/* roulang page: index */
:root{
  --bg:#F4F8FA;
  --card:#FFFFFF;
  --primary:#1D7B8E;
  --primary-dark:#155E6D;
  --primary-light:#E5F2F5;
  --secondary:#216869;
  --secondary-light:#E1EEEE;
  --accent:#E0894B;
  --text:#1B2A32;
  --muted:#5D7180;
  --border:rgba(29,123,142,.14);
  --divider:#E5EBEF;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow:0 14px 34px rgba(29,123,142,.08),0 3px 8px rgba(21,62,77,.04);
  --shadow-hover:0 18px 44px rgba(29,123,142,.14),0 6px 16px rgba(21,62,77,.06);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",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);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit}
ul,ol{list-style:none}
.grid-container{max-width:1280px}
:focus-visible{outline:3px solid rgba(29,123,142,.4);outline-offset:2px;border-radius:4px}

/* 通用标题与区块 */
.block{padding-block:clamp(72px,8vw,120px)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-kicker{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;background:var(--primary-light);color:var(--primary-dark);border-radius:999px;font-size:.875rem;font-weight:600;letter-spacing:.02em;margin-bottom:14px}
.section-title{font-size:clamp(1.6rem,2.8vw,2.4rem);line-height:1.25;font-weight:700;color:var(--text);letter-spacing:-.02em}
.section-sub{color:var(--muted);max-width:340px;font-size:.95rem}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;background:var(--primary-light);color:var(--primary-dark);border-radius:999px;font-weight:600;font-size:.875rem;letter-spacing:.02em}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 26px;border-radius:999px;border:0;font-weight:600;font-size:.98rem;cursor:pointer;transition:background .25s ease,box-shadow .25s ease,transform .2s ease,color .2s ease;text-align:center}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px rgba(29,123,142,.22)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 12px 28px rgba(21,94,109,.28);transform:translateY(-1px)}
.btn-light{border:1px solid rgba(29,123,142,.28);background:#fff;color:var(--primary-dark)}
.btn-light:hover{border-color:var(--primary);background:var(--primary-light)}
.btn-block{width:100%}

/* 头部导航 */
.site-header{padding-top:20px;position:relative;z-index:120}
.header-inner{max-width:1280px;margin:0 auto;padding:0 20px}
.nav-panel{display:flex;align-items:center;gap:10px;background:#fff;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.7);border-radius:16px;padding:10px 18px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:12px;margin-right:8px;flex-shrink:0}
.brand-icon{width:42px;height:42px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary);border-radius:12px;font-size:1.2rem}
.brand-text{font-size:1.15rem;font-weight:700;color:var(--primary-dark);white-space:nowrap;letter-spacing:.01em}
.site-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;flex:1;justify-content:center;padding:0 8px}
.nav-item{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;font-size:.925rem;font-weight:500;color:var(--primary-dark);position:relative;transition:background .2s ease,color .2s ease}
.nav-item i{font-size:.85rem;color:var(--primary);opacity:.8}
.nav-item:hover{background:var(--primary-light)}
.nav-item.active{background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(29,123,142,.18)}
.nav-item.active i{color:#fff;opacity:1}
.nav-cta{margin-left:auto;flex-shrink:0}
.nav-toggle{display:none;width:48px;height:44px;border:1px solid var(--border);background:#fff;border-radius:999px;color:var(--primary-dark);font-size:1.1rem;cursor:pointer;align-items:center;justify-content:center;margin-left:auto}

/* Hero */
.hero{position:relative;padding-block:clamp(60px,7vw,96px);min-height:680px;display:flex;align-items:center;margin-top:12px}
.hero-bg{position:absolute;inset:0;z-index:0;background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;opacity:.15}
.hero-overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(244,248,250,.92) 0%,rgba(244,248,250,.98) 100%)}
.hero .grid-container{position:relative;z-index:2}
.hero-content{padding-right:24px}
.hero h1{font-size:clamp(2rem,4.5vw,3.5rem);line-height:1.15;font-weight:700;margin:22px 0 22px;color:var(--text);letter-spacing:-.025em}
.hero h1 span{color:var(--primary)}
.hero-desc{font-size:1.09rem;line-height:1.9;color:var(--muted);max-width:560px;margin-bottom:30px}
.hero-buttons{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-trust{display:flex;gap:14px;flex-wrap:wrap;padding:0}
.hero-trust li{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--border);padding:7px 14px;border-radius:999px;font-size:.82rem;color:var(--muted)}
.hero-trust i{color:var(--secondary)}
.hero-visual{margin-left:auto}
.console-card{background:rgba(255,255,255,.96);border:1px solid rgba(29,123,142,.1);box-shadow:var(--shadow);border-radius:var(--radius-lg);padding:28px;backdrop-filter:blur(6px)}
.console-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--divider)}
.console-head h3{margin:0;font-size:1.08rem;color:var(--primary-dark);font-weight:700}
.console-status{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;background:var(--secondary-light);color:var(--secondary);font-size:.8rem;font-weight:600}
.signal-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px dashed #DDE7EB}
.signal-row:last-child{border-bottom:0}
.signal-label{color:var(--muted);font-size:.9rem}
.signal-value{color:var(--text);font-weight:600;font-size:.9rem}
.signal-value.good{color:var(--secondary)}
.signal-value.open{color:var(--primary)}
.mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.mini-item{background:var(--primary-light);border-radius:16px;padding:14px 12px;text-align:center}
.mini-item i{color:var(--primary);font-size:1.1rem;margin-bottom:8px}
.mini-item b{display:block;font-size:.86rem;color:var(--primary-dark);font-weight:600}
.mini-item span{font-size:.74rem;color:var(--muted)}
.entry-icon{width:46px;height:46px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary-dark);border-radius:14px;font-size:1.15rem}
.index-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid rgba(29,123,142,.07);padding:32px;height:100%;transition:transform .25s ease,box-shadow .25s ease}
.index-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}

/* 指标看板 */
.metrics-zone{position:relative;z-index:5;margin-top:-40px}
.metric-card{background:#fff;border:1px solid rgba(29,123,142,.1);border-radius:var(--radius-md);box-shadow:var(--shadow);padding:24px;display:flex;flex-direction:column;gap:6px;height:100%;transition:transform .25s ease,box-shadow .25s ease}
.metric-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.metric-top{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:.84rem;font-weight:500}
.metric-top i{color:var(--accent);font-size:.85rem}
.metric-trend{color:var(--secondary);font-size:.78rem;background:var(--secondary-light);padding:3px 9px;border-radius:999px}
.metric-num{font-size:clamp(2rem,3.5vw,3rem);line-height:1.1;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.metric-unit{font-size:1rem;color:var(--muted);font-weight:500;margin-left:2px}
.metric-label{color:var(--muted);font-size:.92rem}

/* 服务矩阵 */
.services-section{padding-top:clamp(72px,8vw,120px)}
.service-primary{background:linear-gradient(135deg,var(--primary) 0%,#155E6D 100%);color:#fff;border-radius:var(--radius-lg);padding:0;overflow:hidden;position:relative;transition:transform .25s ease,box-shadow .25s ease;height:100%;box-shadow:var(--shadow)}
.service-primary:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.service-main-body{padding:34px 34px 26px}
.service-main-body .service-icon{width:54px;height:54px;background:rgba(255,255,255,.16);color:#fff;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.5rem}
.service-main-body h3{font-size:1.55rem;font-weight:700;margin-bottom:12px;color:#fff}
.service-main-body p{color:rgba(255,255,255,.88);max-width:540px;line-height:1.85;font-size:1rem}
.service-cover{height:150px;background:url("/assets/images/coverpic/cover-1.png") center/cover no-repeat;border-top:1px solid rgba(255,255,255,.2)}
.service-ranking{display:inline-flex;align-items:center;gap:8px;margin-top:20px;color:rgba(255,255,255,.85);background:rgba(255,255,255,.15);padding:6px 14px;border-radius:999px;font-size:.8rem}
.service-card{background:#fff;border:1px solid rgba(29,123,142,.1);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:28px;height:100%;display:flex;flex-direction:column;position:relative;transition:transform .25s ease,box-shadow .25s ease}
.service-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.service-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary-dark);border-radius:14px;margin-bottom:18px;font-size:1.3rem}
.service-card h3{font-size:1.22rem;font-weight:700;color:var(--text);margin-bottom:12px;line-height:1.4}
.service-card p{color:var(--muted);font-size:.92rem;line-height:1.8;flex:1}
.service-more{display:inline-flex;align-items:center;gap:7px;margin-top:18px;color:var(--primary);font-weight:600;font-size:.92rem}
.service-more i{transition:transform .22s ease}
.service-more:hover i{transform:translateX(4px)}
.sec-light-card{background:var(--primary-light);border:none;box-shadow:none}

/* 内容资讯 */
.info-zone{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:clamp(24px,3.2vw,44px);border:1px solid rgba(29,123,142,.06)}
.info-main .info-title-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}
.info-title-row .section-title{font-size:clamp(1.35rem,2vw,1.7rem)}
.info-list-item{display:flex;gap:18px;padding:22px 6px;border-bottom:1px solid #EDF1F4;transition:background .2s ease;border-radius:12px}
.info-list-item:last-child{border-bottom:0}
.info-list-item:hover{background:var(--primary-light);padding-left:14px;padding-right:14px}
.info-date{width:54px;flex-shrink:0;color:var(--muted);font-size:.8rem;text-align:center;background:#F8FAFB;border-radius:12px;padding:8px 0;height:58px;display:flex;flex-direction:column;justify-content:center}
.info-date b{font-size:1.05rem;color:var(--primary-dark);font-weight:700;line-height:1}
.info-date span{font-size:.72rem;margin-top:4px;color:var(--muted)}
.info-list-main{flex:1;min-width:0}
.info-list-main h3{font-size:1.05rem;font-weight:600;color:var(--text);margin-bottom:6px;line-height:1.5}
.info-list-main p{color:var(--muted);font-size:.88rem;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-arrow{display:flex;align-items:center;color:#B7C6CC;font-size:1.05rem;flex-shrink:0;transition:color .2s ease,transform .2s ease}
.info-list-item:hover .info-arrow{color:var(--primary);transform:translateX(4px)}
.info-tag{display:inline-flex;padding:4px 12px;background:var(--secondary-light);color:var(--secondary);border-radius:999px;font-size:.76rem;font-weight:600;width:max-content;margin-bottom:8px}
.empty-info{background:var(--primary-light);border-radius:var(--radius-md);padding:36px 24px;display:flex;align-items:center;justify-content:center;gap:14px;color:var(--muted)}
.aside-panel{height:100%;border-radius:var(--radius-md);background:#F8FAFB;border:1px solid var(--divider);padding:26px}
.aside-panel h3{font-size:1.06rem;font-weight:700;color:var(--text);margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--divider)}
.aside-list{display:flex;flex-direction:column;gap:14px}
.aside-list li{position:relative;padding-left:18px;color:var(--muted);font-size:.91rem}
.aside-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;background:var(--primary);border-radius:99px}
.aside-list li b{color:var(--text);font-weight:600}
.hot-tag-box{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.hot-tag{background:#fff;border:1px solid var(--border);color:var(--muted);font-size:.8rem;padding:6px 14px;border-radius:999px;transition:background .2s ease,color .2s ease,border-color .2s ease}
.hot-tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.side-card{background:#fff;border-radius:var(--radius-md);border:1px solid var(--border);padding:18px;margin-top:16px}
.side-card .side-title{font-weight:600;color:var(--text);font-size:.92rem;margin-bottom:8px}
.side-card .side-note{color:var(--muted);font-size:.82rem;line-height:1.7}

