/* roulang page: index */
:root {
  --primary: #0F3D33;
  --primary-dark: #092622;
  --primary-light: #E4EFEA;
  --accent: #C9924D;
  --cta: #DDA64A;
  --accent-dark: #A9742F;
  --bg: #F5F1E8;
  --card-bg: #FFFFFF;
  --bg-warm: #EFE9DC;
  --text-main: #1F1E1A;
  --text-sub: #6D6B62;
  --text-muted: #9A968C;
  --border: #E5DCC8;
  --divider: #EDE5D4;
  --success: #2F7D5C;
  --danger: #BC3E2B;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(15,61,51,0.08);
  --shadow-hover: 0 8px 24px rgba(15,61,51,0.16);
  --space-section: 96px;
  --space-section-mobile: 64px;
  --container: 1200px;
  --font-stack: "PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-stack);font-size:15px;line-height:1.75;color:var(--text-main);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
ul,ol{list-style:none}
button{border:none;background:none;cursor:pointer;font-family:inherit}
input,textarea,select{font-family:inherit;font-size:14px;color:var(--text-main);outline:none;border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 14px;height:44px;width:100%;background:#fff;transition:border-color .2s,box-shadow .2s}
textarea{height:auto;padding:12px 14px;resize:vertical;min-height:90px}
input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(201,146,77,.15)}
label{font-size:13px;color:var(--text-sub);display:block;margin-bottom:6px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0}
@media(max-width:640px){.section{padding:var(--space-section-mobile) 0}.container{padding:0 16px}}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;padding:12px 28px;border-radius:var(--radius-sm);transition:all .25s ease;line-height:1.4;border:1px solid transparent}
.btn-primary{background:var(--cta);color:#2B2115}
.btn-primary:hover{background:var(--accent);transform:translateY(-1px);box-shadow:0 6px 16px rgba(201,146,77,.35)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-secondary:hover{background:var(--primary-light);color:var(--primary)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.25);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.4)}
.btn:focus-visible{outline:2px solid var(--cta);outline-offset:2px}

/* 徽章 */
.badge{display:inline-block;background:var(--accent);color:#fff;font-size:12px;line-height:1;padding:6px 12px;border-radius:999px;font-weight:500}

/* 分节标题 */
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px;flex-wrap:wrap;gap:16px}
.section-head h2{font-size:30px;font-weight:800;color:var(--text-main);line-height:1.3;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:28px;background:var(--accent);border-radius:2px}
.section-head .more-link{font-size:14px;color:var(--text-sub);display:inline-flex;align-items:center;gap:4px;transition:color .2s}
.section-head .more-link:hover{color:var(--accent-dark)}
.section-head.center{justify-content:center;text-align:center}
.section-head.center h2{padding-left:0}
.section-head.center h2::before{display:none}
.section-head.center::after{content:"";display:block;width:64px;height:3px;background:var(--accent);margin:20px auto 0}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid var(--divider);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;height:72px;gap:24px}
.logo{flex-shrink:0}
.logo a{display:flex;align-items:center;gap:10px}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--primary);display:flex;align-items:center;justify-content:center;color:var(--cta);font-size:15px;font-weight:800;letter-spacing:.5px}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:18px;font-weight:800;color:var(--text-main);letter-spacing:1px}
.logo-text small{font-size:11px;color:var(--text-muted);letter-spacing:2px}
.main-nav{flex:1}
.main-nav>ul{display:flex;gap:8px;justify-content:center}
.main-nav>ul>li{position:relative}
.main-nav>ul>li>a{display:block;padding:8px 16px;font-size:15px;font-weight:500;color:var(--text-sub);border-radius:6px;transition:color .2s,background .2s;position:relative}
.main-nav>ul>li>a:hover{color:var(--primary);background:var(--primary-light)}
.main-nav>ul>li.active>a{color:var(--primary);font-weight:700}
.main-nav>ul>li.active>a::after{content:"";position:absolute;left:16px;right:16px;bottom:-2px;height:2px;background:var(--accent);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.login-link{font-size:14px;color:var(--text-sub);font-weight:500}
.login-link:hover{color:var(--primary)}
.mega-trigger{position:relative}
.more-btn{width:40px;height:40px;border-radius:8px;background:var(--bg-warm);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:18px;transition:background .2s}
.more-btn:hover{background:var(--primary-light)}
.mega-panel{position:absolute;top:calc(100% + 12px);right:0;width:680px;background:#fff;border-radius:var(--radius);box-shadow:0 8px 32px rgba(15,61,51,.18);padding:28px;display:none;grid-template-columns:1.2fr 1fr .9fr;gap:28px;z-index:1001}
.mega-panel::before{content:"";position:absolute;top:-8px;right:18px;width:16px;height:16px;background:#fff;transform:rotate(45deg);border-radius:2px}
.mega-trigger:hover .mega-panel,.mega-trigger:focus-within .mega-panel{display:grid;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.mega-panel h4{font-size:13px;color:var(--text-muted);font-weight:600;letter-spacing:1px;margin-bottom:16px;text-transform:uppercase;border-bottom:1px solid var(--divider);padding-bottom:8px}
.mega-cats{display:flex;flex-direction:column;gap:8px}
.mega-cat-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;border:1px solid var(--border);transition:all .2s;font-size:14px;font-weight:500}
.mega-cat-item i{color:var(--accent);font-size:16px;width:22px;text-align:center}
.mega-cat-item:hover{border-color:var(--accent);background:var(--primary-light);transform:translateX(3px)}
.mega-news{display:flex;flex-direction:column;gap:12px}
.mega-news-item{display:flex;flex-direction:column;gap:2px;padding:8px 0;border-bottom:1px solid var(--divider)}
.mega-news-item:last-child{border-bottom:none}
.mega-news-item span{font-size:13px;color:var(--text-main);font-weight:500;transition:color .2s}
.mega-news-item time{font-size:12px;color:var(--text-muted)}
.mega-news-item:hover span{color:var(--accent-dark)}
.mega-tools{display:flex;flex-direction:column;gap:12px;justify-content:center}
.mega-tools .btn{width:100%;font-size:14px;padding:12px}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--divider);padding:16px}
.mobile-menu a{display:block;padding:12px 16px;font-size:15px;font-weight:500;color:var(--text-main);border-bottom:1px solid var(--divider);transition:background .2s}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a:hover{background:var(--bg-warm)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:8px;background:var(--bg-warm);justify-content:center;align-items:center;font-size:18px;color:var(--primary)}
@media(max-width:1024px){
  .main-nav{display:none}
  .header-actions .login-link,.header-actions .btn-primary{display:none}
  .menu-toggle{display:flex}
  .mega-panel{display:none!important}
  .header-actions .btn-primary{margin-left:auto}
}
@media(max-width:640px){
  .logo-text strong{font-size:16px}
  .logo-text small{font-size:10px}
}

