/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#2C5F7C;
  --c-primary-dark:#1E475F;
  --c-primary-soft:#E7EFF4;
  --c-accent:#C0763A;
  --c-accent-soft:#FBF1E6;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-ink:#14232C;
  --c-ink-2:#4A5F6B;
  --c-ink-3:#8797A0;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(20,35,44,.05),0 8px 20px -12px rgba(20,35,44,.14);
  --sh-2:0 2px 4px rgba(20,35,44,.06),0 18px 34px -16px rgba(20,35,44,.22);
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0 0 .6em;font-family:var(--serif);font-weight:700;color:var(--c-ink);line-height:1.3;}
h1{font-size:clamp(30px,3.6vw,46px);line-height:1.25;letter-spacing:.01em;}
h2{font-size:clamp(24px,2.4vw,32px);}
h3{font-size:20px;font-weight:600;line-height:1.4;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.15em;}
li{margin-bottom:.4em;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:16px;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 容器与栅格 ============ */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 28px;}
.grid{display:grid;gap:32px;}
.grid-12{grid-template-columns:repeat(12,1fr);}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-12{grid-column:span 12;}
@media (max-width:1023px){
  .wrap{padding:0 24px;}
  .grid-12{grid-template-columns:repeat(2,1fr);gap:24px;}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 2;}
}
@media (max-width:639px){
  .wrap{padding:0 18px;}
  .grid-12{grid-template-columns:1fr;gap:20px;}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 1;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease,box-shadow .24s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn-primary:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{display:flex;width:100%;}

/* ============ 标签 / 徽章 ============ */
.badge,.tag{
  display:inline-block;padding:4px 10px;border-radius:999px;
  font-size:12px;line-height:1.5;letter-spacing:.04em;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent);}
.eyebrow{
  display:inline-block;padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.18em;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
  margin-bottom:18px;text-transform:uppercase;
}

/* ============ 站点头部 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--c-line);
  transition:background .26s ease,box-shadow .26s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 1px 0 rgba(20,35,44,.06),0 8px 20px -18px rgba(20,35,44,.35);
}
.nav-desktop{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:84px;transition:height .26s ease;
}
.site-header.is-scrolled .nav-desktop{height:64px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px;}
.nav-right{justify-content:flex-end;}
.nav-left a:not(.btn),.nav-right a:not(.btn){
  position:relative;font-size:14.5px;color:var(--c-ink-2);padding:6px 0;font-weight:500;
}
.nav-left a:not(.btn)::after,.nav-right a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width .25s ease;
}
.nav-left a:not(.btn):hover,.nav-right a:not(.btn):hover{color:var(--c-primary-dark);}
.nav-left a:not(.btn):hover::after,.nav-right a:not(.btn):hover::after{width:100%;}
.nav-left a.active,.nav-right a.active{color:var(--c-primary-dark);font-weight:600;}
.nav-left a.active::after,.nav-right a.active::after{width:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);}
.brand:hover{color:var(--c-primary-dark);}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:none;
  background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:17px;font-weight:700;
  box-shadow:0 6px 14px -8px rgba(30,71,95,.7);
}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:.02em;}
.nav-mobile{display:none;align-items:center;justify-content:space-between;height:64px;}
.menu-toggle{
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:10px;
  background:var(--c-surface);display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;cursor:pointer;
  transition:border-color .22s ease,background .22s ease;
}
.menu-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.menu-toggle span{display:block;width:19px;height:2px;background:var(--c-ink);border-radius:2px;transition:background .22s ease;}
.menu-toggle:hover span{background:var(--c-primary-dark);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,35,44,.42);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:65;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:70;
  background:var(--c-primary-dark);color:#F3F7F9;
  padding:20px 22px 30px;transform:translateY(-102%);
  transition:transform .32s ease;max-height:100vh;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(247,245,240,.18);}
.drawer-head .brand-text{color:#F7F5F0;}
.drawer-close{
  width:38px;height:38px;border-radius:9px;border:1px solid rgba(247,245,240,.28);
  background:transparent;color:#F7F5F0;font-size:22px;line-height:1;cursor:pointer;
  transition:background .22s ease;
}
.drawer-close:hover{background:rgba(247,245,240,.14);}
.drawer-nav{display:block;margin:8px 0 20px;}
.drawer-nav a{
  display:block;padding:14px 2px;color:#E4EDF1;font-size:15.5px;
  border-bottom:1px solid rgba(247,245,240,.14);
}
.drawer-nav a:hover,.drawer-nav a.active{color:#FFFFFF;}
.drawer-nav a.active{font-weight:600;}
.drawer-cta{width:100%;}

@media (max-width:1023px){
  .nav-desktop{display:none;}
  .nav-mobile{display:flex;}
}

/* ============ Hero ============ */
.hero{position:relative;padding:74px 0 92px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(44,95,124,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(44,95,124,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
}
.hero .wrap{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-l);box-shadow:var(--sh-1);
  background:var(--c-primary-soft);
}
.hero h1{margin-bottom:20px;}
.hero-sub{font-size:17px;color:var(--c-ink-2);max-width:34em;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;list-style:none;margin:0;padding:22px 0 0;
  border-top:1px solid var(--c-line);
}
.hero-stats li{
  padding:0 28px 0 0;margin:0 28px 12px 0;border-right:1px solid var(--c-line);
}
.hero-stats li:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats strong{
  display:block;font-family:var(--serif);font-size:26px;font-weight:700;
  color:var(--c-primary-dark);line-height:1.2;
}
.hero-stats span{font-size:13px;color:var(--c-ink-3);letter-spacing:.04em;}
@media (max-width:1023px){
  .hero{padding:52px 0 64px;}
  .hero-media{margin-top:8px;}
  .hero-media img{aspect-ratio:16/9;}
  .hero h1{margin-bottom:16px;}
}
@media (max-width:639px){
  .hero-stats li{padding-right:18px;margin-right:18px;}
  .hero-stats strong{font-size:22px;}
  .hero-actions .btn{flex:1 1 100%;}
}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-tint{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:44px;
}
.section-head h2{margin:0;}
.section-head p{margin:8px 0 0;color:var(--c-ink-2);max-width:44em;}
.link-more{
  font-size:14.5px;font-weight:600;color:var(--c-primary);
  border-bottom:1px solid var(--c-primary);padding-bottom:2px;
  transition:color .22s ease,border-color .22s ease;
}
.link-more:hover{color:var(--c-accent);border-color:var(--c-accent);}
@media (max-width:1023px){.section{padding:72px 0;}}
@media (max-width:639px){.section{padding:56px 0;}.section-head{margin-bottom:30px;}}

/* ============ 品牌主张 ============ */
.claims-head h2{margin-bottom:14px;}
.claims-head p{color:var(--c-ink-2);font-size:15.5px;}
.claims-list{display:flex;flex-direction:column;}
.claim-item{
  display:flex;gap:20px;padding:24px 0;
  border-top:1px solid var(--c-line);
}
.claim-item:first-child{border-top:0;padding-top:0;}
.claim-item:last-child{padding-bottom:0;}
.claim-icon{
  flex:none;width:44px;height:44px;border-radius:12px;
  background:var(--c-accent-soft);color:var(--c-accent);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-size:17px;font-weight:700;
}
.claim-item h3{margin:0 0 6px;font-size:18px;}
.claim-item p{margin:0;color:var(--c-ink-2);font-size:15px;}

/* ============ 图文故事 ============ */
.story-block{align-items:center;}
.story-block + .story-block{margin-top:60px;}
.story-media img{
  width:100%;aspect-ratio:3/2;object-fit:cover;
  border-radius:var(--r-l);box-shadow:var(--sh-1);background:var(--c-primary-soft);
}
.story-media figcaption{font-size:13px;color:var(--c-ink-3);margin-top:10px;line-height:1.7;}
.story-text h3{margin-bottom:14px;}
.story-text p{color:var(--c-ink-2);font-size:15.5px;}
.story-list{list-style:none;padding:0;margin:18px 0 0;}
.story-list li{
  position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2);
}
.story-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--c-accent);
}
@media (max-width:1023px){
  .story-block + .story-block{margin-top:48px;}
  .story-block .col-5,.story-block .col-7{order:0;}
}

