/* roulang page: index */
:root {
  --primary: #E63946;
  --primary-dark: #C1121F;
  --primary-light: #F4A261;
  --secondary: #1D3557;
  --secondary-light: #457B9D;
  --accent: #F4A261;
  --accent-gold: #E9C46A;
  --dark: #1D3557;
  --darker: #0B1A2E;
  --light: #F8F9FA;
  --lighter: #FFFFFF;
  --gray-100: #F0F2F5;
  --gray-200: #E2E6EA;
  --gray-300: #C4CAD4;
  --gray-500: #6C7A8A;
  --gray-700: #3D4A5C;
  --text: #1A2332;
  --text-light: #5A6A7E;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
  --shadow-glow: 0 0 40px rgba(230,57,70,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); color: var(--text); background: var(--light); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 100px 0; }
.section-title { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 1rem; letter-spacing: -0.5px; }
.section-subtitle { font-size: 1.1rem; color: var(--text-light); max-width: 640px; line-height: 1.7; }
.text-gradient { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 1rem; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(230,57,70,0.35); }
.btn-secondary { background: var(--secondary); color: #fff; border-color: var(--secondary); }
.btn-secondary:hover { background: var(--darker); border-color: var(--darker); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(29,53,87,0.35); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(230,57,70,0.25); }
.btn-white { background: #fff; color: var(--primary); border-color: #fff; }
.btn-white:hover { background: var(--gray-100); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(255,255,255,0.3); }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 600; background: var(--gray-100); color: var(--text-light); }
.badge-primary { background: rgba(230,57,70,0.12); color: var(--primary); }
.badge-accent { background: rgba(244,162,97,0.15); color: #D4782A; }
.badge-success { background: rgba(46,204,113,0.12); color: #1A9E5A; }
.card { background: var(--lighter); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); transition: var(--transition); overflow: hidden; }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.card-body { padding: 24px; }
.card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.card-text { color: var(--text-light); font-size: 0.95rem; line-height: 1.6; }
.tag { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 500; background: var(--gray-100); color: var(--text-light); transition: var(--transition); }
.tag:hover { background: var(--primary); color: #fff; }
.tag-primary { background: rgba(230,57,70,0.1); color: var(--primary); }
.tag-primary:hover { background: var(--primary); color: #fff; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }
.fade-up { opacity: 0; transform: translateY(30px); animation: fadeUp 0.7s ease forwards; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* Header / Nav */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid rgba(0,0,0,0.04); transition: var(--transition); }
.header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.08); }
.navbar { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 800; color: var(--dark); letter-spacing: -0.5px; }
.nav-logo .logo-icon { width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.2rem; font-weight: 700; }
.nav-logo .logo-text { background: linear-gradient(135deg, var(--dark), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 40px; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-light); position: relative; padding: 4px 0; transition: var(--transition); }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .btn { padding: 10px 24px; font-size: 0.9rem; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.nav-toggle span { width: 26px; height: 2.5px; background: var(--dark); border-radius: 4px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
.nav-badge { display: inline-flex; align-items: center; gap: 4px; background: var(--primary); color: #fff; padding: 2px 12px; border-radius: 50px; font-size: 0.7rem; font-weight: 700; letter-spacing: 0.3px; margin-left: 6px; }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; background: var(--darker); overflow: hidden; padding-top: 72px; }
.hero-bg { position: absolute; inset: 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; background: linear-gradient(135deg, rgba(11,26,46,0.92) 0%, rgba(29,53,87,0.70) 50%, rgba(230,57,70,0.25) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 780px; padding: 60px 0; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.10); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.15); padding: 8px 20px; border-radius: 50px; color: #fff; font-size: 0.9rem; font-weight: 500; margin-bottom: 24px; }
.hero-badge i { color: var(--accent-gold); }
.hero h1 { font-size: 4rem; font-weight: 900; line-height: 1.08; color: #fff; margin-bottom: 20px; letter-spacing: -1px; }
.hero h1 .highlight { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.2rem; color: rgba(255,255,255,0.75); max-width: 580px; line-height: 1.7; margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.hero-stats { display: flex; gap: 40px; margin-top: 50px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.10); }
.hero-stat h3 { font-size: 2rem; font-weight: 800; color: #fff; }
.hero-stat p { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-bottom: 0; }
.hero-scroll { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 2; color: rgba(255,255,255,0.4); font-size: 1.4rem; animation: bounceDown 2s infinite; }
@keyframes bounceDown { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(10px)} }