/* Hero */
.hero{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 55%,rgba(15,61,51,.88) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;color:#fff;position:relative;overflow:hidden}
.hero-inner{display:flex;align-items:center;min-height:560px;padding:80px 0}
.hero-content{flex:1;max-width:640px;position:relative;z-index:2}
.hero-badge{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:6px 16px;font-size:13px;color:rgba(255,255,255,.85);margin-bottom:24px;backdrop-filter:blur(4px)}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:1px;margin-bottom:20px}
.hero h1 span{color:var(--cta)}
.hero-sub{font-size:16px;line-height:1.7;color:rgba(255,255,255,.82);margin-bottom:32px;max-width:480px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.hero-trust{display:flex;gap:20px;flex-wrap:wrap}
.hero-trust span{font-size:13px;color:rgba(255,255,255,.72);display:inline-flex;align-items:center;gap:6px}
.hero-trust i{color:var(--cta);font-size:14px}
@media(max-width:640px){
  .hero-inner{min-height:460px;padding:56px 0}
  .hero h1{font-size:30px}
  .hero-sub{font-size:14px}
  .hero-actions .btn{width:100%;text-align:center}
  .hero-trust{gap:12px}
}

/* 指标看板 */
.stats-section{background:var(--bg-warm);padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{text-align:center;padding:16px 24px;position:relative}
.stat-item:not(:last-child)::after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:56px;background:var(--border)}
.stat-num{font-size:40px;font-weight:800;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-num small{font-size:16px;font-weight:600;margin-left:2px}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:6px}
@media(max-width:640px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2)::after{display:none}
  .stat-item{padding:16px 12px}
  .stat-num{font-size:32px}
}

/* 服务矩阵 */
.service-a{display:flex;align-items:center;gap:24px;background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px;height:100%;transition:all .3s ease}
.service-a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent)}
.service-icon{width:56px;height:56px;border-radius:50%;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--accent);flex-shrink:0}
.service-a h3{font-size:18px;font-weight:700;margin-bottom:8px}
.service-a p{font-size:14px;color:var(--text-sub);line-height:1.6;margin-bottom:8px}
.service-a .service-link{font-size:14px;color:var(--accent-dark);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.service-a .service-link:hover{color:var(--primary)}
.service-b{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:left;transition:all .3s ease;height:100%}
.service-b:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent)}
.service-b .service-icon{width:44px;height:44px;font-size:19px;margin-bottom:16px}
.service-b h3{font-size:16px;font-weight:700;margin-bottom:6px}
.service-b p{font-size:13px;color:var(--text-sub);line-height:1.6}
@media(max-width:640px){
  .service-a{flex-direction:column;text-align:center}
  .service-a .service-link{justify-content:center}
}

/* 结果对比 */
.comparison-section{background:#fff;padding:var(--space-section) 0}
.comparison-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:stretch;max-width:960px;margin:40px auto 32px}
.comparison-card{border-radius:var(--radius);padding:32px;position:relative}
.comparison-card.bad{background:var(--bg-warm);color:var(--text-main)}
.comparison-card.good{background:var(--primary);color:#fff}
.comparison-card h3{font-size:18px;font-weight:700;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.15)}
.comparison-card.bad h3{border-color:var(--border)}
.comparison-card ul{display:flex;flex-direction:column;gap:14px}
.comparison-card li{display:flex;align-items:center;gap:10px;font-size:15px;line-height:1.4}
.comparison-card li i{width:20px;text-align:center;font-size:15px;flex-shrink:0}
.comparison-card.bad li i{color:var(--danger)}
.comparison-card.good li i{color:var(--cta)}
.comparison-vs{display:flex;align-items:center;justify-content:center}
.comparison-vs span{width:48px;height:48px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;box-shadow:0 4px 12px rgba(201,146,77,.4)}
.comparison-btn-wrap{text-align:center}
@media(max-width:768px){
  .comparison-grid{grid-template-columns:1fr;gap:16px}
  .comparison-vs{order:-1;padding:8px 0}
}

/* 资讯 */
.news-section{background:var(--bg-warm);padding:var(--space-section) 0}
.news-card-featured{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .3s;height:100%}
.news-card-featured:hover{box-shadow:var(--shadow-hover)}
.news-card-featured__cover{position:relative;padding-top:56.25%;overflow:hidden}
.news-card-featured__cover img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card-featured:hover .news-card-featured__cover img{transform:scale(1.04)}
.news-card-featured__cover .badge{position:absolute;top:12px;left:12px;z-index:2}
.news-card-featured__body{padding:24px}
.news-card-featured__body h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:10px;transition:color .2s}
.news-card-featured__body h3:hover{color:var(--accent-dark)}
.news-card-featured__body p{font-size:14px;color:var(--text-sub);line-height:1.6;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card-featured__meta{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:16px}
.news-card-featured__meta span{display:inline-flex;align-items:center;gap:5px}
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{background:#fff;border-radius:10px;padding:12px;border:1px solid var(--border);transition:box-shadow .25s,border-color .25s}
.news-item:hover{box-shadow:var(--shadow-hover);border-color:var(--accent)}
.news-item a{display:flex;gap:14px;align-items:center}
.news-item__thumb{width:96px;height:68px;border-radius:8px;overflow:hidden;flex-shrink:0}
.news-item__thumb img{width:100%;height:100%;object-fit:cover}
.news-item__info{flex:1}
.news-item__info h4{font-size:15px;font-weight:600;line-height:1.4;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s}
.news-item__info h4:hover{color:var(--accent-dark)}
.news-item__meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-muted)}
.news-item__meta .badge{font-size:11px;padding:4px 8px}
.news-empty{text-align:center;padding:60px 20px;color:var(--text-muted);font-size:15px;background:#fff;border-radius:var(--radius);border:1px dashed var(--border)}
@media(max-width:768px){
  .news-item__thumb{width:80px;height:56px}
}

/* FAQ */
.faq-section{background:#fff;padding:var(--space-section) 0}
.faq-side h2{font-size:30px;font-weight:800;margin-bottom:16px}
.faq-side p{color:var(--text-sub);font-size:15px;margin-bottom:24px}
.accordion-item{background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:12px;overflow:hidden;transition:border-color .25s,box-shadow .25s}
.accordion-item.open{border-color:var(--accent);box-shadow:0 2px 12px rgba(201,146,77,.12)}
.accordion-question{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;font-size:16px;font-weight:600;cursor:pointer;width:100%;text-align:left;background:none;color:var(--text-main);transition:color .2s}
.accordion-question:hover{color:var(--primary)}
.accordion-question i{font-size:18px;color:var(--accent);transition:transform .3s;flex-shrink:0;margin-left:16px}
.accordion-item.open .accordion-question i{transform:rotate(45deg)}
.accordion-answer{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .25s}
.accordion-item.open .accordion-answer{max-height:300px;padding:0 20px 18px}
.accordion-answer p{font-size:14px;color:var(--text-sub);line-height:1.75}
@media(max-width:768px){
  .faq-side{margin-bottom:32px}
}

