/* roulang page: index */
:root{
  --primary:#2E7CF6;
  --primary-dark:#1558B0;
  --primary-soft:#EAF2FE;
  --teal:#12B5A5;
  --teal-soft:#E3F7F4;
  --amber:#F6A609;
  --amber-dark:#D98D05;
  --ink:#0F2740;
  --muted:#5B6B7F;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --border:#E3EAF3;
  --radius-xl:22px;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-xs:0 2px 8px rgba(15,39,64,.05);
  --shadow-sm:0 4px 14px rgba(15,39,64,.06);
  --shadow:0 10px 30px rgba(15,39,64,.08);
  --shadow-lg:0 16px 40px rgba(15,39,64,.12);
  --container:1240px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary-dark);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--primary);}
h1,h2,h3,h4{font-weight:700;color:var(--ink);line-height:1.35;margin:0;}
p{margin:0;}
button,input{font-family:inherit;}
button{outline:none;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(46,124,246,.45);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.nav-wrap{
  display:flex;align-items:center;gap:20px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-icon{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--primary) 0%,#4A9BFF 55%,var(--teal) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;box-shadow:0 6px 16px rgba(46,124,246,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:1.4px;text-transform:uppercase;}
.nav-menu{
  display:flex;align-items:center;gap:6px;margin:0 auto;
}
.nav-menu a{
  position:relative;
  padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:#3C4E63;
  transition:color .2s ease,background-color .2s ease;
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--primary-dark);background:var(--primary-soft);}
.nav-menu a.active{color:var(--primary-dark);background:var(--primary-soft);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.search-box{position:relative;}
.search-box input{
  width:186px;height:42px;
  padding:0 14px 0 38px;
  border:1px solid var(--border);border-radius:999px;
  background:#F8FBFF;color:var(--ink);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box input::placeholder{color:#93A3B5;}
.search-box input:focus{
  outline:none;background:#fff;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(46,124,246,.14);
}
.search-box i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#93A3B5;font-size:14px;}
.btn-entry{
  height:42px;padding:0 18px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--primary-dark);
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:7px;
  transition:all .2s ease;
}
.btn-entry:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);}
.btn-start{
  height:42px;padding:0 20px;border-radius:999px;border:1px solid transparent;
  background:var(--amber);color:#fff;font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:7px;
  transition:all .2s ease;box-shadow:0 6px 16px rgba(246,166,9,.28);
}
.btn-start:hover{background:var(--amber-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(246,166,9,.34);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;color:var(--ink);font-size:16px;
}
.offcanvas{--bs-offcanvas-width:320px;}
.offcanvas .oc-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.offcanvas .oc-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:18px;}
.offcanvas .oc-nav a{
  padding:12px 14px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;
  color:#3C4E63;background:#F8FBFF;border:1px solid var(--border);
}
.offcanvas .oc-nav a.active{color:var(--primary-dark);background:var(--primary-soft);border-color:#CFE0FB;font-weight:600;}
.offcanvas .oc-btn{display:block;width:100%;text-align:center;margin-bottom:10px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(246,249,253,.92) 0%,rgba(246,249,253,.78) 55%,rgba(246,249,253,.96) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(46,124,246,.16),rgba(46,124,246,0) 68%);
  border-radius:50%;pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:48px;align-items:center;position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--border);
  color:var(--primary-dark);font-size:13px;font-weight:600;
  box-shadow:var(--shadow-xs);margin-bottom:20px;
}
.hero-badge i{color:var(--teal);}
.hero h1{
  font-size:clamp(28px,3.4vw,44px);
  letter-spacing:-.4px;margin-bottom:18px;
}
.hero h1 .hl{color:var(--primary-dark);}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--radius-sm);
  background:var(--primary);color:#fff;font-weight:600;font-size:15px;
  border:1px solid transparent;box-shadow:0 8px 22px rgba(46,124,246,.28);
  transition:all .22s ease;
}
.btn-main:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(46,124,246,.32);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:50px;padding:0 24px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid #C9DCF9;color:var(--primary-dark);font-weight:600;font-size:15px;
  transition:all .22s ease;
}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px);}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;}
.hero-fact{display:flex;align-items:center;gap:10px;font-size:14px;color:#3C4E63;}
.hero-fact i{
  width:32px;height:32px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);color:var(--teal);font-size:14px;
}
.hero-media{position:relative;min-height:340px;}
.hero-shot{
  border-radius:var(--radius-lg);overflow:hidden;
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-lg);
}
.hero-shot img{width:100%;height:100%;object-fit:cover;}
.hero-shot-main{position:relative;z-index:2;margin-left:auto;width:78%;aspect-ratio:16/11;}
.hero-shot-sub{
  position:absolute;left:0;bottom:-18px;width:52%;aspect-ratio:4/3;z-index:3;
  border:5px solid #fff;
}
.hero-stat{
  position:absolute;right:6%;bottom:6%;z-index:4;
  background:#fff;border-radius:var(--radius-md);border:1px solid var(--border);
  padding:14px 18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px;
}
.hero-stat-num{font-size:24px;font-weight:700;color:var(--primary-dark);line-height:1;}
.hero-stat-label{font-size:12px;color:var(--muted);}

/* ---------- Metrics ---------- */
.metrics{
  margin-top:-38px;position:relative;z-index:5;
}
.metrics-inner{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.metric{padding:26px 24px;border-right:1px solid var(--border);}
.metric:last-child{border-right:none;}
.metric-num{font-size:26px;font-weight:700;color:var(--ink);letter-spacing:-.5px;}
.metric-num span{font-size:14px;font-weight:600;color:var(--teal);margin-left:4px;}
.metric-label{font-size:14px;color:var(--muted);margin-top:4px;}

/* ---------- Section ---------- */
.section{padding:84px 0;}
.section.alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;flex-wrap:wrap;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--teal);margin-bottom:10px;letter-spacing:.4px;
}
.section-kicker::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--teal);}
.section-title{font-size:clamp(22px,2.3vw,30px);margin-bottom:10px;}
.section-desc{font-size:15px;color:var(--muted);max-width:640px;}
.link-more{font-size:14px;font-weight:600;color:var(--primary-dark);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{gap:10px;color:var(--primary);}

/* ---------- Collection ---------- */
.collection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.collection-card{
  position:relative;display:block;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.collection-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#CFE0FB;}
.collection-card .cc-thumb{aspect-ratio:16/9;overflow:hidden;}
.collection-card .cc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.collection-card:hover .cc-thumb img{transform:scale(1.04);}
.cc-body{padding:22px 22px 24px;}
.cc-index{
  position:absolute;top:14px;left:14px;z-index:3;
  background:rgba(255,255,255,.94);color:var(--primary-dark);
  font-size:12px;font-weight:700;letter-spacing:.6px;
  padding:5px 11px;border-radius:999px;box-shadow:var(--shadow-xs);
}
.cc-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--primary-dark);
  background:var(--primary-soft);padding:4px 11px;border-radius:999px;margin-bottom:12px;
}
.cc-title{font-size:19px;margin-bottom:8px;}
.cc-desc{font-size:14px;color:var(--muted);margin-bottom:16px;}
.cc-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.cc-foot .go{color:var(--primary-dark);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.collection-card.card-large{grid-column:span 2;display:grid;grid-template-columns:1.05fr .95fr;}
.collection-card.card-large .cc-thumb{aspect-ratio:auto;height:100%;min-height:260px;}
.collection-card.card-large .cc-body{padding:30px 30px 28px;display:flex;flex-direction:column;justify-content:center;}
.collection-card.card-large .cc-title{font-size:23px;}

/* ---------- CMS list ---------- */
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.cms-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.cms-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#CFE0FB;}
.cms-thumb{aspect-ratio:4/3;overflow:hidden;background:#EEF4FC;}
.cms-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.cms-card:hover .cms-thumb img{transform:scale(1.04);}
.cms-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.cms-meta-top{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.cms-badge{
  font-size:12px;font-weight:600;color:var(--teal);
  background:var(--teal-soft);padding:4px 11px;border-radius:999px;
}
.cms-title{font-size:18px;line-height:1.45;margin-bottom:10px;}
.cms-title a{color:var(--ink);}
.cms-title a:hover{color:var(--primary-dark);}
.cms-excerpt{font-size:14px;color:var(--muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.cms-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);border-top:1px dashed var(--border);padding-top:14px;}
.cms-foot .go{color:var(--primary-dark);font-weight:600;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:60px 24px;
  background:#fff;border:1px dashed #CFDCEB;border-radius:var(--radius-lg);
}
.empty-state i{font-size:28px;color:#A9B9CC;margin-bottom:14px;display:block;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:16px;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);
  padding:24px 22px;position:relative;box-shadow:var(--shadow-xs);
  transition:transform .24s ease,box-shadow .24s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.step-num{
  width:36px;height:36px;border-radius:11px;background:var(--primary-soft);
  color:var(--primary-dark);font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);}

