/* roulang page: index */
:root{
  --primary:#0d1f3c;
  --primary-light:#16345c;
  --accent:#c9a05a;
  --accent-dark:#a9843e;
  --accent-light:#f5e9d4;
  --bg:#f4f6f9;
  --bg-white:#ffffff;
  --bg-dark:#0a1526;
  --text:#132238;
  --text-light:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:8px;
  --shadow:0 4px 20px rgba(13,31,60,.06);
  --shadow-lg:0 16px 48px rgba(13,31,60,.12);
  --transition:all .3s ease;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section-pad{padding:80px 0}
.text-center{text-align:center}
/* 导航 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);box-shadow:0 2px 12px rgba(13,31,60,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0}
.logo{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:-.5px;line-height:1.2;display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo i{color:var(--accent);font-size:22px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{padding:8px 14px;border-radius:40px;font-size:14px;font-weight:500;color:var(--text-light);position:relative}
.main-nav a:hover{color:var(--primary);background:var(--bg)}
.main-nav a.active{color:var(--primary);background:var(--accent-light);font-weight:600}
.header-cta{margin-left:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 22px;border-radius:40px;font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:var(--transition)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:0 8px 24px rgba(13,31,60,.25)}
.btn-accent{background:var(--accent);color:var(--primary)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,160,90,.4)}
.btn-outline{border-color:rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.08)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.15)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:var(--accent-light);transform:translateY(-2px)}
.nav-toggle{display:none;background:none;border:none;font-size:22px;color:var(--primary);cursor:pointer;padding:6px}
/* Hero */
.hero{position:relative;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;padding:110px 0;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,21,38,.88) 30%,rgba(13,31,60,.55) 65%,rgba(13,31,60,.25))}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(201,160,90,.2);border:1px solid rgba(201,160,90,.4);color:#e8c47e;padding:6px 14px;border-radius:40px;font-size:13px;font-weight:500;margin-bottom:20px}
.hero-badge i{font-size:14px}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:-1px;margin-bottom:16px}
.hero h1 span{color:var(--accent)}
.hero p.lead{font-size:17px;line-height:1.8;color:rgba(255,255,255,.85);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(20px);border-radius:20px;padding:28px}
.hero-card h4{font-size:17px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.hero-card h4 i{color:var(--accent)}
.hero-steps{list-style:none;margin:0 0 18px}
.hero-steps li{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.hero-steps li:last-child{border-bottom:none}
.step-num{width:28px;height:28px;flex-shrink:0;background:var(--accent);color:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.hero-steps p{font-size:14px;line-height:1.5;color:rgba(255,255,255,.9)}
.hero-status{display:flex;align-items:center;gap:10px;background:rgba(46,204,113,.15);border:1px solid rgba(46,204,113,.3);padding:12px 16px;border-radius:12px;font-size:14px;color:#a7e8c3}
.hero-status i{color:#2ecc71}
/* 通用板块标题 */
.section-head{text-align:center;max-width:640px;margin:0 auto 50px}
.section-head .eyebrow{display:inline-block;background:var(--accent-light);color:var(--accent-dark);font-size:13px;font-weight:600;padding:6px 14px;border-radius:40px;margin-bottom:14px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:800;color:var(--primary);letter-spacing:-.5px;margin-bottom:12px}
.section-head p{color:var(--text-light);font-size:15px}
/* 平台亮点 */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-icon{width:56px;height:56px;border-radius:14px;background:var(--accent-light);color:var(--accent-dark);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:20px}
.feature-card h3{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--primary)}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.6}
/* 分类入口 */
.category-section{background:var(--bg-white)}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.category-card{border-radius:20px;overflow:hidden;border:1px solid var(--border);transition:var(--transition);background:var(--bg-white)}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.category-card img{width:100%;height:200px;object-fit:cover}
.category-body{padding:24px}
.category-tag{display:inline-block;background:var(--primary);color:#fff;font-size:12px;padding:4px 12px;border-radius:40px;margin-bottom:12px;font-weight:500}
.category-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--primary)}
.category-card p{font-size:14px;color:var(--text-light);line-height:1.6;margin-bottom:16px}
.category-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-dark)}
.category-more i{transition:transform .3s}
.category-card:hover .category-more i{transform:translateX(4px)}
/* 最新信息 */
.latest-section{background:var(--bg)}
.latest-grid{display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:start}
.latest-list{background:var(--bg-white);border-radius:20px;padding:8px 0;box-shadow:var(--shadow)}
.latest-item{display:flex;align-items:center;gap:16px;padding:18px 24px;border-bottom:1px solid var(--border);transition:var(--transition)}
.latest-item:last-child{border-bottom:none}
.latest-item:hover{background:var(--bg);padding-left:30px}
.latest-item .cat-tag{background:var(--accent-light);color:var(--accent-dark);font-size:12px;padding:3px 10px;border-radius:40px;white-space:nowrap;font-weight:500}
.latest-item .item-content{flex:1;min-width:0}
.latest-item h3{font-size:15px;font-weight:600;margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.latest-item p{font-size:13px;color:var(--text-light);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.latest-item time{font-size:12px;color:var(--text-light);white-space:nowrap}
.latest-side{display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--bg-white);border-radius:20px;padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.side-card h4{font-size:16px;font-weight:700;color:var(--primary);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h4 i{color:var(--accent)}
.side-card p{font-size:14px;color:var(--text-light);line-height:1.6}
.side-card ul{list-style:none;margin-top:10px}
.side-card ul li{padding:8px 0;font-size:14px;color:var(--text);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}
.side-card ul li:last-child{border-bottom:none}
.side-card ul li i{color:var(--accent);font-size:12px}
.empty-list{padding:40px;text-align:center;color:var(--text-light)}
/* 流程步骤 */
.steps-section{background:var(--bg-dark);color:#fff;position:relative;overflow:hidden}
.steps-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.12}
.steps-section .container{position:relative;z-index:2}
.steps-section .section-head h2{color:#fff}
.steps-section .section-head p{color:rgba(255,255,255,.7)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:30px 24px;text-align:center;transition:var(--transition)}
.step-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.1)}
.step-icon{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;background:rgba(201,160,90,.2);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--accent);border:1px solid rgba(201,160,90,.3)}
.step-card h3{font-size:16px;font-weight:700;margin-bottom:10px}
.step-card p{font-size:13px;color:rgba(255,255,255,.7);line-height:1.6}
.step-num-label{font-size:12px;color:var(--accent);margin-bottom:6px;font-weight:600;letter-spacing:1px}
/* 体验数据 */
.stats-section{background:var(--bg-white)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:40px}
.stat-item{text-align:center;padding:24px}
.stat-num{font-size:36px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-label{font-size:14px;color:var(--text-light);margin-top:6px}
.rating-card{max-width:720px;margin:0 auto;background:var(--bg);border-radius:20px;padding:32px;border:1px solid var(--border)}
.rating-row{display:flex;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid var(--border)}
.rating-row:last-child{border-bottom:none}
.rating-label{width:110px;font-size:14px;color:var(--text);font-weight:500;flex-shrink:0}
.rating-bar{flex:1;height:8px;background:#e5e9ef;border-radius:40px;overflow:hidden}
.rating-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-dark));border-radius:40px}
.rating-score{font-size:14px;font-weight:700;color:var(--primary);width:40px;text-align:right}
/* 内容资讯 */
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.content-card{background:var(--bg-white);border-radius:20px;overflow:hidden;border:1px solid var(--border);transition:var(--transition)}
.content-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.content-card img{width:100%;height:180px;object-fit:cover}
.content-body{padding:24px}
.content-body .cat-tag{background:var(--accent-light);color:var(--accent-dark);font-size:12px;padding:3px 10px;border-radius:40px;font-weight:500;display:inline-block;margin-bottom:10px}
.content-body h3{font-size:16px;font-weight:700;margin-bottom:8px;line-height:1.4;color:var(--primary)}
.content-body p{font-size:13px;color:var(--text-light);line-height:1.6;margin-bottom:14px}
.content-body .read-more{font-size:13px;font-weight:600;color:var(--accent-dark);display:inline-flex;align-items:center;gap:6px}
/* FAQ */
.faq-section{background:var(--bg)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-white);border:1px solid var(--border);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:var(--transition)}
.faq-item summary{cursor:pointer;padding:20px 24px;font-weight:600;font-size:15px;color:var(--primary);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--accent);font-size:13px;transition:transform .3s;flex-shrink:0}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-item .faq-answer{padding:0 24px 20px;font-size:14px;color:var(--text-light);line-height:1.7}
/* CTA */
.cta-section{background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;position:relative;padding:80px 0;color:#fff}
.cta-section::before{content:'';position:absolute;inset:0;background:rgba(13,31,60,.85)}
.cta-section .container{position:relative;z-index:2;text-align:center}
.cta-section h2{font-size:32px;font-weight:800;margin-bottom:12px}
.cta-section p{font-size:16px;color:rgba(255,255,255,.8);max-width:520px;margin:0 auto 28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* 页脚 */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.7);padding:60px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand h3{color:#fff;font-size:18px;font-weight:700;margin-bottom:12px}
.footer-brand h3 i{color:var(--accent)}
.footer-brand p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.6);max-width:300px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.6);transition:var(--transition)}
.footer-col ul li a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}
/* 响应式 */
@media(max-width:1024px){
.features-grid{grid-template-columns:repeat(2,1fr)}
.category-grid{grid-template-columns:repeat(2,1fr)}
.content-grid{grid-template-columns:repeat(2,1fr)}
.steps-grid{grid-template-columns:repeat(2,1fr)}
.latest-grid{grid-template-columns:1fr}
.hero .container{grid-template-columns:1fr;gap:40px}
.hero{padding:80px 0}
.hero h1{font-size:36px}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.site-header .main-nav{position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;border-bottom:1px solid var(--border);transform:translateY(-120%);opacity:0;pointer-events:none;transition:var(--transition);box-shadow:var(--shadow-lg)}
.site-header.nav-open .main-nav{transform:translateY(0);opacity:1;pointer-events:auto}
.main-nav a{width:100%;text-align:left;padding:12px 16px;border-radius:10px}
.header-cta{display:none}
.nav-toggle{display:block}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.section-pad{padding:60px 0}
.section-head h2{font-size:26px}
}
@media(max-width:520px){
.container{padding:0 16px}
.features-grid,.category-grid,.content-grid,.steps-grid{grid-template-columns:1fr}
.latest-item{flex-direction:column;align-items:flex-start;gap:8px}
.latest-item time{font-size:12px}
.footer-grid{grid-template-columns:1fr}
.hero h1{font-size:28px}
.hero-actions{flex-direction:column;width:100%}
.hero-actions .btn{width:100%}
.cta-actions{flex-direction:column;width:100%}
.cta-actions .btn{width:100%}
.logo{font-size:16px}
}

