/* roulang page: index */
:root{
  --brand-primary:#1C6FB8;
  --brand-deep:#0F4D8C;
  --brand-cyan:#1D9DB5;
  --bg-site:#F5F8FC;
  --bg-card:#FFFFFF;
  --bg-soft:#EAF1F9;
  --text-primary:#172B44;
  --text-secondary:#40566E;
  --text-muted:#74879A;
  --border-line:#D9E5F0;
  --success:#1F9D6C;
  --danger:#DF4B3E;
  --warning:#E08932;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-card:0 2px 8px rgba(27,63,99,.06),0 8px 24px rgba(27,63,99,.05);
  --shadow-hover:0 6px 16px rgba(27,63,99,.10),0 18px 36px rgba(27,63,99,.08);
  --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --font-num:"Inter","Barlow",-apple-system,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  background:var(--bg-site);
  color:var(--text-primary);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
img{max-width:100%;height:auto}
button,input,select,textarea{font-family:inherit}
.container{max-width:1200px;padding-left:clamp(16px,4vw,48px);padding-right:clamp(16px,4vw,48px)}
.text-muted{color:var(--text-muted)!important}
.text-secondary-color{color:var(--text-secondary)}

/* 导航 */
.navbar-main{
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-line);
  min-height:72px;
  padding-top:0;padding-bottom:0;
  z-index:1080;
}
.navbar-main .navbar-brand{
  display:flex;align-items:center;gap:10px;
  font-weight:700;font-size:1.1rem;
  color:var(--text-primary);
  line-height:1.2;
  padding-top:0;padding-bottom:0;
  margin-right:2rem;
}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-cyan));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:1.15rem;font-weight:800;
  flex-shrink:0;
  box-shadow:0 6px 14px rgba(28,111,184,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text .brand-main{font-weight:700;font-size:1rem;color:var(--text-primary);letter-spacing:-.01em}
.navbar-main .navbar-nav{gap:.25rem;margin-left:.5rem}
.navbar-main .nav-link{
  display:flex;align-items:center;gap:.45rem;
  font-size:.95rem;font-weight:500;
  color:var(--text-secondary);
  padding:.6rem .8rem !important;
  border-radius:var(--radius-pill);
  transition:all .2s ease;
  position:relative;
}
.navbar-main .nav-link i{font-size:.8rem;color:var(--text-muted)}
.navbar-main .nav-link:hover{color:var(--brand-primary);background:rgba(28,111,184,.06)}
.navbar-main .nav-link.active{color:var(--brand-primary);font-weight:600;background:rgba(28,111,184,.08)}
.navbar-main .nav-link.active::after{
  content:"";position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--brand-primary);
}
.navbar-right{display:flex;align-items:center;gap:.65rem}
.cmd-search{
  display:flex;align-items:center;gap:.4rem;
  background:#F0F5FA;border:1px solid transparent;
  border-radius:var(--radius-pill);
  padding:.32rem .55rem .32rem .85rem;
  color:var(--text-muted);
  font-size:.875rem;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.cmd-search:hover{border-color:var(--border-line);background:#e9f0f7}
.cmd-search .key-tip{
  background:#fff;border:1px solid var(--border-line);
  border-radius:5px;padding:0 .4rem;
  font-size:.7rem;color:var(--text-muted);
  font-family:var(--font-num);
  white-space:nowrap;
}
.btn-cta{
  display:inline-flex;align-items:center;gap:.4rem;
  background:var(--brand-primary);color:#fff;
  border:0;border-radius:var(--radius-pill);
  font-weight:600;font-size:.95rem;
  padding:.5rem 1.15rem;
  transition:all .2s ease;
  box-shadow:0 4px 12px rgba(28,111,184,.20);
}
.btn-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-cta:active{transform:translateY(0)}
.btn-outline-cta{
  display:inline-flex;align-items:center;gap:.4rem;
  background:#fff;color:var(--brand-primary);
  border:1px solid var(--border-line);
  border-radius:var(--radius-pill);
  font-weight:600;font-size:.95rem;
  padding:.5rem 1.15rem;
  transition:all .2s ease;
}
.btn-outline-cta:hover{border-color:var(--brand-primary);background:rgba(28,111,184,.04);color:var(--brand-deep)}
.icon-btn{
  width:42px;height:42px;border-radius:50%;
  background:#F0F5FA;border:0;color:var(--text-secondary);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .2s ease;
}
.icon-btn:hover{background:var(--brand-primary);color:#fff}

/* Hero */
.hero-section{
  position:relative;
  background:linear-gradient(180deg,#EEF5FC 0%,var(--bg-site) 100%);
  padding:clamp(56px,7vw,96px) 0 clamp(48px,6vw,80px);
  overflow:hidden;
}
.hero-section .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.14;
  pointer-events:none;
}
.hero-section::after{
  content:"";position:absolute;right:-80px;top:20%;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(29,157,181,.14),transparent 68%);
  pointer-events:none;
}
.hero-wrap{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:.45rem;
  background:rgba(28,111,184,.08);
  color:var(--brand-primary);
  font-size:.8rem;font-weight:600;
  padding:.3rem .8rem;border-radius:var(--radius-pill);
  margin-bottom:1.2rem;
}
.hero-badge .dot-live{width:7px;height:7px;border-radius:50%;background:var(--danger);display:inline-block}
.hero-title{
  font-size:clamp(2rem,4vw,3rem);
  font-weight:700;line-height:1.25;
  letter-spacing:-.01em;
  color:var(--text-primary);
  margin-bottom:1rem;
}
.hero-title .highlight{color:var(--brand-primary)}
.hero-sub{
  font-size:1.08rem;
  color:var(--text-secondary);
  max-width:540px;
  line-height:1.75;
  margin-bottom:1.6rem;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-bottom:1.4rem}
.hero-note{
  font-size:.8rem;color:var(--text-muted);
  display:flex;align-items:center;gap:.35rem;
}
.hero-note i{color:var(--success)}
.live-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:box-shadow .25s ease,transform .25s ease;
  position:relative;
}
.live-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.live-cover{
  position:relative;
  height:180px;
  background:linear-gradient(135deg,#1D6FA8,var(--brand-cyan));
  background-image:linear-gradient(135deg,rgba(28,111,184,.86),rgba(29,157,181,.78)),url('/assets/images/coverpic/cover-1.png');
  background-size:cover;background-position:center;
}
.live-cover .live-status{
  position:absolute;top:14px;left:14px;
  background:rgba(255,255,255,.95);
  color:#DF4B3E;font-size:.75rem;font-weight:600;
  padding:.2rem .65rem;border-radius:var(--radius-pill);
  display:flex;align-items:center;gap:.35rem;
}
.live-cover .live-status::before{content:"";width:6px;height:6px;border-radius:50%;background:#DF4B3E}
.live-cover .live-tag{
  position:absolute;top:14px;right:14px;
  background:rgba(29,157,181,.15);
  color:var(--brand-cyan);font-size:.75rem;font-weight:600;
  padding:.2rem .7rem;border-radius:var(--radius-pill);
  backdrop-filter:blur(4px);
}
.live-body{padding:1.4rem 1.5rem 1.5rem}
.live-body h3{font-size:1.1rem;font-weight:650;margin-bottom:.75rem;color:var(--text-primary)}
.countdown-box{
  display:flex;gap:.55rem;margin-bottom:1rem;
}
.countdown-item{
  flex:1;text-align:center;
  background:var(--bg-soft);
  border-radius:var(--radius-md);
  padding:.5rem .2rem;
}
.countdown-num{
  font-family:var(--font-num);
  font-size:1.75rem;font-weight:700;
  color:var(--brand-primary);
  line-height:1.2;
}
.countdown-unit{font-size:.7rem;color:var(--text-muted);letter-spacing:.05em}
.live-meta-info{
  display:flex;align-items:center;gap:.5rem;
  font-size:.85rem;color:var(--text-muted);
  margin-bottom:1rem;
}
.live-meta-info .calendar-dot{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:7px;
  background:rgba(29,157,181,.12);color:var(--brand-cyan);
}
.live-points{
  list-style:none;padding:0;margin:.8rem 0 1rem;
  display:flex;flex-direction:column;gap:.5rem;
}
.live-points li{
  font-size:.88rem;color:var(--text-secondary);
  display:flex;gap:.4rem;align-items:center;
  line-height:1.5;
}
.live-points li i{color:var(--brand-cyan);font-size:.5rem}

/* 板块标题 */
.section-block{padding:clamp(56px,7vw,88px) 0}
.section-title-wrap{margin-bottom:2.6rem}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.8rem;font-weight:600;letter-spacing:.06em;
  color:var(--brand-primary);
  text-transform:uppercase;
  margin-bottom:.5rem;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;background:var(--brand-primary);border-radius:2px}
.section-h2{
  font-size:clamp(1.4rem,2.6vw,2rem);
  font-weight:650;line-height:1.3;
  color:var(--text-primary);
  margin:.25rem 0 .5rem;
  letter-spacing:-.01em;
}
.section-intro{color:var(--text-secondary);max-width:680px;font-size:.98rem}

/* 区块二：服务条目 */
.service-flow .left-col .section-h2{margin-bottom:.8rem}
.service-flow .left-col p{color:var(--text-secondary);font-size:.95rem;margin-bottom:1.4rem}
.soft-note-card{
  background:var(--bg-soft);
  border-radius:var(--radius-lg);
  padding:1.3rem 1.5rem;
  display:inline-flex;gap:1rem;align-items:center;
  max-width:340px;
}
.soft-note-card .num-big{
  font-family:var(--font-num);font-size:2rem;font-weight:700;
  color:var(--brand-primary);line-height:1;
}
.soft-note-card .num-desc{font-size:.85rem;color:var(--text-secondary);line-height:1.5}
.right-list-items{display:flex;flex-direction:column;gap:1.3rem}
.service-item{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:1.5rem;
  box-shadow:var(--shadow-card);
  transition:box-shadow .25s ease,transform .25s ease;
  border-left:3px solid transparent;
}
.service-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px);border-left-color:var(--brand-primary)}
.service-item .item-index{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-cyan));
  color:#fff;font-weight:700;font-size:1rem;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 5px 12px rgba(28,111,184,.25);
  margin-bottom:.9rem;
}
.service-item h3{font-size:1.05rem;font-weight:600;color:var(--text-primary);margin-bottom:.4rem}
.service-item p{font-size:.9rem;color:var(--text-secondary);margin-bottom:0;line-height:1.7}

