/* roulang page: index */
:root {
  --primary: #0d1b2e;
  --primary-light: #1b2d45;
  --accent: #c9a45c;
  --accent-light: #dbbd7e;
  --accent-dark: #b08d45;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #16233a;
  --text-muted: #5f6b7f;
  --border: #e3e7ec;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(13, 27, 46, 0.06);
  --shadow-lg: 0 14px 44px rgba(13, 27, 46, 0.12);
  --transition: all 0.25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 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; }
input { font-family: inherit; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0d1b2e;
  box-shadow: 0 4px 14px rgba(201, 164, 92, 0.35);
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(201, 164, 92, 0.4);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}
.btn-dark {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(13, 27, 46, 0.2);
}
.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn:focus-visible, a:focus-visible, input:focus-visible, button:focus-visible {
  outline: 3px solid rgba(201, 164, 92, 0.5);
  outline-offset: 2px;
}

/* Header 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 46, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0d1b2e;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 2px 10px rgba(201, 164, 92, 0.3);
}
.logo-text {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
}
.nav-menu a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 999px;
  transition: var(--transition);
}
.nav-menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.nav-menu a.active {
  color: #0d1b2e;
  background: var(--accent);
  font-weight: 600;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-search input {
  width: 180px;
  height: 40px;
  padding: 0 42px 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 14px;
  transition: var(--transition);
}
.nav-search input::placeholder { color: rgba(255, 255, 255, 0.5); }
.nav-search input:focus {
  width: 220px;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.16);
  outline: none;
}
.nav-search .search-btn {
  position: absolute;
  right: 4px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #0d1b2e;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-search .search-btn:hover { background: var(--accent-light); }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 20px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.menu-toggle:hover { background: rgba(255, 255, 255, 0.2); }

/* 移动端导航 */
.mobile-nav {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--primary);
  padding: 16px 24px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.mobile-nav.open { display: block; }
.mobile-nav .mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav .mobile-nav-links a {
  color: rgba(255, 255, 255, 0.85);
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 500;
  transition: var(--transition);
}
.mobile-nav .mobile-nav-links a:hover,
.mobile-nav .mobile-nav-links a.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-light);
}
.mobile-nav .mobile-nav-search {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.mobile-nav .mobile-nav-search input {
  flex: 1;
  height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 14px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(13,27,46,0.92), rgba(13,27,46,0.72)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  padding: 80px 0 100px;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; width: 100%; }
.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);
  padding: 7px 20px;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--accent-light);
  margin-bottom: 24px;
  backdrop-filter: blur(6px);
}
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 1px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.hero-sub {
  font-size: 18px;
  max-width: 620px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
  max-width: 720px;
}
.stat-item { text-align: left; }
.stat-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

/* 通用 section */
.section {
  padding: 96px 0;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: rgba(201,164,92,0.1);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.5px;
}
.section-head p {
  color: var(--text-muted);
  font-size: 16px;
  margin-top: 14px;
}

/* 特性卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(201,164,92,0.15), rgba(201,164,92,0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent-dark);
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 分类卡片 */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.category-card:hover img { transform: scale(1.04); }
.category-overlay {
  position: relative;
  z-index: 2;
  padding: 36px;
  width: 100%;
  background: linear-gradient(to top, rgba(13,27,46,0.88), rgba(13,27,46,0.3), transparent);
  color: #fff;
}
.category-overlay h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.category-overlay p {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  max-width: 360px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-light);
  margin-top: 12px;
  transition: var(--transition);
}
.category-link:hover { gap: 10px; }

/* 资讯列表 */
.news-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.news-card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: var(--transition);
}
.news-card:hover {
  background: #fff;
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.news-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.news-cat {
  font-size: 12px;
  font-weight: 600;
  background: rgba(201,164,92,0.12);
  color: var(--accent-dark);
  padding: 3px 12px;
  border-radius: 999px;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
}
.news-card h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--text);
  transition: var(--transition);
}
.news-card:hover h3 { color: var(--accent-dark); }
.news-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px;
  background: var(--bg);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 15px;
}