/* roulang page: category1 */
:root {
  --primary: #12305e;
  --primary-light: #1e4a8c;
  --primary-dark: #0a1f3d;
  --accent: #e9b44c;
  --accent-hover: #d19c33;
  --bg: #f4f7fc;
  --bg-white: #ffffff;
  --bg-light: #eef2f8;
  --text: #1b2430;
  --text-light: #5c6b82;
  --text-muted: #8794a8;
  --border: #e1e7ef;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(10, 30, 60, 0.08);
  --shadow-hover: 0 14px 40px rgba(10, 30, 60, 0.14);
  --spacing: 80px;
  --transition: all 0.3s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
input, select, textarea {
  font-family: inherit;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(10, 30, 60, 0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}
.logo i {
  color: var(--accent);
  font-size: 22px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.main-nav a:hover {
  background: var(--bg-light);
  color: var(--primary);
}
.main-nav a.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}
.header-cta {
  margin-left: auto;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 10px 22px;
  font-size: 15px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 14px rgba(30, 74, 140, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 74, 140, 0.4);
}
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(233, 180, 76, 0.3);
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(233, 180, 76, 0.4);
}
.btn-outline {
  border: 2px solid var(--border);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--primary);
  background: var(--bg-light);
}
.nav-toggle {
  display: none;
  font-size: 22px;
  color: var(--primary);
  padding: 8px 12px;
  border-radius: 8px;
}
.nav-toggle:hover {
  background: var(--bg-light);
}
.page-hero {
  background: linear-gradient(135deg, rgba(10, 31, 61, 0.9), rgba(30, 74, 140, 0.7)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 100px 0 80px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(233, 180, 76, 0.12);
  pointer-events: none;
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.hero-content {
  max-width: 720px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  backdrop-filter: blur(6px);
  margin-bottom: 24px;
}
.hero-badge i {
  color: var(--accent);
}
.page-hero h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.page-hero h1 span {
  color: var(--accent);
}
.page-hero p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-meta {
  display: flex;
  gap: 24px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}
.hero-meta-item i {
  color: var(--accent);
  font-size: 16px;
}
.section {
  padding: var(--spacing) 0;
}
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-header .tag {
  display: inline-block;
  background: rgba(233, 180, 76, 0.15);
  color: var(--accent-hover);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}
.entry-methods-section {
  background: var(--bg-white);
}
.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.entry-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.entry-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  opacity: 0;
  transition: var(--transition);
}
.entry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.entry-card:hover::before {
  opacity: 1;
}
.entry-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(10, 30, 60, 0.2);
}
.entry-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary-dark);
}
.entry-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.75;
}
.entry-card .entry-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.entry-card .entry-link i {
  margin-left: 4px;
  transition: var(--transition);
}
.entry-card .entry-link:hover i {
  transform: translateX(4px);
}
.steps-section {
  background: var(--bg-light);
  position: relative;
}
.steps-wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 960px;
  margin: 0 auto;
}
.step-item {
  flex: 1;
  min-width: 200px;
  text-align: center;
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 20px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 4px 12px rgba(10, 30, 60, 0.25);
}
.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-dark);
}
.step-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}
.notice-section {
  background: var(--bg-white);
}
.notice-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.notice-card {
  display: flex;
  gap: 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}
.notice-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.notice-icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: rgba(233, 180, 76, 0.15);
  color: var(--accent-hover);
}
.notice-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.notice-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}
.articles-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-white) 100%);
}
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.article-cover {
  position: relative;
  overflow: hidden;
  height: 200px;
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.article-card:hover .article-cover img {
  transform: scale(1.05);
}
.article-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 30, 60, 0.3));
}
.article-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(10, 30, 60, 0.8);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  font-weight: 500;
}
.article-body {
  padding: 22px;
}
.article-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--primary-dark);
}
.article-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
}
.article-meta i {
  font-size: 12px;
  margin-right: 4px;
  color: var(--accent-hover);
}
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 70px 0;
  text-align: center;
  color: #fff;
}
.cta-section .section-header h2 {
  color: #fff;
}
.cta-section .section-header p {
  color: rgba(255, 255, 255, 0.8);
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.cta-note {
  margin-top: 20px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.cta-note i {
  color: var(--accent);
}
.faq-section {
  background: var(--bg-white);
}
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(233, 180, 76, 0.4);
}
.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  user-select: none;
}
.faq-question i {
  color: var(--accent-hover);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question i {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer {
  padding: 0 24px 20px;
  max-height: 400px;
}
.faq-answer p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  border-left: 3px solid var(--accent);
  padding-left: 16px;
}
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand h3 {
  font-size: 20px;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand h3 i {
  color: var(--accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 360px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
@media (max-width: 1024px) {
  :root {
    --spacing: 60px;
  }
  .entry-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .article-cover {
    height: 170px;
  }
}
@media (max-width: 768px) {
  :root {
    --spacing: 48px;
  }
  .container {
    padding: 0 20px;
  }
  .header-inner {
    min-height: 64px;
    gap: 12px;
  }
  .logo {
    font-size: 17px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    gap: 6px;
    box-shadow: 0 12px 30px rgba(10, 30, 60, 0.1);
    transform: translateY(-140%);
    transition: transform 0.35s ease;
    z-index: 99;
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav a {
    padding: 14px 16px;
    font-size: 16px;
  }
  .header-cta {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .page-hero {
    padding: 60px 0 50px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .page-hero p {
    font-size: 15px;
  }
  .hero-meta {
    gap: 14px;
    margin-top: 24px;
  }
  .section-header h2 {
    font-size: 26px;
  }
  .entry-grid {
    grid-template-columns: 1fr;
  }
  .steps-wrap {
    flex-direction: column;
  }
  .step-item {
    min-width: 100%;
  }
  .notice-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
}
@media (max-width: 520px) {
  .logo {
    font-size: 15px;
    gap: 6px;
  }
  .logo i {
    font-size: 18px;
  }
  .page-hero h1 {
    font-size: 24px;
  }
  .page-hero p {
    font-size: 14px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .notice-card {
    padding: 20px;
    flex-direction: column;
  }
  .faq-question {
    font-size: 15px;
    padding: 16px 18px;
  }
  .faq-answer {
    padding: 0 18px;
  }
  .faq-item.active .faq-answer {
    padding: 0 18px 16px;
  }
}