/* 对比 */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow);padding:32px;border:1px solid rgba(29,123,142,.08)}
.compare-card.new{background:var(--primary-light);border-top:5px solid var(--primary);box-shadow:none;padding:32px}
.compare-title{display:inline-flex;align-items:center;gap:8px;font-size:1rem;font-weight:600;padding:5px 14px;background:#F0F4F6;border-radius:999px;color:var(--muted);margin-bottom:26px}
.compare-card.new .compare-title{background:#fff;color:var(--primary-dark)}
.compare-list{display:flex;flex-direction:column;gap:16px}
.compare-list li{position:relative;padding-left:34px;color:var(--muted);line-height:1.7}
.compare-list li .cmp-icon{position:absolute;left:0;top:2px;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem}
.compare-list li.old .cmp-icon{background:#E9EDEF;color:#99A9B2}
.compare-list li.old del{color:#A5B2B8;text-decoration:line-through}
.compare-list li.new{color:var(--text)}
.compare-list li.new .cmp-icon{background:var(--secondary);color:#fff}
.compare-card.new .cta-link{display:inline-flex;align-items:center;gap:8px;margin-top:24px;font-weight:600;color:var(--primary-dark)}
.compare-card.new .cta-link i{transition:transform .2s ease}
.compare-card.new .cta-link:hover i{transform:translateX(4px)}

/* FAQ */
.faq-zone{background:var(--primary-light);border-radius:var(--radius-lg);padding:clamp(24px,4vw,50px)}
.faq-left .section-kicker{background:#fff}
.faq-intro{color:var(--muted);max-width:360px;margin-top:16px}
.faq-help{display:inline-flex;align-items:center;gap:8px;margin-top:22px;background:#fff;padding:10px 18px;border-radius:999px;color:var(--primary-dark);font-size:.9rem;font-weight:600}
.faq-item{border-radius:var(--radius-md);background:#fff;box-shadow:0 6px 16px rgba(29,123,142,.05);margin-bottom:12px;padding:0;transition:box-shadow .2s ease,border-color .2s ease;border:1px solid transparent}
.faq-item:hover{border-color:var(--border)}
.faq-item:last-child{margin-bottom:0}
.faq-item .accordion-title{font-size:1.03rem;color:var(--text);font-weight:600;padding:20px 22px;display:flex;justify-content:space-between;align-items:center;gap:14px;border-radius:var(--radius-md);line-height:1.5}
.faq-item .accordion-title:focus-visible{outline:3px solid rgba(29,123,142,.4)}
.faq-item .accordion-title i{margin-left:auto;color:var(--primary);transition:transform .25s ease;font-size:.9rem;width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);border-radius:50%}
.faq-item.is-active .accordion-title i{transform:rotate(45deg)}
.faq-item .accordion-content{border-top:1px solid var(--divider);padding:2px 22px 22px;color:var(--muted);font-size:.95rem;line-height:1.85}

/* CTA 表单 */
.cta-section{position:relative;overflow:hidden}
.cta-bg{position:absolute;inset:-60px 0;background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;opacity:.1;z-index:0}
.cta-section .grid-container{position:relative;z-index:1}
.cta-card-left{background:var(--primary-dark);color:#fff;border-radius:var(--radius-lg);padding:38px;height:100%;display:flex;flex-direction:column;justify-content:center;box-shadow:var(--shadow)}
.cta-card-left h2{font-size:clamp(1.55rem,2.8vw,2.2rem);color:#fff;line-height:1.3;margin-bottom:18px}
.cta-card-left p{color:rgba(255,255,255,.85);line-height:1.9;font-size:.98rem}
.contact-detail{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.contact-detail li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.9);font-size:.9rem}
.contact-detail i{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,.12);color:#fff}
.form-card{background:#fff;box-shadow:var(--shadow);border-radius:var(--radius-lg);padding:clamp(24px,3vw,40px);border:1px solid rgba(29,123,142,.08)}
.form-title{font-size:1.5rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.form-note{color:var(--muted);font-size:.9rem;margin-bottom:28px}
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:.86rem;color:var(--text);font-weight:600;margin-bottom:7px}
.form-field input,.form-field select,.form-field textarea{width:100%;min-height:44px;border:1px solid #C9D8DE;background:#fff;border-radius:var(--radius-sm);padding:10px 14px;color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;font-size:.95rem}
.form-field textarea{min-height:100px;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,123,142,.12)}
.privacy-line{margin-top:14px;color:var(--muted);font-size:.76rem;line-height:1.7;text-align:center}

/* Footer */
.site-footer{background:#EEF3F6;border-top:1px solid var(--divider);padding-top:64px;margin-top:clamp(40px,6vw,80px)}
.footer-grid{padding-bottom:48px}
.footer-brand .brand-text{font-size:1.2rem}
.footer-about{color:var(--muted);font-size:.9rem;margin-top:16px;line-height:1.85;max-width:320px}
.footer-title{font-size:1rem;font-weight:700;color:var(--text);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{color:var(--muted);font-size:.9rem}
.footer-links a:hover{color:var(--primary-dark)}
.footer-contact-card{background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow);padding:18px;font-size:.83rem;color:var(--muted)}
.footer-contact-card p{display:flex;gap:10px;align-items:flex-start;margin-bottom:8px}
.footer-contact-card i{color:var(--primary);margin-top:3px}
.footer-bottom{border-top:1px solid var(--divider);padding:18px 0 22px;color:var(--muted);font-size:.8rem;text-align:center}

/* 响应式 */
@media screen and (max-width:1024px){
  .nav-panel{padding:8px 14px}
  .hero{min-height:auto;padding-block:56px}
  .hero-content{padding-right:0}
  .service-main-body{padding:24px}
  .compare-wrap{gap:16px}
  .compare-card,.compare-card.new{padding:24px}
}
@media screen and (max-width:768px){
  .nav-panel{flex-wrap:wrap}
  .brand{margin-right:0}
  .nav-toggle{display:inline-flex}
  .site-nav{display:none;width:100%;flex-direction:column;align-items:stretch;gap:8px;padding:14px 4px 6px}
  .site-nav.open{display:flex}
  .nav-item{justify-content:flex-start;padding:12px 14px}
  .nav-cta{order:2;display:inline-flex;margin-left:auto;min-width:110px}
  .hero-trust{flex-direction:column;align-items:flex-start}
  .compare-wrap{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start}
  .footer-grid .cell{margin-bottom:32px}
  .metrics-zone{margin-top:8px}
  .info-list-item{flex-wrap:wrap}
  .info-arrow{display:none}
  .cta-card-left{margin-bottom:20px}
}
@media screen and (max-width:520px){
  body{font-size:15px}
  .brand-text{font-size:1rem}
  .nav-panel{padding:10px 10px}
  .btn{padding:10px 16px;flex:1;min-width:110px}
  .hero-trust{flex-direction:column}
  .mini-grid{grid-template-columns:repeat(3,1fr);gap:8px}
  .mini-item{padding:10px 6px}
  .index-card{padding:20px}
  .service-card{padding:20px}
  .info-main .info-title-row{flex-direction:column;align-items:flex-start}
  .form-card{padding:20px}
  .site-footer{padding-top:48px}
}

/* roulang page: article */
:root {
    --page-bg: #F4F8FA;
    --card-bg: #FFFFFF;
    --primary: #1D7B8E;
    --primary-deep: #155E6D;
    --primary-light: #E5F2F5;
    --secondary: #216869;
    --secondary-light: #E1EEEE;
    --accent: #E0894B;
    --ink: #1B2A32;
    --muted: #5D7180;
    --border: rgba(29, 123, 142, 0.14);
    --divider: #E5EBEF;
    --radius-large: 20px;
    --radius-mid: 16px;
    --radius-pill: 999px;
    --shadow-card: 0 14px 34px rgba(29,123,142,0.08), 0 3px 8px rgba(21,62,77,0.04);
    --shadow-hover: 0 18px 44px rgba(29,123,142,0.14), 0 6px 16px rgba(21,62,77,0.06);
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
    --space-section: clamp(64px, 7vw, 104px);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--page-bg);
    color: var(--ink);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color .22s ease, background .22s ease, border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

a:hover,
a:focus-visible {
    color: var(--primary-deep);
    outline: none;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(29,123,142,.32);
    outline-offset: 2px;
}

button,
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

.grid-container {
    max-width: 1280px;
    padding-left: 24px;
    padding-right: 24px;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 700;
    color: var(--ink);
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 46px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: .95rem;
    line-height: 1.2;
    border: 1px solid transparent;
    cursor: pointer;
    text-align: center;
    transition: all .22s ease;
}

.btn-primary {
    background: var(--primary);
    color: #fff !important;
    box-shadow: 0 8px 22px rgba(29,123,142,.2);
}

.btn-primary:hover {
    background: var(--primary-deep);
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(21,94,109,.24);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn-outline {
    background: rgba(255,255,255,.7);
    border-color: rgba(29,123,142,.28);
    color: var(--primary-deep);
}