/* ---------- Recommend ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rec-item{
  display:flex;gap:14px;align-items:center;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius-md);padding:14px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rec-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#CFE0FB;}
.rec-thumb{width:74px;height:74px;border-radius:var(--radius-sm);overflow:hidden;flex:0 0 auto;background:#EEF4FC;}
.rec-thumb img{width:100%;height:100%;object-fit:cover;}
.rec-text h3{font-size:15px;line-height:1.45;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-text h3 a{color:var(--ink);}
.rec-text h3 a:hover{color:var(--primary-dark);}
.rec-text span{font-size:12.5px;color:var(--muted);}

/* ---------- Share bar ---------- */
.share-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  background:linear-gradient(120deg,#EFF6FF 0%,#E9F8F6 100%);
  border:1px solid #DBE9FA;border-radius:var(--radius-lg);
  padding:24px 28px;
}
.share-left{display:flex;align-items:center;gap:16px;}
.share-left i{
  width:46px;height:46px;border-radius:14px;background:#fff;color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--shadow-xs);
}
.share-left p{font-size:15px;color:#2A425C;}
.share-left strong{display:block;font-size:16px;color:var(--ink);margin-bottom:2px;}
.share-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-soft{
  height:44px;padding:0 20px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid #C9DCF9;color:var(--primary-dark);
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px;
  transition:all .2s ease;
}
.btn-soft:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:44px;align-items:start;}
.faq-side{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-xs);}
.faq-side h3{font-size:19px;margin-bottom:10px;}
.faq-side p{font-size:14px;color:var(--muted);margin-bottom:18px;}
.faq-side .side-line{display:flex;align-items:center;gap:10px;font-size:14px;color:#3C4E63;padding:9px 0;border-bottom:1px dashed var(--border);}
.faq-side .side-line:last-of-type{border-bottom:none;}
.faq-side .side-line i{color:var(--teal);font-size:13px;}
.accordion-item{
  border:1px solid var(--border);border-radius:var(--radius-md)!important;
  margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow-xs);
}
.accordion-button{
  font-size:16.5px;font-weight:600;color:var(--ink);background:#fff;
  padding:18px 22px;box-shadow:none!important;
}
.accordion-button:not(.collapsed){background:var(--primary-soft);color:var(--primary-dark);}
.accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--primary-dark);
  width:28px;height:28px;border-radius:9px;background-color:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease;border:1px solid var(--border);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{font-size:15px;color:#40536B;line-height:1.8;padding:6px 22px 22px;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#123A6B 0%,#1558B0 55%,#12796F 100%);
  border-radius:var(--radius-xl);padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  box-shadow:var(--shadow-lg);
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.2vw,28px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;max-width:600px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-light-solid{
  height:48px;padding:0 24px;border-radius:var(--radius-sm);border:none;
  background:#fff;color:var(--primary-dark);font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;gap:8px;transition:all .2s ease;
}
.btn-light-solid:hover{background:#EAF2FE;color:var(--primary-dark);transform:translateY(-2px);}
.btn-outline-light2{
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  background:transparent;border:1px solid rgba(255,255,255,.55);color:#fff;
  font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:8px;
  transition:all .2s ease;
}
.btn-outline-light2:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ---------- Footer ---------- */
.site-footer{background:#0F2740;color:#B9C7D8;margin-top:84px;padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand-name{color:#fff;font-size:18px;}
.footer-brand .brand-sub{color:#7C8FA6;}
.footer-brand p{font-size:14px;color:#93A6BC;margin-top:16px;max-width:320px;line-height:1.75;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col a{display:block;font-size:14px;color:#93A6BC;padding:5px 0;transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:#fff;padding-left:4px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8FA6;
}
.footer-bottom a{color:#93A6BC;}
.footer-bottom a:hover{color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .search-box input{width:150px;}
  .nav-menu a{padding:8px 11px;font-size:14.5px;}
}
@media (max-width:991.98px){
  .nav-menu,.nav-actions .btn-entry,.nav-actions .search-box{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-actions{margin-left:auto;}
  .hero{padding:48px 0 58px;}
  .hero-inner{grid-template-columns:1fr;gap:38px;}
  .hero-media{min-height:280px;max-width:520px;}
  .hero-shot-main{width:82%;}
  .metrics-inner{grid-template-columns:repeat(2,1fr);}
  .metric{border-bottom:1px solid var(--border);}
  .metric:nth-child(2n){border-right:none;}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:none;}
  .collection-grid{grid-template-columns:repeat(2,1fr);}
  .collection-card.card-large{grid-column:span 2;grid-template-columns:1fr;}
  .collection-card.card-large .cc-thumb{aspect-ratio:16/9;min-height:auto;}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .rec-grid{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px;}
  .section{padding:64px 0;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .container-x{padding:0 16px;}
  .hero{padding:38px 0 46px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn-main,.hero-cta .btn-ghost{width:100%;justify-content:center;}
  .hero-facts{gap:16px;}
  .hero-media{min-height:240px;}
  .hero-shot-main{width:100%;}
  .hero-shot-sub{width:56%;bottom:-14px;border-width:4px;}
  .hero-stat{right:2%;bottom:2%;padding:11px 14px;}
  .hero-stat-num{font-size:20px;}
  .metrics-inner{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--border);}
  .metric:last-child{border-bottom:none;}
  .collection-grid,.cms-grid,.steps,.rec-grid{grid-template-columns:1fr;}
  .collection-card.card-large{grid-column:span 1;}
  .share-bar{padding:20px;}
  .share-actions{width:100%;}
  .share-actions .btn-soft{flex:1;justify-content:center;}
  .cta-band{padding:32px 22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions a{flex:1;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 22px;margin-top:60px;}
  .section{padding:52px 0;}
}