/* ============ 卡片 ============ */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D2C6;}
.card-media{display:block;overflow:hidden;background:var(--c-primary-soft);}
.card-media img{width:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;}
.card-meta time{font-size:13px;color:var(--c-ink-3);}
.card h3{margin:0 0 10px;}
.card h3 a{color:var(--c-ink);}
.card h3 a:hover{color:var(--c-primary-dark);}
.card p{
  color:var(--c-ink-2);font-size:15px;margin:0 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{
  margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;
}
.card-link i{font-style:normal;transition:transform .24s ease;}
.card:hover .card-link i{transform:translateX(4px);}

.feature-main .card-media img{aspect-ratio:16/10;}
.feature-side{display:flex;flex-direction:column;gap:24px;}
.card-mini{flex-direction:row;}
.card-mini .card-media{flex:0 0 132px;}
.card-mini .card-media img{height:100%;aspect-ratio:1/1;}
.card-mini .card-body{padding:18px 20px;}
.card-mini h3{font-size:17px;}
.card-mini p{-webkit-line-clamp:2;}
.card-row{flex-direction:row;align-items:center;gap:0;background:var(--c-primary-soft);border-color:var(--c-primary-soft);}
.card-row .card-body{padding:20px 22px;}
.card-row h3{font-size:17px;margin-bottom:6px;}
.card-row p{margin-bottom:0;}
@media (max-width:639px){
  .card-mini{flex-direction:column;}
  .card-mini .card-media{flex:none;}
  .card-mini .card-media img{aspect-ratio:16/9;}
}

/* ============ 最新信息列表 ============ */
.latest-list{display:flex;flex-direction:column;}
.latest-item{
  display:flex;gap:26px;padding:24px 0;
  border-bottom:1px solid var(--c-line);
  transition:background .22s ease;
}
.latest-item:first-child{border-top:1px solid var(--c-line);}
.latest-item:hover{background:rgba(231,239,244,.42);}
.latest-date{
  flex:0 0 96px;font-size:13px;color:var(--c-ink-3);
  letter-spacing:.02em;padding-top:4px;
}
.latest-body{flex:1;min-width:0;}
.latest-body h3{font-size:18px;margin:0 0 8px;}
.latest-body h3 a{color:var(--c-ink);}
.latest-body h3 a:hover{color:var(--c-primary-dark);}
.latest-body p{
  margin:0;color:var(--c-ink-2);font-size:15px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.latest-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:10px;}
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--c-line);
  border-radius:var(--r-m);background:var(--c-surface);
}
.empty-mark{
  display:block;font-size:28px;color:var(--c-ink-3);margin-bottom:10px;line-height:1;
}
.empty-state p{color:var(--c-ink-2);margin-bottom:18px;}
@media (max-width:639px){
  .latest-item{flex-direction:column;gap:10px;}
  .latest-date{flex:none;padding-top:0;}
}

/* ============ 信任背书 ============ */
.quote-grid{align-items:start;}
.quote-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:28px 30px;box-shadow:var(--sh-1);
}
.quote-card p{font-size:15.5px;color:var(--c-ink-2);margin-bottom:20px;}
.quote-foot{display:flex;align-items:center;gap:12px;border-top:1px solid var(--c-line);padding-top:16px;}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:15px;
}
.quote-name{font-size:14.5px;font-weight:600;color:var(--c-ink);line-height:1.4;}
.quote-role{font-size:13px;color:var(--c-ink-3);line-height:1.4;}
.quote-offset{margin-top:30px;}
.partner-row{
  margin-top:56px;padding-top:28px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px 34px;align-items:center;
}
.partner-row span{
  font-size:13.5px;color:var(--c-ink-3);letter-spacing:.06em;
}
@media (max-width:1023px){.quote-offset{margin-top:0;}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);overflow:hidden;transition:border-color .24s ease,background .24s ease;
}
.faq-item.is-open{border-color:#CFDCE4;background:var(--c-primary-soft);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--c-ink);line-height:1.5;
  transition:color .24s ease;
}
.faq-item.is-open .faq-q{color:var(--c-primary-dark);}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  position:relative;flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--c-line);background:var(--c-surface);
  transition:background .24s ease,border-color .24s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary-dark);
  transform:translate(-50%,-50%);transition:opacity .24s ease,transform .24s ease;
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-icon{background:var(--c-primary);border-color:var(--c-primary);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
.faq-a{padding:0 22px 22px;}
.faq-a p{margin:0;font-size:15px;color:var(--c-ink-2);}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{color:var(--c-ink-2);font-size:15.5px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--c-primary-dark);color:#EAF2F6;
  border-radius:var(--r-l);padding:52px 48px;margin:0 auto;
  box-shadow:var(--sh-1);
}
.cta-band h2{color:#FFFFFF;margin-bottom:14px;}
.cta-band p{color:rgba(234,242,246,.82);margin:0;font-size:15.5px;max-width:38em;}
.cta-form-card{
  background:#FFFFFF;color:var(--c-ink);border-radius:var(--r-m);
  padding:24px;box-shadow:var(--sh-2);
}
.cta-form-card h3{font-size:17px;margin-bottom:6px;}
.cta-form-card .hint{font-size:13px;color:var(--c-ink-3);margin-bottom:16px;}
.subscribe-form{display:flex;flex-direction:column;gap:12px;}
.subscribe-form input[type="email"]{
  height:48px;border-radius:10px;border:1px solid var(--c-line);
  padding:0 16px;background:#FCFBF8;color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.subscribe-form input[type="email"]::placeholder{color:var(--c-ink-3);}
.subscribe-form input[type="email"]:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(44,95,124,.12);
}
.form-note{font-size:13px;margin:0;min-height:18px;color:var(--c-ink-3);}
.form-note.is-error{color:var(--c-accent);}
.form-note.is-ok{color:var(--c-primary);}
@media (max-width:1023px){
  .cta-band{padding:40px 30px;}
}
@media (max-width:639px){
  .cta-band{padding:32px 20px;border-radius:var(--r-m);}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-dark);color:rgba(240,246,249,.86);
  padding:72px 0 0;margin-top:96px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--c-primary-dark);}
.footer-brand .brand-text{color:#FFFFFF;}
.site-footer p{font-size:14px;color:rgba(240,246,249,.7);margin:0;}
.footer-col h4{
  font-family:var(--sans);font-size:14px;letter-spacing:.1em;font-weight:600;
  color:#FFFFFF;margin:0 0 16px;text-transform:uppercase;
}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(240,246,249,.78);font-size:14px;}
.footer-col a:hover{color:#FFFFFF;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(240,246,249,.16);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:13px;color:rgba(240,246,249,.6);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(240,246,249,.8);
  border:1px solid rgba(240,246,249,.28);border-radius:999px;
  padding:7px 16px;background:transparent;cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.to-top:hover{background:rgba(240,246,249,.12);color:#fff;border-color:rgba(240,246,249,.5);}
@media (max-width:1023px){
  .site-footer{padding-top:56px;margin-top:72px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:639px){
  .site-footer{padding-top:44px;margin-top:56px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --c-primary:#2C5F7C;
  --c-primary-dark:#1E475F;
  --c-primary-soft:#E7EFF4;
  --c-accent:#C0763A;
  --c-accent-soft:#FBF1E6;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-ink:#14232C;
  --c-ink-2:#4A5F6B;
  --c-ink-3:#8797A0;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,44,.05),0 8px 20px -12px rgba(20,35,44,.14);
  --sh-2:0 2px 4px rgba(20,35,44,.06),0 18px 34px -16px rgba(20,35,44,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --wrap:1200px;
}