/* 流程 */
.steps-section {
  background: var(--primary);
  color: #fff;
}
.steps-section .section-head h2 { color: #fff; }
.steps-section .section-head p { color: rgba(255,255,255,0.7); }
.steps-section .section-eyebrow {
  background: rgba(255,255,255,0.12);
  color: var(--accent-light);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 20px;
}
.step-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}
.step-item:hover {
  background: rgba(255,255,255,0.09);
  transform: translateY(-5px);
}
.step-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent-light);
  opacity: 0.8;
  line-height: 1;
  margin-bottom: 14px;
}
.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

/* FAQ */
.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.accordion {
  list-style: none;
  border: none;
  background: transparent;
}
.accordion-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.accordion-item:hover { border-color: var(--accent); }
.accordion-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 17px;
  font-weight: 600;
  padding: 20px 24px;
  color: var(--text);
  background: transparent;
  border: none;
  transition: var(--transition);
}
.accordion-title::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 14px;
  color: var(--accent-dark);
  transition: transform 0.3s ease;
  margin-left: 12px;
}
.accordion-item.is-active .accordion-title::after {
  transform: rotate(180deg);
}
.accordion-title:hover { color: var(--accent-dark); }
.accordion-content {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.accordion-content p { margin: 0; }

/* CTA */
.cta-section {
  padding: 90px 0;
  background: linear-gradient(135deg, rgba(13,27,46,0.9), rgba(13,27,46,0.75)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  text-align: center;
}
.cta-inner {
  max-width: 640px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 页脚 */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo-text { font-size: 22px; }
.footer-brand p {
  font-size: 14px;
  margin-top: 16px;
  line-height: 1.7;
  max-width: 320px;
  color: rgba(255,255,255,0.55);
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom .domain {
  color: rgba(255,255,255,0.4);
  font-family: 'Consolas', monospace;
}

/* 响应式 */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-search { display: none; }
}
@media (max-width: 768px) {
  .nav-menu, .nav-right .btn-primary { display: none; }
  .menu-toggle { display: flex; }
  .hero { min-height: 520px; padding: 60px 0 80px; }
  .hero h1 { font-size: 36px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 48px; }
  .section { padding: 72px 0; }
  .section-head h2 { font-size: 28px; }
  .categories-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .header-inner { height: 64px; }
  .logo-text { font-size: 16px; }
  .logo-icon { width: 34px; height: 34px; font-size: 16px; }
  .mobile-nav { top: 64px; }
  .hero { min-height: 480px; padding: 48px 0 64px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 26px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .category-overlay { padding: 24px; }
  .category-overlay h3 { font-size: 19px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-inner h2 { font-size: 26px; }
  .cta-actions .btn { width: 100%; }
}

/* roulang page: article */
:root {
            --primary: #0f2a43;
            --primary-light: #1b3f63;
            --primary-dark: #081b2c;
            --accent: #d4a853;
            --accent-light: #e9c878;
            --accent-dark: #b08d3a;
            --bg: #f2f5fa;
            --bg-deep: #e8edf5;
            --card: #ffffff;
            --text: #16233a;
            --text-light: #5b6b82;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 36px rgba(15, 42, 67, 0.08);
            --shadow-hover: 0 20px 48px rgba(15, 42, 67, 0.14);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--primary);
            box-shadow: 0 4px 24px rgba(8, 27, 44, 0.35);
            padding: 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 74px;
            gap: 20px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent) 0%, #e8c06a 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary-dark);
            box-shadow: 0 4px 14px rgba(212, 168, 83, 0.4);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .nav-menu a {
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 18px;
            border-radius: 999px;
            transition: var(--transition);
            position: relative;
        }

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

        .nav-menu a.active {
            color: var(--primary-dark);
            background: var(--accent);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.4);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 999px;
            padding: 6px 6px 6px 16px;
            transition: var(--transition);
        }

        .nav-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 14px;
            width: 110px;
            transition: var(--transition);
        }

        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .nav-search button {
            background: var(--accent);
            border: none;
            border-radius: 999px;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            cursor: pointer;
            font-size: 14px;
            transition: var(--transition);
        }

        .nav-search button:hover {
            background: var(--accent-light);
            transform: scale(1.04);
        }

        .nav-btn {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 999px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.35);
        }

        .nav-btn:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 83, 0.45);
        }

