/* roulang page: index */
:root {
  --primary: #0d3b8a;
  --primary-dark: #082a63;
  --primary-light: #eaf0fb;
  --accent: #00c391;
  --accent-dark: #009e7a;
  --bg: #f4f7fc;
  --surface: #ffffff;
  --text: #15283f;
  --text-muted: #5f6f82;
  --border: #e2e9f2;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(12, 35, 70, 0.06);
  --shadow-md: 0 8px 30px rgba(12, 35, 70, 0.1);
  --shadow-lg: 0 20px 50px rgba(12, 35, 70, 0.16);
  --transition: all 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: var(--primary); transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; }

.container { max-width: 1200px; padding: 0 1.5rem; }

/* ---------- Buttons ---------- */
.btn {
  border-radius: 50rem;
  padding: 0.65rem 1.6rem;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-brand {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(13, 59, 138, 0.25);
}
.btn-brand:hover, .btn-brand:focus {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13, 59, 138, 0.35);
}
.btn-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 195, 145, 0.25);
}
.btn-accent:hover, .btn-accent:focus {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 195, 145, 0.35);
}
.btn-outline-light {
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover, .btn-outline-light:focus {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: #fff;
}
.btn:focus-visible, .form-control:focus-visible {
  outline: 3px solid rgba(13, 59, 138, 0.3);
  outline-offset: 2px;
}

/* ---------- Badges & Tags ---------- */
.badge-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 50rem;
  letter-spacing: 0.3px;
}
.badge-hero {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.4rem 1rem;
  border-radius: 50rem;
  font-size: 0.85rem;
  backdrop-filter: blur(6px);
  display: inline-inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.badge-hero i { color: var(--accent); }

/* ---------- Header / Nav ---------- */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1050;
}
.navbar { padding: 0; }
.navbar-brand.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.4px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.navbar-brand.logo i {
  font-size: 1.4rem;
  color: var(--accent);
}
.navbar-brand.logo:hover { color: var(--primary); }
.navbar-toggler {
  border: none;
  padding: 0.4rem 0.6rem;
}
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(13,59,138,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.navbar .nav-link {
  font-weight: 500;
  color: var(--text);
  padding: 0.45rem 1.1rem;
  border-radius: 50rem;
  margin: 0 0.15rem;
  transition: var(--transition);
}
.navbar .nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.navbar .nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(13, 59, 138, 0.25);
}
.header-cta .btn { padding: 0.5rem 1.4rem; font-size: 0.95rem; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, rgba(8, 26, 54, 0.88) 0%, rgba(13, 59, 138, 0.88) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  position: relative;
  padding: 6.5rem 0 5.5rem;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(0, 195, 145, 0.3) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero h1 {
  font-size: clamp(2.3rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.5px;
  margin: 1.1rem 0 1.2rem;
}
.hero h1 .highlight {
  color: var(--accent);
  position: relative;
}
.hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 560px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-top: 2.6rem;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-trust span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.85);
}
.hero-trust i { color: var(--accent); }

/* ---------- Section Common ---------- */
.section { padding: 5rem 0; }
.section-title { text-align: center; margin-bottom: 3.2rem; }
.section-title .badge-tag { margin-bottom: 0.8rem; }
.section-title h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.8rem;
  letter-spacing: 0.3px;
}
.section-title p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.02rem;
}

/* ---------- Feature Cards ---------- */
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem 1.8rem;
  height: 100%;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 62px;
  height: 62px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.4rem;
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(-6deg) scale(1.05);
}
.feature-card h3 {
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 0.7rem;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

/* ---------- Category Card ---------- */
.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  height: 100%;
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-card-img {
  position: relative;
  height: 230px;
  overflow: hidden;
}
.category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .category-card-img img { transform: scale(1.06); }
.category-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 26, 54, 0.45), transparent 60%);
}
.category-card-body {
  padding: 1.8rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.category-card-body .badge-tag { align-self: flex-start; margin-bottom: 0.8rem; }
.category-card-body h3 { font-weight: 700; font-size: 1.4rem; margin-bottom: 0.6rem; }
.category-card-body p { color: var(--text-muted); font-size: 0.96rem; flex: 1; }
.category-card-footer {
  padding: 1rem 1.8rem 1.5rem;
}
.link-more {
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.link-more:hover { gap: 0.7rem; color: var(--primary-dark); }