*,*::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:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:var(--c-primary-soft);color:var(--c-primary-dark)}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 28px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);color:#fff}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.btn-light{background:#F7F5F0;color:var(--c-primary-dark)}
.btn-light:hover{background:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--c-primary-dark)}
.btn-outline-light{background:transparent;color:#F3F0E9;border-color:rgba(243,240,233,.55)}
.btn-outline-light:hover{background:rgba(243,240,233,.14);border-color:#F3F0E9;color:#fff}

.link-more{color:var(--c-primary);font-size:15px;font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.link-more:hover{color:var(--c-accent);text-decoration-thickness:2px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.badge-accent{background:var(--c-accent-soft);color:#9C5E2B}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  height:84px;display:flex;align-items:center;
  background:rgba(247,245,240,.88);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:height .26s ease,background-color .26s ease,border-color .26s ease;
}
.site-header.is-scrolled{height:64px;background:rgba(247,245,240,.95);border-bottom-color:var(--c-line)}
.site-header .wrap{width:100%}
.nav-desktop{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:22px}
.nav-left{display:flex;align-items:center;gap:26px}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:26px}
.nav-left a,.nav-right a.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;font-weight:500}
.nav-left a::after,.nav-right a.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-left a:hover,.nav-right a.nav-link:hover{color:var(--c-primary)}
.nav-left a:hover::after,.nav-right a.nav-link:hover::after{transform:scaleX(1)}
.nav-left a.active,.nav-right a.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-left a.active::after,.nav-right a.nav-link.active::after{transform:scaleX(1)}

.brand{display:inline-flex;align-items:center;gap:11px;justify-self:center}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;
  font-family:var(--font-serif);font-size:20px;font-weight:700;line-height:1;
  box-shadow:var(--sh-1);
}
.brand-text{font-family:var(--font-serif);font-size:20px;font-weight:700;letter-spacing:.02em;color:var(--c-ink)}

.nav-mobile{display:none;align-items:center;justify-content:space-between;width:100%}
.menu-toggle{width:44px;height:44px;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:10px}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .24s ease,opacity .24s ease}
.menu-toggle:hover{background:var(--c-primary-soft)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(20,35,44,.45);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  padding:18px 0 24px;
  transform:translateY(-102%);transition:transform .3s ease;
}
.mobile-drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 14px;border-bottom:1px solid var(--c-line)}
.drawer-close{width:40px;height:40px;border-radius:10px;font-size:20px;color:var(--c-ink-2);line-height:1}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 20px;font-size:15px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a:last-child{border-bottom:0}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-cta{padding:16px 20px 0}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:52px 0 44px;
  border-bottom:1px solid var(--c-line);
  background-image:linear-gradient(180deg,rgba(231,239,244,.78),rgba(247,245,240,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-ink-3);margin-bottom:18px}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-ink-3);opacity:.7}
.breadcrumb .current{max-width:340px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--c-ink-3)}
.article-title{
  font-family:var(--font-serif);
  font-size:clamp(28px,3.4vw,42px);
  font-weight:700;line-height:1.3;letter-spacing:.01em;
  max-width:920px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:22px;font-size:13.5px;color:var(--c-ink-2)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--c-ink-3);display:inline-block}

/* ============ 正文 ============ */
.article-main{padding:60px 0 72px}
.article-shell{max-width:820px;margin:0 auto}
.article-body{
  font-size:17px;line-height:1.85;color:var(--c-ink);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  padding:44px 48px;
  overflow-wrap:break-word;word-break:break-word;
}
.article-body p{margin:0 0 20px}
.article-body p:last-child{margin-bottom:0}
.article-body h2{
  font-family:var(--font-serif);font-size:clamp(22px,2.2vw,27px);font-weight:700;line-height:1.4;
  margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-family:var(--font-serif);font-size:20px;font-weight:600;line-height:1.45;margin:32px 0 12px;color:var(--c-ink)}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.article-body ul,.article-body ol{list-style:disc;margin:0 0 20px;padding-left:22px}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body li::marker{color:var(--c-primary)}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--c-primary-soft);color:var(--c-ink-2);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-m) var(--r-m) 0;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;height:auto;border-radius:12px;margin:26px 0;background:var(--c-primary-soft)}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-ink-3);margin-top:10px}
.article-body a{color:var(--c-primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{color:var(--c-accent);text-decoration-thickness:2px}
.article-body strong{font-weight:700;color:var(--c-ink)}
.article-body pre{
  background:#12222B;color:#E7EFF4;padding:18px 20px;border-radius:var(--r-m);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:var(--c-primary-soft);color:var(--c-primary-dark);padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;white-space:normal}
.article-body th{background:var(--c-primary-soft);font-weight:600;color:var(--c-primary-dark)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:34px 0}

.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--c-bg);border:1px dashed var(--c-line);border-radius:var(--r-m);
}
.empty-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center;color:var(--c-primary)}
.empty-title{font-family:var(--font-serif);font-size:20px;font-weight:700;margin-bottom:8px}
.empty-text{color:var(--c-ink-2);font-size:15px;margin-bottom:22px}

/* ============ 文末标签 ============ */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:26px;padding-top:24px;border-top:1px solid var(--c-line);
}
.tag-label{font-size:13px;color:var(--c-ink-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--c-surface);border:1px solid var(--c-line);
  font-size:13px;color:var(--c-ink-2);transition:all .22s ease;
}
.tag:hover{background:var(--c-primary-soft);border-color:var(--c-primary);color:var(--c-primary-dark)}

/* ============ 板块通用 ============ */
.section{padding:80px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-head h2{font-family:var(--font-serif);font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35}
.section-head p{color:var(--c-ink-2);font-size:15px;margin-top:8px;max-width:640px}

/* ============ 继续了解卡片 ============ */
.rec-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6CFC2}
.rec-card .badge{align-self:flex-start;margin-bottom:16px}
.rec-card h3{font-family:var(--font-serif);font-size:20px;font-weight:700;line-height:1.4;margin-bottom:10px}
.rec-card p{color:var(--c-ink-2);font-size:14.5px;line-height:1.75;margin-bottom:20px;flex:1 1 auto}
.rec-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary)}
.rec-card:hover .rec-arrow{color:var(--c-accent)}
.rec-arrow::after{content:"→";transition:transform .25s ease}
.rec-card:hover .rec-arrow::after{transform:translateX(4px)}