/* 转化表单 */
.cta-section{background:var(--primary-dark);color:#fff;padding:var(--space-section) 0;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px;pointer-events:none}
.cta-content{position:relative;z-index:2}
.cta-content h2{font-size:32px;font-weight:800;line-height:1.3;margin-bottom:16px}
.cta-content p{color:rgba(255,255,255,.75);font-size:14px;margin-bottom:24px}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:rgba(255,255,255,.9)}
.cta-points i{color:var(--cta);font-size:16px}
.cta-contact{margin-top:24px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12)}
.cta-contact p{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.8);margin-bottom:8px}
.cta-contact i{color:var(--cta)}
.cta-form-card{background:#fff;border-radius:var(--radius);padding:36px;color:var(--text-main);box-shadow:0 16px 40px rgba(0,0,0,.25);position:relative;z-index:2}
.cta-form-card .form-group{margin-bottom:20px}
.cta-form-card .form-check{display:flex;align-items:flex-start;gap:10px;margin:20px 0}
.cta-form-card .form-check input{width:auto;height:auto;accent-color:var(--primary)}
.cta-form-card .form-check label{font-size:12px;color:var(--text-muted);margin:0;flex:1;line-height:1.5}
.cta-form-card .btn{width:100%;margin-top:8px}
@media(max-width:768px){
  .cta-form-card{padding:24px}
}

/* 页脚 */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.75);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .logo a{color:#fff}
.footer-brand .logo-mark{background:var(--cta);color:var(--primary-dark)}
.footer-brand p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.6);margin-top:16px}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;font-size:14px;color:rgba(255,255,255,.7);transition:background .2s,color .2s}
.footer-social a:hover{background:var(--cta);color:var(--primary-dark)}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:20px;letter-spacing:.5px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:13px;color:rgba(255,255,255,.55);transition:color .2s}
.footer-col ul a:hover{color:var(--cta)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:14px}
.footer-contact i{color:var(--cta);margin-top:4px;flex-shrink:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.4)}
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
}

/* 动画 */
@keyframes heroFloat{0%{transform:translateY(0)}50%{transform:translateY(-10px)}100%{transform:translateY(0)}}

/* roulang page: category1 */
:root {
  --primary: #0F3D33;
  --primary-dark: #092622;
  --primary-light: #E4EFEA;
  --accent: #C9924D;
  --accent-light: #DDA64A;
  --accent-dark: #A9742F;
  --bg: #F5F1E8;
  --card-bg: #FFFFFF;
  --bg-secondary: #EFE9DC;
  --text: #1F1E1A;
  --text-secondary: #6D6B62;
  --text-muted: #9A968C;
  --border: #E5DCC8;
  --divider: #EDE5D4;
  --success: #2F7D5C;
  --danger: #BC3E2B;
  --warning: #B7791F;
  --shadow: 0 2px 8px rgba(15,61,51,0.08);
  --shadow-hover: 0 8px 24px rgba(15,61,51,0.16);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-badge: 999px;
  --trans: all 0.25s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--trans);
}
a:hover {
  color: var(--accent-dark);
  text-decoration: none;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 2px;
  border-radius: 4px;
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding: 80px 0;
}
.section-alt {
  background-color: var(--bg-secondary);
}
.section-white {
  background-color: var(--card-bg);
}
.section-head {
  text-align: left;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary);
  letter-spacing: 0.5px;
}
.section-head .line {
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 14px;
}
.section-head p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 14px;
  max-width: 640px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  transition: var(--trans);
  cursor: pointer;
  line-height: 1.4;
  min-height: 44px;
  font-family: inherit;
}
.btn-primary {
  background-color: var(--accent-light);
  color: #1F1E1A;
  border-color: var(--accent-light);
}
.btn-primary:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #1F1E1A;
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover {
  background: rgba(15,61,51,0.08);
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline-light {
  background: transparent;
  color: #F5F1E8;
  border: 1px solid rgba(255,255,255,0.35);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-lg {
  padding: 15px 36px;
  font-size: 16px;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
  min-height: 36px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 110;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--divider);
  box-shadow: 0 1px 6px rgba(15,61,51,0.04);
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--primary);
  color: var(--accent-light);
  font-weight: 800;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-text strong {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}
.logo-text small {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
}
.main-nav {
  display: flex;
  align-items: center;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav ul li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 6px;
  position: relative;
  transition: var(--trans);
}
.main-nav ul li a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: var(--trans);
}
.main-nav ul li a:hover {
  color: var(--primary);
  background-color: var(--primary-light);
}
.main-nav ul li a:hover::after {
  width: 24px;
}
.main-nav ul li.active a {
  color: var(--primary);
  font-weight: 700;
}
.main-nav ul li.active a::after {
  width: 24px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.header-login {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}
.header-login:hover {
  color: var(--primary);
}
.nav-toggle-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.nav-toggle-label {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  border: 1px solid var(--border);
  cursor: pointer;
  background: #fff;
  transition: var(--trans);
}
.nav-toggle-label:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

/* ===== Hero ===== */
.cat-hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, #F1EBDD 55%, rgba(201,146,77,0.18) 100%);
  padding: 60px 0 70px;
  position: relative;
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,146,77,0.12), transparent 70%);
  pointer-events: none;
}
.cat-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.breadcrumb a {
  color: var(--text-muted);
}
.breadcrumb a:hover {
  color: var(--accent-dark);
}
.breadcrumb span {
  color: var(--text-secondary);
}
.cat-hero h1 {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.cat-hero .hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.75;
  margin-bottom: 28px;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.hero-badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--primary);
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  padding: 5px 16px;
}
.hero-badges i {
  color: var(--accent);
}

/* ===== Intro ===== */
.intro-section {
  padding: 80px 0;
  background: var(--card-bg);
}
.intro-copy h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 20px;
  line-height: 1.35;
}
.intro-copy p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}
.intro-copy p:last-child {
  margin-bottom: 0;
}
.intro-img {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.intro-img img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
}
.intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}
.intro-tags span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: var(--radius-badge);
  font-weight: 500;
}
.intro-tags i {
  color: var(--accent);
  font-size: 12px;
}

/* ===== Feature Cards ===== */
.feature-cards {
  padding: 80px 0;
  background: var(--bg);
}
.card-service {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: var(--trans);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card-service:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}
.card-service .card-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 20px;
}
.card-service h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.card-service p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  flex-grow: 1;
}
.card-service .card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-service .card-link i {
  transition: var(--trans);
  font-size: 12px;
}
.card-service .card-link:hover {
  color: var(--accent-dark);
}
.card-service .card-link:hover i {
  transform: translateX(4px);
}
.card-service-cover {
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  overflow: hidden;
  margin: -28px -28px 20px;
  height: 170px;
}
.card-service-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Alternating ===== */
.alternating {
  padding: 80px 0;
  background: var(--card-bg);
}
.alt-row {
  margin-bottom: 80px;
}
.alt-row:last-child {
  margin-bottom: 0;
}
.alt-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 100%;
  min-height: 240px;
}
.alt-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.alt-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px 0;
}
.alt-text .alt-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-dark);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.alt-text .alt-label::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
}
.alt-text h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 14px;
}
.alt-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