/* roulang page: article */
:root{
  --brand:#2E7CF6;
  --brand-dark:#1558B0;
  --brand-soft:#E8F1FE;
  --ink:#0F2740;
  --teal:#12B5A5;
  --teal-soft:#E3F7F4;
  --amber:#F6A609;
  --amber-dark:#D98E04;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --muted:#5B6B7F;
  --radius-xs:10px;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:20px;
  --shadow-xs:0 4px 14px rgba(15,39,64,.05);
  --shadow-sm:0 8px 24px rgba(15,39,64,.07);
  --shadow:0 10px 30px rgba(15,39,64,.08);
  --shadow-lg:0 16px 40px rgba(15,39,64,.12);
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-dark);text-decoration:none;transition:color .18s ease,background-color .18s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.35;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(46,124,246,.35);outline-offset:2px}
.container-x{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(15,39,64,.08)}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--teal));
  color:#fff;font-size:18px;
  box-shadow:0 8px 18px rgba(46,124,246,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.brand-sub{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-menu a{
  position:relative;
  padding:10px 14px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
}
.nav-menu a:hover{color:var(--brand-dark);background:var(--brand-soft)}
.nav-menu a.active{color:var(--brand-dark);font-weight:600;background:var(--brand-soft)}
.nav-menu a.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:2px;width:20px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;
  background:#fff;min-width:210px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box i{color:var(--muted);font-size:14px}
.search-box input{
  border:0;outline:0;background:transparent;width:100%;
  font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:#93A2B4}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(46,124,246,.14)}
.btn-entry,.btn-start{
  display:inline-flex;align-items:center;gap:7px;
  height:42px;padding:0 18px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-entry{color:var(--brand-dark);background:var(--brand-soft)}
.btn-entry:hover{background:#D9E8FD;color:var(--brand-dark);transform:translateY(-1px)}
.btn-start{color:#fff;background:var(--amber);box-shadow:0 8px 18px rgba(246,166,9,.28)}
.btn-start:hover{background:var(--amber-dark);color:#fff;transform:translateY(-2px)}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  font-size:16px;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:#CFE0FA}
/* ---------- offcanvas drawer ---------- */
.nav-drawer{width:330px;border:0}
.nav-drawer .offcanvas-header{
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.drawer-title{font-weight:700;font-size:16px}
.btn-close-custom{
  width:38px;height:38px;border-radius:var(--radius-xs);
  border:1px solid var(--line);background:#fff;color:var(--ink);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin:18px 0}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--radius-sm);
  color:var(--ink);font-weight:500;background:#F8FBFF;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-dark)}
.drawer-actions{display:flex;flex-direction:column;gap:10px}
.drawer-actions .btn-entry,.drawer-actions .btn-start{justify-content:center;height:46px}
.search-box-mobile{width:100%;min-width:0;margin-bottom:6px}
/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:44px 0 40px;
  background-image:linear-gradient(180deg,rgba(246,249,253,.93),rgba(246,249,253,.99)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:18px;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand-dark)}
.crumbs .sep{color:#B9C6D6}
.crumbs .now{color:var(--brand-dark);font-weight:500}
.article-hero h1{
  font-size:clamp(26px,3.2vw,42px);
  font-weight:700;
  max-width:940px;
  margin-bottom:18px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.meta-item{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.meta-item i{color:var(--brand);font-size:12px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;
}
.badge-teal{background:var(--teal-soft);color:#0B8478}
/* ---------- layout ---------- */
.article-main{padding:52px 0 72px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 312px;
  gap:34px;
  align-items:start;
}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-xs);
}
.article-card{padding:34px 38px 40px}
.article-body{
  max-width:840px;
  font-size:16.5px;
  line-height:1.9;
  color:#1C3A5A;
}
.article-body > * + *{margin-top:1.15em}
.article-body p{margin:0}
.article-body h2{
  font-size:clamp(21px,2.2vw,27px);
  margin-top:1.9em;
  padding-left:14px;
  border-left:4px solid var(--brand);
  scroll-margin-top:96px;
}
.article-body h3{
  font-size:20px;
  margin-top:1.6em;
  color:var(--ink);
  scroll-margin-top:96px;
}
.article-body h4{font-size:17px;margin-top:1.4em}
.article-body ul,.article-body ol{padding-left:1.35em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.5em 0}
.article-body li::marker{color:var(--brand)}
.article-body a{color:var(--brand-dark);border-bottom:1px solid rgba(46,124,246,.35)}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.article-body img{
  border-radius:14px;
  box-shadow:var(--shadow-sm);
  margin:1.4em auto;
}
.article-body figure{margin:1.4em 0}
.article-body figcaption{
  text-align:center;font-size:13.5px;color:var(--muted);margin-top:10px;
}
.article-body blockquote{
  margin:1.4em 0;
  padding:16px 20px;
  border-left:4px solid var(--brand);
  background:#F4F8FE;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#28496B;
  font-size:15.5px;
}
.article-body code{
  background:#EEF4FC;color:var(--brand-dark);
  padding:2px 7px;border-radius:6px;font-size:14.5px;
}
.article-body pre{
  background:#0F2740;color:#E6EFFB;
  padding:18px 20px;border-radius:var(--radius-sm);overflow:auto;
}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:#F4F8FE;font-weight:600;color:var(--ink)}
.article-body tr:last-child td{border-bottom:0}
.article-body strong{color:var(--ink);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
/* ---------- sidebar ---------- */
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{padding:22px 22px 24px}
.side-title{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:700;margin-bottom:14px;
}
.side-title i{color:var(--brand)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow:auto}
.toc-list a{
  display:block;padding:8px 12px;border-radius:var(--radius-xs);
  font-size:14px;color:var(--muted);line-height:1.5;
  border-left:2px solid transparent;
}
.toc-list a:hover{color:var(--brand-dark);background:var(--brand-soft);border-left-color:var(--brand)}
.rel-list{display:flex;flex-direction:column;gap:14px}
.rel-item{display:flex;gap:12px;align-items:flex-start}
.rel-thumb{
  width:76px;height:58px;flex:0 0 76px;
  border-radius:var(--radius-xs);overflow:hidden;background:#EAF1FA;
}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body h5{font-size:14.5px;font-weight:600;line-height:1.5;margin-bottom:4px}
.rel-body h5 a{color:var(--ink)}
.rel-body h5 a:hover{color:var(--brand)}
.rel-body span{font-size:12.5px;color:var(--muted)}
.side-cta{
  padding:22px;
  border-radius:var(--radius-lg);
  background:linear-gradient(140deg,#EAF3FF,#E6F7F4);
  border:1px solid #D8E8FB;
}
.side-cta h4{font-size:16px;margin-bottom:8px}
.side-cta p{font-size:14px;color:var(--muted);margin-bottom:16px}
/* ---------- buttons ---------- */
.btn-primary-x,.btn-ghost-x,.btn-soft-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary-x{background:var(--brand);color:#fff;box-shadow:0 10px 22px rgba(46,124,246,.26)}
.btn-primary-x:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(46,124,246,.3)}
.btn-ghost-x{background:#fff;color:var(--brand-dark);border-color:#CFE0FA}
.btn-ghost-x:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px)}
.btn-soft-x{background:#F1F5FA;color:var(--ink);border-color:var(--line)}
.btn-soft-x:hover{background:#E6EDF6;transform:translateY(-2px)}
.btn-block-x{width:100%}
/* ---------- tag row ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:9px;align-items:center;
  margin-top:28px;padding-top:22px;border-top:1px dashed var(--line);
}
.tag-row .label{font-size:13.5px;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  background:#F4F8FE;border:1px solid var(--line);
  font-size:13px;color:var(--brand-dark);font-weight:500;
}
.tag:hover{background:var(--brand-soft);border-color:#CFE0FA}
/* ---------- empty state ---------- */
.empty-article{
  text-align:center;padding:56px 24px;
}
.empty-article i{
  font-size:38px;color:#B9C6D6;margin-bottom:16px;display:block;
}
.empty-article h2{font-size:22px;margin-bottom:10px}
.empty-article p{color:var(--muted);max-width:520px;margin:0 auto 24px}
/* ---------- related section ---------- */
.section{padding:0 0 72px}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px;margin-bottom:26px;
}
.section-head h2{font-size:clamp(21px,2.3vw,28px)}
.section-head p{font-size:15px;color:var(--muted);margin-top:6px}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.rel-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-xs);
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D3E3FA}
.rel-card .thumb{aspect-ratio:4/3;overflow:hidden;background:#EAF1FA}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:17.5px;line-height:1.5}
.rel-card p{font-size:14px;color:var(--muted);flex:1}
.rel-card .foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.rel-card .more{color:var(--brand-dark);font-weight:600}
/* ---------- share bar ---------- */
.share-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  padding:22px 26px;
  background:linear-gradient(120deg,#EEF5FF,#E9F8F5);
  border:1px solid #D9E8FB;
  border-radius:var(--radius-lg);
  margin-bottom:56px;
}
.share-bar .icon{
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;flex-shrink:0;
  background:#fff;color:var(--brand);font-size:18px;box-shadow:var(--shadow-xs);
}
.share-bar .txt{flex:1;min-width:220px}
.share-bar .txt h3{font-size:16.5px;margin-bottom:4px}
.share-bar .txt p{font-size:14px;color:var(--muted)}
.share-actions{display:flex;flex-wrap:wrap;gap:10px}
.share-actions .btn-soft-x,.share-actions .btn-primary-x{min-height:42px;padding:0 18px;font-size:14px}
/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-x .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--radius) !important;
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-xs);
}
.accordion-x .accordion-button{
  font-size:17px;font-weight:600;color:var(--ink);
  background:#fff;padding:18px 22px;box-shadow:none;
}
.accordion-x .accordion-button:not(.collapsed){
  background:var(--brand-soft);color:var(--brand-dark);
}
.accordion-x .accordion-button:focus{box-shadow:0 0 0 3px rgba(46,124,246,.18)}
.accordion-x .accordion-body{
  padding:4px 22px 20px;
  font-size:15.5px;line-height:1.8;color:#2A4A6B;
}
/* ---------- footer ---------- */
.site-footer{
  background:#0F2740;
  color:#C7D6E8;
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:34px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:#8FA6C0}
.footer-brand p{font-size:14px;line-height:1.8;color:#9FB4CC;max-width:380px}
.footer-col h4{
  font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;
}
.footer-col a{
  display:block;font-size:14px;color:#9FB4CC;padding:5px 0;
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:22px;font-size:13px;color:#8299B3;
}
/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-menu a{padding:10px 10px;font-size:14px}
  .search-box{min-width:170px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1080px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side-stack{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .search-box{display:none}
  .btn-entry,.btn-start{display:none}
  .nav-toggle{display:inline-grid;place-items:center}
  .article-card{padding:26px 22px 30px}
  .article-body{font-size:16px}
  .article-main{padding:36px 0 56px}
}
@media (max-width:767.98px){
  .nav-wrap{min-height:64px;gap:12px}
  .brand-name{font-size:15.5px}
  .brand-sub{display:none}
  .article-hero{padding:30px 0 28px}
  .article-hero h1{font-size:clamp(22px,6vw,30px)}
  .rel-grid{grid-template-columns:1fr}
  .share-bar{padding:18px}
  .share-actions{width:100%}
  .share-actions a,.share-actions button{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .section{padding-bottom:52px}
}
@media (max-width:519.98px){
  .container-x{padding:0 16px}
  .article-card{padding:22px 16px 26px}
  .article-body{font-size:15.5px;line-height:1.85}
  .btn-primary-x,.btn-ghost-x,.btn-soft-x{width:100%}
  .meta-item{font-size:12.5px;padding:5px 12px}
}

