/* roulang page: index */
:root{
  --primary:#0f4c75;--primary-dark:#0a3550;--secondary:#f39c12;--accent:#00b8a9;
  --bg-light:#f4f7fb;--bg-white:#ffffff;--bg-dark:#0f172a;
  --text-main:#1e293b;--text-muted:#64748b;--border:#dfe6ee;
  --radius:14px;--radius-sm:8px;
  --shadow:0 4px 24px rgba(15,76,117,.08);--shadow-lg:0 10px 40px rgba(15,76,117,.16);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;color:var(--text-main);background:var(--bg-light);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,select{font-family:inherit;font-size:inherit}
.row{max-width:1200px;margin:0 auto;padding:0 24px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(15,76,117,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:1300px;margin:0 auto;padding:0 24px;height:72px;position:relative;gap:16px}
.brand-logo{font-size:24px;font-weight:800;color:var(--primary);letter-spacing:-1px;flex-shrink:0;display:flex;align-items:center;gap:8px}
.brand-logo i{color:var(--secondary);font-size:20px}
.nav-left{display:flex;align-items:center;gap:6px;flex:1;justify-content:flex-end}
.nav-right{display:flex;align-items:center;gap:6px;flex:1;justify-content:flex-start}
.nav-link{padding:8px 18px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text-main);transition:var(--transition)}
.nav-link:hover{background:rgba(15,76,117,.08);color:var(--primary)}
.nav-link.active{background:var(--primary);color:#fff}
.btn{padding:10px 28px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 4px 16px rgba(15,76,117,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(15,76,117,.35)}
.btn-secondary{background:var(--secondary);color:#fff;box-shadow:0 4px 16px rgba(243,156,18,.3)}
.btn-secondary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(243,156,18,.4)}
.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:6px 18px;font-size:13px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--primary);cursor:pointer;padding:6px}

/* Hero */
.hero{position:relative;background:linear-gradient(rgba(15,76,117,.85),rgba(10,53,92,.9)),url('/assets/images/backpic/back-1.png') center/cover;color:#fff;padding:100px 0 90px;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);padding:8px 20px;border-radius:999px;font-size:14px;margin-bottom:24px;backdrop-filter:blur(4px)}
.hero h1{font-size:48px;font-weight:900;line-height:1.25;letter-spacing:-2px;margin-bottom:18px}
.hero h1 span{color:var(--secondary)}
.hero p{font-size:17px;max-width:640px;margin:0 auto 34px;color:rgba(255,255,255,.88)}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:64px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat strong{font-size:36px;font-weight:900;color:var(--secondary);display:block}
.hero-stat span{font-size:14px;color:rgba(255,255,255,.75)}

/* Section common */
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head .tag{display:inline-block;background:rgba(15,76,117,.08);color:var(--primary);padding:6px 20px;border-radius:999px;font-size:13px;font-weight:600;margin-bottom:14px}
.section-head h2{font-size:34px;font-weight:800;letter-spacing:-1px;margin-bottom:12px;color:var(--text-main)}
.section-head p{color:var(--text-muted);font-size:16px;max-width:560px;margin:0 auto;line-height:1.7}

/* Feature cards */
.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.info-card{background:#fff;border-radius:var(--radius);padding:30px 24px;text-align:center;box-shadow:var(--shadow);transition:var(--transition);border:1px solid rgba(0,0,0,.03)}
.info-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(15,76,117,.1)}
.info-card .icon{width:64px;height:64px;margin:0 auto 18px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:18px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:26px;box-shadow:0 8px 20px rgba(15,76,117,.2)}
.info-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.info-card p{font-size:14px;color:var(--text-muted);line-height:1.65}

/* Category cards */
.cat-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.cat-card{background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);border:1px solid rgba(0,0,0,.04)}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.cat-card .cat-cover{position:relative;height:220px;overflow:hidden}
.cat-card .cat-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.cat-card:hover .cat-cover img{transform:scale(1.05)}
.cat-card .cat-cover .cat-tag{position:absolute;top:16px;left:16px;background:rgba(255,255,255,.95);color:var(--primary);padding:5px 16px;border-radius:999px;font-size:12px;font-weight:700}
.cat-card .cat-body{padding:28px}
.cat-card .cat-body h3{font-size:22px;font-weight:800;margin-bottom:10px}
.cat-card .cat-body p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:18px}
.cat-card .cat-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-muted)}
.cat-card .cat-meta .fa-solid{color:var(--secondary)}

/* Content list */
.list-panel{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.list-item{display:flex;align-items:center;gap:18px;padding:22px 28px;border-bottom:1px solid var(--border);transition:var(--transition)}
.list-item:last-child{border-bottom:none}
.list-item:hover{background:rgba(15,76,117,.03);padding-left:34px}
.list-item .date{flex-shrink:0;width:78px;text-align:center;background:var(--bg-light);border-radius:10px;padding:8px 6px}
.list-item .date strong{display:block;font-size:20px;color:var(--primary);font-weight:800}
.list-item .date span{font-size:12px;color:var(--text-muted)}
.list-item .info{flex:1}
.list-item .info h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px;color:var(--text-main)}
.list-item .info h3 a:hover{color:var(--primary)}
.list-item .info p{font-size:14px;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-item .list-tag{flex-shrink:0;background:rgba(0,184,169,.1);color:var(--accent);padding:4px 14px;border-radius:999px;font-size:12px;font-weight:600}