/* ============ CTA ============ */
.cta-band{background:var(--c-primary-dark);color:#F3F0E9;padding:72px 0}
.cta-inner{display:grid;grid-template-columns:1.25fr 1fr;gap:44px;align-items:center}
.cta-inner h2{font-family:var(--font-serif);font-size:clamp(23px,2.4vw,31px);font-weight:700;line-height:1.35;color:#fff;margin-bottom:14px}
.cta-inner p{font-size:15px;line-height:1.8;color:rgba(243,240,233,.82);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-dark);color:rgba(243,240,233,.78);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--c-primary-dark);box-shadow:none}
.footer-brand .brand-text{color:#fff}
.site-footer p{font-size:14px;line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(243,240,233,.78)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(243,240,233,.16);
  font-size:13px;color:rgba(243,240,233,.6);
}
.to-top{
  height:36px;padding:0 16px;border-radius:var(--r-pill);font-size:13px;
  border:1px solid rgba(243,240,233,.35);color:rgba(243,240,233,.9);
  transition:background-color .22s ease,border-color .22s ease,color .22s ease;
}
.to-top:hover{background:rgba(243,240,233,.14);border-color:#fff;color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-desktop{display:none}
  .nav-mobile{display:flex}
  .wrap{padding:0 24px}
  .section{padding:72px 0}
  .article-body{padding:36px 32px}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .site-header{height:68px}
  .site-header.is-scrolled{height:60px}
  .section{padding:56px 0}
  .article-hero{padding:36px 0 32px}
  .article-main{padding:36px 0 52px}
  .article-body{padding:26px 20px;font-size:16.5px;border-radius:var(--r-m)}
  .breadcrumb .current{max-width:180px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .cta-band{padding:54px 0}
  .site-footer{padding:52px 0 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .rec-card{padding:22px 20px}
}
@media (max-width:519px){
  .article-title{-webkit-line-clamp:3}
  .article-meta{gap:8px 16px}
  .brand-text{font-size:18px}
  .brand-mark{width:36px;height:36px;font-size:18px;border-radius:10px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --c-primary:#2C5F7C;
  --c-primary-dark:#1E475F;
  --c-primary-soft:#E7EFF4;
  --c-accent:#C0763A;
  --c-accent-soft:#FBF1E6;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-ink:#14232C;
  --c-ink-2:#4A5F6B;
  --c-ink-3:#8797A0;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,44,.05), 0 8px 20px -12px rgba(20,35,44,.14);
  --sh-2:0 2px 4px rgba(20,35,44,.06), 0 18px 34px -16px rgba(20,35,44,.22);
  --f-serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --f-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0;font-family:var(--f-serif);color:var(--c-ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
button{font-family:var(--f-sans);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
section[id]{scroll-margin-top:100px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* 容器 */
.wrap,.grid-container{
  width:100%;
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:28px;
  padding-right:28px;
}
@media screen and (max-width:1023px){
  .wrap,.grid-container{padding-left:24px;padding-right:24px;}
}
@media screen and (max-width:639px){
  .wrap,.grid-container{padding-left:18px;padding-right:18px;}
}
.grid-x.gutter{margin-left:-14px;margin-right:-14px;}
.grid-x.gutter > .cell{padding-left:14px;padding-right:14px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--c-line);
  box-shadow:0 8px 20px -16px rgba(20,35,44,.55);
}
.nav-desktop{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:84px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-desktop{height:64px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-left a:not(.btn),.nav-right a:not(.btn){
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.nav-left a:not(.btn)::after,.nav-right a:not(.btn)::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.nav-left a:not(.btn):hover::after,.nav-right a:not(.btn):hover::after,
.nav-left a.active::after,.nav-right a.active::after{transform:scaleX(1);}
.nav-left a:not(.btn):hover,.nav-right a:not(.btn):hover{color:var(--c-primary);}
.nav-left a.active,.nav-right a.active{color:var(--c-primary);font-weight:600;}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;color:var(--c-ink);}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:9px;
  background:var(--c-primary);
  color:#fff;
  display:grid;place-items:center;
  font-family:var(--f-serif);
  font-size:18px;font-weight:700;line-height:1;
}
.brand-text{font-family:var(--f-serif);font-size:20px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.nav-mobile{display:none;align-items:center;justify-content:space-between;height:64px;}
.menu-toggle{
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;padding:0;
  transition:background .22s ease,border-color .22s ease;
}
.menu-toggle:hover{background:var(--c-primary-soft);border-color:var(--c-primary);}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
@media screen and (max-width:1023px){
  .nav-desktop{display:none;}
  .nav-mobile{display:flex;}
}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;left:0;right:0;
  z-index:200;
  background:var(--c-primary-dark);
  color:#EFEAE2;
  padding:18px 0 26px;
  transform:translateY(-104%);
  transition:transform .3s ease;
  box-shadow:0 24px 40px -24px rgba(20,35,44,.6);
}
.drawer.open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.14);}
.drawer-head .brand-text{color:#fff;}
.drawer-head .brand-mark{background:#F3EFE8;color:var(--c-primary-dark);}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.28);
  background:transparent;color:#F3EFE8;font-size:18px;line-height:1;cursor:pointer;transition:background .22s ease;
}
.drawer-close:hover{background:rgba(255,255,255,.14);}
.drawer nav{padding-top:8px;}
.drawer nav a{
  display:block;
  padding:15px 2px;
  color:#E4DED4;
  font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer nav a:hover,.drawer nav a.active{color:#fff;}
.drawer nav a.active{font-weight:600;}
.drawer-mask{
  position:fixed;inset:0;z-index:190;
  background:rgba(20,35,44,.46);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:background .24s ease,color .24s ease,transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);}
.btn-light{background:#F3EFE8;color:var(--c-primary-dark);}
.btn-light:hover{background:#fff;color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#F3EFE8;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:8px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-alt{background:#fff;}
.section-tight{padding:72px 0;}
.section-head{max-width:780px;margin-bottom:48px;}
.eyebrow{
  display:inline-block;
  padding:5px 13px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.18em;
}
.sec-title{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.3;
  font-weight:700;
  margin:16px 0 14px;
}
.sec-lead{color:var(--c-ink-2);font-size:16px;line-height:1.85;}
.divider{height:1px;background:var(--c-line);border:0;margin:0;}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;background:var(--c-primary-dark);color:#F4F1EB;}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(30,71,95,.95) 0%,rgba(30,71,95,.72) 56%,rgba(30,71,95,.38) 100%);
}
.page-hero .grid-container{position:relative;z-index:2;padding-top:80px;padding-bottom:76px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(244,241,235,.7);margin-bottom:22px;}
.crumb a{color:rgba(244,241,235,.82);}
.crumb a:hover{color:#fff;}
.crumb span{color:rgba(244,241,235,.45);}
.hero-eyebrow{
  display:inline-block;padding:5px 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);color:#DCE9F0;
  font-size:12px;font-weight:600;letter-spacing:.18em;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,3.6vw,46px);
  line-height:1.25;
  letter-spacing:.01em;
  margin:18px 0 18px;
  max-width:840px;
}
.hero-sub{
  max-width:720px;
  font-size:17px;
  line-height:1.85;
  color:rgba(244,241,235,.86);
}
.hero-anchors{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-anchors a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.32);
  background:rgba(255,255,255,.08);
  color:#F4F1EB;font-size:14px;font-weight:500;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.hero-anchors a:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.6);color:#fff;transform:translateY(-1px);}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;
  margin-top:44px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-stat{padding-right:36px;margin-right:36px;border-right:1px solid rgba(255,255,255,.18);}
.hero-stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stat strong{display:block;font-family:var(--f-serif);font-size:24px;font-weight:700;color:#fff;line-height:1.3;}
.hero-stat span{font-size:13px;color:rgba(244,241,235,.7);}

/* ============ 定义列表 ============ */
.anchor-nav{position:sticky;top:110px;}
.anchor-nav .anchor-label{
  font-size:12px;letter-spacing:.16em;font-weight:600;color:var(--c-ink-3);
  display:block;margin-bottom:12px;
}
.anchor-nav ul{list-style:none;}
.anchor-nav a{
  display:block;
  padding:11px 16px;
  border-left:2px solid var(--c-line);
  color:var(--c-ink-2);
  font-size:15px;
  transition:all .22s ease;
}
.anchor-nav a:hover,.anchor-nav a.active{
  border-left-color:var(--c-primary);
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
@media screen and (max-width:1023px){
  .anchor-nav{position:static;margin-bottom:32px;}
  .anchor-nav ul{display:flex;flex-wrap:wrap;gap:10px;}
  .anchor-nav a{border-left:0;border:1px solid var(--c-line);border-radius:var(--r-pill);padding:8px 16px;background:#fff;}
  .anchor-nav a:hover,.anchor-nav a.active{border-color:var(--c-primary);}
}
.def-list{list-style:none;border-top:1px solid var(--c-line);}
.def-item{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:28px;
  padding:24px 0;
  border-bottom:1px solid var(--c-line);
}
.def-item dt{font-family:var(--f-serif);font-size:18px;font-weight:700;color:var(--c-ink);}
.def-item dd{margin:0;color:var(--c-ink-2);font-size:15.5px;line-height:1.85;}
@media screen and (max-width:639px){
  .def-item{grid-template-columns:1fr;gap:8px;}
}

/* ============ 步骤 ============ */
.steps{display:grid;gap:18px;}
.step{
  display:grid;
  grid-template-columns:60px 1fr;
  gap:20px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  padding:24px 26px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-num{
  height:56px;width:56px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--c-accent-soft);
  color:var(--c-accent);
  font-family:var(--f-serif);
  font-size:20px;font-weight:700;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.step p{color:var(--c-ink-2);font-size:15px;line-height:1.8;}