/* 信息条 */
.slim-stats{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:1.8rem 2rem;
  margin:0;
}
.slim-stat{text-align:center;padding:.5rem .8rem;border-right:1px solid var(--border-line)}
.slim-stat:last-child{border-right:0}
.slim-stat .stat-icon{font-size:1.3rem;color:var(--brand-primary);margin-bottom:.2rem}
.slim-stat .stat-num{font-family:var(--font-num);font-size:1.8rem;font-weight:700;color:var(--text-primary);line-height:1.2}
.slim-stat .stat-label{font-size:.8rem;color:var(--text-muted)}

/* 资讯列表 */
.news-section{background:var(--bg-soft)}
.news-list-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:1.2rem 1.5rem;
  box-shadow:var(--shadow-card);
  margin-bottom:1rem;
  transition:box-shadow .25s ease,transform .25s ease;
}
.news-list-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.news-list-card .news-tag{
  display:inline-block;
  font-size:.72rem;font-weight:600;
  background:rgba(28,111,184,.09);
  color:var(--brand-primary);
  padding:.1rem .6rem;border-radius:var(--radius-pill);
  margin-bottom:.5rem;
}
.news-list-card h4{font-size:1.02rem;font-weight:600;color:var(--text-primary);margin-bottom:.3rem}
.news-list-card h4 a{color:var(--text-primary)}
.news-list-card h4 a:hover{color:var(--brand-primary)}
.news-excerpt{
  font-size:.875rem;color:var(--text-secondary);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;margin-bottom:.4rem;
}
.news-date{font-size:.78rem;color:var(--text-muted);font-family:var(--font-num)}
.news-side-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  height:100%;
  display:flex;flex-direction:column;
}
.news-side-card .cover-ph{
  height:190px;background-size:cover;background-position:center;
  background-image:url('/assets/images/coverpic/cover-2.png');
  background-color:var(--border-line);
}
.news-side-card .side-body{padding:1.5rem;flex:1;display:flex;flex-direction:column}
.news-side-card .side-body h4{font-size:1.1rem;font-weight:650;margin-bottom:.7rem;line-height:1.45}
.news-side-card .side-body p{font-size:.88rem;color:var(--text-secondary);flex:1}
.news-side-card .side-body .more-arrow{align-self:flex-end;color:var(--brand-primary);font-size:.85rem;display:inline-flex;align-items:center;gap:.3rem}
.section-head-link{
  font-size:.88rem;color:var(--text-secondary);
  display:inline-flex;align-items:center;gap:.35rem;
}
.section-head-link:hover{color:var(--brand-primary)}

/* 回放入口 */
.video-cover-card{
  position:relative;border-radius:var(--radius-lg);
  overflow:hidden;background-size:cover;background-position:center;
  background-image:url('/assets/images/coverpic/cover-3.webp');
  background-color:var(--border-line);
  min-height:310px;display:flex;flex-direction:column;justify-content:flex-end;
  box-shadow:var(--shadow-card);
}
.video-cover-card .play-ico{
  width:54px;height:54px;border-radius:50%;
  background:rgba(255,255,255,.95);
  color:var(--brand-primary);font-size:1.2rem;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:auto;margin-left:24px;margin-top:30px;
  box-shadow:0 6px 16px rgba(0,0,0,.14);
}
.video-cover-card .gradient-mask{
  background:linear-gradient(180deg,rgba(15,28,60,0) 30%,rgba(15,25,55,.78) 100%);
  padding:1.6rem 1.8rem;
}
.video-cover-card .tag-float{
  display:inline-block;margin-bottom:.55rem;
  background:rgba(255,255,255,.92);
  color:var(--brand-primary);font-size:.72rem;font-weight:600;
  padding:.15rem .65rem;border-radius:var(--radius-pill);
}
.video-cover-card h4{color:#fff;font-weight:650;font-size:1.15rem;margin-bottom:.25rem}
.video-cover-card p{color:rgba(255,255,255,.85);font-size:.85rem;margin-bottom:.4rem}
.video-meta{color:rgba(255,255,255,.7);font-size:.75rem}
.small-video-card{
  background:var(--bg-card);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease;
  margin-bottom:1rem;
}
.small-video-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.small-video-card .thumb-ph{
  height:120px;background-size:cover;background-position:center;
  background-color:var(--border-line);
  position:relative;
}
.small-video-card .thumb-ph i{
  position:absolute;left:16px;bottom:-14px;
  width:36px;height:36px;border-radius:50%;
  background:var(--bg-card);color:var(--brand-primary);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-card);
}
.small-video-card .sv-body{padding:1.2rem 1.2rem 1rem}
.small-video-card .sv-body h5{font-size:.9rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem}
.small-video-card .sv-body .meta-line{font-size:.75rem;color:var(--text-muted);display:flex;align-items:center;justify-content:space-between}
.small-video-card .sv-body .meta-line a{color:var(--brand-primary)}
.thumb-a{background-image:url('/assets/images/coverpic/cover-4.webp')}
.thumb-b{background-image:url('/assets/images/coverpic/cover-5.webp')}

/* 订阅 */
.subscribe-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:clamp(1.8rem,3vw,2.8rem);
  align-items:center;
}
.subscribe-card .sub-icon{
  width:48px;height:48px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-cyan));
  color:#fff;font-size:1.25rem;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:1rem;box-shadow:0 6px 16px rgba(28,111,184,.24);
}
.subscribe-card h3{font-size:clamp(1.2rem,2vw,1.5rem);font-weight:650;margin-bottom:.35rem}
.subscribe-card p{color:var(--text-secondary);font-size:.9rem;margin-bottom:0}
.sub-input{
  border:1px solid var(--border-line);
  background:#F0F5FA;
  border-radius:var(--radius-pill);
  padding:.6rem 1rem .6rem 1.4rem;
  font-size:.95rem;color:var(--text-primary);
  width:100%;
  transition:all .2s ease;
  height:48px;
}
.sub-input:focus{
  background:#fff;border-color:var(--brand-primary);
  outline:none;box-shadow:0 0 0 3px rgba(28,111,184,.12);
}
.sub-btn{
  height:48px;white-space:nowrap;
}
.sub-success{
  color:var(--success);font-size:.82rem;
  display:none;align-items:center;gap:.35rem;
  margin-top:.4rem;
}
.sub-success.show{display:flex}

/* FAQ */
.faq-wrap .accordion-item{
  border:0 !important;margin-bottom:.8rem;
  border-radius:var(--radius-md) !important;
  box-shadow:var(--shadow-card);
  background:var(--bg-card);
  overflow:hidden;
}
.faq-wrap .accordion-button{
  box-shadow:none !important;
  background:var(--bg-card);
  color:var(--text-primary);
  font-weight:600;font-size:1rem;
  border-radius:var(--radius-md) !important;
  padding:1.1rem 1.3rem;
  border-left:3px solid transparent;
  transition:all .2s ease;
}
.faq-wrap .accordion-button:not(.collapsed){
  background:var(--bg-card);
  color:var(--text-primary);border-left-color:var(--brand-primary);
}
.faq-wrap .accordion-button:focus{box-shadow:none}
.faq-wrap .accordion-button::after{
  font-family:"Font Awesome 6 Free";font-weight:900;
  content:"\2b";background-image:none;
  width:20px;height:20px;line-height:20px;
  font-size:.85rem;text-align:center;
  color:var(--brand-primary);transition:transform .2s ease;
}
.faq-wrap .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  content:"\2b";background-image:none;
}
.faq-wrap .accordion-body{
  padding:0 1.3rem 1.2rem;
  color:var(--text-secondary);
  font-size:.92rem;
  background:var(--bg-card);
  border-left:3px solid rgba(28,111,184,.08);
}

/* 底部 */
.footer-site{
  background:#EEF4FA;
  padding-top:clamp(48px,5vw,72px);
  border-top:1px solid var(--border-line);
  margin-top:clamp(40px,6vw,72px);
}
.footer-brand{font-weight:700;font-size:1.15rem;color:var(--text-primary);margin-bottom:.6rem;display:flex;align-items:center;gap:.7rem}
.footer-brand .brand-mark{width:36px;height:36px;border-radius:10px;font-size:1rem}
.footer-site p.footer-desc{font-size:.88rem;color:var(--text-secondary);max-width:340px;line-height:1.7}
.footer-site h6{font-weight:600;font-size:.92rem;color:var(--text-primary);margin-bottom:1rem}
.footer-site .footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.45rem}
.footer-site .footer-links a{font-size:.86rem;color:var(--text-secondary);transition:all .2s ease}
.footer-site .footer-links a:hover{color:var(--brand-primary);padding-left:3px}
.footer-bottom{
  border-top:1px solid var(--border-line);
  margin-top:2rem;
  padding:1.2rem 0;
}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:space-between;align-items:center}
.footer-site .copyright-text{font-size:.8rem;color:var(--text-muted)}

/* 空状态 */
.empty-state{
  background:var(--bg-card);
  border:1.5px dashed var(--border-line);
  border-radius:var(--radius-lg);
  padding:3rem 1.8rem;text-align:center;
  color:var(--text-muted);font-size:.9rem;
  margin-bottom:1rem;
}
.empty-state i{font-size:1.8rem;display:block;margin-bottom:.6rem;color:var(--border-line)}

/* 移动端 */
@media (max-width:991.98px){
  .navbar-main .navbar-collapse{
    background:#fff;
    border-bottom:1px solid var(--border-line);
    padding:1rem;
    border-radius:0 0 16px 16px;
    box-shadow:var(--shadow-card);
  }
  .navbar-main .nav-link.active::after{display:none}
  .navbar-right .d-flex{display:none}
  .navbar-right .cmd-search{display:none}
  .right-list-items{margin-top:1rem}
}
@media (max-width:767.98px){
  body{font-size:.95rem}
  .hero-title{line-height:1.25}
  .countdown-box{gap:.3rem}
  .countdown-num{font-size:1.4rem}
  .slim-stat{border-right:0;border-bottom:1px solid var(--border-line);padding:1rem 0}
  .slim-stat:last-child{border-bottom:0}
  .small-video-card{margin-bottom:.8rem}
  .subscribe-card .sub-btn{width:100%}
  .footer-bottom-inner{flex-direction:column;text-align:center}
}
@media (max-width:520px){
  .navbar-main .navbar-brand .brand-main{font-size:.88rem}
  .btn-cta,.btn-outline-cta{padding:.48rem .9rem}
}

