/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f1a2e;
  --primary-light: #1a2d4a;
  --primary-dark: #080f1c;
  --secondary: #e63946;
  --secondary-light: #ff5a67;
  --secondary-dark: #c12d39;
  --accent: #f4a261;
  --accent-light: #f7b87a;
  --bg: #ffffff;
  --bg-light: #f4f6f9;
  --bg-dark: #0f1a2e;
  --bg-gray: #e8ecf1;
  --text: #1a1a2e;
  --text-light: #5a6a7a;
  --text-muted: #8a9aa8;
  --text-white: #ffffff;
  --border: #dee3ea;
  --border-light: #eef1f5;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15, 26, 46, 0.08);
  --shadow-lg: 0 12px 48px rgba(15, 26, 46, 0.14);
  --shadow-hover: 0 8px 32px rgba(230, 57, 70, 0.18);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.25rem;
  --line-height: 1.7;
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1.25rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text); }
h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); margin-bottom: var(--spacing-lg); }
h3 { font-size: var(--font-size-xl); }
p { margin-bottom: var(--spacing-md); color: var(--text-light); }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md); }
.section { padding: var(--spacing-2xl) 0; }
.section-title { text-align: center; margin-bottom: var(--spacing-xl); }
.section-title h2 { font-size: var(--font-size-3xl); color: var(--primary); margin-bottom: var(--spacing-sm); }
.section-title p { font-size: var(--font-size-lg); color: var(--text-light); max-width: 680px; margin: 0 auto; }
.btn {
  display: inline-flex; align-items: center; gap: var(--spacing-xs);
  padding: 0.75rem 2rem; border-radius: 50px;
  font-weight: 600; font-size: var(--font-size-base);
  transition: var(--transition); border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--secondary); color: var(--text-white); border-color: var(--secondary);
}
.btn-primary:hover { background: var(--secondary-dark); border-color: var(--secondary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-outline {
  background: transparent; color: var(--text-white); border-color: var(--text-white);
}
.btn-outline:hover { background: var(--text-white); color: var(--secondary); border-color: var(--text-white); transform: translateY(-2px); }
.btn-outline-dark {
  background: transparent; color: var(--primary); border-color: var(--primary);
}
.btn-outline-dark:hover { background: var(--primary); color: var(--text-white); transform: translateY(-2px); }
.badge {
  display: inline-block; padding: 0.2rem 0.8rem; border-radius: 50px;
  font-size: var(--font-size-xs); font-weight: 600; letter-spacing: 0.3px;
}
.badge-red { background: rgba(230,57,70,0.12); color: var(--secondary); }
.badge-blue { background: rgba(15,26,46,0.08); color: var(--primary); }
.badge-orange { background: rgba(244,162,97,0.15); color: #c77d3a; }