/* roulang page: article */
:root {
  --color-primary: #0d1b2a;
  --color-primary-light: #1b2a3a;
  --color-primary-soft: #eef1f5;
  --color-accent: #d9a441;
  --color-accent-hover: #c08f30;
  --color-bg: #f5f7fa;
  --color-card: #ffffff;
  --color-text: #1a2332;
  --color-text-weak: #667085;
  --color-border: #e8ecf1;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(15, 28, 46, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 28, 46, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 28, 46, 0.12);
  --container: 1200px;
  --transition: 0.25s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, select, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  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;
  line-height: 1.4;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: var(--color-accent);
  color: #0d1b2a;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(217, 164, 65, 0.3);
}
.btn-light {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn-light:hover {
  background: var(--color-primary-soft);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  transform: translateY(-2px);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
}
.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin: 12px 0 14px;
  color: var(--color-primary);
}
.section-head p {
  font-size: 16px;
  color: var(--color-text-weak);
  line-height: 1.7;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 42, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  white-space: nowrap;
}
.logo i {
  color: var(--color-accent);
  font-size: 22px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  border-radius: 999px;
  transition: all var(--transition);
}
.main-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
.main-nav a.active {
  color: #0d1b2a;
  background: var(--color-accent);
  font-weight: 600;
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-cta .btn {
  padding: 9px 20px;
  font-size: 14px;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  color: #fff;
  font-size: 19px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  transition: background var(--transition);
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.16); }

