/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --primary: #0d2c4b;
  --primary-light: #17456e;
  --primary-soft: #e8f0f8;
  --accent: #12b3a8;
  --accent-dark: #0d958c;
  --accent-soft: #e0f5f2;
  --bg: #f5f8fb;
  --surface: #ffffff;
  --surface-tint: #f0f5fa;
  --text: #172a3a;
  --text-weak: #5c6f82;
  --border: #dde7f0;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(13,44,75,0.05);
  --shadow-md: 0 8px 30px rgba(13,44,75,0.08);
  --shadow-lg: 0 16px 48px rgba(13,44,75,0.12);
  --space-section: 96px;
  --container: 1200px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ============ 基础 Reset ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; display: block; height: auto; }
button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
ul, ol { list-style: none; }

/* ============ 容器 ============ */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 板块通用 ============ */
.section { padding: var(--space-section) 0; }
.section-tight { padding: 64px 0; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 999px;
  letter-spacing: .5px;
  margin-bottom: 16px;
}
.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary);
  letter-spacing: -.5px;
}
.section-sub {
  font-size: 16px;
  color: var(--text-weak);
  margin-top: 14px;
  line-height: 1.8;
}
.divider {
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #34d3c8);
  border-radius: 4px;
  margin: 20px auto 0;
}

/* ============ 顶部导航 ============ */
.site-header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -.3px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #34d3c8);
  display: inline-block;
  box-shadow: 0 0 0 5px var(--accent-soft);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-tint);
  padding: 5px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  padding: 8px 20px;
  border-radius: 999px;
  transition: all .25s ease;
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: rgba(255,255,255,.8); }
.nav-link.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(13,44,75,0.1);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 999px;
  transition: all .25s ease;
  box-shadow: 0 4px 14px rgba(18,179,168,0.3);
}
.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(18,179,168,0.4);
  color: #fff;
}
.nav-toggle {
  display: none;
  background: var(--surface-tint);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--primary);
  margin: 3px auto;
  border-radius: 2px;
  transition: all .3s ease;
}

/* ============ Hero 首屏 ============ */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(115deg, rgba(13,44,75,0.96) 0%, rgba(13,44,75,0.88) 40%, rgba(13,44,75,0.6) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(180deg, transparent, rgba(245,248,251,1));
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 80px 0 100px;
  max-width: 680px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #d3f5f1;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 24px;
  backdrop-filter: blur(6px);
}
.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero-title span {
  background: linear-gradient(90deg, #45e6db, #8ffaf0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 48px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 12px;
  transition: all .25s ease;
  cursor: pointer;
}
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 6px 20px rgba(18,179,168,0.35);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(18,179,168,0.45);
  color: #fff;
}
.btn-ghost {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
  transform: translateY(-2px);
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-meta-item strong {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
}
.hero-meta-item span {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
}

/* ============ 核心特性 ============ */
.features {
  background: var(--surface);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), #34d3c8);
  opacity: 0;
  transition: opacity .3s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 24px;
  background: var(--accent-soft);
  color: var(--accent-dark);
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-weak);
}

/* ============ 分类入口 ============ */
.categories {
  background: var(--bg);
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.cat-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.cat-thumb {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.cat-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.cat-card:hover .cat-thumb img { transform: scale(1.05); }
.cat-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(13,44,75,0.35));
}
.cat-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(13,44,75,0.82);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.cat-body {
  padding: 26px 26px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cat-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.cat-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 18px;
}
.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
  transition: gap .25s ease;
}
.cat-link:hover { gap: 10px; }

/* ============ 最新信息 CMS 列表 ============ */
.latest-news {
  background: var(--surface);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all .3s ease;
}
.news-card:hover {
  background: var(--surface);
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.news-cat {
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.news-date {
  font-size: 13px;
  color: var(--text-weak);
}
.news-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin-bottom: 14px;
}
.news-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-card:hover .news-more { gap: 8px; transition: gap .25s ease; }
.empty-tip {
  grid-column: 1/-1;
  text-align: center;
  color: var(--text-weak);
  font-size: 15px;
  padding: 60px 20px;
  background: var(--surface-tint);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
}

/* ============ 数据指标 ============ */
.stats {
  background: linear-gradient(135deg, #0a2238 0%, #0d2c4b 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute;
  right: -100px;
  top: -100px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(18,179,168,0.15);
  filter: blur(40px);
}
.stats .section-title { color: #fff; }
.stats .section-sub { color: rgba(255,255,255,0.65); }
.stats .divider { background: linear-gradient(90deg, var(--accent), #45e6db); }
.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 52px;
}
.stat-card {
  text-align: center;
  padding: 36px 20px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(6px);
  transition: transform .3s ease;
}
.stat-card:hover { transform: translateY(-4px); }
.stat-num {
  font-size: 38px;
  font-weight: 800;
  background: linear-gradient(90deg, #45e6db, #8ffaf0);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 8px;
}