/* ===== Header & Nav ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,26,46,0.95); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.header.scrolled { background: rgba(15,26,46,0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-md);
}
.logo { font-size: var(--font-size-xl); font-weight: 800; color: var(--text-white); letter-spacing: 0.5px; }
.logo span { color: var(--secondary); }
.logo:hover { color: var(--text-white); opacity: 0.9; }
.nav { display: flex; align-items: center; gap: var(--spacing-lg); }
.nav a {
  color: rgba(255,255,255,0.75); font-weight: 500; font-size: var(--font-size-sm);
  position: relative; padding: 0.25rem 0; letter-spacing: 0.3px;
}
.nav a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--secondary); transition: var(--transition); border-radius: 2px;
}
.nav a:hover { color: var(--text-white); }
.nav a:hover::after { width: 100%; }
.nav a.active { color: var(--text-white); }
.nav a.active::after { width: 100%; }
.nav-cta {
  background: var(--secondary); color: var(--text-white) !important; padding: 0.45rem 1.4rem !important;
  border-radius: 50px; font-weight: 600; font-size: var(--font-size-sm);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--secondary-dark); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.hamburger span { width: 26px; height: 2.5px; background: var(--text-white); border-radius: 4px; transition: var(--transition); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 90vh; display: flex; align-items: center;
  background: var(--primary); overflow: hidden; padding-top: 68px;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.35; transform: scale(1.05);
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(135deg, rgba(15,26,46,0.88) 0%, rgba(15,26,46,0.6) 50%, rgba(15,26,46,0.88) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 800px; padding: var(--spacing-xl) 0; }
.hero-badge {
  display: inline-block; padding: 0.3rem 1.2rem; border-radius: 50px;
  background: rgba(230,57,70,0.2); color: var(--secondary); font-size: var(--font-size-sm);
  font-weight: 600; margin-bottom: var(--spacing-md); border: 1px solid rgba(230,57,70,0.25);
}
.hero h1 {
  font-size: var(--font-size-5xl); color: var(--text-white); line-height: 1.2;
  margin-bottom: var(--spacing-md); font-weight: 800; letter-spacing: -0.5px;
}
.hero h1 span { color: var(--secondary); }
.hero p {
  font-size: var(--font-size-lg); color: rgba(255,255,255,0.75);
  max-width: 620px; margin-bottom: var(--spacing-lg); line-height: 1.8;
}
.hero-actions { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: var(--spacing-xl); margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg); border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: var(--font-size-3xl); font-weight: 800; color: var(--text-white); letter-spacing: -0.5px; }
.hero-stat .num span { color: var(--secondary); }
.hero-stat .label { font-size: var(--font-size-sm); color: rgba(255,255,255,0.55); margin-top: 2px; }

/* ===== Features ===== */
.features { background: var(--bg); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.feature-card {
  background: var(--bg); border-radius: var(--radius); padding: var(--spacing-lg);
  border: 1px solid var(--border); transition: var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--secondary); transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: var(--spacing-md);
}
.feature-icon.red { background: rgba(230,57,70,0.1); color: var(--secondary); }
.feature-icon.blue { background: rgba(15,26,46,0.08); color: var(--primary); }
.feature-icon.orange { background: rgba(244,162,97,0.12); color: #c77d3a; }
.feature-card h3 { font-size: var(--font-size-lg); margin-bottom: var(--spacing-xs); color: var(--primary); }
.feature-card p { font-size: var(--font-size-sm); color: var(--text-light); margin-bottom: 0; }
.feature-card .feature-img {
  margin-top: var(--spacing-md); border-radius: var(--radius-sm); overflow: hidden;
  height: 180px; background: var(--bg-gray);
}
.feature-card .feature-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.feature-card:hover .feature-img img { transform: scale(1.05); }

/* ===== Latest News (CMS) ===== */
.latest-news { background: var(--bg-light); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
.news-card {
  display: flex; flex-direction: column; background: var(--bg);
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border);
  transition: var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.news-card-img {
  height: 200px; background: var(--bg-gray); overflow: hidden; position: relative;
}
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-img .badge { position: absolute; top: var(--spacing-sm); left: var(--spacing-sm); z-index: 2; }
.news-card-body { padding: var(--spacing-md); flex: 1; display: flex; flex-direction: column; }
.news-card-body h3 { font-size: var(--font-size-base); font-weight: 700; color: var(--text); margin-bottom: var(--spacing-xs); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-body p { font-size: var(--font-size-sm); color: var(--text-light); margin-bottom: var(--spacing-sm); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-meta { display: flex; align-items: center; gap: var(--spacing-sm); font-size: var(--font-size-xs); color: var(--text-muted); margin-top: auto; }
.news-card-meta i { margin-right: 3px; }
.news-empty {
  grid-column: 1 / -1; text-align: center; padding: var(--spacing-xl);
  color: var(--text-light); font-size: var(--font-size-lg);
  background: var(--bg); border-radius: var(--radius); border: 1px dashed var(--border);
}