/* roulang page: article */
:root {
            --brand-primary: #1C6FB8;
            --brand-deep: #0F4D8C;
            --brand-cyan: #1D9DB5;
            --bg-site: #F5F8FC;
            --bg-card: #FFFFFF;
            --bg-soft: #EAF1F9;
            --text-primary: #172B44;
            --text-secondary: #40566E;
            --text-muted: #74879A;
            --border-line: #D9E5F0;
            --success: #1F9D6C;
            --danger: #DF4B3E;
            --warning: #E08932;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 2px 8px rgba(27, 63, 99, .06), 0 8px 24px rgba(27, 63, 99, .05);
            --shadow-hover: 0 6px 16px rgba(27, 63, 99, .10), 0 18px 36px rgba(27, 63, 99, .08);
            --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "Inter", "Barlow", -apple-system, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: var(--font-family); background: var(--bg-site); color: var(--text-primary); line-height: 1.8; font-size: 16px; -webkit-font-smoothing: antialiased; padding-top: 72px; }
        a { text-decoration: none; color: var(--brand-primary); transition: color .2s ease; }
        a:hover { color: var(--brand-deep); }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1220px; padding-left: clamp(16px, 4vw, 48px); padding-right: clamp(16px, 4vw, 48px); }
        .navbar-main { background: rgba(255,255,255,.86); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-line); min-height: 72px; padding-top: 8px; padding-bottom: 8px; box-shadow: 0 1px 4px rgba(27,63,99,.02); }
        .navbar-main .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: nowrap; }
        .navbar-brand { display: flex; align-items: center; gap: 10px; padding: 6px 0; margin-right: 16px; }
        .navbar-brand .brand-mark { width: 42px; height: 42px; flex: 0 0 42px; border-radius: 12px; background: linear-gradient(135deg, var(--brand-primary), var(--brand-cyan)); color: #fff; font-weight: 700; font-size: 13px; letter-spacing: .5px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 10px rgba(28,111,184,.18); text-transform: uppercase; }
        .navbar-brand .brand-text { display: flex; flex-direction: column; justify-content: center; line-height: 1.2; }
        .navbar-brand .brand-main { font-weight: 700; font-size: 16px; color: var(--text-primary); letter-spacing: -.01em; white-space: nowrap; }
        .navbar-main .nav-link { color: var(--text-secondary); font-weight: 500; font-size: .9375rem; padding: 8px 16px !important; border-radius: 8px; transition: color .2s ease, background .2s ease; display: inline-flex; align-items: center; gap: 7px; }
        .navbar-main .nav-link i { font-size: .8125rem; opacity: .8; }
        .navbar-main .nav-link:hover { color: var(--brand-primary); background: rgba(28,111,184,.04); }
        .navbar-main .nav-link.active { color: var(--brand-primary); font-weight: 600; position: relative; background: rgba(28,111,184,.06); }
        .navbar-main .nav-link.active::after { content: ""; position: absolute; bottom: 2px; left: 16px; right: 16px; height: 2px; background: var(--brand-primary); border-radius: 2px; }
        .navbar-right { display: flex; align-items: center; gap: 8px; }
        .cmd-search { display: inline-flex; align-items: center; gap: 8px; background: rgba(230,238,247,.8); border: 1px solid var(--border-line); border-radius: 999px; padding: 7px 16px; font-size: .8125rem; color: var(--text-muted); cursor: pointer; transition: border-color .2s ease, background .2s ease; width: 220px; }
        .cmd-search:hover { background: #fff; border-color: var(--brand-primary); color: var(--text-secondary); }
        .cmd-search .key-tip { margin-left: auto; font-size: .6875rem; background: #E4ECF4; border: 1px solid #CFDBE8; border-radius: 5px; padding: 2px 6px; color: var(--text-muted); font-family: var(--font-num); }
        .icon-btn { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border-line); background: #fff; color: var(--text-secondary); display: inline-flex; align-items: center; justify-content: center; font-size: .875rem; cursor: pointer; transition: all .2s ease; }
        .icon-btn:hover { border-color: var(--brand-primary); color: var(--brand-primary); background: #fff; }
        .btn-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--brand-primary); color: #fff !important; border: none; border-radius: 999px; padding: 9px 22px; font-weight: 600; font-size: .875rem; cursor: pointer; transition: background .2s ease, transform .2s ease, box-shadow .2s ease; box-shadow: 0 4px 10px rgba(28,111,184,.16); }
        .btn-cta:hover { background: var(--brand-deep); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(15,77,140,.20); }
        .navbar-toggler { border: 1px solid var(--border-line); border-radius: 8px; padding: 4px 8px; }
        .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(23,43,68,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
        .article-wrap { padding: clamp(32px, 6vw, 60px) 0 clamp(28px, 5vw, 48px); }
        .article-header-stripe { background: var(--bg-soft); border-radius: 20px; padding: clamp(24px, 4vw, 44px) clamp(20px, 4vw, 48px); margin-bottom: 32px; border: 1px solid rgba(217,229,240,.5); }
        .breadcrumb { background: transparent; padding: 0; margin-bottom: 18px; font-size: .8125rem; color: var(--text-muted); display: flex; flex-wrap: wrap; gap: 4px; list-style: none; }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--brand-primary); }
        .breadcrumb .sep { padding: 0 6px; color: #B6C6D8; }
        .breadcrumb .current { color: var(--text-secondary); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 260px; }
        .article-heading-row { display: flex; align-items: flex-start; gap: 16px; }
        .heading-bar { width: 4px; flex: 0 0 4px; background: linear-gradient(180deg, var(--brand-cyan), var(--brand-primary)); border-radius: 4px; min-height: 56px; margin-top: 8px; }
        .article-title-box { flex: 1; }
        .article-title-box h1 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; line-height: 1.4; color: var(--text-primary); letter-spacing: -.01em; margin-bottom: 12px; }
        .article-cat-tag { display: inline-flex; align-items: center; gap: 6px; background: rgba(28,111,184,.10); color: var(--brand-primary); font-size: .75rem; font-weight: 600; border-radius: 999px; padding: 4px 12px; margin-bottom: 10px; }
        .article-cat-tag i { font-size: .6875rem; }
        .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .8125rem; color: var(--text-muted); }
        .article-meta .dot { width: 3px; height: 3px; background: #B6C6D8; border-radius: 50%; display: inline-block; }
        .article-meta i { font-size: .75rem; margin-right: 4px; color: #93A7BD; }
        .article-meta-source { display: inline-flex; align-items: center; gap: 4px; color: var(--text-secondary); }
        .article-body { max-width: 760px; margin: 0 auto; background: var(--bg-card); border-radius: var(--radius-lg); padding: clamp(24px, 4vw, 40px); box-shadow: var(--shadow-card); border: 1px solid rgba(217,229,240,.4); }
        .article-body img { border-radius: 10px; max-width: 100%; height: auto; margin: 12px 0; }
        .article-body h2 { font-size: 1.375rem; font-weight: 700; color: var(--text-primary); margin: 2em 0 .8em; padding-left: 12px; border-left: 3px solid var(--brand-cyan); }
        .article-body h3 { font-size: 1.125rem; font-weight: 650; color: var(--text-primary); margin: 1.6em 0 .6em; }
        .article-body p { margin-bottom: 1.2em; color: var(--text-secondary); }
        .article-body ul, .article-body ol { margin-bottom: 1.2em; padding-left: 1.2em; color: var(--text-secondary); }
        .article-body li { margin-bottom: .5em; line-height: 1.75; }
        .article-body blockquote { border-left: 3px solid var(--brand-cyan); background: var(--bg-soft); padding: 14px 18px; margin: 1.6em 0; border-radius: 0 10px 10px 0; color: var(--text-secondary); }
        .article-body a { color: var(--brand-primary); font-weight: 500; word-break: break-word; }
        .article-body figcaption { font-size: .75rem; color: var(--text-muted); text-align: center; margin-top: 4px; }
        .article-not-found { max-width: 760px; margin: 0 auto; background: var(--bg-card); border-radius: var(--radius-lg); padding: 60px 24px; text-align: center; box-shadow: var(--shadow-card); border: 1px dashed var(--border-line); }
        .article-not-found .nf-icon { font-size: 40px; color: #B6C6D8; margin-bottom: 16px; }
        .article-not-found h2 { font-size: 1.125rem; font-weight: 600; color: var(--text-primary); margin-bottom: 12px; }
        .article-not-found p { font-size: .875rem; color: var(--text-muted); margin-bottom: 20px; }
        .article-not-found .btn-back { display: inline-flex; align-items: center; gap: 6px; background: var(--brand-primary); color: #fff; border-radius: 999px; padding: 8px 22px; font-size: .875rem; border: none; transition: background .2s ease; }
        .article-not-found .btn-back:hover { background: var(--brand-deep); color: #fff; }
        .article-bottom { max-width: 760px; margin: 28px auto 0; display: flex; flex-direction: column; gap: 28px; }
        .article-pagination { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
        .pager-link { display: inline-flex; align-items: center; gap: 8px; background: var(--bg-card); border: 1px solid var(--border-line); border-radius: 999px; padding: 10px 20px; font-size: .8125rem; color: var(--text-secondary); transition: all .2s ease; max-width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .pager-link:hover { border-color: var(--brand-primary); color: var(--brand-primary); box-shadow: var(--shadow-card); }
        .pager-link .dim { color: var(--text-muted); font-size: .75rem; }
        .pager-link i { font-size: .75rem; }
        .related-block h3 { font-size: 1.1rem; font-weight: 650; color: var(--text-primary); margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
        .related-block h3::after { content: ""; flex: 1; height: 1px; background: var(--border-line); }
        .related-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
        .related-card { background: var(--bg-card); border: 1px solid rgba(217,229,240,.4); border-radius: var(--radius-md); padding: 18px; transition: all .2s ease; box-shadow: 0 2px 4px rgba(27,63,99,.02); }
        .related-card:hover { box-shadow: var(--shadow-card); transform: translateY(-3px); border-color: rgba(28,111,184,.2); }
        .related-card .rc-tag { font-size: .6875rem; background: rgba(28,111,184,.08); color: var(--brand-primary); border-radius: 999px; display: inline-block; padding: 2px 10px; margin-bottom: 10px; font-weight: 500; }
        .related-card .rc-title { font-size: .9375rem; font-weight: 600; line-height: 1.5; margin-bottom: 10px; color: var(--text-primary); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card a.rc-title:hover { color: var(--brand-primary); }
        .related-card .rc-time { font-size: .75rem; color: var(--text-muted); display: flex; align-items: center; gap: 5px; }
        .back-cat-row { text-align: center; margin-top: 24px; }
        .back-cat-row a { display: inline-block; font-size: .8125rem; color: var(--text-muted); transition: color .2s ease; padding-bottom: 2px; }
        .back-cat-row a:hover { color: var(--brand-primary); }
        .back-cat-row a i { margin-right: 4px; }
        .footer-site { background: #EEF4FA; border-top: 1px solid var(--border-line); margin-top: 40px; }
        .footer-site .container { padding-top: 48px; padding-bottom: 24px; }
        .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; font-weight: 700; font-size: 1rem; color: var(--text-primary); }
        .footer-brand .brand-mark { width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--brand-primary), var(--brand-cyan)); color: #fff; font-size: 11px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
        .footer-desc { font-size: .875rem; line-height: 1.75; color: var(--text-secondary); margin-bottom: 0; padding-right: 10px; }
        .footer-site h6 { font-size: .9375rem; font-weight: 600; color: var(--text-primary); margin-bottom: 14px; }
        .footer-links { list-style: none; padding-left: 0; display: flex; flex-direction: column; gap: 8px; }
        .footer-links li a { font-size: .875rem; color: var(--text-muted); transition: color .2s ease; display: inline-flex; align-items: center; gap: 5px; }
        .footer-links li a::before { content: ""; width: 3px; height: 3px; background: #C0D0DF; border-radius: 50%; flex: 0 0 3px; order: -1; transition: background .2s ease; }
        .footer-links li a:hover { color: var(--brand-primary); }
        .footer-links li a:hover::before { background: var(--brand-primary); }
        .footer-bottom { border-top: 1px solid rgba(217,229,240,.6); padding: 16px 0; margin-top: 32px; }
        .footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; font-size: .8125rem; color: var(--text-muted); }
        .copyright-text { display: inline-flex; align-items: center; gap: 6px; }
        @media (max-width: 991.98px) {
            body { padding-top: 64px; }
            .container { padding-left: 20px; padding-right: 20px; }
            .navbar-main { padding-top: 10px; padding-bottom: 10px; }
            .navbar-collapse { position: absolute; top: 100%; left: 0; right: 0; background: rgba(255,255,255,.98); border-bottom: 1px solid var(--border-line); padding: 16px 24px; box-shadow: 0 12px 24px rgba(27,63,99,.06); }
            .navbar-collapse .navbar-nav { gap: 6px; }
            .navbar-nav { margin-bottom: 10px; }
            .navbar-right { margin-top: 10px; justify-content: flex-start; gap: 12px; }
            .cmd-search { width: 100%; flex: 1; }
            .navbar-right .d-lg-none.icon-btn { display: none; }
            .navbar-right .btn-cta { margin-left: auto; }
            .article-header-stripe { padding: 20px; }
            .related-list { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 767.98px) {
            body { padding-top: 60px; }
            .navbar-main .navbar-brand .brand-mark { width: 36px; height: 36px; flex: 0 0 36px; font-size: 11px; }
            .navbar-main .navbar-brand .brand-main { font-size: 14px; }
            .navbar-main .btn-cta { padding: 8px 16px; font-size: .8125rem; }
            .navbar-main .btn-cta i { display: none; }
            .navbar-main .btn-cta { gap: 0; }
            .article-header-stripe { border-radius: 16px; padding: 18px; }
            .article-heading-row { gap: 10px; }
            .article-title-box h1 { font-size: 1.25rem; line-height: 1.5; }
            .article-body { padding: 20px; border-radius: 14px; }
            .article-body h2 { font-size: 1.125rem; }
            .article-body p { font-size: .9375rem; }
            .article-pagination { flex-direction: column; align-items: stretch; }
            .pager-link { justify-content: center; }
            .related-list { grid-template-columns: 1fr; }
            .pager-link { max-width: 100%; overflow: hidden; }
        }
        @media (max-width: 575px) {
            .navbar-main .navbar-brand { gap: 7px; }
            .navbar-main .navbar-brand .brand-mark { display: none; }
            .navbar-main .btn-cta { padding: 8px 14px; font-size: .75rem; }
            .navbar-main .btn-cta i { display: none; }
            .article-meta .hide-mobile { display: none; }
            .article-meta .meta-item-hide-mobile { display: none; }
        }
        @media (max-width: 420px) {
            .navbar-main .navbar-brand .brand-mark { display: none; }
            .navbar-main .navbar-brand .brand-main { font-size: 13px; white-space: nowrap; }
            .btn-cta span { display: none; }
            .btn-cta i.fa-paper-plane { margin: 0; }
            .navbar-right .btn-cta { width: 40px; padding: 8px 0; justify-content: center; }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
:root {
  --brand-primary: #1C6FB8;
  --brand-deep: #0F4D8C;
  --brand-cyan: #1D9DB5;
  --bg-site: #F5F8FC;
  --bg-card: #FFFFFF;
  --bg-soft: #EAF1F9;
  --text-primary: #172B44;
  --text-secondary: #40566E;
  --text-muted: #74879A;
  --border-line: #D9E5F0;
  --success: #1F9D6C;
  --danger: #DF4B3E;
  --warning: #E08932;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 8px rgba(27,63,99,.06), 0 8px 24px rgba(27,63,99,.05);
  --shadow-hover: 0 6px 16px rgba(27,63,99,.10), 0 18px 36px rgba(27,63,99,.08);
  --transition: all .25s ease;
}