/* ===== Steps ===== */
.steps-section {
  padding: 80px 0;
  background: var(--bg-secondary);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.step-item {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  border: 1px solid var(--border);
  text-align: center;
  position: relative;
  transition: var(--trans);
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--accent-light);
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.step-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
  background: var(--card-bg);
}
.faq-grid {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 48px;
  align-items: start;
}
.faq-intro h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}
.faq-intro p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 24px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--trans);
}
.faq-item[open] {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: var(--trans);
  position: relative;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--accent);
  transition: var(--trans);
  line-height: 1;
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background-color: var(--primary-dark);
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  position: relative;
  z-index: 1;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9,38,34,0.95), rgba(15,61,51,0.82));
  z-index: -1;
}
.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: 20px 0;
}
.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #F5F1E8;
  line-height: 1.35;
  margin-bottom: 16px;
}
.cta-inner p {
  color: rgba(255,255,255,0.78);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 32px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.back-home {
  text-align: center;
  padding: 32px 0 48px;
  background: var(--primary-dark);
}
.back-home a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 22px;
  border-radius: var(--radius-badge);
  transition: var(--trans);
}
.back-home a:hover {
  color: #fff;
  border-color: var(--accent);
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand .logo {
  margin-bottom: 18px;
}
.footer-brand p {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 22px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  transition: var(--trans);
}
.footer-social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  transition: var(--trans);
}
.footer-col ul li a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
}
.footer-contact i {
  color: var(--accent);
  font-size: 14px;
  margin-top: 3px;
}
.footer-bottom {
  padding: 20px 0 28px;
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 13px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-bottom a {
  color: rgba(255,255,255,0.45);
}
.footer-bottom a:hover {
  color: var(--accent-light);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-actions {
    gap: 10px;
  }
  .main-nav ul li a {
    padding: 8px 12px;
    font-size: 14px;
  }
  .hero-buttons {
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section {
    padding: 60px 0;
  }
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--divider);
    box-shadow: var(--shadow);
    display: none;
    padding: 16px;
    z-index: 100;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .main-nav ul li a {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 15px;
  }
  .main-nav ul li a::after {
    display: none;
  }
  .main-nav ul li.active a {
    background: var(--primary-light);
  }
  .nav-toggle-input:checked ~ .main-nav {
    display: block;
  }
  .nav-toggle-label {
    display: flex;
  }
  .header-actions .header-login {
    display: none;
  }
  .header-actions .btn-sm {
    padding: 8px 14px;
    font-size: 13px;
  }
  .cat-hero h1 {
    font-size: 32px;
  }
  .cat-hero {
    padding: 44px 0 54px;
  }
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .section-head h2 {
    font-size: 24px;
  }
  .cat-hero h1 {
    font-size: 28px;
  }
  .header-actions .btn-sm {
    font-size: 12px;
    padding: 7px 12px;
  }
  .logo-text strong {
    font-size: 16px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
  .btn-lg {
    padding: 13px 26px;
    font-size: 15px;
  }
}

/* roulang page: article */
:root {
  --primary: #0F3D33;
  --primary-dark: #092622;
  --primary-light: #E4EFEA;
  --accent: #C9924D;
  --accent-dark: #A9742F;
  --cta: #DDA64A;
  --bg: #F5F1E8;
  --bg-secondary: #EFE9DC;
  --card-bg: #FFFFFF;
  --text-primary: #1F1E1A;
  --text-secondary: #6D6B62;
  --text-muted: #9A968C;
  --border: #E5DCC8;
  --divider: #EDE5D4;
  --success: #2F7D5C;
  --danger: #BC3E2B;
  --warning: #B7791F;
  --shadow-sm: 0 2px 8px rgba(15,61,51,0.08);
  --shadow-md: 0 8px 24px rgba(15,61,51,0.16);
  --radius: 12px;
  --radius-sm: 8px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: 14px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) {
  .container { padding: 0 16px; }
}

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-block;
  background: var(--cta);
  color: #1F1E1A;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-primary:hover { background: var(--accent); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(1px); box-shadow: none; }
.btn-primary:focus { outline: 2px solid var(--cta); outline-offset: 2px; }
.btn-secondary {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background .2s, color .2s;
}
.btn-secondary:hover { background: var(--primary-light); color: var(--primary); }
.btn-secondary:active { transform: translateY(1px); }
.btn-secondary:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 14px 34px; font-size: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--divider);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 18px;
}
.logo a { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 36px; height: 36px;
  background: var(--primary);
  color: var(--cta);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 15px;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text strong { font-size: 18px; font-weight: 800; color: var(--primary); white-space: nowrap; }
.logo-text small { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }
.main-nav ul { display: flex; gap: 2px; margin: 0; padding: 0; }
.main-nav a {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--text-primary);
  border-radius: 8px;
  position: relative;
  font-weight: 500;
  transition: color .2s, background .2s;
}
.main-nav a:hover { color: var(--primary); background: var(--primary-light); }
.main-nav li.active a { color: var(--primary); font-weight: 700; }
.main-nav li.active a::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-login {
  font-size: 14px; color: var(--text-secondary);
  padding: 8px 12px; font-weight: 500;
  border-radius: 8px;
}
.btn-login:hover { color: var(--primary); background: var(--primary-light); }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--primary);
  font-size: 17px;
  align-items: center; justify-content: center;
  transition: background .2s, border-color .2s;
}
.nav-toggle:hover { background: var(--primary-light); border-color: var(--accent); }
.nav-toggle.active { background: var(--primary); color: #fff; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 24px 0 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text-secondary); max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Article Section ---------- */
.article-section {
  background: var(--bg);
  padding: 0 0 72px;
}
.article-header {
  max-width: 780px;
  margin: 0 auto 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--divider);
}
.article-header h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 24px;
  color: var(--text-muted);
  font-size: 13px;
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { color: var(--accent); font-size: 14px; }
.article-body {
  max-width: 780px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
}
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 44px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin: 30px 0 12px;
}
.article-body p { margin: 0 0 16px; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--accent); }
.article-body img {
  border-radius: var(--radius);
  margin: 24px auto;
  max-width: 100%;
}
.article-body figure { margin: 24px 0; }
.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-secondary);
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text-secondary);
  border-radius: 0 8px 8px 0;
  font-size: 15px;
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body ul,
.article-body ol {
  margin: 0 0 18px;
  padding-left: 24px;
}
.article-body ul li { list-style: disc; margin-bottom: 6px; }
.article-body ol li { list-style: decimal; margin-bottom: 6px; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
  line-height: 1.6;
}
.article-body th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--primary);
}
.article-body tr:nth-child(even) td { background: var(--bg); }
.article-body code {
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, monospace;
}
.article-body pre {
  background: var(--primary-dark);
  color: #e8e4da;
  padding: 18px 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.6;
}
.article-body pre code { background: none; padding: 0; color: inherit; }
.article-footer {
  max-width: 780px;
  margin: 40px auto 0;
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--divider);
}