/* Page banner */
.page-banner {
  position: relative;
  padding: 72px 0 80px;
  background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.72) 60%, rgba(13, 27, 42, 0.50) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  text-align: center;
}
.banner-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.banner-breadcrumb a { color: rgba(255, 255, 255, 0.75); }
.banner-breadcrumb a:hover { color: var(--color-accent); }
.banner-breadcrumb span { color: rgba(255, 255, 255, 0.45); }
.page-banner h2 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.page-banner .banner-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto;
}

/* Article section */
.article-section {
  padding: 56px 0 70px;
}
.article-wrap {
  max-width: 880px;
  margin: 0 auto;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.article-cover img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}
.article-header {
  padding: 36px 44px 8px;
}
.article-category-tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
}
.article-header h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--color-primary);
  margin-bottom: 14px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--color-text-weak);
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i { color: var(--color-accent); }
.article-content {
  padding: 30px 44px 40px;
}
.article-content p {
  margin-bottom: 22px;
  font-size: 16px;
  line-height: 1.9;
  color: #2b3445;
}
.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--color-primary);
  margin: 30px 0 14px;
  font-weight: 700;
  line-height: 1.4;
}
.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content ul,
.article-content ol {
  padding-left: 22px;
  margin-bottom: 22px;
  color: #2b3445;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; font-size: 16px; line-height: 1.8; }
.article-content img {
  border-radius: var(--radius-md);
  margin: 22px 0;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-primary-soft);
  padding: 16px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 22px;
  color: #425066;
  font-style: italic;
}
.article-content a {
  color: var(--color-accent);
  font-weight: 600;
  border-bottom: 1px solid rgba(217, 164, 65, 0.3);
}
.article-content a:hover { border-bottom-color: var(--color-accent-hover); color: var(--color-accent-hover); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: var(--color-primary-soft);
  font-weight: 600;
  color: var(--color-primary);
}

.article-tags {
  padding: 0 44px 40px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.article-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
}
.article-tag:hover {
  background: var(--color-accent);
  color: #fff;
}
.article-tag i { font-size: 11px; }