/* ============ 图文 ============ */
.figure-block{position:relative;border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-1);background:var(--c-primary-soft);}
.figure-block img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s ease;}
.figure-block:hover img{transform:scale(1.03);}
.figure-cap{font-size:13px;color:var(--c-ink-3);margin-top:12px;text-align:center;}
.point-list{list-style:none;display:grid;gap:20px;}
.point-list li{
  padding:20px 22px;
  background:#fff;
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-m);
  transition:box-shadow .25s ease,transform .25s ease;
}
.point-list li:hover{box-shadow:var(--sh-1);transform:translateX(3px);}
.point-list h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.point-list p{color:var(--c-ink-2);font-size:15px;line-height:1.8;}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:30px;}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--c-line);}
.tl-item{position:relative;padding-bottom:28px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:7px;
  width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);
}
.tl-time{font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--c-accent);}
.tl-item h3{font-size:17px;font-weight:600;margin:6px 0 6px;}
.tl-item p{color:var(--c-ink-2);font-size:15px;line-height:1.8;}

/* ============ 场景卡 ============ */
.scene-card{
  height:100%;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6D0C4;}
.scene-icon{
  width:46px;height:46px;border-radius:12px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  display:grid;place-items:center;
  font-family:var(--f-serif);font-weight:700;font-size:17px;
  margin-bottom:16px;
}
.scene-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.scene-card p{color:var(--c-ink-2);font-size:15px;line-height:1.8;}
@media screen and (min-width:640px){
  .scene-grid .cell:nth-child(even) .scene-card{margin-top:32px;}
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-m);overflow:hidden;box-shadow:var(--sh-1);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 26px;
  background:transparent;border:0;
  font-size:17px;font-weight:600;color:var(--c-ink);
  text-align:left;cursor:pointer;
  transition:background .22s ease,color .22s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-item.open .faq-q{color:var(--c-primary);background:var(--c-primary-soft);}
.faq-icon{
  position:relative;flex:0 0 28px;
  width:28px;height:28px;border-radius:50%;
  border:1px solid var(--c-line);
  background:#fff;
  transition:border-color .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  background:var(--c-primary);border-radius:2px;
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;transition:transform .24s ease;}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-item.open .faq-icon{border-color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 26px 24px;color:var(--c-ink-2);font-size:15.5px;line-height:1.85;}
@media screen and (max-width:1023px){
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
}

/* ============ 交叉链接 ============ */
.cross-list{display:grid;gap:14px;}
.cross-item{
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  padding:22px 26px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  color:var(--c-ink);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cross-item:hover{transform:translateX(4px);border-color:var(--c-primary);box-shadow:var(--sh-1);color:var(--c-ink);}
.cross-item h3{font-size:17px;font-weight:600;margin-bottom:4px;}
.cross-item p{color:var(--c-ink-2);font-size:14.5px;}
.cross-arrow{color:var(--c-primary);font-size:20px;flex:0 0 auto;transition:transform .25s ease;}
.cross-item:hover .cross-arrow{transform:translateX(4px);}

/* ============ CTA ============ */
.cta-band{
  background:var(--c-primary-dark);
  border-radius:var(--r-l);
  padding:56px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  color:#F3EFE8;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.2vw,30px);line-height:1.32;margin-bottom:14px;}
.cta-band p{color:rgba(243,239,232,.8);font-size:15.5px;line-height:1.85;}
.cta-form-card{background:#fff;border-radius:var(--r-m);padding:26px;box-shadow:var(--sh-2);}
.cta-form-card h3{font-family:var(--f-sans);font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:6px;}
.cta-form-card p{color:var(--c-ink-2);font-size:14px;margin-bottom:16px;}
.subscribe-form{display:grid;gap:12px;}
.subscribe-form input{
  height:48px;width:100%;
  padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:#FDFCFA;
  font-size:15px;color:var(--c-ink);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.subscribe-form input::placeholder{color:var(--c-ink-3);}
.subscribe-form input:focus{
  outline:none;background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(44,95,124,.12);
}
.subscribe-form input.is-error{border-color:var(--c-accent);}
.subscribe-form .btn{width:100%;}
.form-msg{font-size:13.5px;color:var(--c-accent);min-height:20px;}
.form-msg.ok{color:var(--c-primary);}
@media screen and (max-width:1023px){
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px 28px;}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-dark);color:#E6E0D6;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;}
.footer-brand:hover{color:#fff;}
.footer-brand .brand-mark{background:#F3EFE8;color:var(--c-primary-dark);}
.footer-brand .brand-text{color:#fff;font-size:19px;}
.site-footer p{color:rgba(240,235,226,.72);font-size:14px;line-height:1.85;}
.footer-col h4{font-family:var(--f-sans);font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;display:grid;gap:10px;}
.footer-col a{color:rgba(240,235,226,.72);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
}
.footer-bottom p{font-size:13px;color:rgba(240,235,226,.6);}
.to-top{
  padding:9px 20px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.3);
  background:transparent;color:#EDE7DE;
  font-size:13px;cursor:pointer;
  transition:background .22s ease,border-color .22s ease;
}
.to-top:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.55);}
@media screen and (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media screen and (max-width:639px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:56px 0 24px;}
}

/* 响应式微调 */
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .section-head{margin-bottom:36px;}
  .page-hero .grid-container{padding-top:56px;padding-bottom:56px;}
}
@media screen and (max-width:639px){
  .section{padding:56px 0;}
  .hero-stats{gap:20px;}
  .hero-stat{border-right:0;padding-right:0;margin-right:0;width:100%;}
  .step{grid-template-columns:1fr;gap:14px;padding:22px 20px;}
  .step-num{height:46px;width:46px;font-size:18px;}
  .cta-band{padding:32px 20px;border-radius:var(--r-m);}
  .cross-item{padding:20px;}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#2C5F7C;
  --c-primary-dark:#1E475F;
  --c-primary-soft:#E7EFF4;
  --c-accent:#C0763A;
  --c-accent-soft:#FBF1E6;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-ink:#14232C;
  --c-ink-2:#4A5F6B;
  --c-ink-3:#8797A0;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(20,35,44,.05),0 8px 20px -12px rgba(20,35,44,.14);
  --sh-2:0 2px 4px rgba(20,35,44,.06),0 18px 34px -16px rgba(20,35,44,.22);
  --t:.24s ease;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--c-ink);
  margin:0;
  font-weight:700;
  letter-spacing:.01em;
}
h1{font-size:clamp(30px,3.6vw,46px);line-height:1.25;}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 16px;color:var(--c-ink-2);}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t);}
a:hover{color:var(--c-primary-dark);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ===== 容器与栅格 ===== */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 28px;}
.grid-x{margin-left:0;margin-right:0;}
.grid-x>.cell{padding-left:0;padding-right:0;}
.gutter{margin-left:-14px;margin-right:-14px;}
.gutter>.cell{padding-left:14px;padding-right:14px;}
.row-gap{margin-bottom:28px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-light{background:#F7F5F0;color:var(--c-primary-dark);}
.btn-light:hover{background:#fff;color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(20,35,44,.5);}
.nav-desktop{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  min-height:84px;transition:min-height var(--t);
}
.site-header.is-scrolled .nav-desktop{min-height:64px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:24px;}
.nav-left{justify-self:start;}
.nav-right{justify-self:end;}
.nav-left a,.nav-right a:not(.btn){
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);
  padding:6px 0;letter-spacing:.01em;
}
.nav-left a::after,.nav-right a:not(.btn)::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-left a:hover,.nav-right a:not(.btn):hover{color:var(--c-primary);}
.nav-left a:hover::after,.nav-right a:not(.btn):hover::after{transform:scaleX(1);}
.nav-left a.active,.nav-right a.active{color:var(--c-primary);font-weight:600;}
.nav-left a.active::after,.nav-right a.active::after{transform:scaleX(1);}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;
  background:var(--c-primary);color:#fff;
  font-family:var(--serif);font-size:18px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-text{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--c-ink);letter-spacing:.02em;}
.brand:hover .brand-text{color:var(--c-primary-dark);}