/* ---------- NotFound ---------- */
.not-found {
  padding: 100px 24px;
  text-align: center;
}
.not-found h1 { font-size: 32px; color: var(--primary); margin-bottom: 12px; }
.not-found p { font-size: 15px; color: var(--text-muted); margin-bottom: 28px; }

/* ---------- Related Section ---------- */
.related-section { background: var(--bg-secondary); padding: 72px 0; }
.section-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}
.section-heading h2 { font-size: 28px; font-weight: 800; color: var(--text-primary); line-height: 1.3; }
.section-heading .line { width: 48px; height: 3px; background: var(--accent); border-radius: 3px; }
.card-post {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card-post:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.card-post > a { display: flex; flex-direction: column; height: 100%; }
.card-thumb { position: relative; overflow: hidden; }
.card-thumb img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform .4s ease;
}
.card-post:hover .card-thumb img { transform: scale(1.03); }
.card-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; gap: 12px; }
.card-body h3 { font-size: 16px; font-weight: 600; line-height: 1.5; color: var(--text-primary); transition: color .2s; }
.card-post:hover .card-body h3 { color: var(--primary); }
.card-meta { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; margin-top: auto; }
.card-meta i { color: var(--accent); }

/* ---------- CTA Band ---------- */
.cta-band {
  background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  position: relative;
  padding: 80px 0;
  text-align: center;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9,38,34,0.92) 0%, rgba(15,61,51,0.88) 100%);
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 { font-size: 30px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.75); font-size: 15px; margin-bottom: 28px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
  font-size: 13px;
  line-height: 1.8;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo a { display: flex; align-items: center; gap: 10px; }
.footer-brand .logo .logo-mark {
  background: var(--cta);
  color: var(--primary-dark);
  width: 36px; height: 36px;
}
.footer-brand p { font-size: 13px; color: rgba(255,255,255,0.55); max-width: 280px; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  transition: all .2s;
}
.footer-social a:hover { border-color: var(--cta); color: var(--cta); background: rgba(255,255,255,0.05); }
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.55); font-size: 13px; }
.footer-col a:hover { color: var(--cta); }
.footer-contact li { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.55); }
.footer-contact i { color: var(--cta); font-size: 14px; width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom p { margin: 0; }
.fa-weixin::before { content: "\f1d7"; font-family: "Font Awesome 6 Free"; font-weight: 400; }
.fa-weibo::before { content: "\f18a"; font-family: "Font Awesome 6 Free"; font-weight: 400; }
.fa-qq::before { content: "\f1d6"; font-family: "Font Awesome 6 Free"; font-weight: 400; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .site-header { height: auto; }
  .header-inner { height: 64px; flex-wrap: wrap; }
  .main-nav {
    display: none;
    width: 100%;
    flex-basis: 100%;
    background: #fff;
    border-top: 1px solid var(--divider);
    padding: 12px 0;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { padding: 12px 14px; font-size: 15px; }
  .main-nav li.active a::after { display: none; }
  .main-nav li.active a { background: var(--primary-light); }
  .nav-toggle { display: inline-flex; }
  .header-actions .btn-login { display: none; }
  .article-header h1 { font-size: 26px; }
  .article-body { font-size: 15px; }
  .article-body h2 { font-size: 21px; }
  .cta-band h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .header-actions .btn-primary { display: none; }
  .article-section { padding-bottom: 56px; }
  .related-section { padding: 56px 0; }
  .section-heading h2 { font-size: 24px; }
  .article-meta { gap: 12px 16px; }
  .article-header h1 { font-size: 22px; letter-spacing: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-band { padding: 56px 0; }
  .cta-band { padding: 56px 0; }
  .cta-band h2 { font-size: 22px; }
}

/* roulang page: category2 */
:root {
  --primary: #0F3D33;
  --primary-dark: #092622;
  --primary-light: #E4EFEA;
  --accent: #C9924D;
  --cta: #DDA64A;
  --accent-dark: #A9742F;
  --bg: #F5F1E8;
  --card-bg: #FFFFFF;
  --bg-secondary: #EFE9DC;
  --text-main: #1F1E1A;
  --text-secondary: #6D6B62;
  --text-muted: #9A968C;
  --border: #E5DCC8;
  --divider: #EDE5D4;
  --success: #2F7D5C;
  --danger: #BC3E2B;
  --warning: #B7791F;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(15,61,51,0.08);
  --shadow-hover: 0 8px 24px rgba(15,61,51,0.16);
  --spacer: 96px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease; }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; outline: none; }

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

.section { padding: 80px 0; }
.section-alt { background: var(--bg-secondary); }

.section-head { margin-bottom: 48px; }
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  position: relative;
  padding-left: 16px;
}
.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}
.section-head p { margin-top: 12px; color: var(--text-secondary); font-size: 14px; max-width: 640px; }
.section-head.center { text-align: center; }
.section-head.center h2 { padding-left: 0; }
.section-head.center h2::before { display: none; }
.section-head.center p { margin-left: auto; margin-right: auto; }

/* ==== Header / Nav ==== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--border);
  height: 72px;
  display: flex;
  align-items: center;
  backdrop-filter: blur(6px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo a { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 36px; height: 36px;
  background: var(--primary);
  color: var(--cta);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 13px;
  letter-spacing: .5px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text strong { font-size: 18px; color: var(--primary); letter-spacing: .5px; }
.logo-text small { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }

.main-nav { margin-left: 32px; }
.main-nav ul { display: flex; gap: 4px; }
.main-nav li a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: color .2s, background .2s;
}
.main-nav li a:hover { color: var(--primary); background: var(--primary-light); }
.main-nav li.active a { color: var(--primary); font-weight: 700; position: relative; }
.main-nav li.active a::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.btn-login { font-size: 13px; color: var(--text-secondary); padding: 8px 12px; font-weight: 500; }
.btn-login:hover { color: var(--primary); }
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--cta);
  color: #1F1E1A;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all .2s ease;
}
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); color: #1F1E1A; }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 8px;
  border: 1px solid var(--primary);
  cursor: pointer;
  transition: all .2s ease;
}
.btn-secondary:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-1px); }
.btn-secondary:active { transform: translateY(0); }