/* Process */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:step}
.process-item{position:relative;background:#fff;border-radius:var(--radius);padding:30px 24px;text-align:center;box-shadow:var(--shadow);border:1px solid rgba(0,0,0,.04)}
.process-item::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:34px;height:34px;background:var(--secondary);color:#fff;border-radius:50%;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 4px 12px rgba(243,156,18,.35)}
.process-item h3{font-size:17px;font-weight:700;margin-bottom:8px;margin-top:8px}
.process-item p{font-size:13px;color:var(--text-muted)}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;box-shadow:var(--shadow);margin-bottom:16px;overflow:hidden;border:1px solid rgba(0,0,0,.04)}
.faq-item details summary{padding:22px 28px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;font-size:16px;color:var(--text-main)}
.faq-item details summary::-webkit-details-marker{display:none}
.faq-item details summary i{transition:transform .3s;color:var(--primary)}
.faq-item details[open] summary i{transform:rotate(180deg)}
.faq-item details p{padding:0 28px 22px;color:var(--text-muted);font-size:15px;line-height:1.75}

/* CTA */
.cta-section{background:linear-gradient(135deg,var(--primary),var(--primary-dark)),url('/assets/images/backpic/back-3.png') center/cover;color:#fff;padding:80px 0;text-align:center;position:relative}
.cta-section h2{font-size:36px;font-weight:800;margin-bottom:16px;letter-spacing:-1px}
.cta-section p{font-size:16px;margin-bottom:30px;color:rgba(255,255,255,.85)}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Footer */
.site-footer{background:var(--bg-dark);color:#8fa3bd;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-grid h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-grid a{display:block;padding:5px 0;transition:var(--transition)}
.footer-grid a:hover{color:var(--secondary);padding-left:6px}
.footer-grid p{line-height:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:#64748b}

/* Sections alternates */
.section.bg-white{background:#fff}

/* Responsive */
@media(max-width:1024px){
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:38px}
}
@media(max-width:768px){
  .header-inner{height:64px;padding:0 16px}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:block}
  .mobile-menu{position:fixed;top:64px;left:0;right:0;background:#fff;box-shadow:var(--shadow-lg);padding:16px 24px;display:none;z-index:99}
  .mobile-menu.open{display:block}
  .mobile-menu a{display:block;padding:12px 16px;border-radius:10px;font-size:16px;margin-bottom:4px}
  .mobile-menu a:hover,.mobile-menu a.active{background:rgba(15,76,117,.06);color:var(--primary)}
  .hero{padding:70px 0 60px}
  .hero h1{font-size:30px}
  .hero p{font-size:15px}
  .cat-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section{padding:56px 0}
  .section-head h2{font-size:27px}
  .list-item{flex-direction:column;align-items:flex-start;gap:10px;padding:18px 20px}
  .list-item .date{width:auto;display:inline-flex;gap:6px;align-items:center}
  .list-item .date strong,.list-item .date span{display:inline}
  .list-item .list-tag{position:absolute;top:20px;right:20px}
  .list-item{position:relative}
}
@media(max-width:520px){
  .info-grid,.process-grid{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .hero-stat strong{font-size:26px}
  .hero-actions .btn{width:100%;justify-content:center}
  .cta-actions .btn{width:100%;justify-content:center}
  .faq-item details summary{font-size:15px;padding:16px 20px}
  .faq-item details p{padding:0 20px 18px}
}