/* ===== Stats / Data ===== */
.stats-section {
  background: var(--primary); position: relative; overflow: hidden;
}
.stats-section::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-lg); position: relative; z-index: 1; }
.stat-item { text-align: center; padding: var(--spacing-lg); }
.stat-item .num { font-size: var(--font-size-4xl); font-weight: 800; color: var(--text-white); letter-spacing: -0.5px; }
.stat-item .num span { color: var(--secondary); }
.stat-item .label { font-size: var(--font-size-sm); color: rgba(255,255,255,0.6); margin-top: var(--spacing-xs); }

/* ===== Testimonials ===== */
.testimonials { background: var(--bg); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.testimonial-card {
  background: var(--bg); border-radius: var(--radius); padding: var(--spacing-lg);
  border: 1px solid var(--border); transition: var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.testimonial-stars { color: #f4a261; font-size: var(--font-size-sm); margin-bottom: var(--spacing-sm); }
.testimonial-card blockquote { font-size: var(--font-size-sm); color: var(--text-light); line-height: 1.7; margin-bottom: var(--spacing-md); font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: var(--spacing-sm); }
.testimonial-author .avatar {
  width: 44px; height: 44px; border-radius: 50%; background: var(--bg-gray);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem; color: var(--text-light);
}
.testimonial-author .name { font-weight: 700; font-size: var(--font-size-sm); color: var(--text); }
.testimonial-author .role { font-size: var(--font-size-xs); color: var(--text-muted); }

/* ===== FAQ ===== */
.faq { background: var(--bg-light); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--spacing-sm); }
.faq-item {
  background: var(--bg); border-radius: var(--radius-sm); border: 1px solid var(--border);
  overflow: hidden; transition: var(--transition);
}
.faq-item:hover { border-color: var(--secondary); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg); font-weight: 600; font-size: var(--font-size-base);
  color: var(--text); cursor: pointer; transition: var(--transition);
  gap: var(--spacing-md);
}
.faq-question:hover { color: var(--secondary); }
.faq-question i { font-size: var(--font-size-sm); color: var(--text-muted); transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--secondary); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 var(--spacing-lg);
}
.faq-item.active .faq-answer {
  max-height: 300px; padding: 0 var(--spacing-lg) var(--spacing-md);
}
.faq-answer p { font-size: var(--font-size-sm); color: var(--text-light); margin-bottom: 0; }

/* ===== CTA ===== */
.cta-section {
  background: var(--primary); position: relative; overflow: hidden;
  text-align: center; padding: var(--spacing-2xl) 0;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity: 0.08;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: var(--font-size-3xl); color: var(--text-white); margin-bottom: var(--spacing-sm); }
.cta-section p { font-size: var(--font-size-lg); color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto var(--spacing-lg); }
.cta-actions { display: flex; justify-content: center; gap: var(--spacing-md); flex-wrap: wrap; }

/* ===== Footer ===== */
.footer {
  background: var(--primary-dark); color: rgba(255,255,255,0.7); padding: var(--spacing-xl) 0 var(--spacing-lg);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
.footer-brand .logo { font-size: var(--font-size-2xl); margin-bottom: var(--spacing-sm); display: inline-block; }
.footer-brand p { font-size: var(--font-size-sm); color: rgba(255,255,255,0.5); max-width: 300px; margin-bottom: var(--spacing-md); }
.footer-social { display: flex; gap: var(--spacing-sm); }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6);
  font-size: 1rem; transition: var(--transition);
}
.footer-social a:hover { background: var(--secondary); color: var(--text-white); transform: translateY(-2px); }
.footer h4 { font-size: var(--font-size-base); color: var(--text-white); margin-bottom: var(--spacing-md); font-weight: 700; }
.footer ul li { margin-bottom: var(--spacing-xs); }
.footer ul li a { font-size: var(--font-size-sm); color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer ul li a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06); padding-top: var(--spacing-lg);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--spacing-md);
  font-size: var(--font-size-sm); color: rgba(255,255,255,0.35);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
  .hero h1 { font-size: var(--font-size-4xl); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: var(--spacing-lg); flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--primary); flex-direction: column; padding: var(--spacing-md); gap: var(--spacing-sm); border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav.open { display: flex; }
  .nav a { padding: var(--spacing-sm) 0; font-size: var(--font-size-base); }
  .hamburger { display: flex; }
  .hero { min-height: 70vh; }
  .hero h1 { font-size: var(--font-size-3xl); }
  .hero p { font-size: var(--font-size-base); }
  .features-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
  .stat-item .num { font-size: var(--font-size-3xl); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section-title h2 { font-size: var(--font-size-2xl); }
  .cta-section h2 { font-size: var(--font-size-2xl); }
  .hero-stats { justify-content: center; }
  .hero-actions { justify-content: center; }
  .hero-content { text-align: center; padding: var(--spacing-lg) 0; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-badge { margin-left: auto; margin-right: auto; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: var(--font-size-2xl); }
  .hero-stat .num { font-size: var(--font-size-2xl); }
  .container { padding: 0 var(--spacing-sm); }
  .section { padding: var(--spacing-xl) 0; }
  .btn { padding: 0.6rem 1.5rem; font-size: var(--font-size-sm); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-sm); }
  .stat-item { padding: var(--spacing-md); }
  .hero-stats { gap: var(--spacing-md); }
}