/* ==== Page Hero ==== */
.page-hero {
  background: var(--bg-secondary);
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--divider);
}
.breadcrumb { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 6px; color: var(--text-muted); }
.breadcrumb .current { color: var(--text-secondary); }
.page-hero h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}
.page-hero h1 .brand { color: var(--primary); }
.page-hero .hero-sub { font-size: 15px; color: var(--text-secondary); max-width: 720px; line-height: 1.8; }

/* ==== Intro Section ==== */
.intro-grid { display: flex; gap: 56px; align-items: flex-start; flex-wrap: wrap; }
.intro-text { flex: 1 1 46%; min-width: 300px; }
.intro-text p { margin-bottom: 18px; font-size: 15px; line-height: 1.8; color: var(--text-main); }
.intro-text p:last-child { margin-bottom: 0; }
.intro-text .lead { font-size: 16px; font-weight: 600; color: var(--primary); }
.intro-image { flex: 1 1 46%; min-width: 300px; }
.intro-image img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: auto; }
.intro-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.intro-badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 999px;
  font-weight: 500;
}
.intro-badges i { font-size: 12px; color: var(--accent); }

/* ==== Cards ==== */
.card-b {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all .25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card-b:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}
.card-b .card-icon {
  width: 56px; height: 56px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 22px;
  transition: background .2s;
}
.card-b:hover .card-icon { background: #C4DBD2; }
.card-b h3 { font-size: 17px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.card-b p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; flex-grow: 1; }
.card-b .card-link { margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.card-b .card-link i { transition: transform .2s; }
.card-b:hover .card-link i { transform: translateX(4px); }

/* ==== Alternate Block ==== */
.alternate-row {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 32px 0;
}
.alternate-row + .alternate-row {
  border-top: 1px solid var(--divider);
  margin-top: 32px;
}
.alternate-row .alt-img { flex: 1 1 46%; min-width: 280px; }
.alternate-row .alt-img img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: auto; }
.alternate-row .alt-text { flex: 1 1 46%; min-width: 280px; }
.alternate-row .alt-tag {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: .5px;
}
.alternate-row .alt-text h3 { font-size: 24px; font-weight: 700; color: var(--text-main); margin-bottom: 12px; line-height: 1.4; }
.alternate-row .alt-text p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.alternate-row .alt-text .alt-link { font-size: 14px; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.alternate-row .alt-text .alt-link:hover { color: var(--accent-dark); }
.alternate-row .alt-text .alt-link i { transition: transform .2s; }
.alternate-row .alt-text .alt-link:hover i { transform: translateX(4px); }
.alternate-row.rev .alt-img { order: 2; }
.alternate-row.rev .alt-text { order: 1; }

/* ==== FAQ ==== */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s;
}
.faq-item[open] { border-color: var(--accent); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  position: relative;
  padding-right: 48px;
  transition: background .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: #FAF7F0; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 400;
  color: var(--accent);
  transition: transform .25s, content .25s;
}
.faq-item[open] summary::after { content: '×'; color: var(--accent-dark); }
.faq-item .faq-body { padding: 0 20px 18px; }
.faq-item .faq-body p { font-size: 14px; line-height: 1.8; color: var(--text-secondary); }

/* ==== CTA Block ==== */
.cta-area { padding: 60px 0; }
.cta-box {
  background: var(--primary-dark);
  border-radius: 16px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.cta-box h2 { font-size: 30px; font-weight: 800; color: #fff; margin-bottom: 12px; position: relative; }
.cta-box p { font-size: 14px; color: rgba(255,255,255,.7); max-width: 520px; margin: 0 auto 28px; position: relative; }
.cta-box .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-box .btn-cta {
  background: var(--cta);
  color: #1F1E1A;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all .2s ease;
}
.cta-box .btn-cta:hover { background: var(--accent); transform: translateY(-1px); color: #1F1E1A; box-shadow: 0 4px 16px rgba(221,166,74,.3); }
.cta-box .btn-ghost {
  background: transparent;
  color: rgba(255,255,255,.85);
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.25);
  transition: all .2s ease;
}
.cta-box .btn-ghost:hover { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.4); }

/* ==== Back Home ==== */
.back-home {
  text-align: center;
  padding: 32px 0 56px;
}
.back-home a {
  font-size: 13px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .2s;
}
.back-home a:hover { color: var(--accent); }

/* ==== Footer ==== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.7);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,.55); }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a {
  width: 34px; height: 34px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  transition: all .2s ease;
}
.footer-social a:hover { background: rgba(255,255,255,.1); color: var(--cta); border-color: var(--cta); }
.footer-col h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,.55); transition: color .2s; }
.footer-col ul li a:hover { color: var(--cta); }
.footer-contact li { font-size: 13px; color: rgba(255,255,255,.55); display: flex; align-items: center; gap: 8px; }
.footer-contact li i { color: var(--cta); font-size: 13px; width: 16px; text-align: center; }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 12px; color: rgba(255,255,255,.35); }

/* ==== Focus States ==== */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ==== Responsive 1024px ==== */
@media (max-width: 1024px) {
  .main-nav { margin-left: 16px; }
  .main-nav li a { padding: 8px 10px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; }
  .alternate-row { gap: 32px; }
}

/* ==== Responsive 768px ==== */
@media (max-width: 768px) {
  .site-header { height: auto; padding: 12px 0; }
  .header-inner { flex-wrap: wrap; }
  .header-actions { display: none; }
  .main-nav { order: 3; width: 100%; margin: 10px 0 0; overflow-x: auto; }
  .main-nav ul { display: flex; gap: 0; white-space: nowrap; padding-bottom: 4px; }
  .main-nav li a { padding: 6px 12px; }
  .main-nav li.active a::after { left: 12px; right: 12px; }

  .section { padding: 56px 0; }
  .page-hero { padding: 36px 0 32px; }
  .page-hero h1 { font-size: 28px; }
  .section-head h2 { font-size: 24px; }

  .alternate-row, .alternate-row.rev { flex-direction: column; gap: 24px; }
  .alternate-row .alt-img { order: 1 !important; }
  .alternate-row .alt-text { order: 2 !important; }

  .cta-box { padding: 36px 24px; }
  .cta-box h2 { font-size: 24px; }
  .cta-box .cta-buttons { flex-direction: column; align-items: center; }

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

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-box h2 { font-size: 20px; }
  .cta-box .btn-cta, .cta-box .btn-ghost { width: 100%; }
  .intro-grid { flex-direction: column; gap: 24px; }
  .section-head h2 { font-size: 21px; }
}