/* ---------- News List ---------- */
.news-card {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.2rem;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  margin-bottom: 1rem;
  transition: var(--transition);
}
.news-card:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.news-date {
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 10px;
  padding: 0.4rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}
.news-body { flex: 1; min-width: 240px; }
.news-body h3 {
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
  transition: var(--transition);
}
.news-card:hover .news-body h3 { color: var(--primary); }
.news-body p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
  line-height: 1.6;
}

/* ---------- Stats ---------- */
.stats-section {
  background: linear-gradient(135deg, #082a63 0%, #0d3b8a 50%, #0f5da8 100%);
  color: #fff;
  padding: 4.2rem 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.15;
}
.stats-inner { position: relative; z-index: 2; }
.stat-item { text-align: center; padding: 1rem; }
.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 1px;
}
.stat-number .suffix { color: var(--accent); font-size: 2rem; margin-left: 2px; }
.stat-label {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  margin-top: 0.4rem;
}

/* ---------- Steps ---------- */
.step-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem 1.5rem;
  text-align: center;
  height: 100%;
  transition: var(--transition);
  position: relative;
}
.step-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.step-num {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1.3rem;
  box-shadow: 0 6px 16px rgba(13, 59, 138, 0.3);
}
.step-item h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
.step-item p { color: var(--text-muted); font-size: 0.92rem; margin: 0; }
.step-arrow {
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 1.4rem;
  z-index: 3;
}
@media (max-width: 991.98px) {
  .step-arrow { display: none; }
}

/* ---------- Sports Cards ---------- */
.sport-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 340px;
  display: block;
  transition: var(--transition);
}
.sport-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.sport-card:hover img { transform: scale(1.08); }
.sport-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 26, 54, 0.85) 0%, rgba(8, 26, 54, 0.1) 60%);
  transition: var(--transition);
}
.sport-card:hover .overlay { background: linear-gradient(to top, rgba(8, 26, 54, 0.92) 0%, rgba(8, 26, 54, 0.15) 60%); }
.sport-card .card-content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1.8rem;
  color: #fff;
}
.sport-card .tag {
  display: inline-block;
  background: rgba(0, 195, 145, 0.9);
  padding: 0.25rem 0.75rem;
  border-radius: 50rem;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
  letter-spacing: 0.4px;
}
.sport-card .card-content h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.4rem; }
.sport-card .card-content p { color: rgba(255, 255, 255, 0.8); font-size: 0.92rem; margin: 0; }

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius) !important;
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.faq-accordion .accordion-button {
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  padding: 1.2rem 1.4rem;
  font-size: 1.02rem;
  box-shadow: none;
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: var(--primary-light);
  color: var(--primary);
}
.faq-accordion .accordion-button:focus {
  box-shadow: none;
  outline: 2px solid rgba(13, 59, 138, 0.2);
}
.faq-accordion .accordion-button::after {
  background-size: 1rem;
  opacity: 0.6;
}
.faq-accordion .accordion-body {
  padding: 0.2rem 1.4rem 1.3rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 4.5rem 0;
  background: linear-gradient(120deg, #082a63 0%, #0d3b8a 60%, #0f5da8 100%);
  position: relative;
  overflow: hidden;
  color: #fff;
}
.cta-section::before {
  content: '';
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(0, 195, 145, 0.25), transparent 70%);
  border-radius: 50%;
}
.cta-inner { position: relative; z-index: 2; text-align: center; }
.cta-inner h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.8rem; }
.cta-inner p { color: rgba(255, 255, 255, 0.8); max-width: 560px; margin: 0 auto 1.8rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: #0a1628;
  color: #9fb0c3;
  padding: 3.5rem 0 0;
}
.site-footer .footer-brand {
  color: #fff;
  font-size: 1.3rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}
.site-footer .footer-brand i { color: var(--accent); }
.site-footer p { font-size: 0.9rem; line-height: 1.7; }
.site-footer h5 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}
.footer-link {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-link li { margin-bottom: 0.55rem; }
.footer-link a {
  color: #9fb0c3;
  font-size: 0.92rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.footer-link a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem 0;
  margin-top: 2.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: #7b8ba0;
}
.footer-bottom a { color: #9fb0c3; }
.footer-bottom a:hover { color: var(--accent); }

