/* roulang page: index */
:root{
  --c-primary:#1A4E8A;
  --c-primary-600:#143F73;
  --c-primary-700:#0F335E;
  --c-primary-100:#E7EFF9;
  --c-primary-050:#F3F7FC;
  --c-accent:#F0813A;
  --c-accent-600:#D96D28;
  --c-accent-soft:#FFF1E7;
  --c-teal:#128F86;
  --c-teal-soft:#E6F5F3;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-subtle:#EEF2F8;
  --c-text-1:#14202F;
  --c-text-2:#4E5F73;
  --c-text-3:#8A99AC;
  --c-border:#E4EAF2;
  --c-border-strong:#D2DBE7;
  --r-sm:8px;--r-md:12px;--r-lg:16px;--r-xl:22px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,47,.05);
  --sh-2:0 4px 16px rgba(20,32,47,.07);
  --sh-3:0 12px 32px rgba(20,32,47,.10);
  --ring:0 0 0 3px rgba(26,78,138,.18);

  --bs-body-font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --bs-body-color:#14202F;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#E4EAF2;
  --bs-border-radius:12px;
  --bs-link-color:#1A4E8A;
  --bs-link-hover-color:#0F335E;
  --bs-primary:#1A4E8A;
  --bs-primary-rgb:26,78,138;
  --bs-focus-ring-color:rgba(26,78,138,.18);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text-1);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--c-text-1);letter-spacing:.2px;}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;}
h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,text-decoration-color .18s ease-out;}
a:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:3px;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:var(--r-sm);}
.container{width:100%;max-width:1200px;padding-inline:16px;margin-inline:auto;}
@media (min-width:768px){.container{max-width:720px;}}
@media (min-width:992px){.container{max-width:960px;}}
@media (min-width:1200px){.container{max-width:1200px;}}
.section{padding:80px 0;}
.section-sm{padding:56px 0;}
.section-alt{background:var(--c-surface);}
.section-soft{background:linear-gradient(180deg,#FFFFFF 0%,var(--c-primary-050) 100%);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-100);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:16px;
}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:16px;}
.text-muted-2{color:var(--c-text-2);}
.text-muted-3{color:var(--c-text-3);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.nav-shell{
  min-height:64px;display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text-1);font-weight:800;font-size:18px;}
.brand:hover{color:var(--c-text-1);text-decoration:none;}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-600) 100%);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:15px;position:relative;
}
.brand-mark::after{
  content:"";position:absolute;right:-2px;bottom:-2px;width:9px;height:9px;
  background:var(--c-accent);border:2px solid #fff;border-radius:50%;
}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-inline:auto;}
.nav-links .nav-link{
  position:relative;padding:20px 0;font-size:15px;font-weight:500;
  color:var(--c-text-2);background:none;
}
.nav-links .nav-link::after{
  content:"";position:absolute;left:50%;bottom:14px;height:2px;width:0;
  background:var(--c-primary);border-radius:2px;transform:translateX(-50%);
  transition:width .18s ease-out;
}
.nav-links .nav-link:hover{color:var(--c-primary);text-decoration:none;}
.nav-links .nav-link:hover::after,.nav-links .nav-link.is-active::after{width:100%;}
.nav-links .nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 12px;background:var(--c-subtle);
  border-radius:var(--r-md);border:1px solid transparent;min-width:220px;
  transition:background .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.search-box i{color:var(--c-text-3);font-size:15px;}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;
}
.search-box input::placeholder{color:var(--c-text-3);}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:var(--ring);}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border-radius:10px;border:1px solid var(--c-accent);
  background:var(--c-accent);color:#fff;font-size:14px;font-weight:600;
  transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out;
}
.btn-cta:hover{background:var(--c-accent-600);border-color:var(--c-accent-600);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-cta:active{transform:scale(.99);}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--c-border);background:#fff;
  border-radius:var(--r-md);display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--c-text-1);
}
.mobile-nav{border-top:1px solid var(--c-border);background:#fff;}
.mobile-nav .inner{padding:12px 16px 20px;display:flex;flex-direction:column;gap:4px;}
.mobile-nav a{
  height:48px;display:flex;align-items:center;padding:0 12px;border-radius:var(--r-md);
  font-size:15px;color:var(--c-text-1);font-weight:500;
}
.mobile-nav a:hover{background:var(--c-subtle);text-decoration:none;}
.mobile-nav a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600;}
.mobile-nav .search-box{margin-top:8px;min-width:0;width:100%;}

/* ---------- Buttons ---------- */
.btn-solid,.btn-ghost,.btn-link-arrow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;border-radius:var(--r-md);
  transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-solid{
  height:48px;padding:0 24px;background:var(--c-accent);color:#fff;border:1px solid var(--c-accent);font-size:15px;
}
.btn-solid:hover{background:var(--c-accent-600);border-color:var(--c-accent-600);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-solid:active{transform:scale(.99);}
.btn-solid.lg{height:52px;padding:0 30px;font-size:16px;}
.btn-ghost{
  height:48px;padding:0 24px;background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);font-size:15px;
}
.btn-ghost:hover{background:var(--c-primary-050);color:var(--c-primary-700);text-decoration:none;transform:translateY(-1px);}
.btn-ghost.lg{height:52px;padding:0 30px;font-size:16px;}
.btn-link-arrow{
  background:none;border:0;padding:0;color:var(--c-primary);font-size:14px;
}
.btn-link-arrow i{transition:transform .18s ease-out;}
.btn-link-arrow:hover{color:var(--c-primary-700);text-decoration:none;}
.btn-link-arrow:hover i{transform:translateX(2px);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-primary-050) 100%);
  border-bottom:1px solid var(--c-border);
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;
  background:
    repeating-conic-gradient(from 0deg,rgba(26,78,138,.06) 0deg 1deg,transparent 1deg 6deg);
  border-radius:50%;pointer-events:none;
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:1fr;
  gap:48px;padding:56px 0 64px;align-items:center;
}
@media (min-width:992px){
  .hero-inner{grid-template-columns:6fr 6fr;gap:40px;min-height:560px;padding:64px 0 72px;}
}
.hero h1 .kw{color:var(--c-primary);}
.hero-sub{
  margin-top:16px;font-size:17px;line-height:1.75;color:var(--c-text-2);max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.trust-bar{
  margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;
  padding-top:20px;border-top:1px solid var(--c-border);
}
.stars{display:inline-flex;align-items:center;gap:4px;color:var(--c-accent);font-size:14px;}
.stars span{color:var(--c-text-2);margin-left:4px;font-size:14px;}
.pill-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-teal-soft);color:var(--c-teal);
  font-size:13px;font-weight:600;border-radius:var(--r-pill);padding:5px 12px;
}
.hero-visual{position:relative;min-height:300px;}
.hero-visual-bg{
  position:absolute;inset:0;border-radius:var(--r-xl);
  background-size:cover;background-position:center;
  box-shadow:var(--sh-3);overflow:hidden;
}
.hero-visual-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,51,94,.72) 0%,rgba(26,78,138,.42) 100%);
}
.hero-shot{
  position:absolute;left:8%;right:8%;bottom:8%;
  border-radius:var(--r-lg);overflow:hidden;background:#fff;
  border:6px solid #fff;box-shadow:var(--sh-3);
}
.hero-shot img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.float-badge{
  position:absolute;display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-pill);
  padding:7px 14px;font-size:13px;font-weight:600;color:var(--c-text-1);box-shadow:var(--sh-2);
}
.float-badge i{color:var(--c-teal);}
.fb-1{left:-6px;top:24px;}
.fb-2{right:-4px;top:96px;}
@media (max-width:575.98px){.fb-1,.fb-2{display:none;}}