/* ========== 基础样式 ========== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  background-color: var(--bg-site);
  color: var(--text-primary);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { text-decoration: none; transition: var(--transition); color: var(--brand-primary); }
a:hover { color: var(--brand-deep); }
ul, ol { padding-left: 1.25rem; }
p { margin-bottom: 0; }
.container { max-width: 1200px; }

/* ========== 导航栏 ========== */
.navbar-main {
  background-color: rgba(255,255,255,.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-line);
  min-height: 70px;
  padding: .85rem 0;
  z-index: 1050;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: 1.2rem;
}
.brand-mark {
  background: var(--brand-primary);
  color: #fff;
  font-size: .8125rem;
  font-weight: 800;
  letter-spacing: .05em;
  border-radius: 10px;
  padding: 6px 10px;
  line-height: 1.2;
  box-shadow: 0 4px 10px rgba(28,111,184,.18);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-main { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.02em; }
.navbar-main .nav-item {
  margin: 0 2px;
}
.navbar-main .nav-link {
  color: var(--text-secondary) !important;
  font-size: .9375rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: .55rem .9rem !important;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  position: relative;
}
.navbar-main .nav-link:not(.active):hover {
  color: var(--brand-primary) !important;
  background: rgba(28,111,184,.05);
}
.navbar-main .nav-link.active {
  background: rgba(28,111,184,.10);
}
.navbar-main .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--brand-primary);
}
.navbar-main .nav-link i {
  font-size: .875rem;
  opacity: .8;
}
.navbar-right { display: flex; align-items: center; gap: 10px; }

.cmd-search {
  background: #F0F5FA;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  color: var(--text-muted);
  font-size: .875rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  cursor: pointer;
}
.cmd-search:hover { border-color: var(--brand-primary); background: #fff; box-shadow: 0 0 0 3px rgba(28,111,184,.08); }
.cmd-search .key-tip { font-size: .75rem; background: #fff; border: 1px solid var(--border-line); border-radius: 6px; padding: 0 6px; color: var(--text-muted); font-family: "Inter", sans-serif; }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-pill);
  background: #F0F5FA;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: .9375rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
}
.icon-btn:hover { background: #fff; border-color: var(--brand-primary); color: var(--brand-primary); }

.btn-cta {
  background: var(--brand-primary);
  color: #fff !important;
  border: none;
  border-radius: var(--radius-pill);
  padding: 9px 20px;
  font-size: .875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(28,111,184,.20);
  white-space: nowrap;
}
.btn-cta:hover { background: var(--brand-deep); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(28,111,184,.25); }

.navbar-toggler {
  border: 1px solid var(--border-line) !important;
  border-radius: var(--radius-sm);
  padding: 6px 10px;
}
.navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(28,111,184,.15); }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23172B44' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ========== 面包屑与页面头部 ========== */
.section-header-divider {
  height: 1px;
  background: var(--border-line);
  margin-bottom: 0;
}
.page-head {
  background: linear-gradient(135deg, #EEF4FB 0%, #E3ECF5 60%, #EAF4F6 100%);
  padding: 64px 0 52px;
  border-bottom: 1px solid var(--border-line);
}
.breadcrumb-area { margin-bottom: 18px; }
.breadcrumb-custom {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  font-size: .8125rem;
  color: var(--text-muted);
}
.breadcrumb-custom li { display: flex; align-items: center; gap: 4px; }
.breadcrumb-custom li + li::before {
  content: "›";
  color: var(--text-muted);
  margin: 0 6px;
  font-size: 1rem;
  line-height: 1;
}
.breadcrumb-custom a { color: var(--text-muted); text-decoration: none; }
.breadcrumb-custom a:hover { color: var(--brand-primary); }
.breadcrumb-custom .current { color: var(--text-secondary); font-weight: 500; }

.page-head h1 {
  font-size: clamp(1.75rem, 2.8vw, 2.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 14px 0;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.page-head h1 .cat-label {
  display: inline-block;
  background: var(--brand-cyan);
  color: #fff;
  font-size: .875rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  vertical-align: 6px;
  margin-left: 10px;
}
.page-head .head-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin-bottom: 0;
  line-height: 1.8;
}

/* ========== 按钮 ========== */
.btn-solid {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 11px 26px;
  border: 1px solid var(--brand-primary);
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(28,111,184,.20);
  cursor: pointer;
  font-size: .9375rem;
}
.btn-solid:hover {
  background: var(--brand-deep);
  border-color: var(--brand-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(28,71,140,.22);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--brand-primary);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-pill);
  padding: 11px 26px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  font-size: .9375rem;
}
.btn-outline:hover { border-color: var(--brand-primary); color: var(--brand-deep); background: #fff; transform: translateY(-2px); box-shadow: 0 8px 18px rgba(28,111,184,.08); }

/* ========== 主按钮（页面内通用） ========== */
.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(28,111,184,.08);
  color: var(--brand-primary);
  font-size: .8125rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  line-height: 1.4;
  border: 1px solid transparent;
  white-space: nowrap;
}
.tag-badge.dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-primary);
  flex: 0 0 6px;
}
.tag-badge.cyan {
  background: rgba(29,157,181,.10);
  color: var(--brand-cyan);
}
.tag-badge.success {
  background: rgba(31,157,108,.10);
  color: var(--success);
}

/* ========== 主区域排版 ========== */
.main-area { padding: clamp(48px, 7vw, 80px) 0 clamp(32px, 5vw, 64px); }

/* ========== 卡片基础 ========== */
.card-basic {
  background: var(--bg-card);
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
}
.card-basic:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.card-body-pad { padding: 24px 24px; }

/* 分类卡 */
.special-card-hero {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: block;
  color: var(--text-primary);
}
.special-card-hero:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--text-primary); }
.special-card-hero .card-cat-image { width: 100%; height: 220px; object-fit: cover; border-radius: 0; }
.special-card-hero .card-cat-content { padding: 24px; }
.special-card-hero h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 10px; }
.special-card-hero p { color: var(--text-secondary); font-size: .9375rem; line-height: 1.7; }
.special-card-hero .tag-badge { margin-bottom: 14px; }

