color: var(--brand); }
.article-body-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6rem 0;
  font-size: 0.94rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.article-body-content th,
.article-body-content td {
  border: 1px solid var(--border);
  padding: 0.8rem 1rem;
  text-align: left;
}
.article-body-content th {
  background: var(--border-light);
  font-weight: 600;
  color: var(--dark);
}
.article-body-content pre {
  background: var(--dark);
  color: #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  overflow-x: auto;
  margin: 1.6rem 0;
  font-size: 0.9rem;
  line-height: 1.7;
}
.article-body-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ==== 标签 / 分享 / 作者 ==== */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin-top: 2.2rem;
}
.article-tags .tag-label {
  font-weight: 700;
  color: var(--dark);
  margin-right: 0.3rem;
  font-size: 0.92rem;
}
.article-tags a {
  background: var(--border-light);
  border-radius: 50px;
  padding: 0.36rem 0.95rem;
  font-size: 0.84rem;
  color: #475569;
  transition: all .2s;
}
.article-tags a:hover {
  background: rgba(var(--brand-rgb), .1);
  color: var(--brand);
}
.article-share {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  padding-top: 1.2rem;
}
.article-share .share-label {
  font-weight: 600;
  color: var(--dark);
  font-size: 0.94rem;
}
.share-actions { display: flex; gap: 0.5rem; }
.btn-share {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--border-light);
  color: #475569;
  font-size: 0.95rem;
  transition: all .25s ease;
}
.btn-share:hover {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(var(--brand-rgb), .3);
}
.author-box {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  background: linear-gradient(135deg, rgba(var(--brand-rgb), .05), rgba(var(--accent-rgb), .05));
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.6rem;
  margin-top: 1.8rem;
}
.author-avatar {
  width: 54px;
  height: 54px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  font-size: 1.2rem;
  border-radius: 16px;
  box-shadow: 0 6px 18px rgba(var(--brand-rgb), .28);
}
.author-info strong {
  display: block;
  color: var(--dark);
  font-size: 1.03rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}
.author-info p {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 0.35rem;
  line-height: 1.6;
}
.author-info a {
  font-size: 0.86rem;
  font-weight: 600;
}
.article-not-found {
  text-align: center;
  padding: 3.5rem 1.5rem;
}
.article-not-found i {
  font-size: 3.2rem;
  color: #cbd5e1;
  margin-bottom: 1rem;
}
.article-not-found h2 {
  font-size: 1.8rem;
  color: var(--dark);
  font-weight: 800;
  margin-bottom: 0.7rem;
}
.article-not-found p {
  color: var(--muted);
  margin-bottom: 1.6rem;
}

/* ==== 侧边栏 ==== */
.article-sidebar { position: sticky; top: 90px; }
.sidebar-widget {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 1.6rem 1.7rem;
  margin-bottom: 1.5rem;
}
.sidebar-widget .widget-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.sidebar-widget .widget-title i {
  color: var(--brand);
  font-size: 0.98rem;
}
.widget-info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.widget-info-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.68rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.92rem;
  gap: 0.5rem;
}
.widget-info-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.widget-info-list .label { color: var(--muted); flex-shrink: 0; }
.widget-info-list .value { color: var(--dark); font-weight: 600; text-align: right; }
.sidebar-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sidebar-links li { margin-bottom: 0.6rem; }
.sidebar-links li:last-child { margin-bottom: 0; }
.sidebar-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--border-light);
  border-radius: 12px;
  padding: 0.72rem 1rem;
  color: #334155;
  font-weight: 600;
  font-size: 0.93rem;
  transition: all .2s ease;
}
.sidebar-links a:hover {
  background: rgba(var(--brand-rgb), .1);
  color: var(--brand);
  transform: translateX(4px);
}
.sidebar-links a i:last-child { font-size: 0.8rem; opacity: 0.6; }
.widget-cover-card { padding: 0 0 1.5rem; overflow: hidden; }
.widget-cover-card .widget-cover-img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 0 0 0 0;
  display: block;
}
.widget-cover-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin: 1rem 1.5rem 0.5rem;
}
.widget-cover-card p {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0 1.5rem 1.1rem;
  line-height: 1.7;
}
.widget-cover-card .btn { margin: 0 1.5rem; width: calc(100% - 3rem); }
.widget-dark-card {
  background: linear-gradient(135deg, var(--dark), rgba(37, 99, 235, 0.85));
  border: 0;
  color: #fff;
}
.widget-dark-card .widget-title { color: #fff; }
.widget-dark-card .widget-title i { color: rgba(255, 255, 255, 0.85); }
.widget-dark-card p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}