/* roulang page: category1 */
:root{
  --c-primary:#2E7CF6;
  --c-primary-dark:#1558B0;
  --c-ink:#0F2740;
  --c-teal:#12B5A5;
  --c-amber:#F6A609;
  --c-bg:#F6F9FD;
  --c-card:#FFFFFF;
  --c-border:#E3EAF3;
  --c-muted:#5B6B7F;
  --c-tint:#EDF3FE;
  --r-card:18px;
  --r-btn:12px;
  --sh-card:0 10px 30px rgba(15,39,64,.08);
  --sh-hover:0 16px 40px rgba(15,39,64,.12);
  --sp-section:88px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-dark);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(46,124,246,.35);outline-offset:2px;border-radius:8px;}

.container-x{max-width:1260px;margin:0 auto;padding:0 22px;width:100%;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 26px rgba(15,39,64,.09);}
.nav-wrap{display:flex;align-items:center;gap:22px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-icon{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;
  background:var(--c-primary);color:#fff;font-size:17px;
  box-shadow:0 6px 16px rgba(46,124,246,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;color:var(--c-ink);}
.brand-sub{font-size:10.5px;color:var(--c-muted);letter-spacing:.14em;text-transform:uppercase;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-menu a{
  position:relative;padding:9px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--c-ink);
}
.nav-menu a:hover{background:var(--c-tint);color:var(--c-primary-dark);}
.nav-menu a.active{color:var(--c-primary-dark);font-weight:600;background:var(--c-tint);}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:9px;height:42px;padding:0 15px;
  background:#F1F5FB;border:1px solid var(--c-border);border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box i{color:var(--c-muted);font-size:14px;}
.search-box input{
  border:0;background:transparent;outline:none;width:142px;
  font-size:14px;color:var(--c-ink);
}
.search-box input::placeholder{color:#94A3B8;}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(46,124,246,.16);}
.btn-entry,.btn-start{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;
  border-radius:var(--r-btn);font-size:14.5px;font-weight:600;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.btn-entry{color:var(--c-primary-dark);background:#fff;border:1px solid #CFE0FB;}
.btn-entry:hover{background:var(--c-tint);transform:translateY(-2px);}
.btn-start{color:#fff;background:var(--c-amber);box-shadow:0 8px 18px rgba(246,166,9,.28);}
.btn-start:hover{background:#DE9506;color:#fff;transform:translateY(-2px);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-border);border-radius:12px;
  background:#fff;color:var(--c-ink);align-items:center;justify-items:center;font-size:16px;
}
.offcanvas{border-left:1px solid var(--c-border);}
.offcanvas-header{border-bottom:1px solid var(--c-border);padding:18px 22px;}
.offcanvas-body{padding:22px;}
.drawer-search{width:100%;margin-bottom:18px;}
.drawer-search input{width:100%;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  padding:13px 15px;border-radius:12px;font-size:15.5px;font-weight:500;color:var(--c-ink);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--c-tint);color:var(--c-primary-dark);}
.drawer-nav a.active{background:var(--c-tint);color:var(--c-primary-dark);font-weight:600;border-color:#D7E5FB;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;}
.drawer-actions a{width:100%;height:46px;justify-content:center;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:70px 0 82px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,249,253,.95) 0%,rgba(246,249,253,.90) 55%,rgba(246,249,253,.96) 100%);
}
.hero .container-x{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid #D7E5FB;color:var(--c-primary-dark);
  font-size:13.5px;font-weight:600;margin-bottom:20px;
}
.hero-eyebrow i{color:var(--c-teal);}
.hero h1{font-size:clamp(28px,3.6vw,46px);line-height:1.2;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--c-primary-dark);}
.hero-lead{font-size:17px;color:var(--c-muted);max-width:560px;margin-bottom:14px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 30px;}
.point-chip{
  display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-border);font-size:13.5px;color:var(--c-muted);
}
.point-chip i{color:var(--c-primary);}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary-x{background:var(--c-primary);color:#fff;box-shadow:0 10px 22px rgba(46,124,246,.26);}
.btn-primary-x:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(21,88,176,.28);}
.btn-ghost-x{background:#fff;color:var(--c-primary-dark);border-color:#CFE0FB;}
.btn-ghost-x:hover{background:var(--c-tint);transform:translateY(-2px);}
.btn-amber-x{background:var(--c-amber);color:#fff;box-shadow:0 10px 22px rgba(246,166,9,.28);}
.btn-amber-x:hover{background:#DE9506;color:#fff;transform:translateY(-2px);}
.btn-line-x{background:transparent;color:var(--c-primary-dark);border-color:#CFE0FB;}
.btn-line-x:hover{background:#fff;border-color:var(--c-primary);}

.hero-visual{position:relative;}
.hero-shot{
  border-radius:22px;overflow:hidden;border:1px solid var(--c-border);
  box-shadow:var(--sh-card);background:#fff;aspect-ratio:16/11;
}
.hero-shot img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:-18px;bottom:-24px;background:#fff;border:1px solid var(--c-border);
  border-radius:16px;padding:16px 18px;box-shadow:var(--sh-hover);display:flex;gap:14px;align-items:center;
}
.hero-float .fl-num{font-size:24px;font-weight:700;color:var(--c-primary-dark);line-height:1;}
.hero-float .fl-txt{font-size:13px;color:var(--c-muted);line-height:1.4;}
.hero-kpis{
  position:absolute;right:-14px;top:-20px;background:#fff;border:1px solid var(--c-border);
  border-radius:16px;padding:12px 16px;box-shadow:var(--sh-card);
}
.hero-kpis span{display:block;font-size:12.5px;color:var(--c-muted);}
.hero-kpis strong{font-size:15px;color:var(--c-ink);}

/* ============ Sections ============ */
.section{padding:var(--sp-section) 0;}
.section-alt{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-tag{
  display:inline-block;padding:5px 13px;border-radius:999px;background:var(--c-tint);
  color:var(--c-primary-dark);font-size:13px;font-weight:600;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--c-muted);font-size:16px;}

/* Timeline */
.timeline{display:grid;gap:18px;}
.step-card{
  display:grid;grid-template-columns:66px 1fr;gap:22px;align-items:flex-start;
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D7E5FB;}
.step-num{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  font-size:17px;font-weight:700;color:#fff;background:var(--c-primary);
}
.step-card:nth-child(2) .step-num{background:var(--c-primary-dark);}
.step-card:nth-child(3) .step-num{background:var(--c-teal);}
.step-card:nth-child(4) .step-num{background:#1E3A5F;}
.step-body h3{font-size:19px;margin-bottom:8px;}
.step-body p{color:var(--c-muted);font-size:15.5px;margin-bottom:10px;}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;}
.mini-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--c-primary-dark);
  background:var(--c-tint);border-radius:999px;padding:5px 12px;font-weight:500;
}
.mini-badge.teal{color:#0B7C71;background:#E4F7F5;}
.mini-badge.amber{color:#9A6703;background:#FDF3DE;}