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
  animation: fadeInUp 0.6s ease both;
}
.hero-fade-in { animation: fadeInUp 0.8s ease 0.1s both; }
.hero-fade-in-2 { animation: fadeInUp 0.8s ease 0.2s both; }
.hero-fade-in-3 { animation: fadeInUp 0.8s ease 0.3s both; }

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  .hero { padding: 4.5rem 0; }
  .section { padding: 3.8rem 0; }
  .navbar .nav-link { padding: 0.5rem 1rem; margin: 0.2rem 0; }
  .navbar-nav { padding: 0.8rem 0; }
  .header-cta { margin-top: 0.6rem; }
  .sport-card { height: 280px; }
}
@media (max-width: 767.98px) {
  .hero p { font-size: 1rem; }
  .hero-trust { gap: 1rem; }
  .section-title { margin-bottom: 2.2rem; }
  .news-card { padding: 1rem 1.2rem; }
  .stat-number { font-size: 2.1rem; }
  .cta-inner h2 { font-size: 1.6rem; }
}
@media (max-width: 575.98px) {
  .container { padding: 0 1.1rem; }
  .hero h1 { font-size: 2rem; }
  .hero { padding: 3.2rem 0; }
  .step-item { padding: 1.6rem 1.2rem; }
  .sport-card { height: 240px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1e40af;
            --primary-light: #e8eefb;
            --accent: #f59e0b;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --body-bg: #f8fafc;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --white: #ffffff;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
        }
        
        /* ===== Reset & Base ===== */
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--body-bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1200px; }
        
        /* ===== Header & Nav ===== */
        .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: 1000;
            padding: 12px 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--primary) !important;
        }
        .logo i {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 0.95rem;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--text);
            padding: 8px 18px !important;
            border-radius: 50px;
            margin: 0 4px;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .btn-brand {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 10px 22px;
            font-weight: 600;
        }
        .btn-brand:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.3);
        }
        .navbar-toggler { border: none; }
        .navbar-toggler:focus { box-shadow: none; }
        
        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 14px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow);
            }
        }
        
        /* ===== Hero / Banner ===== */
        .page-hero {
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.92)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.35), transparent 70%);
            pointer-events: none;
        }
        .page-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto;
            position: relative;
        }
        .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: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            margin-bottom: 20px;
            position: relative;
        }
        .hero-badge i { color: var(--accent); }
        
        @media (max-width: 768px) {
            .page-hero { padding: 60px 0; }
            .page-hero h1 { font-size: 1.7rem; }
            .page-hero p { font-size: 1rem; }
        }
        
        /* ===== Section 通用 ===== */
        .section { padding: 80px 0; }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text);
        }
        .section-sub {
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 40px;
        }
        
        @media (max-width: 768px) {
            .section { padding: 60px 0; }
            .section-title { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .section { padding: 40px 0; }
        }
        
        /* ===== 玩法分类 chips ===== */
        .play-chips {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .play-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 50px;
            font-weight: 600;
            color: var(--text);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .play-chip:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .play-chip i { color: var(--primary); }
        .play-chip:hover i { color: #fff; }
        
        @media (max-width: 520px) {
            .play-chip { padding: 10px 18px; font-size: 0.9rem; }
        }
        
        /* ===== 卡片 ===== */
        .card-modern {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .card-modern:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card-modern .card-img-top {
            height: 220px;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }
        .card-modern .card-body { padding: 24px; }
        .card-modern .card-title {
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text);
        }
        .card-modern .card-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.65;
        }
        .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 14px;
        }
        .card-tag i { margin-right: 4px; }
        
        @media (max-width: 520px) {
            .card-modern .card-title { font-size: 1rem; }
            .card-modern .card-body { padding: 18px; }
        }
        