/* Features / 核心优势 */
.features { background: var(--lighter); }
.feature-card { text-align: center; padding: 40px 28px; background: var(--lighter); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--gray-200); }
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: var(--primary); }
.feature-icon { width: 72px; height: 72px; border-radius: 18px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.feature-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }

/* Categories / 分类入口 */
.categories { background: var(--gray-100); }
.cat-card { position: relative; border-radius: var(--radius-md); overflow: hidden; min-height: 320px; display: flex; align-items: flex-end; cursor: pointer; transition: var(--transition); }
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.cat-card:hover img { transform: scale(1.05); }
.cat-card-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(11,26,46,0.85) 0%, rgba(11,26,46,0.15) 70%, transparent 100%); }
.cat-card-body { position: relative; z-index: 2; padding: 32px 28px; color: #fff; width: 100%; }
.cat-card-body h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 6px; }
.cat-card-body p { font-size: 0.9rem; opacity: 0.8; margin-bottom: 14px; }
.cat-card-body .tag { background: rgba(255,255,255,0.15); color: #fff; border: 1px solid rgba(255,255,255,0.2); }
.cat-card-body .tag:hover { background: var(--primary); border-color: var(--primary); }

/* Latest / 最新资讯 */
.latest { background: var(--lighter); }
.latest-card { display: flex; flex-direction: column; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); background: var(--lighter); border: 1px solid var(--gray-200); }
.latest-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.latest-card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.latest-card-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.latest-card-meta { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--gray-500); margin-bottom: 10px; }
.latest-card-meta .badge { font-size: 0.75rem; padding: 3px 12px; }
.latest-card h3 { font-size: 1.15rem; font-weight: 700; line-height: 1.4; margin-bottom: 8px; transition: var(--transition); }
.latest-card:hover h3 { color: var(--primary); }
.latest-card p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; flex: 1; }
.latest-card-footer { padding-top: 14px; margin-top: auto; display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; color: var(--gray-500); border-top: 1px solid var(--gray-200); }
.latest-empty { text-align: center; padding: 60px 20px; color: var(--text-light); font-size: 1.1rem; background: var(--gray-100); border-radius: var(--radius-md); }

/* Stats / 数据 */
.stats-section { background: var(--darker); 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: 0.10; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 30px 16px; }
.stat-item .number { font-size: 3rem; font-weight: 900; color: #fff; line-height: 1.1; }
.stat-item .label { font-size: 1rem; color: rgba(255,255,255,0.6); margin-top: 8px; }
.stat-item .icon { font-size: 2rem; color: var(--accent-gold); margin-bottom: 12px; }

/* Process / 流程步骤 */
.process { background: var(--lighter); }
.process-step { display: flex; gap: 24px; align-items: flex-start; padding: 28px 24px; background: var(--gray-100); border-radius: var(--radius-md); transition: var(--transition); }
.process-step:hover { background: var(--lighter); box-shadow: var(--shadow-sm); }
.process-step .step-num { flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.process-step h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 4px; }
.process-step p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; }

/* FAQ */
.faq { background: var(--gray-100); }
.faq-item { background: var(--lighter); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 24px 28px; transition: var(--transition); cursor: pointer; border: 1px solid var(--gray-200); }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item.open { border-color: var(--primary); }
.faq-question { display: flex; align-items: center; justify-content: space-between; font-size: 1.05rem; font-weight: 600; gap: 12px; }
.faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding-top: 0; color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }
.faq-item.open .faq-answer { max-height: 300px; padding-top: 16px; }

/* CTA */
.cta-section { background: var(--darker); 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-content { position: relative; z-index: 1; text-align: center; max-width: 700px; margin: 0 auto; }
.cta-content h2 { font-size: 2.6rem; font-weight: 900; color: #fff; margin-bottom: 16px; }
.cta-content p { font-size: 1.1rem; color: rgba(255,255,255,0.7); margin-bottom: 32px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }

/* Footer */
.footer { background: var(--darker); color: rgba(255,255,255,0.7); padding: 60px 0 30px; border-top: 1px solid rgba(255,255,255,0.06); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .nav-logo { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a { width: 42px; height: 42px; 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); transition: var(--transition); font-size: 1rem; }
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.footer h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { font-size: 0.9rem; color: rgba(255,255,255,0.55); transition: var(--transition); }
.footer ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); }

/* Responsive */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 3.2rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: fixed; top: 72px; left: 0; width: 100%; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 24px 28px; gap: 20px; box-shadow: 0 20px 40px rgba(0,0,0,0.10); border-top: 1px solid var(--gray-200); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-cta .btn span { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat h3 { font-size: 1.6rem; }
  .section-title { font-size: 1.8rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item .number { font-size: 2.2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-padding { padding: 60px 0; }
  .cta-content h2 { font-size: 1.8rem; }
  .process-step { flex-direction: column; }
  .latest-card { flex-direction: column; }
  .cat-card { min-height: 240px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 1.9rem; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .section-title { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 20px 12px; }
  .stat-item .number { font-size: 1.8rem; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* roulang page: article */
:root {
  --primary: #e2362b;
  --primary-dark: #b82a1f;
  --primary-light: #f85a4a;
  --secondary: #1a1a2e;
  --accent: #f5a623;
  --bg: #f8f9fa;
  --bg-alt: #ffffff;
  --text: #1e1e2a;
  --text-light: #5a5a72;
  --text-white: #ffffff;
  --border: #e6e6ef;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
  --shadow-card: 0 2px 16px rgba(0,0,0,0.05);
  --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1180px;
  --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.96); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border); height: var(--header-h);
  transition: var(--transition);
}
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
}
.nav-logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-icon {
  width: 38px; height: 38px; background: var(--primary); color: #fff;
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.3rem; flex-shrink: 0;
}
.logo-text { font-size: 1.25rem; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 8px 18px; border-radius: 8px; font-size: 0.925rem; font-weight: 500;
  color: var(--text-light); transition: var(--transition); position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: rgba(226,54,43,0.06); }
.nav-links a.active { color: var(--primary); background: rgba(226,54,43,0.10); font-weight: 600; }
.nav-badge {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--accent); color: #fff; font-size: 0.65rem; font-weight: 700;
  padding: 2px 8px; border-radius: 20px; margin-left: 4px; vertical-align: middle;
}
.nav-badge i { font-size: 0.6rem; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .btn { padding: 8px 20px; border-radius: 8px; font-size: 0.875rem; font-weight: 600; gap: 6px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 2.5px; background: var(--text); border-radius: 4px; transition: var(--transition); }
@media (max-width: 820px) {
  .nav-links { position: fixed; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); flex-direction: column; padding: 16px 24px; gap: 4px; border-bottom: 1px solid var(--border); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: var(--transition); box-shadow: var(--shadow); }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { width: 100%; padding: 12px 16px; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .nav-cta .btn span { display: none; }
}

.article-banner {
  margin-top: var(--header-h); background: var(--secondary);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center; background-blend-mode: overlay;
  padding: 80px 0 60px; position: relative; isolation: isolate;
}
.article-banner::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.88) 0%, rgba(26,26,46,0.72) 100%);
  z-index: 0;
}
.article-banner .container { position: relative; z-index: 1; }
.article-breadcrumb {
  display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-bottom: 20px; flex-wrap: wrap;
}
.article-breadcrumb a { color: rgba(255,255,255,0.8); }
.article-breadcrumb a:hover { color: #fff; }
.article-breadcrumb span { color: rgba(255,255,255,0.5); }
.article-category-badge {
  display: inline-block; background: var(--primary); color: #fff; font-size: 0.75rem; font-weight: 700;
  padding: 4px 14px; border-radius: 20px; letter-spacing: 0.5px; margin-bottom: 14px; text-transform: uppercase;
}
.article-banner h1 {
  font-size: 2.4rem; font-weight: 800; color: #fff; line-height: 1.25; max-width: 820px;
  margin-bottom: 18px;
}
.article-meta-bar {
  display: flex; align-items: center; gap: 24px; color: rgba(255,255,255,0.75); font-size: 0.9rem; flex-wrap: wrap;
}
.article-meta-bar i { margin-right: 6px; opacity: 0.7; }
.article-meta-bar .meta-author { display: flex; align-items: center; gap: 8px; }
.article-meta-bar .meta-avatar {
  width: 34px; height: 34px; border-radius: 50%; background: var(--primary);
  display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 0.85rem;
}
@media (max-width: 768px) {
  .article-banner { padding: 60px 0 40px; }
  .article-banner h1 { font-size: 1.6rem; }
  .article-meta-bar { gap: 14px; font-size: 0.8rem; }
}