/* ---------- Value section ---------- */
.value-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:992px){
  .value-grid{grid-template-columns:7fr 5fr;}
  .value-grid .vcell-wide{grid-column:span 1;}
  .value-row-2{grid-template-columns:5fr 7fr;}
}
.value-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:28px;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
  height:100%;
}
.value-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.value-card h3{margin-bottom:10px;}
.value-card p{color:var(--c-text-2);font-size:15px;line-height:1.8;}
.value-card .figure{
  border-radius:var(--r-md);overflow:hidden;margin-bottom:20px;
  aspect-ratio:16/9;
}
.value-card .figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.value-card:hover .figure img{transform:scale(1.03);}
.value-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.value-list li{display:flex;gap:10px;font-size:15px;color:var(--c-text-2);}
.value-list li i{color:var(--c-teal);margin-top:5px;font-size:14px;flex:none;}
.icon-badge{
  width:40px;height:40px;border-radius:var(--r-md);background:var(--c-primary-100);
  color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;margin-bottom:16px;
}

/* ---------- Carousel ---------- */
.shot-carousel{position:relative;}
.shot-carousel .carousel-item img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--c-border);
}
.shot-caption{
  margin-top:16px;text-align:center;color:var(--c-text-2);font-size:15px;
}
.carousel-indicators{position:static;margin:18px 0 0;}
.carousel-indicators [data-bs-target]{
  width:28px;height:4px;border-radius:2px;background:var(--c-border-strong);
  border:0;opacity:1;margin:0 5px;
}
.carousel-indicators .active{background:var(--c-primary);}
.carousel-control-prev,.carousel-control-next{width:44px;opacity:.9;}
.carousel-control-prev-icon,.carousel-control-next-icon{
  background-color:#fff;border:1px solid var(--c-border);border-radius:50%;
  width:40px;height:40px;background-size:42%;box-shadow:var(--sh-2);
}
.carousel-control-prev-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%231A4E8A' viewBox='0 0 16 16'%3e%3cpath d='M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0'/%3e%3c/svg%3e");}
.carousel-control-next-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%231A4E8A' viewBox='0 0 16 16'%3e%3cpath d='M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708'/%3e%3c/svg%3e");}

/* ---------- Requirements ---------- */
.req-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:28px;height:100%;
}
.req-card .req-title{display:flex;align-items:center;gap:10px;margin-bottom:20px;}
.req-card .req-title i{font-size:22px;color:var(--c-primary);}
.req-card .req-title h3{font-size:18px;}
.req-list{display:grid;gap:0;}
.req-list .row-item{
  display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;
  padding:12px 0;border-bottom:1px solid var(--c-subtle);
}
.req-list .row-item:last-child{border-bottom:0;}
.req-list dt{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);font-weight:500;
}
.req-list dt i{color:var(--c-teal);font-size:13px;}
.req-list dd{margin:0;font-size:15px;font-weight:600;color:var(--c-text-1);text-align:right;}

/* ---------- Stats & Reviews ---------- */
.stat-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:48px;
}
@media (min-width:992px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px;
}
.stat-item .num{font-size:32px;font-weight:800;color:var(--c-primary);line-height:1.2;}
.stat-item .label{margin-top:6px;font-size:14px;color:var(--c-text-2);}
.review-wall{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.review-wall{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.review-wall{grid-template-columns:repeat(3,1fr);align-items:start;}}
.review-card{
  position:relative;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.review-card::before{
  content:"\201C";position:absolute;right:18px;top:10px;
  font-size:56px;line-height:1;color:rgba(26,78,138,.08);font-family:Georgia,serif;
}
.review-card .stars{margin-bottom:12px;}
.review-card p{font-size:15px;line-height:1.75;color:var(--c-text-2);}
.review-user{display:flex;align-items:center;gap:12px;margin-top:18px;}
.review-user .avatar{
  width:36px;height:36px;border-radius:50%;background:var(--c-primary-100);
  color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;flex:none;
}
.review-user .name{font-size:14px;font-weight:600;color:var(--c-text-1);}
.review-user .role{font-size:13px;color:var(--c-text-3);}
@media (max-width:767.98px){
  .review-wall{grid-auto-flow:column;grid-auto-columns:82%;overflow-x:auto;padding-bottom:8px;
    scroll-snap-type:x mandatory;}
  .review-card{scroll-snap-align:start;}
}

/* ---------- Download band ---------- */
.download-band{
  background:linear-gradient(135deg,var(--c-primary-700) 0%,var(--c-primary) 100%);
  border-radius:var(--r-xl);padding:40px 32px;color:#fff;
  display:grid;gap:28px;align-items:center;
}
@media (min-width:992px){.download-band{grid-template-columns:7fr 5fr;padding:48px;}}
.download-band h2{color:#fff;}
.download-band p{color:rgba(255,255,255,.78);margin-top:10px;font-size:15px;line-height:1.8;}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:575.98px){
  .download-actions{flex-direction:column;}
  .download-actions .btn-solid,.download-actions .btn-ghost{width:100%;}
}
.download-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.download-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.dl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.dl-meta span{
  font-size:13px;color:rgba(255,255,255,.86);background:rgba(255,255,255,.14);
  border-radius:var(--r-pill);padding:5px 12px;
}