/* Table-ish compare */
.table-shell{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
}
.table-scroll{overflow-x:auto;}
table.cmp{width:100%;border-collapse:collapse;min-width:720px;}
table.cmp thead th{
  background:#F2F7FE;color:var(--c-ink);font-size:14.5px;font-weight:600;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--c-border);white-space:nowrap;
}
table.cmp tbody td{
  padding:17px 22px;border-bottom:1px solid #EEF3FA;font-size:15px;color:var(--c-muted);vertical-align:top;
}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp tbody tr:hover td{background:#FAFCFF;}
table.cmp td:first-child{color:var(--c-ink);font-weight:600;}

/* Issue grid */
.issue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.issue-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform .25s ease,box-shadow .25s ease;
}
.issue-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.issue-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:var(--c-tint);color:var(--c-primary-dark);font-size:17px;margin-bottom:16px;
}
.issue-card h3{font-size:17px;margin-bottom:8px;}
.issue-card p{font-size:14.8px;color:var(--c-muted);}

/* Checklist */
.check-shell{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:center;
  background:linear-gradient(180deg,#FFFFFF 0%,#F7FBFF 100%);
  border:1px solid var(--c-border);border-radius:22px;padding:38px;box-shadow:var(--sh-card);
}
.check-copy h2{font-size:clamp(21px,2.2vw,28px);margin-bottom:14px;}
.check-copy p{color:var(--c-muted);font-size:15.6px;}
.check-list{display:grid;gap:12px;}
.check-item{
  display:flex;gap:13px;align-items:flex-start;background:#fff;border:1px solid var(--c-border);
  border-radius:14px;padding:15px 18px;font-size:15px;color:var(--c-ink);
  transition:border-color .2s ease,transform .2s ease;
}
.check-item:hover{border-color:#CFE0FB;transform:translateX(3px);}
.check-item i{color:var(--c-teal);margin-top:4px;font-size:15px;}

/* FAQ */
.faq-wrap{max-width:920px;}
.accordion-item{
  border:1px solid var(--c-border);border-radius:16px;overflow:hidden;background:#fff;
  margin-bottom:14px;box-shadow:0 4px 14px rgba(15,39,64,.04);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  font-size:16.5px;font-weight:600;color:var(--c-ink);background:#fff;
  padding:19px 22px;box-shadow:none;
}
.accordion-button:not(.collapsed){background:var(--c-tint);color:var(--c-primary-dark);}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(46,124,246,.16);z-index:2;}
.accordion-button::after{background-size:15px;width:15px;height:15px;}
.accordion-body{padding:4px 22px 22px;color:var(--c-muted);font-size:15.5px;line-height:1.78;}
.accordion-button:not(.collapsed)+.accordion-button:not(.collapsed){border-top:0;}

/* Related */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rel-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:#EEF3FA;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-x{
  align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--c-primary-dark);
  background:var(--c-tint);border-radius:999px;padding:5px 12px;
}
.rel-body h3{font-size:17.5px;line-height:1.45;}
.rel-body p{font-size:14.6px;color:var(--c-muted);flex:1;}
.rel-link{font-size:14.5px;font-weight:600;color:var(--c-primary-dark);display:inline-flex;align-items:center;gap:7px;}
.rel-link:hover{gap:11px;color:var(--c-primary);}

/* Share bar */
.share-bar{
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
  background:#EAF2FE;border:1px solid #D7E5FB;border-radius:20px;padding:24px 28px;
}
.share-left{display:flex;align-items:center;gap:14px;}
.share-left i{font-size:20px;color:var(--c-primary-dark);}
.share-left strong{display:block;font-size:16px;}
.share-left span{font-size:14px;color:var(--c-muted);}
.share-actions{display:flex;gap:10px;flex-wrap:wrap;}
.share-actions button{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;
  border-radius:var(--r-btn);background:#fff;border:1px solid #CFE0FB;color:var(--c-primary-dark);
  font-size:14.5px;font-weight:600;cursor:pointer;transition:background-color .2s ease,transform .2s ease;
}
.share-actions button:hover{background:var(--c-tint);transform:translateY(-2px);}
.share-actions button.solid{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.share-actions button.solid:hover{background:var(--c-primary-dark);}

/* ============ Footer ============ */
.site-footer{background:#0F2740;color:#C6D4E4;padding:66px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:#7F94AC;}
.footer-brand .brand-icon{background:#1B3E68;}
.footer-brand p{margin-top:18px;font-size:14.5px;line-height:1.8;color:#9FB2C7;max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;}
.footer-col a{display:block;font-size:14.5px;color:#9FB2C7;padding:6px 0;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13.5px;color:#8FA3B8;
}

/* ============ Responsive ============ */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .hero-float{left:-8px;bottom:-18px;}
  .hero-kpis{right:-6px;top:-14px;}
}
@media (max-width:1099px){
  .nav-menu{display:none;}
  .search-box{display:none;}
  .nav-actions .btn-entry{display:none;}
  .nav-toggle{display:grid;}
  .hero-grid{grid-template-columns:1fr;gap:52px;}
  .hero-visual{max-width:620px;}
  .issue-grid{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .check-shell{grid-template-columns:1fr;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .nav-wrap{height:66px;gap:14px;}
  .nav-actions .btn-start{display:none;}
  .hero{padding:52px 0 62px;}
  .hero-lead{font-size:16px;}
  .hero-float{position:static;margin-top:14px;display:inline-flex;}
  .hero-kpis{position:static;margin-bottom:14px;display:inline-block;}
  .step-card{grid-template-columns:1fr;gap:16px;padding:22px;}
  .issue-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .check-shell{padding:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:52px 0 22px;}
  .share-bar{padding:20px;flex-direction:column;align-items:flex-start;}
  .share-actions{width:100%;}
  .share-actions button{flex:1;justify-content:center;}
}
@media (max-width:520px){
  .container-x{padding:0 16px;}
  .hero h1{font-size:28px;}
  .hero-cta .btn-x{width:100%;}
  .brand-name{font-size:15px;}
}

/* roulang page: category2 */
:root{
  --brand:#2E7CF6;
  --brand-deep:#1558B0;
  --brand-soft:#EAF2FE;
  --ink:#0F2740;
  --teal:#12B5A5;
  --teal-soft:#E4F7F5;
  --amber:#F6A609;
  --amber-deep:#DE9500;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --muted:#5B6B7F;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-sm:0 6px 18px rgba(15,39,64,.06);
  --shadow:0 10px 30px rgba(15,39,64,.08);
  --shadow-lg:0 16px 40px rgba(15,39,64,.12);
  --section-gap:92px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(46,124,246,.35);outline-offset:2px;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 22px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(15,39,64,.09);}
.nav-wrap{display:flex;align-items:center;gap:22px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-icon{
  width:40px;height:40px;border-radius:13px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--teal) 100%);
  color:#fff;font-size:17px;
  box-shadow:0 8px 18px rgba(46,124,246,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);}
.nav-menu{display:flex;align-items:center;gap:4px;flex:1;margin-left:6px;}
.nav-menu a{
  padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--ink);font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-menu a:hover{background:#F1F6FD;color:var(--brand-deep);}
.nav-menu a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  background:#F2F7FD;border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box i{color:var(--muted);font-size:13px;}
.search-box input{
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink);width:132px;
}
.search-box input::placeholder{color:#93A3B5;}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(46,124,246,.14);}
.btn-entry,.btn-start{
  display:inline-flex;align-items:center;gap:7px;
  height:40px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:500;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-entry{background:#fff;border:1px solid var(--line);color:var(--brand-deep);}
.btn-entry:hover{background:var(--brand-soft);border-color:#C7DDFB;color:var(--brand-deep);}
.btn-start{background:var(--amber);border:1px solid var(--amber);color:#fff;font-weight:600;box-shadow:0 8px 18px rgba(246,166,9,.28);}
.btn-start:hover{background:var(--amber-deep);border-color:var(--amber-deep);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  place-items:center;font-size:16px;
}
.nav-toggle:hover{background:#F1F6FD;}