/* roulang page: article */
:root {
  --primary: #1a54a6;
  --primary-dark: #123d7a;
  --primary-light: #e8f0fe;
  --accent: #ff7a1a;
  --accent-light: #fff3e8;
  --bg: #f6f8fb;
  --bg-white: #ffffff;
  --text: #1c2536;
  --text-muted: #637083;
  --border: #e5eaf0;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.14);
  --transition: all 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}
.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  gap: 16px;
}
.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-right {
  justify-content: flex-end;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
}
.nav-link i {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}
.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-link:hover i {
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
}
.nav-link.active i {
  color: #fff;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 4px;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(26, 84, 166, 0.3);
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(120deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 10px;
}
.menu-toggle:hover {
  background: var(--primary-light);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 12px 20px 20px;
  background: #fff;
  border-top: 1px solid var(--border);
}
.mobile-menu.open {
  display: flex;
}
.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 8px;
  border-bottom: 1px solid var(--border);
  font-size: 16px;
  color: var(--text);
}
.mobile-nav-link i {
  color: var(--primary);
  width: 20px;
  text-align: center;
}
.mobile-nav-link:hover {
  color: var(--primary);
}
.page-banner {
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  padding: 100px 0 90px;
  position: relative;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8, 18, 34, 0.92), rgba(18, 48, 88, 0.76));
}
.page-banner-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}
.banner-cate {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.page-banner h1 {
  color: #fff;
  font-size: 38px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}
.banner-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}
.banner-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.banner-meta i {
  color: rgba(255, 255, 255, 0.6);
}
.breadcrumb-wrap {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.breadcrumb {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}
.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb li + li::before {
  content: '/';
  color: #c0c9d4;
}
.breadcrumb a {
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-section {
  padding: 50px 0;
}
.article-layout {
  align-items: flex-start;
}
.article-main {
  margin-bottom: 30px;
}
.article-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.article-hero-img {
  position: relative;
  height: 320px;
  overflow: hidden;
  background: var(--primary-light);
}
.article-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.article-body {
  padding: 40px 44px;
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #2a3447;
  word-break: break-word;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 28px 0 14px;
  line-height: 1.5;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin: 20px 0 10px;
}
.article-content p {
  margin-bottom: 18px;
}
.article-content strong {
  font-weight: 700;
  color: var(--text);
}
.article-content em {
  font-style: italic;
}
.article-content ul,
.article-content ol {
  margin: 0 0 20px 22px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover {
  color: var(--primary-dark);
}
.article-content img {
  border-radius: var(--radius);
  margin: 18px 0;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 22px 0;
  color: #3a4a63;
  font-style: italic;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 15px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content table th {
  background: var(--primary-light);
  font-weight: 600;
  color: var(--text);
}
.article-content table tr:nth-child(even) {
  background: #fafbfc;
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 30px 0;
}
.not-found {
  text-align: center;
  padding: 60px 30px;
}
.not-found-icon {
  font-size: 52px;
  color: var(--border);
  margin-bottom: 20px;
}
.not-found h2 {
  font-size: 28px;
  color: var(--text);
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-muted);
  margin-bottom: 28px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 6px 20px rgba(26, 84, 166, 0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(26, 84, 166, 0.35);
  transform: translateY(-2px);
}
.article-sidebar {
  position: sticky;
  top: 90px;
}
.side-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  margin-bottom: 24px;
}
.side-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary-light);
  margin-bottom: 18px;
}
.side-card-head i {
  color: var(--primary);
  font-size: 17px;
}
.side-info-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.side-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
}
.side-info-item:last-child {
  border-bottom: none;
}
.side-info-item span {
  color: var(--text-muted);
}
.side-info-item strong {
  color: var(--text);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.side-nav-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.side-nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.side-nav-item:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  transform: translateX(3px);
}
.side-nav-item > i {
  font-size: 22px;
  color: var(--primary);
  width: 36px;
  height: 36px;
  background: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}
.side-nav-item span {
  display: flex;
  flex-direction: column;
}
.side-nav-item strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.side-nav-item em {
  font-style: normal;
  font-size: 13px;
  color: var(--text-muted);
}
.side-post-list {
  display: flex;
  flex-direction: column;
}
.side-post-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.side-post-item:last-child {
  border-bottom: none;
}
.side-post-item:hover {
  padding-left: 6px;
}
.side-post-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 8px;
}
.side-post-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.side-post-text strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.side-post-text em {
  font-style: normal;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg);
  padding: 2px 10px;
  border-radius: 999px;
  align-self: flex-start;
}
.side-empty {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  padding: 20px 0;
}
.related-section {
  padding: 50px 0 30px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  position: relative;
  padding-left: 16px;
}
.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 4px;
}
.section-head a {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.section-head a:hover {
  color: var(--primary-dark);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.related-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.related-body .tag {
  align-self: flex-start;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
}
.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}
.related-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}
.faq-section {
  padding: 50px 0;
}
.faq-head {
  text-align: center;
  margin-bottom: 40px;
}
.faq-head h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.faq-head p {
  color: var(--text-muted);
  font-size: 16px;
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.faq-question {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.faq-question i {
  color: var(--primary);
  margin-top: 3px;
}
.faq-answer {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  padding-left: 26px;
}
.cta-section {
  padding: 40px 0 60px;
}
.cta-inner {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 20px;
  padding: 46px 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  position: relative;
  overflow: hidden;
}
.cta-inner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}
.cta-inner::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 30%;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}
.cta-text {
  color: #fff;
  position: relative;
  z-index: 2;
}
.cta-text h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}
.cta-text p {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 0;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  box-shadow: 0 6px 20px rgba(255, 122, 26, 0.35);
  transition: var(--transition);
  position: relative;
  z-index: 2;
}
.cta-btn:hover {
  background: #e86a08;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 122, 26, 0.45);
}
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 50px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
}
.footer-grid h4 {
  color: #fff;
  font-size: 17px !important;
  margin-bottom: 16px !important;
  font-weight: 600 !important;
}
.footer-grid p {
  font-size: 14px;
  line-height: 1.7;
  color: #94a3b8;
  margin-bottom: 0;
}
.footer-grid a {
  display: block;
  color: #94a3b8;
  font-size: 14px;
  padding: 7px 0;
  transition: var(--transition);
}
.footer-grid a:hover {
  color: var(--accent);
  padding-left: 5px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
  color: #64748b;
}
@media (max-width: 1024px) {
  .page-banner {
    padding: 80px 0 70px;
  }
  .page-banner h1 {
    font-size: 32px;
  }
  .article-body {
    padding: 32px 30px;
  }
  .related-grid {
    gap: 18px;
  }
  .footer-grid {
    gap: 30px;
  }
}
@media (max-width: 768px) {
  .header-inner {
    grid-template-columns: 1fr auto 1fr;
    min-height: 64px;
  }
  .nav-left,
  .nav-right {
    display: none;
  }
  .menu-toggle {
    display: block;
    justify-self: end;
  }
  .logo-text {
    font-size: 18px;
  }
  .page-banner {
    padding: 60px 0 50px;
  }
  .page-banner h1 {
    font-size: 26px;
  }
  .banner-meta {
    gap: 14px;
  }
  .article-body {
    padding: 24px 20px;
  }
  .article-hero-img {
    height: 220px;
  }
  .article-content {
    font-size: 15px;
    line-height: 1.85;
  }
  .article-content h2 {
    font-size: 21px;
  }
  .article-content h3 {
    font-size: 18px;
  }
  .article-sidebar {
    position: static;
    margin-top: 30px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .cta-inner {
    flex-direction: column;
    text-align: center;
    padding: 40px 24px;
  }
  .cta-btn {
    margin-top: 6px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .breadcrumb .current {
    max-width: 150px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }
  .logo-text {
    font-size: 17px;
  }
  .page-banner {
    padding: 50px 0 42px;
  }
  .page-banner h1 {
    font-size: 22px;
  }
  .banner-cate {
    font-size: 13px;
    padding: 5px 14px;
  }
  .banner-meta {
    font-size: 13px;
    gap: 10px;
  }
  .article-body {
    padding: 20px 16px;
  }
  .article-content h2 {
    font-size: 19px;
    padding-left: 10px;
  }
  .article-content h3 {
    font-size: 17px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .side-card {
    padding: 18px;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .cta-text h2 {
    font-size: 20px;
  }
  .footer-bottom {
    font-size: 13px;
  }
}