.btn-outline:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: translateY(-2px);
}

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

.btn-light:hover {
    background: var(--primary-light);
    color: var(--primary-deep);
}

/* ========== header nav ========== */
.site-header {
    padding-top: 18px;
    background: transparent;
    position: relative;
    z-index: 20;
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-panel {
    background: var(--card-bg);
    border-radius: 22px;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 12px 20px;
    transition: box-shadow .3s ease;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-wrap: nowrap;
}

.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex: 0 0 auto;
}

.brand-text {
    color: var(--ink);
    font-weight: 700;
    font-size: 1.18rem;
    letter-spacing: .02em;
    white-space: nowrap;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 12px;
    flex-wrap: wrap;
    flex: 1;
}

.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-pill);
    color: var(--ink);
    font-size: .92rem;
    font-weight: 500;
    border: 1px solid transparent;
    transition: all .2s ease;
}

.nav-item i {
    color: var(--primary);
    font-size: .9rem;
}

.nav-item:hover {
    background: var(--secondary-light);
    color: var(--primary-deep);
    transform: translateY(-1px);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary-deep);
    font-weight: 600;
    border-color: rgba(29,123,142,.15);
}

.nav-item.active i {
    color: var(--primary-deep);
}

.nav-cta {
    flex: 0 0 auto;
    padding: 11px 22px;
    min-height: 42px;
    border-radius: var(--radius-pill);
}

.nav-toggle {
    display: none;
    background: var(--primary-light);
    color: var(--primary);
    width: 46px;
    height: 46px;
    border-radius: 14px;
    border: 1px solid transparent;
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* ========== article hero ========== */
.article-hero {
    position: relative;
    padding: 44px 0 36px;
    background-image: linear-gradient(180deg, rgba(255,255,255,.90) 0%, rgba(244,248,250,.96) 88%), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center 30%;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 9px;
    font-size: .86rem;
    color: var(--muted);
    padding: 0 0 22px;
}

.breadcrumb a {
    color: var(--muted);
}

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

.breadcrumb i {
    color: rgba(29,123,142,.34);
    font-size: .7rem;
}

.breadcrumb .crumb-current {
    color: var(--primary-deep);
    font-weight: 600;
    max-width: 340px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-shell {
    max-width: 900px;
    margin: 0 auto;
}

.article-heading {
    padding: 10px 0 8px;
}

.eyebrow-cat {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    border: 1px solid rgba(29,123,142,.12);
    color: var(--primary-deep);
    font-size: .82rem;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: var(--radius-pill);
    margin-bottom: 18px;
}

.article-heading h1 {
    font-size: clamp(1.85rem, 4vw, 2.8rem);
    line-height: 1.25;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -.01em;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px 24px;
    color: var(--muted);
    font-size: .9rem;
    padding: 13px 0 18px;
    border-top: 1px solid var(--divider);
    border-bottom: 1px solid var(--divider);
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.article-meta i {
    color: var(--primary);
    opacity: .75;
}

.summary-card {
    background: var(--primary-light);
    border: 1px solid rgba(29,123,142,.14);
    border-left: 4px solid var(--primary);
    border-radius: 16px;
    padding: 20px 22px;
    color: #2a3c45;
    font-size: 1rem;
    line-height: 1.85;
    margin-top: 18px;
}

.summary-card .summary-label {
    display: block;
    font-size: .78rem;
    font-weight: 700;
    color: var(--primary-deep);
    letter-spacing: .12em;
    margin-bottom: 6px;
    text-transform: uppercase;
}

/* ========== article content ========== */
.article-content-section {
    padding: clamp(46px, 6vw, 76px) 0 20px;
}

.article-content {
    font-size: 1.125rem;
    line-height: 1.9;
    color: #26353e;
    overflow-wrap: break-word;
}

.article-content > * + * {
    margin-top: 1.35em;
}

.article-content p,
.article-content blockquote {
    max-width: 70ch;
}

.article-content h2 {
    font-size: 1.65rem;
    margin-top: 1.9em;
    margin-bottom: .65em;
    padding-bottom: .55em;
    border-bottom: 1px solid var(--divider);
}

.article-content h3 {
    font-size: 1.35rem;
    margin-top: 1.7em;
    margin-bottom: .55em;
}

.article-content ul,
.article-content ol {
    padding-left: 1.5em;
    max-width: 70ch;
}

.article-content li {
    margin: .5em 0;
}

.article-content blockquote {
    background: var(--primary-light);
    border-radius: 0 16px 16px 0;
    border-left: 4px solid var(--primary);
    padding: 18px 22px;
    color: #255460;
    font-style: normal;
}

.article-content img,
.article-content table {
    border-radius: 16px;
    max-width: 100%;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-content a:hover {
    color: var(--primary-deep);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0;
    display: block;
    overflow-x: auto;
    box-shadow: 0 0 0 1px var(--divider);
    border-radius: 14px;
}

.article-content th,
.article-content td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--divider);
    text-align: left;
    white-space: nowrap;
    font-size: .95rem;
}

.article-content th {
    background: var(--primary-light);
    font-weight: 600;
    color: var(--primary-deep);
}

.article-content code {
    background: #EDF2F5;
    border-radius: 7px;
    padding: 2px 8px;
    font-size: .88em;
}

.article-content pre {
    background: #1D2A32;
    color: #F4F8FA;
    border-radius: 16px;
    padding: 22px;
    overflow-x: auto;
    line-height: 1.6;
}

/* ========== not found ========== */
.not-found-panel {
    text-align: center;
    background: var(--card-bg);
    border: 1px dashed rgba(29,123,142,.24);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: clamp(40px, 7vw, 76px) 28px;
    margin: 0 0 28px;
}

.empty-icon {
    width: 76px;
    height: 76px;
    border-radius: 22px;
    background: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.9rem;
    margin-bottom: 22px;
}

.not-found-panel h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.not-found-panel p {
    color: var(--muted);
    max-width: 540px;
    margin: 0 auto 24px;
}

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

/* ========== tags ========== */
.article-tags-section {
    padding: 20px 0 34px;
}

.tag-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-row .tag-label {
    font-size: .9rem;
    color: var(--muted);
    margin-right: 6px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--card-bg);
    border: 1px solid rgba(29,123,142,.16);
    color: var(--primary-deep);
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    font-size: .84rem;
    font-weight: 500;
}

/* ========== pager ========== */
.article-pager {
    padding: 22px 0 10px;
}

.pager-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.pager-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 22px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.pager-card:hover {
    border-color: rgba(29,123,142,.28);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.pager-card i {
    width: 42px;
    height: 42px;
    flex: 0 0 auto;
    border-radius: 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.pager-card .prev-icon {
    background: var(--secondary-light);
    color: var(--secondary);
}

.pager-card .next-icon {
    background: var(--primary-light);
    color: var(--primary);
}

.pager-card small {
    display: block;
    color: var(--muted);
    font-size: .78rem;
}

.pager-card strong {
    color: var(--ink);
    font-size: 1rem;
}

.pager-card.next {
    text-align: right;
    justify-content: flex-end;
}

/* ========== related / guide ========== */
.related-section {
    padding: clamp(46px, 6vw, 80px) 0;
}

.related-head {
    text-align: center;
    margin-bottom: 36px;
}

.related-head .section-tag {
    display: inline-flex;
    background: var(--primary-light);
    color: var(--primary-deep);
    border-radius: var(--radius-pill);
    padding: 6px 16px;
    font-size: .82rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.related-head h2 {
    font-size: clamp(1.6rem, 2.8vw, 2.3rem);
    margin-bottom: 10px;
}

.related-head p {
    color: var(--muted);
    max-width: 640px;
    margin: 0 auto;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.related-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    transition: transform .25s ease, box-shadow .25s ease;
}

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

.related-card .thumb {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--primary-light);
}

.related-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}

.related-card:hover .thumb img {
    transform: scale(1.04);
}

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

.related-card h3 {
    font-size: 1.18rem;
    margin-bottom: 8px;
}

.related-card p {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

.related-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .78rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* ========== cta ========== */
.article-cta {
    padding: clamp(46px, 6vw, 78px) 0;
    margin: 0 0 30px;
}

.cta-banner {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    padding: clamp(36px, 6vw, 68px) 32px;
    background-image: linear-gradient(100deg, rgba(29,94,108,.96) 0%, rgba(29,123,142,.84) 56%, rgba(33,104,105,.72) 100%), url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center 40%;
    color: #fff;
    box-shadow: 0 20px 44px rgba(21,62,77,.22);
}

.cta-banner h2 {
    color: #fff;
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    max-width: 620px;
    margin-bottom: 12px;
}

.cta-banner p {
    color: rgba(255,255,255,.86);
    max-width: 650px;
    font-size: 1.02rem;
    line-height: 1.8;
    margin-bottom: 26px;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.cta-actions .btn-outline {
    border-color: rgba(255,255,255,.45);
    color: #fff;
    background: rgba(255,255,255,.06);
}

.cta-actions .btn-outline:hover {
    background: rgba(255,255,255,.18);
    border-color: #fff;
    color: #fff;
}

/* ========== footer ========== */
.site-footer {
    background: #EAF0F3;
    border-top: 1px solid rgba(29,123,142,.08);
    padding: 58px 0 26px;
    margin-top: 30px;
}

.footer-grid {
    row-gap: 36px;
    margin-bottom: 44px;
}

.site-footer .brand-text {
    font-size: 1.1rem;
}

.footer-about {
    color: var(--muted);
    font-size: .92rem;
    max-width: 360px;
    margin-top: 16px;
    line-height: 1.8;
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: .02em;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 11px;
}

.footer-links a {
    color: var(--muted);
    font-size: .9rem;
    line-height: 1.5;
}

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

.footer-contact-card {
    background: rgba(255,255,255,.72);
    border: 1px solid rgba(29,123,142,.12);
    border-radius: 16px;
    padding: 18px;
    font-size: .88rem;
    color: var(--muted);
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-contact-card p {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    line-height: 1.7;
}

.footer-contact-card i {
    color: var(--primary);
    margin-top: 5px;
    flex: 0 0 auto;
}

.footer-bottom {
    border-top: 1px solid rgba(29,123,142,.12);
    padding-top: 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    color: var(--muted);
    font-size: .84rem;
}