/* ============ 登录流程 ============ */
.steps {
  background: var(--bg);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}
.steps-grid::before {
  content: "";
  position: absolute;
  top: 38px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 8px, transparent 8px 16px);
  opacity: .3;
}
.step-card {
  text-align: center;
  padding: 30px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all .3s ease;
}
.step-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.step-num {
  position: relative;
  z-index: 2;
  width: 44px;
  height: 44px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 6px var(--accent-soft);
}
.step-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ============ FAQ ============ */
.faq {
  background: var(--surface);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s ease;
}
.faq-item:hover { border-color: var(--accent); }
.faq-item.open { border-color: var(--accent); }
.faq-question {
  padding: 20px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}
.faq-question h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.5;
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform .3s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 26px;
  max-height: 0;
  overflow: hidden;
  transition: all .35s ease;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 24px;
}

/* ============ CTA ============ */
.cta-section {
  background:
    linear-gradient(rgba(13,44,75,0.88), rgba(13,44,75,0.92)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 100px 0;
  text-align: center;
  color: #fff;
}
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta-inner h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 36px;
  line-height: 1.8;
}
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============ 页脚 ============ */
.site-footer {
  background: #081c30;
  color: rgba(255,255,255,0.6);
  padding: 60px 0 30px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
}
.footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-logo .logo-dot {
  box-shadow: 0 0 0 5px rgba(18,179,168,0.2);
}
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-nav a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color .25s ease;
}
.footer-nav a:hover { color: #45e6db; }
.footer-divider {
  width: 100%;
  max-width: 800px;
  height: 1px;
  background: rgba(255,255,255,0.1);
  margin: 10px 0;
}
.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  line-height: 1.8;
}
.footer-copy a { color: rgba(255,255,255,0.45); }
.footer-copy a:hover { color: #45e6db; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  :root { --space-section: 76px; }
  .hero-title { font-size: 42px; }
  .feature-card { padding: 32px 24px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --space-section: 60px; }
  .section-title { font-size: 28px; }
  .header-inner { height: 64px; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 16px;
    right: 16px;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 12px;
    gap: 4px;
    display: none;
    z-index: 99;
  }
  .main-nav.open { display: flex; }
  .nav-link {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .hero { min-height: auto; }
  .hero-inner { padding: 60px 0 80px; }
  .hero-title { font-size: 36px; }
  .hero-desc { font-size: 15px; }
  .features-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .cta-inner h2 { font-size: 28px; }
}

@media (max-width: 520px) {
  :root { --space-section: 48px; }
  .container { padding: 0 16px; }
  .section-title { font-size: 24px; }
  .section-sub { font-size: 14px; }
  .hero-title { font-size: 30px; }
  .hero-btns { flex-direction: column; }
  .btn { width: 100%; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .hero-meta { gap: 20px; }
  .footer-nav { gap: 16px; flex-direction: column; }
}

/* roulang page: category1 */
:root {
  --primary: #1677ff;
  --primary-dark: #0958d9;
  --primary-light: #e6f4ff;
  --accent: #13c2c2;
  --accent-light: #e6fffb;
  --bg: #f5f7fa;
  --bg-white: #ffffff;
  --bg-dark: #0f1c2e;
  --text: #263445;
  --text-weak: #697b8c;
  --text-light: #ffffff;
  --border: #e1e8f0;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(15, 28, 46, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 28, 46, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 28, 46, 0.12);
  --spacing-section: 80px;
  --spacing-section-sm: 48px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

ul, ol {
  list-style: none;
}

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

input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.15);
}

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

/* ===== Header ===== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 1px 4px rgba(15, 28, 46, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: opacity 0.3s;
}

.logo:hover {
  opacity: 0.82;
  color: var(--text);
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(22, 119, 255, 0.35);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  white-space: nowrap;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
  border-color: rgba(22, 119, 255, 0.18);
}

.nav-link.active {
  color: var(--primary);
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.1), rgba(19, 194, 194, 0.08));
  border-color: rgba(22, 119, 255, 0.3);
  font-weight: 600;
}

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

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-light);
  padding: 9px 22px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s;
  box-shadow: 0 4px 14px rgba(9, 88, 217, 0.3);
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(9, 88, 217, 0.4);
  color: var(--text-light);
  opacity: 0.96;
}

.header-cta:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(9, 88, 217, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 4px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Sub Hero ===== */
.sub-hero {
  position: relative;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a3a5a 60%, #1f4a5a 100%);
  padding: 64px 0 56px;
  overflow: hidden;
  isolation: isolate;
}