/* roulang page: category1 */
:root {
      --primary: #0d47a1;
      --primary-light: #1565c0;
      --primary-dark: #0a3556;
      --accent: #f5a623;
      --accent-dark: #d18f16;
      --bg: #f6f8fc;
      --bg-soft: #f0f5ff;
      --white: #ffffff;
      --text: #1c2b3a;
      --text-muted: #64748b;
      --border: #e2e8f0;
      --radius: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(13, 71, 161, .06);
      --shadow-md: 0 8px 24px rgba(13, 71, 161, .10);
      --shadow-lg: 0 16px 40px rgba(13, 71, 161, .14);
      --transition: .25s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

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

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

    a:hover {
      color: var(--primary-light);
    }

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

    ul,
    ol {
      list-style: none;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      margin: 0;
      font-family: inherit;
      line-height: 1.35;
      color: inherit;
    }

    a:focus-visible,
    button:focus-visible {
      outline: 3px solid rgba(245, 166, 35, .6);
      outline-offset: 2px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 600;
      border: 1px solid transparent;
      transition: all .25s ease;
      cursor: pointer;
      text-align: center;
    }

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

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

    .btn-accent {
      background: linear-gradient(135deg, var(--accent), #f6b83e);
      color: #0b2540;
    }

    .btn-accent:hover {
      color: #0b2540;
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(245, 166, 35, .3);
    }

    .btn-outline {
      border: 1px solid rgba(255, 255, 255, .7);
      color: #fff;
      background: rgba(255, 255, 255, .10);
      backdrop-filter: blur(4px);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, .22);
      color: #fff;
    }

    .btn-ghost {
      border: 1px solid rgba(255, 255, 255, .4);
      color: #fff;
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, .12);
      color: #fff;
    }

    .btn:active {
      transform: scale(.97) !important;
    }

    .site-header {
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      position: sticky;
      top: 0;
      z-index: 100;
      padding: 14px 0;
    }

    .header-inner {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 20px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: .5px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      white-space: nowrap;
    }

    .brand-logo i {
      -webkit-text-fill-color: var(--primary);
    }

    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-left {
      justify-content: flex-start;
    }

    .nav-right {
      justify-content: flex-end;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 10px 18px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      transition: all .25s ease;
      white-space: nowrap;
    }

    .nav-link:hover {
      background: var(--bg-soft);
      color: var(--primary);
    }

    .nav-link.active {
      background: var(--primary);
      color: #fff;
      box-shadow: var(--shadow-sm);
    }

    .page-hero {
      background: linear-gradient(135deg, rgba(10, 48, 86, .95), rgba(13, 71, 161, .85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      padding: 78px 0 62px;
      color: #fff;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .25);
      color: #fff;
      font-size: 13px;
      font-weight: 600;
      padding: 7px 16px;
      border-radius: 999px;
      margin-bottom: 22px;
      backdrop-filter: blur(4px);
    }