/* ===== Misc ===== */
.section-divider { height: 1px; background: var(--border-light); max-width: var(--max-width); margin: 0 auto; }
.fade-in { animation: fadeIn 0.6s ease forwards; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #c0392b;
            --primary-dark: #a93226;
            --primary-light: #e74c3c;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #f1c40f;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section: #f0f2f5;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #7f8c8d;
            --text-white: #ffffff;
            --border-color: #e0e0e0;
            --border-light: #f0f0f0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 48px rgba(192, 57, 43, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--header-height);
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .logo span {
            color: var(--primary);
        }

        .logo i {
            color: var(--primary);
            font-size: 22px;
            margin-right: 6px;
        }

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

        .nav a {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }

        .nav a:hover {
            color: var(--primary);
            background: rgba(192, 57, 43, 0.06);
        }

        .nav a.active {
            color: var(--primary);
            background: rgba(192, 57, 43, 0.08);
            font-weight: 600;
        }

        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav .nav-cta {
            background: var(--primary);
            color: var(--text-white) !important;
            padding: 8px 22px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 12px rgba(192, 57, 43, 0.3);
        }

        .nav .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(192, 57, 43, 0.4);
        }

        .nav .nav-cta i {
            font-size: 14px;
        }

        .mobile-toggle {
            display: none;
            font-size: 24px;
            color: var(--text-primary);
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 50%, #1a1a2e 100%);
            overflow: hidden;
            padding: 80px 24px 60px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-body), transparent);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: var(--radius-xl);
            background: rgba(192, 57, 43, 0.2);
            color: var(--primary-light);
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 1px;
            border: 1px solid rgba(192, 57, 43, 0.3);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: -1px;
            line-height: 1.15;
        }

        .hero h1 span {
            color: var(--accent);
        }

        .hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-xl);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 16px rgba(192, 57, 43, 0.35);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(192, 57, 43, 0.45);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(243, 156, 18, 0.1);
            transform: translateY(-3px);
        }

        .btn-accent {
            background: var(--accent);
            color: var(--text-primary);
            box-shadow: 0 4px 16px rgba(243, 156, 18, 0.35);
        }

        .btn-accent:hover {
            background: #e67e22;
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(243, 156, 18, 0.45);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-header h2 span {
            color: var(--primary);
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Category Cards Grid ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

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

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(192, 57, 43, 0.15);
        }

        .category-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(192, 57, 43, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 28px;
            color: var(--primary);
            transition: var(--transition);
        }

        .category-card:hover .icon-wrap {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }

        .category-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .category-card .tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            background: rgba(192, 57, 43, 0.06);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
        }

        /* ===== Features / 卖点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

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

        .feature-card .icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== Data Service Section ===== */
        .data-service {
            background: var(--bg-section);
        }

        .data-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .data-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .data-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: var(--transition);
        }