/* ========== responsive ========== */
@media screen and (max-width: 1024px) {
    .site-nav {
        margin-left: 0;
    }

    .nav-item {
        padding: 9px 13px;
        font-size: .86rem;
    }
}

@media screen and (max-width: 860px) {
    .grid-container {
        padding-left: 18px;
        padding-right: 18px;
    }

    .nav-panel {
        flex-wrap: wrap;
        gap: 12px;
    }

    .brand {
        margin-right: auto;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .site-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        padding-top: 6px;
        border-top: 1px solid var(--divider);
        margin-top: 4px;
    }

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

    .nav-item {
        justify-content: flex-start;
        border-radius: 14px;
        padding: 13px 15px;
        font-size: .96rem;
    }

    .nav-cta {
        margin-left: auto;
        width: auto;
    }

    .article-heading h1 {
        font-size: clamp(1.65rem, 5vw, 2.3rem);
    }

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

    .related-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .footer-contact-card {
        max-width: 460px;
    }
}

@media screen and (max-width: 640px) {
    .header-inner {
        padding: 0 14px;
    }

    .nav-panel {
        padding: 12px;
        border-radius: 18px;
    }

    .brand-icon {
        width: 38px;
        height: 38px;
        border-radius: 12px;
    }

    .brand-text {
        font-size: 1.02rem;
    }

    .nav-toggle {
        width: 42px;
        height: 42px;
    }

    .nav-cta {
        width: 100%;
        margin-top: 4px;
        border-radius: 12px;
    }

    .article-hero {
        padding-top: 30px;
    }

    .article-shell {
        padding: 0 2px;
    }

    .article-meta {
        gap: 12px;
        font-size: .84rem;
    }

    .summary-card {
        padding: 16px 16px;
    }

    .article-content {
        font-size: 1.05rem;
        line-height: 1.85;
    }

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

    .pager-card {
        padding: 16px 16px;
    }

    .cta-banner {
        padding: 32px 22px;
    }

    .site-footer {
        padding-top: 42px;
    }
}

@media screen and (max-width: 420px) {
    .grid-container {
        padding-left: 12px;
        padding-right: 12px;
    }

    .brand-text {
        font-size: .96rem;
    }

    .nav-panel {
        gap: 8px;
    }
}

/* roulang page: category1 */
:root{
  --bg-page:#F4F8FA;
  --card:#FFFFFF;
  --primary:#1D7B8E;
  --primary-deep:#155E6D;
  --primary-light:#E5F2F5;
  --secondary:#216869;
  --secondary-light:#E1EEEE;
  --warm:#E0894B;
  --text:#1B2A32;
  --text-weak:#5D7180;
  --border:rgba(29,123,142,0.14);
  --line:#E5EBEF;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-pill:999px;
  --shadow:0 14px 34px rgba(29,123,142,0.08),0 3px 8px rgba(21,62,77,0.04);
  --shadow-hover:0 18px 44px rgba(29,123,142,0.14),0 6px 16px rgba(21,62,77,0.06);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg-page);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(29,123,142,.35);
  outline-offset:2px;
  border-radius:6px;
}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit;}
ul,ol{list-style:none;padding:0;margin:0;}
main{display:block;}
.grid-container{max-width:1280px;padding-left:24px;padding-right:24px;}
section{position:relative;}
.section-padding{padding-block:clamp(72px,8vw,120px);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:12px 24px;
  border-radius:12px;
  font-size:1rem;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  transition:all .22s ease;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 8px 20px rgba(29,123,142,.18);
}
.btn-primary:hover{
  background:var(--primary-deep);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 12px 26px rgba(29,123,142,.25);
}
.btn-primary:active{transform:translateY(0);background:#135362;}
.btn-outline{
  background:transparent;
  color:var(--primary-deep);
  border:1px solid var(--primary);
}
.btn-outline:hover{
  background:var(--primary-light);
  border-color:var(--primary);
  color:var(--primary-deep);
}
.btn-ghost-light{
  background:rgba(255,255,255,.85);
  color:var(--primary-deep);
  border:1px solid var(--border);
}
.btn-ghost-light:hover{
  background:#fff;
  border-color:rgba(29,123,142,.35);
  transform:translateY(-2px);
}

/* Header & Nav */
.site-header{
  padding-top:20px;
  background:transparent;
  position:relative;
  z-index:20;
}
.header-inner{
  max-width:1380px;
  margin:0 auto;
  padding:0 24px;
}
.nav-panel{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:20px;
  box-shadow:var(--shadow);
  padding:14px 18px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-icon{
  width:42px;
  height:42px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--primary-light);
  color:var(--primary-deep);
  border-radius:12px;
  font-size:1.3rem;
}
.brand-text{
  font-size:1.24rem;
  font-weight:700;
  color:var(--text);
  letter-spacing:.02em;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:10px 14px;
  border-radius:var(--radius-pill);
  color:var(--text-weak);
  font-size:.92rem;
  font-weight:500;
  border:1px solid transparent;
  transition:color .2s,background .2s;
}
.nav-item i{font-size:.95rem;}
.nav-item:hover{
  color:var(--primary-deep);
  background:var(--primary-light);
}
.nav-item.active{
  background:var(--primary-light);
  color:var(--primary-deep);
  font-weight:700;
  border-color:rgba(29,123,142,.22);
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:var(--primary-light);
  color:var(--primary-deep);
  border-radius:12px;
  font-size:1.2rem;
  flex-shrink:0;
}
.nav-cta{
  min-height:44px;
  padding:10px 20px;
}

/* Category Hero */
.category-hero{
  margin-top:30px;
  border-radius:28px;
  border:1px solid var(--border);
  background:
    linear-gradient(180deg,rgba(255,255,255,.94),rgba(244,248,250,.92)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:clamp(40px,7vw,82px);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:.88rem;
  color:var(--text-weak);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--text-weak);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .crumb-current{color:var(--primary-deep);font-weight:600;}
.cat-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary-deep);
  font-size:.85rem;
  font-weight:600;
  padding:7px 14px;
  border-radius:var(--radius-pill);
  margin-bottom:18px;
  border:1px solid rgba(29,123,142,.18);
}
.category-hero h1{
  font-size:clamp(2rem,4.5vw,3.3rem);
  line-height:1.15;
  font-weight:700;
  max-width:720px;
  letter-spacing:-.01em;
  color:var(--text);
  margin-bottom:16px;
}
.hero-summary{
  font-size:1.1rem;
  line-height:1.8;
  color:var(--text-weak);
  max-width:780px;
  margin-bottom:30px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

/* Guide Main */
.guide-main{padding-top:clamp(36px,5vw,54px);}
.guide-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:24px;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.guide-left{
  padding:clamp(26px,3.6vw,52px);
  border-right:1px solid var(--line);
}
.guide-aside{
  padding:clamp(22px,3vw,38px);
}
.aside-inner{
  position:sticky;
  top:24px;
}
.side-note{
  background:var(--primary-light);
  border:1px solid rgba(29,123,142,.14);
  border-radius:18px;
  padding:22px;
  margin-bottom:22px;
}
.side-note h2{
  font-size:1.15rem;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
  color:var(--primary-deep);
}
.side-note h2 i{font-size:1rem;}
.anchor-list li{margin-bottom:6px;}
.anchor-list a{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:12px;
  color:var(--text-weak);
  font-size:.92rem;
  font-weight:500;
}
.anchor-list a i{font-size:.75rem;opacity:.7;}
.anchor-list a:hover,.anchor-list a:focus{
  background:#fff;
  color:var(--primary-deep);
}
.related-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:0 6px 16px rgba(29,123,142,.06);
  padding:6px;
}
.related-row{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px;
  border-radius:12px;
  transition:background .2s ease,transform .2s ease;
}
.related-row + .related-row{border-top:1px solid var(--line);}
.related-row:hover{background:var(--primary-light);transform:translateX(3px);}
.related-row i{
  width:40px;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--primary-light);
  color:var(--primary-deep);
  border-radius:12px;
  flex-shrink:0;
}
.related-row b{font-size:.98rem;font-weight:700;color:var(--text);}
.related-row span{font-size:.82rem;color:var(--text-weak);display:block;line-height:1.4;}

.guide-left .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary-deep);
  font-size:.84rem;
  font-weight:600;
  padding:6px 12px;
  border-radius:var(--radius-pill);
  margin-bottom:20px;
}
.guide-left > div + div{margin-top:34px;}
.guide-content h2{
  font-size:clamp(1.35rem,2.4vw,1.8rem);
  font-weight:700;
  line-height:1.3;
  color:var(--text);
  margin-bottom:14px;
}
.guide-content h3{
  font-size:1.22rem;
  font-weight:700;
  color:var(--text);
  margin:20px 0 10px;
}
.guide-content p{
  color:var(--text-weak);
  margin-bottom:16px;
  line-height:1.85;
}
.step-list{
  margin:20px 0;
}
.step-list li{
  display:flex;
  gap:12px;
  background:#F7FAFC;
  border:1px solid rgba(29,123,142,.1);
  border-radius:14px;
  padding:14px 16px;
  margin-bottom:10px;
  line-height:1.7;
}
.step-list li i{
  color:var(--primary);
  margin-top:5px;
  font-size:1rem;
  flex-shrink:0;
}
.note-card{
  display:flex;
  gap:14px;
  background:var(--secondary-light);
  border:1px solid rgba(33,104,105,.18);
  border-radius:16px;
  padding:18px 20px;
  margin-top:22px;
  color:var(--secondary);
}
.note-card i{font-size:1.2rem;margin-top:3px;}
.note-card p{color:#2F4C4C;margin-bottom:0;font-size:.96rem;}
.article-media{
  border-radius:16px;
  overflow:hidden;
  background:var(--primary-light);
  border:1px solid rgba(29,123,142,.2);
  margin:18px 0 10px;
}
.article-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .5s ease;
}
.article-media:hover img{transform:scale(1.02);}
.media-caption{
  font-size:.85rem;
  color:var(--text-weak);
  padding:10px 4px 4px;
  line-height:1.6;
  text-align:center;
}
.rule-list li{
  position:relative;
  padding-left:24px;
  margin-bottom:8px;
  color:var(--text-weak);
}
.rule-list li::before{
  content:"✓";
  position:absolute;
  left:0;
  color:var(--secondary);
  font-weight:700;
}
.focus-tip{
  display:flex;
  gap:12px;
  align-items:flex-start;
  background:#fff6ef;
  border:1px solid rgba(224,137,75,.22);
  border-radius:14px;
  padding:14px 16px;
  color:#78appearance;
  margin-top:18px;
}
.focus-tip i{color:var(--warm);margin-top:4px;}