        .menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, rgba(8, 27, 44, 0.9) 0%, rgba(15, 42, 67, 0.75) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 88px 0 64px;
            color: #fff;
            position: relative;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 75% 20%, rgba(212, 168, 83, 0.25) 0%, transparent 55%);
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.65);
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }

        .article-hero h1 {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 700;
            margin: 0 0 20px;
            max-width: 900px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 24px;
            align-items: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .article-meta .cate-badge {
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .article-meta i {
            margin-right: 6px;
            color: var(--accent-light);
        }

        /* ===== Article Main ===== */
        .article-main-section {
            padding: 64px 0 20px;
        }

        .article-main {
            align-items: flex-start;
        }

        .article-main .main-col {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            margin-bottom: 32px;
        }

        .article-cover {
            position: relative;
            overflow: hidden;
        }

        .article-cover img {
            width: 100%;
            height: auto;
            min-height: 220px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .article-cover::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(15, 42, 67, 0.1) 0%, transparent 40%);
            pointer-events: none;
        }

        .article-body {
            padding: 40px 44px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: #27364d;
        }

        .article-content p {
            margin-bottom: 20px;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--bg);
        }

        .article-content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--primary);
            margin: 28px 0 12px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: 0 8px 24px rgba(15, 42, 67, 0.1);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #fdf9f0;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: #5b6b82;
            font-style: italic;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-tags .tag {
            background: var(--bg);
            color: var(--primary);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

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

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }

        .article-share span {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }

        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
            color: var(--primary);
            font-size: 15px;
            transition: var(--transition);
        }

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

        /* ===== Sidebar ===== */
        .sidebar-col .side-card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px;
            margin-bottom: 24px;
        }

        .side-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .side-card h3 i {
            color: var(--accent);
        }

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

        .side-nav-list li {
            border-bottom: 1px solid var(--border);
        }

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

        .side-nav-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
            color: var(--text-light);
            font-size: 14px;
        }

        .side-nav-list a i {
            color: var(--accent);
            font-size: 12px;
        }

        .side-nav-list a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .side-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .side-tags a {
            background: var(--bg);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            color: var(--primary);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .side-tags a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .side-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius);
            padding: 32px 28px;
            color: #fff;
            text-align: center;
        }

        .side-cta h4 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .side-cta p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .side-cta .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 999px;
            padding: 10px 28px;
            font-weight: 600;
            font-size: 14px;
            display: inline-block;
            transition: var(--transition);
        }

        .side-cta .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 83, 0.4);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 48px 0 64px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-eyebrow {
            display: inline-block;
            background: rgba(212, 168, 83, 0.15);
            color: var(--accent-dark);
            border-radius: 999px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .section-head p {
            color: var(--text-light);
            margin-top: 10px;
            font-size: 15px;
        }

        .related-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-img {
            position: relative;
            overflow: hidden;
            height: 180px;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-card .card-img::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(15, 42, 67, 0.25) 0%, transparent 50%);
        }

        .card-cate {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            z-index: 2;
        }

        .related-card .card-body {
            padding: 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .related-card .card-body h3 a {
            color: var(--text);
        }

        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }

        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
        }

        .card-link {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-link i {
            transition: transform 0.3s;
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-deep);
            padding: 64px 0;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            box-shadow: 0 2px 12px rgba(15, 42, 67, 0.04);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(212, 168, 83, 0.4);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item[open] summary .faq-icon {
            background: var(--accent);
            color: var(--primary-dark);
            transform: rotate(45deg);
        }

        .faq-item .faq-content {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.2) 0%, transparent 70%);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.15) 0%, transparent 70%);
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 16px;
        }

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

        .btn-cta-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            border-radius: 999px;
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(212, 168, 83, 0.35);
        }

        .btn-cta-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(212, 168, 83, 0.5);
        }

        .btn-cta-ghost {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            border-radius: 999px;
            padding: 12px 34px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-cta-ghost:hover {
            border-color: var(--accent);
            color: var(--accent-light);
            background: rgba(212, 168, 83, 0.08);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .nav-logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
            margin: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-col a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.55);
            font-size: 15px;
            padding: 6px 0;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 6px;
        }

        .footer-col a i {
            font-size: 10px;
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 28px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom .domain {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom .domain i {
            color: var(--accent);
        }