.sub-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  z-index: -1;
}

.sub-hero::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(19, 194, 194, 0.25) 0%, transparent 70%);
  z-index: -1;
}

.sub-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.sub-hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #e8f4ff;
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  backdrop-filter: blur(4px);
}

.sub-hero h1 {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-light);
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.sub-hero h1 span {
  background: linear-gradient(120deg, #66b3ff, #4dd6d6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sub-hero .sub-title {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 640px;
  line-height: 1.8;
  margin-top: 8px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
}

.breadcrumb a {
  color: var(--text-weak);
  transition: color 0.3s;
}

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

.breadcrumb .sep {
  opacity: 0.4;
}

.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
}

/* ===== Sections ===== */
.page-main {
  padding: var(--spacing-section-sm) 0 var(--spacing-section);
}

.section {
  margin-bottom: var(--spacing-section-sm);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  position: relative;
  padding-bottom: 12px;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.section-title.light {
  color: var(--text-light);
}

.section-title.light::after {
  background: linear-gradient(90deg, rgba(255,255,255,0.8), rgba(255,255,255,0.3));
}

.section-desc {
  color: var(--text-weak);
  font-size: 16px;
  line-height: 1.8;
  max-width: 560px;
}

/* ===== Cards Grid ===== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ===== Login Steps Card ===== */
.login-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s;
}

.login-card:hover {
  transform: translateY(-6px);
  border-color: rgba(22, 119, 255, 0.3);
  box-shadow: var(--shadow-md);
}

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

.login-card .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.login-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.login-card p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.75;
}

.login-card .link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 16px;
  transition: gap 0.3s;
}

.login-card .link-more:hover {
  gap: 10px;
}

/* ===== Method Cards ===== */
.method-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 28px 24px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.method-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(22, 119, 255, 0.25);
}

.method-card .icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
  color: var(--primary);
  background: var(--primary-light);
  transition: background 0.3s, color 0.3s;
}

.method-card:hover .icon-wrap {
  background: var(--primary);
  color: #fff;
}

.method-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.method-card p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 14px;
}

.method-card .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.method-card .tag {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--bg);
  color: var(--text-weak);
  border: 1px solid var(--border);
}

/* ===== Steps List ===== */
.steps-list {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.step-item {
  display: flex;
  gap: 18px;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.step-item:last-child {
  border-bottom: none;
}

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

.step-item .step-index {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.step-item .step-content h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.step-item .step-content p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
}

.step-item .step-content p + p {
  margin-top: 6px;
}

.step-item .step-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-light);
  color: #08979c;
  font-size: 12px;
  font-weight: 500;
  padding: 2px 12px;
  border-radius: 12px;
  margin-top: 8px;
}

/* ===== Stats Panel ===== */
.stats-panel {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #132a3d 100%);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.stats-panel::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(22, 119, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.stat-item {
  text-align: center;
  position: relative;
}

.stat-item .stat-value {
  font-size: 40px;
  font-weight: 800;
  color: #e8f4ff;
  line-height: 1.3;
  background: linear-gradient(120deg, #fff 0%, #a8d8ff 50%, #4dd6d6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 6px;
  font-weight: 500;
}

/* ===== Trouble Cards ===== */
.trouble-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.trouble-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 28px;
  transition: box-shadow 0.3s, border-color 0.3s;
  display: flex;
  gap: 18px;
}

.trouble-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(22, 119, 255, 0.25);
}

.trouble-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent);
  background: var(--accent-light);
}

.trouble-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.trouble-content p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Feature Split ===== */
.feature-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.feature-split.reverse {
  grid-template-columns: 0.9fr 1.1fr;
  direction: ltr;
}

.feature-split .split-copy {
  direction: ltr;
}

.feature-split .split-sub {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.feature-split h3 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 18px;
  color: var(--text);
}

.feature-split p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 20px;
  max-width: 480px;
}

.split-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.split-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text);
  font-size: 14px;
}

.split-list li i {
  color: var(--accent);
  font-size: 16px;
  margin-top: 3px;
}

.feature-split .split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
  border: 1px solid var(--border);
  background: var(--bg-white);
}

.feature-split .split-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.feature-split .split-media:hover img {
  transform: scale(1.04);
}

.feature-split .split-media .media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 28, 46, 0.55) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}

/* ===== Faq ===== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

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

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: background 0.3s;
  cursor: pointer;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform 0.3s, background 0.3s, color 0.3s;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  display: none;
  padding: 0 28px 24px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ===== CTA Panel ===== */
.cta-panel {
  background: linear-gradient(120deg, #e6f4ff 0%, #d9f9f7 100%);
  border: 1px solid rgba(22, 119, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(19, 194, 194, 0.2) 0%, transparent 70%);
}