/* FAQ */
.faq-section{
  margin-top:clamp(20px,4vw,50px);
}
.faq-wrap{
  background:#fff;
  border-radius:26px;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  padding:clamp(26px,4vw,54px);
}
.faq-heading{
  text-align:center;
  margin-bottom:30px;
}
.faq-heading .eyebrow{
  display:inline-flex;
  background:var(--primary-light);
  color:var(--primary-deep);
  font-size:.84rem;
  font-weight:600;
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:14px;
}
.faq-heading h2{
  font-size:clamp(1.65rem,3vw,2.4rem);
  font-weight:700;
  margin-bottom:8px;
}
.faq-heading p{color:var(--text-weak);font-size:1rem;}
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--bg-page);
  border:1px solid rgba(29,123,142,.12);
  border-radius:16px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.faq-item.active{
  border-color:rgba(29,123,142,.36);
  box-shadow:0 8px 22px rgba(29,123,142,.08);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  text-align:left;
  font-size:1.06rem;
  font-weight:600;
  color:var(--text);
  min-height:54px;
}
.faq-q i{
  flex-shrink:0;
  width:32px;
  height:32px;
  border-radius:50%;
  background:#fff;
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.85rem;
  border:1px solid var(--border);
  transition:transform .25s ease;
}
.faq-item.active .faq-q i{transform:rotate(180deg);background:var(--primary);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.active .faq-a{
  max-height:400px;
}
.faq-a-inner{
  padding:0 22px 22px;
  color:var(--text-weak);
  border-top:1px solid var(--line);
  padding-top:16px;
  margin-top:0;
}
.faq-a p{margin-bottom:0;}

/* CTA */
.cta-section{padding-top:0;}
.cta-box{
  background:
   linear-gradient(180deg,#E5F2F5,rgba(229,242,245,.7)),
   url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border:1px solid rgba(29,123,142,.22);
  border-radius:28px;
  padding:clamp(30px,5vw,68px);
  text-align:center;
  box-shadow:var(--shadow);
}
.cta-box h2{
  font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.cta-box p{
  font-size:1.05rem;
  color:var(--text-weak);
  max-width:680px;
  margin:0 auto 26px;
}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

/* Footer */
.site-footer{
  background:#EAF1F4;
  border-top:1px solid var(--border);
  margin-top:clamp(36px,6vw,72px);
  padding:60px 0 26px;
}
.footer-grid{
  row-gap:30px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-about{
  color:var(--text-weak);
  font-size:.94rem;
  line-height:1.85;
  max-width:360px;
}
.footer-title{
  font-size:1rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:14px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.footer-links a{
  color:var(--text-weak);
  font-size:.93rem;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.footer-links a::before{
  content:"·";
  color:var(--primary);
  font-weight:700;
}
.footer-links a:hover{color:var(--primary-deep);}
.footer-contact-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  color:var(--text-weak);
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:.9rem;
}
.footer-contact-card i{
  width:22px;
  color:var(--primary);
  margin-right:4px;
}
.footer-bottom{
  margin-top:40px;
  padding-top:22px;
  border-top:1px solid var(--line);
  text-align:center;
  color:var(--text-weak);
  font-size:.85rem;
  line-height:1.8;
}

/* Responsive */
@media (max-width:1024px){
  .site-nav{gap:2px;}
  .nav-item{padding:8px 10px;font-size:.85rem;}
  .guide-left{border-right:none;}
  .guide-aside{padding-top:24px;}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .site-nav{
    display:none;
    position:absolute;
    top:calc(100% + 12px);
    left:0;
    right:0;
    background:#fff;
    border:1px solid var(--border);
    border-radius:18px;
    box-shadow:var(--shadow-hover);
    padding:14px;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    margin-left:0;
    z-index:30;
  }
  .site-nav.open{display:flex;}
  .nav-item{
    justify-content:flex-start;
    padding:13px 14px;
    border-radius:12px;
    font-size:.96rem;
  }
  .nav-cta{margin-left:auto;}
  .category-hero{padding:36px 24px;}
  .guide-card{border-radius:20px;}
  .faq-wrap{padding:28px 20px;}
}
@media (max-width:640px){
  body{font-size:15px;}
  .header-inner{padding:0 12px;}
  .site-header{padding-top:14px;}
  .nav-panel{padding:12px;gap:10px;border-radius:16px;}
  .brand-text{font-size:1.05rem;}
  .brand-icon{width:36px;height:36px;font-size:1.1rem;border-radius:10px;}
  .nav-cta{min-height:40px;padding:8px 14px;font-size:.88rem;}
  .nav-toggle{width:40px;height:40px;}
  .grid-container{padding-left:14px;padding-right:14px;}
  .category-hero{
    border-radius:20px;
    margin-top:18px;
    padding:30px 18px;
  }
  .hero-summary{font-size:1rem;}
  .guide-left{padding:24px 18px;}
  .guide-aside{padding:18px;}
  .aside-inner{position:static;}
  .section-padding{padding-block:48px;}
  .faq-wrap{padding:22px 14px;}
  .faq-q{padding:15px 16px;font-size:.98rem;}
  .faq-item.active .faq-a{max-height:600px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{display:block;}
  .footer-grid > .cell{margin-bottom:26px;}
}

/* roulang page: category2 */
:root {
            --color-bg: #F4F8FA;
            --color-card: #FFFFFF;
            --color-primary: #1D7B8E;
            --color-primary-dark: #155E6D;
            --color-primary-light: #E5F2F5;
            --color-secondary: #216869;
            --color-secondary-light: #E1EEEE;
            --color-accent: #E0894B;
            --color-text: #1B2A32;
            --color-text-muted: #5D7180;
            --color-border: rgba(29, 123, 142, 0.14);
            --color-divider: #E5EBEF;
            --radius-large: 20px;
            --radius-medium: 16px;
            --radius-small: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 14px 34px rgba(29, 123, 142, 0.08), 0 3px 8px rgba(21, 62, 77, 0.04);
            --shadow-card-hover: 0 18px 44px rgba(29, 123, 142, 0.14), 0 6px 16px rgba(21, 62, 77, 0.06);
            --space-section: clamp(72px, 8vw, 120px);
            --space-mobile: 48px;
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-family);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .grid-container {
            max-width: 1280px;
            padding-inline: 24px;
        }
        @media (max-width: 640px) {
            .grid-container {
                padding-inline: 16px;
            }
        }

        .site-header {
            padding: 20px 0 0;
            position: relative;
            z-index: 50;
            background: transparent;
        }
        .header-inner {
            width: 92%;
            max-width: 1280px;
            margin: 0 auto;
        }
        .nav-panel {
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius-large);
            box-shadow: 0 10px 30px rgba(29, 123, 142, 0.07);
            border: 1px solid var(--color-border);
            padding: 10px 24px 10px 18px;
            display: flex;
            align-items: center;
            gap: 20px;
            min-height: 72px;
            backdrop-filter: blur(6px);
            position: relative;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--color-text);
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            width: 46px;
            height: 46px;
            border-radius: 10px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            margin-left: auto;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: 12px;
        }
        .nav-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            border-radius: var(--radius-small);
            font-size: 0.95rem;
            color: var(--color-text-muted);
            border: 1px solid transparent;
            transition: all 0.2s ease;
            font-weight: 500;
            white-space: nowrap;
        }
        .nav-item i {
            font-size: 0.9rem;
            color: var(--color-primary);
            opacity: 0.75;
        }
        .nav-item:hover {
            color: var(--color-primary-dark);
            background: var(--color-primary-light);
            border-color: rgba(29, 123, 142, 0.12);
        }
        .nav-item.active {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            border-color: rgba(29, 123, 142, 0.12);
            font-weight: 600;
        }
        .nav-item.active i {
            opacity: 1;
        }
        .nav-item.active::after {
            content: "";
            display: block;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            top: calc(100% - 4px);
            position: absolute;
            left: 0;
        }
        .nav-cta {
            margin-left: auto;
            font-size: 0.95rem;
            padding: 10px 24px;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-small);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-small);
            padding: 12px 28px;
            min-height: 46px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(29, 123, 142, 0.18);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 20px rgba(29, 123, 142, 0.28);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
        }
        .btn-large {
            padding: 14px 36px;
            font-size: 1.05rem;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(29, 123, 142, 0.35);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(29, 123, 142, 0.12);
        }

        @media (max-width: 1024px) {
            .nav-panel {
                flex-wrap: wrap;
                padding: 12px 16px;
            }
            .site-nav {
                order: 3;
                width: 100%;
                margin: 10px 0 6px;
                gap: 6px;
                flex-wrap: wrap;
            }
            .nav-item {
                flex: 1 1 auto;
                padding: 10px 12px;
                font-size: 0.9rem;
                justify-content: center;
            }
            .nav-cta {
                margin-left: auto;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                padding: 12px 0 0;
            }
            .header-inner {
                width: 100%;
                padding-inline: 14px;
            }
            .nav-panel {
                border-radius: 16px;
                padding: 12px;
                gap: 12px;
            }
            .brand-text {
                font-size: 1.05rem;
            }
            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }
            .site-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 8px;
                order: 4;
            }
            .site-nav.open {
                display: flex;
            }
            .nav-item {
                width: 100%;
                display: flex;
                align-items: center;
                gap: 12px;
                padding: 13px 16px;
                justify-content: flex-start;
                font-size: 0.92rem;
                border-radius: 10px;
                background: var(--color-bg);
            }
            .nav-item i {
                font-size: 1rem;
                width: 20px;
                text-align: center;
            }
            .nav-item.active {
                background: var(--color-primary-light);
                font-weight: 700;
            }
            .nav-item.active::after {
                display: none;
            }
            .nav-cta {
                margin-left: 0;
                width: 100%;
                margin-top: 4px;
            }
        }
        @media (max-width: 460px) {
            .nav-panel {
                gap: 8px;
            }
            .brand-text {
                font-size: 0.98rem;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .nav-cta {
                display: none;
            }
        }