        /* ===== Not Found ===== */
        .not-found-section {
            padding: 120px 0;
            text-align: center;
        }

        .not-found-card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 64px 48px;
            max-width: 640px;
            margin: 0 auto;
        }

        .not-found-card .not-found-icon {
            font-size: 56px;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .not-found-card h1 {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .not-found-card p {
            color: var(--text-light);
            margin-bottom: 28px;
        }

        .btn-home {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .btn-home:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 42, 67, 0.3);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .article-hero h1 {
                font-size: 32px;
            }

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

            .article-body {
                padding: 32px 32px;
            }
        }

        @media screen and (max-width: 768px) {
            .header-inner {
                min-height: 64px;
            }

            .nav-menu {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 20px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(8, 27, 44, 0.4);
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                border-bottom-left-radius: 16px;
                border-bottom-right-radius: 16px;
                z-index: 99;
            }

            .nav-menu.open {
                transform: translateY(0);
            }

            .nav-menu a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 10px;
            }

            .nav-actions {
                gap: 8px;
            }

            .nav-search {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .article-hero {
                padding: 56px 0 40px;
            }

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

            .article-main-section {
                padding: 32px 0 10px;
            }

            .article-body {
                padding: 24px;
            }

            .article-content {
                font-size: 15px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }

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

            .logo-text {
                font-size: 17px;
            }

            .article-hero h1 {
                font-size: 22px;
            }

            .article-meta {
                gap: 8px 14px;
                font-size: 13px;
            }

            .faq-item summary {
                padding: 16px;
                font-size: 15px;
            }

            .faq-item .faq-content {
                padding: 0 16px 16px;
            }

            .not-found-card {
                padding: 40px 24px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1e4fd8;
            --primary-dark: #173ea8;
            --primary-light: #e8effc;
            --accent: #f5a623;
            --accent-dark: #d4890f;
            --bg-body: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-main: #1e2b3d;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(30, 42, 80, 0.06);
            --shadow-md: 0 8px 24px rgba(30, 42, 80, 0.08);
            --shadow-lg: 0 16px 40px rgba(30, 42, 80, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }
        
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        
        input, textarea, select {
            font-family: inherit;
            outline: none;
        }
        
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(30, 42, 80, 0.04);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        
        .logo-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 10px;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(30, 79, 216, 0.25);
            transition: var(--transition);
        }
        
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            color: var(--text-main);
            white-space: nowrap;
        }
        
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }
        
        .nav-menu a {
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }
        
        .nav-menu a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        
        .nav-menu a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-left: auto;
        }
        
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 7px 14px;
            gap: 8px;
            width: 210px;
            transition: var(--transition);
        }
        
        .nav-search:hover, .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 79, 216, 0.08);
        }
        
        .nav-search i {
            color: var(--text-muted);
            font-size: 13px;
        }
        
        .nav-search input {
            border: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
            color: var(--text-main);
        }
        
        .nav-search input::placeholder {
            color: #94a3b8;
        }
        
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--text-main);
            padding: 8px;
        }
        
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88), rgba(30, 79, 216, 0.78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }
        
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        
        .page-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 640px;
            margin: 0 auto 28px;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        
        .hero-badge i {
            color: var(--accent);
        }
        
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(30, 79, 216, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(30, 79, 216, 0.4);
            color: #fff;
        }
        
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.1);
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            transition: var(--transition);
        }
        
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: #fff;
            color: #fff;
        }
        
        .breadcrumb-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        
        .breadcrumb-bar a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        
        .breadcrumb-bar i {
            font-size: 10px;
            color: #c0c8d6;
        }
        
        .breadcrumb-bar span {
            color: var(--primary);
            font-weight: 500;
        }
        
        .section {
            padding: 90px 0;
        }
        
        .section-alt {
            background: var(--bg-white);
        }
        
        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }
        
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }
        
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        
        .overview-media {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        
        .overview-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 26, 46, 0.2), transparent 40%);
        }
        
        .overview-media img {
            width: 100%;
            min-height: 340px;
            object-fit: cover;
        }
        
        .overview-content h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.4;
            color: var(--text-main);
        }
        
        .overview-content p {
            color: var(--text-muted);
            margin-bottom: 16px;
            font-size: 15px;
            line-height: 1.9;
        }
        