        /* ===== 投注类型详解 ===== */
        .bet-type-row {
            display: flex;
            align-items: flex-start;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px;
            margin-bottom: 20px;
            gap: 24px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .bet-type-row:hover {
            box-shadow: var(--shadow-lg);
            transform: translateX(4px);
            border-color: var(--primary-light);
        }
        .bet-type-icon {
            width: 72px;
            height: 72px;
            flex-shrink: 0;
            background: var(--primary-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
        }
        .bet-type-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .bet-type-content p {
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        
        @media (max-width: 768px) {
            .bet-type-row {
                flex-direction: column;
                text-align: center;
                padding: 24px;
            }
            .bet-type-icon {
                margin: 0 auto 16px;
            }
        }
        
        /* ===== 流程步骤 ===== */
        .step-item {
            text-align: center;
            padding: 32px 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            height: 100%;
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0 auto 16px;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin: 0;
            line-height: 1.6;
        }
        
        @media (max-width: 520px) {
            .step-item { padding: 24px 16px; }
        }
        
        /* ===== 数据统计 ===== */
        .stats-section {
            background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.94)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
            padding: 24px 16px;
        }
        .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-label {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            margin-top: 4px;
        }
        
        @media (max-width: 768px) {
            .stats-section { padding: 60px 0; }
            .stat-num { font-size: 1.9rem; }
        }
        
        /* ===== FAQ（Bootstrap 手风琴） ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .faq-item .accordion-button {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: #fff;
            box-shadow: none;
            border: none;
        }
        .faq-item .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-item .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
        }
        .faq-item .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
        }
        .faq-item .accordion-button::after {
            flex-shrink: 0;
            margin-left: auto;
        }
        
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 50%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12), transparent 70%);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
        }
        .btn-cta {
            background: #fff;
            color: var(--primary) !important;
            border-radius: 50px;
            padding: 14px 36px;
            font-weight: 700;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            transition: var(--transition);
            position: relative;
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
            color: var(--primary) !important;
        }
        .btn-cta i { transition: transform 0.3s; }
        .btn-cta:hover i { transform: translateX(4px); }
        
        @media (max-width: 768px) {
            .cta-section { padding: 48px 24px; }
            .cta-section h2 { font-size: 1.5rem; }
        }
        
        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            margin-top: 80px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
        }
        .footer-brand i {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 0.9rem;
        }
        .site-footer h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 18px;
        }
        .footer-link {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-link li { margin-bottom: 10px; }
        .footer-link a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
        }
        .footer-link a:hover { color: #fff; transform: translateX(3px); }
        .footer-link i {
            margin-right: 6px;
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .site-footer p.mt-3 { line-height: 1.7; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
        }
        .footer-bottom a { color: rgba(255, 255, 255, 0.9); }
        .footer-bottom a:hover { color: var(--accent); }
        
        /* ===== 可访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(26, 86, 219, 0.5);
            outline-offset: 2px;
        }
        
        /* ===== 图片 hover 增强 ===== */
        .card-modern .card-img-top {
            transition: transform 0.4s ease;
        }
        .card-modern:hover .card-img-top {
            transform: scale(1.03);
        }

/* roulang page: article */
:root {
            --brand: #1e5ef4;
            --brand-dark: #1342a0;
            --brand-deep: #0d1f3c;
            --gold: #f0b90b;
            --bg-light: #f4f6fb;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-soft: #64748b;
            --border-color: #e3e8f0;
            --radius: 18px;
            --radius-sm: 10px;
            --radius-lg: 26px;
            --shadow-sm: 0 2px 12px rgba(13, 31, 60, 0.06);
            --shadow-md: 0 10px 32px rgba(13, 31, 60, 0.12);
            --shadow-lg: 0 24px 64px rgba(13, 31, 60, 0.18);
            --transition: all 0.25s ease;
            --font-main: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-main);
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        section {
            position: relative;
        }

        .section-head {
            text-align: center;
            margin-bottom: 42px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--brand-deep);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }
        .section-head p {
            color: var(--text-soft);
            font-size: 1rem;
        }