        .data-image:hover img {
            transform: scale(1.03);
        }

        .data-text h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .data-text h2 span {
            color: var(--primary);
        }

        .data-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .data-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 16px 8px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }

        .stat-item .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }

        .stat-item .label {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* ===== Audience / 适用人群 ===== */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .audience-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 20px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .audience-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(192, 57, 43, 0.12);
        }

        .audience-card .emoji-icon {
            font-size: 40px;
            margin-bottom: 14px;
            display: block;
        }

        .audience-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .audience-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Process / 流程 ===== */
        .process {
            background: var(--bg-dark);
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }

        .process::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }

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

        .process .section-header h2 {
            color: var(--text-white);
        }

        .process .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .process .section-divider {
            background: var(--accent);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }

        .step-card {
            text-align: center;
            padding: 32px 20px 28px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--text-primary);
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }

        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 20px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
        }

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

        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 28px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 28px 24px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 72px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }

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

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-section .btn {
            font-size: 18px;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: var(--text-white);
            font-size: 22px;
            margin-bottom: 16px;
        }

        .footer-brand .logo span {
            color: var(--primary-light);
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 18px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        .footer h4 {
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer ul li {
            margin-bottom: 10px;
        }

        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer ul li a i {
            font-size: 13px;
            width: 16px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

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

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

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

            .data-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .data-image img {
                height: 280px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }

            .mobile-toggle {
                display: block;
            }

            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 2px solid var(--border-light);
                gap: 6px;
            }

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

            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
            }

            .nav a.active::after {
                display: none;
            }

            .nav .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p {
                font-size: 16px;
            }

            .hero {
                min-height: 340px;
                padding: 60px 20px 48px;
            }

            .section {
                padding: 56px 0;
            }

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

            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .data-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }

            .stat-item .num {
                font-size: 22px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

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

            .cta-section p {
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }

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

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

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

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

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

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

            .data-text h2 {
                font-size: 24px;
            }

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

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0d1b3e;
            --primary-light: #1a2d5e;
            --primary-dark: #070f24;
            --accent: #e53935;
            --accent-hover: #c62828;
            --accent-light: #ffebee;
            --gold: #f9a825;
            --gold-light: #fff8e1;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --bg-body: #f5f6fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1b3e;
            --bg-section: #f0f2f8;
            --border: #e2e5f0;
            --border-light: #f0f2f8;
            --shadow-sm: 0 2px 8px rgba(13, 27, 62, 0.06);
            --shadow-md: 0 8px 30px rgba(13, 27, 62, 0.1);
            --shadow-lg: 0 20px 60px rgba(13, 27, 62, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary);
        }

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

        /* ===== Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .logo span {
            color: var(--accent);
        }

        .logo i {
            font-size: 22px;
            color: var(--accent);
            margin-right: 6px;
        }

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

        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .nav a:hover {
            color: var(--primary);
            background: var(--bg-section);
        }

        .nav a.active {
            color: var(--accent);
            background: var(--accent-light);
        }

        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 14px rgba(229, 57, 53, 0.3);
        }

        .nav a.nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(229, 57, 53, 0.4);
        }

        .nav a.nav-cta i {
            font-size: 14px;
        }

        /* Mobile Toggle */
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--primary);
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--bg-section);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 60px;
            background: var(--primary);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 62, 0.92) 0%, rgba(13, 27, 62, 0.7) 100%);
            z-index: 1;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .article-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: var(--radius-xl);
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .article-hero .hero-badge i {
            color: var(--gold);
        }

        .article-hero h1 {
            font-size: clamp(28px, 4vw, 48px);
            font-weight: 800;
            color: #fff;
            max-width: 900px;
            margin: 0 auto 16px;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .article-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
            margin-top: 8px;
        }

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

        .article-hero .hero-meta i {
            font-size: 14px;
            color: var(--gold);
        }

        /* ===== Main Content ===== */
        .article-main {
            padding: 50px 0 70px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            min-height: 300px;
        }

        .article-body .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-primary);
        }