/* ---------- News / CMS list ---------- */
.news-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:32px;
}
.news-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.news-card .thumb{overflow:hidden;aspect-ratio:16/9;}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.news-card:hover .thumb img{transform:scale(1.03);}
.news-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-card .badge-cat{
  align-self:flex-start;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-100);border-radius:var(--r-pill);padding:4px 12px;
}
.news-card h3{font-size:17px;line-height:1.5;}
.news-card h3 a{color:var(--c-text-1);}
.news-card h3 a:hover{color:var(--c-primary);}
.news-card .excerpt{
  font-size:14px;color:var(--c-text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding-top:12px;border-top:1px solid var(--c-subtle);
  font-size:13px;color:var(--c-text-3);
}
.news-feature{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.news-feature .thumb{overflow:hidden;aspect-ratio:4/3;}
.news-feature .thumb img{width:100%;height:100%;object-fit:cover;}
.news-feature .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-feature h3{font-size:20px;}
.empty-state{
  border:1px dashed var(--c-border-strong);border-radius:var(--r-lg);
  background:#fff;min-height:180px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:8px;text-align:center;padding:32px;
}
.empty-state i{font-size:44px;color:var(--c-text-3);}
.empty-state strong{font-size:15px;color:var(--c-text-2);font-weight:600;}
.empty-state span{font-size:13px;color:var(--c-text-3);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:992px){.faq-layout{grid-template-columns:4fr 8fr;gap:48px;}}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{color:var(--c-text-2);font-size:15px;}
.faq-aside .faq-hint{
  margin-top:24px;background:var(--c-primary-050);border:1px solid var(--c-border);
  border-radius:var(--r-lg);padding:20px;font-size:14px;color:var(--c-text-2);
}
.accordion-item{
  border:1px solid var(--c-border)!important;border-radius:var(--r-lg)!important;
  background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--c-text-1);
  background:#fff;padding:20px 22px;box-shadow:none!important;
  border-radius:var(--r-lg)!important;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:#fff;}
.accordion-button::after{display:none;}
.accordion-button .plus{
  margin-left:auto;width:32px;height:32px;flex:none;border-radius:50%;
  background:var(--c-primary-100);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;transition:transform .2s ease-out;
}
.accordion-button:not(.collapsed) .plus{transform:rotate(45deg);}
.accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--c-primary-050);border:1px solid var(--c-border);border-radius:var(--r-xl);
  padding:36px 32px;display:grid;gap:24px;align-items:center;
}
@media (min-width:992px){.cta-band{grid-template-columns:7fr 5fr;padding:44px;}}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);}
.cta-band p{margin-top:10px;color:var(--c-text-2);font-size:15px;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:992px){.cta-band .actions{justify-content:flex-end;}}
@media (max-width:575.98px){
  .cta-band .actions{flex-direction:column;}
  .cta-band .actions a{width:100%;}
}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--c-primary-050);border-top:1px solid var(--c-border);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.footer-grid{grid-template-columns:4fr 3fr 3fr 3fr;}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:300px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:32px;height:32px;border-radius:50%;background:#fff;border:1px solid var(--c-border);
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:15px;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.footer-social a:hover{background:var(--c-primary);color:#fff;text-decoration:none;transform:translateY(-1px);}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);text-decoration:none;}
.footer-contact li{font-size:14px;color:var(--c-text-2);display:flex;gap:8px;}
.footer-contact li i{color:var(--c-primary);margin-top:5px;font-size:14px;flex:none;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--c-border-strong);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 20px;
  justify-content:space-between;font-size:13px;color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3);}
.footer-bottom a:hover{color:var(--c-primary);}

@media (max-width:991.98px){
  .section{padding:56px 0;}
  .section-sm{padding:44px 0;}
  .nav-shell{min-height:56px;}
  .value-card,.req-card,.review-card,.stat-item{padding:20px;}
}
@media (max-width:767.98px){
  .hero-inner{padding:40px 0 48px;gap:32px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%;}
  .section-head{margin-bottom:28px;}
  .news-head{margin-bottom:24px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --c-primary:#1A4E8A;
  --c-primary-600:#143F73;
  --c-primary-700:#0F335E;
  --c-primary-100:#E7EFF9;
  --c-primary-050:#F3F7FC;
  --c-accent:#F0813A;
  --c-accent-600:#D96D28;
  --c-accent-soft:#FFF1E7;
  --c-teal:#128F86;
  --c-teal-soft:#E6F5F3;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-subtle:#EEF2F8;
  --c-text-1:#14202F;
  --c-text-2:#4E5F73;
  --c-text-3:#8A99AC;
  --c-border:#E4EAF2;
  --c-border-strong:#D2DBE7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,47,.05);
  --sh-2:0 4px 16px rgba(20,32,47,.07);
  --sh-3:0 12px 32px rgba(20,32,47,.10);
  --focus-ring:0 0 0 3px rgba(26,78,138,.18);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,text-decoration-color .18s ease-out;}
a:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4,h5{margin:0;color:var(--c-text-1);letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--r-sm);}
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:16px;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;
  border-radius:var(--r-md);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;cursor:pointer;}
.btn-primary-c{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn-primary-c:hover{background:var(--c-primary-600);border-color:var(--c-primary-600);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary-c:active{background:var(--c-primary-700);transform:scale(.99);}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.btn-accent:hover{background:var(--c-accent-600);border-color:var(--c-accent-600);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{background:var(--c-accent-600);transform:scale(.99);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border-strong);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-700);text-decoration:none;transform:translateY(-1px);}
.btn-sm-c{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease-out;}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text-1);font-weight:800;font-size:18px;white-space:nowrap;}
.brand:hover{color:var(--c-primary);text-decoration:none;}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--c-primary);color:#fff;display:inline-flex;
  align-items:center;justify-content:center;font-size:15px;position:relative;flex:none;}
.brand-mark::after{content:"";position:absolute;right:-3px;bottom:-3px;width:9px;height:9px;border-radius:50%;
  background:var(--c-accent);border:2px solid #fff;}
.nav-links{display:flex;align-items:center;gap:28px;margin-inline-start:12px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;background:var(--c-primary);
  transform:translateX(0);transition:left .18s ease-out,right .18s ease-out;}
.nav-link:hover{color:var(--c-primary);text-decoration:none;}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{left:0;right:0;}
.header-actions{display:flex;align-items:center;gap:12px;margin-inline-start:auto;}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;border-radius:10px;background:var(--c-subtle);
  border:1px solid transparent;color:var(--c-text-3);transition:background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:var(--focus-ring);}
.search-box input{width:190px;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-text-1);font-family:inherit;}
.search-box input::placeholder{color:var(--c-text-3);}
.search-box button{border:0;background:transparent;color:var(--c-primary);font-size:15px;padding:0;cursor:pointer;line-height:1;}
.header-cta{height:40px;border-radius:10px;padding:0 18px;font-size:14px;}
.menu-toggle{width:44px;height:44px;border:1px solid var(--c-border);background:#fff;border-radius:10px;color:var(--c-primary);
  font-size:20px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;}
.mobile-panel{display:none;border-top:1px solid var(--c-border);background:#fff;padding:12px 0 18px;}
.mobile-panel.is-open{display:block;}
.mobile-panel .container{display:flex;flex-direction:column;gap:4px;}
.mobile-link{display:flex;align-items:center;height:48px;padding:0 12px;border-radius:var(--r-md);color:var(--c-text-2);font-size:15px;font-weight:500;}
.mobile-link:hover{background:var(--c-primary-050);color:var(--c-primary);text-decoration:none;}
.mobile-link.is-active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600;}
.mobile-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 12px;border-radius:var(--r-md);
  background:var(--c-subtle);margin:8px 0 12px;color:var(--c-text-3);}
.mobile-search input{flex:1;border:0;background:transparent;outline:none;font-size:15px;color:var(--c-text-1);font-family:inherit;}