.article-main { padding: 60px 0 80px; }
.article-layout {
  display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start;
}
@media (max-width: 1024px) { .article-layout { grid-template-columns: 1fr; gap: 40px; } }

.article-content {
  background: var(--bg-alt); border-radius: var(--radius); padding: 40px 44px;
  box-shadow: var(--shadow-card); border: 1px solid var(--border);
}
.article-content .content-body {
  font-size: 1.05rem; line-height: 1.85; color: var(--text);
}
.article-content .content-body p { margin-bottom: 1.4em; }
.article-content .content-body h2, .article-content .content-body h3 {
  margin-top: 1.8em; margin-bottom: 0.6em; font-weight: 700; color: var(--secondary);
}
.article-content .content-body h2 { font-size: 1.6rem; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
.article-content .content-body h3 { font-size: 1.25rem; }
.article-content .content-body ul, .article-content .content-body ol { margin-bottom: 1.4em; padding-left: 1.6em; }
.article-content .content-body ul li { list-style: disc; margin-bottom: 0.3em; }
.article-content .content-body ol li { list-style: decimal; margin-bottom: 0.3em; }
.article-content .content-body blockquote {
  border-left: 4px solid var(--primary); background: rgba(226,54,43,0.04); padding: 16px 22px; margin: 1.6em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-light); font-style: italic;
}
.article-content .content-body img { border-radius: var(--radius-sm); margin: 1.6em 0; box-shadow: var(--shadow); }
.article-content .content-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content .content-body a:hover { color: var(--primary-dark); }
.article-content .content-body table { width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: 0.95rem; }
.article-content .content-body th, .article-content .content-body td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-content .content-body th { background: rgba(226,54,43,0.05); font-weight: 600; }
.article-content .content-body code { background: #f1f1f5; padding: 2px 10px; border-radius: 6px; font-size: 0.9em; }
.article-content .content-body pre { background: #1e1e2e; color: #e4e4e7; padding: 20px 24px; border-radius: var(--radius-sm); overflow-x: auto; margin: 1.6em 0; font-size: 0.9rem; line-height: 1.6; }
.article-content .content-body pre code { background: none; padding: 0; color: inherit; }
.article-footer-meta {
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
}
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.article-tag {
  display: inline-block; background: rgba(226,54,43,0.06); color: var(--primary); font-size: 0.8rem; font-weight: 500;
  padding: 4px 14px; border-radius: 20px; border: 1px solid rgba(226,54,43,0.15);
}
.article-share { display: flex; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--text-light); }
.article-share a {
  width: 36px; height: 36px; border-radius: 50%; background: var(--bg); color: var(--text-light);
  display: flex; align-items: center; justify-content: center; transition: var(--transition); border: 1px solid var(--border);
}
.article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
@media (max-width: 768px) {
  .article-content { padding: 24px 20px; }
  .article-content .content-body { font-size: 0.98rem; }
  .article-footer-meta { flex-direction: column; align-items: flex-start; }
}

.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card {
  background: var(--bg-alt); border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow-card); border: 1px solid var(--border);
}
.sidebar-card h3 {
  font-size: 1.05rem; font-weight: 700; margin-bottom: 16px; color: var(--secondary);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); font-size: 1.1rem; }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list li a {
  display: flex; align-items: flex-start; gap: 12px; padding: 10px 12px;
  border-radius: var(--radius-sm); transition: var(--transition); background: var(--bg);
  border: 1px solid transparent;
}
.sidebar-list li a:hover { background: rgba(226,54,43,0.04); border-color: rgba(226,54,43,0.12); transform: translateX(4px); }
.sidebar-list .s-thumb {
  width: 60px; height: 60px; border-radius: 6px; object-fit: cover; flex-shrink: 0; background: var(--border);
}
.sidebar-list .s-info { flex: 1; min-width: 0; }
.sidebar-list .s-title { font-size: 0.88rem; font-weight: 600; color: var(--text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 4px; }
.sidebar-list .s-date { font-size: 0.72rem; color: var(--text-light); }
.sidebar-categories { display: flex; flex-direction: column; gap: 6px; }
.sidebar-categories a {
  display: flex; align-items: center; justify-content: space-between; padding: 10px 14px;
  border-radius: var(--radius-sm); background: var(--bg); transition: var(--transition);
  font-size: 0.9rem; color: var(--text-light); border: 1px solid var(--border);
}
.sidebar-categories a:hover { background: rgba(226,54,43,0.06); color: var(--primary); border-color: rgba(226,54,43,0.2); }
.sidebar-categories a span { background: var(--border); padding: 2px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; color: var(--text-light); }
.sidebar-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff;
  padding: 28px 24px; border-radius: var(--radius); text-align: center;
}
.sidebar-cta h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.sidebar-cta p { font-size: 0.85rem; opacity: 0.9; margin-bottom: 18px; }
.sidebar-cta .btn { background: #fff; color: var(--primary); padding: 10px 28px; border-radius: 8px; font-weight: 700; font-size: 0.9rem; }
.sidebar-cta .btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
@media (max-width: 1024px) { .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; } }
@media (max-width: 600px) { .article-sidebar { grid-template-columns: 1fr; } }

.not-found-box {
  text-align: center; padding: 80px 20px; background: var(--bg-alt);
  border-radius: var(--radius); box-shadow: var(--shadow-card); border: 1px solid var(--border);
}
.not-found-box i { font-size: 3.6rem; color: var(--border); margin-bottom: 20px; }
.not-found-box h2 { font-size: 1.6rem; color: var(--secondary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-light); margin-bottom: 24px; max-width: 400px; margin-left: auto; margin-right: auto; }
.not-found-box .btn { display: inline-flex; align-items: center; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem;
  border: none; cursor: pointer; transition: var(--transition); text-decoration: none;
  line-height: 1.2;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(226,54,43,0.25); }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }

.footer {
  background: var(--secondary); color: rgba(255,255,255,0.85); padding: 64px 0 0;
  border-top: 4px solid var(--primary);
}
.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 .nav-logo { margin-bottom: 14px; }
.footer-brand .logo-text { -webkit-text-fill-color: #fff; color: #fff; background: none; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; opacity: 0.75; margin-bottom: 18px; max-width: 360px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.7);
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem; transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.06);
}
.footer-social a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-3px); }
.footer h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; letter-spacing: 0.3px; }
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer ul li a { color: rgba(255,255,255,0.65); font-size: 0.88rem; transition: var(--transition); }
.footer ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  padding: 24px 0; font-size: 0.82rem; opacity: 0.6;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 600px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } .footer-bottom { flex-direction: column; text-align: center; } }

.btn-top {
  position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px; border-radius: 50%;
  background: var(--primary); color: #fff; border: none; cursor: pointer; font-size: 1.2rem;
  box-shadow: 0 4px 20px rgba(226,54,43,0.3); transition: var(--transition); z-index: 999;
  display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none;
}
.btn-top.visible { opacity: 1; pointer-events: auto; }
.btn-top:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(226,54,43,0.4); }

@media (max-width: 480px) {
  .article-banner h1 { font-size: 1.35rem; }
  .article-content { padding: 18px 14px; }
  .article-content .content-body { font-size: 0.92rem; }
  .sidebar-card { padding: 20px 16px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --primary-light: #fae1e3;
  --secondary: #1d3557;
  --secondary-light: #457b9d;
  --accent: #f4a261;
  --accent-glow: rgba(244, 162, 97, 0.3);
  --bg-body: #f8f9fa;
  --bg-card: #ffffff;
  --bg-dark: #1d3557;
  --bg-darker: #14253d;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-light: #8888aa;
  --text-white: #f1f1f1;
  --border: #e8e8f0;
  --border-light: #f0f0f8;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --container-w: 1200px;
  --header-h: 72px;
  --space-section: 100px;
  --space-block: 60px;
}
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-body);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; }
/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-sm); }
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(230,57,70,0.3);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  position: relative;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--primary);
  border-radius: 4px;
}
.nav-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 20px;
  margin-left: 6px;
  vertical-align: middle;
}
.nav-badge i { font-size: 10px; }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 26px;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(230,57,70,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(230,57,70,0.4); color: #fff; }
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--secondary);
  border: 2px solid var(--secondary);
}
.btn-outline:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-ghost:hover { background: rgba(255,255,255,0.25); color: #fff; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 4px;
  transition: var(--transition);
}
/* ===== Mobile Nav ===== */
@media (max-width: 1024px) {
  .nav-links { display: none; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px 24px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 18px; font-size: 16px; width: 100%; border-radius: var(--radius-sm); }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { background: var(--primary-light); }
  .nav-toggle { display: flex; }
  .nav-cta .btn span { display: none; }
  .nav-cta .btn { padding: 10px 16px; }
}
@media (max-width: 640px) {
  .logo-text { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; font-size: 16px; }
  .nav-cta .btn { padding: 8px 14px; font-size: 13px; }
  .nav-cta .btn i { margin: 0; }
}
/* ===== Hero Banner (内页) ===== */
.page-hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--secondary) 60%, var(--secondary-light) 100%);
  position: relative;
  overflow: hidden;
  min-height: 340px;
  display: flex;
  align-items: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
  mix-blend-mode: overlay;
}
.page-hero::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 40px;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,0.15);
}
.hero-badge i { color: var(--accent); }
.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.page-hero h1 span { color: var(--accent); }
.page-hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  line-height: 1.8;
}
.page-hero .hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 32px;
}
.page-hero .hero-stat h3 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
}
.page-hero .hero-stat p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-top: 2px;
}
@media (max-width: 768px) {
  .page-hero { padding: 120px 0 60px; min-height: 280px; }
  .page-hero h1 { font-size: 32px; }
  .page-hero p { font-size: 16px; }
  .page-hero .hero-stats { gap: 24px; flex-wrap: wrap; }
  .page-hero .hero-stat h3 { font-size: 22px; }
}
@media (max-width: 520px) {
  .page-hero h1 { font-size: 26px; }
  .page-hero .hero-stats { gap: 16px; }
  .page-hero .hero-stat { flex: 1 1 40%; }
}
/* ===== 通用板块 ===== */
.section {
  padding: var(--space-section) 0;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 16px;
}
.section-header-right { flex-shrink: 0; }
.bg-light { background: var(--bg-body); }
.bg-white { background: #fff; }
.bg-dark-section {
  background: var(--bg-dark);
  color: #fff;
}
.bg-dark-section .section-title { color: #fff; }
.bg-dark-section .section-subtitle { color: rgba(255,255,255,0.7); }
/* ===== 分类导航标签 ===== */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.category-tab {
  padding: 10px 24px;
  border-radius: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-weight: 500;
  font-size: 15px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.category-tab:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); transform: translateY(-2px); }
.category-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 4px 16px rgba(230,57,70,0.25); }
/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 1024px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.card:hover .card-img img { transform: scale(1.05); }
.card-img .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  z-index: 2;
}
.card-img .card-rating {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 4px;
  z-index: 2;
}
.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.4;
}
.card-body .card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 10px;
}
.card-body .card-meta i { font-size: 12px; }
.card-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}
.card-body .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}
.card-body .card-footer .btn-link {
  font-weight: 600;
  font-size: 14px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-body .card-footer .btn-link:hover { gap: 10px; }
/* ===== 特色功能列表 ===== */
.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 1024px) { .feature-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .feature-list { grid-template-columns: 1fr; } }
.feature-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  text-align: center;
}
.feature-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  font-size: 28px;
  color: var(--primary);
  transition: var(--transition);
}
.feature-item:hover .feature-icon { background: var(--primary); color: #fff; transform: scale(1.05); }
.feature-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--text-primary); }
.feature-item p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
/* ===== 图文交替区块 ===== */
.alt-grid {
  display: flex;
  flex-direction: column;
  gap: 60px;
}
.alt-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.alt-row.reverse { direction: rtl; }
.alt-row.reverse > * { direction: ltr; }
.alt-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.alt-image img { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius-lg); }
.alt-text h3 { font-size: 28px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.alt-text p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.alt-text .alt-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.alt-text .alt-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--text-secondary); }
.alt-text .alt-list li i { color: var(--primary); margin-top: 4px; flex-shrink: 0; }
@media (max-width: 900px) {
  .alt-row { grid-template-columns: 1fr; gap: 28px; }
  .alt-row.reverse { direction: ltr; }
  .alt-image img { height: 260px; }
  .alt-text h3 { font-size: 22px; }
}
/* ===== 评测排行 ===== */
.rank-list { display: flex; flex-direction: column; gap: 16px; }
.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-card);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.rank-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }
.rank-num {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 800;
  font-size: 20px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num { background: var(--primary); color: #fff; }
.rank-item:nth-child(2) .rank-num { background: var(--accent); color: #fff; }
.rank-item:nth-child(3) .rank-num { background: var(--secondary-light); color: #fff; }
.rank-info { flex: 1; }
.rank-info h4 { font-size: 17px; font-weight: 700; color: var(--text-primary); }
.rank-info p { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
.rank-score {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  flex-shrink: 0;
}
@media (max-width: 640px) {
  .rank-item { flex-wrap: wrap; gap: 12px; padding: 16px; }
  .rank-score { font-size: 18px; }
}
/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--border); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  color: var(--text-primary);
  gap: 16px;
  user-select: none;
}
.faq-question i { color: var(--primary); transition: var(--transition); font-size: 14px; flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px;
}
/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--bg-darker), var(--secondary));
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity: 0.08;
  mix-blend-mode: overlay;
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}
.cta-content .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
/* ===== Footer ===== */
.footer {
  background: var(--bg-darker);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 320px; }
.footer-social { display: flex; gap: 14px; margin-top: 20px; }
.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  color: rgba(255,255,255,0.7);
  font-size: 18px;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.footer h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer ul a:hover { color: var(--accent); transform: translateX(4px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
@media (max-width: 520px) { .footer-bottom { flex-direction: column; text-align: center; } }
/* ===== 额外实用 ===== */
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.gap-8 { gap: 8px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
/* ===== 响应式微调 ===== */
@media (max-width: 768px) {
  :root { --space-section: 60px; --space-block: 40px; }
  .section-title { font-size: 28px; }
  .section-header { margin-bottom: 32px; }
  .page-hero h1 { font-size: 32px; }
}
@media (max-width: 520px) {
  .section-title { font-size: 24px; }
  .page-hero h1 { font-size: 26px; }
}

/* roulang page: category2 */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --primary-light: #ff6b6b;
  --secondary: #1d3557;
  --secondary-light: #457b9d;
  --accent: #f4a261;
  --accent-light: #f9c784;
  --bg: #f8f9fa;
  --bg-alt: #ffffff;
  --bg-dark: #1a1a2e;
  --text: #2b2d42;
  --text-light: #6c757d;
  --text-white: #ffffff;
  --border: #e0e0e0;
  --border-light: #f0f0f0;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --container: 1200px;
  --nav-height: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: var(--nav-height);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.section-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  line-height: 1.6;
}
.section-header {
  text-align: center;
  margin-bottom: 52px;
}
.section-header .section-sub {
  margin: 0 auto;
}
.text-center { text-align: center; }
.text-white { color: var(--text-white); }
.text-white .section-sub { color: rgba(255,255,255,0.75); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(230,57,70,0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-alt {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
.btn-alt:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  height: var(--nav-height);
  transition: var(--transition);
}
.header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.08); }
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(230,57,70,0.3);
}
.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  padding: 8px 18px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--text);
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
.nav-links a.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(230,57,70,0.25);
}
.nav-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--accent);
  color: #1a1a2e;
  padding: 2px 10px;
  border-radius: 20px;
  margin-left: 4px;
  vertical-align: middle;
  line-height: 1.4;
}
.nav-badge i { font-size: 0.65rem; }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-cta .btn { padding: 9px 22px; font-size: 0.88rem; }
.nav-cta .btn i { font-size: 0.8rem; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--text);
  border-radius: 4px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero Banner ===== */
.page-hero {
  position: relative;
  padding: 100px 0 80px;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.15;
  mix-blend-mode: overlay;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}
.hero-breadcrumb a { color: rgba(255,255,255,0.7); }
.hero-breadcrumb a:hover { color: var(--primary-light); }
.hero-breadcrumb .sep { opacity: 0.4; }
.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}
.hero-title span { background: linear-gradient(135deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}
.hero-stat {
  text-align: center;
}
.hero-stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}
.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-top: 2px;
}