.special-card-mini {
  display: block;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: var(--transition);
  color: var(--text-primary);
  height: calc(50% - 12px);
}
.special-card-mini:first-child { margin-bottom: 24px; }
.special-card-mini:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--text-primary); }
.special-card-mini .card-cat-content { padding: 20px 24px; }
.special-card-mini h4 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; line-height: 1.45; }
.special-card-mini p.muted-line { color: var(--text-muted); font-size: .8125rem; margin-top: 10px; }
.special-card-mini .mini-row { display: flex; align-items: center; justify-content: space-between; }

/* 普通服务卡 */
.service-card .icon-wrap {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--brand-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  margin-bottom: 14px;
}
.service-card .icon-wrap.cyan { background: var(--brand-cyan); }
.service-card .icon-wrap.success { background: var(--success); }
.service-card .icon-wrap.deep { background: var(--brand-deep); }
.service-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 10px; }
.service-card p { font-size: .875rem; color: var(--text-secondary); line-height: 1.65; }
.service-card .text-link-like { font-size: .875rem; color: var(--brand-primary); font-weight: 600; display: inline-flex; gap: 6px; align-items: center; margin-top: 14px; }

/* ========== 大图视觉（安全提醒） ========== */
.security-banner {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background-size: cover;
  background-position: center;
  background-image: linear-gradient(90deg, #1C6FB8 0%, #0F4D8C 55%, #0B3E6F 100%);
  padding: 0 !important;
  display: flex;
  align-items: stretch;
  color: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}
.security-banner .banner-inner { padding: 50px 32px 42px; }
.security-banner .sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.14);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
  backdrop-filter: blur(2px);
  font-size: .8125rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255,255,255,.18);
  margin-bottom: 20px;
}
.security-banner h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.4;
}
.security-banner p { font-size: 1rem; opacity: .9; line-height: 1.7; color: rgba(255,255,255,.92); max-width: 720px; }
.security-banner .btn-plain-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--brand-deep);
  font-weight: 600;
  font-size: .9375rem;
  border: none;
  border-radius: var(--radius-pill);
  padding: 10px 24px;
  margin-top: 24px;
  transition: var(--transition);
}
.security-banner .btn-plain-white:hover { transform: translateY(-2px); background: #F0F5FA; color: var(--brand-primary); box-shadow: 0 8px 18px rgba(0,0,0,.2); }

/* 红色小圆点（安全提示红点） */
.security-extra-list { margin-top: 16px; }
.sec-note-item { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; }
.sec-note-item .sec-note-price-ico {
  flex: 0 0 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  margin-top: 8px;
  box-shadow: 0 0 0 3px rgba(223,75,62,.18);
}
.sec-note-item span { font-size: .95rem; color: var(--text-secondary); }
/* 安全提示区里的浅色块 */
.sec-tip-card {
  background: var(--bg-soft);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-top: 24px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.sec-tip-card i { color: var(--danger); font-size: 1.1rem; margin-top: 3px; }
.sec-tip-card p { font-size: .875rem; color: var(--text-secondary); line-height: 1.7; }

/* 右侧的大安全提示小卡片列表 */
.security-safe-tip-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 18px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--transition);
  height: 100%;
}
.security-safe-tip-card:hover { border-color: var(--brand-primary); box-shadow: var(--shadow-card); }
.security-safe-tip-card .safe-tip-ico { width: 40px; height: 40px; border-radius: var(--radius-md); background: var(--brand-cyan); color: #fff; display: flex; align-items: center; justify-content: center; flex: 0 0 40px; }
.security-safe-tip-card .safe-tip-ico.success { background: var(--success); }
.security-safe-tip-card .safe-tip-ico.orange { background: var(--warning); }
.security-safe-tip-card .safe-tip-txt { flex: 1; }
.security-safe-tip-card h5 { font-size: .8125rem; font-weight: 600; color: var(--text-primary); margin-bottom: 5px; }
.security-safe-tip-card p { font-size: .8125rem; color: var(--text-muted); line-height: 1.5; }

/* ========== FAQ 手风琴 ========== */
.faq-panel { max-width: 100%; }
.faq-title { text-align: center; margin-bottom: 32px; }
.faq-title .tag-badge { margin-bottom: 8px; }
.faq-title h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 650; margin-bottom: 8px; }

.accordion-flush .accordion-item {
  background: transparent;
  border: none;
  margin-bottom: 14px;
}
.accordion-item {
  border-radius: var(--radius-md) !important;
  border: 1px solid var(--border-line) !important;
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
}
.accordion-header {
  margin-bottom: 0;
}
.accordion-button {
  padding: 18px 22px !important;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary) !important;
  background: transparent !important;
  box-shadow: none !important;
  border-radius: var(--radius-md) !important;
  line-height: 1.5;
}
.accordion-button:focus { box-shadow: none !important; border: none; outline: none; }
.accordion-button:not(.collapsed) {
  background: rgba(28,111,184,.05) !important;
  position: relative;
  border-left: 4px solid var(--brand-primary) !important;
  transition: var(--transition);
}
.accordion-button::after {
  content: "\f067";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  background-image: none !important;
  font-size: .9375rem;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  transform: none;
  transition: transform .25s ease;
}
.accordion-button:not(.collapsed)::after {
  content: "\f068";
  transform: rotate(180deg);
}
.accordion-body { padding: 18px 22px 22px; color: var(--text-secondary); line-height: 1.8; font-size: .9375rem; background: #fff; }

/* ========== 其它 ========== */
.section-gap { padding-top: clamp(42px, 6vw, 72px); padding-bottom: clamp(42px, 6vw, 72px); }
.container-max { max-width: 1240px; margin: 0 auto; }

.section-title-block { margin-bottom: 36px; max-width: 640px; }
.section-title-block h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 650; line-height: 1.4; margin: 0 0 12px; letter-spacing: -0.02em; }

.subtitle-line {
  color: var(--text-muted);
  font-size: .9375rem;
  border-left: 3px solid var(--brand-primary);
  padding-left: 14px;
  line-height: 1.6;
}

/* 相关分类 */
.entry-chips .btn-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-pill);
  padding: 10px 22px;
  color: var(--text-secondary);
  font-size: .875rem;
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.entry-chips .btn-chip:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-2px);
}
.entry-chips .btn-chip.primary {
  background: var(--brand-primary);
  color: #fff;
  border-color: transparent;
}
.entry-chips .btn-chip.primary:hover {
  background: var(--brand-deep);
  color: #fff;
}
.entry-chips .btn-chip i { font-size: .8125rem; }

/* 图片缺失占位 */
.img-placeholder {
  background-color: #DCE8F5;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 通栏视觉 - 分类卡 */
.feature-spot-card { height: 100%; border-radius: var(--radius-lg); overflow: hidden; display: flex; align-items: stretch; background: var(--bg-card); box-shadow: var(--shadow-card); transition: var(--transition); }
.feature-spot-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

/* 分类卡片布局 */
.cat-flow .cat-hero-index { }
.cat-flow .card-side-col { display: flex; flex-direction: column; justify-content: space-between; }

/* 卡片列表 */
/* ========== 文章 相关栏目（编辑推荐） ========== */
.editorial-section {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: stretch;
  overflow: hidden;
  margin-bottom: 18px;
}

/* SEO 文本模块（真实补充） */
.seo-content-section {
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: 30px 30px 34px;
}
.seo-intro h3 { font-size: 1.5rem; font-weight: 600; }
.seo-list-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.seo-list-panel p { line-height: 1.8; color: var(--text-secondary); }

/* 快速行动 CTA 区 */
.quick-cta-gap { padding-top: 40px; padding-bottom: 40px; }
.quick-cta-inner {
  background: linear-gradient(120deg, #fff, #EAF2F9);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 46px 34px;
  text-align: center;
  align-items: center;
}
.quick-cta-inner h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 12px; color: var(--text-primary); }
.quick-cta-inner p { color: var(--text-secondary); font-size: 1rem; margin-bottom: 22px; }
.quick-cta-inner .btn-group-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ========== 页脚 ========== */
.footer-site {
  background-color: #EDF2F8;
  padding-top: clamp(56px, 6vw, 80px);
  border-top: 1px solid var(--border-line);
  color: var(--text-primary);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-desc { color: var(--text-secondary); font-size: .9375rem; line-height: 1.8; max-width: 440px; }
.footer-site h6 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: .02em;
}
ul.footer-links { list-style: none; margin: 0; padding: 0; }
ul.footer-links li { display: block; margin-bottom: 14px; }
ul.footer-links a {
  color: var(--text-secondary);
  font-size: .875rem;
  text-decoration: none;
  padding: 4px 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  line-height: 1.4;
}
ul.footer-links a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand-primary);
  opacity: .38;
  flex: 0 0 5px;
}
ul.footer-links a:hover { color: var(--brand-primary); padding-left: 6px; }
ul.footer-links a:hover::before { opacity: 1; background: var(--brand-primary); }
.footer-bottom { border-top: 1px solid #d5deeb; margin-top: clamp(40px, 5vw, 64px); padding: 18px 0 18px; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.copyright-text { font-size: .8125rem; color: var(--text-muted); }

/* 响应式断点 */
@media (max-width: 991.98px) {
  .navbar-main { background: #fff; }
  .navbar-main .nav-link.active { background: rgba(28,111,184,.10); }
  .navbar-collapse { padding-top: 14px; border-top: 1px solid var(--border-line); margin-top: 12px; }
  .navbar-main .nav-item { margin: 4px 0; }
  .navbar-right { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border-line); flex-wrap: wrap; }
}
@media (max-width: 767.98px) {
  .security-banner .banner-inner { padding: 36px 24px 32px; }
  .quick-cta-inner { padding: 24px 20px; }
  .seo-list-panel { grid-template-columns: 1fr; gap: 10px; }
  .page-head h1 { font-size: 1.625rem; }
  .page-head h1 .cat-label { font-size: .75rem; vertical-align: 4px; margin-left: 6px; padding: 3px 10px; }
}

/* roulang page: category2 */
:root {
  --brand-primary: #1C6FB8;
  --brand-deep: #0F4D8C;
  --brand-cyan: #1D9DB5;
  --bg-site: #F5F8FC;
  --bg-card: #FFFFFF;
  --bg-soft: #EAF1F9;
  --text-primary: #172B44;
  --text-secondary: #40566E;
  --text-muted: #74879A;
  --border-line: #D9E5F0;
  --success: #1F9D6C;
  --danger: #DF4B3E;
  --warning: #E08932;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 8px rgba(27, 63, 99, .06), 0 8px 24px rgba(27, 63, 99, .05);
  --shadow-hover: 0 6px 16px rgba(27, 63, 99, .10), 0 18px 36px rgba(27, 63, 99, .08);
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-num: "Inter", -apple-system, "PingFang SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-primary);
  background: var(--bg-site);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--brand-deep);
}