.article-empty {
  padding: 90px 44px;
  text-align: center;
}
.article-empty i {
  font-size: 48px;
  color: #d0d8e3;
  margin-bottom: 20px;
}
.article-empty h2 {
  font-size: 26px;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.article-empty p {
  color: var(--color-text-weak);
  margin-bottom: 30px;
}

/* Related section */
.related-section {
  padding: 70px 0;
  background: #fff;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(217, 164, 65, 0.4);
}
.related-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}
.related-body {
  padding: 24px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 4px 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.related-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.45;
}
.related-body p {
  font-size: 14px;
  color: var(--color-text-weak);
  line-height: 1.7;
  margin: 0;
}

/* FAQ */
.faq-section {
  padding: 70px 0;
  background: var(--color-bg);
}
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(217, 164, 65, 0.3);
}
.faq-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.faq-item h3 i {
  color: var(--color-accent);
  font-size: 16px;
  margin-top: 4px;
}
.faq-item p {
  font-size: 14px;
  color: var(--color-text-weak);
  line-height: 1.75;
  margin: 0;
}

/* CTA */
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, #0d1b2a, #16283c), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-blend-mode: multiply;
}
.cta-box {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  color: #fff;
}
.cta-box h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-box p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: #0a1520;
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand h3 i { color: var(--color-accent); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--transition);
}
.footer-col ul a:hover { color: var(--color-accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0 30px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .related-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .article-header { padding: 28px 30px 8px; }
  .article-content { padding: 24px 30px 34px; }
  .article-tags { padding: 0 30px 32px; }
}

@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.2);
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    padding: 12px 18px;
    font-size: 15px;
    border-radius: 10px;
  }
  .header-cta { display: none; }
  .nav-toggle {
    display: inline-flex;
  }
  .page-banner { padding: 52px 0 58px; }
  .page-banner h2 { font-size: 28px; }
  .page-banner .banner-desc { font-size: 15px; }
  .article-header h1 { font-size: 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .article-cover img { max-height: 260px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section-head h2 { font-size: 26px; }
  .page-banner h2 { font-size: 24px; }
  .article-header { padding: 22px 20px 6px; }
  .article-content { padding: 20px 20px 28px; }
  .article-tags { padding: 0 20px 26px; }
  .article-empty { padding: 60px 20px; }
  .section-head { margin-bottom: 32px; }
  .related-body { padding: 18px 18px 22px; }
  .cta-box h2 { font-size: 26px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 260px; }
  .article-meta { gap: 12px; font-size: 12px; }
}

/* roulang page: category2 */
:root {
  --primary: #0d2b52;
  --primary-light: #1a4a8a;
  --primary-deep: #081c36;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.14);
  --accent-2: #f59e0b;
  --bg: #f4f7fb;
  --bg-white: #ffffff;
  --bg-deep: #0b1d3a;
  --text: #1e293b;
  --text-weak: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --shadow: 0 20px 45px rgba(13, 43, 82, 0.08);
  --shadow-lg: 0 30px 70px rgba(13, 43, 82, 0.16);
  --shadow-hover: 0 24px 50px rgba(13, 43, 82, 0.16);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --container-w: 1200px;
  --space-section: 96px;
}

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

html {
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

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

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--space-section) 0;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
  border: 1px solid rgba(45, 212, 191, 0.28);
}

.section-title {
  font-size: 36px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
  cursor: pointer;
  white-space: nowrap;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #14b8a6 100%);
  color: #082f2c;
  border-color: transparent;
  box-shadow: 0 10px 25px rgba(45, 212, 191, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 35px rgba(45, 212, 191, 0.45);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.55);
  color: #ffffff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #ffffff;
  transform: translateY(-3px);
}

.btn-dark {
  background: var(--primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 10px 25px rgba(13, 43, 82, 0.25);
}

.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-3px);
  box-shadow: 0 16px 35px rgba(13, 43, 82, 0.28);
}

.btn-light {
  background: #ffffff;
  color: var(--primary);
  border-color: transparent;
  box-shadow: 0 10px 25px rgba(255, 255, 255, 0.25);
}

.btn-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(255, 255, 255, 0.35);
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(226, 232, 240, 0.65);
  box-shadow: 0 1px 20px rgba(13, 43, 82, 0.04);
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(13, 43, 82, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo i {
  font-size: 22px;
  color: var(--accent-2);
  background: rgba(245, 158, 11, 0.12);
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  position: relative;
  transition: all var(--transition);
}

.main-nav a:hover {
  background: rgba(13, 43, 82, 0.06);
  color: var(--primary);
}

.main-nav a.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(13, 43, 82, 0.22);
}

.header-cta {
  display: flex;
  align-items: center;
}

.header-cta .btn {
  padding: 9px 20px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(13, 43, 82, 0.06);
  color: var(--primary);
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: rgba(13, 43, 82, 0.12);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: linear-gradient(120deg, rgba(8, 28, 54, 0.92), rgba(13, 43, 82, 0.72)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #ffffff;
  padding: 80px 0;
  overflow: hidden;
  isolation: isolate;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(45, 212, 191, 0.24), transparent 60%);
  z-index: -1;
}

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.hero-breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
}

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

.hero-breadcrumb span {
  opacity: 0.5;
}

.hero-breadcrumb .current {
  color: var(--accent);
  opacity: 1;
}

.hero h1 {
  font-size: 48px;
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  max-width: 720px;
}