.nav-mobile{display:none;align-items:center;justify-content:space-between;min-height:64px;}
.menu-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;transition:background var(--t),border-color var(--t);
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.menu-toggle:hover{border-color:var(--c-primary);}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.drawer-backdrop{
  position:fixed;inset:0;background:rgba(20,35,44,.42);z-index:95;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:96;
  background:var(--c-bg);border-bottom:1px solid var(--c-line);
  padding:18px 24px 26px;
  transform:translateY(-102%);transition:transform .28s ease;
  box-shadow:var(--sh-2);
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line);}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink-2);font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.mobile-drawer ul{margin:6px 0 18px;}
.mobile-drawer li{border-bottom:1px solid var(--c-line);}
.mobile-drawer li a{display:flex;align-items:center;min-height:48px;font-size:15px;color:var(--c-ink-2);}
.mobile-drawer li a.active{color:var(--c-primary);font-weight:600;}
.mobile-drawer .btn{width:100%;}

/* ===== 通用板块 ===== */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.sec-head{margin-bottom:44px;max-width:760px;}
.sec-head h2{margin-bottom:14px;}
.sec-head p{font-size:16px;color:var(--c-ink-2);}
.sec-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.18em;
  padding:5px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  margin-bottom:18px;text-transform:uppercase;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:999px;
}
.badge-soft{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent);}
.badge-line{background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-2);}
.arrow-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary);}
.arrow-link i{transition:transform var(--t);font-size:12px;}
.arrow-link:hover i{transform:translateX(4px);}

/* ===== 分类 Hero ===== */
.cat-hero{
  position:relative;
  padding:80px 0 72px;
  background-image:linear-gradient(180deg,rgba(247,245,240,.95) 0%,rgba(247,245,240,.9) 55%,#F7F5F0 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.cat-hero .grid-x{align-items:center;}
.hero-copy h1{margin:14px 0 20px;}
.hero-copy h1 .hl{color:var(--c-primary);}
.hero-sub{font-size:17px;max-width:540px;color:var(--c-ink-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:30px;padding-top:24px;border-top:1px solid var(--c-line);}
.hero-stats .stat strong{
  display:block;font-family:var(--serif);font-size:26px;font-weight:700;color:var(--c-primary-dark);line-height:1.2;
}
.hero-stats .stat span{font-size:13px;color:var(--c-ink-3);}

.rank-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-l);
  box-shadow:var(--sh-2);padding:24px 24px 20px;
}
.rank-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap;}
.rank-updated{font-size:12px;color:var(--c-ink-3);}
.rank-list li{
  display:flex;align-items:center;gap:12px;
  padding:12px 0;border-bottom:1px solid var(--c-line);font-size:14px;
}
.rank-list li:last-child{border-bottom:0;}
.rk-pos{
  width:26px;height:26px;flex:0 0 auto;border-radius:8px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.rank-list li:first-child .rk-pos{background:var(--c-primary);color:#fff;}
.rk-name{flex:1 1 auto;color:var(--c-ink);font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.rk-num{font-size:12px;color:var(--c-ink-3);}
.rk-pts{font-family:var(--serif);font-weight:700;color:var(--c-primary-dark);min-width:34px;text-align:right;}
.rk-delta{font-size:12px;font-weight:700;min-width:32px;text-align:right;}
.rk-delta.up{color:var(--c-accent);}
.rk-delta.down{color:var(--c-ink-3);}
.rank-note{margin-top:16px;font-size:12px;color:var(--c-ink-3);line-height:1.7;}

.anchor-bar{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  padding:18px 0 0;margin-top:8px;
}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-ink-2);
  padding:9px 16px;border-radius:999px;border:1px solid var(--c-line);background:var(--c-surface);
  transition:border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.anchor-bar a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-1);}
.anchor-bar a i{font-size:12px;color:var(--c-accent);}

/* ===== 口径说明（左标题 + 右堆叠条目） ===== */
.criteria-list{border-top:1px solid var(--c-line);}
.criteria-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:22px 0;border-bottom:1px solid var(--c-line);
}
.criteria-ico{
  width:38px;height:38px;flex:0 0 auto;border-radius:10px;
  background:var(--c-accent-soft);color:var(--c-accent);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
}
.criteria-item h3{margin-bottom:6px;font-size:18px;}
.criteria-item p{margin:0;font-size:15px;}

/* ===== 榜单类型卡片 ===== */
.type-card{
  height:100%;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:28px 26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.type-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6CFC2;}
.type-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.type-ico{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
}
.type-card h3{margin-bottom:10px;}
.type-card p{font-size:15px;margin-bottom:18px;}
.type-card .arrow-link{margin-top:auto;}

/* ===== 流程步骤 ===== */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:26px;}
.steps::before{
  content:"";position:absolute;top:23px;left:4%;right:4%;height:1px;background:var(--c-line);
}
.step{position:relative;padding-top:0;}
.step-num{
  position:relative;z-index:1;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-surface);border:1px solid var(--c-line);
  color:var(--c-primary);font-family:var(--serif);font-weight:700;font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
  box-shadow:var(--sh-1);
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;margin:0;}

/* ===== 图文区块 ===== */
.media-block{align-items:center;}
.media-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-l);
  border:1px solid var(--c-line);background:var(--c-primary-soft);box-shadow:var(--sh-1);
}
.media-cap{font-size:13px;color:var(--c-ink-3);margin-top:12px;text-align:center;}
.check-list{margin:22px 0 26px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:11px 0;border-bottom:1px dashed var(--c-line);font-size:15px;color:var(--c-ink-2);
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--c-primary);font-size:14px;margin-top:6px;}

/* ===== 适用场景 ===== */
.scene-list{border-top:1px solid var(--c-line);}
.scene-item{
  display:grid;grid-template-columns:64px 1fr 1.4fr;gap:22px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--c-line);
  transition:background var(--t),padding-left var(--t);
}
.scene-item:hover{background:rgba(255,255,255,.7);padding-left:10px;}
.scene-idx{font-family:var(--serif);font-size:22px;font-weight:700;color:var(--c-accent);}
.scene-item h3{margin:0;font-size:19px;}
.scene-item p{margin:0;font-size:15px;}

/* ===== FAQ ===== */
.faq-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);overflow:hidden;box-shadow:var(--sh-1);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);
  background:transparent;transition:background var(--t),color var(--t);
}
.faq-q:hover{color:var(--c-primary);}
.faq-ico{
  width:28px;height:28px;flex:0 0 auto;border-radius:50%;
  border:1px solid var(--c-line);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;
  transition:transform var(--t),background var(--t),border-color var(--t),color var(--t);
}
.faq-item.is-open .faq-q{background:var(--c-primary-soft);color:var(--c-primary);}
.faq-item.is-open .faq-ico{background:var(--c-primary);border-color:var(--c-primary);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);}

/* ===== 交叉链接 ===== */
.cross-list{border-top:1px solid var(--c-line);}
.cross-item{
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  padding:24px 0;border-bottom:1px solid var(--c-line);
  transition:padding-left var(--t);
}
.cross-item:hover{padding-left:10px;}
.cross-item h3{margin-bottom:6px;font-size:18px;}
.cross-item p{margin:0;font-size:14.5px;}
.cross-item .arrow-link{flex:0 0 auto;}