/* ============ 文章头 ============ */
.article-head{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,var(--c-primary-050) 100%);
  border-bottom:1px solid var(--c-border);padding:28px 0 40px;overflow:hidden;}
.article-head::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--c-border) 1px,transparent 1px),linear-gradient(90deg,var(--c-border) 1px,transparent 1px);
  background-size:48px 48px;opacity:.35;pointer-events:none;}
.article-head .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:20px;}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-border-strong);}
.crumb .current{color:var(--c-text-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head h1{font-size:clamp(26px,3.4vw,40px);line-height:1.3;font-weight:800;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:14px;color:var(--c-text-2);}
.article-meta .divider{width:1px;height:14px;background:var(--c-border-strong);}
.badge-pill{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;background:var(--c-primary-100);color:var(--c-primary);}
.badge-teal{background:var(--c-teal-soft);color:var(--c-teal);}

/* ============ 正文布局 ============ */
.main-wrap{padding:40px 0 64px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;}
.article-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:36px;}
.article-body{max-width:760px;font-size:16px;line-height:1.85;color:var(--c-text-1);}
.article-body > * + *{margin-top:16px;}
.article-body h2{font-size:clamp(21px,2.6vw,28px);line-height:1.35;font-weight:700;margin-top:36px;padding-left:14px;border-left:4px solid var(--c-primary);}
.article-body h3{font-size:19px;font-weight:700;margin-top:28px;}
.article-body h4{font-size:16px;font-weight:600;margin-top:22px;color:var(--c-text-2);}
.article-body p{color:var(--c-text-1);}
.article-body ul,.article-body ol{padding-left:22px;color:var(--c-text-2);}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin-top:8px;line-height:1.8;}
.article-body img{border-radius:var(--r-md);box-shadow:var(--sh-1);margin:8px 0;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body blockquote{margin:20px 0;padding:16px 20px;background:var(--c-primary-050);border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-text-2);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--c-subtle);padding:12px 14px;text-align:left;}
.article-body th{background:var(--c-primary-050);font-weight:600;color:var(--c-text-1);}
.article-body code{background:var(--c-subtle);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--c-primary-700);}
.article-empty{text-align:center;padding:48px 20px;background:var(--c-primary-050);border:1px dashed var(--c-border-strong);border-radius:var(--r-lg);}
.article-empty i{font-size:44px;color:var(--c-text-3);}
.article-empty h2{margin-top:14px;font-size:20px;font-weight:700;border:0;padding:0;}
.article-empty p{margin-top:8px;color:var(--c-text-2);font-size:15px;}
.article-empty .btn{margin-top:20px;}

.article-foot{margin-top:34px;padding-top:24px;border-top:1px solid var(--c-border);display:flex;flex-wrap:wrap;gap:16px;
  align-items:center;justify-content:space-between;}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--c-subtle);
  color:var(--c-text-2);font-size:13px;transition:background-color .18s ease-out,color .18s ease-out;}
.tag:hover{background:var(--c-primary-100);color:var(--c-primary);text-decoration:none;}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);}
.share-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-border);background:#fff;color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
.share-btn:hover{background:var(--c-primary-050);transform:translateY(-1px);box-shadow:var(--sh-1);}
.share-tip{color:var(--c-teal);font-size:13px;opacity:0;transition:opacity .2s ease-out;}
.share-tip.show{opacity:1;}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  padding:20px;transition:box-shadow .2s ease-out,transform .2s ease-out;}
.side-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);}
.side-card h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--c-primary);}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.side-list a{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.6;}
.side-list a i{color:var(--c-primary);margin-top:4px;font-size:13px;}
.side-list a:hover{color:var(--c-primary);}
.side-media{border-radius:var(--r-md);overflow:hidden;margin-top:14px;}
.side-media img{aspect-ratio:16/10;object-fit:cover;width:100%;transition:transform .25s ease-out;}
.side-media:hover img{transform:scale(1.03);}
.side-card p.side-desc{margin-top:10px;font-size:13.5px;color:var(--c-text-2);line-height:1.7;}
.side-card .btn{margin-top:14px;}

/* ============ 相关推荐 ============ */
.related{margin-top:28px;}
.related-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;}
.related-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.text-link i{transition:transform .18s ease-out;}
.text-link:hover{text-decoration:none;}
.text-link:hover i{transform:translateX(2px);}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.related-card{display:flex;gap:16px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:16px;transition:box-shadow .2s ease-out,transform .2s ease-out;}
.related-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);text-decoration:none;}
.related-thumb{width:112px;height:84px;flex:none;border-radius:var(--r-md);overflow:hidden;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-card h3{font-size:16px;font-weight:600;line-height:1.5;}
.related-card p{margin-top:8px;font-size:13.5px;color:var(--c-text-2);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card .meta{margin-top:10px;font-size:13px;color:var(--c-text-3);}

/* ============ CTA 条 ============ */
.cta-band{margin:56px 0 0;}
.cta-inner{background:linear-gradient(120deg,var(--c-primary-050) 0%,#fff 55%,var(--c-accent-soft) 100%);
  border:1px solid var(--c-border);border-radius:var(--r-xl);padding:32px;display:flex;flex-wrap:wrap;gap:24px;
  align-items:center;justify-content:space-between;box-shadow:var(--sh-1);}
.cta-inner h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;}
.cta-inner p{margin-top:8px;font-size:15px;color:var(--c-text-2);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{margin-top:64px;background:var(--c-primary-050);border-top:1px solid var(--c-border);padding:56px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{width:34px;height:34px;border-radius:50%;background:#fff;border:1px solid var(--c-border);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;transition:background-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
.footer-social a:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2);text-decoration:none;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text-2);line-height:1.7;}
.footer-contact i{color:var(--c-primary);margin-top:4px;}
.footer-bottom{margin-top:36px;padding-top:18px;border-top:1px solid var(--c-border);display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:var(--c-text-3);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .search-box input{width:150px;}
  .layout{grid-template-columns:minmax(0,1fr) 280px;gap:24px;}
}
@media (max-width:991px){
  .layout{grid-template-columns:1fr;}
  .sidebar{position:static;}
  .article-card{padding:26px 20px;}
  .article-body{max-width:100%;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .header-inner{height:56px;gap:12px;}
  .brand{font-size:16px;}
  .article-head{padding:20px 0 30px;}
  .main-wrap{padding:28px 0 48px;}
  .article-card{padding:22px 16px;border-radius:var(--r-md);}
  .crumb .current{max-width:220px;}
  .article-meta{gap:10px;font-size:13px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .related-card{flex-direction:column;}
  .related-thumb{width:100%;height:160px;}
  .cta-inner{padding:22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:40px 0 20px;}
}
@media (max-width:520px){
  .article-head h1{font-size:24px;}
  .search-box{display:none;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1A4E8A;
  --c-primary-600:#143F73;
  --c-primary-700:#0F335E;
  --c-primary-100:#E7EFF9;
  --c-primary-050:#F3F7FC;
  --c-accent:#F0813A;
  --c-accent-600:#D96D28;
  --c-accent-soft:#FFF1E7;
  --c-teal:#128F86;
  --c-teal-soft:#E6F5F3;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-subtle:#EEF2F8;
  --c-text-1:#14202F;
  --c-text-2:#4E5F73;
  --c-text-3:#8A99AC;
  --c-border:#E4EAF2;
  --c-border-strong:#D2DBE7;
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:22px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,47,.05);
  --sh-2:0 4px 16px rgba(20,32,47,.07);
  --sh-3:0 12px 32px rgba(20,32,47,.10);
  --focus-ring:0 0 0 3px rgba(26,78,138,.18);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;