.cta-panel h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.cta-panel p {
  color: var(--text-weak);
  font-size: 16px;
  max-width: 520px;
  margin: 0 auto 28px;
}

.cta-panel .cta-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-panel .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 14px 40px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 6px 20px rgba(9, 88, 217, 0.3);
}

.cta-panel .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(9, 88, 217, 0.4);
  color: #fff;
}

.cta-panel .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-white);
  color: var(--text);
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.cta-panel .btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* ===== Notice ===== */
.notice-bar {
  background: var(--accent-light);
  border: 1px solid rgba(19, 194, 194, 0.3);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  color: #08979c;
  margin-bottom: 40px;
  line-height: 1.7;
}

.notice-bar i {
  font-size: 20px;
  flex-shrink: 0;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  padding: 64px 0 40px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  transition: color 0.3s;
}

.footer-logo:hover {
  color: #a8d8ff;
}

.footer-logo .logo-dot {
  background: linear-gradient(135deg, #66b3ff, #4dd6d6);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  padding: 6px 18px;
  border-radius: 20px;
  transition: all 0.3s;
  border: 1px solid transparent;
}

.footer-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

.footer-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  margin: 8px 0;
}

.footer-copy {
  font-size: 13px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.45);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --spacing-section: 60px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-panel {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

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

  .feature-split.reverse {
    grid-template-columns: 1fr;
  }

  .feature-split .split-media img {
    height: 260px;
  }

  .sub-hero h1 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 24px;
    gap: 4px;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    padding: 14px 18px;
    border-radius: 10px;
    border: 1px solid transparent;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .sub-hero {
    padding: 48px 0 40px;
  }

  .sub-hero h1 {
    font-size: 30px;
  }

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

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .stats-panel {
    grid-template-columns: 1fr 1fr;
    padding: 32px 20px;
    gap: 20px;
  }

  .stat-item .stat-value {
    font-size: 32px;
  }

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

  .step-item {
    padding: 20px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-desc {
    font-size: 14px;
  }

  .cta-panel {
    padding: 40px 24px;
  }

  .cta-panel h3 {
    font-size: 22px;
  }

  .cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-panel .btn-primary,
  .cta-panel .btn-secondary {
    justify-content: center;
  }

  .faq-question {
    font-size: 15px;
    padding: 18px 20px;
  }

  .faq-answer {
    padding: 0 20px 20px;
  }

  .notice-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .site-header .container {
    padding: 0 16px;
  }

  .logo {
    font-size: 17px;
  }

  .sub-hero h1 {
    font-size: 26px;
  }

  .sub-hero .hero-badge {
    font-size: 12px;
  }

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

  .stat-item .stat-value {
    font-size: 36px;
  }

  .login-card {
    padding: 24px 20px;
  }

  .method-card {
    padding: 22px 20px;
  }

  .trouble-card {
    flex-direction: column;
  }

  .feature-split h3 {
    font-size: 22px;
  }

  .footer-nav {
    gap: 4px;
  }

  .footer-nav a {
    font-size: 13px;
    padding: 6px 12px;
  }

  .cta-panel {
    padding: 32px 20px;
  }
}

/* roulang page: article */
:root {
  --primary: #1a3a5c;
  --primary-light: #2d5276;
  --primary-dark: #12293f;
  --accent: #14b8a6;
  --accent-light: #2dd4bf;
  --accent-dark: #0f8f80;
  --bg: #f8fafc;
  --bg-alt: #f1f5f9;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
  --shadow: 0 4px 18px rgba(0,0,0,0.06);
  --shadow-lg: 0 14px 40px rgba(0,0,0,0.10);
  --transition: all 0.3s ease;
  --container: 1200px;
}
*, *::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", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--accent);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button, input, select, textarea {
  font: inherit;
  color: inherit;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header ===== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.logo:hover {
  color: var(--primary);
}
.logo-dot {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  box-shadow: 0 2px 8px rgba(20, 184, 166, 0.3);
}
.logo-dot::after {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.9);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-weak);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  background: var(--bg-alt);
}
.nav-link.active {
  color: var(--accent-dark);
  background: rgba(20, 184, 166, 0.1);
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 24px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-size: 0.93rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(20, 184, 166, 0.3);
  transition: var(--transition);
  white-space: nowrap;
}
.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(20, 184, 166, 0.4);
  color: #fff;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 88px 0 72px;
  color: #fff;
  isolation: isolate;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 58, 92, 0.92), rgba(15, 40, 63, 0.78));
  z-index: -1;
}
.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 80%, rgba(20, 184, 166, 0.25), transparent 60%);
  z-index: -1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: #fff;
}
.breadcrumb .sep {
  opacity: 0.5;
}
.breadcrumb span:last-child {
  color: #fff;
  font-weight: 500;
}
.banner-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  max-width: 800px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.banner-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(4px);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ===== Article Main ===== */
.article-main-section {
  padding: 64px 0 80px;
  background: var(--bg);
}
.article-grid {
  max-width: 880px;
  margin: 0 auto;
}
.article-body-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 48px 56px;
  border: 1px solid var(--border);
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.article-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--primary);
  margin-bottom: 16px;
}
.article-info {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.info-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-weak);
}
.info-item i {
  color: var(--accent);
}
.article-content {
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.85;
  overflow-wrap: break-word;
}
.article-content p {
  margin-bottom: 1.4em;
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin: 1.8em 0 0.8em;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary);
  margin: 1.6em 0 0.6em;
}
.article-content ul, .article-content ol {
  margin: 0 0 1.4em;
  padding-left: 1.6em;
}
.article-content li {
  margin-bottom: 0.5em;
}
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-alt);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.4em 0;
  color: var(--text-weak);
  font-style: italic;
}
.article-content img {
  border-radius: var(--radius);
  margin: 1.5em 0;
  box-shadow: var(--shadow);
}
.article-content a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 3px 10px rgba(20, 184, 166, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(20, 184, 166, 0.4);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: rgba(20, 184, 166, 0.05);
}