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

button,
input {
  font-family: inherit;
}

.container {
  max-width: 1200px;
}

.section-pad {
  padding: clamp(56px, 8vw, 96px) 0;
}

.section-pad-sm {
  padding: clamp(40px, 6vw, 72px) 0;
}

.section-pad-soft {
  padding: clamp(48px, 7vw, 88px) 0;
  background: var(--bg-soft);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--brand-primary);
  background: rgba(28, 111, 184, .10);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  margin-bottom: 14px;
}

.eyebrow i {
  font-size: .75rem;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-head.left-align {
  margin: 0 0 32px;
  text-align: left;
  max-width: 520px;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0;
}

.section-head .eyebrow {
  margin-bottom: 14px;
}

.navbar-main {
  min-height: 72px;
  background: rgba(255, 255, 255, .88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-line);
  padding: 8px 0;
}

.navbar-main .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin-right: 28px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--brand-primary);
  color: #fff;
  font-family: var(--font-num);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .02em;
  box-shadow: 0 4px 12px rgba(28, 111, 184, .22);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-main {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--text-primary);
  white-space: nowrap;
}

.navbar-main .navbar-nav {
  gap: 2px;
}

.navbar-main .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .96rem;
  font-weight: 500;
  line-height: 1;
  color: var(--text-secondary);
  border-radius: 10px;
  padding: .55rem .85rem !important;
  position: relative;
  transition: all .2s ease;
}

.navbar-main .nav-link i {
  font-size: .83rem;
  color: var(--text-muted);
  transition: color .2s ease;
}

.navbar-main .nav-link:hover {
  color: var(--brand-primary);
  background: rgba(28, 111, 184, .06);
}

.navbar-main .nav-link:hover i {
  color: var(--brand-primary);
}

.navbar-main .nav-link.active {
  color: var(--brand-primary);
  background: rgba(28, 111, 184, .10);
  font-weight: 600;
}

.navbar-main .nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand-primary);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cmd-search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #EEF3F8;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  padding: 7px 14px;
  color: var(--text-muted);
  font-size: .875rem;
  min-height: 38px;
  cursor: pointer;
  transition: all .2s ease;
}

.cmd-search:hover {
  background: #E4EDF5;
  color: var(--text-primary);
  border-color: var(--border-line);
}

.cmd-search .key-tip {
  font-family: var(--font-num);
  font-size: .72rem;
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 6px;
  padding: 1px 6px;
  color: var(--text-muted);
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border-line);
  background: #fff;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s ease;
}

.icon-btn:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  background: rgba(28, 111, 184, .04);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: var(--brand-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  padding: 9px 20px;
  font-size: .9rem;
  font-weight: 600;
  min-height: 40px;
  box-shadow: 0 4px 12px rgba(28, 111, 184, .18);
  transition: all .25s ease;
}

.btn-cta:hover {
  background: var(--brand-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(15, 77, 140, .24);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-pill);
  color: var(--text-secondary);
  padding: 9px 20px;
  font-weight: 600;
  font-size: .9rem;
  min-height: 40px;
  transition: all .25s ease;
}

.btn-ghost:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(28, 111, 184, .08);
}

.btn-ghost .arrow {
  transition: transform .2s ease;
}

.btn-ghost:hover .arrow {
  transform: translateX(3px);
}

.navbar-main .navbar-toggler {
  border: none;
  border-radius: 10px;
  color: var(--text-primary);
  padding: 6px 8px;
  outline: none;
}

.navbar-main .navbar-toggler:focus {
  box-shadow: none;
  border: none;
}

.navbar-main .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23172B44' stroke-linecap='round' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.breadcrumb-cat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.breadcrumb-cat .breadcrumb {
  margin-bottom: 0;
}

.breadcrumb-cat .breadcrumb-item a {
  color: var(--text-muted);
  font-size: .875rem;
}

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

.breadcrumb-cat .breadcrumb-item.active {
  color: var(--brand-deep);
  font-size: .875rem;
  font-weight: 500;
}

.category-head {
  background: linear-gradient(180deg, #E9F2FA 0%, #F2F7FC 78%, #F5F8FC 100%);
  padding: clamp(48px, 7vw, 82px) 0 clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--border-line);
  position: relative;
}

.category-head .cat-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--border-line);
  padding: 5px 14px;
  border-radius: 999px;
  font-size: .85rem;
  color: var(--brand-deep);
  margin-bottom: 16px;
  box-shadow: 0 2px 6px rgba(27, 63, 99, .04);
}

.category-head .cat-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 6px;
  background: var(--brand-cyan);
}

.category-head h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.28;
  margin: 10px 0 14px;
  color: var(--text-primary);
}

.category-head .head-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0;
}

.category-jump-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  padding: 22px 24px;
  margin-top: 8px;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.category-jump-card span {
  font-size: .875rem;
  color: var(--text-muted);
}

.category-jump-card .mini-cta {
  background: var(--bg-soft);
  color: var(--brand-deep);
  border: none;
  padding: 7px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .875rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s ease;
}

.category-jump-card .mini-cta:hover {
  background: var(--brand-primary);
  color: #fff;
  transform: translateX(2px);
}

.service-overview {
  background: var(--bg-card);
}

.overview-media {
  position: relative;
}

.overview-media .img-main {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.overview-media .img-float {
  position: absolute;
  right: 16px;
  bottom: 16px;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 10px 18px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--brand-deep);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.overview-media .img-float .icon {
  width: 30px;
  height: 30px;
  background: rgba(28, 111, 184, .10);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.overview-media .img-float i {
  color: var(--brand-primary);
  font-size: .8rem;
}

.overview-copy .lead-text {
  color: var(--text-secondary);
  font-size: 1.02rem;
  margin-bottom: 24px;
}

.overview-copy .stat-line {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 4vw, 56px);
  margin: 26px 0 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-line);
}

.overview-copy .stat-line .stat-item strong {
  display: block;
  font-family: var(--font-num);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--brand-primary);
  line-height: 1.2;
}

.overview-copy .stat-line .stat-item span {
  font-size: .875rem;
  color: var(--text-muted);
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0 0 8px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  font-size: .96rem;
}

.check-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--brand-primary);
  font-size: .85rem;
}

.overview-small-card {
  background: var(--bg-soft);
  border-radius: 14px;
  padding: 18px 18px;
  height: 100%;
  transition: all .25s ease;
}

.overview-small-card:hover {
  background: #fff;
  box-shadow: var(--shadow-card);
  transform: translateY(-3px);
}

.overview-small-card h3 {
  font-size: .95rem;
  font-weight: 650;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.overview-small-card h3 i {
  color: var(--brand-cyan);
}

.overview-small-card p {
  font-size: .895rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}

.service-map {
  background: var(--bg-soft);
}

.map-intro .map-note {
  color: var(--text-secondary);
}

.map-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.map-row {
  display: flex;
  align-items: center;
  gap: 18px;
  background: #fff;
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
  color: var(--text-primary);
  border: 1px solid transparent;
  transition: all .25s ease;
  position: relative;
}

.map-row:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(28, 111, 184, .18);
  color: var(--brand-deep);
}

.map-num {
  font-family: var(--font-num);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-primary);
  opacity: .7;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(28, 111, 184, .09);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.map-row strong {
  display: block;
  font-size: .98rem;
  font-weight: 650;
}

.map-row em {
  font-style: normal;
  font-size: .88rem;
  color: var(--text-muted);
  display: block;
}

.map-row .fa-arrow-right {
  margin-left: auto;
  color: var(--text-muted);
  transition: all .2s ease;
}

.map-row:hover .fa-arrow-right {
  color: var(--brand-primary);
  transform: translateX(3px);
}

.guide-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.guide-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  padding: 5px 14px;
  color: var(--text-secondary);
  font-size: .8rem;
  transition: all .2s ease;
}

.guide-chip i {
  color: var(--brand-cyan);
  font-size: .72rem;
}

.guide-chip:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.banner-service {
  position: relative;
  background-size: cover;
  background-position: center;
  color: var(--text-primary);
}

.banner-service-inner {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  min-height: 380px;
  display: flex;
  align-items: center;
  padding: clamp(28px, 5vw, 64px);
  background-size: cover;
  background-position: center;
}

.banner-service::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(245, 248, 252, 0.82);
  backdrop-filter: blur(1px);
}

.banner-service .content-relative {
  position: relative;
  z-index: 1;
}

.banner-service h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 14px;
}

.banner-service .banner-sub {
  max-width: 640px;
  color: var(--text-secondary);
  font-size: 1rem;
}

.banner-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.banner-grid .b-item {
  background: #fff;
  border-radius: 14px;
  padding: 18px 16px 16px;
  box-shadow: var(--shadow-card);
  text-align: left;
  color: var(--text-primary);
  transition: all .25s ease;
}

.banner-grid .b-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.banner-grid .b-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(28, 111, 184, .10);
  color: var(--brand-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

.banner-grid .b-item strong {
  display: block;
  font-size: .92rem;
  font-weight: 650;
  margin-bottom: 4px;
}

.banner-grid .b-item span {
  font-size: .82rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: block;
}

.split-feature {
  background: #fff;
}

.split-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: clamp(48px, 6vw, 72px);
}

.split-card:last-child {
  margin-bottom: 0;
}

.split-media {
  flex: 0 0 46%;
  max-width: 46%;
  position: relative;
}

.split-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.split-media .pic-label {
  position: absolute;
  left: 16px;
  top: 16px;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(6px);
  font-size: .8rem;
  padding: 3px 12px;
  border-radius: 999px;
  color: var(--brand-deep);
  border: 1px solid var(--border-line);
}

.split-copy {
  flex: 0 0 54%;
  max-width: 54%;
  padding: 32px clamp(24px, 5vw, 64px);
}

.split-copy.left {
  padding-left: 0;
}

.split-copy.right {
  padding-right: 0;
}

.split-copy .sub-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-cyan);
  font-size: .875rem;
  font-weight: 650;
  margin-bottom: 4px;
}

.split-copy h2 {
  font-size: clamp(1.35rem, 2.3vw, 1.85rem);
  font-weight: 650;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 14px;
}

.split-copy p {
  color: var(--text-secondary);
  font-size: .96rem;
  margin-bottom: 22px;
}

.split-points {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.split-points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-size: .93rem;
}

.split-points li i {
  color: var(--success);
  margin-top: 5px;
  font-size: .8rem;
}