    .page-hero h1 {
      font-size: 42px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .hero-subtitle {
      max-width: 680px;
      margin: 0 auto 30px;
      font-size: 17px;
      color: rgba(255, 255, 255, .85);
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 14px;
      flex-wrap: wrap;
    }

    .hero-stats {
      margin-top: 42px;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, .16);
    }

    .hero-stats .cell {
      text-align: center;
    }

    .hero-stats strong {
      display: block;
      font-size: 30px;
      font-weight: 800;
      color: #fff;
    }

    .hero-stats span {
      color: rgba(255, 255, 255, .72);
      font-size: 14px;
      display: block;
      margin-top: 2px;
    }

    .section {
      padding: 72px 0;
    }

    .section-alt {
      background: var(--bg-soft);
    }

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px;
    }

    .eyebrow {
      display: inline-block;
      background: rgba(21, 101, 192, .10);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1px;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 14px;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .section-head p {
      font-size: 16px;
      color: var(--text-muted);
    }

    .entry-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
      height: 100%;
      transition: transform .25s ease, box-shadow .25s ease;
      position: relative;
      overflow: hidden;
    }

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

    .entry-card::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: opacity .3s ease;
    }

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

    .entry-icon {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(13, 71, 161, .12), rgba(245, 166, 35, .14));
      color: var(--primary);
      font-size: 24px;
      margin-bottom: 20px;
    }

    .entry-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .entry-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .badge {
      display: inline-block;
      background: rgba(245, 166, 35, .14);
      color: var(--accent-dark);
      font-size: 12px;
      font-weight: 700;
      padding: 5px 12px;
      border-radius: 999px;
    }

    .steps .step-item {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 36px 28px 30px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
      height: 100%;
      text-align: center;
      transition: transform .25s ease, box-shadow .25s ease;
    }

    .steps .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .step-num {
      width: 58px;
      height: 58px;
      margin: 0 auto 20px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #fff;
      font-size: 20px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 8px 18px rgba(13, 71, 161, .22);
    }

    .step-item h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .step-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .guide-card {
      background: #fff;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: transform .25s ease, box-shadow .25s ease;
    }

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

    .guide-cover {
      position: relative;
      overflow: hidden;
      height: 200px;
    }

    .guide-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }

    .guide-card:hover .guide-cover img {
      transform: scale(1.05);
    }

    .guide-tag {
      position: absolute;
      left: 14px;
      top: 14px;
      background: rgba(13, 71, 161, .9);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 5px 12px;
      border-radius: 999px;
      backdrop-filter: blur(4px);
    }

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

    .guide-body h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.5;
    }

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

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

    .guide-body p {
      font-size: 14px;
      color: var(--text-muted);
      flex: 1;
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .text-link {
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .text-link:hover {
      color: var(--accent-dark);
      gap: 10px;
    }

    .text-link i {
      transition: transform .25s ease;
    }

    .text-link:hover i {
      transform: translateX(3px);
    }

    .tips-image {
      width: 100%;
      height: 380px;
      object-fit: cover;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
    }

    .tips-list {
      margin-top: 24px;
    }

    .tips-list li {
      padding: 14px 18px;
      border-left: 3px solid var(--primary);
      background: #fff;
      border-radius: 0 14px 14px 0;
      margin-bottom: 12px;
      font-size: 15px;
      box-shadow: var(--shadow-sm);
      line-height: 1.6;
    }

    .tips-list i {
      color: var(--accent);
      margin-right: 10px;
    }

    .faq-wrap .accordion-item {
      background: #fff;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      margin-bottom: 14px;
      border: 1px solid var(--border);
    }

    .accordion-title {
      border: none;
      border-radius: 0;
      padding: 18px 46px 18px 20px;
      background: #fff;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      position: relative;
      line-height: 1.5;
    }

    .accordion-title:hover {
      background: var(--bg-soft);
      color: var(--primary);
    }

    .accordion-title::before {
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      content: "\f107";
      position: absolute;
      right: 20px;
      color: var(--primary);
      transition: transform .3s ease;
    }

    .accordion-item.is-active .accordion-title {
      background: var(--primary);
      color: #fff;
    }

    .accordion-item.is-active .accordion-title::before {
      content: "\f106";
      color: #fff;
    }

    .accordion-content {
      border: none;
      border-top: 1px solid var(--border);
      padding: 18px 20px;
      background: #fafcff;
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.8;
    }

    .faq-sidebar {
      background: linear-gradient(135deg, rgba(13, 71, 161, .06), rgba(245, 166, 35, .08));
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 30px 26px;
      text-align: center;
      height: 100%;
    }

    .faq-sidebar i {
      font-size: 42px;
      color: var(--primary);
      margin-bottom: 16px;
      display: block;
    }

    .faq-sidebar h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }

    .faq-sidebar p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }

    .faq-sidebar .btn {
      width: 100%;
    }

    .cta-section {
      background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      padding: 80px 0;
      position: relative;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(10, 30, 58, .55);
    }