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: #dc2626;
  margin: 0 auto 24px;
}
.not-found h2 {
  font-size: 1.8rem;
  color: var(--primary);
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-weak);
  margin-bottom: 32px;
}

/* ===== Recommend ===== */
.recommend-section {
  padding: 72px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 16px;
  flex-wrap: wrap;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(20, 184, 166, 0.1);
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.section-head h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0;
}
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.recommend-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.recommend-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(20, 184, 166, 0.3);
}
.recommend-cover {
  height: 180px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}
.recommend-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.25));
}
.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background: rgba(26, 58, 92, 0.85);
  backdrop-filter: blur(4px);
}
.recommend-body {
  padding: 22px 24px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.recommend-body h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.4;
}
.recommend-body p {
  font-size: 0.9rem;
  color: var(--text-weak);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 72px 0;
  background: var(--bg);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow);
  border-color: rgba(20, 184, 166, 0.4);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 10px;
}
.faq-question i {
  color: var(--accent);
  font-size: 1.1rem;
}
.faq-answer {
  font-size: 0.95rem;
  color: var(--text-weak);
  line-height: 1.7;
  padding-left: 32px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  position: relative;
  overflow: hidden;
  color: #fff;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(20, 184, 166, 0.2);
  filter: blur(60px);
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.cta-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}
.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-buttons .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.cta-buttons .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  color: var(--primary);
}
.cta-buttons .btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}
.cta-buttons .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 56px 0 32px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}
.footer-logo:hover {
  color: #fff;
}
.footer-logo .logo-dot {
  box-shadow: 0 2px 8px rgba(20, 184, 166, 0.4);
}
.footer-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-nav a {
  padding: 6px 16px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.92rem;
  border-radius: 6px;
  transition: var(--transition);
}
.footer-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
.footer-divider {
  width: 80px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin: 8px 0;
}
.footer-copy {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .banner-title {
    font-size: 2rem;
  }
  .article-body-card {
    padding: 36px 32px;
  }
  .recommend-grid {
    gap: 20px;
  }
}
@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
  }
  .nav-toggle {
    display: flex;
  }
  .header-cta {
    padding: 8px 18px;
    font-size: 0.88rem;
  }
  .page-banner {
    padding: 64px 0 48px;
  }
  .banner-title {
    font-size: 1.7rem;
  }
  .article-main-section {
    padding: 40px 0 60px;
  }
  .article-body-card {
    padding: 28px 20px;
    border-radius: 12px;
  }
  .article-title {
    font-size: 1.6rem;
  }
  .recommend-section,
  .faq-section {
    padding: 48px 0;
  }
  .section-head h2 {
    font-size: 1.5rem;
  }
  .recommend-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .cta-section {
    padding: 56px 0;
  }
  .cta-title {
    font-size: 1.6rem;
  }
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }
  .cta-buttons .btn {
    width: 100%;
    max-width: 300px;
  }
  .footer-nav {
    gap: 4px;
  }
  .footer-nav a {
    padding: 4px 12px;
    font-size: 0.88rem;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .logo {
    font-size: 1rem;
  }
  .logo-dot {
    width: 28px;
    height: 28px;
  }
  .header-cta {
    display: none;
  }
  .page-banner {
    padding: 48px 0 36px;
  }
  .banner-title {
    font-size: 1.45rem;
  }
  .article-grid {
    max-width: 100%;
  }
  .article-body-card {
    padding: 20px 16px;
  }
  .article-title {
    font-size: 1.35rem;
  }
  .article-info {
    gap: 10px;
    flex-direction: column;
    align-items: flex-start;
  }
  .article-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .article-actions .btn {
    width: 100%;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .faq-item {
    padding: 18px 16px;
  }
  .faq-question {
    font-size: 0.95rem;
  }
  .faq-answer {
    padding-left: 0;
    font-size: 0.9rem;
  }
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d9488;
            --primary-dark: #0f766e;
            --primary-light: #ccfbf1;
            --accent: #38bdf8;
            --bg: #f6f9f9;
            --bg-white: #ffffff;
            --bg-soft: #eef4f5;
            --text-main: #173042;
            --text-body: #40576a;
            --text-weak: #71889a;
            --border: #dde8e9;
            --border-light: #edf3f4;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 12px rgba(19, 78, 74, 0.06);
            --shadow-hover: 0 10px 30px rgba(13, 148, 136, 0.12);
            --space-section: 72px;
            --space-block: 40px;
            --max-width: 1200px;
            --transition: all 0.25s ease;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.12);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
        }