/* offcanvas drawer */
.nav-drawer{width:min(88vw,360px);border-left:1px solid var(--line);}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.nav-drawer .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:18px;}
.drawer-search{width:100%;}
.drawer-search input{width:100%;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  display:block;padding:13px 15px;border-radius:var(--radius-sm);
  font-size:15.5px;color:var(--ink);font-weight:500;background:#F7FAFE;
}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.drawer-actions .btn-entry,.drawer-actions .btn-start{justify-content:center;height:46px;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:76px 0 88px;
  background-image:linear-gradient(180deg,rgba(246,249,253,.86) 0%,rgba(246,249,253,.95) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid #D8E6FA;color:var(--brand-deep);
  font-size:13.5px;font-weight:600;
  box-shadow:var(--shadow-sm);
}
.eyebrow i{color:var(--teal);}
.hero h1{
  margin-top:22px;
  font-size:clamp(28px,3.7vw,46px);
  line-height:1.22;
  letter-spacing:-.02em;
}
.hero .hero-lead{
  margin-top:20px;
  font-size:17px;line-height:1.85;color:var(--muted);max-width:34em;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15.5px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(46,124,246,.28);}
.btn-main:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(21,88,176,.3);}
.btn-ghost{background:#fff;border:1px solid #C7DDFB;color:var(--brand-deep);}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);color:var(--brand-deep);}
.hero-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;font-size:13.5px;color:var(--muted);}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{color:var(--teal);}

.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid #fff;box-shadow:var(--shadow-lg);background:#fff;
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-float{
  position:absolute;left:-18px;bottom:-26px;
  display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:var(--radius-md);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-lg);
  max-width:280px;
}
.hero-float .dot{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--teal-soft);color:#0E9384;font-size:18px;flex-shrink:0;
}
.hero-float strong{display:block;font-size:15px;color:var(--ink);}
.hero-float small{font-size:12.5px;color:var(--muted);}

/* ---------- sections ---------- */
.section{padding:var(--section-gap) 0;}
.section.tight{padding-top:60px;}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--brand);margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;}
.section-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--muted);}

/* KPI */
.kpi-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:8px;
}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.kpi{
  padding:26px 24px;border-right:1px solid var(--line);
}
.kpi:last-child{border-right:0;}
.kpi-num{
  display:block;font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--brand-deep);
  letter-spacing:-.02em;line-height:1.1;
}
.kpi-num small{font-size:16px;font-weight:600;color:var(--muted);margin-left:4px;}
.kpi-label{display:block;margin-top:8px;font-size:14px;color:var(--muted);}

/* filter + device grid */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;
}
.filter-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);
  font-size:14.5px;font-weight:500;cursor:pointer;
  transition:all .2s ease;
}
.filter-chip i{font-size:13px;}
.filter-chip:hover{border-color:#C7DDFB;color:var(--brand-deep);background:#F6FAFF;}
.filter-chip.is-active{
  background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;
  box-shadow:0 10px 22px rgba(46,124,246,.26);
}
.device-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.device-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;height:100%;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D2E2FA;}
.device-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:19px;margin-bottom:16px;
}
.device-card h3{font-size:17.5px;line-height:1.4;}
.device-card p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--muted);}
.device-points{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.device-points li{display:flex;gap:9px;font-size:14px;color:#334E68;line-height:1.6;}
.device-points i{color:var(--teal);font-size:12px;margin-top:5px;flex-shrink:0;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-block;padding:5px 11px;border-radius:999px;
  background:#F2F7FD;border:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.tag.brand{background:var(--brand-soft);border-color:#CFE2FC;color:var(--brand-deep);font-weight:600;}
.tag.teal{background:var(--teal-soft);border-color:#C9EDE9;color:#0E9384;font-weight:600;}

/* timeline */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:26px;height:2px;
  background:linear-gradient(90deg,rgba(46,124,246,.4),rgba(18,181,165,.35),rgba(227,234,243,.2));
  z-index:0;
}
.step{position:relative;z-index:1;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:0 22px 24px;}
.step-num{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;
  background:#fff;border:2px solid var(--brand-soft);color:var(--brand-deep);
  font-size:19px;font-weight:700;margin:-26px 0 16px;
  box-shadow:var(--shadow-sm);
}
.step h3{font-size:17px;}
.step p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--muted);}
.step .step-note{margin-top:14px;font-size:13px;color:var(--brand-deep);display:flex;gap:8px;align-items:flex-start;}
.step .step-note i{margin-top:4px;font-size:12px;}

/* check list */
.check-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;
}
.check-row{
  display:grid;grid-template-columns:1.25fr 1fr 1.15fr;gap:22px;
  padding:22px 26px;border-bottom:1px solid var(--line);align-items:center;
  transition:background .2s ease;
}
.check-row:last-child{border-bottom:0;}
.check-row:hover{background:#FAFCFF;}
.check-row.head{
  background:#F4F8FE;font-size:13.5px;font-weight:700;color:var(--muted);
  letter-spacing:.04em;text-transform:uppercase;
}
.check-row .topic{font-size:15.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;}
.check-row .topic i{color:var(--brand);font-size:14px;}
.check-row .cause{font-size:14.5px;color:var(--muted);}
.check-row .fix{font-size:14.5px;color:#1F4E79;background:#F4F8FE;border:1px dashed #D6E4F7;border-radius:var(--radius-sm);padding:10px 14px;}

/* featured cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform .28s ease,box-shadow .28s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.feature-media{position:relative;overflow:hidden;}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease;}
.feature-card:hover .feature-media img{transform:scale(1.04);}
.feature-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feature-body h3{font-size:18px;line-height:1.45;}
.feature-body p{font-size:14.5px;line-height:1.75;color:var(--muted);}
.feature-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.feature-foot a{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* FAQ */
.faq{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start;}
.faq-aside{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px 26px;box-shadow:var(--shadow-sm);position:sticky;top:96px;
}
.faq-aside h3{font-size:19px;}
.faq-aside p{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--muted);}
.faq-aside .aside-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding:13px 16px;border-radius:var(--radius-sm);
  background:#F6FAFF;border:1px solid #E1EDFC;font-size:14.5px;font-weight:600;color:var(--brand-deep);
  transition:background .2s ease,transform .2s ease;
}
.faq-aside .aside-link:hover{background:var(--brand-soft);transform:translateX(3px);}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-md);background:#fff;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.faq-accordion .accordion-button{
  padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--ink);
  background:#fff;box-shadow:none;line-height:1.55;
}
.faq-accordion .accordion-button:not(.collapsed){background:#F2F7FE;color:var(--brand-deep);}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:3px solid rgba(46,124,246,.2);}
.faq-accordion .accordion-button::after{
  background-image:none;content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--brand);
  width:auto;height:auto;transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(180deg);}
.faq-accordion .accordion-body{
  padding:2px 22px 22px;font-size:15.5px;line-height:1.85;color:var(--muted);
}

/* help list */
.help-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.help-item{
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.help-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#D2E2FA;}
.help-item .ico{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;flex-shrink:0;
  background:var(--teal-soft);color:#0E9384;font-size:17px;
}
.help-item strong{display:block;font-size:15.5px;color:var(--ink);}
.help-item small{display:block;margin-top:4px;font-size:13.5px;color:var(--muted);line-height:1.6;}
.help-item .arrow{margin-left:auto;color:#A9BACB;font-size:14px;transition:transform .22s ease,color .22s ease;}
.help-item:hover .arrow{transform:translateX(4px);color:var(--brand);}