/* ==== 相关推荐 ==== */
.related-section {
  padding: 4.5rem 0 5.5rem;
  background: var(--surface);
  border-top: 1px solid var(--border-light);
}
.section-head { text-align: center; margin-bottom: 3rem; }
.section-eyebrow {
  display: inline-block;
  background: rgba(var(--brand-rgb), .1);
  color: var(--brand);
  font-size: 0.84rem;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  margin-top: 0.9rem;
  margin-bottom: 0.5rem;
}
.section-head p {
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 560px;
  margin: 0 auto;
}
.related-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(var(--brand-rgb), .25);
}
.related-card-img {
  height: 200px;
  overflow: hidden;
  background: var(--border-light);
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-body { padding: 1.4rem 1.5rem 1.5rem; }
.related-cat {
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.related-card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin: 0.5rem 0 0.6rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3.2rem;
}
.related-card-body p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 0.85rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8rem;
}
.related-meta {
  font-size: 0.82rem;
  color: #94a3b8;
}
.empty-posts-card {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--border-light);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
}
.empty-posts-card i {
  font-size: 2.6rem;
  color: #94a3b8;
  margin-bottom: 0.8rem;
}
.empty-posts-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
}
.empty-posts-card p {
  color: var(--muted);
  margin-bottom: 1rem;
}

/* ==== CTA 区块 ==== */
.cta-section { padding: 4.5rem 0 5.5rem; }
.cta-panel {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(37, 99, 235, 0.76)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 4rem 2.5rem;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.cta-eyebrow {
  display: inline-block;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, 0.72);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.cta-panel h2 {
  color: #fff;
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.35;
}
.cta-panel p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto 1.9rem;
  font-size: 1rem;
  line-height: 1.8;
}
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.7rem; }

/* ==== 按钮 ==== */
.btn {
  border-radius: 50px;
  padding: 0.6rem 1.5rem;
  font-weight: 600;
  transition: all .25s ease;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  border: none;
  box-shadow: 0 6px 18px rgba(var(--brand-rgb), .28);
  color: #fff;
}
.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(var(--brand-rgb), .36);
  filter: brightness(1.05);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(var(--brand-rgb), .24); }
.btn-light { background: #fff; color: var(--dark); border: none; }
.btn-light:hover { background: #f1f5f9; color: var(--dark); transform: translateY(-2px); }
.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover {
  background: #fff;
  color: var(--dark);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-lg { padding: 0.8rem 2.1rem; border-radius: 50px; font-size: 1rem; }
.btn-sm { padding: 0.46rem 1.15rem; border-radius: 50px; font-size: 0.88rem; }

/* ==== 页脚 ==== */
.site-footer {
  background: var(--dark);
  color: #cbd5e1;
  padding: 4.5rem 0 0;
  font-size: 0.95rem;
}
.site-footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
  font-size: 1.28rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: 0.3px;
}
.site-footer .footer-brand .brand-badge {
  width: 38px;
  height: 38px;
}
.site-footer p {
  color: #94a3b8;
  line-height: 1.8;
  font-size: 0.92rem;
}
.site-footer h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
  letter-spacing: 0.3px;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer ul li { margin-bottom: 0.6rem; }
.site-footer ul a {
  color: #94a3b8;
  transition: all .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.9rem;
}
.site-footer ul a i { font-size: 0.7rem; opacity: 0.7; }
.site-footer ul a:hover {
  color: #fff;
  padding-left: 3px;
}
.footer-social { display: flex; gap: 0.7rem; margin-top: 1.2rem; }
.footer-social a {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  transition: all .25s ease;
  font-size: 0.95rem;
}
.footer-social a:hover {
  background: var(--brand);
  color: #fff;
  transform: translateY(-2px);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.4rem 0;
  margin-top: 3rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.84rem;
  color: #64748b;
}
.footer-bottom p { font-size: 0.84rem; color: #64748b; margin: 0; }

/* ==== 响应式 ==== */
@media (max-width: 991.98px) {
  .site-header { top: 8px; margin-bottom: -52px; padding: 10px 10px 0; }
  .navbar.site-navbar {
    border-radius: 24px;
    padding: 0.5rem 0.8rem;
  }
  .navbar-collapse {
    background: #fff;
    border-radius: 20px;
    padding: 0.8rem 0.6rem;
    margin-top: 0.75rem;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
    border: 1px solid var(--border);
  }
  .site-navbar .nav-link {
    padding: 0.7rem 1rem !important;
    border-radius: 12px;
    margin: 2px 0;
  }
  .article-sidebar { position: static; top: auto; margin-top: 2rem; }
  .page-title { font-size: 2rem; }
  .article-page-banner { padding: 7.5rem 0 4rem; }
  .cta-panel { padding: 3.2rem 1.8rem; }
  .cta-panel h2 { font-size: 1.7rem; }
}
@media (max-width: 767.98px) {
  :root { --section-space: 3.5rem; }
  .article-section { padding: 2.8rem 0 3.5rem; }
  .article-card { padding: 1.5rem; }
  .article-body-content p { font-size: 1rem; line-height: 1.85; }
  .article-page-banner { padding: 6.5rem 0 3.2rem; border-radius: 0 0 24px 24px; }
  .page-title { font-size: 1.7rem; }
  .page-desc { font-size: 0.96rem; }
  .page-meta { gap: 0.4rem 0.7rem; }
  .section-head h2 { font-size: 1.55rem; }
  .related-section { padding: 3.5rem 0 4rem; }
  .cta-section { padding: 3.5rem 0 4rem; }
  .cta-panel { padding: 2.8rem 1.3rem; border-radius: 22px; }
  .cta-panel h2 { font-size: 1.4rem; }
  .cta-actions .btn { width: 100%; max-width: 340px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .author-box { flex-direction: column; text-align: center; }
  .author-info p { max-width: 320px; margin-left: auto; margin-right: auto; }
}
@media (max-width: 575.98px) {
  .site-header { padding: 8px 8px 0; }
  .navbar.site-navbar { border-radius: 20px; }
  .navbar.site-navbar .navbar-brand { font-size: 1.02rem; }
  .brand-badge { width: 32px; height: 32px; font-size: 0.85rem; border-radius: 10px; }
  .site-navbar .nav-link { font-size: 0.92rem; }
  .article-head { flex-direction: column; align-items: flex-start; }
  .article-card { padding: 1.25rem; }
  .widget-cover-card .widget-cover-img { height: 130px; }
  .cta-panel h2 { font-size: 1.25rem; }
  .section-head h2 { font-size: 1.4rem; }
  .page-title { font-size: 1.5rem; }
  .page-desc { font-size: 0.92rem; }
  .page-meta span { font-size: 0.8rem; padding: 0.3rem 0.75rem; }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #3b5bfd;
            --primary-rgb: 59, 91, 253;
            --primary-dark: #1e40af;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-rgb: 245, 158, 11;
            --body-bg: #f6f8fc;
            --surface: #ffffff;
            --surface-muted: #eef2f9;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e9edf5;
            --radius-sm: 12px;
            --radius: 18px;
            --radius-lg: 28px;
            --shadow-sm: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.09);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.14);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
        }

        /* ========== 基础 Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background: var(--body-bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text);
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 .5rem;
        }
        p {
            margin: 0 0 1rem;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 通用辅助 ========== */
        .section-padding {
            padding: 88px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(var(--primary-rgb), .08);
            color: var(--primary);
            font-size: .85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 999px;
            letter-spacing: .04em;
            border: 1px solid rgba(var(--primary-rgb), .12);
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            letter-spacing: -.01em;
            margin-bottom: 14px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: relative;
            z-index: 100;
            padding: 0 16px;
            margin-top: 16px;
        }
        .site-navbar {
            position: sticky;
            top: 14px;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(226, 232, 240, .8);
            border-radius: 999px;
            box-shadow: 0 8px 30px rgba(15, 23, 42, .08);
            padding: 10px 26px;
            transition: var(--transition);
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.22rem;
            color: var(--text) !important;
        }
        .brand-badge {
            width: 40px;
            height: 40px;
            border-radius: 13px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 6px 16px rgba(var(--primary-rgb), .35);
            flex-shrink: 0;
        }
        .navbar .nav-link {
            font-weight: 600;
            color: var(--text-muted);
            padding: 9px 18px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .navbar .nav-link:hover,
        .navbar .nav-link:focus {
            color: var(--primary);
            background: rgba(var(--primary-rgb), .07);
        }
        .navbar .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 6px 18px rgba(var(--primary-rgb), .35);
        }
        .navbar-toggler {
            border: none;
            border-radius: 12px;
            padding: 8px 10px;
            background: rgba(var(--primary-rgb), .06);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(var(--primary-rgb), .25);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='%233b5bfd' stroke-width='2.5' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 22px;
            height: 22px;
        }

        /* ========== 分类 Hero ========== */
        .category-hero {
            position: relative;
            margin: 16px 16px 0;
            border-radius: var(--radius-lg);
            padding: 90px 0 100px;
            background: linear-gradient(135deg, rgba(15, 23, 42, .78), rgba(30, 64, 175, .62)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .25);
            border-radius: 999px;
            padding: 7px 18px;
            font-size: .9rem;
            font-weight: 600;
            letter-spacing: .04em;
            color: #fff;
            margin-bottom: 22px;
        }
        .category-hero h1 {
            color: #fff;
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            letter-spacing: -.02em;
            margin-bottom: 18px;
        }
        .category-hero p {
            color: rgba(255, 255, 255, .88);
            font-size: 1.12rem;
            max-width: 620px;
            margin-bottom: 30px;
        }
        .hero-actions .btn {
            margin-right: 10px;
            margin-bottom: 8px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 34px;
            color: rgba(255, 255, 255, .8);
            font-size: .95rem;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== 数据统计 ========== */
        .stats-section {
            padding: 0 16px;
            margin-top: -44px;
            position: relative;
            z-index: 5;
        }
        .stats-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 36px 24px 28px;
            border: 1px solid var(--border);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 8px 4px;
        }
        .stat-number {
            display: block;
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -.02em;
            line-height: 1.2;
        }
        .stat-label {
            display: block;
            color: var(--text-muted);
            font-size: .92rem;
            margin-top: 6px;
        }

        /* ========== 技巧分类卡片 ========== */
        .category-grid {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 64px 0 72px;
        }
        .cat-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: var(--body-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 26px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(var(--primary-rgb), .04), transparent 60%);
            opacity: 0;
            transition: var(--transition);
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(var(--primary-rgb), .25);
        }
        .cat-card:hover::before {
            opacity: 1;
        }
        .cat-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: #fff;
            margin-bottom: 20px;
            box-shadow: 0 8px 20px rgba(15, 23, 42, .12);
        }
        .cat-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cat-card p {
            color: var(--text-muted);
            font-size: .95rem;
            margin-bottom: 18px;
            flex: 1;
        }
        .cat-card .card-link {
            font-weight: 600;
            font-size: .92rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .cat-card:hover .card-link {
            gap: 10px;
        }
        .bg-indigo {
            background: #5b74fd;
        }
        .bg-amber {
            background: #f59e0b;
        }
        .bg-green {
            background: #22c55e;
        }
        .bg-rose {
            background: #f43f5e;
        }
        .bg-sky {
            background: #0ea5e9;
        }
        .bg-violet {
            background: #8b5cf6;
        }

        /* ========== 热门技巧列表 ========== */
        .hot-tips {
            background: var(--body-bg);
        }
        .tips-list-wrap {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 12px;
        }
        .tip-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 26px 18px;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .tip-item:hover {
            background: rgba(var(--primary-rgb), .04);
        }
        .tip-item+.tip-item {
            border-top: 1px solid var(--border);
        }
        .tip-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: rgba(var(--primary-rgb), .25);
            line-height: 1;
            min-width: 40px;
            font-style: italic;
            letter-spacing: -.03em;
        }
        .tip-content {
            flex: 1;
        }
        .tip-content h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .tip-content h3 a {
            color: var(--text);
        }
        .tip-content h3 a:hover {
            color: var(--primary);
        }
        .tip-content p {
            color: var(--text-muted);
            font-size: .95rem;
            margin-bottom: 12px;
        }
        .tip-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .82rem;
        }
        .tip-meta .badge-tag {
            background: rgba(var(--primary-rgb), .08);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 12px;
            font-weight: 600;
        }
        .tip-meta .read-time {
            color: var(--text-muted);
            padding: 4px 0;
        }

        /* ========== 重点专题图文 ========== */
        .feature-tip {
            background: #0f172a;
            position: relative;
            overflow: hidden;
        }
        .feature-tip::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(var(--primary-rgb), .15);
            filter: blur(60px);
        }
        .feature-tip .feature-img-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .3);
            position: relative;
        }
        .feature-tip .feature-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .feature-tip .section-tag {
            background: rgba(var(--primary-rgb), .18);
            border-color: rgba(var(--primary-rgb), .3);
            color: #b3c0ff;
        }
        .feature-tip h2 {
            color: #fff;
            font-size: clamp(1.7rem, 3vw, 2.3rem);
            margin-bottom: 16px;
        }
        .feature-tip .feature-desc {
            color: rgba(255, 255, 255, .78);
            font-size: 1.05rem;
            margin-bottom: 24px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, .9);
            font-weight: 500;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
            padding: 10px 14px;
            border-radius: var(--radius-sm);
        }
        .feature-list li i {
            color: #7ee2a8;
            font-size: .9rem;
        }
        .feature-tip .btn-light {
            background: #fff;
            border-radius: 999px;
            border: none;
            font-weight: 600;
            color: #0f172a;
            padding: 12px 28px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
        }
        .feature-tip .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, .25);
        }
        .feature-tip .btn-outline-light {
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, .5);
            padding: 12px 28px;
            font-weight: 600;
        }
        .feature-tip .btn-outline-light:hover {
            background: rgba(255, 255, 255, .08);
            border-color: #fff;
            color: #fff;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--body-bg);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-accordion .accordion-button {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            background: var(--surface);
            padding: 20px 24px;
            border-radius: var(--radius) !important;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(var(--primary-rgb), .04);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(var(--primary-rgb), .15);
        }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' xmlns='http://www.w3.org/2000/svg'%3e%3cpath fill='none' stroke='%233b5bfd' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 6h8L8 10z'/%3e%3c/svg%3e");
            transition: var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(-180deg);
        }
        .faq-accordion .accordion-body {
            color: var(--text-muted);
            padding: 0 24px 22px;
            font-size: .98rem;
            line-height: 1.8;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 16px 16px 90px;
            background: var(--body-bg);
        }
        .cta-box {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 70px 30px;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, .82), rgba(59, 91, 253, .55)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .cta-box h2 {
            color: #fff;
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, .82);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-box .btn {
            border-radius: 999px;
            padding: 13px 34px;
            font-weight: 600;
            font-size: 1rem;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 40px;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-badge {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }
        .site-footer .footer-brand span {
            color: #fff;
        }
        .site-footer p {
            font-size: .95rem;
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }
        .footer-social a {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .7);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .04em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul a {
            color: rgba(255, 255, 255, .6);
            font-size: .95rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .site-footer ul a i {
            font-size: .65rem;
            opacity: .6;
        }
        .site-footer ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 30px;
            margin-top: 48px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .45);
        }
        .site-footer .footer-bottom p {
            margin: 0;
        }

        /* ========== 按钮统一定制 ========== */
        .btn {
            border-radius: 999px;
            padding: 11px 26px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 6px 20px rgba(var(--primary-rgb), .3);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: linear-gradient(135deg, #4a6bff, #2237a8);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(var(--primary-rgb), .4);
            color: #fff;
        }
        .btn-outline-light {
            border: 1.5px solid rgba(255, 255, 255, .6);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn:focus-visible,
        .nav-link:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(var(--primary-rgb), .4);
            outline-offset: 2px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .site-navbar {
                border-radius: 22px;
                padding: 12px 18px;
            }
            .navbar-collapse {
                background: rgba(255, 255, 255, .98);
                border-radius: 16px;
                padding: 12px;
                margin-top: 12px;
                border: 1px solid var(--border);
                box-shadow: var(--shadow);
            }
            .navbar .nav-link {
                padding: 10px 14px;
            }
            .category-hero {
                margin: 10px 10px 0;
                padding: 70px 0 80px;
            }
            .hero-actions .btn {
                margin-right: 8px;
            }
            .stats-card {
                grid-template-columns: repeat(2, 1fr);
                padding: 28px 18px;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            .site-footer {
                border-radius: 0;
            }
        }

        @media (max-width: 767.98px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .hero-meta {
                gap: 12px;
                font-size: .88rem;
            }
            .tip-item {
                flex-direction: column;
                gap: 10px;
                padding: 20px 14px;
            }
            .tip-number {
                font-size: 1.2rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-box {
                padding: 50px 20px;
            }
            .cta-box p {
                font-size: .98rem;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                padding: 0 8px;
                margin-top: 8px;
            }
            .site-navbar {
                padding: 10px 14px;
            }
            .brand-text {
                font-size: 1.05rem;
            }
            .category-hero {
                padding: 56px 0 68px;
                border-radius: 18px;
            }
            .stats-card {
                gap: 14px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .category-grid {
                padding: 48px 0 52px;
            }
            .cat-card {
                padding: 22px 18px;
            }
            .tip-meta {
                gap: 6px;
            }
            .feature-list li {
                font-size: .9rem;
                padding: 8px 12px;
            }
            .faq-accordion .accordion-button {
                font-size: .98rem;
                padding: 16px 18px;
            }
            .faq-accordion .accordion-body {
                padding: 0 18px 18px;
            }
            .cta-section {
                padding: 10px 10px 60px;
            }
            .cta-box {
                border-radius: 20px;
                padding: 40px 16px;
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .cta-box .btn {
                padding: 12px 26px;
                font-size: .95rem;
            }
        }