  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--c-text-1);
  --bs-body-bg:var(--c-bg);
  --bs-border-color:var(--c-border);
  --bs-border-radius:var(--r-md);
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-primary-700);
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:26,78,138;
  --bs-focus-ring-color:rgba(26,78,138,.18);
  --bs-emphasis-color:var(--c-text-1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text-1);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{margin:0;color:var(--c-text-1);font-weight:700;line-height:1.3;}
h1{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.4px;}
h2{font-size:clamp(22px,3vw,32px);}
h3{font-size:20px;font-weight:700;}
h4{font-size:17px;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--r-sm);}

@media (min-width:1200px){.container{max-width:1200px;}}
@media (min-width:992px) and (max-width:1199.98px){.container{max-width:960px;}}
@media (min-width:768px) and (max-width:991.98px){.container{max-width:720px;}}
@media (max-width:767.98px){.container{max-width:100%;padding-left:16px;padding-right:16px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  text-decoration:none;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  position:relative;
  width:28px;height:28px;
  border-radius:9px;
  background:linear-gradient(150deg,var(--c-primary),var(--c-primary-700));
  color:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;
  right:-3px;bottom:-3px;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--c-accent);
  border:2px solid #fff;
}
.brand-text{
  font-size:18px;
  font-weight:800;
  color:var(--c-text-1);
  letter-spacing:-.2px;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--c-text-2);
  padding:20px 0;
  text-decoration:none;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;right:50%;
  bottom:14px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  transition:left .18s ease-out,right .18s ease-out;
}
.nav-link:hover{color:var(--c-primary);text-decoration:none;}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{left:0;right:0;}
.header-tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 12px;
  min-width:230px;
  background:var(--c-subtle);
  border:1px solid transparent;
  border-radius:var(--r-md);
  transition:background .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search i{color:var(--c-text-3);font-size:15px;}
.nav-search input{
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--c-text-1);width:100%;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search:focus-within{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:var(--focus-ring);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-md);
  font-weight:600;
  font-size:15px;
  line-height:1;
  border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
  text-decoration:none;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:scale(.99);}
.btn-accent{
  background:var(--c-accent);
  color:#fff;
  height:40px;
  padding:0 18px;
  border-radius:10px;
}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;box-shadow:0 6px 18px rgba(240,129,58,.28);}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  height:48px;
  padding:0 24px;
}
.btn-primary:hover{background:var(--c-primary-600);color:#fff;box-shadow:var(--sh-2);}
.btn-outline{
  background:#fff;
  color:var(--c-primary);
  border-color:var(--c-primary);
  height:48px;
  padding:0 24px;
}
.btn-outline:hover{background:var(--c-primary-050);color:var(--c-primary-700);}
.btn-on-dark{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.45);
  height:48px;
  padding:0 24px;
}
.btn-on-dark:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.nav-toggle{
  width:44px;height:44px;
  border-radius:var(--r-md);
  border:1px solid var(--c-border);
  background:#fff;
  color:var(--c-text-1);
  font-size:20px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.mobile-nav{
  border-top:1px solid var(--c-border);
  background:#fff;
  padding:12px 0 20px;
}
.mobile-nav .m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  font-size:16px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-subtle);
}
.mobile-nav .m-link.is-active{color:var(--c-primary);font-weight:600;}
.mobile-nav .nav-search{width:100%;margin:14px 0 12px;}
.mobile-nav .btn-accent{width:100%;height:46px;}

/* ---------- 通用区块 ---------- */
.section{padding:80px 0;}
.section-sm{padding:56px 0;}
.section-alt{background:var(--c-primary-050);}
.section-white{background:#fff;}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
  background:var(--c-primary-100);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:16px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.sec-head h2{margin-bottom:14px;}
.sec-head p{font-size:16px;color:var(--c-text-2);line-height:1.8;}

/* ---------- 分类页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(160deg,#FFFFFF 0%,var(--c-primary-050) 62%,#EAF1FA 100%);
  border-bottom:1px solid var(--c-border);
  padding:52px 0 64px;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(26,78,138,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(26,78,138,.06) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 62%);
  pointer-events:none;
}
.page-hero .container{position:relative;}
.breadcrumb-row{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:22px;
}
.breadcrumb-row a{color:var(--c-text-3);}
.breadcrumb-row a:hover{color:var(--c-primary);}
.breadcrumb-row .sep{color:var(--c-border-strong);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 400px;
  gap:48px;
  align-items:center;
}
.hero-copy h1{margin-bottom:18px;max-width:640px;}
.hero-copy h1 .hl{color:var(--c-primary);}
.hero-lead{
  font-size:17px;
  line-height:1.8;
  color:var(--c-text-2);
  max-width:580px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.fact-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--c-text-2);
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-pill);
  padding:7px 14px;
  box-shadow:var(--sh-1);
}
.fact-pill i{color:var(--c-teal);font-size:14px;}
.hero-art{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-3);
  aspect-ratio:4/3.2;
  background:var(--c-primary-100);
}
.hero-art img{width:100%;height:100%;object-fit:cover;}
.hero-art::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,rgba(15,51,94,.05) 0%,rgba(15,51,94,.62) 100%);
}
.hero-art-caption{
  position:absolute;
  left:20px;right:20px;bottom:18px;
  z-index:2;
  color:#fff;
}
.hero-art-caption strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px;}
.hero-art-caption span{font-size:13px;color:rgba(255,255,255,.82);}
.hero-badge{
  position:absolute;
  top:18px;left:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:rgba(255,255,255,.94);
  color:var(--c-primary-700);
  font-size:13px;
  font-weight:700;
  border-radius:var(--r-pill);
  padding:7px 14px;
  box-shadow:var(--sh-2);
}
.hero-badge i{color:var(--c-accent);}