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

.hero p {
  font-size: 18px;
  line-height: 1.8;
  max-width: 640px;
  color: rgba(255, 255, 255, 0.86);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-tags .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(4px);
}

.hero-tags .tag i {
  color: var(--accent);
}

/* ===== Stats ===== */
.stats-section {
  margin-top: -64px;
  position: relative;
  z-index: 10;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226, 232, 240, 0.7);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}

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

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-icon.teal {
  background: rgba(45, 212, 191, 0.14);
  color: #0f9a8e;
}

.stat-icon.indigo {
  background: rgba(59, 130, 246, 0.12);
  color: #2563eb;
}

.stat-icon.amber {
  background: rgba(245, 158, 11, 0.14);
  color: #d97706;
}

.stat-icon.rose {
  background: rgba(244, 63, 94, 0.12);
  color: #e11d48;
}

.stat-num {
  font-size: 30px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 2px;
}

/* ===== Experience Cards ===== */
.experience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.experience-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.7);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.experience-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.experience-card .cover {
  height: 190px;
  overflow: hidden;
  position: relative;
}

.experience-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.experience-card .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 43, 82, 0.55), transparent 60%);
}

.experience-card .icon {
  position: absolute;
  left: 20px;
  bottom: -24px;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--accent);
  color: #082f2c;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 12px 25px rgba(45, 212, 191, 0.4);
  z-index: 2;
}

.experience-card .content {
  padding: 38px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.experience-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.experience-card p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.75;
  flex: 1;
}

.experience-card .link {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 14px;
  color: var(--accent-2);
}

.experience-card .link i {
  transition: transform var(--transition);
}

.experience-card:hover .link i {
  transform: translateX(4px);
}

/* ===== Compare ===== */
.compare-section {
  background: var(--bg-deep);
  background-image: linear-gradient(135deg, rgba(45, 212, 191, 0.06), transparent 50%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  position: relative;
  color: #ffffff;
}

.compare-section .section-title {
  color: #ffffff;
}

.compare-section .section-subtitle {
  color: rgba(255, 255, 255, 0.65);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 960px;
  margin: 0 auto;
}

.compare-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
}

.compare-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.compare-card.compare-old::before {
  background: rgba(244, 63, 94, 0.7);
}

.compare-card.compare-new::before {
  background: var(--accent);
}

.compare-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.compare-old .compare-label {
  background: rgba(244, 63, 94, 0.16);
  color: #fda4af;
  border: 1px solid rgba(244, 63, 94, 0.35);
}

.compare-new .compare-label {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(45, 212, 191, 0.35);
}

.compare-card h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 20px;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

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

.compare-list li i {
  margin-top: 4px;
  font-size: 16px;
  flex-shrink: 0;
}

.compare-old .compare-list li i {
  color: #fb7185;
}

.compare-new .compare-list li i {
  color: var(--accent);
}

/* ===== Feedback ===== */
.feedback-wrap {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 32px;
  align-items: stretch;
}

.feedback-summary {
  background: var(--primary);
  color: #ffffff;
  border-radius: var(--radius);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-image: linear-gradient(135deg, rgba(45, 212, 191, 0.18), transparent), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  position: relative;
}

.feedback-summary .score {
  font-size: 68px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.feedback-summary .score small {
  font-size: 24px;
  opacity: 0.65;
  font-weight: 700;
}

.feedback-summary .stars {
  color: var(--accent-2);
  font-size: 18px;
  margin-bottom: 16px;
}

.feedback-summary p {
  opacity: 0.85;
  font-size: 15px;
}

.rating-bars {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rating-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  opacity: 0.9;
}

.rating-row .bar-track {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  overflow: hidden;
}

.rating-row .bar-fill {
  height: 100%;
  background: var(--accent-2);
  border-radius: 999px;
}

.feedback-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feedback-card {
  background: var(--bg-white);
  border: 1px solid rgba(226, 232, 240, 0.7);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

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

.feedback-card .quote {
  font-size: 32px;
  color: var(--accent-2);
  line-height: 1;
  margin-bottom: 14px;
}

.feedback-card p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
  flex: 1;
}

.feedback-card .author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.feedback-card .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
}

.feedback-card .author span {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}

.feedback-card .author small {
  display: block;
  font-size: 12px;
  color: var(--text-weak);
  font-weight: 400;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: 0 4px 15px rgba(13, 43, 82, 0.03);
}

.faq-item:hover {
  border-color: rgba(45, 212, 191, 0.4);
}

.faq-item.active {
  border-color: rgba(45, 212, 191, 0.55);
  box-shadow: 0 12px 30px rgba(13, 43, 82, 0.08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
}

.faq-question i {
  color: var(--accent-2);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 22px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.9;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(8, 28, 54, 0.94), rgba(13, 43, 82, 0.84)), url('/assets/images/backpic/back-2.png') center/cover;
  color: #ffffff;
  text-align: center;
}

.cta-content {
  max-width: 680px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 17px;
  opacity: 0.85;
  margin-bottom: 32px;
}

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

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, 0.72);
  padding: 64px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
  font-size: 20px;
  color: #ffffff;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand h3 i {
  color: var(--accent-2);
}

.footer-brand p {
  max-width: 420px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.58);
}