        .overview-points {
            list-style: none;
            margin: 24px 0 0;
            padding: 0;
        }
        
        .overview-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--text-main);
        }
        
        .overview-points li:last-child {
            border-bottom: none;
        }
        
        .overview-points i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        
        .feature-card:hover::before {
            opacity: 1;
        }
        
        .feature-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        
        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
        }
        
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        
        .steps-section {
            background: linear-gradient(135deg, var(--bg-dark), #16233d);
            color: #fff;
        }
        
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 20px;
        }
        
        .step-item {
            text-align: center;
            padding: 32px 20px;
            position: relative;
        }
        
        .step-number {
            width: 68px;
            height: 68px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.2);
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }
        
        .step-item:hover .step-number {
            border-color: var(--accent);
            background: rgba(245, 166, 35, 0.15);
        }
        
        .step-item::after {
            content: '';
            position: absolute;
            top: 64px;
            right: -16px;
            width: 32px;
            height: 2px;
            background: rgba(255, 255, 255, 0.2);
        }
        
        .step-item:last-child::after {
            display: none;
        }
        
        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        
        .step-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        
        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 24px;
            text-align: center;
            transition: var(--transition);
        }
        
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        
        .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }
        
        .guide-list {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .guide-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            transition: var(--transition);
        }
        
        .guide-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        
        .guide-item-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 10px;
            font-size: 18px;
            transition: var(--transition);
        }
        
        .guide-item:hover .guide-item-icon {
            background: var(--primary);
            color: #fff;
        }
        
        .guide-item-content {
            flex: 1;
        }
        
        .guide-item-content h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        
        .guide-item-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }
        
        .guide-item-arrow {
            color: #c0c8d6;
            font-size: 16px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        
        .guide-item:hover .guide-item-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }
        
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            border-color: #cbd5e1;
        }
        
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            user-select: none;
            gap: 16px;
        }
        
        .faq-question i {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 14px;
            flex-shrink: 0;
        }
        
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
            color: var(--primary);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 20px;
        }
        
        .cta-section {
            position: relative;
            padding: 100px 0;
            text-align: center;
            color: #fff;
            background: linear-gradient(135deg, rgba(30, 79, 216, 0.88), rgba(23, 62, 168, 0.94)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-blend-mode: overlay;
        }
        
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: #fff;
            color: var(--primary);
            border-radius: 12px;
            font-size: 16px;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        
        .cta-btn:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 14px 36px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
        }
        
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 0;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        
        .footer-brand .nav-logo .logo-text {
            color: #fff;
        }
        
        .footer-brand p {
            margin-top: 20px;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }
        
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        
        .footer-col a {
            display: block;
            padding: 7px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        
        .footer-col a:hover {
            color: #fff;
            padding-left: 6px;
        }
        
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 28px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .footer-bottom .domain i {
            margin-right: 6px;
        }
        
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-item::after {
                display: none;
            }
            .overview-grid {
                gap: 40px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-search {
                display: none;
            }
            .nav-menu {
                gap: 4px;
            }
            .nav-menu a {
                padding: 8px 14px;
                font-size: 13px;
            }
            .header-inner {
                gap: 16px;
            }
        }
        
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 14px 0;
                position: relative;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px;
                background: #fff;
                border-radius: 12px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
                position: absolute;
                top: 76px;
                left: 12px;
                right: 12px;
                z-index: 999;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .nav-actions {
                margin-left: auto;
            }
            .page-hero {
                padding: 72px 0 56px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .section {
                padding: 64px 0;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .overview-content h3 {
                font-size: 22px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-item {
                padding: 24px 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-card {
                padding: 28px 20px;
            }
            .stat-number {
                font-size: 32px;
            }
            .guide-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 18px;
            }
            .guide-item-arrow {
                display: none;
            }
            .cta-section {
                padding: 70px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-primary, .btn-outline {
                padding: 10px 22px;
                font-size: 14px;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                gap: 8px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
                border-radius: 8px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .section h2 {
                font-size: 22px;
            }
            .hero-actions {
                gap: 10px;
            }
            .btn-primary, .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .overview-media img {
                min-height: 220px;
            }
            .stat-number {
                font-size: 28px;
            }
        }