/* ---------- 图文交替 ---------- */
.split-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
}
.split-block + .split-block{border-top:1px solid var(--c-border);}
.split-block.reverse .split-media{order:2;}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:16/11;
  background:var(--c-subtle);
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.split-media:hover img{transform:scale(1.03);}
.split-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-weight:800;
  font-size:15px;
  margin-bottom:16px;
}
.split-body h3{margin-bottom:12px;}
.split-body > p{color:var(--c-text-2);margin-bottom:20px;}
.feature-list{display:grid;gap:12px;margin-bottom:22px;}
.feature-list li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--c-text-2);
  line-height:1.7;
}
.feature-list li i{
  color:var(--c-teal);
  font-size:17px;
  flex-shrink:0;
  margin-top:3px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:15px;
}
.text-link i{transition:transform .18s ease-out;}
.text-link:hover i{transform:translateX(2px);}

/* ---------- 能力矩阵卡 ---------- */
.cap-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.cap-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
  height:100%;
}
.cap-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);border-color:var(--c-border-strong);}
.cap-icon{
  width:44px;height:44px;
  border-radius:var(--r-md);
  background:var(--c-primary-050);
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  margin-bottom:16px;
}
.cap-card h3{font-size:18px;margin-bottom:10px;}
.cap-card p{font-size:14px;color:var(--c-text-2);line-height:1.75;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  font-size:13px;
  border-radius:var(--r-pill);
  padding:4px 12px;
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-weight:600;
}
.tag.teal{background:var(--c-teal-soft);color:var(--c-teal);}

/* ---------- 系统要求卡 ---------- */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.spec-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
}
.spec-head{
  display:flex;
  align-items:center;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--c-subtle);
  margin-bottom:6px;
}
.spec-head i{
  width:38px;height:38px;
  border-radius:10px;
  background:var(--c-primary-050);
  color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;
}
.spec-head h3{font-size:17px;margin:0;}
.spec-head span{display:block;font-size:13px;color:var(--c-text-3);font-weight:400;}
.spec-list dt{
  font-size:13px;
  color:var(--c-text-3);
  font-weight:600;
  padding-top:14px;
}
.spec-list dd{
  margin:2px 0 0;
  font-size:15px;
  font-weight:600;
  color:var(--c-text-1);
  display:flex;
  align-items:flex-start;
  gap:8px;
  padding-bottom:14px;
  border-bottom:1px solid var(--c-subtle);
}
.spec-list dt:last-of-type + dd{border-bottom:0;padding-bottom:0;}
.spec-list dd i{color:var(--c-teal);font-size:15px;margin-top:5px;flex-shrink:0;}

/* ---------- 深色下载区 ---------- */
.download-band{
  position:relative;
  overflow:hidden;
  background:linear-gradient(150deg,var(--c-primary-700) 0%,#123a68 55%,#0c2a4d 100%);
  color:#fff;
  padding:80px 0;
}
.download-band::before{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(240,129,58,.30) 0%,rgba(240,129,58,0) 62%);
  pointer-events:none;
}
.download-band::after{
  content:"";
  position:absolute;
  left:-80px;bottom:-140px;
  width:380px;height:380px;
  border-radius:50%;
  border:1px dashed rgba(255,255,255,.14);
  pointer-events:none;
}
.download-band .container{position:relative;z-index:1;}
.download-band h2{color:#fff;margin-bottom:14px;}
.download-band .band-lead{color:rgba(255,255,255,.78);max-width:640px;margin-bottom:36px;}
.download-cards{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  margin-bottom:28px;
}
.dl-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-lg);
  padding:26px;
  backdrop-filter:blur(2px);
  transition:border-color .2s ease-out,background .2s ease-out,transform .2s ease-out;
}
.dl-card:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.34);transform:translateY(-2px);}
.dl-card-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.dl-card h3{color:#fff;font-size:19px;}
.dl-card p{color:rgba(255,255,255,.74);font-size:14px;line-height:1.75;margin-bottom:18px;}
.dl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  padding:14px 0;
  border-top:1px solid rgba(255,255,255,.16);
  margin-bottom:20px;
}
.dl-meta div{font-size:13px;color:rgba(255,255,255,.66);}
.dl-meta strong{display:block;color:#fff;font-size:15px;font-weight:700;margin-top:2px;}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;}
.badge-soft{
  font-size:13px;
  font-weight:600;
  border-radius:var(--r-pill);
  padding:5px 13px;
  background:var(--c-teal-soft);
  color:var(--c-teal);
  white-space:nowrap;
}
.badge-soft.amber{background:var(--c-accent-soft);color:var(--c-accent-600);}
.band-note{
  display:flex;
  flex-wrap:wrap;
  gap:14px 28px;
  font-size:13px;
  color:rgba(255,255,255,.66);
}
.band-note span{display:inline-flex;align-items:center;gap:7px;}
.band-note i{color:#7FD3CB;}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{color:var(--c-text-2);font-size:15px;margin-bottom:22px;}
.faq-help{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-1);
}
.faq-help h4{font-size:15px;margin-bottom:8px;}
.faq-help p{font-size:14px;color:var(--c-text-2);margin-bottom:12px;}
.faq-help a{font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq-item:hover{border-color:var(--c-border-strong);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:20px 22px;
  background:transparent;
  border:0;
  font-size:17px;
  font-weight:600;
  color:var(--c-text-1);
  cursor:pointer;
}
.faq-q:focus-visible{box-shadow:var(--focus-ring);}
.faq-q .plus{
  flex-shrink:0;
  width:32px;height:32px;
  border-radius:50%;
  background:var(--c-primary-100);
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  transition:transform .2s ease-out,background .2s ease-out;
}
.faq-q[aria-expanded="true"] .plus{transform:rotate(45deg);background:var(--c-primary);color:#fff;}
.faq-a{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-xl);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--sh-2);
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{color:var(--c-text-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-050);
  border-top:1px solid var(--c-border);
  padding:64px 0 0;
  margin-top:8px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:320px;margin-bottom:20px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:36px;height:36px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--c-border);
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.footer-social a:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);transform:translateY(-2px);text-decoration:none;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:14px;
  color:var(--c-text-2);
}
.footer-contact i{color:var(--c-primary);font-size:15px;margin-top:5px;}
.footer-bottom{
  border-top:1px solid var(--c-border);
  padding:20px 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 340px;gap:36px;}
  .nav-search{min-width:180px;}
}
@media (max-width:991.98px){
  .section{padding:56px 0;}
  .download-band{padding:56px 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-art{aspect-ratio:16/10;}
  .split-block{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .split-block.reverse .split-media{order:0;}
  .cap-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .spec-grid{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .section{padding:48px 0;}
  .page-hero{padding:36px 0 48px;}
  .cap-grid{grid-template-columns:1fr;}
  .download-cards{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .dl-actions{flex-direction:column;}
  .dl-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .faq-q{font-size:16px;padding:18px;}
  .faq-a{padding:0 18px 18px;}
  .cap-card{padding:18px;}
  .spec-card{padding:18px;}
  .dl-card{padding:20px;}
}
@media (max-width:519.98px){
  h1{font-size:26px;}
  .hero-lead{font-size:16px;}
  .brand-text{font-size:16px;}
  .hero-facts{gap:8px;}
  .fact-pill{font-size:12px;padding:6px 11px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1A4E8A;
  --c-primary-600:#143F73;
  --c-primary-700:#0F335E;
  --c-primary-100:#E7EFF9;
  --c-primary-050:#F3F7FC;
  --c-accent:#F0813A;
  --c-accent-600:#D96D28;
  --c-accent-soft:#FFF1E7;
  --c-teal:#128F86;
  --c-teal-soft:#E6F5F3;
  --c-bg:#F6F8FB;
  --c-surface:#FFFFFF;
  --c-subtle:#EEF2F8;
  --c-text-1:#14202F;
  --c-text-2:#4E5F73;
  --c-text-3:#8A99AC;
  --c-border:#E4EAF2;
  --c-border-strong:#D2DBE7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,32,47,.05);
  --sh-2:0 4px 16px rgba(20,32,47,.07);
  --sh-3:0 12px 32px rgba(20,32,47,.10);
  --focus-ring:0 0 0 3px rgba(26,78,138,.18);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;