.recommend-cards {
  background: var(--bg-soft);
}

.rec-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  height: 100%;
  transition: all .25s ease;
}

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

.rec-media {
  position: relative;
  overflow: hidden;
}

.rec-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform .4s ease;
}

.rec-card:hover .rec-media img {
  transform: scale(1.04);
}

.rec-media .rec-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(255, 255, 255, .92);
  border-radius: 999px;
  color: var(--brand-deep);
  font-size: .78rem;
  padding: 3px 12px;
  font-weight: 600;
  border: 1px solid var(--border-line);
}

.rec-body {
  padding: 20px 20px 22px;
}

.rec-body h3 {
  font-size: 1.02rem;
  font-weight: 650;
  line-height: 1.5;
  margin-bottom: 10px;
}

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

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

.rec-body p {
  font-size: .895rem;
  color: var(--text-secondary);
  margin: 0 0 14px;
}

.rec-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-line);
  padding-top: 14px;
  font-size: .82rem;
  color: var(--text-muted);
}

.rec-meta .link-more {
  color: var(--brand-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.faq-cat-section {
  background: var(--bg-card);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-line);
  padding: 22px 26px;
  transition: all .2s ease;
}

.faq-item:hover {
  border-left: 3px solid var(--brand-primary);
  box-shadow: var(--shadow-hover);
}

.faq-item h3 {
  font-size: 1rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-item h3 .q-icon {
  color: var(--brand-primary);
  font-size: .8rem;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(28, 111, 184, .10);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 24px;
}

.faq-item p {
  color: var(--text-secondary);
  font-size: .92rem;
  margin: 0;
  padding-left: 34px;
}

.category-next {
  background: linear-gradient(180deg, #EAF1F9 0%, #F2F7FC 100%);
  border-top: 1px solid var(--border-line);
}

.next-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 8px;
}

.next-links .btn-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  padding: 10px 22px;
  font-size: .92rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all .2s ease;
  box-shadow: var(--shadow-card);
}

.next-links .btn-inline i {
  color: var(--brand-primary);
}

.next-links .btn-inline:hover {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(28, 111, 184, .20);
}

.next-links .btn-inline:hover i {
  color: #fff;
}

.footer-site {
  background: #EEF4FA;
  border-top: 1px solid var(--border-line);
  padding-top: 64px;
}

.footer-site .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-site .footer-brand .brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.footer-desc {
  font-size: .92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 440px;
  margin-bottom: 22px;
}

.footer-site h6 {
  font-size: 1rem;
  font-weight: 650;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: .9rem;
  transition: all .2s ease;
}

.footer-links a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 5px;
  background: var(--brand-primary);
  opacity: .5;
}

.footer-links a:hover {
  color: var(--brand-deep);
}

.footer-links a:hover::before {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid var(--border-line);
  margin-top: 44px;
  padding: 18px 0;
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.copyright-text {
  font-size: .85rem;
  color: var(--text-muted);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(28, 111, 184, .28);
  outline-offset: 2px;
}

@media (max-width: 991.98px) {
  .navbar-main .navbar-brand {
    margin-right: 12px;
  }
  .navbar-main .nav-link.active::after {
    display: none;
  }
  .navbar-main .navbar-collapse {
    padding-top: 12px;
    border-top: 1px solid var(--border-line);
    margin-top: 6px;
  }
  .navbar-main .navbar-nav {
    gap: 2px;
    margin-bottom: 12px;
  }
  .navbar-right {
    width: 100%;
    padding: 8px 0 16px;
  }
  .cmd-search {
    flex: 1 1 auto;
  }
  .overview-media .img-main {
    height: 340px;
  }
  .banner-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .split-media,
  .split-copy {
    flex: 0 0 100%;
    max-width: 100%;
  }
  .split-copy.left,
  .split-copy.right {
    padding: 24px 0 0;
  }
  .split-media img {
    height: 300px;
  }
}