    .cta-box {
      position: relative;
      z-index: 1;
      max-width: 860px;
      margin: 0 auto;
      background: rgba(11, 37, 64, .88);
      border: 1px solid rgba(255, 255, 255, .14);
      border-radius: 28px;
      padding: 54px 40px;
      text-align: center;
      color: #fff;
      box-shadow: var(--shadow-lg);
      backdrop-filter: blur(6px);
    }

    .cta-box h2 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .cta-box p {
      font-size: 16px;
      color: rgba(255, 255, 255, .8);
      margin-bottom: 26px;
    }

    .cta-box .hero-actions {
      margin-top: 0;
    }

    .site-footer {
      background: #0b2540;
      color: #c3d0e0;
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 44px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255, 255, 255, .10);
    }

    .footer-grid h4 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-grid p {
      font-size: 14px;
      line-height: 1.85;
      color: #9fb3c8;
    }

    .footer-grid a {
      display: block;
      color: #b8c9da;
      font-size: 14px;
      padding: 7px 0;
      transition: color .2s ease, padding-left .2s ease;
    }

    .footer-grid a:hover {
      color: var(--accent);
      padding-left: 5px;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 26px;
      font-size: 13px;
      color: #7b8fa3;
    }

    @media (max-width: 1024px) {
      .section {
        padding: 58px 0;
      }

      .page-hero h1 {
        font-size: 36px;
      }

      .footer-grid {
        gap: 28px;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
      }

      .brand-logo {
        width: 100%;
        justify-content: center;
        order: -1;
        font-size: 20px;
        margin-bottom: 2px;
      }

      .nav-left,
      .nav-right {
        gap: 4px;
      }

      .nav-link {
        padding: 8px 14px;
        font-size: 14px;
      }

      .page-hero {
        padding: 56px 0 48px;
      }

      .page-hero h1 {
        font-size: 30px;
      }

      .hero-subtitle {
        font-size: 15px;
      }

      .btn {
        padding: 11px 22px;
        font-size: 14px;
      }

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

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

      .tips-image {
        height: 260px;
        margin-bottom: 24px;
      }

      .cta-box {
        padding: 38px 22px;
      }

      .cta-box h2 {
        font-size: 24px;
      }
    }

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

      .nav-link {
        padding: 7px 10px;
        font-size: 13px;
      }

      .nav-link i {
        font-size: 12px;
      }

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

      .hero-actions {
        flex-direction: column;
        align-items: center;
      }

      .hero-actions .btn {
        width: 100%;
        max-width: 260px;
      }

      .entry-card {
        padding: 24px 18px;
      }

      .step-item {
        padding: 26px 18px;
      }

      .cta-box {
        border-radius: 20px;
      }
    }

/* roulang page: category2 */
:root{
  --primary:#1a3a5c;
  --primary-dark:#0f2740;
  --primary-light:#2d5a8e;
  --accent:#e8a33d;
  --accent-dark:#c9862a;
  --accent-light:#f6d9a8;
  --bg:#f5f8fc;
  --white:#ffffff;
  --text:#1e293b;
  --text-light:#64748b;
  --border:#e2e8f0;
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:22px;
  --shadow:0 6px 24px rgba(15,39,64,.08);
  --shadow-lg:0 16px 48px rgba(15,39,64,.14);
  --space-section:90px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--accent-dark)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid-container{padding-right:0;padding-left:0}
.text-center{text-align:center}
.section{padding:var(--space-section) 0}
.section-alt{background:var(--white)}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.section-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--accent-light);
  color:var(--accent-dark);
  font-size:14px;font-weight:600;
  padding:6px 16px;border-radius:30px;
  letter-spacing:.5px;margin-bottom:14px;
}
.section-title{
  font-size:clamp(28px,4vw,38px);
  font-weight:800;
  color:var(--primary-dark);
  line-height:1.3;
  margin-bottom:14px;
}
.section-desc{color:var(--text-light);font-size:17px;line-height:1.8}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 18px rgba(15,39,64,.04);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:74px;gap:16px;position:relative;
}
.brand-logo{
  font-size:22px;font-weight:800;
  color:var(--primary-dark);
  letter-spacing:.5px;
  display:flex;align-items:center;gap:8px;
  white-space:nowrap;
  transition:opacity .2s;
}
.brand-logo i{color:var(--accent);font-size:20px}
.brand-logo:hover{opacity:.85;color:var(--primary-dark)}
.nav-left,.nav-right{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:30px;
  font-size:15px;font-weight:600;color:var(--text);
  transition:all .25s ease;white-space:nowrap;
}
.nav-link i{font-size:14px;color:var(--text-light);transition:color .25s}
.nav-link:hover{background:var(--bg);color:var(--primary)}
.nav-link.active{
  background:var(--primary);color:var(--white);
  box-shadow:0 4px 16px rgba(26,58,92,.28);
}
.nav-link.active i{color:var(--accent-light)}
.mobile-toggle{
  display:none;
  background:none;border:1px solid var(--border);
  width:42px;height:42px;border-radius:10px;
  font-size:19px;color:var(--primary);
  cursor:pointer;align-items:center;justify-content:center;
  transition:all .25s;
}
.mobile-toggle:hover{background:var(--bg);border-color:var(--primary-light)}
.mobile-menu{
  display:none;
  flex-direction:column;
  background:var(--white);
  border-bottom:1px solid var(--border);
  padding:14px 24px 20px;
  gap:6px;
}
.mobile-menu.open{display:flex}
.mobile-nav-link{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:10px;
  font-size:16px;font-weight:600;color:var(--text);
  transition:all .2s;
}
.mobile-nav-link i{width:20px;color:var(--text-light)}
.mobile-nav-link:hover{background:var(--bg);color:var(--primary)}
.mobile-nav-link.active{background:var(--primary);color:var(--white)}
.mobile-nav-link.active i{color:var(--accent-light)}