  --bs-body-font-family:var(--font-sans);
  --bs-body-color:var(--c-text-1);
  --bs-body-bg:var(--c-surface);
  --bs-border-color:var(--c-border);
  --bs-border-radius:var(--r-md);
  --bs-link-color:var(--c-primary);
  --bs-link-hover-color:var(--c-primary-700);
  --bs-primary:var(--c-primary);
  --bs-primary-rgb:26,78,138;
  --bs-focus-ring-color:rgba(26,78,138,.18);
  --bs-font-sans-serif:var(--font-sans);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text-1);
  background:var(--c-surface);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,text-decoration-color .18s ease-out;}
a:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--c-text-1);}
p{margin:0;}
:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--r-sm);}

.container{
  width:100%;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media (min-width:768px){.container{max-width:720px;}}
@media (min-width:992px){.container{max-width:960px;}}
@media (min-width:1200px){.container{max-width:1200px;}}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:0 0 0 3px rgba(26,78,138,.18);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:transform .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn:active{transform:scale(.99);}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);box-shadow:0 4px 14px rgba(240,129,58,.24);}
.btn-accent:hover{background:var(--c-accent-600);border-color:var(--c-accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 8px 22px rgba(240,129,58,.28);text-decoration:none;}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border-strong);}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-700);transform:translateY(-1px);text-decoration:none;}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:15px;
}
.btn-link-arrow i{transition:transform .18s ease-out;}
.btn-link-arrow:hover{text-decoration:none;color:var(--c-primary-700);}
.btn-link-arrow:hover i{transform:translateX(2px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-size:13px;
  font-weight:600;
  line-height:1.4;
}
.badge-teal{background:var(--c-teal-soft);color:var(--c-teal);}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent-600);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .2s ease-out;
}
.site-header.is-stuck{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  flex:0 0 auto;
  color:var(--c-text-1);
  font-weight:800;
  font-size:17px;
  letter-spacing:.2px;
}
.brand:hover{text-decoration:none;color:var(--c-primary-700);}
.brand-mark{
  position:relative;
  width:28px;height:28px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--c-primary);
  color:#fff;
  font-size:16px;
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;
  width:9px;height:9px;border-radius:50%;
  background:var(--c-accent);
  border:2px solid #fff;
}
.brand-text{white-space:nowrap;}
.nav-links{
  display:flex;align-items:center;gap:28px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:64px;
  font-size:15px;
  color:var(--c-text-2);
  font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:0;height:2px;background:var(--c-primary);
  transform:translateX(-50%);
  transition:width .18s ease-out;
}
.nav-link:hover{color:var(--c-primary);text-decoration:none;}
.nav-link:hover::after{width:60%;}
.nav-link.is-active{color:var(--c-primary);font-weight:700;}
.nav-link.is-active::after{width:100%;}
.header-actions{
  margin-left:auto;
  display:flex;align-items:center;gap:12px;
}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:238px;height:40px;
  padding:0 8px 0 14px;
  border-radius:var(--r-pill);
  background:var(--c-subtle);
  border:1px solid transparent;
  transition:background-color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search i{color:var(--c-text-3);font-size:15px;}
.nav-search input{
  flex:1;min-width:0;height:100%;
  border:0;background:transparent;
  font-size:14px;color:var(--c-text-1);
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search input:focus{outline:none;}
.nav-search:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:var(--focus-ring);}
.nav-search button{
  width:28px;height:28px;
  display:inline-flex;align-items:center;justify-content:center;
  border:0;border-radius:50%;
  background:var(--c-primary);color:#fff;
  font-size:13px;cursor:pointer;
  transition:background-color .18s ease-out;
}
.nav-search button:hover{background:var(--c-primary-600);}
.header-cta{height:40px;padding:0 18px;border-radius:10px;font-size:14px;}
.nav-toggle{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-md);
  font-size:20px;color:var(--c-text-1);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}
.mobile-nav{
  border-top:1px solid var(--c-border);
  background:#fff;
  padding:12px 16px 20px;
}
.mobile-nav .nav-link{
  height:48px;width:100%;
  border-bottom:1px solid var(--c-subtle);
  font-size:16px;
}
.mobile-nav .nav-link::after{display:none;}
.mobile-nav .nav-link.is-active{color:var(--c-primary);}
.mobile-nav .nav-search{width:100%;margin:14px 0 4px;}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--c-text-3);
}
.crumbs a{color:var(--c-text-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:var(--c-border-strong);}
.crumbs .current{color:var(--c-text-3);}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  padding:40px 0 56px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-primary-050) 100%);
  border-bottom:1px solid var(--c-border);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(26,78,138,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(26,78,138,.06) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
  min-height:220px;
}
.hero-copy .crumbs{margin-bottom:18px;}
.hero-title{
  font-size:clamp(28px,4vw,44px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.4px;
  margin-bottom:16px;
}
.hero-title .hl{color:var(--c-primary);}
.hero-lead{
  font-size:17px;
  line-height:1.75;
  color:var(--c-text-2);
  max-width:640px;
}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:22px;
}
.hero-art{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--sh-3);
  background:var(--c-primary-100);
}
.hero-art img{
  width:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
}
.hero-art::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(26,78,138,0) 40%,rgba(26,78,138,.34) 100%);
}
.hero-art .art-caption{
  position:absolute;left:18px;right:18px;bottom:16px;
  z-index:2;
  color:#fff;
  font-size:14px;
  font-weight:600;
  text-shadow:0 1px 6px rgba(15,51,94,.5);
}
.hero-clock{
  position:absolute;top:-16px;right:-16px;
  width:82px;height:82px;
  border-radius:50%;
  border:1px dashed rgba(26,78,138,.35);
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(2px);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:var(--c-primary);
  letter-spacing:.5px;
}
@media (max-width:991.98px){
  .hero-inner{grid-template-columns:1fr;gap:28px;}
  .hero-clock{display:none;}
}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--c-bg);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--c-primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-kicker::before{
  content:"";width:22px;height:2px;border-radius:2px;background:var(--c-accent);
}
.section-title{font-size:clamp(22px,3vw,32px);line-height:1.3;}
.section-sub{margin-top:14px;color:var(--c-text-2);font-size:16px;line-height:1.8;}