@media (max-width: 767.98px) {
  .navbar-main {
    padding: 6px 0;
  }
  .navbar-main .brand-mark {
    width: 36px;
    height: 36px;
    font-size: .8rem;
  }
  .brand-main {
    font-size: .98rem;
  }
  .cmd-search {
    flex: 1;
  }
  .icon-btn {
    width: 42px;
    height: 42px;
  }
  .btn-cta {
    padding: 9px 16px;
    font-size: .86rem;
  }
  .category-head {
    padding-top: 38px;
    padding-bottom: 32px;
  }
  .category-head h1 {
    font-size: clamp(1.7rem, 6vw, 2.2rem);
  }
  .category-jump-card {
    width: 100%;
    margin-top: 20px;
  }
  .overview-media .img-main {
    height: 230px;
  }
  .overview-media .img-float {
    left: 12px;
    right: 12px;
    bottom: 12px;
    justify-content: center;
  }
  .overview-copy .stat-line {
    gap: 18px;
  }
  .banner-service-inner {
    min-height: auto;
    padding: 34px 22px;
  }
  .banner-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .banner-grid .b-item {
    padding: 14px 12px;
  }
  .split-media img {
    height: 220px;
  }
  .rec-media img {
    height: 220px;
  }
  .faq-item {
    padding: 20px 18px;
  }
  .faq-item p {
    padding-left: 0;
  }
  .next-links .btn-inline {
    width: 100%;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .section-pad {
    padding: 50px 0;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .cmd-search .key-tip {
    display: none;
  }
  .navbar-right .icon-btn {
    display: none;
  }
  .overview-copy .stat-line {
    justify-content: space-between;
  }
  .banner-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category3 */
:root {
            --brand-primary: #1C6FB8;
            --brand-deep: #0F4D8C;
            --brand-cyan: #1D9DB5;
            --bg-site: #F5F8FC;
            --bg-card: #FFFFFF;
            --bg-soft: #EAF1F9;
            --text-primary: #172B44;
            --text-secondary: #40566E;
            --text-muted: #74879A;
            --border-line: #D9E5F0;
            --success: #1F9D6C;
            --warning: #E08932;
            --danger: #DF4B3E;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 8px rgba(27, 63, 99, .06), 0 8px 24px rgba(27, 63, 99, .05);
            --shadow-hover: 0 6px 16px rgba(27, 63, 99, .10), 0 18px 36px rgba(27, 63, 99, .08);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
            --font-num: "Inter", "Barlow", "SF Pro Display", -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg-site);
            color: var(--text-primary);
            font-size: 1rem;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--brand-primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--brand-deep);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1180px;
        }
        .navbar-toggler:focus,
        .btn:focus,
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(28, 111, 184, .18);
            outline: none;
        }
        .navbar-main {
            min-height: 70px;
            background: rgba(255, 255, 255, .88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-line);
            padding-top: 0;
            padding-bottom: 0;
            z-index: 1080;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-right: 20px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.06rem;
            letter-spacing: .01em;
            padding: 12px 0;
        }
        .navbar-brand:hover {
            color: var(--text-primary);
        }
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 44px;
            height: 32px;
            padding: 0 10px;
            border-radius: 20px 20px 8px 20px;
            background: var(--brand-primary);
            color: #fff;
            font-weight: 800;
            font-size: .82rem;
            letter-spacing: .06em;
        }
        .brand-text {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.15;
        }
        .brand-text .brand-main {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .navbar-main .nav-item {
            margin: 0 2px;
        }
        .navbar-main .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: .93rem;
            border-radius: 999px;
            padding: .55rem .9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s ease, background-color .2s ease;
        }
        .navbar-main .nav-link i {
            font-size: .92rem;
            color: var(--text-muted);
        }
        .navbar-main .nav-link:hover,
        .navbar-main .nav-link:focus {
            color: var(--brand-deep);
            background: var(--bg-soft);
        }
        .navbar-main .nav-link.active {
            color: var(--brand-primary);
            font-weight: 600;
            background: #EDF4FB;
        }
        .navbar-main .nav-link.active i {
            color: var(--brand-primary);
        }
        .nav-link.active::after {
            content: "";
            display: block;
            width: 18px;
            height: 3px;
            background: var(--brand-primary);
            border-radius: 99px;
            margin: 0 auto;
            position: relative;
            top: 3px;
        }
        .navbar-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: nowrap;
        }
        .cmd-search {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            min-width: 190px;
            height: 38px;
            padding: 0 8px 0 14px;
            background: #F2F6FA;
            color: var(--text-muted);
            border: 1px solid transparent;
            border-radius: 999px;
            font-size: .86rem;
            transition: all .2s ease;
        }
        .cmd-search:hover {
            background: #E8F0F7;
            color: var(--text-secondary);
            border-color: var(--border-line);
        }
        .cmd-search .key-tip {
            font-family: var(--font-num);
            font-size: .72rem;
            padding: 2px 7px;
            border: 1px solid #D8E0E8;
            border-radius: 5px;
            background: rgba(255, 255, 255, .7);
            color: var(--text-muted);
        }
        .icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid transparent;
            background: #F2F6FA;
            color: var(--text-secondary);
            font-size: .95rem;
            transition: all .2s ease;
            cursor: pointer;
        }
        .icon-btn:hover {
            background: #E5EEF6;
            color: var(--brand-primary);
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            border-radius: 999px;
            background: var(--brand-primary);
            border: 1px solid var(--brand-primary);
            color: #fff !important;
            font-size: .92rem;
            font-weight: 600;
            transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-cta:hover {
            background: var(--brand-deep);
            border-color: var(--brand-deep);
            transform: translateY(-1px);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 40px;
            padding: 0 20px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--border-line);
            color: var(--brand-primary) !important;
            font-size: .92rem;
            font-weight: 600;
            transition: background-color .2s ease, border-color .2s ease;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            border-color: var(--brand-primary);
            background: #F7FBFE;
            color: var(--brand-deep) !important;
        }
        .category-hero {
            position: relative;
            padding: clamp(32px, 5vw, 60px) 0 40px;
            background:
                linear-gradient(180deg, rgba(234, 241, 249, .96), rgba(245, 248, 252, .99) 80%),
                url('/assets/images/backpic/back-2.png') no-repeat right top;
            background-size: cover, cover;
            border-bottom: 1px solid var(--border-line);
            overflow: hidden;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-line {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            font-size: .86rem;
            color: var(--text-muted);
            margin: 0 0 20px;
            gap: 4px;
        }
        .breadcrumb-line a {
            color: var(--text-muted);
        }
        .breadcrumb-line a:hover {
            color: var(--brand-primary);
        }
        .breadcrumb-line .breadcrumb-sep {
            color: #A7B8C8;
            padding: 0 4px;
        }
        .breadcrumb-line .crumb-current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .hero-cat-h1 {
            display: flex;
            flex-wrap: wrap;
            align-items: baseline;
            gap: 12px;
            margin-bottom: 14px;
        }
        .hero-cat-h1 .cat-name {
            color: var(--text-primary);
            font-size: clamp(1.85rem, 3.8vw, 2.7rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -.01em;
        }
        .hero-cat-h1 .h1-sep {
            color: var(--brand-cyan);
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 600;
        }
        .hero-cat-h1 .brand-name-in-h1 {
            color: var(--brand-primary);
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 650;
            line-height: 1.3;
        }
        .category-hero-lead {
            max-width: 720px;
            color: var(--text-secondary);
            font-size: 1rem;
            margin: 0;
        }
        .content-section {
            padding: clamp(28px, 5vw, 56px) 0;
        }
        .section-head {
            margin-bottom: 28px;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--brand-primary);
            background: #E7F0F9;
            font-size: .85rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 10px;
        }
        .section-head h2,
        .section-title {
            font-size: clamp(1.45rem, 2.6vw, 2rem);
            font-weight: 650;
            color: var(--text-primary);
            line-height: 1.35;
            margin-bottom: 10px;
        }
        .section-head p {
            color: var(--text-secondary);
            max-width: 720px;
        }
        .text-muted-2 {
            color: var(--text-muted);
            font-size: .92rem;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .feature-main .feature-img {
            width: 100%;
            height: 245px;
            object-fit: cover;
            display: block;
            background: #DCE8F2;
        }
        .feature-body {
            padding: 24px;
        }
        .feature-body .feature-title {
            font-size: 1.3rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .feature-body p {
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: .92rem;
            color: var(--brand-primary);
        }
        .more-link i {
            transition: transform .2s ease;
            font-size: .8rem;
        }
        .more-link:hover i {
            transform: translateX(4px);
        }
        .sub-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 24px 22px;
            display: flex;
            gap: 16px;
            height: 100%;
            transition: box-shadow .25s ease, transform .25s ease;
            align-items: flex-start;
        }
        .sub-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .sub-icon {
            flex: 0 0 44px;
            height: 44px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--brand-primary);
            background: #E3EEF8;
        }
        .sub-card h3 {
            font-size: 1.04rem;
            font-weight: 650;
            color: var(--text-primary);
            margin: 0 0 5px;
            line-height: 1.45;
        }
        .sub-card p {
            color: var(--text-secondary);
            font-size: .93rem;
            margin-bottom: 0;
            line-height: 1.75;
        }
        .security-panel {
            position: relative;
            border-radius: 26px;
            padding: clamp(30px, 5vw, 52px);
            margin: clamp(16px, 4vw, 30px) 0;
            color: #fff;
            background:
                linear-gradient(115deg, rgba(12, 58, 106, .96) 0%, rgba(16, 94, 127, .92) 55%, rgba(29, 157, 181, .82) 100%),
                url('/assets/images/backpic/back-3.webp') center/cover;
            background-blend-mode: multiply;
            overflow: hidden;
        }
        .security-panel .banner-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .92rem;
            font-weight: 600;
            color: #F2F9FF;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .22);
            border-radius: 999px;
            padding: 5px 13px;
            margin-bottom: 12px;
        }
        .security-panel h2 {
            font-size: clamp(1.4rem, 2.8vw, 2rem);
            font-weight: 650;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .security-panel .panel-desc {
            color: rgba(255, 255, 255, .85);
            font-size: 1rem;
            max-width: 520px;
            margin-bottom: 0;
        }
        .security-panel .panel-item {
            background: #fff;
            border-radius: 16px;
            height: 100%;
            padding: 18px 18px 16px;
            box-shadow: 0 8px 18px rgba(8, 45, 82, .14);
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .security-panel .panel-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 24px rgba(8, 45, 82, .20);
        }
        .security-panel .panel-item-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: #E5F1FA;
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .95rem;
            margin-bottom: 13px;
        }
        .security-panel .panel-item h3 {
            font-size: .98rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 5px;
            line-height: 1.5;
        }
        .security-panel .panel-item p {
            color: var(--text-secondary);
            font-size: .85rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .security-points {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: clamp(24px, 4vw, 40px);
            height: 100%;
            transition: box-shadow .25s ease, transform .25s ease;
            border-top: 3px solid transparent;
        }
        .security-points:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-top-color: var(--brand-primary);
        }
        .security-points .sec-point-icon {
            width: 46px;
            height: 46px;
            border-radius: 15px;
            background: #E8F1FA;
            color: var(--brand-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            margin-bottom: 14px;
        }
        .security-points h3 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .security-points p {
            color: var(--text-secondary);
            font-size: .92rem;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .accordion-custom .accordion-item {
            border: 0;
            border-radius: 14px !important;
            margin-bottom: 12px;
            background: #fff;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .accordion-custom .accordion-button {
            background: #fff;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.6;
            padding: 18px 20px;
            box-shadow: none;
            border: 0;
            gap: 14px;
            transition: background-color .2s ease, color .2s ease;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-deep);
            background: #F4F8FC;
            box-shadow: inset 3px 0 0 var(--brand-primary);
        }
        .accordion-custom .accordion-button .accordion-item-title {
            flex: 1;
            padding-left: 10px;
        }
        .accordion-custom .icon-plus {
            flex: 0 0 30px;
            width: 30px;
            height: 30px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-primary);
            background: #E8F1FA;
            font-size: .9rem;
            transition: transform .25s ease, background-color .25s ease;
        }
        .accordion-custom .accordion-button:not(.collapsed) .icon-plus {
            transform: rotate(45deg);
            background: var(--brand-primary);
            color: #fff;
        }
        .accordion-custom .accordion-body {
            padding: 4px 24px 22px 42px;
            color: var(--text-secondary);
            background: #fff;
        }
        .accordion-custom .accordion-body p {
            margin-bottom: 0;
        }
        .support-cta {
            background: var(--bg-card);
            border-radius: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid #EAF1F7;
            padding: clamp(26px, 4vw, 42px);
            align-items: center;
            justify-content: space-between;
            gap: 22px;
            display: flex;
            flex-wrap: wrap;
        }
        .support-cta h2 {
            font-size: clamp(1.2rem, 2vw, 1.6rem);
            font-weight: 650;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .support-cta p {
            color: var(--text-secondary);
            margin-bottom: 0;
            max-width: 640px;
        }
        .support-cta .cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .related-block {
            background: var(--bg-soft);
            border-radius: 24px;
            padding: clamp(26px, 5vw, 46px);
            text-align: center;
        }
        .related-block .related-title {
            font-size: 1.3rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 18px;
        }
        .pill-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }
        .pill-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border-line);
            border-radius: 999px;
            padding: 10px 22px;
            color: var(--brand-primary);
            font-weight: 600;
            transition: background-color .2s ease, border-color .2s ease, box-shadow .2s ease;
            font-size: .95rem;
            box-shadow: 0 2px 6px rgba(27, 63, 99, .04);
        }
        .pill-link:hover {
            border-color: var(--brand-primary);
            background: #F7FBFE;
            box-shadow: var(--shadow-hover);
        }
        .pill-link.current {
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            color: #fff;
            cursor: default;
        }
        .footer-site {
            margin-top: clamp(40px, 7vw, 80px);
            background: #EEF4FA;
            padding-top: clamp(32px, 5vw, 48px);
            border-top: 1px solid var(--border-line);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: .9rem;
            color: var(--text-secondary);
            margin-top: 8px;
            max-width: 500px;
            line-height: 1.75;
        }
        .footer-site h6 {
            color: var(--text-primary);
            font-weight: 650;
            margin-bottom: 12px;
            letter-spacing: .01em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: .9rem;
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--brand-primary);
        }
        .footer-bottom {
            margin-top: 24px;
            padding: 16px 0;
            border-top: 1px solid #DCE6EF;
        }
        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-bottom .copyright-text {
            color: var(--text-muted);
            font-size: .86rem;
        }
        @media (max-width: 991.98px) {
            .navbar-main {
                padding-top: 0;
            }
            .navbar-main .navbar-collapse {
                background: #fff;
                border-top: 1px solid var(--border-line);
                padding: 14px 0 18px;
                margin-top: 6px;
            }
            .navbar-main .navbar-nav {
                margin-bottom: 14px;
            }
            .navbar-right {
                width: 100%;
                flex-wrap: wrap;
            }
            .navbar-right .btn-cta {
                flex: 1 1 auto;
                justify-content: center;
            }
            .cmd-search {
                min-width: 0;
                flex: 1;
            }
            .navbar-main .navbar-nav .nav-link {
                width: 100%;
                border-radius: 10px;
                padding: .55rem .9rem;
            }
            .navbar-toggler {
                border-color: #CCD9E5;
                border-radius: 10px;
                padding: 5px 10px;
            }
            .navbar-toggler:focus {
                box-shadow: 0 0 0 3px rgba(28, 111, 184, .18);
            }
            .navbar-toggler-icon {
                background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23172B44' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            }
            .brand-text .brand-main {
                white-space: normal;
            }
            .feature-main .feature-img {
                height: 190px;
            }
        }
        @media (max-width: 767.98px) {
            body {
                font-size: .95rem;
            }
            .navbar-brand {
                gap: 6px;
            }
            .brand-mark {
                min-width: 38px;
                height: 30px;
                padding: 0 8px;
                font-size: .75rem;
            }
            .category-hero {
                padding-bottom: 32px;
            }
            .hero-cat-h1 {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .hero-cat-h1 .h1-sep {
                display: none;
            }
            .category-hero-lead {
                font-size: .95rem;
            }
            .sub-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .sub-icon {
                flex: none;
            }
            .feature-body {
                padding: 20px;
            }
            .security-panel {
                padding: 28px 20px;
                border-radius: 18px;
            }
            .security-panel .panel-item {
                min-height: 0;
            }
            .support-cta {
                flex-direction: column;
                align-items: flex-start;
            }
            .support-cta .cta-group {
                width: 100%;
            }
            .support-cta .btn-cta,
            .support-cta .btn-ghost {
                flex: 1;
                justify-content: center;
            }
            .footer-bottom-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .navbar-right .icon-btn {
                display: none !important;
            }
            .navbar-right {
                gap: 8px;
            }
            .navbar-right .btn-cta {
                font-size: .85rem;
                padding: 0 14px;
                height: 38px;
                flex: 1;
            }
            .brand-main {
                font-size: .95rem;
            }
            .hero-cat-h1 .cat-name,
            .hero-cat-h1 .brand-name-in-h1 {
                font-size: 1.7rem;
            }
            .feature-body .feature-title {
                font-size: 1.12rem;
            }
            .content-section {
                padding: 28px 0;
            }
            .section-head h2,
            .section-title {
                font-size: 1.3rem;
            }
            .pill-link {
                width: 100%;
                justify-content: center;
            }
        }