        .article-body .article-content p {
            margin-bottom: 1.4em;
        }

        .article-body .article-content h2,
        .article-body .article-content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
        }

        .article-body .article-content h2 {
            font-size: 26px;
            border-bottom: 2px solid var(--border-light);
            padding-bottom: 10px;
        }

        .article-body .article-content h3 {
            font-size: 20px;
        }

        .article-body .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body .article-content ul,
        .article-body .article-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }

        .article-body .article-content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }

        .article-body .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }

        .article-body .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.5em 0;
            background: var(--accent-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body .article-content a:hover {
            color: var(--accent-hover);
        }

        /* Article Footer (tags, share) */
        .article-footer-bar {
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

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

        .article-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-section);
            border-radius: var(--radius-xl);
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border);
        }

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

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .article-share a {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-section);
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 15px;
            border: 1px solid var(--border);
        }

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

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .sidebar-card h3 {
            font-size: 17px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
        }

        .sidebar-card h3 i {
            color: var(--accent);
            font-size: 16px;
        }

        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }

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

        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
            font-weight: 500;
        }

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

        .sidebar-list a i {
            color: var(--accent);
            font-size: 12px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border: none;
            text-align: center;
            padding: 32px 24px;
        }

        .sidebar-cta h3 {
            color: #fff;
            justify-content: center;
        }

        .sidebar-cta h3 i {
            color: var(--gold);
        }

        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .sidebar-cta .btn {
            background: var(--accent);
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            box-shadow: 0 4px 14px rgba(229, 57, 53, 0.3);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .sidebar-cta .btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(229, 57, 53, 0.4);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

        .not-found-box i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 16px;
        }

        .not-found-box .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-xl);
            font-weight: 600;
            transition: var(--transition);
        }

        .not-found-box .btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--bg-white);
        }

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

        .related-section .section-header h2 {
            font-size: 30px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .related-section .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 500px;
            margin: 0 auto;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .related-card {
            background: var(--bg-body);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border);
        }

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

        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-section);
        }

        .related-card .card-body {
            padding: 18px 20px 22px;
        }

        .related-card .card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

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

        .related-card .card-body 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;
        }

        .related-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .related-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-section);
        }

        .faq-section .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .faq-section .section-header h2 {
            font-size: 30px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .faq-section .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 520px;
            margin: 0 auto;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
            gap: 16px;
            max-width: 960px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
            cursor: pointer;
        }

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

        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
            gap: 12px;
        }

        .faq-item .faq-q i {
            color: var(--accent);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }

        .faq-item .faq-a {
            margin-top: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }

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

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

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

        .cta-section h2 {
            font-size: 32px;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(229, 57, 53, 0.35);
        }

        .cta-section .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(229, 57, 53, 0.45);
            color: #fff;
        }

        .cta-section .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
        }

        .cta-section .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(229, 57, 53, 0.15);
            color: #fff;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            border-top: 4px solid var(--accent);
        }

        .footer .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 12px;
        }

        .footer .logo span {
            color: var(--accent);
        }

        .footer p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 400px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand p {
            margin: 12px 0 18px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            font-size: 16px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }

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

        .footer ul li {
            margin-bottom: 10px;
        }

        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer ul li a i {
            font-size: 13px;
            color: var(--accent);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
        }

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

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(229, 57, 53, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--border);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

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

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }

            .nav.open {
                display: flex;
            }

            .nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

            .nav a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }

            .nav a.active::after {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .article-hero {
                min-height: 280px;
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 36px;
            }

            .article-hero h1 {
                font-size: 24px;
            }

            .article-hero .hero-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-body {
                padding: 24px 20px;
            }

            .article-body .article-content {
                font-size: 16px;
            }

            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

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

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

            .faq-item .faq-q {
                font-size: 14px;
            }
        }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

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

            .cta-section .btn-primary,
            .cta-section .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .article-hero .hero-meta {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }

            .article-body {
                padding: 20px 16px;
            }

            .sidebar-card {
                padding: 20px 18px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-muted);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-secondary);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--accent);
            color: #fff;
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }