/* roulang page: index */
:root{
  --primary:#e63946;--primary-dark:#b71c2c;--primary-light:#ff6b6b;
  --secondary:#1e40af;--secondary-light:#3b82f6;
  --dark:#0a0e1a;--dark-2:#131a2b;--dark-3:#1b2438;
  --text:#1e293b;--text-light:#64748b;--text-lighter:#94a3b8;
  --border:#e2e8f0;--bg-light:#f6f8fc;--white:#fff;
  --radius:14px;--radius-lg:22px;
  --shadow-sm:0 2px 12px rgba(2,12,27,.06);
  --shadow:0 6px 30px rgba(2,12,27,.10);
  --shadow-lg:0 16px 50px rgba(2,12,27,.16);
  --transition:all .3s cubic-bezier(.25,.8,.25,1);
  --font:"Inter","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:#fff;color:var(--text);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:var(--transition)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:clamp(3.5rem,7vw,5.5rem) 0}
.section-tight{padding:clamp(2.5rem,4vw,3.5rem) 0}
.section-header{text-align:center;max-width:680px;margin:0 auto 3rem}
.section-tag{display:inline-block;background:rgba(230,57,70,.1);color:var(--primary);font-size:.8rem;font-weight:700;letter-spacing:.06em;padding:.35rem 1rem;border-radius:30px;text-transform:uppercase;margin-bottom:.8rem}
.section-title{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;line-height:1.25;color:var(--dark);letter-spacing:-.02em}
.section-subtitle{font-size:1.05rem;color:var(--text-light);margin-top:.6rem}
/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.8rem;border-radius:50px;font-weight:700;font-size:.95rem;border:2px solid transparent;cursor:pointer;transition:var(--transition);text-align:center;line-height:1.4}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 20px rgba(230,57,70,.35)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(230,57,70,.45)}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.15);transform:translateY(-2px)}
.btn-dark{border-color:var(--dark);color:var(--dark);background:transparent}
.btn-dark:hover{background:var(--dark);color:#fff;transform:translateY(-2px)}
.btn-large{padding:1rem 2.4rem;font-size:1.05rem}
/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.3);box-shadow:0 2px 15px rgba(2,12,27,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:0 24px;height:72px}
.logo{font-size:1.5rem;font-weight:800;color:var(--dark);display:flex;align-items:center;gap:.5rem}
.logo span{color:var(--primary)}
.logo-badge{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem;font-weight:900;box-shadow:0 4px 12px rgba(230,57,70,.3)}
.main-nav{display:flex;align-items:center;gap:.4rem}
.nav-list{display:flex;align-items:center;gap:.2rem;list-style:none;margin:0}
.nav-link{display:block;padding:.55rem 1.1rem;font-weight:600;font-size:.92rem;color:var(--text-light);border-radius:8px;transition:var(--transition)}
.nav-link:hover{color:var(--primary);background:rgba(230,57,70,.08)}
.nav-link.active{color:var(--primary);background:rgba(230,57,70,.1);font-weight:700}
.nav-cta{margin-left:.8rem}
.nav-cta .btn{padding:.55rem 1.4rem;font-size:.88rem}
.menu-toggle{display:none;background:none;border:none;width:44px;height:44px;border-radius:8px;cursor:pointer;align-items:center;justify-content:center;color:var(--dark)}
.menu-toggle i{font-size:1.4rem}
/* Hero */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;justify-content:center;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;isolation:isolate;padding:120px 0 80px}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,14,26,.92) 0%,rgba(10,14,26,.75) 50%,rgba(230,57,70,.35) 100%);z-index:-1}
.hero-content{width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;padding:.4rem 1.2rem;border-radius:30px;font-size:.85rem;font-weight:600;backdrop-filter:blur(6px);margin-bottom:1.2rem}
.hero-badge i{color:var(--primary-light)}
.hero-title{font-size:clamp(2.6rem,5.5vw,4.2rem);font-weight:900;color:#fff;line-height:1.15;letter-spacing:-.02em;margin:0 0 1rem;max-width:760px}
.hero-title span{color:var(--primary-light)}
.hero-subtitle{font-size:clamp(1rem,1.6vw,1.3rem);color:rgba(255,255,255,.8);max-width:620px;line-height:1.7;margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-bottom:3rem}
.hero-stats{display:flex;flex-wrap:wrap;gap:2.5rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.15)}
.hero-stat .num{font-size:1.9rem;font-weight:900;color:#fff;line-height:1.2}
.hero-stat .label{font-size:.85rem;color:rgba(255,255,255,.6)}
/* Feature Cards */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.feature-card{background:var(--white);border:1px solid var(--border);border-radius:18px;padding:2.2rem 2rem;box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden}
.feature-card::after{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--transition)}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:transparent}
.feature-card:hover::after{opacity:1}
.feature-icon{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,rgba(230,57,70,.15),rgba(30,64,175,.15));display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:var(--primary);margin-bottom:1.3rem;transition:var(--transition)}
.feature-card:hover .feature-icon{transform:scale(1.1);background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}
.feature-title{font-size:1.2rem;font-weight:800;color:var(--dark);margin-bottom:.5rem}
.feature-text{font-size:.95rem;color:var(--text-light);line-height:1.7}
/* Category Cards */
.categories-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.category-card{position:relative;border-radius:20px;overflow:hidden;background:var(--dark-2);box-shadow:var(--shadow);transition:var(--transition);min-height:340px;display:flex;align-items:flex-end}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.45;transition:var(--transition)}
.category-card:hover img{opacity:.3;transform:scale(1.05)}
.category-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(10,14,26,.9) 100%);z-index:1}
.category-body{position:relative;z-index:2;padding:2rem;color:#fff}
.category-body h3{font-size:1.5rem;font-weight:800;margin-bottom:.4rem}
.category-body p{font-size:.92rem;color:rgba(255,255,255,.75);margin-bottom:1rem;line-height:1.6}
.category-tags{display:flex;flex-wrap:wrap;gap:.5rem}
.category-tags .tag{background:rgba(255,255,255,.15);color:#fff;font-size:.75rem;padding:.25rem .8rem;border-radius:30px;font-weight:600;backdrop-filter:blur(4px)}
.category-card .link-arrow{position:absolute;top:1.5rem;right:1.5rem;z-index:2;width:44px;height:44px;background:rgba(255,255,255,.15);backdrop-filter:blur(8px);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.9rem;transition:var(--transition)}
.category-card:hover .link-arrow{background:var(--primary);transform:rotate(-45deg)}
/* News List */
.news-section{background:var(--bg-light)}
.news-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1.5rem}
.news-card{background:#fff;border-radius:16px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.news-thumb{position:relative;height:140px;overflow:hidden;background:var(--dark-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.news-card:hover .news-thumb img{transform:scale(1.08)}
.news-body{padding:1.2rem 1.2rem 1.4rem;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:.5rem;font-size:.75rem;color:var(--text-lighter);margin-bottom:.5rem;flex-wrap:wrap}
.news-meta .badge{background:rgba(230,57,70,.1);color:var(--primary);font-weight:700;font-size:.7rem;padding:.15rem .6rem;border-radius:30px}
.news-title{font-size:.95rem;font-weight:700;color:var(--dark);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title:hover{color:var(--primary)}
.news-excerpt{font-size:.85rem;color:var(--text-light);margin-top:.4rem;display:-webkit-box;-webkit-line-clamp:2;overflow:hidden}
@media(max-width:1024px){
  .news-grid{grid-template-columns:repeat(3,1fr)}
  .features-grid,.categories-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .features-grid,.categories-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .news-grid{grid-template-columns:1fr}
}
/* Dark band / stats */
.stats-band{background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;position:relative;padding:5rem 0;isolation:isolate}
.stats-band::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,14,26,.95),rgba(30,64,175,.85));z-index:-1}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.stat-item .num{font-size:2.6rem;font-weight:900;color:#fff;line-height:1.2}
.stat-item .num small{font-size:1.1rem;color:rgba(255,255,255,.6)}
.stat-item .label{font-size:.9rem;color:rgba(255,255,255,.7);margin-top:.2rem}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
/* Process */
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem}
.step-item{position:relative;padding:2rem 1.2rem;text-align:center;background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-sm);transition:var(--transition)}
.step-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}
.step-number{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;font-weight:900;font-size:1.2rem;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;box-shadow:0 4px 15px rgba(230,57,70,.3)}
.step-title{font-size:1.05rem;font-weight:800;color:var(--dark);margin-bottom:.4rem}
.step-text{font-size:.85rem;color:var(--text-light);line-height:1.6}
@media(max-width:768px){.process-steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.process-steps{grid-template-columns:1fr}}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:1rem;max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:var(--transition);box-shadow:var(--shadow-sm)}
.faq-item:hover{border-color:rgba(230,57,70,.3)}
.faq-item.active{box-shadow:var(--shadow)}
.faq-question{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.2rem 1.5rem;cursor:pointer;background:none;border:none;width:100%;text-align:left;font-weight:700;font-size:1rem;color:var(--dark)}
.faq-question i{color:var(--primary);font-size:.9rem;transition:var(--transition);flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{padding:0 1.5rem;max-height:0;overflow:hidden;transition:all .4s ease;font-size:.95rem;color:var(--text-light);line-height:1.7}
.faq-item.active .faq-answer{padding:0 1.5rem 1.3rem;max-height:400px}
/* CTA */
.cta-section{background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;position:relative;padding:5rem 0;isolation:isolate}
.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(230,57,70,.9),rgba(183,28,44,.85));z-index:-1}
.cta-content{text-align:center;max-width:640px;margin:0 auto}
.cta-title{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:900;color:#fff;margin-bottom:.8rem}
.cta-text{font-size:1.05rem;color:rgba(255,255,255,.85);margin-bottom:2rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}
.cta-actions .btn-primary{background:#fff;color:var(--primary);box-shadow:none}
.cta-actions .btn-primary:hover{background:var(--dark);color:#fff}
/* Footer */
.site-footer{background:var(--dark);padding-top:4rem;color:rgba(255,255,255,.7)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:3rem;padding-bottom:3rem}
.footer-brand{max-width:340px}
.footer-logo{font-size:1.5rem;font-weight:900;color:#fff;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.footer-logo .logo-badge{background:linear-gradient(135deg,var(--primary),var(--primary-dark))}
.footer-brand p{font-size:.9rem;line-height:1.7;color:rgba(255,255,255,.6)}
.footer-heading{font-size:1rem;font-weight:700;color:#fff;margin-bottom:1.2rem}
.footer-links li{margin-bottom:.6rem}
.footer-links a{font-size:.9rem;color:rgba(255,255,255,.6);transition:var(--transition)}
.footer-links a:hover{color:var(--primary-light);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.2rem 0;text-align:center;font-size:.8rem;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.7)}
/* Breadcrumb */
.breadcrumb{background:var(--bg-light);padding:6.5rem 0 1.5rem;border-bottom:1px solid var(--border)}
.breadcrumb-inner{font-size:.9rem;color:var(--text-light)}
.breadcrumb-inner a:hover{color:var(--primary)}
.breadcrumb-inner i{font-size:.7rem;margin:0 .5rem}
/* Page Banner */
.page-banner{position:relative;padding:7rem 0 3rem;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;isolation:isolate}
.page-banner::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,14,26,.92),rgba(30,64,175,.7));z-index:-1}
.page-banner h1{font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:900;color:#fff}
.page-banner p{color:rgba(255,255,255,.8);margin-top:.5rem;max-width:560px}
/* Article Details */
.article-wrapper{max-width:860px;margin:0 auto}
.article-header{padding:2rem 0 1.5rem;border-bottom:1px solid var(--border)}
.article-header h1{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:900;color:var(--dark);line-height:1.35;letter-spacing:-.01em}
.article-meta{display:flex;flex-wrap:wrap;gap:1.2rem;margin-top:1rem;font-size:.9rem;color:var(--text-light)}
.article-meta i{color:var(--primary);margin-right:.3rem}
.article-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.article-tags .tag{background:rgba(230,57,70,.1);color:var(--primary);font-size:.8rem;padding:.3rem 1rem;border-radius:30px;font-weight:600}
.article-content{padding:2rem 0;font-size:1.02rem;line-height:1.8;color:var(--text)}
.article-content p{margin-bottom:1.5rem}
.article-content h2,.article-content h3{color:var(--dark);font-weight:800;margin-top:2rem;margin-bottom:1rem}
.article-content ul,.article-content ol{margin-left:1.4rem;margin-bottom:1.5rem}
.article-content li{margin-bottom:.5rem}
.article-content img{border-radius:14px;margin:1.5rem 0}
.article-content blockquote{border-left:4px solid var(--primary);padding:.8rem 1.4rem;background:rgba(230,57,70,.05);border-radius:0 10px 10px 0;color:var(--text-light);margin:1.5rem 0;font-style:italic}
.article-nav{display:flex;justify-content:space-between;gap:1rem;padding:1.5rem 0;border-top:1px solid var(--border);margin-top:2rem}
.article-nav a{font-size:.9rem;color:var(--text-light);border:1px solid var(--border);padding:.6rem 1.4rem;border-radius:10px;transition:var(--transition);display:inline-flex;align-items:center;gap:.5rem}
.article-nav a:hover{color:var(--primary);border-color:var(--primary)}
/* Category page cards */
.cat-list{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
.cat-post{display:flex;background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition)}
.cat-post:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.cat-post .thumb{width:180px;min-height:170px;background:var(--dark-2);overflow:hidden;flex-shrink:0}
.cat-post .thumb img{width:100%;height:100%;object-fit:cover}
.cat-post .body{padding:1.5rem;display:flex;flex-direction:column;justify-content:center}
.cat-post .body h3{font-size:1.1rem;font-weight:800;color:var(--dark);margin-bottom:.4rem}
.cat-post .body p{font-size:.85rem;color:var(--text-light);line-height:1.6;margin-bottom:.6rem}
.cat-post .body .meta{font-size:.8rem;color:var(--text-lighter)}
@media(max-width:768px){
  .cat-list{grid-template-columns:1fr}
  .cat-post{flex-direction:column}
  .cat-post .thumb{width:100%;height:160px}
}
/* Responsive */
@media(max-width:1024px){
  .header-inner{padding:0 20px}
  .nav-list{gap:.1rem}
  .nav-link{padding:.5rem .8rem;font-size:.88rem}
  .hero{min-height:80vh}
  .hero-stats{gap:1.5rem}
  .cta-actions{flex-direction:column;align-items:center}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
}
@media(max-width:768px){
  .menu-toggle{display:flex}
  .main-nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:1rem 24px;box-shadow:0 8px 30px rgba(0,0,0,.1);transform:translateY(-150%);transition:transform .4s ease;max-height:calc(100vh - 90px);overflow-y:auto;border-bottom:1px solid var(--border)}
  .main-nav.open{transform:translateY(0)}
  .nav-list{flex-direction:column;align-items:stretch;width:100%}
  .nav-link{padding:.8rem 1rem;border-radius:8px;font-size:1rem}
  .nav-link:hover{background:rgba(230,57,70,.08)}
  .nav-cta{margin:.8rem 0 0;width:100%}
  .nav-cta .btn{width:100%}
  .hero{min-height:auto;padding:130px 0 60px}
  .hero-title{font-size:clamp(2rem,6vw,3rem)}
  .hero-stats{gap:1.2rem;flex-direction:column}
  .hero-stat .num{font-size:1.6rem}
  .features-grid,.categories-grid,.process-steps{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-brand{max-width:none}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .header-inner{padding:0 16px;height:64px}
  .logo{font-size:1.3rem}
  .hero{padding:120px 0 50px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .btn-large{padding:.9rem 1.6rem}
  .section{padding:3rem 0}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category1 */
:root {
  --primary: #102a43;
  --primary-dark: #0a1f33;
  --primary-light: #1c3f62;
  --accent: #c9a55c;
  --accent-dark: #b08a3e;
  --accent-soft: #f7efe0;
  --bg: #f5f7fa;
  --white: #ffffff;
  --text: #1e2d3d;
  --text-weak: #5c6b7a;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 12px 36px rgba(16,42,67,.08);
  --shadow-hover: 0 18px 48px rgba(16,42,67,.14);
  --space-section: 96px;
  --space-section-sm: 64px;
  --header-h: 78px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-family);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: var(--accent-dark);
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
  font-size: inherit;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: .95rem;
  line-height: 1.2;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(16,42,67,.18);
}
.btn-primary:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(16,42,67,.24);
}
.btn-accent {
  background: var(--accent);
  color: #1a2a3d;
  box-shadow: 0 6px 18px rgba(201,165,92,.22);
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(176,138,62,.3);
}
.btn-outline {
  border-color: rgba(255,255,255,.55);
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,.1);
  color: #fff;
  transform: translateY(-2px);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 6px 18px rgba(0,0,0,.1);
}
.btn-light:hover {
  background: var(--accent-soft);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ===== Badge / Tag ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: .82rem;
  font-weight: 700;
  white-space: nowrap;
}
.badge-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,.4);
  color: #fff;
  padding: 5px 14px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(16,42,67,.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--primary);
  letter-spacing: .3px;
}
.brand:hover {
  color: var(--primary);
  opacity: .92;
}
.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  box-shadow: 0 4px 14px rgba(16,42,67,.22);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 6px;
}
.nav-link {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  font-size: .94rem;
  color: var(--text);
  line-height: 1.3;
  transition: all .2s ease;
}
.nav-link:hover {
  color: var(--primary);
  background: #f0f4f8;
}
.nav-link.active {
  color: var(--primary);
  background: var(--accent-soft);
}
.nav-cta .btn {
  padding: 10px 20px;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.35rem;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 10px;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 120px 0 130px;
  background: var(--primary-dark) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(10,28,46,.9) 30%, rgba(16,42,67,.68) 72%);
}
.page-hero::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,165,92,.18), transparent 65%);
  top: -120px;
  right: -80px;
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}
.hero-badge-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.18;
  margin: 0 0 18px;
  letter-spacing: -.5px;
}
.hero-title span {
  color: var(--accent);
}
.hero-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255,255,255,.82);
  margin-bottom: 34px;
  max-width: 640px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== Section ===== */
.section {
  padding: var(--space-section) 0;
}
.section-alt {
  background: var(--bg);
}
.section-dark {
  background: var(--primary-dark);
}
.section-header {
  max-width: 720px;
  margin-bottom: 52px;
}
.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-kicker {
  display: inline-block;
  font-size: .85rem;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin: 0 0 14px;
  letter-spacing: -.3px;
}
.section-desc {
  color: var(--text-weak);
  font-size: 1.05rem;
  line-height: 1.75;
  margin: 0;
}

/* ===== Intro / Feature Split ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}
.intro-content h2 {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0 0 20px;
  line-height: 1.3;
}
.intro-content p {
  color: var(--text-weak);
  font-size: 1.02rem;
  line-height: 1.8;
  margin-bottom: 16px;
}
.intro-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}
.intro-feature {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  transition: all .25s ease;
}
.intro-feature:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.intro-feature i {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 10px;
}
.intro-feature h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
}
.intro-feature p {
  font-size: .88rem;
  color: var(--text-weak);
  line-height: 1.6;
  margin: 0;
}
.intro-media {
  position: relative;
}
.intro-media img {
  border-radius: 24px;
  box-shadow: var(--shadow-hover);
}
.intro-media-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  padding: 16px 24px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 14px;
}
.intro-media-badge i {
  font-size: 1.8rem;
  color: var(--accent);
}
.intro-media-badge strong {
  display: block;
  font-size: .95rem;
  color: var(--primary);
  line-height: 1.3;
}
.intro-media-badge span {
  font-size: .8rem;
  color: var(--text-weak);
}

/* ===== Guide Cards ===== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.guide-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.guide-card-img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}
.guide-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.guide-card:hover .guide-card-img img {
  transform: scale(1.05);
}
.guide-card-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.guide-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.card-date {
  font-size: .84rem;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.guide-card-title {
  font-size: 1.16rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  margin: 0 0 10px;
}
.guide-card-text {
  color: var(--text-weak);
  font-size: .94rem;
  line-height: 1.7;
  flex: 1;
  margin-bottom: 0;
}
.guide-card-link {
  margin-top: 18px;
  font-weight: 700;
  color: var(--primary);
  font-size: .92rem;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: gap .2s ease, color .2s ease;
}
.guide-card-link:hover {
  gap: 11px;
  color: var(--accent-dark);
}

/* ===== Stats ===== */
.stats-section {
  position: relative;
  background: var(--primary-dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 95px 0;
  color: #fff;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10,28,46,.88);
}
.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item {
  padding: 20px;
}
.stat-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  letter-spacing: -1px;
}
.stat-num small {
  font-size: 1.3rem;
  font-weight: 700;
  margin-left: 4px;
  color: rgba(255,255,255,.65);
}
.stat-label {
  color: rgba(255,255,255,.75);
  font-size: .95rem;
  margin-top: 12px;
  letter-spacing: .5px;
}
.stat-divider {
  width: 42px;
  height: 3px;
  border-radius: 99px;
  background: var(--accent);
  margin: 14px auto 0;
}

/* ===== Tag Cloud ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 10px;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 22px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
  font-size: .92rem;
  box-shadow: 0 4px 14px rgba(16,42,67,.04);
  transition: all .25s ease;
  cursor: default;
}
.tag-chip i {
  color: var(--accent);
  font-size: .85rem;
}
.tag-chip:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(16,42,67,.08);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 32px;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(16,42,67,.04);
  transition: all .25s ease;
}
.faq-item:hover {
  box-shadow: var(--shadow);
  border-color: rgba(201,165,92,.5);
}
.faq-q {
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.faq-q i {
  color: var(--accent);
  font-size: 1.2rem;
}
.faq-a {
  padding-left: 36px;
  color: var(--text-weak);
  line-height: 1.8;
  font-size: .95rem;
}

/* ===== CTA ===== */
.cta-box {
  background: var(--white);
  border-radius: 24px;
  padding: 54px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  border: 1px solid var(--border);
  align-items: center;
}
.cta-copy h2 {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0 0 16px;
  line-height: 1.3;
}
.cta-copy p {
  color: var(--text-weak);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 24px;
}
.cta-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.subscribe-box {
  background: var(--primary);
  border-radius: 20px;
  padding: 34px;
  color: #fff;
}
.subscribe-box h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 8px;
}
.subscribe-box p {
  color: rgba(255,255,255,.7);
  font-size: .92rem;
  margin-bottom: 20px;
  line-height: 1.6;
}
.subscribe-form {
  display: flex;
  gap: 10px;
}
.subscribe-form input[type="email"] {
  flex: 1;
  padding: 13px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.1);
  color: #fff;
  font-size: .92rem;
  min-width: 0;
  outline: none;
  transition: border-color .2s;
}
.subscribe-form input[type="email"]::placeholder {
  color: rgba(255,255,255,.4);
}
.subscribe-form input[type="email"]:focus {
  border-color: var(--accent);
}
.subscribe-form .btn {
  padding: 13px 20px;
}
.form-note {
  font-size: .82rem;
  color: rgba(255,255,255,.45);
  margin-top: 14px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.8);
  padding-top: 70px;
  padding-bottom: 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 46px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
}
.footer-brand .logo-badge {
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: var(--primary-dark);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.footer-brand p {
  color: rgba(255,255,255,.55);
  font-size: .92rem;
  line-height: 1.8;
  max-width: 360px;
  margin-bottom: 0;
}
.footer-heading {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links li {
  margin-bottom: 12px;
}
.footer-links a {
  color: rgba(255,255,255,.6);
  font-size: .92rem;
  display: inline-flex;
  align-items: center;
  transition: color .2s ease, transform .2s ease;
}
.footer-links a:hover {
  color: var(--accent);
  transform: translateX(3px);
}
.footer-bottom {
  padding-top: 30px;
  text-align: center;
}
.footer-bottom p {
  font-size: .85rem;
  color: rgba(255,255,255,.4);
  margin: 0;
}
.footer-bottom a {
  color: rgba(255,255,255,.55);
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .stats-grid {
    gap: 20px;
  }
  .stat-num {
    font-size: 2.4rem;
  }
  .intro-grid {
    gap: 44px;
  }
  .cta-box {
    padding: 40px;
    gap: 32px;
  }
  .footer-grid {
    gap: 32px;
  }
}

@media (max-width: 899px) {
  :root {
    --space-section: 72px;
  }
  .site-header {
    position: sticky;
  }
  .nav-toggle {
    display: block;
  }
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 90px 28px 40px;
    box-shadow: -10px 0 40px rgba(0,0,0,.1);
    transition: right .3s ease;
    z-index: 199;
    overflow-y: auto;
  }
  .main-nav.open {
    right: 0;
  }
  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 4px;
  }
  .nav-link {
    display: block;
    padding: 13px 16px;
    font-size: 1rem;
  }
  .nav-cta {
    margin-top: 18px;
    width: 100%;
  }
  .nav-cta .btn {
    width: 100%;
  }
  .hero-title {
    font-size: 2.4rem;
  }
  .intro-grid {
    grid-template-columns: 1fr;
  }
  .intro-media {
    order: -1;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
  }
  .cta-box {
    grid-template-columns: 1fr;
    padding: 34px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --space-section: 56px;
  }
  .page-hero {
    padding: 84px 0 92px;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-text {
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.7rem;
  }
  .section-header {
    margin-bottom: 36px;
  }
  .guide-grid {
    grid-template-columns: 1fr;
  }
  .intro-features {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .stat-num {
    font-size: 2rem;
  }
  .tag-cloud {
    gap: 10px;
  }
  .faq-item {
    padding: 22px 20px;
  }
  .faq-a {
    padding-left: 0;
  }
  .cta-box {
    padding: 26px 20px;
  }
  .subscribe-form {
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .footer-bottom p {
    font-size: .78rem;
  }
}

@media (max-width: 399px) {
  .hero-actions .btn {
    width: 100%;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: article */
:root{
    --primary:#0f4c81;
    --primary-dark:#0a3a66;
    --primary-light:#e7f0f8;
    --accent:#f59e0b;
    --accent-dark:#d97706;
    --teal:#0ea5a4;
    --success:#16a34a;
    --ink:#0f172a;
    --body:#334155;
    --muted:#64748b;
    --line:#e2e8f0;
    --bg:#f6f8fb;
    --surface:#ffffff;
    --radius:16px;
    --radius-sm:10px;
    --shadow-xs:0 1px 2px rgba(15,23,42,.05);
    --shadow-sm:0 2px 8px rgba(15,23,42,.06);
    --shadow-md:0 10px 26px rgba(15,23,42,.08);
    --shadow-lg:0 20px 46px rgba(15,23,42,.14);
    --space-1:.5rem;
    --space-2:1rem;
    --space-3:1.5rem;
    --space-4:2.5rem;
    --space-5:4rem;
    --space-6:6rem;
  }
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    font-size:16px;
    line-height:1.7;
    color:var(--body);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;height:auto;display:block}
  a{color:inherit;text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease}
  ul,ol{list-style:none}
  button,input,textarea{font-family:inherit;font-size:inherit}
  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 24px;
  }
  .grid-x{max-width:100%}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:.55rem;
    padding:.72rem 1.55rem;
    border-radius:999px;
    font-weight:600;
    font-size:.95rem;
    line-height:1.2;
    border:2px solid transparent;
    cursor:pointer;
    transition:all .25s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(15,76,129,.25)}
  .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(15,76,129,.32)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(15,76,129,.2)}
  .btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(245,158,11,.28)}
  .btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(217,119,6,.32)}
  .btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
  .btn-outline:hover{background:var(--primary);border-color:var(--primary);color:#fff}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
  .btn-outline-light:hover{background:#fff;border-color:#fff;color:var(--primary)}
  .btn:focus-visible,.nav-link:focus-visible,a:focus-visible{outline:3px solid rgba(245,158,11,.55);outline-offset:2px}
  a:focus-visible{outline:3px solid rgba(245,158,11,.55);outline-offset:2px}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:relative;
    z-index:200;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-xs);
  }
  .header-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    min-height:78px;
  }
  .brand-logo{
    display:inline-flex;
    align-items:center;
    gap:11px;
    font-size:1.28rem;
    font-weight:800;
    letter-spacing:.02em;
    color:var(--ink);
    flex-shrink:0;
  }
  .logo-badge{
    width:42px;
    height:42px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:linear-gradient(135deg,var(--primary),var(--teal));
    color:#fff;
    border-radius:13px;
    font-size:1.1rem;
    box-shadow:0 6px 16px rgba(15,76,129,.28);
  }
  .main-nav{
    display:flex;
    align-items:center;
    gap:8px;
  }
  .nav-list{
    display:flex;
    align-items:center;
    gap:6px;
  }
  .nav-link{
    display:block;
    padding:.55rem 1.05rem;
    border-radius:999px;
    font-size:.95rem;
    font-weight:600;
    color:var(--body);
    position:relative;
  }
  .nav-link:hover{color:var(--primary);background:var(--primary-light)}
  .nav-link.active{color:var(--primary);background:var(--primary-light)}
  .nav-link.active::after{
    content:"";
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    bottom:1px;
    width:5px;
    height:5px;
    border-radius:50%;
    background:var(--accent);
  }
  .nav-toggle{
    display:none;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:44px;
    height:44px;
    border:1px solid var(--line);
    background:#fff;
    border-radius:12px;
    cursor:pointer;
    padding:10px;
    transition:border-color .25s ease,background .25s ease;
  }
  .nav-toggle span{
    display:block;
    height:2px;
    width:100%;
    background:var(--primary);
    border-radius:2px;
    transition:transform .3s ease,opacity .3s ease;
  }
  .nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.active span:nth-child(2){opacity:0}
  .nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-toggle:focus-visible{outline:3px solid rgba(245,158,11,.55);outline-offset:2px}

  /* ---------- 文章横幅 ---------- */
  .article-banner{
    position:relative;
    padding:4.8rem 0 4.2rem;
    color:#fff;
    background:
      linear-gradient(120deg,rgba(7,17,33,.93) 0%,rgba(13,58,94,.88) 55%,rgba(14,90,120,.82) 100%),
      url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    overflow:hidden;
  }
  .article-banner::before{
    content:"";
    position:absolute;
    top:-60px;
    right:-60px;
    width:280px;
    height:280px;
    background:radial-gradient(circle,rgba(245,158,11,.25),transparent 65%);
    border-radius:50%;
    pointer-events:none;
  }
  .article-banner::after{
    content:"";
    position:absolute;
    bottom:-80px;
    left:10%;
    width:320px;
    height:320px;
    background:radial-gradient(circle,rgba(14,165,164,.22),transparent 65%);
    border-radius:50%;
    pointer-events:none;
  }
  .article-banner .container{position:relative;z-index:2}
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:.5rem;
    font-size:.9rem;
    color:rgba(255,255,255,.8);
    margin-bottom:1.8rem;
    letter-spacing:.02em;
  }
  .breadcrumb a{color:rgba(255,255,255,.85)}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb .sep{color:rgba(255,255,255,.45)}
  .breadcrumb .current{color:rgba(255,255,255,.62);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .banner-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:.45rem;
    background:rgba(245,158,11,.18);
    border:1px solid rgba(245,158,11,.45);
    color:#fcd34d;
    padding:.32rem .9rem;
    border-radius:999px;
    font-size:.82rem;
    font-weight:700;
    margin-bottom:1.1rem;
    letter-spacing:.04em;
  }
  .article-banner-title{
    font-size:clamp(1.7rem,3.4vw,2.7rem);
    font-weight:800;
    line-height:1.32;
    letter-spacing:.01em;
    max-width:900px;
    margin-bottom:1.35rem;
    text-shadow:0 3px 14px rgba(0,0,0,.22);
  }
  .article-banner-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:1.7rem;
    font-size:.9rem;
    color:rgba(255,255,255,.85);
  }
  .meta-item{display:inline-flex;align-items:center;gap:.45rem}
  .meta-item i{color:#fbbf24}
  .banner-shield{
    margin-top:2rem;
    display:flex;
    gap:1rem;
    flex-wrap:wrap;
  }
  .shield-tag{
    display:inline-flex;
    align-items:center;
    gap:.45rem;
    background:rgba(255,255,255,.12);
    border:1px solid rgba(255,255,255,.2);
    padding:.4rem 1rem;
    border-radius:999px;
    font-size:.84rem;
    color:rgba(255,255,255,.92);
    backdrop-filter:blur(6px);
  }

  /* ---------- 文章主体 ---------- */
  .article-main{padding:var(--space-5) 0 0}
  .article-sheet{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
    overflow:hidden;
    margin-bottom:2rem;
  }
  .article-featured img{
    width:100%;
    max-height:420px;
    object-fit:cover;
  }
  .article-content-inner{padding:2.4rem 2.6rem 2.6rem}
  .article-meta-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:1rem;
    margin-bottom:2rem;
    padding:1.15rem 1.35rem;
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
  }
  .meta-cell{display:flex;flex-direction:column;gap:.22rem}
  .meta-cell .meta-label{font-size:.78rem;font-weight:700;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
  .meta-cell .meta-value{font-size:.92rem;font-weight:600;color:var(--ink)}
  .article-divider{height:1px;background:var(--line);margin:0 0 1.8rem}
  .article-content{
    font-size:1.04rem;
    line-height:1.95;
    color:var(--body);
    word-break:break-word;
  }
  .article-content h2{
    font-size:1.5rem;
    font-weight:800;
    color:var(--ink);
    margin:2.2rem 0 1rem;
    padding-left:.85rem;
    border-left:4px solid var(--accent);
    line-height:1.4;
  }
  .article-content h3{
    font-size:1.22rem;
    font-weight:700;
    color:var(--ink);
    margin:1.9rem 0 .85rem;
    line-height:1.45;
  }
  .article-content h4{
    font-size:1.05rem;
    font-weight:700;
    color:var(--ink);
    margin:1.5rem 0 .6rem;
  }
  .article-content p{margin:1.15rem 0}
  .article-content ul{
    list-style:disc;
    padding-left:1.6rem;
    margin:1.15rem 0;
  }
  .article-content ol{
    list-style:decimal;
    padding-left:1.6rem;
    margin:1.15rem 0;
  }
  .article-content li{margin:.45rem 0;line-height:1.8}
  .article-content li::marker{color:var(--primary)}
  .article-content img{
    border-radius:var(--radius-sm);
    box-shadow:var(--shadow-md);
    margin:1.6rem auto;
    max-width:100%;
  }
  .article-content blockquote{
    border-left:4px solid var(--teal);
    background:var(--primary-light);
    padding:1.1rem 1.4rem;
    margin:1.6rem 0;
    border-radius:0 var(--radius-sm) var(--radius-sm) 0;
    color:var(--ink);
    font-style:normal;
  }
  .article-content blockquote p{margin:.3rem 0}
  .article-content table{
    width:100%;
    border-collapse:collapse;
    margin:1.6rem 0;
    font-size:.95rem;
  }
  .article-content th,.article-content td{
    border:1px solid var(--line);
    padding:.7rem .9rem;
    text-align:left;
  }
  .article-content th{background:var(--primary-light);font-weight:700;color:var(--ink)}
  .article-content a:not(.btn){color:var(--primary);border-bottom:1px solid rgba(15,76,129,.3)}
  .article-content a:not(.btn):hover{border-bottom-color:var(--primary)}
  .article-notfound{
    text-align:center;
    padding:3rem 1.5rem 4rem;
  }
  .notfound-icon{
    width:84px;
    height:84px;
    margin:0 auto 1.4rem;
    display:grid;
    place-items:center;
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:50%;
    color:var(--primary);
    font-size:2rem;
  }
  .article-notfound h2{font-size:1.5rem;font-weight:800;color:var(--ink);margin-bottom:.6rem}
  .article-notfound p{color:var(--muted);margin-bottom:1.8rem}
  .article-foot{
    border-top:1px solid var(--line);
    margin-top:2.2rem;
    padding-top:1.6rem;
  }
  .article-tags{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:.6rem;
    margin-bottom:1.5rem;
  }
  .tags-label{font-weight:700;color:var(--ink);font-size:.9rem;display:inline-flex;align-items:center;gap:.4rem}
  .tag-item{
    display:inline-block;
    background:var(--bg);
    border:1px solid var(--line);
    color:var(--body);
    font-size:.83rem;
    padding:.3rem .85rem;
    border-radius:999px;
    transition:all .25s ease;
  }
  .tag-item:hover{background:var(--primary);border-color:var(--primary);color:#fff}
  .article-share{
    display:flex;
    align-items:center;
    gap:.65rem;
    flex-wrap:wrap;
  }
  .share-label{font-weight:700;color:var(--ink);font-size:.9rem}
  .share-btn{
    width:40px;
    height:40px;
    display:grid;
    place-items:center;
    border-radius:50%;
    border:1px solid var(--line);
    background:#fff;
    color:var(--body);
    font-size:.95rem;
    transition:all .25s ease;
  }
  .share-btn:hover{color:#fff;transform:translateY(-3px);box-shadow:var(--shadow-md)}
  .share-btn.wechat:hover{background:#07c160;border-color:#07c160}
  .share-btn.weibo:hover{background:#e6162d;border-color:#e6162d}
  .share-btn.twitter:hover{background:#111827;border-color:#111827}

  /* ---------- 侧边栏 ---------- */
  .sidebar{padding-bottom:2rem}
  .sidebar-widget{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius);
    box-shadow:var(--shadow-xs);
    padding:1.6rem 1.5rem;
    margin-bottom:1.5rem;
    transition:box-shadow .3s ease,transform .3s ease;
  }
  .sidebar-widget:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
  .sidebar-widget-title{
    font-size:1rem;
    font-weight:800;
    color:var(--ink);
    display:flex;
    align-items:center;
    gap:.55rem;
    margin-bottom:1.25rem;
    letter-spacing:.02em;
  }
  .sidebar-widget-title::before{
    content:"";
    width:4px;
    height:18px;
    border-radius:2px;
    background:linear-gradient(180deg,var(--accent),var(--accent-dark));
  }
  .sidebar-brand{
    position:relative;
    border-radius:var(--radius);
    overflow:hidden;
    padding:1.9rem 1.6rem;
    background:
      linear-gradient(140deg,rgba(10,58,102,.94),rgba(14,90,120,.86)),
      url('/assets/images/coverpic/cover-4.png') center/cover;
    color:#fff;
    margin-bottom:1.5rem;
    box-shadow:var(--shadow-md);
  }
  .sidebar-brand h3{font-size:1.18rem;font-weight:800;margin-bottom:.55rem}
  .sidebar-brand p{font-size:.88rem;color:rgba(255,255,255,.85);margin-bottom:1.1rem;line-height:1.75}
  .sidebar-brand .brand-link{
    display:inline-flex;
    align-items:center;
    gap:.45rem;
    font-size:.86rem;
    font-weight:700;
    color:#fcd34d;
  }
  .sidebar-brand .brand-link:hover{color:#fff}
  .sidebar-post-list{display:flex;flex-direction:column}
  .sidebar-post-list li{border-bottom:1px dashed var(--line)}
  .sidebar-post-list li:last-child{border-bottom:0}
  .sidebar-post-list a{
    display:flex;
    flex-direction:column;
    gap:.28rem;
    padding:.85rem 0;
  }
  .post-title{
    font-size:.92rem;
    font-weight:600;
    color:var(--ink);
    line-height:1.5;
    transition:color .2s ease;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .sidebar-post-list a:hover .post-title{color:var(--primary)}
  .post-meta{font-size:.78rem;color:var(--muted)}
  .sidebar-cat-list{display:flex;flex-direction:column;gap:.45rem}
  .sidebar-cat-list a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:.7rem 1rem;
    border-radius:var(--radius-sm);
    background:var(--bg);
    border:1px solid var(--line);
    font-size:.9rem;
    font-weight:600;
    color:var(--body);
    transition:all .25s ease;
  }
  .sidebar-cat-list a:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateX(4px)}
  .sidebar-cat-list a i{font-size:.75rem;opacity:.7}
  .sidebar-contact{
    background:linear-gradient(140deg,var(--primary),var(--primary-dark));
    border:0;
    color:#fff;
    text-align:center;
    padding:2rem 1.5rem;
  }
  .sidebar-contact h3{font-size:1.05rem;font-weight:800;margin-bottom:.5rem}
  .sidebar-contact p{font-size:.86rem;color:rgba(255,255,255,.85);margin-bottom:1.2rem}
  .sidebar-contact .btn{width:100%}
  .sidebar-empty{padding:.8rem 0;font-size:.9rem;color:var(--muted)}

  /* ---------- 相关推荐 ---------- */
  .related-section{padding:var(--space-5) 0 var(--space-4);background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:1rem;
    margin-bottom:2.2rem;
  }
  .section-head .sec-title-mark{
    display:inline-flex;
    align-items:center;
    gap:.5rem;
    font-size:.83rem;
    font-weight:700;
    color:var(--accent-dark);
    background:rgba(245,158,11,.12);
    padding:.32rem 1rem;
    border-radius:999px;
    margin-bottom:.7rem;
    letter-spacing:.05em;
  }
  .section-title{
    font-size:clamp(1.4rem,2.4vw,1.9rem);
    font-weight:800;
    color:var(--ink);
    line-height:1.35;
  }
  .section-sub{color:var(--muted);font-size:.95rem;margin-top:.35rem}
  .section-link{
    font-size:.9rem;
    font-weight:600;
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    gap:.4rem;
    white-space:nowrap;
    padding:.5rem .9rem;
    border-radius:999px;
    border:1px solid var(--line);
    background:#fff;
    transition:all .25s ease;
  }
  .section-link:hover{background:var(--primary);border-color:var(--primary);color:#fff}
  .related-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    box-shadow:var(--shadow-xs);
    transition:transform .3s ease,box-shadow .3s ease;
    height:100%;
    display:flex;
    flex-direction:column;
  }
  .related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
  .related-card-media{
    position:relative;
    display:block;
    overflow:hidden;
    aspect-ratio:16/10;
    background:var(--primary-light);
  }
  .related-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
  .related-card:hover .related-card-media img{transform:scale(1.06)}
  .related-card-media .badge{
    position:absolute;
    top:14px;
    left:14px;
    background:rgba(255,255,255,.94);
    color:var(--primary);
    font-size:.76rem;
    font-weight:700;
    padding:.28rem .85rem;
    border-radius:999px;
    box-shadow:var(--shadow-sm);
    backdrop-filter:blur(4px);
    letter-spacing:.02em;
  }
  .related-card-body{padding:1.35rem 1.4rem 1.5rem;display:flex;flex-direction:column;gap:.55rem;flex:1}
  .related-card-title{font-size:1rem;font-weight:700;color:var(--ink);line-height:1.5;margin:0}
  .related-card-title a{transition:color .2s ease}
  .related-card-title a:hover{color:var(--primary)}
  .related-card-meta{font-size:.8rem;color:var(--muted);margin-top:auto;display:flex;align-items:center;gap:.4rem}

  /* ---------- FAQ ---------- */
  .faq-section{padding:var(--space-5) 0}
  .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    padding:1.35rem 1.5rem;
    box-shadow:var(--shadow-xs);
    transition:box-shadow .25s ease,transform .25s ease;
  }
  .faq-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
  .faq-item h3{
    font-size:.98rem;
    font-weight:700;
    color:var(--ink);
    margin-bottom:.55rem;
    display:flex;
    align-items:center;
    gap:.5rem;
  }
  .faq-item h3 i{color:var(--accent);font-size:.95rem}
  .faq-item p{font-size:.9rem;color:var(--muted);line-height:1.75;margin:0}

  /* ---------- 订阅 ---------- */
  .subscribe-section{padding:0 0 var(--space-5)}
  .subscribe-box{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:1.8rem;
    flex-wrap:wrap;
    background:linear-gradient(120deg,var(--primary-dark),var(--primary));
    border-radius:var(--radius);
    padding:2.2rem 2.6rem;
    color:#fff;
    box-shadow:var(--shadow-lg);
    position:relative;
    overflow:hidden;
  }
  .subscribe-box::before{
    content:"";
    position:absolute;
    right:-70px;
    top:-70px;
    width:200px;
    height:200px;
    background:radial-gradient(circle,rgba(245,158,11,.3),transparent 65%);
    border-radius:50%;
  }
  .subscribe-box h3{font-size:1.35rem;font-weight:800;margin-bottom:.35rem}
  .subscribe-box p{font-size:.9rem;color:rgba(255,255,255,.85);margin:0}
  .subscribe-form{
    display:flex;
    gap:.6rem;
    flex-wrap:wrap;
    position:relative;
    z-index:2;
  }
  .subscribe-form input{
    width:280px;
    max-width:100%;
    border:1px solid rgba(255,255,255,.3);
    background:rgba(255,255,255,.14);
    color:#fff;
    border-radius:999px;
    padding:.7rem 1.3rem;
    font-size:.92rem;
    outline:none;
    transition:border-color .25s ease,background .25s ease;
  }
  .subscribe-form input::placeholder{color:rgba(255,255,255,.72)}
  .subscribe-form input:focus{background:rgba(255,255,255,.22);border-color:#fff}

  /* ---------- 联系 CTA ---------- */
  .cta-band{
    padding:var(--space-2) 0 var(--space-6);
  }
  .cta-inner{
    text-align:center;
    background:
      linear-gradient(135deg,rgba(10,58,102,.95),rgba(6,24,48,.93)),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-radius:var(--radius);
    padding:4rem 2.5rem;
    color:#fff;
    position:relative;
    overflow:hidden;
    box-shadow:var(--shadow-lg);
  }
  .cta-inner::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:-70px;
    transform:translateX(-50%);
    width:300px;
    height:160px;
    background:radial-gradient(ellipse,rgba(245,158,11,.24),transparent 65%);
    border-radius:50%;
    pointer-events:none;
  }
  .cta-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:.45rem;
    font-size:.83rem;
    font-weight:700;
    letter-spacing:.08em;
    color:#fcd34d;
    border:1px solid rgba(245,158,11,.5);
    background:rgba(245,158,11,.14);
    padding:.35rem 1.15rem;
    border-radius:999px;
    margin-bottom:1.3rem;
  }
  .cta-inner h2{
    font-size:clamp(1.5rem,2.8vw,2.2rem);
    font-weight:800;
    margin-bottom:.8rem;
    line-height:1.4;
  }
  .cta-inner p{font-size:1rem;color:rgba(255,255,255,.85);max-width:620px;margin:0 auto 2rem;line-height:1.8}
  .cta-actions{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#0b1a2e;
    color:#9fb3c8;
    padding:3.8rem 0 0;
    font-size:.9rem;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr;
    gap:2.5rem;
    padding-bottom:2.5rem;
  }
  .footer-logo{
    display:flex;
    align-items:center;
    gap:.6rem;
    font-size:1.14rem;
    font-weight:800;
    color:#fff;
    margin-bottom:1rem;
  }
  .footer-logo .logo-badge{width:36px;height:36px;font-size:.95rem;border-radius:10px}
  .footer-brand p{line-height:1.8;color:#7d92a8;max-width:360px;margin:0}
  .footer-heading{
    font-size:.95rem;
    font-weight:700;
    color:#e2e8f0;
    margin-bottom:1.1rem;
    position:relative;
    padding-bottom:.55rem;
  }
  .footer-heading::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:28px;
    height:2px;
    background:var(--accent);
    border-radius:2px;
  }
  .footer-links li{margin-bottom:.65rem}
  .footer-links a{color:#7d92a8;transition:color .25s ease,padding-left .25s ease}
  .footer-links a:hover{color:#fbbf24;padding-left:4px}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    padding:1.4rem 0;
    text-align:center;
    color:#64748b;
    font-size:.83rem;
  }
  .footer-bottom a{color:#94a3b8}
  .footer-bottom a:hover{color:#fbbf24}

  /* ---------- 响应式 ---------- */
  @media (max-width: 1100px){
    .nav-toggle{display:flex}
    .main-nav{
      position:absolute;
      top:100%;
      left:0;
      right:0;
      background:#fff;
      border-bottom:1px solid var(--line);
      box-shadow:var(--shadow-lg);
      flex-direction:column;
      align-items:stretch;
      padding:0 24px;
      max-height:0;
      overflow:hidden;
      transition:max-height .4s ease;
      visibility:hidden;
    }
    .main-nav.nav-open{
      max-height:calc(100vh - 80px);
      overflow-y:auto;
      visibility:visible;
    }
    .nav-list{
      flex-direction:column;
      align-items:stretch;
      gap:6px;
      padding:18px 0 10px;
    }
    .nav-list li{width:100%}
    .nav-link{
      border-radius:var(--radius-sm);
      padding:.85rem 1rem;
      font-size:1rem;
    }
    .nav-link.active::after{display:none}
    .nav-cta{padding:8px 0 20px}
    .nav-cta .btn{width:100%}
  }
  @media (max-width: 1024px){
    .article-banner{padding:3.8rem 0 3.2rem}
    .footer-grid{grid-template-columns:1fr 1fr}
    .sidebar{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
    .sidebar-widget{margin-bottom:0}
    .sidebar .sidebar-brand,.sidebar .sidebar-contact{grid-column:span 2}
  }
  @media (max-width: 768px){
    .container{padding:0 18px}
    .article-banner{padding:3.2rem 0 2.8rem}
    .article-content-inner{padding:1.6rem 1.3rem 1.9rem}
    .article-meta-grid{grid-template-columns:1fr;gap:.7rem}
    .faq-grid{grid-template-columns:1fr}
    .subscribe-box{padding:1.8rem 1.4rem}
    .subscribe-form{width:100%}
    .subscribe-form input{width:100%;flex:1}
    .subscribe-form .btn{width:100%;margin-top:.5rem}
    .cta-inner{padding:3rem 1.4rem}
    .site-footer{padding-top:3rem}
    .footer-grid{grid-template-columns:1fr;gap:2rem;padding-bottom:1.8rem}
  }
  @media (max-width: 520px){
    body{font-size:15px}
    .header-row{min-height:68px}
    .brand-logo{font-size:1.08rem}
    .logo-badge{width:36px;height:36px;font-size:.95rem;border-radius:11px}
    .article-banner{padding:2.8rem 0 2.4rem}
    .article-banner-meta{gap:1rem;flex-direction:column;align-items:flex-start}
    .breadcrumb{font-size:.82rem;margin-bottom:1.3rem}
    .article-content{font-size:1rem;line-height:1.85}
    .sidebar{display:block}
    .sidebar-widget{margin-bottom:1.2rem}
    .section-head{flex-direction:column;align-items:flex-start;gap:.8rem}
    .subscribe-box{text-align:left}
    .cta-actions .btn{width:100%}
    .footer-links a{font-size:.88rem}
  }

/* roulang page: category2 */
:root {
      --primary: #0e5a70;
      --primary-dark: #073a4a;
      --primary-deep: #052b38;
      --primary-light: #e1f0f4;
      --accent: #e8862e;
      --accent-dark: #cb6c1a;
      --accent-light: #fef0e4;
      --dark-band: #07242c;
      --body-bg: #f6fafb;
      --white: #ffffff;
      --text: #1b2a31;
      --text-weak: #587079;
      --border: #d8e5e9;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 9px;
      --shadow-sm: 0 2px 14px rgba(7, 36, 44, 0.06);
      --shadow-md: 0 10px 34px rgba(7, 36, 44, 0.09);
      --shadow-lg: 0 20px 50px rgba(7, 36, 44, 0.15);
      --transition: all .3s ease;
      --section-space: clamp(56px, 7vw, 96px);
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text);
      background: var(--body-bg);
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    button { border: none; background: none; cursor: pointer; font-family: inherit; }
    input, textarea, select { font-family: inherit; }

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

    /* ========== BUTTONS ========== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 15px;
      line-height: 1.4;
      transition: var(--transition);
      border: 2px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 16px rgba(14, 90, 112, .28);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(14, 90, 112, .35);
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
      box-shadow: 0 4px 16px rgba(232, 134, 46, .3);
    }
    .btn-accent:hover {
      background: var(--accent-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(232, 134, 46, .38);
    }
    .btn-light {
      background: rgba(255,255,255,.14);
      color: #fff;
      border-color: rgba(255,255,255,.38);
      backdrop-filter: blur(6px);
    }
    .btn-light:hover { background: rgba(255,255,255,.28); transform: translateY(-2px); }
    .btn:focus-visible { outline: 3px solid rgba(232,134,46,.5); outline-offset: 3px; }

    /* ========== HEADER ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255,255,255,.92);
      backdrop-filter: saturate(180%) blur(14px);
      border-bottom: 1px solid rgba(216,229,233,.7);
      box-shadow: 0 2px 18px rgba(7,36,44,.05);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 20px;
    }
    .header-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .logo-badge {
      width: 42px;
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 13px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-size: 17px;
      box-shadow: 0 4px 14px rgba(14,90,112,.3);
    }
    .logo-text {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: .02em;
      color: var(--primary-dark);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .nav-list {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      display: block;
      padding: 9px 18px;
      border-radius: 40px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      transition: var(--transition);
    }
    .nav-link:hover {
      background: var(--primary-light);
      color: var(--primary);
    }
    .nav-link.active {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(14,90,112,.24);
    }
    .nav-cta .btn { padding: 9px 22px; font-size: 14px; }
    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 18px;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }
    .nav-toggle:hover { background: var(--primary); color: #fff; }

    /* ========== SECTION ========== */
    .section { padding: var(--section-space) 0; }
    .section-bg-light { background: var(--white); }
    .section-title-wrap { text-align: center; max-width: 720px; margin: 0 auto 48px; }
    .section-tag {
      display: inline-block;
      padding: 5px 18px;
      border-radius: 40px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .06em;
      margin-bottom: 14px;
    }
    .section-title {
      font-size: clamp(26px, 3.4vw, 38px);
      font-weight: 800;
      line-height: 1.3;
      color: var(--primary-dark);
      margin-bottom: 14px;
    }
    .section-desc { font-size: 16px; color: var(--text-weak); line-height: 1.8; }

    /* ========== HERO ========== */
    .hero {
      position: relative;
      padding: clamp(80px, 10vw, 140px) 0 clamp(70px, 9vw, 120px);
      background:
        linear-gradient(120deg, rgba(5,43,56,.92) 0%, rgba(7,36,44,.76) 45%, rgba(14,90,112,.55) 100%),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      color: #fff;
      overflow: hidden;
    }
    .hero .container { position: relative; z-index: 2; }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 20px;
      border-radius: 40px;
      background: rgba(255,255,255,.14);
      border: 1px solid rgba(255,255,255,.25);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: .04em;
      backdrop-filter: blur(6px);
      margin-bottom: 22px;
    }
    .hero-title {
      font-size: clamp(34px, 5vw, 52px);
      font-weight: 900;
      line-height: 1.22;
      letter-spacing: .01em;
      margin-bottom: 18px;
    }
    .hero-title .highlight {
      background: linear-gradient(120deg, #ffb25e, #ffe0b2);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }
    .hero-desc {
      max-width: 620px;
      font-size: 17px;
      line-height: 1.85;
      color: rgba(255,255,255,.88);
      margin-bottom: 32px;
    }
    .hero-btns { display: flex; flex-wrap: wrap; gap: 14px; }
    .hero-metrics {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      margin-top: 44px;
      padding-top: 28px;
      border-top: 1px solid rgba(255,255,255,.18);
    }
    .hero-metric { text-align: center; }
    .hero-metric .metric-num {
      display: block;
      font-size: 28px;
      font-weight: 800;
      color: #ffb25e;
    }
    .hero-metric .metric-label {
      font-size: 13px;
      color: rgba(255,255,255,.75);
    }

    /* ========== SERVICE OVERVIEW ========== */
    .overview-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .overview-card {
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      padding: 30px 26px;
      text-align: center;
      transition: var(--transition);
    }
    .overview-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(14,90,112,.2);
    }
    .overview-icon {
      width: 64px;
      height: 64px;
      margin: 0 auto 18px;
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      box-shadow: 0 6px 18px rgba(14,90,112,.22);
    }
    .overview-icon.alt-1 { background: linear-gradient(135deg, #e8862e, #d4661c); box-shadow: 0 6px 18px rgba(232,134,46,.25); }
    .overview-icon.alt-2 { background: linear-gradient(135deg, #2ea187, #1e8168); box-shadow: 0 6px 18px rgba(46,161,135,.22); }
    .overview-icon.alt-3 { background: linear-gradient(135deg, #6078c9, #435bb2); box-shadow: 0 6px 18px rgba(96,120,201,.24); }
    .overview-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--primary-dark); }
    .overview-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

    /* ========== SERVICES GRID ========== */
    .services-section { position: relative; }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(14,90,112,.16);
    }
    .service-card-img {
      position: relative;
      height: 190px;
      overflow: hidden;
    }
    .service-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .service-card:hover .service-card-img img { transform: scale(1.05); }
    .service-card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(7,36,44,.24));
    }
    .service-card-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      z-index: 2;
      padding: 4px 14px;
      border-radius: 30px;
      background: rgba(255,255,255,.92);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      box-shadow: 0 2px 8px rgba(0,0,0,.1);
    }
    .service-card-body {
      padding: 24px 26px 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .service-card-body h3 { font-size: 19px; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
    .service-card-body p {
      font-size: 14px;
      color: var(--text-weak);
      line-height: 1.7;
      flex: 1;
      margin-bottom: 16px;
    }
    .service-card-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 14px;
      border-top: 1px dashed var(--border);
      font-size: 13px;
      color: var(--text-weak);
    }
    .service-card-meta a {
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }
    .service-card-meta a:hover { color: var(--accent); gap: 10px; }

    /* ========== STATS BAND ========== */
    .stats-band {
      background: var(--dark-band);
      padding: clamp(48px, 6vw, 72px) 0;
      color: #fff;
      position: relative;
      overflow: hidden;
    }
    .stats-band::before {
      content: '';
      position: absolute;
      top: -60%;
      right: -10%;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(14,90,112,.45), transparent 65%);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
      position: relative;
      z-index: 2;
    }
    .stat-item { padding: 18px 10px; }
    .stat-item .stat-num {
      font-size: clamp(30px, 4vw, 44px);
      font-weight: 800;
      color: #ffb25e;
      line-height: 1.2;
      display: block;
      margin-bottom: 6px;
    }
    .stat-item .stat-label { font-size: 14px; color: rgba(255,255,255,.82); }

    /* ========== PROCESS ========== */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: step;
    }
    .process-item {
      position: relative;
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 34px 24px 26px;
      transition: var(--transition);
    }
    .process-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .process-item::before {
      counter-increment: step;
      content: counter(step, decimal-leading-zero);
      position: absolute;
      top: 18px;
      right: 20px;
      font-size: 42px;
      font-weight: 800;
      color: var(--primary-light);
      line-height: 1;
      transition: var(--transition);
    }
    .process-item:hover::before { color: var(--accent-light); }
    .process-icon {
      width: 50px;
      height: 50px;
      border-radius: 14px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 18px;
      box-shadow: 0 4px 12px rgba(14,90,112,.2);
    }
    .process-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--primary-dark); }
    .process-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

    /* ========== INSIGHTS ========== */
    .insights-section { background: var(--white); }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: var(--body-bg);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      transition: var(--transition);
    }
    .insight-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); }
    .insight-card-img { height: 160px; overflow: hidden; }
    .insight-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
    .insight-card:hover .insight-card-img img { transform: scale(1.04); }
    .insight-body { padding: 24px; }
    .insight-date { font-size: 13px; color: var(--accent); font-weight: 700; margin-bottom: 6px; }
    .insight-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; color: var(--text); }
    .insight-body h3 a:hover { color: var(--primary); }
    .insight-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

    /* ========== FAQ ========== */
    .faq-list { max-width: 860px; margin: 0 auto; }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px 28px;
      margin-bottom: 16px;
      transition: var(--transition);
    }
    .faq-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(14,90,112,.2); }
    .faq-item summary {
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      list-style: none;
      font-size: 16px;
      font-weight: 600;
      color: var(--primary-dark);
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary i {
      color: var(--primary);
      font-size: 18px;
      transition: var(--transition);
    }
    .faq-item[open] summary i { transform: rotate(45deg); color: var(--accent); }
    .faq-panel { padding-top: 12px; font-size: 15px; color: var(--text-weak); line-height: 1.8; }

    /* ========== CTA ========== */
    .cta-section {
      position: relative;
      background: linear-gradient(120deg, var(--primary-deep), var(--primary-dark) 55%, var(--primary));
      padding: clamp(56px, 7vw, 90px) 0;
      color: #fff;
      text-align: center;
      overflow: hidden;
    }
    .cta-section::before {
      content: '';
      position: absolute;
      bottom: -60%;
      left: -8%;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(232,134,46,.28), transparent 60%);
    }
    .cta-inner { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; }
    .cta-inner h2 { font-size: clamp(25px, 3.4vw, 36px); font-weight: 800; margin-bottom: 12px; }
    .cta-inner p { font-size: 16px; color: rgba(255,255,255,.85); margin-bottom: 28px; }
    .cta-inner .btn-group { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

    /* ========== FOOTER ========== */
    .site-footer { background: var(--primary-deep); color: rgba(255,255,255,.78); padding: 64px 0 30px; }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr;
      gap: 44px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255,255,255,.1);
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }
    .footer-logo .logo-badge { width: 38px; height: 38px; font-size: 15px; border-radius: 11px; }
    .footer-logo span { font-size: 19px; font-weight: 800; color: #fff; }
    .footer-brand p { font-size: 14px; line-height: 1.85; color: rgba(255,255,255,.64); max-width: 360px; }
    .footer-heading {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a {
      font-size: 14px;
      color: rgba(255,255,255,.62);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
    }
    .footer-links a:hover { color: #ffb25e; padding-left: 5px; }
    .footer-bottom {
      text-align: center;
      padding-top: 26px;
      font-size: 13px;
      color: rgba(255,255,255,.44);
    }
    .footer-bottom a { color: rgba(255,255,255,.68); transition: var(--transition); }
    .footer-bottom a:hover { color: #ffb25e; }

    /* ========== RESPONSIVE ========== */
    @media (max-width: 1024px) {
      .overview-grid { grid-template-columns: repeat(2, 1fr); }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .insights-grid { grid-template-columns: repeat(2, 1fr); }
      .process-grid { grid-template-columns: repeat(2, 1fr); }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .header-inner { height: 64px; }
      .nav-toggle { display: flex; }
      .main-nav {
        position: fixed;
        top: 64px;
        right: -100%;
        width: 300px;
        height: calc(100vh - 64px);
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 28px 24px;
        box-shadow: -8px 0 30px rgba(7,36,44,.12);
        transition: right .35s ease;
        gap: 24px;
        z-index: 999;
      }
      .main-nav.open { right: 0; }
      .nav-list { flex-direction: column; align-items: flex-start; width: 100%; gap: 6px; }
      .nav-link { width: 100%; padding: 12px 18px; border-radius: 10px; }
      .nav-cta { width: 100%; }
      .nav-cta .btn { width: 100%; justify-content: center; }
      .hero { padding-top: 64px; }
      .hero-metrics { gap: 18px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    }

    @media (max-width: 520px) {
      .container { padding: 0 18px; }
      .overview-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .insights-grid { grid-template-columns: 1fr; }
      .process-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .footer-grid { grid-template-columns: 1fr; }
      .hero-btns .btn { width: 100%; }
      .cta-inner .btn-group .btn { width: 100%; }
    }

    /* accessibility */
    a:focus-visible, button:focus-visible {
      outline: 3px solid rgba(232,134,46,.5);
      outline-offset: 3px;
    }

/* roulang page: category3 */
:root {
  --primary: #1a4d8f;
  --primary-dark: #0f3460;
  --primary-light: #e8f0fb;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --bg: #f5f7fb;
  --white: #ffffff;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 8px 30px rgba(15, 52, 96, 0.08);
  --shadow-hover: 0 16px 45px rgba(15, 52, 96, 0.14);
  --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background: var(--white);
  color: var(--text);
  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%; display: inline-block; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }
.grid-container { max-width: 1200px; padding: 0 24px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.site-header-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .02em;
  white-space: nowrap;
}
.brand-logo:hover { color: var(--primary); }
.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text);
}
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(26,77,143,0.28);
}
.nav-cta { margin-left: 6px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 4px;
  transition: var(--transition);
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  border: 0;
  transition: var(--transition);
}
.btn i { font-size: .9rem; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 22px rgba(26,77,143,.3); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(26,77,143,.38); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary-dark); box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.btn-light:hover { background: var(--accent-light); color: var(--primary-dark); transform: translateY(-2px); }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  min-height: 460px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--primary-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .42;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(15,52,96,.96) 0%, rgba(26,77,143,.78) 55%, rgba(26,77,143,.35) 100%);
}
.hero-inner { position: relative; z-index: 2; width: 100%; }
.hero-content {
  max-width: 780px;
  padding: 5rem 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.28);
  color: #fff;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .04em;
  backdrop-filter: blur(6px);
}
.hero-content h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.15;
  color: #fff;
  margin: 1.1rem 0 1rem;
  font-weight: 800;
  text-shadow: 0 4px 24px rgba(0,0,0,.28);
}
.hero-content .lead {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,.92);
  max-width: 620px;
  line-height: 1.85;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: .85rem;
  color: rgba(255,255,255,.72);
  margin-bottom: 1.2rem;
}
.breadcrumb a { color: rgba(255,255,255,.9); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }

/* ===== Section base ===== */
.section { padding: 5rem 0; }
.section-head { max-width: 760px; margin: 0 auto 3.2rem; text-align: center; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .05em;
}
.section-title { font-size: clamp(1.8rem, 3.4vw, 2.6rem); line-height: 1.28; margin: 1rem 0 .7rem; font-weight: 800; color: var(--text); }
.section-desc { color: var(--text-muted); font-size: 1.05rem; line-height: 1.8; margin: 0; }
.section-head.light .section-title { color: #fff; }
.section-head.light .section-desc { color: rgba(255,255,255,.82); }

/* ===== Intro ===== */
.intro-section { background: var(--white); }
.intro-grid .intro-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  height: 100%;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
}
.intro-grid .intro-card:hover {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateY(-8px);
}
.intro-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 1.2rem;
  box-shadow: 0 10px 24px rgba(26,77,143,.28);
}
.intro-card h3 { font-size: 1.22rem; font-weight: 700; margin: 0 0 .7rem; }
.intro-card p { color: var(--text-muted); line-height: 1.8; margin: 0; font-size: .95rem; }

/* ===== Topics ===== */
.topics-section { background: var(--bg); }
.topic-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--border);
  transition: var(--transition);
  box-shadow: 0 2px 10px rgba(0,0,0,.02);
}
.topic-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-hover); border-color: rgba(26,77,143,.2); }
.topic-media { position: relative; height: 216px; overflow: hidden; }
.topic-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
.topic-card:hover .topic-media img { transform: scale(1.07); }
.topic-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(15,52,96,.28), transparent 60%);
}
.topic-badge {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.94);
  color: var(--primary-dark);
  font-size: .8rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}
.topic-body { padding: 1.7rem 1.6rem 1.6rem; display: flex; flex-direction: column; flex: 1; }
.topic-body h3 { font-size: 1.22rem; font-weight: 700; margin: 0 0 .6rem; color: var(--text); }
.topic-body p { color: var(--text-muted); line-height: 1.75; margin: 0 0 1.2rem; flex: 1; font-size: .95rem; }
.topic-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: .83rem;
  border-top: 1px dashed var(--border);
  padding-top: 1rem;
}
.topic-meta span i { color: var(--primary); margin-right: 4px; }

/* ===== Routes ===== */
.routes-section { position: relative; overflow: hidden; }
.routes-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.routes-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(15,52,96,.96), rgba(26,77,143,.84));
}
.routes-section .grid-container { position: relative; z-index: 2; }
.route-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.route-card:hover { transform: translateY(-8px); box-shadow: 0 20px 50px rgba(0,0,0,.28); }
.route-media { position: relative; height: 210px; overflow: hidden; }
.route-media img { width: 100%; height: 100%; object-fit: cover; }
.day-chip {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: .8rem;
  padding: 6px 14px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(245,158,11,.35);
}
.route-tag {
  position: absolute;
  left: 1rem;
  top: 1rem;
  background: rgba(255,255,255,.94);
  color: var(--primary-dark);
  font-size: .78rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
}
.route-body { padding: 1.7rem 1.6rem 1.6rem; display: flex; flex-direction: column; flex: 1; }
.route-body h3 { font-size: 1.25rem; font-weight: 700; margin: 0 0 .6rem; }
.route-body p { color: var(--text-muted); font-size: .95rem; flex: 1; line-height: 1.8; margin-bottom: 1rem; }
.route-features { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 1.3rem; }
.route-features span {
  background: var(--bg);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: .8rem;
  font-weight: 500;
}
.route-link { color: var(--primary); font-weight: 600; font-size: .95rem; }
.route-link i { transition: transform .3s ease; }
.route-link:hover i { transform: translateX(5px); }

/* ===== Stats ===== */
.stats-section { background: var(--white); }
.stats-card {
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  padding: 2.4rem 1.5rem;
  text-align: center;
  color: #fff;
  height: 100%;
  transition: var(--transition);
}
.stats-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15,52,96,.32); }
.stat-icon { font-size: 2rem; margin-bottom: .6rem; opacity: .92; }
.stat-num { font-size: clamp(2.1rem, 4vw, 3.2rem); font-weight: 800; line-height: 1.1; }
.stat-suffix { font-size: 1.4rem; font-weight: 700; margin-left: 2px; }
.stat-label { margin-top: .5rem; color: rgba(255,255,255,.8); font-size: .95rem; }

/* ===== Checklist ===== */
.checklist-section { background: var(--bg); }
.checklist-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.9rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.checklist-card h3 { font-size: 1.3rem; font-weight: 700; margin: 0 0 1.4rem; display: flex; align-items: center; gap: 10px; }
.check-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.check-item:last-child { border-bottom: 0; }
.check-item:hover { padding-left: 8px; }
.check-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}
.check-text strong { display: block; font-size: .98rem; color: var(--text); }
.check-text span { color: var(--text-muted); font-size: .93rem; line-height: 1.65; }
.checklist-side {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  height: 100%;
  min-height: 420px;
  box-shadow: var(--shadow);
}
.checklist-side img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.checklist-side::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(15,52,96,.5), transparent 55%);
}
.side-caption {
  position: absolute;
  left: 1.6rem;
  right: 1.6rem;
  bottom: 1.6rem;
  z-index: 2;
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  text-shadow: 0 2px 12px rgba(0,0,0,.3);
}

/* ===== FAQ ===== */
.faq-section { background: var(--white); }
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(26,77,143,.35); }
.faq-item.active { background: var(--white); border-color: var(--primary); box-shadow: var(--shadow); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 1.3rem 1.6rem;
  font-size: 1.02rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}
.faq-icon {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .45s ease; }
.faq-item.active .faq-answer { max-height: 480px; }
.faq-answer-inner {
  padding: 0 1.6rem 1.5rem;
  color: var(--text-muted);
  line-height: 1.85;
  font-size: .96rem;
}

/* ===== CTA ===== */
.cta-section { padding: 4rem 0 5rem; background: var(--bg); }
.cta-wrapper {
  background: linear-gradient(120deg, rgba(15,52,96,.94), rgba(26,77,143,.84)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-wrapper h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 800; margin: 0 0 1rem; }
.cta-wrapper p { color: rgba(255,255,255,.85); max-width: 560px; margin: 0 auto 2.2rem; font-size: 1.05rem; line-height: 1.8; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 1.6rem; }
.newsletter-form {
  max-width: 520px;
  margin: 1.8rem auto 0;
  display: flex;
  gap: 10px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  padding: 6px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.newsletter-form input {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 12px 18px;
  color: #fff;
  font-size: .95rem;
  outline: none;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,.6); }
.newsletter-form .btn { white-space: nowrap; }

/* ===== Footer ===== */
.site-footer {
  background: #0d1b2e;
  color: #d6dde6;
  padding: 4.5rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2.8rem;
}
.footer-brand p { margin: 1.2rem 0 0; color: rgba(255,255,255,.68); font-size: .95rem; line-height: 1.8; max-width: 380px; }
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
}
.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #5b8def);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.footer-heading { color: #fff; font-size: 1rem; font-weight: 700; margin: 0 0 1.2rem; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,.66); font-size: .95rem; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 1.6rem 0;
  text-align: center;
  color: rgba(255,255,255,.45);
  font-size: .88rem;
}
.footer-bottom a { color: rgba(255,255,255,.7); }
.footer-bottom a:hover { color: #fff; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 4.2rem 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .site-header-inner { padding: 10px 18px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 64px;
    right: -100%;
    width: min(320px, 88vw);
    height: calc(100vh - 64px);
    flex-direction: column;
    align-items: stretch;
    background: var(--white);
    box-shadow: -12px 0 30px rgba(15,52,96,.12);
    padding: 2rem 1.6rem;
    transition: right .38s cubic-bezier(.4,0,.2,1);
    z-index: 999;
    border-radius: 24px 0 0 24px;
  }
  .main-nav.open { right: 0; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 6px; width: 100%; }
  .nav-link { display: block; text-align: center; padding: 12px 16px; }
  .nav-cta { margin: 18px 0 0; }
  .nav-cta .btn { width: 100%; }
  .grid-container { padding: 0 18px; }
  .hero-content { padding: 4rem 0; }
  .page-hero { min-height: 420px; }
  .section-head { margin-bottom: 2.4rem; }
  .topic-media { height: 190px; }
  .route-media { height: 180px; }
  .checklist-card { margin-bottom: 1.6rem; }
  .checklist-side { min-height: 300px; }
  .cta-wrapper { padding: 3rem 1.5rem; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; }
  .newsletter-form { flex-direction: column; border-radius: 20px; padding: 10px; gap: 8px; }
  .newsletter-form input { border-bottom: 1px solid rgba(255,255,255,.2); border-radius: 0; padding: 12px 8px; }
  .newsletter-form .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .site-footer { padding-top: 3.5rem; }
}
@media (max-width: 520px) {
  .brand-logo { font-size: 1.05rem; }
  .logo-icon { width: 36px; height: 36px; font-size: .95rem; }
  .hero-badge { font-size: .75rem; padding: 6px 12px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .btn { white-space: nowrap; }
  .topic-body h3 { font-size: 1.12rem; }
  .stats-card { padding: 1.8rem 1rem; }
  .faq-question { font-size: .95rem; padding: 1.1rem 1.2rem; }
  .faq-answer-inner { padding: 0 1.2rem 1.2rem; font-size: .92rem; }
}