        .page-hero {
            position: relative;
            padding: clamp(50px, 6vw, 80px) 0 clamp(50px, 5vw, 70px);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            border-bottom: 1px solid var(--color-border);
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(244, 248, 250, 0.92);
            backdrop-filter: blur(2px);
        }
        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .page-hero-card {
            background: rgba(255, 255, 255, 0.94);
            border-radius: var(--radius-large);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            padding: clamp(32px, 4vw, 52px);
            max-width: 860px;
        }
        .breadcrumb {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .sep {
            color: #aaa;
            font-size: 12px;
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 3.1rem);
            line-height: 1.2;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .page-hero .hero-desc {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            max-width: 660px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0 40px;
                background-attachment: scroll;
            }
            .page-hero-card {
                border-radius: 16px;
                padding: 28px 20px;
            }
            .page-hero .hero-desc {
                font-size: 1rem;
                line-height: 1.75;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

        .service-overview-section {
            padding: var(--space-section) 0;
        }
        .service-overview-layout {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: clamp(30px, 4vw, 56px);
            align-items: start;
        }
        .service-main-content {
            min-width: 0;
        }
        .service-main-content h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.1rem);
            line-height: 1.35;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
            padding-top: 0;
        }
        .service-main-content h2::after {
            content: "";
            display: block;
            width: 42px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 4px;
            margin-top: 10px;
        }
        .service-main-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin: 30px 0 12px;
            color: var(--color-text);
            line-height: 1.4;
        }
        .service-main-content p {
            color: var(--color-text-muted);
            font-size: 1rem;
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .content-img-wrap {
            border-radius: var(--radius-medium);
            overflow: hidden;
            margin: 24px 0;
            position: relative;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .content-img-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform 0.5s ease;
            aspect-ratio: 16/9;
        }
        .content-img-wrap:hover img {
            transform: scale(1.025);
        }
        .content-img-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(27, 42, 50, 0.7));
            color: #fff;
            font-size: 0.9rem;
            padding: 30px 18px 12px;
            z-index: 1;
        }
        .service-feature-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin: 24px 0;
        }
        .service-feature-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            background: rgba(255, 255, 255, 0.85);
            padding: 14px 18px;
            border-radius: var(--radius-medium);
            border: 1px solid var(--color-border);
            font-size: 0.97rem;
            color: var(--color-text-muted);
            line-height: 1.65;
        }
        .service-feature-list li i {
            color: var(--color-primary);
            font-size: 1.05rem;
            padding-top: 2px;
        }
        .service-feature-list li strong {
            color: var(--color-text);
        }

        .side-card-panel {
            position: sticky;
            top: 24px;
            display: flex;
            flex-direction: column;
            gap: 22px;
        }
        .side-card {
            background: var(--color-card);
            border-radius: var(--radius-medium);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }
        .side-card-header {
            background: var(--color-primary-light);
            padding: 16px 22px;
            border-bottom: 1px solid rgba(29, 123, 142, 0.12);
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
        }
        .side-card-header i {
            color: var(--color-primary);
        }
        .side-card-body {
            padding: 12px 16px;
        }
        .side-nav-links {
            display: flex;
            flex-direction: column;
        }
        .side-nav-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 12px;
            border-radius: 8px;
            font-size: 0.93rem;
            color: var(--color-text);
            transition: background 0.2s ease, color 0.2s ease;
            font-weight: 500;
        }
        .side-nav-links a::before {
            content: "";
            display: none;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-primary);
        }
        .side-nav-links a:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
        }
        .side-nav-links a.active {
            background: var(--color-primary);
            color: #fff;
        }
        .side-nav-links a i {
            font-size: 0.9rem;
            color: var(--color-primary);
            width: 20px;
            text-align: center;
        }
        .side-nav-links a.active i {
            color: #fff;
        }
        .contact-mini-card {
            padding: 22px;
            background: var(--color-card);
            border-radius: var(--radius-medium);
            border: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }
        .contact-mini-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--color-secondary);
        }
        .contact-mini-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .contact-mini-card p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .contact-mini-card p i {
            color: var(--color-secondary);
            font-size: 1rem;
            padding-top: 2px;
        }

        @media (max-width: 920px) {
            .service-overview-layout {
                grid-template-columns: 1fr;
            }
            .side-card-panel {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media (max-width: 640px) {
            .side-card-panel {
                grid-template-columns: 1fr;
            }
        }

        .modules-section {
            padding: var(--space-section) 0;
            background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-primary-light) 100%);
            border-top: 1px solid var(--color-border);
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 18px;
        }
        .section-desc {
            color: var(--color-text-muted);
            font-size: 1.05rem;
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: clamp(36px, 4vw, 56px);
        }
        .modules-bento {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 22px;
            align-items: stretch;
        }
        .module-card {
            background: var(--color-card);
            border-radius: var(--radius-large);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            position: relative;
        }
        .module-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .module-card .card-topline {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-primary);
            border-radius: 0 0 4px 4px;
        }
        .module-large {
            grid-column: span 7;
            grid-row: span 2;
        }
        .module-mid {
            grid-column: span 3;
            grid-row: span 2;
        }
        .module-small {
            grid-column: span 2;
            grid-row: span 1;
        }
        .module-wide {
            grid-column: span 5;
        }
        .module-tall {
            grid-column: span 4;
            grid-row: span 2;
        }

        .module-card-body {
            padding: clamp(20px, 2.5vw, 32px);
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .module-card-body .module-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .module-card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .module-card-body p {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            flex-grow: 1;
        }
        .module-card-img {
            margin-top: 16px;
            border-radius: 12px;
            overflow: hidden;
            position: relative;
        }
        .module-card-img img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .module-card:hover .module-card-img img {
            transform: scale(1.04);
        }
        .module-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.95rem;
            color: var(--color-primary);
            font-weight: 600;
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--color-divider);
            transition: gap 0.2s ease;
        }
        .module-link:hover {
            gap: 10px;
            color: var(--color-primary-dark);
        }
        .module-card-img-cover {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(29, 123, 142, 0.25);
            color: #fff;
            font-size: 1.1rem;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .module-card:hover .module-card-img-cover {
            opacity: 1;
        }

        @media (max-width: 1024px) {
            .modules-bento {
                grid-template-columns: repeat(6, 1fr);
                gap: 16px;
            }
            .module-large {
                grid-column: span 6;
                grid-row: auto;
            }
            .module-mid {
                grid-column: span 3;
                grid-row: auto;
            }
            .module-small {
                grid-column: span 2;
                grid-row: auto;
            }
            .module-wide {
                grid-column: span 6;
            }
            .module-tall {
                grid-column: span 3;
            }
        }
        @media (max-width: 640px) {
            .modules-bento {
                grid-template-columns: 1fr;
            }
            .module-card {
                grid-column: span 1 !important;
                grid-row: auto !important;
            }
        }

        .feature-panel {
            padding: var(--space-section) 0;
            background: var(--color-card);
        }
        .feature-main-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: clamp(30px, 4vw, 60px);
            align-items: center;
        }
        .feature-left-col {
            position: relative;
        }
        .feature-left-col .img-main-wrap {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/5;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .feature-left-col .img-main-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-float-img {
            position: absolute;
            bottom: -22px;
            right: -12px;
            width: 40%;
            border-radius: 16px;
            overflow: hidden;
            border: 4px solid #fff;
            box-shadow: var(--shadow-card);
        }
        .feature-right-col {
            padding-left: 4px;
        }
        .feature-right-col h2 {
            font-size: clamp(1.7rem, 3vw, 2.42rem);
            line-height: 1.28;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .feature-right-col h2 span {
            color: var(--color-primary);
        }
        .feature-right-col .lead {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            line-height: 1.85;
            margin-bottom: 28px;
            border-left: 3px solid var(--color-secondary);
            padding-left: 20px;
        }
        .feature-right-col ul {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .feature-right-col ul li {
            display: flex;
            align-items: flex-start;
            gap: 13px;
            background: var(--color-primary-light);
            border-radius: var(--radius-medium);
            padding: 18px 20px;
            transition: background 0.2s ease;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        .feature-right-col ul li:hover {
            background: #d3e9ed;
        }
        .feature-right-col ul li .num {
            background: var(--color-primary-dark);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 700;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .feature-right-col ul li p {
            color: var(--color-text);
            font-size: 0.97rem;
            line-height: 1.65;
            margin-bottom: 0;
        }
        .feature-right-col ul li p strong {
            display: inline-block;
            font-size: 1.08rem;
            margin-bottom: 4px;
        }
        @media (max-width: 768px) {
            .feature-main-grid {
                grid-template-columns: 1fr;
            }
            .feature-float-img {
                display: none;
            }
        }

        .process-steps {
            padding: var(--space-section) 0;
        }
        .process-title {
            margin-bottom: 44px;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px 22px;
            width: 100%;
        }
        .step-item {
            background: var(--color-card);
            border-radius: var(--radius-medium);
            padding: 28px 22px 22px;
            border: 1px solid var(--color-border);
            position: relative;
            box-shadow: 0 4px 18px rgba(29, 123, 142, 0.05);
            min-height: 160px;
        }
        .step-item .step-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: rgba(29, 123, 142, 0.08);
            position: absolute;
            top: 8px;
            right: 16px;
            line-height: 1;
        }
        .step-arrow {
            position: absolute;
            top: calc(50% - 12px);
            right: -27px;
            z-index: 4;
            color: var(--color-primary);
            font-size: 16px;
            background: #fff;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 8px rgba(29, 123, 142, 0.2);
        }
        .step-item:last-child .step-arrow {
            display: none;
        }
        @media (max-width: 940px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
        }
        @media (max-width: 500px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-item {
                min-height: auto;
                padding: 22px;
            }
        }

        .target-list {
            padding: clamp(60px, 6vw, 100px) 0;
            background: linear-gradient(180deg, #fff 0%, rgba(29, 123, 142, 0.09) 100%);
        }
        .target-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .target-card {
            background: rgba(255, 255, 255, 0.8);
            border-radius: var(--radius-medium);
            border: 1px solid var(--color-border);
            padding: 30px 26px;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .target-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .target-card .t-icon {
            width: 44px;
            height: 44px;
            background: var(--color-primary-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            color: var(--color-primary);
            margin-bottom: 18px;
        }
        .target-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .target-card p {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        @media (max-width: 1024px) {
            .target-cards {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .target-cards {
                grid-template-columns: 1fr;
                margin-top: 24px;
            }
        }