        .btn-brand {
            background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
            color: #fff;
            border: none;
            padding: 10px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 6px 22px rgba(30, 94, 244, 0.32);
            transition: var(--transition);
        }
        .btn-brand:hover {
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 12px 32px rgba(30, 94, 244, 0.42);
        }
        .btn-brand:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(30, 94, 244, 0.25);
        }
        .btn-gold {
            background: linear-gradient(135deg, #f0b90b, #d99d06);
            color: #0d1f3c;
            border: none;
            padding: 10px 30px;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: 0 6px 22px rgba(240, 185, 11, 0.3);
            transition: var(--transition);
        }
        .btn-gold:hover {
            transform: translateY(-2px);
            color: #0d1f3c;
            box-shadow: 0 12px 32px rgba(240, 185, 11, 0.45);
        }

        /* ===== Header / Navbar ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(13, 31, 60, 0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 10px 0;
        }
        .site-header .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.16rem;
            color: #fff;
            white-space: nowrap;
        }
        .site-header .logo i {
            color: var(--gold);
            font-size: 1.45rem;
        }
        .site-header .navbar-nav {
            gap: 4px;
        }
        .site-header .nav-link {
            color: rgba(255, 255, 255, 0.78);
            font-weight: 500;
            font-size: 0.93rem;
            padding: 8px 18px;
            border-radius: 30px;
            transition: var(--transition);
        }
        .site-header .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .site-header .nav-link.active {
            color: var(--gold);
            background: rgba(240, 185, 11, 0.14);
        }
        .site-header .btn-brand {
            padding: 8px 22px;
            font-size: 0.88rem;
        }
        .site-header .navbar-toggler {
            border-color: rgba(255, 255, 255, 0.3);
            padding: 4px 10px;
        }
        .site-header .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .site-header .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 84px 0 68px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(13, 31, 60, 0.92) 0%, rgba(30, 94, 244, 0.72) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            gap: 8px;
            margin-bottom: 18px;
        }
        .breadcrumb-line a {
            color: rgba(255, 255, 255, 0.85);
        }
        .breadcrumb-line a:hover {
            color: var(--gold);
        }
        .breadcrumb-line i {
            font-size: 0.7rem;
        }
        .page-banner h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            max-width: 860px;
        }
        .page-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.9);
        }
        .page-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .page-meta i {
            color: var(--gold);
        }