/* save/share CTA */
.save-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  background:linear-gradient(120deg,#F0F6FF 0%,#EAF7F6 100%);
  border:1px solid #DCE9F9;border-radius:var(--radius-lg);
  padding:26px 28px;
}
.save-bar .lead-ico{
  width:48px;height:48px;border-radius:15px;display:grid;place-items:center;
  background:#fff;color:var(--brand);font-size:19px;box-shadow:var(--shadow-sm);flex-shrink:0;
}
.save-bar .txt{flex:1;min-width:240px;}
.save-bar .txt strong{display:block;font-size:16.5px;color:var(--ink);}
.save-bar .txt span{display:block;margin-top:4px;font-size:14px;color:var(--muted);}
.save-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-soft{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid #CFE2FC;color:var(--brand-deep);
  font-size:14.5px;font-weight:600;cursor:pointer;
  transition:background .2s ease,transform .2s ease,border-color .2s ease,color .2s ease;
}
.btn-soft:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-soft.is-done{background:var(--teal-soft);border-color:#BFE9E4;color:#0E9384;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;background:var(--ink);color:#C7D6E5;padding:66px 0 30px;
}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:#8FA6BE;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:#9DB2C9;max-width:32em;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col a{
  display:block;padding:6px 0;font-size:14px;color:#9DB2C9;transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:#fff;transform:translateX(3px);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8FA6BE;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--section-gap:76px;}
  .search-box input{width:104px;}
  .device-grid{grid-template-columns:repeat(3,1fr);}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .timeline::before{display:none;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .search-box,.nav-actions .btn-entry{display:none;}
  .nav-toggle{display:grid;}
  .hero{padding:56px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-float{position:static;margin-top:18px;max-width:none;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .kpi{border-right:1px solid var(--line);}
  .kpi:nth-child(2n){border-right:0;}
  .kpi:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .device-grid{grid-template-columns:repeat(2,1fr);}
  .feature-grid{grid-template-columns:1fr 1fr;}
  .faq{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .check-row{grid-template-columns:1fr;gap:12px;padding:20px;}
  .check-row.head{display:none;}
  .help-list{grid-template-columns:1fr;}
}
@media (max-width:575px){
  :root{--section-gap:58px;}
  .container-x{padding:0 16px;}
  .nav-wrap{height:64px;gap:14px;}
  .brand-sub{display:none;}
  .brand-name{font-size:15px;}
  .hero h1{font-size:28px;}
  .hero .hero-lead{font-size:15.5px;}
  .hero-cta{flex-direction:column;}
  .btn-main,.btn-ghost{width:100%;justify-content:center;}
  .kpi-grid{grid-template-columns:1fr;}
  .kpi{border-right:0;border-bottom:1px solid var(--line);}
  .kpi:last-child{border-bottom:0;}
  .kpi:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .device-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .save-bar{padding:22px 18px;}
  .save-actions{width:100%;}
  .save-actions .btn-soft{flex:1;justify-content:center;}
}

/* roulang page: category3 */
:root{
  --brand:#2E7CF6;
  --brand-dark:#1558B0;
  --brand-tint:#EAF2FE;
  --ink:#0F2740;
  --teal:#12B5A5;
  --teal-tint:#E4F8F5;
  --amber:#F6A609;
  --amber-dark:#D98C04;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --muted:#5B6B7F;
  --radius-sm:12px;
  --radius:16px;
  --radius-lg:20px;
  --radius-xl:26px;
  --shadow-sm:0 4px 14px rgba(15,39,64,.06);
  --shadow:0 10px 30px rgba(15,39,64,.08);
  --shadow-lg:0 16px 40px rgba(15,39,64,.12);
  --ease:.28s cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block}
a{color:var(--brand-dark);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease)}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.35;letter-spacing:.2px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(46,124,246,.45);outline-offset:2px;border-radius:6px}

.container-x{width:min(1240px,100% - 48px);margin-inline:auto}
.section{padding:88px 0}
.section-sm{padding:64px 0}
.section-head{margin-bottom:38px;max-width:780px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1.2px;
  color:var(--brand-dark);background:var(--brand-tint);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(22px,2.4vw,32px)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:720px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(15,39,64,.08)}
.nav-wrap{
  min-height:72px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-icon{
  width:42px;height:42px;border-radius:13px;flex-shrink:0;
  display:grid;place-items:center;font-size:18px;color:#fff;
  background:linear-gradient(135deg,var(--brand) 0%,var(--teal) 100%);
  box-shadow:0 8px 18px rgba(46,124,246,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16.5px;font-weight:700;color:var(--ink);white-space:nowrap}
.brand-sub{font-size:11px;letter-spacing:1.4px;color:var(--muted);text-transform:uppercase}

.nav-menu{display:flex;align-items:center;gap:4px;margin-inline:auto}
.nav-menu a{
  position:relative;padding:9px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--ink);white-space:nowrap;
}
.nav-menu a:hover{background:var(--brand-tint);color:var(--brand-dark)}
.nav-menu a.active{color:var(--brand-dark);font-weight:600;background:var(--brand-tint)}
.nav-menu a.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:1px;width:22px;height:2px;border-radius:2px;background:var(--brand);
}

.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-box{
  position:relative;display:flex;align-items:center;
}
.search-box i{position:absolute;left:14px;font-size:13px;color:var(--muted);pointer-events:none}
.search-box input{
  width:190px;height:40px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  padding:0 14px 0 36px;font-size:14px;
  transition:border-color var(--ease),box-shadow var(--ease),width var(--ease);
}
.search-box input::placeholder{color:#93A2B4}
.search-box input:focus{
  outline:none;border-color:var(--brand);width:220px;
  box-shadow:0 0 0 3px rgba(46,124,246,.14);
}
.btn-entry,.btn-start{
  display:inline-flex;align-items:center;gap:7px;
  height:40px;padding:0 16px;border-radius:12px;
  font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease);
}
.btn-entry{border:1px solid var(--line);background:#fff;color:var(--ink)}
.btn-entry:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-tint)}
.btn-start{background:var(--amber);color:#fff;font-weight:600;box-shadow:0 8px 18px rgba(246,166,9,.26)}
.btn-start:hover{background:var(--amber-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(246,166,9,.32)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand-dark)}

/* 移动端抽屉 */
.offcanvas.drawer{width:min(360px,88vw);border:none}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer .offcanvas-body{padding:18px 20px 32px}
.drawer .search-box input{width:100%}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin:22px 0}
.drawer-links a{
  padding:13px 14px;border-radius:12px;font-size:15.5px;font-weight:500;color:var(--ink);
  border:1px solid transparent;
}
.drawer-links a:hover{border-color:var(--line);background:var(--brand-tint);color:var(--brand-dark)}
.drawer-links a.active{background:var(--brand-tint);color:var(--brand-dark);font-weight:600;border-color:rgba(46,124,246,.22)}
.drawer-actions{display:flex;flex-direction:column;gap:10px}
.drawer-actions .btn-entry,.drawer-actions .btn-start{justify-content:center;height:46px}

/* ============ 内页 banner ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:72px 0 76px;
  background-image:linear-gradient(115deg,rgba(246,249,253,.95) 0%,rgba(246,249,253,.72) 46%,rgba(234,242,254,.55) 100%),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(18,181,165,.16),transparent 68%);
}
.page-hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.breadcrumb-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:18px;
}
.breadcrumb-line a{color:var(--muted)}
.breadcrumb-line a:hover{color:var(--brand-dark)}
.breadcrumb-line span.sep{opacity:.55}
.page-hero h1{
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.24;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--brand-dark)}
.page-hero .lead{
  font-size:16.5px;color:var(--muted);max-width:600px;margin-bottom:26px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:13.5px;font-weight:500;
  background:#fff;border:1px solid var(--line);color:var(--ink);
  box-shadow:var(--shadow-sm);
}
.chip i{color:var(--teal);font-size:12px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.btn-main,.btn-outline{
  display:inline-flex;align-items:center;gap:9px;
  min-height:48px;padding:0 24px;border-radius:13px;
  font-size:15.5px;font-weight:600;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-main{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(46,124,246,.28)}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(21,88,176,.32)}
.btn-outline{background:#fff;color:var(--brand-dark);border:1px solid rgba(46,124,246,.4)}
.btn-outline:hover{background:var(--brand-tint);color:var(--brand-dark);transform:translateY(-2px);border-color:var(--brand)}

.hero-card{
  background:rgba(255,255,255,.9);border:1px solid var(--line);
  border-radius:var(--radius-xl);padding:14px;
  box-shadow:var(--shadow-lg);backdrop-filter:blur(6px);
}
.hero-card img{border-radius:var(--radius-lg);width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-card-body{padding:16px 12px 6px}
.hero-card-body h3{font-size:17px;margin-bottom:8px}
.hero-card-body p{font-size:14px;color:var(--muted);margin-bottom:14px}
.mini-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mini-metrics div{
  background:var(--bg);border:1px solid var(--line);border-radius:14px;
  padding:12px 10px;text-align:center;
}
.mini-metrics b{display:block;font-size:19px;color:var(--brand-dark);line-height:1.3}
.mini-metrics span{font-size:12px;color:var(--muted)}