        .guide-cta {
            padding: var(--space-section) 0;
            background: var(--color-card);
        }
        .cta-card {
            background: linear-gradient(135deg, var(--color-primary-light) 0%, #f0f7fa 60%, var(--color-secondary-light) 100%);
            border: 1px solid rgba(29, 123, 142, 0.18);
            border-radius: var(--radius-large);
            padding: clamp(36px, 5vw, 70px);
            position: relative;
            text-align: center;
        }
        .cta-card h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text);
        }
        .cta-card .cta-lead {
            font-size: 1.02rem;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }
        .cta-inner-actions {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-inner-actions .btn {
            min-width: 180px;
        }
        @media (max-width: 640px) {
            .cta-card {
                padding: 30px 18px;
                border-radius: 16px;
            }
            .cta-inner-actions .btn {
                min-width: 0;
                width: 100%;
            }
        }

        .faq-section {
            padding: var(--space-section) 0;
        }
        .faq-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 40px;
            align-items: start;
        }
        .faq-side {
            position: sticky;
            top: 30px;
        }
        .faq-side .eyebrow {
            display: inline-block;
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 999px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
        }
        .faq-side h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .faq-side p {
            color: var(--color-text-muted);
            line-height: 1.8;
            font-size: 1rem;
            max-width: 420px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-medium);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: box-shadow 0.25s ease;
        }
        .faq-item.active {
            box-shadow: var(--shadow-card);
            border-color: rgba(29, 123, 142, 0.25);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 1.08rem;
            font-weight: 600;
            cursor: pointer;
            color: var(--color-text);
            transition: background 0.2s ease;
        }
        .faq-q:hover {
            background: var(--color-primary-light);
        }
        .faq-q .icon {
            font-size: 1rem;
            color: var(--color-primary);
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            background: var(--color-primary-light);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: all 0.25s ease;
        }
        .faq-item.active .faq-q .icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-a {
            display: none;
            padding: 0 24px 20px;
            color: var(--color-text-muted);
            font-size: 0.96rem;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .faq-item.active .faq-a {
            display: block;
            border-top: 1px solid var(--color-divider);
            padding-top: 16px;
        }
        @media (max-width: 1024px) {
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .faq-side {
                position: static;
            }
        }
        @media (max-width: 480px) {
            .faq-q {
                font-size: 1rem;
                padding: 16px;
            }
            .faq-a {
                padding: 0 16px 16px;
            }
        }

        .site-footer {
            background: #E8F0F3;
            border-top: 1px solid #cfe0e5;
            padding: 70px 0 30px;
            font-size: 0.95rem;
        }
        .footer-grid {
            row-gap: 38px;
            padding-bottom: 40px;
            border-bottom: 1px solid #cfe0e5;
            margin-bottom: 24px;
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 10px;
        }
        .footer-about {
            color: var(--color-text-muted);
            font-size: 0.92rem;
            max-width: 400px;
            line-height: 1.8;
            margin-top: 8px;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--color-text);
            letter-spacing: 0.03em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
        }
        .footer-links a {
            color: var(--color-text-muted);
            font-size: 0.92rem;
            padding: 7px 0;
            transition: all 0.2s ease;
            line-height: 1.4;
        }
        .footer-links a:hover {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .footer-contact-card {
            background: var(--color-card);
            border-radius: var(--radius-medium);
            padding: 20px;
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 14px rgba(29, 123, 142, 0.06);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            margin-bottom: 0;
            line-height: 1.55;
        }
        .footer-contact-card p i {
            color: var(--color-secondary);
            margin-top: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            text-align: center;
            padding-top: 8px;
        }
        .footer-bottom p {
            margin: 0;
        }
        @media (max-width: 640px) {
            .site-footer {
                padding: 50px 0 26px;
            }
            .footer-bottom {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 1rem;
            }
            .nav-item {
                padding: 12px 12px;
            }
        }

/* roulang page: category3 */
:root{
  --bg:#F4F8FA;
  --card:#FFFFFF;
  --primary:#1D7B8E;
  --primary-dark:#155E6D;
  --primary-soft:#E5F2F5;
  --accent:#216869;
  --accent-soft:#E1EEEE;
  --warm:#E0894B;
  --ink:#1B2A32;
  --muted:#5D7180;
  --border:rgba(29,123,142,.14);
  --line:#E5EBEF;
  --radius-lg:20px;
  --radius-md:16px;
  --shadow:0 14px 34px rgba(29,123,142,.08),0 3px 8px rgba(21,62,77,.04);
  --shadow-hover:0 18px 44px rgba(29,123,142,.14),0 6px 16px rgba(21,62,77,.06);
  --space:clamp(72px,8vw,120px);
  font-synthesis:none;
  text-rendering:optimizeLegibility;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--primary-dark)}
p{margin:0 0 1.2em}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.35;font-weight:700;color:var(--ink)}
h1,h2{letter-spacing:-.01em}
a:focus-visible,button:focus-visible{outline:3px solid rgba(29,123,142,.45);outline-offset:3px;border-radius:6px}
button{font-family:inherit}

.grid-container{max-width:1280px;width:100%;margin:0 auto;padding-left:clamp(18px,3vw,28px);padding-right:clamp(18px,3vw,28px)}
.grid-margin-x{margin-left:-14px;margin-right:-14px}
.grid-margin-x>.cell{padding-left:14px;padding-right:14px}

.sec{padding-block:var(--space)}
.section-head{margin-bottom:clamp(32px,4vw,48px)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:.875rem;
  font-weight:600;
  border-radius:999px;
  padding:7px 14px;
  line-height:1.4;
  letter-spacing:.02em;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  border:1px solid transparent;
  border-radius:12px;
  padding:.7em 1.6em;
  font-size:.95rem;
  font-weight:600;
  line-height:1.4;
  background:transparent;
  color:var(--ink);
  cursor:pointer;
  transition:background .2s,color .2s,border-color .2s,transform .2s,box-shadow .2s;
  text-align:center;
  white-space:nowrap;
  font-family:inherit;
}
.btn::before{display:none}
.btn-sm{min-height:42px;padding:.55em 1.2em;font-size:.9rem}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 18px rgba(29,123,142,.22)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:#fff;color:var(--primary-dark);border-color:rgba(29,123,142,.35)}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}

.site-header{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  padding:clamp(14px,2vw,24px) 0 clamp(8px,1.2vw,16px);
}
.header-inner{max-width:1280px;margin:0 auto;padding:0 clamp(14px,2vw,24px)}
.nav-panel{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  background:rgba(255,255,255,.96);
  border:1px solid rgba(29,123,142,.1);
  box-shadow:var(--shadow);
  border-radius:110px;
  padding:10px 12px;
  transition:box-shadow .3s;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  padding:0 8px 0 2px;
  color:var(--ink);
}
.brand:hover{color:var(--ink)}
.brand-icon{
  width:40px;
  height:40px;
  flex:0 0 40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:var(--primary);
  color:#fff;
  font-size:1.15rem;
  box-shadow:0 6px 16px rgba(29,123,142,.22);
}
.brand-text{font-size:1.22rem;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  margin-left:auto;
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-radius:14px;
  border:0;
  cursor:pointer;
  font-size:1.1rem;
  transition:background .2s,transform .2s;
}
.nav-toggle:hover{background:#d3e9ee;transform:translateY(-1px)}
.site-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
  padding:0 2px;
}
.nav-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:42px;
  padding:.45em .85em;
  border-radius:999px;
  color:#30505C;
  font-size:.9rem;
  font-weight:600;
  background:transparent;
  border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s,transform .2s;
  white-space:nowrap;
}
.nav-item i{font-size:.78rem;opacity:.85}
.nav-item:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px)}
.nav-item.active{background:var(--primary);color:#fff;box-shadow:0 6px 14px rgba(29,123,142,.20)}
.nav-cta{margin-left:auto}
.nav-cta.btn-primary{min-height:42px;padding:.5em 1.35em}

.category-hero{
  padding:clamp(28px,4vw,56px) 0 clamp(24px,3vw,40px);
  position:relative;
  overflow:hidden;
  background:var(--bg);
}
.hero-shell{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  background:rgba(255,255,255,.94);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.hero-shell::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center 30%;
  opacity:.16;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:clamp(28px,4.5vw,54px);
}
.hero-copy{flex:0 1 760px}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  color:#8495A0;
  font-size:.9rem;
  margin:0 0 18px;
}
.breadcrumb a{color:#5B7482}
.breadcrumb a:hover{color:var(--primary)}
.crumb-sep{opacity:.45;font-size:.8rem}
.hero-title{
  font-size:clamp(2rem,4.5vw,3.4rem);
  line-height:1.2;
  font-weight:800;
  margin:2px 0 17px;
  color:#17353F;
}
.hero-lead{
  max-width:720px;
  color:#3E5966;
  font-size:clamp(1rem,1.4vw,1.15rem);
  line-height:1.9;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-aside{
  flex:0 0 312px;
  max-width:100%;
  background:rgba(229,242,245,.72);
  border:1px solid rgba(29,123,142,.12);
  border-radius:20px;
  padding:24px;
}
.hero-aside-title{
  font-size:1rem;
  font-weight:700;
  color:#175C67;
  margin-bottom:8px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(29,123,142,.14);
}
.hero-aside-list{list-style:none;margin:14px 0 0;padding:0}
.hero-aside-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:8px 0;
  color:#315A66;
  font-size:.9rem;
  line-height:1.65;
}
.hero-aside-list i{color:var(--primary);margin-top:5px}

.page-intro{
  padding:clamp(28px,4.5vw,48px) 0 12px;
}
.intro-card{
  background:var(--primary-soft);
  border-radius:20px;
  padding:clamp(24px,3vw,34px) clamp(24px,4vw,50px);
  border:1px solid rgba(29,123,142,.12);
  color:#215360;
  font-size:1.06rem;
  line-height:1.95;
}
.intro-card strong{color:var(--primary-dark)}