/* roulang page: category3 */
:root{
  --primary:#0F3D33;
  --primary-dark:#092622;
  --primary-soft:#E4EFEA;
  --accent:#C9924D;
  --cta:#DDA64A;
  --accent-dark:#A9742F;
  --bg:#F5F1E8;
  --card-bg:#FFFFFF;
  --bg-alt:#EFE9DC;
  --text-main:#1F1E1A;
  --text-sub:#6D6B62;
  --text-muted:#9A968C;
  --border:#E5DCC8;
  --divider:#EDE5D4;
  --success:#2F7D5C;
  --danger:#BC3E2B;
  --warn:#B7791F;
  --radius-lg:12px;
  --radius-md:8px;
  --radius-pill:999px;
  --shadow-sm:0 2px 8px rgba(15,61,51,.08);
  --shadow-md:0 6px 20px rgba(15,61,51,.12);
  --shadow-lg:0 12px 32px rgba(15,61,51,.18);
  --font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg);
  color:var(--text-main);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
.container{
  max-width:1200px;
  width:100%;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:var(--card-bg)}
.text-center{text-align:center}

/* Header */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(8px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:72px;gap:20px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:8px;
  background:var(--primary);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:18px;font-weight:800;color:var(--primary);letter-spacing:1px}
.logo-text small{font-size:11px;color:var(--text-muted);letter-spacing:2px}
.main-nav{display:flex;align-items:center;gap:2px}
.main-nav ul{display:flex;gap:4px}
.main-nav li a{
  display:block;padding:8px 16px;font-size:15px;font-weight:500;
  color:var(--text-sub);border-radius:var(--radius-md);
  transition:all .2s ease;border-bottom:2px solid transparent;
}
.main-nav li a:hover{
  color:var(--primary);background:var(--primary-soft);
}
.main-nav li.active a{
  color:var(--primary);font-weight:700;
  border-bottom-color:var(--accent);
  background:transparent;
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-login{
  font-size:13px;color:var(--text-sub);font-weight:600;
  padding:6px 12px;border-radius:var(--radius-md);
  transition:all .2s;
}
.btn-login:hover{color:var(--primary);background:var(--primary-soft)}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--cta);color:#1F1E1A;
  font-size:14px;font-weight:700;padding:10px 22px;
  border-radius:var(--radius-md);border:1px solid transparent;
  cursor:pointer;transition:all .25s ease;gap:6px;
}
.btn-primary:hover{
  background:var(--accent);transform:translateY(-1px);
  box-shadow:0 4px 12px rgba(201,146,77,.3);
}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-secondary{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:var(--primary);
  font-size:14px;font-weight:600;padding:10px 22px;
  border-radius:var(--radius-md);border:1.5px solid var(--primary);
  cursor:pointer;transition:all .25s ease;gap:6px;
}
.btn-secondary:hover{
  background:rgba(15,61,51,.08);transform:translateY(-1px);
}
.btn-secondary:active{transform:translateY(0)}
.btn-secondary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35);
  font-size:14px;font-weight:600;padding:10px 22px;border-radius:var(--radius-md);
  cursor:pointer;transition:all .25s ease;
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}
.btn-ghost:focus-visible{outline:2px solid var(--cta);outline-offset:3px}
.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;
  width:42px;height:42px;border-radius:var(--radius-md);
  align-items:center;justify-content:center;font-size:20px;
  color:var(--primary);transition:background .2s;
}
.nav-toggle:hover{background:var(--primary-soft)}

/* Mini Hero */
.mini-hero{
  background:var(--bg-alt);
  padding:64px 0 48px;
  border-bottom:1px solid var(--divider);
  position:relative;
  overflow:hidden;
}
.mini-hero::before{
  content:"";position:absolute;top:-60px;right:-60px;
  width:220px;height:220px;border-radius:50%;
  background:rgba(201,146,77,.08);
}
.mini-hero::after{
  content:"";position:absolute;bottom:-30px;left:8%;
  width:80px;height:80px;border-radius:50%;
  background:rgba(15,61,51,.06);
}
.mini-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);margin-bottom:16px;
}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:10px;color:var(--text-muted)}
.mini-hero h1{
  font-size:38px;line-height:1.3;font-weight:800;color:var(--primary);
  letter-spacing:.5px;margin-bottom:12px;
}
.mini-hero p{
  font-size:14px;color:var(--text-sub);max-width:560px;
}
.mini-hero .hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:18px;background:rgba(15,61,51,.06);
  border:1px solid rgba(15,61,51,.1);
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:12px;color:var(--primary);font-weight:600;
}

/* Intro Text */
.intro-section{padding:96px 0 40px}
.intro-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;
}
.intro-text p{
  font-size:15px;line-height:1.85;color:var(--text-sub);
  margin-bottom:20px;
}
.intro-text p strong{color:var(--primary)}
.intro-points{
  display:flex;flex-direction:column;gap:16px;
}
.intro-point{
  display:flex;align-items:flex-start;gap:14px;
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:20px;
  transition:all .25s ease;
}
.intro-point:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-md);
  border-color:var(--accent);
}
.intro-point i{
  font-size:18px;color:var(--accent);margin-top:2px;
  width:32px;height:32px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);border-radius:8px;
}
.intro-point h4{font-size:15px;font-weight:700;color:var(--primary);margin-bottom:4px}
.intro-point p{font-size:13px;color:var(--text-sub);line-height:1.6;margin-bottom:0}

/* Feature image */
.feature-img{
  border-radius:var(--radius-lg);
  overflow:hidden;margin:40px 0;
  box-shadow:var(--shadow-md);position:relative;
}
.feature-img img{width:100%;height:auto;object-fit:cover;aspect-ratio:16/9}
.feature-img .img-caption{
  position:absolute;bottom:0;left:0;right:0;
  padding:30px 24px 20px;
  background:linear-gradient(to top,rgba(9,38,34,.8),transparent);
  color:#fff;font-size:13px;
}
.feature-img .img-caption span{
  background:var(--accent);color:#fff;
  padding:3px 12px;border-radius:var(--radius-pill);
  font-size:11px;font-weight:700;letter-spacing:1px;
}

/* Content Cards */
.cards-section{padding:64px 0 96px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin-bottom:40px;gap:24px;
}
.section-head.left h2{
  font-size:28px;font-weight:800;color:var(--primary);
  position:relative;padding-left:18px;line-height:1.3;
}
.section-head.left h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;
  width:4px;background:var(--accent);border-radius:4px;
}
.section-head.left p{
  font-size:14px;color:var(--text-sub);margin-top:8px;
  max-width:480px;
}
.content-cards{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.content-card{
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:all .3s ease;display:flex;flex-direction:column;
}
.content-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);
  border-color:var(--accent);
}
.content-card .card-img-wrap{
  position:relative;overflow:hidden;
}
.content-card .card-img-wrap img{
  width:100%;height:190px;object-fit:cover;transition:transform .4s ease;
}
.content-card:hover .card-img-wrap img{transform:scale(1.04)}
.content-card .card-tag{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(201,146,77,.92);color:#fff;
  font-size:12px;font-weight:600;padding:3px 12px;
  border-radius:var(--radius-pill);
}
.content-card .card-body{padding:20px 20px 24px;display:flex;flex-direction:column;flex:1}
.content-card .card-body h3{
  font-size:17px;font-weight:700;color:var(--primary);
  margin-bottom:8px;line-height:1.4;
}
.content-card .card-body p{
  font-size:13px;color:var(--text-sub);line-height:1.7;
  margin-bottom:16px;flex:1;
}
.content-card .card-link{
  font-size:13px;font-weight:600;color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;
  transition:gap .2s;
}
.content-card .card-link:hover{color:var(--accent-dark);gap:10px}
.content-card .card-link i{font-size:12px}