/* ============ 帮助入口列表 ============ */
.entry-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-xl);
  box-shadow:var(--shadow);overflow:hidden;
}
.entry-panel-head{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:22px 26px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,#FBFDFF);
}
.entry-panel-head h3{font-size:18px}
.entry-panel-head span{font-size:13.5px;color:var(--muted)}
.entry-list{display:grid;grid-template-columns:repeat(2,1fr)}
.entry-item{
  display:flex;gap:16px;padding:22px 26px;
  border-bottom:1px solid var(--line);
  transition:background var(--ease),transform var(--ease);
}
.entry-item:nth-child(odd){border-right:1px solid var(--line)}
.entry-item:hover{background:var(--brand-tint)}
.entry-icon{
  width:44px;height:44px;border-radius:14px;flex-shrink:0;
  display:grid;place-items:center;font-size:17px;
  background:var(--teal-tint);color:#0E8F83;
}
.entry-item:nth-child(3n) .entry-icon{background:var(--brand-tint);color:var(--brand-dark)}
.entry-item:nth-child(4n) .entry-icon{background:#FFF4E0;color:#B67807}
.entry-item h4{font-size:16.5px;margin-bottom:6px}
.entry-item p{font-size:14px;color:var(--muted);margin-bottom:8px}
.entry-item .go{font-size:13.5px;font-weight:600;color:var(--brand-dark)}
.entry-item .go i{font-size:11px;margin-left:4px;transition:transform var(--ease)}
.entry-item:hover .go i{transform:translateX(3px)}

/* ============ 安全检查清单 ============ */
.check-wrap{
  background:linear-gradient(180deg,#0F2740 0%,#12355B 100%);
  border-radius:var(--radius-xl);padding:46px 42px;color:#fff;
  box-shadow:var(--shadow-lg);
}
.check-wrap .section-tag{background:rgba(255,255,255,.12);color:#CFE2FF}
.check-wrap h2{color:#fff}
.check-wrap .sub{color:rgba(255,255,255,.72);font-size:15px;margin-top:12px;max-width:700px}
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px}
.check-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);padding:22px 20px;
  transition:background var(--ease),transform var(--ease),border-color var(--ease);
}
.check-card:hover{background:rgba(255,255,255,.13);transform:translateY(-3px);border-color:rgba(255,255,255,.3)}
.check-card .num{font-size:13px;font-weight:700;color:#7FD9CF;letter-spacing:1px}
.check-card h4{font-size:16.5px;color:#fff;margin:12px 0 8px}
.check-card p{font-size:13.5px;color:rgba(255,255,255,.7);margin:0}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:44px;align-items:start}
.faq-side{position:sticky;top:104px}
.faq-side h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.faq-side p{color:var(--muted);font-size:15px}
.faq-note{
  margin-top:24px;background:var(--card);border:1px solid var(--line);
  border-left:4px solid var(--teal);border-radius:var(--radius);
  padding:18px 20px;font-size:14px;color:var(--muted);box-shadow:var(--shadow-sm);
}
.accordion.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius)!important;
  background:#fff;margin-bottom:12px;overflow:hidden;
  box-shadow:var(--shadow-sm);transition:box-shadow var(--ease),border-color var(--ease);
}
.accordion.faq-acc .accordion-item:hover{box-shadow:var(--shadow)}
.accordion.faq-acc .accordion-button{
  background:#fff;color:var(--ink);font-size:16.5px;font-weight:600;
  padding:20px 22px;box-shadow:none;gap:12px;line-height:1.5;
}
.accordion.faq-acc .accordion-button:not(.collapsed){
  background:var(--brand-tint);color:var(--brand-dark);
}
.accordion.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(46,124,246,.16)}
.accordion.faq-acc .accordion-button::after{
  width:20px;height:20px;background-size:20px;
  transition:transform var(--ease);
}
.accordion.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-180deg)}
.accordion.faq-acc .accordion-body{
  padding:6px 22px 22px;font-size:15px;line-height:1.8;color:#33465C;
}
.accordion.faq-acc .accordion-body ol{padding-left:20px;margin:0}
.accordion.faq-acc .accordion-body ol li{margin-bottom:6px}
.accordion.faq-acc .accordion-body strong{color:var(--ink)}

/* ============ 精选条目 ============ */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pick-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D3E1F5}
.pick-thumb{position:relative;overflow:hidden}
.pick-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease)}
.pick-card:hover .pick-thumb img{transform:scale(1.03)}
.badge-cat{
  position:absolute;left:14px;top:14px;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand-dark);box-shadow:var(--shadow-sm);
}
.pick-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.pick-body h3{font-size:18px;margin-bottom:10px;line-height:1.45}
.pick-body p{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.pick-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;
}
.pick-meta .link{font-weight:600;color:var(--brand-dark)}
.pick-meta .link i{font-size:11px;margin-left:4px}

/* ============ 相关推荐 ============ */
.related-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:30px 32px;box-shadow:var(--shadow-sm);
}
.related-head{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;margin-bottom:22px}
.related-head h2{font-size:20px}
.related-head a{font-size:14px;font-weight:600}
.related-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.rel-item{display:flex;gap:12px;align-items:flex-start;padding:12px;border-radius:var(--radius);transition:background var(--ease)}
.rel-item:hover{background:var(--brand-tint)}
.rel-item img{width:66px;height:56px;border-radius:11px;object-fit:cover;flex-shrink:0}
.rel-item h4{
  font-size:14.5px;font-weight:600;line-height:1.45;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-item:hover h4{color:var(--brand-dark)}
.rel-item span{font-size:12.5px;color:var(--muted)}

/* ============ 收藏 / 分享 CTA ============ */
.save-bar{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  background:linear-gradient(100deg,#EAF2FE 0%,#E4F8F5 100%);
  border:1px solid #D8E8F8;border-radius:var(--radius-xl);
  padding:26px 30px;box-shadow:var(--shadow-sm);
}
.save-left{display:flex;gap:16px;align-items:center;min-width:260px}
.save-left .ic{
  width:48px;height:48px;border-radius:15px;flex-shrink:0;
  display:grid;place-items:center;background:#fff;color:var(--brand-dark);
  font-size:19px;box-shadow:var(--shadow-sm);
}
.save-left h3{font-size:17px;margin-bottom:4px}
.save-left p{font-size:14px;color:var(--muted);margin:0}
.save-actions{display:flex;flex-wrap:wrap;gap:10px}
.btn-soft{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;
  border-radius:12px;background:#fff;border:1px solid rgba(46,124,246,.28);
  color:var(--brand-dark);font-size:14.5px;font-weight:600;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease);
}
.btn-soft:hover{background:#fff;transform:translateY(-2px);box-shadow:var(--shadow);color:var(--brand-dark)}

/* ============ 页脚 ============ */
.site-footer{background:#0F2740;color:rgba(255,255,255,.78);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.66);margin-top:18px;max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.7);
  padding:5px 0;transition:color var(--ease),transform var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-menu a{padding:9px 10px;font-size:14.5px}
  .search-box input{width:150px}
  .search-box input:focus{width:170px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .related-list{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-entry,.nav-actions .btn-start{display:none}
  .page-hero-grid{grid-template-columns:1fr;gap:36px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-side{position:static}
  .pick-grid{grid-template-columns:repeat(2,1fr)}
  .entry-list{grid-template-columns:1fr}
  .entry-item:nth-child(odd){border-right:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:64px 0}
  .check-wrap{padding:36px 26px}
}
@media (max-width:767.98px){
  .container-x{width:min(1240px,100% - 32px)}
  .page-hero{padding:48px 0 54px}
  .page-hero h1{font-size:clamp(26px,7vw,32px)}
  .page-hero .lead{font-size:15.5px}
  .hero-cta .btn-main,.hero-cta .btn-outline{width:100%;justify-content:center}
  .section{padding:52px 0}
  .check-grid{grid-template-columns:1fr}
  .pick-grid{grid-template-columns:1fr}
  .related-list{grid-template-columns:1fr}
  .save-bar{padding:22px 20px}
  .save-actions{width:100%}
  .save-actions .btn-soft{flex:1;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .entry-panel-head,.entry-item{padding-left:18px;padding-right:18px}
  .related-wrap{padding:22px 18px}
}
@media (max-width:519.98px){
  .mini-metrics{grid-template-columns:1fr}
  .brand-sub{display:none}
  .brand-name{font-size:15.5px}
}