.security-doc{
  padding:clamp(36px,5vw,54px) 0 clamp(48px,6vw,72px);
}
.doc-stage{}
.doc-main-lead{
  background:#fff;
  border-radius:22px;
  padding:clamp(24px,3.6vw,40px);
  box-shadow:var(--shadow);
  margin-bottom:34px;
  border:1px solid rgba(29,123,142,.08);
}
.page-jump{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  border-radius:16px;
  background:#fff;
  border:1px solid var(--border);
  box-shadow:0 4px 12px rgba(29,123,142,.03);
  padding:10px 12px;
  margin-bottom:34px;
}
.jump-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary-dark);
  font-weight:700;
  font-size:.9rem;
  white-space:nowrap;
}
.page-jump a{
  display:inline-flex;
  align-items:center;
  min-height:36px;
  padding:.35em .8em;
  border-radius:999px;
  background:var(--bg);
  color:#315562;
  font-size:.865rem;
  font-weight:600;
  transition:background .2s,color .2s,transform .2s;
  border:1px solid transparent;
}
.page-jump a:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateY(-1px)}

.doc-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:24px;
  box-shadow:var(--shadow);
  padding:clamp(26px,3.4vw,40px);
  margin-bottom:36px;
}
.doc-card-top{
  display:flex;
  align-items:flex-start;
  gap:16px;
  margin-bottom:18px;
}
.doc-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  flex:0 0 46px;
  background:var(--primary);
  color:#fff;
  font-weight:800;
  font-size:1.1rem;
  border-radius:14px;
  box-shadow:0 6px 14px rgba(29,123,142,.16);
}
.doc-main-title{
  margin:2px 0 4px;
  font-size:clamp(1.35rem,2vw,1.7rem);
}
.doc-kicker{color:var(--muted);font-size:.95rem}
.doc-card h4{
  font-size:1.08rem;
  margin:26px 0 10px;
  color:#1D6170;
}
.doc-text{color:#334E5B;font-size:1rem;line-height:1.95}
.doc-text strong{color:var(--primary-dark)}
.entry-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:14px;
  margin:22px 0 8px;
}
.entry-item{
  border:1px solid var(--border);
  background:var(--bg);
  border-radius:14px;
  padding:16px 18px;
  transition:transform .2s,box-shadow .2s,background .2s;
}
.entry-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);background:#fff}
.entry-item i{
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  margin-bottom:8px;
}
.entry-item p{margin:0;font-size:.9rem;color:#425C68}
.entry-item strong{display:block;color:#1A5867;font-size:.98rem}

.notice-box{
  border-left:4px solid var(--accent);
  background:var(--accent-soft);
  border-radius:0 16px 16px 0;
  padding:18px 20px;
  margin:24px 0 4px;
  font-size:.95rem;
  color:#214E4E;
}
.notice-box strong{color:var(--accent)}
.warn-box{
  border-left:4px solid var(--warm);
  background:#FCF3EA;
  border-radius:0 16px 16px 0;
  padding:18px 20px;
  margin-top:18px;
  color:#815031;
  font-size:.94rem;
}
.warn-icon{color:var(--warm);margin-right:6px}

.steps-ol{
  margin:22px 0 0;
  padding:0;
  list-style:none;
  counter-reset:step;
}
.steps-ol li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 0;
  border-bottom:1px dashed var(--line);
  counter-increment:step;
}
.steps-ol li:last-child{border-bottom:0}
.steps-ol li::before{
  content:counter(step,decimal-leading-zero);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  flex:0 0 38px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  border-radius:12px;
  font-weight:700;
  font-size:.9rem;
}
.steps-ol p{margin:0;color:#344F5C;font-size:.96rem}
.steps-ol strong{color:#143C48;font-weight:700}

.media-block{
  display:flex;
  gap:22px;
  align-items:center;
  flex-wrap:wrap;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:18px;
  margin:20px 0 6px;
  padding:18px 18px 18px 22px;
}
.media-img{
  flex:0 1 260px;
  border-radius:14px;
  overflow:hidden;
  box-shadow:0 8px 18px rgba(29,123,142,.1);
}
.media-copy{flex:1 1 260px}
.media-copy h4{margin-top:0;font-size:1.15rem}
.media-copy p{margin-bottom:.4em;color:#415C68;font-size:.95rem}

.side-col{position:relative;align-self:flex-start}
.side-inner{position:sticky;top:26px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:#fff;
  border-radius:20px;
  padding:24px;
  box-shadow:var(--shadow);
  border:1px solid var(--border);
}
.side-card-accent{
  background:var(--primary);
  color:#fff;
  border-radius:20px;
  padding:24px;
  box-shadow:0 16px 30px rgba(29,123,142,.18);
  position:relative;
  overflow:hidden;
}
.side-card-accent::before{content:"";position:absolute;right:-30px;top:-30px;width:100px;height:100px;background:rgba(255,255,255,.08);border-radius:50%}
.side-title{
  display:flex;
  gap:8px;
  align-items:center;
  font-size:1.08rem;
  font-weight:700;
  margin-bottom:16px;
  color:#1A4350;
}
.side-card-accent .side-title{color:#fff}
.side-title i{color:var(--primary-dark)}
.side-card-accent .side-title i{color:#fff}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:11px 0;
  color:#2F4C59;
  font-size:.9rem;
  border-bottom:1px solid var(--line);
  line-height:1.6;
}
.side-list li:last-child{border-bottom:0}
.side-list i{color:var(--primary);margin-top:4px;font-size:.72rem}
.side-card-accent .side-list li{border-color:rgba(255,255,255,.14);color:#E8F5F7}
.side-card-accent .side-list i{color:#fff}
.ck-item strong{display:block;font-size:.94rem}
.ck-item p{margin:.2em 0 0}
.side-card .btn{width:100%;margin:8px 0 0}
.side-mini{
  background:var(--accent-soft);
  border:1px solid rgba(33,104,105,.12);
  border-radius:18px;
  padding:18px;
  color:#184D4D;
  font-size:.88rem;
}
.side-mini p{margin:0}
.side-mini strong{color:var(--accent)}

.faq-section{
  background:#EBF3F5;
  padding:var(--space) 0;
  border-top:1px solid rgba(29,123,142,.08);
  border-bottom:1px solid rgba(29,123,142,.08);
}
.faq-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px}
.faq-aside{}
.faq-aside h2{font-size:clamp(1.6rem,2.8vw,2.3rem);margin:18px 0 12px}
.faq-aside-intro{color:#45636F;line-height:1.9;max-width:380px}
.faq-column{display:flex;flex-direction:column;gap:16px}
.faq-item{
  background:#fff;
  border-radius:16px;
  border:1px solid rgba(29,123,142,.09);
  box-shadow:0 4px 12px rgba(29,123,142,.04);
  overflow:hidden;
}
.faq-item[open]{box-shadow:var(--shadow-hover)}
.faq-item summary{
  position:relative;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:18px 22px;
  list-style:none;
  font-size:1.05rem;
  font-weight:600;
  color:var(--ink);
  transition:background .2s,color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--primary-soft);color:var(--primary-dark)}
.faq-item summary::after{
  content:"+";
  flex:0 0 32px;
  width:32px;
  height:32px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-weight:700;
  font-size:1.2rem;
  transition:transform .25s,background .2s;
}
.faq-item[open] summary::after{content:"−";background:var(--primary);color:#fff}
.faq-answer{padding:0 22px 22px;color:#47636E;font-size:.98rem;line-height:1.95}
.faq-answer p{margin:0}

.cta-section{padding:clamp(60px,7vw,92px) 0}
.cta-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:32px;
  border-radius:24px;
  padding:clamp(30px,4.5vw,56px);
  background:#fff;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.cta-box::before{
  content:"";
  position:absolute;
  right:-72px;top:-72px;
  width:240px;height:240px;
  border-radius:50%;
  background:var(--primary-soft);
  opacity:.7;
  pointer-events:none;
}
.cta-content{flex:1 1 520px;position:relative;z-index:1}
.cta-content h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:10px}
.cta-content p{color:#526F7B;max-width:620px;font-size:1rem}
.cta-link{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.cta-link small{color:var(--muted);font-size:.85em}

.site-footer{
  background:#E7EEF1;
  padding:clamp(52px,6vw,80px) 0 clamp(28px,3vw,36px);
  color:#3E5965;
  margin:0;
}
.footer-grid{gap:0}
.footer-grid .cell{margin-bottom:34px}
.footer-brand .brand{margin-bottom:10px}
.footer-about{
  color:#4E6975;
  font-size:.94rem;
  line-height:1.9;
  max-width:340px;
}
.footer-title{
  font-size:.98rem;
  margin:2px 0 14px;
  font-weight:700;
  color:#235662;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer-links a{
  color:#49636E;
  font-size:.92rem;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{color:var(--primary-dark);padding-left:4px}
.footer-contact-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
}
.footer-contact-card p{
  color:#425E6A;
  margin-bottom:12px;
  font-size:.9rem;
  line-height:1.7;
  display:flex;
  gap:8px;
}
.footer-contact-card i{color:var(--primary);margin-top:4px}
.footer-bottom{
  border-top:1px solid rgba(29,123,142,.10);
  margin-top:14px;
  padding-top:22px;
  text-align:center;
  color:#6A7F8A;
  font-size:.85rem;
}

@media (max-width:1024px){
  .hero-inner{flex-direction:column;align-items:flex-start}
  .hero-aside{flex:1 1 100%;width:100%}
  .doc-main{width:100%}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .site-nav{display:none;flex-direction:column;width:100%;align-items:stretch;padding:6px 2px 0}
  .site-nav.open{display:flex}
  .nav-item{width:100%;justify-content:flex-start;min-height:46px}
  .nav-cta{width:100%;margin-left:0;justify-content:center;margin-top:4px;border-radius:14px}
  .faq-grid{grid-template-columns:1fr}
  .media-block{flex-direction:column}
  .media-img{flex:1 1 100%;width:100%}
}
@media (max-width:640px){
  .nav-panel{border-radius:20px;padding:12px}
  .brand-text{font-size:1.05rem}
  .brand-icon{width:38px;height:38px;flex-basis:38px}
  .site-header{padding-top:10px}
  .nav-cta{width:100%}
  .hero-shell,.doc-card,.side-card,.side-card-accent,.cta-box,.intro-card,.page-jump{border-radius:16px}
  .hero-inner{padding:24px 20px}
  .side-inner{position:static}
  .security-doc{padding-top:16px}
  .doc-main-lead,.doc-card,.side-inner{gap:18px}
  .entry-grid{grid-template-columns:1fr}
  .steps-ol li{padding:12px 0}
  .footer-contact-card{padding:16px}
}