/* ===== CTA 通栏 ===== */
.cta-band{
  position:relative;color:#F7F5F0;
  background-color:var(--c-primary-dark);
  background-image:linear-gradient(90deg,rgba(30,71,95,.96) 0%,rgba(30,71,95,.86) 100%),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  border-radius:var(--r-l);
  padding:56px 48px;
}
.cta-band .grid-x{align-items:center;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(247,245,240,.82);font-size:15.5px;}
.cta-form-card{background:var(--c-surface);border-radius:var(--r-m);padding:26px;box-shadow:var(--sh-2);}
.cta-form-card h3{font-size:18px;margin-bottom:8px;}
.cta-form-card p{font-size:13.5px;margin-bottom:16px;color:var(--c-ink-3);}
.field{display:flex;gap:10px;flex-wrap:wrap;}
.field input{
  flex:1 1 200px;height:48px;padding:0 16px;border-radius:10px;
  border:1px solid var(--c-line);background:var(--c-bg);color:var(--c-ink);font-size:15px;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field input::placeholder{color:var(--c-ink-3);}
.field input:focus{outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(44,95,124,.12);}
.form-tip{font-size:12.5px;color:var(--c-ink-3);margin-top:12px;}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-primary-dark);color:rgba(247,245,240,.78);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--c-primary-dark);}
.footer-brand .brand-text{color:#fff;}
.site-footer p{color:rgba(247,245,240,.7);font-size:14px;line-height:1.8;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(247,245,240,.72);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(247,245,240,.16);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;margin:0;}
.to-top{
  border:1px solid rgba(247,245,240,.28);color:#F7F5F0;
  height:38px;padding:0 16px;border-radius:999px;font-size:13px;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.to-top:hover{background:#F7F5F0;color:var(--c-primary-dark);border-color:#F7F5F0;}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .nav-desktop{display:none;}
  .nav-mobile{display:flex;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .wrap{padding:0 24px;}
  .cat-hero{padding:56px 0 52px;}
  .hero-sub{max-width:none;}
  .steps{grid-template-columns:repeat(2,1fr);gap:30px 24px;}
  .steps::before{display:none;}
  .scene-item{grid-template-columns:52px 1fr;gap:14px 18px;}
  .scene-item p{grid-column:2/3;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-band{padding:44px 32px;}
  .site-footer{margin-top:72px;padding-top:56px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 200px;}
  .hero-stats{gap:22px;}
  .hero-stats .stat{min-width:44%;}
  .rank-card{padding:20px 18px 16px;margin-top:34px;}
  .criteria-item{gap:14px;}
  .faq-q{padding:17px 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cross-item{flex-direction:column;align-items:flex-start;gap:12px;}
  .steps{grid-template-columns:1fr;}
  .media-figure{margin-bottom:28px;}
}
@media (max-width:520px){
  .wrap{padding:0 18px;}
  .brand-text{font-size:18px;}
  .cta-band{padding:34px 22px;border-radius:var(--r-m);}
  .cta-form-card{padding:20px;margin-top:24px;}
  .field .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .rank-list li{gap:8px;font-size:13px;}
  .rk-num{display:none;}
  .rk-delta{min-width:28px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#2C5F7C;
  --c-primary-dark:#1E475F;
  --c-primary-soft:#E7EFF4;
  --c-accent:#C0763A;
  --c-accent-soft:#FBF1E6;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-ink:#14232C;
  --c-ink-2:#4A5F6B;
  --c-ink-3:#8797A0;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(20,35,44,.05),0 8px 20px -12px rgba(20,35,44,.14);
  --sh-2:0 2px 4px rgba(20,35,44,.06),0 18px 34px -16px rgba(20,35,44,.22);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --sp-s:24px;
  --sp-m:32px;
  --sp-l:48px;
}
*,*::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:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--c-ink);margin:0;letter-spacing:.01em}
h1{font-size:clamp(30px,3.6vw,46px);font-weight:700;line-height:1.25}
h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 16px;padding-left:20px}
button{font:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-alt{background:var(--c-surface)}
.section-line{border-top:1px solid var(--c-line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 14px;border-radius:999px;font-weight:600;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;font-weight:600;
  padding:6px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head p{color:var(--c-ink-2);max-width:640px;margin-top:10px}
.text-link{color:var(--c-primary);border-bottom:1px solid var(--c-primary);padding-bottom:2px;font-weight:600}
.text-link:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.btn-light{background:#F7F5F0;color:var(--c-primary-dark)}
.btn-light:hover{background:#fff;color:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:background-color .26s ease,box-shadow .26s ease;
}
.site-header.is-scrolled{background:rgba(247,245,240,.92);box-shadow:0 6px 18px -14px rgba(20,35,44,.35)}
.nav-desktop{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  min-height:84px;transition:min-height .26s ease;
}
.site-header.is-scrolled .nav-desktop{min-height:64px}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-left>a,.nav-right>a:not(.btn){
  position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);padding:6px 0;
}
.nav-left>a::after,.nav-right>a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width .25s ease;
}
.nav-left>a:hover,.nav-right>a:not(.btn):hover{color:var(--c-primary)}
.nav-left>a:hover::after,.nav-right>a:not(.btn):hover::after{width:100%}
.nav-left>a.active,.nav-right>a.active{color:var(--c-primary);font-weight:600}
.nav-left>a.active::after,.nav-right>a.active::after{width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  background:var(--c-primary);color:#fff;
  display:grid;place-items:center;
  font-family:var(--font-serif);font-weight:700;font-size:17px;
  box-shadow:0 6px 14px -8px rgba(44,95,124,.9);
}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav-mobile{display:none}
.menu-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);display:grid;place-content:center;gap:5px;padding:0;
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px;transition:.22s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{
  position:fixed;left:0;right:0;top:0;z-index:80;
  background:var(--c-primary-dark);color:#F7F5F0;
  transform:translateY(-102%);transition:transform .3s ease;
  padding:18px 0 26px;box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:6px 0 12px;border-bottom:1px solid rgba(247,245,240,.18)}
.drawer-title{font-family:var(--font-serif);font-size:17px;font-weight:700}
.drawer-close{width:40px;height:40px;border-radius:10px;background:rgba(247,245,240,.12);color:#F7F5F0;font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;padding-top:8px}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;font-size:16px;
  color:rgba(247,245,240,.86);border-bottom:1px solid rgba(247,245,240,.14);
}
.drawer-nav a:last-child{border-bottom:0}
.drawer-nav a.active{color:#fff;font-weight:600}
.drawer-mask{position:fixed;inset:0;background:rgba(20,35,44,.42);z-index:70}
.drawer-mask[hidden]{display:none}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;padding:78px 0 72px;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(228,223,214,.55) 1px,transparent 1px),linear-gradient(90deg,rgba(228,223,214,.55) 1px,transparent 1px);
  background-size:48px 48px;opacity:.35;pointer-events:none;
}
.cat-hero .grid-x{position:relative}
.hero-copy h1{margin:18px 0 18px}
.hero-copy .lead{font-size:17px;color:var(--c-ink-2);max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-anchors{display:flex;gap:10px;flex-wrap:wrap}
.hero-anchors a{
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-surface);border:1px solid var(--c-line);
  padding:8px 16px;border-radius:999px;transition:.24s ease;
}
.hero-anchors a:hover{background:var(--c-primary-soft);border-color:var(--c-primary);transform:translateY(-2px)}
.hero-figure{
  border-radius:var(--r-l);overflow:hidden;background:var(--c-primary-soft);
  box-shadow:var(--sh-1);position:relative;
}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:13px;color:#F7F5F0;
  background:linear-gradient(transparent,rgba(30,71,95,.82));
}

/* ============ 两栏主体 ============ */
.anchor-nav{
  position:sticky;top:100px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);padding:22px;box-shadow:var(--sh-1);
}
.anchor-title{
  font-size:12px;letter-spacing:.18em;color:var(--c-ink-3);
  font-weight:700;margin-bottom:14px;
}
.anchor-nav nav{display:flex;flex-direction:column;gap:2px}
.anchor-nav nav a{
  display:block;padding:10px 12px;border-radius:var(--r-s);
  font-size:14px;color:var(--c-ink-2);border-left:2px solid transparent;
}
.anchor-nav nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);border-left-color:var(--c-primary)}
.anchor-nav .anchor-cta{margin-top:16px;width:100%}

.sub-block{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--c-line)}
.sub-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.sub-block h2{margin-bottom:14px}
.sub-block h3{margin:26px 0 10px;color:var(--c-primary-dark)}
.lede{color:var(--c-ink-2);margin-bottom:22px}
.block-figure{border-radius:var(--r-m);overflow:hidden;background:var(--c-primary-soft);box-shadow:var(--sh-1);margin:26px 0 0}
.block-figure img{width:100%;aspect-ratio:3/2;object-fit:cover}
.block-figure figcaption{font-size:13px;color:var(--c-ink-3);padding:12px 4px 0}
.plain-figure figcaption{text-align:center}