/* ===== Hero ===== */
.page-hero{
  position:relative;
  padding:100px 0 90px;
  background-size:cover;background-position:center;
  color:var(--white);
  text-align:center;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,39,64,.92) 0%,rgba(26,58,92,.78) 60%,rgba(15,39,64,.85) 100%);
}
.page-hero .container{position:relative;z-index:2}
.hero-breadcrumb{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  padding:6px 18px;border-radius:30px;
  font-size:14px;margin-bottom:22px;
  color:rgba(255,255,255,.92);
}
.hero-breadcrumb a{color:#fff;opacity:.82}
.hero-breadcrumb a:hover{opacity:1;color:var(--accent-light)}
.hero-breadcrumb i{font-size:12px;opacity:.7}
.hero-title{
  font-size:clamp(32px,5.2vw,52px);
  font-weight:800;line-height:1.25;
  letter-spacing:1px;
  margin-bottom:16px;
}
.hero-title span{color:var(--accent)}
.hero-subtitle{
  max-width:700px;margin:0 auto 28px;
  font-size:18px;line-height:1.8;
  color:rgba(255,255,255,.88);
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:26px}
.hero-badge{
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.25);
  padding:6px 16px;border-radius:30px;
  font-size:14px;font-weight:500;
  display:inline-flex;align-items:center;gap:6px;
}
.hero-badge i{color:var(--accent)}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:30px;
  font-size:16px;font-weight:600;
  border:2px solid transparent;
  cursor:pointer;
  transition:all .28s ease;
  line-height:1.4;
}
.btn-primary{background:var(--accent);color:var(--primary-dark);box-shadow:0 4px 18px rgba(232,163,61,.35)}
.btn-primary:hover{background:var(--accent-dark);color:var(--white);transform:translateY(-2px);box-shadow:0 8px 28px rgba(232,163,61,.4)}
.btn-outline{border-color:rgba(255,255,255,.7);color:var(--white);background:transparent}
.btn-outline:hover{background:var(--white);color:var(--primary);transform:translateY(-2px)}
.btn-ghost{border-color:var(--primary-light);color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:var(--white);transform:translateY(-2px)}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:12px}

/* ===== Cards ===== */
.card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:30px;
  transition:all .3s ease;
  height:100%;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:transparent}
.card-icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:24px;margin-bottom:18px;
}
.card-title{font-size:19px;font-weight:700;color:var(--primary-dark);margin-bottom:10px}
.card-text{color:var(--text-light);font-size:15px;line-height:1.75;margin-bottom:16px}
.card-link{font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.card-link i{transition:transform .25s}
.card-link:hover i{transform:translateX(4px)}

/* 分类卡片 */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{text-align:left;position:relative;overflow:hidden}
.cat-card::after{
  content:'';position:absolute;right:-20px;bottom:-20px;width:90px;height:90px;
  background:var(--accent-light);opacity:.3;border-radius:50%;
  transition:transform .4s;
}
.cat-card:hover::after{transform:scale(1.6)}
.cat-card .card-icon{background:var(--bg)}
.cat-card:nth-child(2) .card-icon{background:#eef4ff}
.cat-card:nth-child(3) .card-icon{background:#fff7ed}
.cat-card:nth-child(4) .card-icon{background:#f0fdf4}
.cat-card .badge{
  position:absolute;top:20px;right:20px;
  background:var(--bg);color:var(--text-light);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;
  letter-spacing:.5px;
}

/* 教程文章卡片 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:var(--white);
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border);
  transition:all .3s ease;
  display:flex;flex-direction:column;
  height:100%;
}
.post-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px);border-color:transparent}
.post-thumb{height:220px;overflow:hidden;position:relative}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.post-card:hover .post-thumb img{transform:scale(1.06)}
.post-thumb::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(15,39,64,.25));
}
.post-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-light);margin-bottom:12px}
.post-meta .dot{width:4px;height:4px;background:var(--accent);border-radius:50%}
.post-meta i{margin-right:3px}
.post-title{font-size:18px;font-weight:700;color:var(--primary-dark);line-height:1.5;margin-bottom:10px;transition:color .2s}
.post-card:hover .post-title{color:var(--accent-dark)}
.post-excerpt{color:var(--text-light);font-size:15px;line-height:1.7;margin-bottom:16px;flex:1}
.post-footer{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;border-top:1px solid var(--border);
  font-size:14px;
}
.post-footer .read-time{color:var(--text-light);display:flex;align-items:center;gap:5px}
.post-footer .read-time i{color:var(--accent)}