.footer-col h4 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom span:first-child {
  color: rgba(255, 255, 255, 0.55);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --space-section: 76px;
  }

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

  .feedback-wrap {
    grid-template-columns: 1fr;
  }

  .feedback-summary {
    padding: 32px;
  }

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

@media (max-width: 768px) {
  :root {
    --space-section: 64px;
  }

  .header-inner {
    flex-wrap: wrap;
    min-height: 64px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
    order: 2;
  }

  .header-cta {
    order: 3;
  }

  .header-cta .btn {
    padding: 9px 16px;
    font-size: 14px;
  }

  .main-nav {
    display: none;
    width: 100%;
    order: 4;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 0 8px;
    border-top: 1px solid var(--border);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 16px;
  }

  .hero {
    min-height: auto;
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 34px;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .stat-card {
    padding: 20px 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .stat-num {
    font-size: 24px;
  }

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

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

  .feedback-cards {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .hero-actions {
    flex-direction: column;
  }

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

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

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

  .section-title {
    font-size: 25px;
  }

  .header-cta .btn {
    font-size: 13px;
    padding: 8px 14px;
  }

  .logo {
    font-size: 17px;
  }

  .logo i {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .cta-content h2 {
    font-size: 27px;
  }

  .feedback-summary .score {
    font-size: 54px;
  }
}

/* ===== Focus accessibility ===== */
a:focus-visible,
button:focus-visible,
.faq-question:focus-visible {
  outline: 3px solid rgba(45, 212, 191, 0.6);
  outline-offset: 2px;
  border-radius: 8px;
}

/* roulang page: category3 */
:root {
  --primary: #0f1b2d;
  --primary-light: #1e3a5f;
  --accent: #e8a838;
  --accent-dark: #c98a1e;
  --bg: #f5f7fa;
  --bg-alt: #eef1f6;
  --text: #1b2738;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow: 0 10px 32px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 18px 50px rgba(15, 23, 42, 0.14);
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-main);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: all .25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, select, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 18, 33, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 2px 18px rgba(0, 0, 0, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .5px;
  white-space: nowrap;
  transition: opacity .25s;
}
.logo i {
  color: var(--accent);
  font-size: 26px;
  filter: drop-shadow(0 0 8px rgba(232, 168, 56, 0.4));
}
.logo:hover { opacity: .85; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  font-weight: 500;
  transition: all .25s;
  border: 1px solid transparent;
}
.main-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.main-nav a.active {
  color: var(--primary);
  background: var(--accent);
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(232, 168, 56, 0.35);
}

.header-cta { display: flex; align-items: center; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  transition: all .3s ease;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--primary);
  box-shadow: 0 6px 20px rgba(232, 168, 56, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(232, 168, 56, 0.5);
}
.btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: #fff;
  font-size: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* ---------- Banner ---------- */
.page-banner {
  position: relative;
  padding: 96px 0 84px;
  background: linear-gradient(140deg, rgba(7, 14, 26, 0.94) 0%, rgba(20, 38, 66, 0.88) 55%, rgba(30, 58, 95, 0.78) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  text-align: center;
}
.page-banner .banner-inner { max-width: 780px; margin: 0 auto; padding: 0 24px; }

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 24px;
  backdrop-filter: blur(6px);
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 12px; opacity: .7; }
.breadcrumb .current { color: var(--accent); font-weight: 600; }

.page-banner h1 {
  font-size: clamp(34px, 5.5vw, 54px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #fff 0%, #f0d9a8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-banner p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.banner-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}
.banner-badges .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
}
.banner-badges .badge i { color: var(--accent); }

/* ---------- Section commons ---------- */
.section { padding: 90px 0; }
.section.bg-alt { background: var(--bg-alt); }
.section.alt-white { background: #fff; }
.section-dark { background: linear-gradient(135deg, #0b1524 0%, #14233f 70%, #1b3154 100%); color: #fff; }

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232, 168, 56, 0.12);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-dark .section-tag {
  background: rgba(232, 168, 56, 0.16);
  color: var(--accent);
}
.section-title {
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: .3px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
}
.section-dark .section-desc { color: rgba(255, 255, 255, 0.65); }

/* ---------- Intro ---------- */
.tutorial-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.intro-copy h2 {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.3;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: .3px;
}
.intro-copy p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 24px;
}
.intro-copy .intro-list { margin-top: 24px; }
.intro-copy .intro-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text);
}
.intro-copy .intro-list i {
  color: var(--accent-dark);
  font-size: 18px;
  margin-top: 3px;
}
.intro-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.stat-card .num {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-card .num em { font-style: normal; color: var(--accent); font-size: 24px; }
.stat-card .label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---------- Tutorial cards ---------- */
.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.tutorial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .35s ease;
  display: flex;
  flex-direction: column;
}
.tutorial-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232, 168, 56, 0.4);
}
.card-img {
  position: relative;
  height: 210px;
  overflow: hidden;
  background: var(--bg-alt);
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.tutorial-card:hover .card-img img { transform: scale(1.06); }
.card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 27, 45, 0.35) 0%, transparent 50%);
}
.card-level {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  background: var(--accent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}
.card-body {
  padding: 26px 26px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent-dark);
  background: rgba(232, 168, 56, 0.1);
  padding: 4px 14px;
  border-radius: 999px;
  width: fit-content;
  margin-bottom: 14px;
  font-weight: 600;
}
.card-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text);
}
.card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}
.card-meta .learn-btn {
  color: var(--accent-dark);
  font-weight: 600;
  font-size: 14px;
  transition: color .2s;
}
.card-meta .learn-btn:hover { color: var(--primary); }
.card-meta .learn-btn i { margin-left: 4px; transition: transform .2s; }
.card-meta .learn-btn:hover i { transform: translateX(4px); }