/* ---------- 准备事项卡片 ---------- */
.prep-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.prep-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.prep-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:var(--c-border-strong);}
.prep-icon{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-size:20px;
  margin-bottom:16px;
}
.prep-card h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.prep-card p{font-size:14px;line-height:1.8;color:var(--c-text-2);}

/* ---------- 步骤时间线 ---------- */
.step-list{
  position:relative;
  display:grid;
  gap:18px;
}
.step-item{
  position:relative;
  display:grid;
  grid-template-columns:76px minmax(0,1fr);
  gap:22px;
  padding:24px;
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.step-item:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.step-index{
  display:flex;align-items:center;justify-content:center;
  width:60px;height:60px;
  border-radius:16px;
  background:var(--c-primary-050);
  border:1px solid var(--c-primary-100);
  color:var(--c-primary);
  font-size:20px;font-weight:800;
  letter-spacing:.5px;
}
.step-body h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.step-body p{font-size:15px;line-height:1.85;color:var(--c-text-2);}
.step-hint{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-top:14px;
}
.step-hint span{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--c-teal);
  background:var(--c-teal-soft);
  padding:4px 10px;border-radius:var(--r-pill);
}

/* ---------- 系统要求 / 下载 ---------- */
.req-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.req-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.req-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.req-head{
  display:flex;align-items:center;gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid var(--c-subtle);
  margin-bottom:16px;
}
.req-head i{font-size:22px;color:var(--c-primary);}
.req-head h3{font-size:18px;font-weight:700;}
.req-head span{margin-left:auto;font-size:13px;color:var(--c-text-3);}
.spec-list{display:grid;gap:2px;}
.spec-row{
  display:grid;
  grid-template-columns:120px minmax(0,1fr);
  gap:16px;
  align-items:start;
  padding:11px 0;
  border-bottom:1px solid var(--c-subtle);
}
.spec-row:last-child{border-bottom:0;}
.spec-key{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);
}
.spec-key::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--c-teal);flex:0 0 auto;
}
.spec-val{font-size:15px;font-weight:600;color:var(--c-text-1);line-height:1.7;}

.download-panel{
  margin-top:28px;
  padding:28px;
  background:linear-gradient(120deg,var(--c-primary-050) 0%,#fff 60%);
  border:1px solid var(--c-primary-100);
  border-radius:var(--r-xl);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.download-panel h3{font-size:20px;margin-bottom:8px;}
.download-panel p{font-size:14px;color:var(--c-text-2);max-width:560px;}
.download-actions{display:flex;gap:12px;flex-wrap:wrap;}
.download-actions .btn{height:52px;}

/* ---------- 使用要点 ---------- */
.usage-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.usage-card{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.usage-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);}
.usage-card .idx{
  font-size:13px;font-weight:700;color:var(--c-text-3);
  letter-spacing:1.2px;margin-bottom:10px;display:block;
}
.usage-card h3{font-size:17px;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.usage-card h3 i{color:var(--c-teal);font-size:17px;}
.usage-card p{font-size:14px;line-height:1.8;color:var(--c-text-2);}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.faq-aside p{font-size:15px;line-height:1.85;color:var(--c-text-2);margin-top:14px;}
.faq-aside .badge-soft{margin-top:20px;}
.accordion-item{
  background:#fff;
  border:1px solid var(--c-border);
  border-radius:var(--r-lg) !important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.accordion-button{
  background:#fff;
  font-size:17px;
  font-weight:600;
  color:var(--c-text-1);
  padding:20px 22px;
  box-shadow:none !important;
  display:flex;
  align-items:center;
  gap:16px;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:#fff;}
.accordion-button::after{
  content:"+";
  font-family:var(--font-sans);
  font-size:20px;
  font-weight:600;
  line-height:1;
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--c-primary-050);
  color:var(--c-primary);
  background-image:none !important;
  transition:transform .18s ease-out,background-color .18s ease-out;
  flex:0 0 32px;
  margin-left:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);background:var(--c-primary-100);}
.accordion-body{
  font-size:15px;
  line-height:1.85;
  color:var(--c-text-2);
  padding:0 22px 22px 22px;
}
.accordion-button:focus{box-shadow:var(--focus-ring) !important;}

/* ---------- CTA 条 ---------- */
.cta-band{
  padding:36px;
  border-radius:var(--r-xl);
  background:linear-gradient(120deg,var(--c-primary-050) 0%,#fff 55%,var(--c-accent-soft) 100%);
  border:1px solid var(--c-border);
  box-shadow:var(--sh-1);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--c-text-2);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-050);
  border-top:1px solid var(--c-border);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:40px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--c-text-2);max-width:380px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--c-border);
  color:var(--c-primary);
  font-size:15px;
  transition:transform .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.footer-social a:hover{transform:translateY(-2px);border-color:var(--c-primary);color:var(--c-primary-700);}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--c-text-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-contact li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--c-text-2);
}
.footer-contact i{color:var(--c-primary);margin-top:4px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:18px 0 22px;
  border-top:1px solid var(--c-border);
  font-size:13px;
  color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .prep-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991.98px){
  .section{padding:56px 0;}
  .usage-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .header-inner{height:60px;}
  .nav-link{height:60px;}
}
@media (max-width:767.98px){
  .page-hero{padding:28px 0 40px;}
  .hero-lead{font-size:16px;}
  .prep-grid,.usage-grid,.req-grid{grid-template-columns:1fr;gap:18px;}
  .step-item{grid-template-columns:1fr;gap:14px;padding:20px;}
  .step-index{width:48px;height:48px;border-radius:14px;font-size:17px;}
  .spec-row{grid-template-columns:1fr;gap:4px;}
  .download-panel,.cta-band{padding:22px;gap:20px;}
  .download-actions,.cta-actions{width:100%;}
  .download-actions .btn,.cta-actions .btn{flex:1 1 100%;width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section-head{margin-bottom:28px;}
}
@media (max-width:519.98px){
  .brand-text{font-size:16px;}
  .hero-title{font-size:26px;}
  .section{padding:44px 0;}
  .prep-card,.usage-card,.req-card{padding:18px;}
}