/* ===== 流程 ===== */
.process-section{background:var(--primary-dark);color:var(--white);position:relative;overflow:hidden}
.process-section::before{
  content:'';position:absolute;top:-80px;right:-80px;width:300px;height:300px;
  background:radial-gradient(circle,rgba(232,163,61,.25),transparent 65%);
}
.process-section .section-title{color:var(--white)}
.process-section .section-desc{color:rgba(255,255,255,.75)}
.process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;position:relative;z-index:2}
.process-step{
  text-align:center;padding:30px 18px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-lg);
  transition:all .3s;
  position:relative;
}
.process-step:hover{background:rgba(255,255,255,.14);transform:translateY(-5px)}
.step-num{
  width:46px;height:46px;margin:0 auto 16px;
  background:var(--accent);color:var(--primary-dark);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:19px;
  box-shadow:0 4px 18px rgba(232,163,61,.4);
}
.step-name{font-size:16px;font-weight:700;margin-bottom:8px}
.step-desc{font-size:14px;color:rgba(255,255,255,.7);line-height:1.6}

/* ===== 双栏 ===== */
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:stretch}
.feature-box{
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:38px;
  box-shadow:var(--shadow);
}
.feature-box h3{font-size:22px;font-weight:800;color:var(--primary-dark);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.feature-box h3 i{color:var(--accent)}
.feature-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px solid var(--border);
  font-size:15px;color:var(--text);line-height:1.7;
}
.feature-list li:last-child{border-bottom:none}
.feature-list i{color:var(--accent);margin-top:3px;font-size:16px;flex-shrink:0}
.feature-list strong{color:var(--primary-dark);font-weight:700}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:16px;
  overflow:hidden;
  transition:border-color .3s,box-shadow .3s;
}
.faq-item:hover{border-color:var(--primary-light);box-shadow:var(--shadow)}
.faq-item summary{
  padding:22px 26px;
  font-size:17px;font-weight:600;
  color:var(--primary-dark);
  cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;
  list-style:none;
  transition:background .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'\f107';
  font-family:'Font Awesome 6 Free';font-weight:900;
  color:var(--accent);font-size:18px;
  transition:transform .3s;
  flex-shrink:0;margin-left:14px;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item[open] summary{background:var(--bg)}
.faq-answer{padding:0 26px 22px;color:var(--text-light);font-size:15px;line-height:1.85}
.faq-answer a{font-weight:600}
.faq-answer a:hover{color:var(--accent-dark)}

/* ===== CTA ===== */
.cta-section{
  background:var(--primary);
  border-radius:var(--radius-lg);
  padding:60px 48px;
  color:var(--white);
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;top:-40px;left:-40px;
  width:180px;height:180px;border-radius:50%;
  background:rgba(232,163,61,.3);
}
.cta-section::after{
  content:'';position:absolute;bottom:-60px;right:-30px;
  width:220px;height:220px;border-radius:50%;
  background:rgba(232,163,61,.18);
}
.cta-section .container{position:relative;z-index:2}
.cta-title{font-size:clamp(24px,3.4vw,34px);font-weight:800;margin-bottom:14px}
.cta-text{max-width:640px;margin:0 auto 28px;color:rgba(255,255,255,.85);font-size:16px;line-height:1.8}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{
  background:var(--primary-dark);
  color:rgba(255,255,255,.8);
  padding:70px 0 36px;
  margin-top:var(--space-section);
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr;
  gap:50px;
  margin-bottom:44px;
}
.footer-grid h4{
  color:var(--white);font-size:18px;font-weight:700;
  margin-bottom:18px;position:relative;padding-bottom:10px;
}
.footer-grid h4::after{
  content:'';position:absolute;left:0;bottom:0;
  width:32px;height:3px;background:var(--accent);
  border-radius:2px;
}
.footer-grid p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.7)}
.footer-grid a{
  display:block;color:rgba(255,255,255,.72);
  padding:7px 0;font-size:15px;
  transition:all .2s;
}
.footer-grid a i{width:20px;color:var(--accent)}
.footer-grid a:hover{color:var(--white);transform:translateX(4px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:26px;
  text-align:center;
  font-size:14px;
  color:rgba(255,255,255,.55);
  letter-spacing:.3px;
}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  :root{--space-section:64px}
  .header-inner{height:64px}
  .nav-left,.nav-right{display:none}
  .mobile-toggle{display:flex}
  .mobile-menu{display:none}
  .page-hero{padding:72px 0 64px}
  .hero-title{font-size:32px}
  .hero-subtitle{font-size:16px}
  .feature-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid>div:first-child p{max-width:420px}
  .cta-section{padding:44px 24px}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .post-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;width:100%;max-width:280px;margin-left:auto;margin-right:auto}
  .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
}