/* ---------- Popular list ---------- */
.popular-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 40px;
}
.popular-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: all .25s;
}
.popular-item:last-child { border-bottom: 0; padding-bottom: 0; }
.popular-item:first-child { padding-top: 0; }
.popular-item:hover { transform: translateX(6px); }
.popular-num {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  font-size: 19px;
  font-weight: 800;
  background: var(--bg-alt);
  color: var(--text-muted);
  transition: all .25s;
}
.popular-item:nth-child(1) .popular-num { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--primary); }
.popular-item:nth-child(2) .popular-num { background: #eef3fb; color: var(--primary-light); }
.popular-item:nth-child(3) .popular-num { background: #fdf0f0; color: #b45353; }
.popular-item:hover .popular-num { transform: scale(1.08); }
.popular-info { flex: 1; }
.popular-info h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}
.popular-info p {
  font-size: 13px;
  color: var(--text-muted);
}
.popular-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg);
  padding: 6px 16px;
  border-radius: 999px;
  white-space: nowrap;
}
.popular-stat i { color: var(--accent-dark); }

/* ---------- Learning path ---------- */
.path-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 20px;
}
.path-step {
  text-align: center;
  padding: 36px 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all .3s;
  position: relative;
}
.path-step:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  border-color: var(--accent);
}
.step-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--primary);
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(232, 168, 56, 0.35);
}
.path-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.path-step p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}
.path-step .step-arrow {
  position: absolute;
  right: -26px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 20px;
  z-index: 2;
  opacity: .7;
}
.path-step:last-child .step-arrow { display: none; }

/* ---------- 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;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.faq-item.open {
  border-color: rgba(232, 168, 56, 0.5);
  box-shadow: var(--shadow);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: var(--white);
  transition: all .25s;
}
.faq-question:hover { color: var(--accent-dark); }
.faq-question .faq-icon {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 14px;
  transition: all .3s;
}
.faq-item.open .faq-icon {
  background: var(--accent);
  color: var(--primary);
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 26px 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  overflow: hidden;
}
.cta-box {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(15, 27, 45, 0.95) 0%, rgba(28, 52, 88, 0.92) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding: 70px 60px;
  text-align: center;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
}
.cta-box h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.cta-box p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.cta-box .btn-group {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.cta-note {
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0a1420;
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 46px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand h3 i { color: var(--accent); font-size: 24px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.55);
  max-width: 360px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: all .25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col ul a i { font-size: 10px; color: var(--accent); opacity: .6; transition: all .25s; }
.footer-col ul a:hover { color: var(--accent); transform: translateX(4px); }
.footer-col ul a:hover i { opacity: 1; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom span { line-height: 1.6; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .tutorial-grid { grid-template-columns: repeat(2, 1fr); }
  .tutorial-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .path-steps { grid-template-columns: repeat(2, 1fr); }
  .path-step .step-arrow { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-inner { height: 64px; gap: 10px; }
  .logo { font-size: 17px; }
  .logo i { font-size: 21px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 18, 33, 0.98);
    padding: 20px;
    gap: 6px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  }
  .site-header.nav-open .main-nav { display: flex; }
  .main-nav a { display: block; text-align: center; padding: 12px 20px; }
  .header-cta .btn { padding: 9px 18px; font-size: 14px; }
  .nav-toggle { display: inline-flex; }
  .section { padding: 64px 0; }
  .page-banner { padding: 60px 0 52px; }
  .tutorial-grid { grid-template-columns: 1fr; }
  .intro-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 22px 16px; }
  .stat-card .num { font-size: 28px; }
  .popular-wrap { padding: 24px; }
  .popular-item { flex-wrap: wrap; gap: 12px; }
  .popular-stat { margin-left: auto; }
  .cta-box { padding: 44px 24px; }
  .cta-box .btn-group { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-cta .btn { display: none; }
  .nav-toggle { margin-left: auto; }
  .page-banner h1 { font-size: 30px; }
  .section-title { font-size: 24px; }
  .intro-stats { grid-template-columns: 1fr; }
  .path-steps { grid-template-columns: 1fr; }
  .banner-badges .badge { font-size: 12px; padding: 6px 14px; }
  .tutorial-card .card-img { height: 180px; }
  .card-body { padding: 20px; }
  .popular-item { flex-direction: column; align-items: flex-start; padding: 18px 0; }
  .popular-stat { margin-left: 0; }
  .faq-question { padding: 18px 16px; font-size: 15px; }
  .faq-answer-inner { padding: 0 16px 18px; }
  .cta-box h2 { font-size: 26px; }
}

/* Focus visible for accessibility */
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(232, 168, 56, 0.6);
  outline-offset: 2px;
  border-radius: 6px;
}