/* ===== Category Filter ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 24px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.9rem;
  border: 2px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 15px rgba(230,57,70,0.25);
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.card-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--border-light);
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.card:hover .card-img img { transform: scale(1.06); }
.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}
.card-tag.green { background: #2a9d8f; }
.card-tag.purple { background: #7b2cbf; }
.card-tag.orange { background: var(--accent); color: #1a1a2e; }
.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
}
.card-body h3 a { color: var(--text); }
.card-body h3 a:hover { color: var(--primary); }
.card-body p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
  font-size: 0.82rem;
  color: var(--text-light);
}
.card-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.card-meta i { font-size: 0.75rem; }

/* ===== Featured Block ===== */
.featured-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}
.featured-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--border-light);
}
.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.featured-block:hover .featured-img img { transform: scale(1.03); }
.featured-content {
  padding: 40px 40px 40px 0;
}
.featured-content .tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(230,57,70,0.1);
  color: var(--primary);
  margin-bottom: 14px;
}
.featured-content h2 {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
}
.featured-content p {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}
.featured-content .btn { margin-top: 4px; }

/* ===== Workout Plan Cards ===== */
.plan-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  text-align: center;
}
.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.plan-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 1.5rem;
  color: #fff;
}
.plan-icon.red { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.plan-icon.blue { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); }
.plan-icon.green { background: linear-gradient(135deg, #2a9d8f, #1b7a6e); }
.plan-icon.orange { background: linear-gradient(135deg, var(--accent), #e07c3c); }
.plan-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.plan-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
}
.plan-difficulty {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 14px;
}
.plan-difficulty .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.plan-difficulty .dot.filled { background: var(--primary); }
.plan-difficulty .dot.filled.light { background: var(--primary-light); }
.plan-card .btn { width: 100%; justify-content: center; }

/* ===== Steps / Process ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-item {
  text-align: center;
  position: relative;
  padding: 32px 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-item::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  margin: 0 auto 16px;
  box-shadow: 0 4px 12px rgba(230,57,70,0.3);
}
.step-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-item p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  gap: 16px;
  user-select: none;
}
.faq-question i {
  font-size: 0.85rem;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-block {
  background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity: 0.08;
  mix-blend-mode: overlay;
}
.cta-block .container { position: relative; z-index: 2; }
.cta-block h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-block p {
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  line-height: 1.6;
}
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.8);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p {
  margin: 16px 0 20px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.6);
  font-size: 1.1rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.footer h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer ul li { margin-bottom: 10px; }
.footer ul a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer ul a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-block { grid-template-columns: 1fr; }
  .featured-content { padding: 32px; }
  .hero-title { font-size: 2.4rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding: 16px 24px 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border-light);
    gap: 6px;
  }
  .nav-links.open a { width: 100%; text-align: center; }
  .nav-toggle { display: flex; }
  .nav-cta .btn span { display: none; }
  .page-hero { padding: 80px 0 60px; }
  .hero-title { font-size: 2rem; }
  .hero-desc { font-size: 1rem; }
  .hero-stats { gap: 24px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 1.75rem; }
  .card-grid { grid-template-columns: 1fr; gap: 20px; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 6px 18px; font-size: 0.82rem; }
  .cta-block { padding: 40px 24px; }
  .cta-block h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .featured-content { padding: 24px; }
  .featured-content h2 { font-size: 1.35rem; }
  .plan-card { padding: 24px 20px; }
  .hero-stat-num { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.65rem; }
  .section-title { font-size: 1.4rem; }
  .hero-stats { flex-direction: column; gap: 12px; }
  .hero-stat { display: flex; align-items: center; gap: 12px; }
  .hero-stat-num { font-size: 1.3rem; }
  .hero-stat-label { font-size: 0.8rem; margin: 0; }
  .logo-text { font-size: 1.1rem; }
  .logo-icon { width: 34px; height: 34px; font-size: 1rem; }
}