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

        .nav-link.active {
            color: var(--primary-dark);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            border-radius: 24px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.2);
        }

        .header-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(13, 148, 136, 0.3);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* 移动端导航 */
        @media (max-width: 900px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px 24px;
                gap: 10px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                width: 100%;
                text-align: center;
                padding: 12px;
            }

            .nav-toggle {
                display: flex;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0d1f29;
            color: #a8bfc8;
            padding: 56px 0 36px;
            margin-top: 40px;
        }

        .footer-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px 24px;
        }

        .footer-nav a {
            font-size: 14px;
            color: #8ba6b2;
            padding: 4px 0;
        }

        .footer-nav a:hover {
            color: var(--primary-light);
        }

        .footer-divider {
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            margin: 8px 0;
        }

        .footer-copy {
            font-size: 13px;
            text-align: center;
            color: #5d7a87;
            line-height: 1.8;
        }

        .footer-copy a {
            color: #8ba6b2;
        }

        /* ===== 内页 Banner ===== */
        .page-hero {
            position: relative;
            padding: 76px 0 64px;
            background:
                linear-gradient(135deg, rgba(13, 148, 136, 0.92), rgba(13, 148, 136, 0.72)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 280px;
            height: 280px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 24px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .page-hero p {
            font-size: 16px;
            max-width: 560px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            background: #fff;
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-weak);
        }

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

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

        .breadcrumb-list .sep {
            color: #c0cfd3;
        }

        /* ===== 资讯标签筛选 ===== */
        .category-chip {
            padding: 14px 0 4px;
        }

        .chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 18px;
            border-radius: 24px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
        }

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

        .chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(13, 148, 136, 0.22);
        }

        /* ===== 资讯主区 ===== */
        .section-block {
            padding: 48px 0 8px;
        }

        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 28px;
        }

        .section-header h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            position: relative;
            padding-left: 16px;
        }

        .section-header h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 4px;
        }

        .section-more {
            font-size: 14px;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .section-more:hover {
            color: var(--primary-dark);
        }

        /* 资讯网格 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .news-card {
            grid-column: span 4;
        }

        .news-card.large {
            grid-column: span 4;
        }

        @media (max-width: 992px) {
            .news-card,
            .news-card.large {
                grid-column: span 6;
            }
        }

        @media (max-width: 620px) {
            .news-card,
            .news-card.large {
                grid-column: span 12;
            }
        }

        .news-card-inner {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card-inner:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 148, 136, 0.2);
        }

        .news-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-soft);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .news-label {
            position: absolute;
            left: 12px;
            bottom: 12px;
            background: rgba(13, 148, 136, 0.92);
            color: #fff;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
        }

        .news-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 8px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-weak);
        }

        .news-meta .tag {
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 12px;
            padding: 1px 10px;
            font-weight: 500;
        }

        .news-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .news-title a:hover {
            color: var(--primary);
        }

        .news-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            flex: 1;
        }

        .hot-rank {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 6px;
        }

        .rank-num {
            font-size: 16px;
            font-weight: 800;
            color: var(--primary);
            min-width: 24px;
            text-align: center;
        }

        .rank-num.top-1 {
            color: #f59e0b;
        }
        .rank-num.top-2 {
            color: #94a3b8;
        }
        .rank-num.top-3 {
            color: #b45309;
        }

        /* ===== 数据统计条 ===== */
        .stat-strip {
            margin-top: 56px;
            padding: 32px 0;
            background: linear-gradient(135deg, #0b2e3a, #11404f);
            border-radius: var(--radius-lg);
            color: #fff;
        }

        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            padding: 0 24px;
        }

        .stat-item .num {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, #5eead4, #7dd3fc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        @media (max-width: 700px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        /* ===== 热门排行列表 ===== */
        .hot-list-wrap {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
            margin-top: 24px;
        }

        .hot-list-col {
            grid-column: span 4;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        @media (max-width: 992px) {
            .hot-list-col {
                grid-column: span 6;
            }
        }

        @media (max-width: 620px) {
            .hot-list-col {
                grid-column: span 12;
            }
        }

        .hot-list-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hot-list-title::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
        }

        .hot-list-item {
            display: flex;
            align-items: baseline;
            gap: 12px;
            padding: 11px 0;
            border-bottom: 1px dashed var(--border-light);
            font-size: 14px;
            color: var(--text-body);
        }

        .hot-list-item:last-child {
            border-bottom: none;
        }

        .hot-list-item a {
            flex: 1;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

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

        /* ===== 左侧资讯列表（内容列表） ===== */
        .content-list-wrapper {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .content-list-main {
            grid-column: span 8;
        }

        .content-list-aside {
            grid-column: span 4;
        }

        @media (max-width: 992px) {
            .content-list-main,
            .content-list-aside {
                grid-column: span 12;
            }
        }

        .content-list-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .content-list-item {
            display: flex;
            gap: 20px;
            padding: 22px 24px;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .content-list-item:hover {
            background: #f8fcfc;
        }

        .content-list-item:last-child {
            border-bottom: none;
        }

        .content-list-thumb {
            width: 180px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            aspect-ratio: 4/3;
        }

        .content-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-list-item:hover .content-list-thumb img {
            transform: scale(1.05);
        }

        .content-list-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .content-list-info h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }

        .content-list-info h3 a:hover {
            color: var(--primary);
        }

        .content-list-info p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .content-list-meta {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 4px;
        }

        @media (max-width: 620px) {
            .content-list-item {
                flex-direction: column;
                gap: 14px;
            }
            .content-list-thumb {
                width: 100%;
                aspect-ratio: 16/9;
            }
        }

        /* 侧栏卡片 */
        .aside-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 24px;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
        }

        .aside-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .aside-card-title::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
        }

        .aside-link-list li {
            list-style: none;
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-light);
        }

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

        .aside-link-list a {
            font-size: 14px;
            color: var(--text-body);
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .aside-link-list a::before {
            content: '›';
            color: var(--primary);
            font-weight: 700;
        }

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

        /* ===== 资讯说明板块 ===== */
        .info-panel {
            padding: 56px 0;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .info-item {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

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

        .info-icon {
            font-size: 32px;
            margin-bottom: 14px;
            display: block;
        }

        .info-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .info-item p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .info-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== CTA 区块 ===== */
        .cta-banner {
            margin: 24px 0 16px;
            position: relative;
            background:
                linear-gradient(135deg, rgba(13, 148, 136, 0.9), rgba(13, 148, 136, 0.7)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            overflow: hidden;
        }

        .cta-banner h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 520px;
            margin-bottom: 20px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            padding: 12px 30px;
            border-radius: 28px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
            transition: var(--transition);
        }

        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
        }

        .cta-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 12px;
        }

        @media (max-width: 620px) {
            .cta-banner {
                padding: 36px 24px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            padding: 20px 0 40px;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(13, 148, 136, 0.25);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* ===== 分页样式 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 36px;
        }

        .page-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            padding: 0 12px;
            transition: var(--transition);
        }

        .page-link:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .page-link.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== 通用 ===== */
        .text-center {
            text-align: center;
        }

        .mt-20 {
            margin-top: 20px;
        }

        .mt-40 {
            margin-top: 40px;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category2 */
:root {
            --primary: #1E56A0;
            --primary-dark: #164078;
            --primary-light: #E8F1FD;
            --secondary: #3A9D9D;
            --secondary-light: #E0F3F3;
            --bg: #F4F7FB;
            --bg-deep: #EAF0F8;
            --card: #FFFFFF;
            --text: #1A2433;
            --muted: #6B7A90;
            --border: #E2E9F2;
            --dark: #0F1E33;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(26, 36, 51, 0.06);
            --shadow-md: 0 10px 30px rgba(26, 36, 51, 0.08);
            --shadow-lg: 0 20px 50px rgba(26, 36, 51, 0.12);
            --transition: all 0.25s ease;
            --container: 1200px;
            --header-h: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ========== Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
        }

        .header-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 20px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .logo-dot {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            position: relative;
            flex-shrink: 0;
            display: inline-block;
        }

        .logo-dot::after {
            content: "";
            position: absolute;
            inset: 7px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.85);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: #ffffff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(30, 86, 160, 0.28);
        }

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

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 9px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(30, 86, 160, 0.2);
        }

        .header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(30, 86, 160, 0.32);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: var(--bg);
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            padding: 112px 0 104px;
            color: #ffffff;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 30, 51, 0.92), rgba(30, 86, 160, 0.78));
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.28);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 2px;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }

        .hero-content h1 {
            font-size: 48px;
            line-height: 1.2;
            margin-bottom: 18px;
            font-weight: 800;
            letter-spacing: 2px;
        }

        .hero-desc {
            font-size: 17px;
            opacity: 0.92;
            margin-bottom: 34px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: #ffffff;
            color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
        }

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.55);
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: 84px 0;
        }

        .section.bg-muted {
            background: #ffffff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-block;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: 34px;
            color: var(--text);
            margin-bottom: 14px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ========== 登录方式卡片 ========== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 36px 28px;
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
            border-color: var(--primary-light);
        }

        .method-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .method-card:hover .method-icon {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .method-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .method-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .method-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .method-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ========== 登录流程 ========== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .step {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 30px 26px;
            position: relative;
            transition: var(--transition);
        }

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

        .step-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            display: block;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .step p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ========== 登录技巧 ========== */
        .split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .split-content {
            padding-right: 10px;
        }

        .split-content .section-tag {
            margin-bottom: 10px;
        }

        .split-content h2 {
            font-size: 32px;
            line-height: 1.3;
            margin-bottom: 18px;
            font-weight: 700;
        }

        .split-content>p {
            color: var(--muted);
            margin-bottom: 24px;
            font-size: 15px;
        }

        .tip-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 13px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--text);
            line-height: 1.6;
        }

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

        .tip-list li::before {
            content: "✓";
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--secondary-light);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .split-media img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            transition: var(--transition);
        }

        .split-media img:hover {
            transform: scale(1.015);
            box-shadow: 0 24px 60px rgba(26, 36, 51, 0.16);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 880px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: transparent;
            transition: var(--transition);
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            flex-shrink: 0;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(135deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 26px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 600px;
            padding: 0 26px 24px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 84px 0;
            background-image: linear-gradient(135deg, rgba(15, 30, 51, 0.94), rgba(30, 86, 160, 0.9)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #ffffff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .cta-section p {
            opacity: 0.92;
            max-width: 620px;
            margin: 0 auto 32px;
            font-size: 16px;
            line-height: 1.7;
        }

        .btn-light {
            background: #ffffff;
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .btn-light:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--dark);
            color: #B0BED0;
            padding: 54px 0 42px;
        }

        .footer-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
        }

        .footer-logo .logo-dot {
            background: linear-gradient(135deg, #4D8FDB, var(--secondary));
        }

        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px 28px;
        }

        .footer-nav a {
            color: #B0BED0;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-nav a:hover {
            color: #ffffff;
        }

        .footer-divider {
            width: 100%;
            max-width: 640px;
            height: 1px;
            background: rgba(255, 255, 255, 0.14);
            margin: 6px 0;
        }

        .footer-copy {
            text-align: center;
            font-size: 13px;
            line-height: 1.9;
            color: #8EA0B6;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .split {
                gap: 40px;
            }
        }

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

            .section {
                padding: 64px 0;
            }

            .page-hero {
                padding: 84px 0 80px;
            }

            .hero-content h1 {
                font-size: 34px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .header-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-140%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.25s ease;
                border-radius: 0 0 var(--radius) var(--radius);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-link {
                padding: 13px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
                justify-content: center;
            }

            .grid-3 {
                grid-template-columns: 1fr;
            }

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

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

            .split-content {
                padding-right: 0;
            }

            .split-media img {
                aspect-ratio: 16 / 10;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .cta-section h2 {
                font-size: 27px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .logo {
                font-size: 17px;
            }

            .logo-dot {
                width: 28px;
                height: 28px;
                border-radius: 8px;
            }

            .logo-dot::after {
                inset: 6px;
                border-radius: 3px;
            }

            .page-hero {
                padding: 70px 0 64px;
            }

            .hero-content h1 {
                font-size: 27px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }

            .btn {
                width: 100%;
                padding: 14px 20px;
            }

            .section {
                padding: 52px 0;
            }

            .section-head h2 {
                font-size: 24px;
                letter-spacing: 0.5px;
            }

            .section-head p {
                font-size: 14px;
            }

            .card {
                padding: 28px 22px;
            }

            .step {
                padding: 24px 20px;
            }

            .split-content h2 {
                font-size: 25px;
            }

            .faq-question {
                padding: 17px 20px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 20px;
            }

            .faq-item.active .faq-answer {
                padding: 0 20px 20px;
            }

            .cta-section {
                padding: 60px 0;
            }

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

            .cta-section p {
                font-size: 14px;
            }

            .footer-nav {
                gap: 8px 18px;
            }

            .footer-nav a {
                font-size: 13px;
            }
        }