/* Alternating image text */
.alt-section{padding:64px 0 96px;background:var(--card-bg)}
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  margin-bottom:80px;
}
.alt-row:last-child{margin-bottom:0}
.alt-row.reversed .alt-img{order:2}
.alt-img{
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-md);position:relative;
}
.alt-img img{width:100%;height:300px;object-fit:cover;display:block}
.alt-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,61,51,.1),transparent 60%);
  pointer-events:none;
}
.alt-content{}
.alt-content .alt-badge{
  display:inline-block;font-size:12px;font-weight:700;
  color:var(--accent);background:rgba(201,146,77,.1);
  padding:4px 14px;border-radius:var(--radius-pill);
  letter-spacing:1px;margin-bottom:14px;
}
.alt-content h3{
  font-size:24px;font-weight:800;color:var(--primary);
  line-height:1.35;margin-bottom:14px;
}
.alt-content p{
  font-size:14px;color:var(--text-sub);line-height:1.8;
  margin-bottom:20px;
}
.alt-content a.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--accent);
  transition:color .2s,gap .2s;
}
.alt-content a.link-more:hover{color:var(--accent-dark);gap:10px}

/* FAQ */
.faq-section{padding:96px 0;background:var(--bg-alt)}
.faq-layout{
  display:grid;grid-template-columns:4fr 8fr;gap:48px;
}
.faq-title h2{
  font-size:28px;font-weight:800;color:var(--primary);
  position:relative;padding-left:18px;line-height:1.3;margin-bottom:14px;
}
.faq-title h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;
  width:4px;background:var(--accent);border-radius:4px;
}
.faq-title p{font-size:14px;color:var(--text-sub);margin-bottom:20px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:10px;overflow:hidden;transition:all .25s ease;
}
.faq-item.open{
  border-color:var(--accent);
  box-shadow:var(--shadow-sm);
}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:18px 22px;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--text-main);
  transition:color .2s;user-select:none;
}
.faq-q:hover{color:var(--primary)}
.faq-q .faq-icon{
  font-size:16px;color:var(--accent);flex-shrink:0;
  transition:transform .3s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s ease;
}
.faq-a-inner{padding:0 22px 20px;font-size:14px;color:var(--text-sub);line-height:1.8}

/* CTA */
.cta-section{
  padding:64px 0;
  background:var(--primary-dark);position:relative;overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:40px;position:relative;z-index:2;flex-wrap:wrap;
}
.cta-inner h2{
  font-size:26px;font-weight:800;color:#fff;margin-bottom:8px;
}
.cta-inner p{
  font-size:14px;color:rgba(255,255,255,.7);max-width:460px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* Back link */
.back-home{
  text-align:center;padding:32px 0 48px;background:var(--primary-dark);
  position:relative;z-index:2;
}
.back-home a{
  font-size:13px;color:rgba(255,255,255,.6);
  display:inline-flex;align-items:center;gap:6px;
  transition:color .2s,gap .2s;
}
.back-home a:hover{color:var(--cta);gap:10px}
.back-home a i{font-size:12px}

/* Footer */
.site-footer{
  background:var(--primary-dark);color:rgba(255,255,255,.75);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand p{
  font-size:13px;color:rgba(255,255,255,.55);
  line-height:1.8;margin:16px 0 20px;
}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.2);
  display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);font-size:14px;
  transition:all .25s;
}
.footer-social a:hover{
  background:var(--accent);border-color:var(--accent);color:#fff;
}
.footer-col h4{
  font-size:14px;color:#fff;font-weight:700;
  margin-bottom:20px;letter-spacing:1px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul li a{
  font-size:13px;color:rgba(255,255,255,.55);
  transition:color .2s,padding-left .2s;
}
.footer-col ul li a:hover{color:var(--accent);padding-left:4px}
.footer-contact li{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-contact i{color:var(--accent);font-size:14px;width:16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.15);
  padding:20px 0;text-align:center;
  font-size:13px;color:rgba(255,255,255,.4);
}

/* Mobile Menu */
.mobile-menu{
  display:none;
  background:var(--card-bg);
  border-top:1px solid var(--border);
  padding:16px 0;
}
.mobile-menu ul{display:flex;flex-direction:column;gap:4px}
.mobile-menu li a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;border-radius:var(--radius-md);
  font-size:15px;color:var(--text-sub);font-weight:600;
  transition:all .2s;
}
.mobile-menu li a:hover{background:var(--primary-soft);color:var(--primary)}
.mobile-menu li.active a{background:var(--primary-soft);color:var(--primary)}
.mobile-menu li a i{font-size:11px;color:var(--text-muted)}
.mobile-menu .mm-actions{padding:16px 16px 8px;display:flex;gap:10px;flex-wrap:wrap}
.mobile-menu .mm-actions .btn-primary,.mobile-menu .mm-actions .btn-login{flex:1;text-align:center}

/* Reveal animation */
.reveal{
  opacity:0;transform:translateY(20px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Responsible */
@media screen and (max-width:1024px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .header-nav{display:none}
  .header-actions .btn-login{display:none}
  .nav-toggle{display:flex}
  .mobile-menu.active{display:block}
  .intro-grid{grid-template-columns:1fr;gap:24px}
  .content-cards{grid-template-columns:repeat(2,1fr);gap:20px}
  .alt-row{grid-template-columns:1fr;gap:32px;margin-bottom:56px}
  .alt-row.reversed .alt-img{order:1}
  .alt-row.reversed .alt-content{order:2}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:640px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .mini-hero{padding:48px 0 36px}
  .mini-hero h1{font-size:28px}
  .breadcrumb{font-size:12px}
  .logo-text strong{font-size:16px}
  .header-actions .btn-primary{display:none}
  .header-actions{display:flex}
  .content-cards{grid-template-columns:1fr;gap:16px}
  .section-head{flex-direction:column;align-items:flex-start}
  .section-head.left h2{font-size:24px}
  .alt-img img{height:220px}
  .alt-content h3{font-size:20px}
  .faq-section{padding:56px 0}
  .faq-title h2{font-size:24px}
  .faq-q{font-size:14px;padding:16px}
  .faq-a-inner{font-size:13px;padding:0 16px 16px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:20px}
  .cta-inner h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col h4{margin-bottom:14px}
  .intro-section{padding:64px 0 24px}
}
@media screen and (min-width:1025px){
  .mobile-menu{display:none !important}
}