        /* ===== 文章主体 ===== */
        .article-main-section {
            padding: 60px 0 80px;
            background: var(--bg-light);
        }
        .article-box {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 42px 44px;
            animation: fadeUp 0.5s ease both;
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .article-excerpt {
            background: linear-gradient(135deg, #f0f4ff, #f7f9ff);
            border-left: 4px solid var(--brand);
            border-radius: 0 12px 12px 0;
            padding: 18px 22px;
            margin-bottom: 28px;
            color: var(--text-main);
            font-weight: 500;
            line-height: 1.8;
        }
        .article-body {
            color: #2c3a4b;
            font-size: 1rem;
            line-height: 1.9;
        }
        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 32px 0 14px;
            padding-left: 14px;
            border-left: 4px solid var(--brand);
            color: var(--brand-deep);
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 26px 0 10px;
            color: var(--brand-deep);
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 22px;
            margin-bottom: 20px;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--gold);
            background: #fffaf0;
            padding: 16px 22px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #7c5a00;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            margin: 24px 0;
        }
        .article-footer {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.85rem;
        }
        .article-tags span {
            color: var(--text-soft);
        }
        .article-tags a {
            background: var(--bg-light);
            padding: 5px 16px;
            border-radius: 30px;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags a:hover {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i {
            font-size: 3rem;
            color: var(--brand);
            margin-bottom: 16px;
            opacity: 0.5;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .not-found-box p {
            color: var(--text-soft);
            margin-bottom: 24px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar .sidebar-widget {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 26px 24px;
            margin-bottom: 24px;
        }
        .sidebar-widget .widget-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-deep);
            padding-bottom: 12px;
            border-bottom: 2px solid var(--brand);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget .widget-title i {
            color: var(--brand);
        }
        .sidebar-about {
            text-align: center;
            padding: 32px 22px !important;
            background: linear-gradient(160deg, #0d1f3c, #173a6e) !important;
            border: none !important;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .sidebar-about::after {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(240, 185, 11, 0.15);
        }
        .sidebar-about .about-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(240, 185, 11, 0.2);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--gold);
            margin-bottom: 14px;
        }
        .sidebar-about h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }
        .sidebar-about p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-top: 10px;
        }
        .sidebar-post-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-post-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-color);
        }
        .sidebar-post-list li:last-child {
            border-bottom: none;
        }
        .sidebar-post-list a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-main);
        }
        .sidebar-post-list a:hover {
            color: var(--brand);
        }
        .sidebar-post-list .post-title {
            font-weight: 500;
            flex: 1;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-post-list .post-date {
            font-size: 0.75rem;
            color: var(--text-soft);
            white-space: nowrap;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            color: var(--text-main);
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--brand);
            border-color: var(--brand);
            color: #fff;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, #1e5ef4, #173a6e);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .sidebar-cta .cta-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(240, 185, 11, 0.22);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--gold);
            margin-bottom: 12px;
        }
        .sidebar-cta h4 {
            font-size: 1.15rem;
            font-weight: 700;
        }
        .sidebar-cta p {
            font-size: 0.85rem;
            opacity: 0.8;
            margin-bottom: 18px;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 70px 0;
            background: var(--bg-white);
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(30, 94, 244, 0.3);
        }
        .related-card .card-img {
            position: relative;
            padding-top: 60%;
            overflow: hidden;
        }
        .related-card .card-img img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img img {
            transform: scale(1.04);
        }
        .related-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(13, 31, 60, 0.4));
        }
        .related-card .card-body {
            padding: 22px 22px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .badge-cat {
            display: inline-block;
            background: rgba(30, 94, 244, 0.1);
            color: var(--brand);
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            width: fit-content;
        }
        .related-card h3 {
            font-size: 1.02rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card h3 a {
            color: var(--brand-deep);
        }
        .related-card h3 a:hover {
            color: var(--brand);
        }
        .related-card .card-desc {
            font-size: 0.86rem;
            color: var(--text-soft);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .related-card .card-meta {
            font-size: 0.78rem;
            color: var(--text-soft);
            display: flex;
            gap: 14px;
        }
        .related-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-light);
        }
        .faq-grid {
            max-width: 920px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 16px;
            padding: 22px 28px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: rgba(30, 94, 244, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            font-weight: 600;
            font-size: 1rem;
            color: var(--brand-deep);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-item .faq-question i {
            color: var(--brand);
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .faq-item .faq-answer {
            margin-top: 12px;
            color: var(--text-soft);
            font-size: 0.92rem;
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background-size: cover;
            background-position: center;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 31, 60, 0.9), rgba(30, 94, 244, 0.7));
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.85;
            margin-bottom: 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--brand-deep);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .site-footer .footer-brand i {
            color: var(--gold);
            font-size: 1.4rem;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-link {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-link li {
            margin-bottom: 10px;
        }
        .footer-link a {
            color: rgba(255, 255, 255, 0.75);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-link a:hover {
            color: var(--gold);
        }
        .footer-link i {
            color: var(--gold);
            font-size: 0.75rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: var(--gold);
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            border: none;
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            color: #fff;
            font-size: 16px;
            box-shadow: var(--shadow-md);
            opacity: 0;
            transform: translateY(12px);
            pointer-events: none;
            transition: var(--transition);
            cursor: pointer;
        }
        .back-to-top.show {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .page-banner {
                padding: 60px 0 50px;
            }
            .article-box {
                padding: 30px 30px;
            }
        }
        @media (max-width: 768px) {
            .site-header .navbar-collapse {
                background: rgba(13, 31, 60, 0.98);
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
            }
            .site-header .navbar-nav {
                gap: 0;
            }
            .site-header .header-cta {
                margin-top: 12px;
                padding-top: 12px;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .article-main-section,
            .related-section,
            .faq-section,
            .cta-section {
                padding: 50px 0;
            }
            .article-box {
                padding: 24px 20px;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .page-meta {
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                padding: 44px 0 38px;
            }
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .breadcrumb-line {
                font-size: 0.76rem;
            }
            .article-box {
                border-radius: 14px;
                padding: 20px 16px;
            }
            .btn-brand {
                font-size: 0.85rem;
            }
            .site-footer {
                padding-top: 40px;
            }
            .footer-bottom {
                padding: 16px;
                font-size: 0.72rem;
            }
            .back-to-top {
                bottom: 18px;
                right: 18px;
                width: 40px;
                height: 40px;
            }
        }