/* 定义列表 */
.def-list{display:grid;gap:0;border-top:1px solid var(--c-line);margin:0}
.def-list .def-row{
  display:grid;grid-template-columns:200px 1fr;gap:24px;
  padding:20px 0;border-bottom:1px solid var(--c-line);
}
.def-list dt{font-family:var(--font-serif);font-size:16px;font-weight:700;color:var(--c-primary-dark)}
.def-list dd{margin:0;color:var(--c-ink-2)}
.def-list dd strong{color:var(--c-ink);font-weight:600}

/* 步骤 */
.steps{counter-reset:step;list-style:none;padding:0;margin:0;display:grid;gap:16px}
.steps li{
  counter-increment:step;position:relative;
  padding:22px 24px 22px 76px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-m);box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease;
}
.steps li:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:24px;top:22px;
  font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--c-accent);
}
.steps li h3{margin:0 0 6px;font-size:17px}
.steps li p{margin:0;color:var(--c-ink-2);font-size:15px}

/* 表格 */
.table-scroll{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-m);background:var(--c-surface);box-shadow:var(--sh-1)}
table.rule-table{width:100%;border-collapse:collapse;min-width:640px}
table.rule-table caption{text-align:left;padding:18px 22px 0;font-size:13px;color:var(--c-ink-3)}
table.rule-table th,table.rule-table td{padding:16px 22px;text-align:left;font-size:15px;border-bottom:1px solid var(--c-line);vertical-align:top}
table.rule-table thead th{
  background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-family:var(--font-serif);font-size:15px;font-weight:700;white-space:nowrap;
}
table.rule-table tbody tr:last-child td{border-bottom:0}
table.rule-table tbody tr:hover{background:#FBF9F5}

/* 时间线 */
.timeline{list-style:none;margin:0;padding:0 0 0 26px;border-left:2px solid var(--c-line)}
.timeline li{position:relative;padding-bottom:30px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-35px;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--c-accent);border:3px solid var(--c-bg);
}
.timeline h3{margin:0 0 6px;font-size:17px}
.timeline p{margin:0;color:var(--c-ink-2);font-size:15px}

/* FAQ */
.faq-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-m);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);
  font-family:var(--font-sans);transition:background-color .22s ease,color .22s ease;
}
.faq-q:hover{background:var(--c-primary-soft)}
.faq-item.is-open .faq-q{background:var(--c-primary-soft);color:var(--c-primary-dark)}
.faq-icon{position:relative;width:28px;height:28px;border-radius:50%;flex:none;background:var(--c-surface);border:1px solid var(--c-line);transition:.24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:.24s ease}
.faq-icon::before{left:8px;right:8px;top:13px;height:2px}
.faq-icon::after{top:8px;bottom:8px;left:13px;width:2px}
.faq-item.is-open .faq-icon{background:var(--c-primary);border-color:var(--c-primary)}
.faq-item.is-open .faq-icon::before{background:#fff}
.faq-item.is-open .faq-icon::after{background:#fff;opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 24px 22px;color:var(--c-ink-2);font-size:15px}

/* 交叉链接 */
.cross-list{display:grid;gap:16px}
.cross-item{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 26px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-m);box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.cross-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:transparent}
.cross-item h3{margin:0 0 6px;font-size:18px;color:var(--c-ink)}
.cross-item p{margin:0;font-size:14px;color:var(--c-ink-2)}
.cross-arrow{font-family:var(--font-serif);color:var(--c-accent);font-size:20px;flex:none}

/* CTA */
.cta-band{background:var(--c-primary-dark);color:#F7F5F0;padding:72px 0}
.cta-band h2{color:#fff}
.cta-band .lead{color:rgba(247,245,240,.78);margin-top:12px;max-width:520px}
.cta-points{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;color:rgba(247,245,240,.85);font-size:15px}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);margin-top:10px;flex:none}
.cta-card{background:var(--c-surface);border-radius:var(--r-l);padding:30px;color:var(--c-ink);box-shadow:var(--sh-2)}
.cta-card h3{margin-bottom:8px;font-size:20px}
.cta-card p{font-size:14px;color:var(--c-ink-2);margin-bottom:20px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink-2);margin-bottom:6px}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:10px;
  border:1px solid var(--c-line);background:#FBFAF7;color:var(--c-ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(44,95,124,.10)}
.form-note{font-size:12px;color:var(--c-ink-3);margin:12px 0 0}
.form-tip{font-size:13px;font-weight:600;color:var(--c-accent);margin:10px 0 0;min-height:18px}
.cta-card .btn{width:100%}

/* 页脚 */
.site-footer{background:var(--c-primary-dark);color:rgba(247,245,240,.82);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:#F7F5F0;color:var(--c-primary-dark);box-shadow:none}
.footer-brand .brand-text{color:#fff}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(247,245,240,.72);margin:0}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-col a{color:rgba(247,245,240,.76);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(247,245,240,.16);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(247,245,240,.6)}
.to-top{
  height:38px;padding:0 18px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(247,245,240,.12);color:#F7F5F0;
  transition:background-color .22s ease,transform .22s ease;
}
.to-top:hover{background:rgba(247,245,240,.24);transform:translateY(-1px)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .wrap{padding:0 24px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .nav-desktop{display:none}
  .nav-mobile{display:flex;align-items:center;justify-content:space-between;min-height:64px}
  .cat-hero{padding:56px 0 52px}
  .anchor-nav{
    position:static;display:flex;align-items:center;gap:14px;
    overflow-x:auto;padding:14px 16px;border-radius:var(--r-m);margin-bottom:36px;
    -webkit-overflow-scrolling:touch;
  }
  .anchor-nav .anchor-title{display:none}
  .anchor-nav nav{flex-direction:row;gap:8px;white-space:nowrap}
  .anchor-nav nav a{border-left:0;background:var(--c-bg);border-radius:999px;padding:8px 14px;font-size:13px}
  .anchor-nav .anchor-cta{display:none}
  .sub-block{padding-bottom:44px;margin-bottom:44px}
  .cta-band{padding:56px 0}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .def-list .def-row{grid-template-columns:1fr;gap:6px}
  .steps li{padding:20px 20px 20px 64px}
  .steps li::before{left:20px;top:20px}
  .faq-q{padding:18px;font-size:16px}
  .faq-a-inner{padding:0 18px 18px}
  .cross-item{padding:20px}
  .cta-card{padding:24px}
  .hero-actions .btn{width:100%}
}
@media (max-width:519px){
  .wrap{padding:0 18px}
  .brand-text{font-size:17px}
  h1{font-size:28px}
  h2{font-size:23px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#2C5F7C;
  --c-primary-dark:#1E475F;
  --c-primary-soft:#E7EFF4;
  --c-accent:#C0763A;
  --c-accent-soft:#FBF1E6;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD6;
  --c-ink:#14232C;
  --c-ink-2:#4A5F6B;
  --c-ink-3:#8797A0;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --sh-1:0 1px 2px rgba(20,35,44,.05), 0 8px 20px -12px rgba(20,35,44,.14);
  --sh-2:0 2px 4px rgba(20,35,44,.06), 0 18px 34px -16px rgba(20,35,44,.22);
  --wrap:1200px;
  --sp:96px;
  --gutter:14px;
  --font-serif:"Noto Serif SC","Source Han Serif SC",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-serif);
  color:var(--c-ink);
  letter-spacing:.01em;
}
h1{font-size:clamp(30px,3.6vw,46px);font-weight:700;line-height:1.25;}
h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:600;line-height:1.4;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .22s ease, border-color .22s ease;}
a:hover{color:var(--c-accent);}
img{max-width:100%;display:block;height:auto;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
dl,dd,dt{margin:0;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* Foundation 覆盖 */
.grid-container{
  max-width:var(--wrap);
  margin:0 auto;
  padding-left:28px;
  padding-right:28px;
}
.grid-x{margin-left:calc(-1 * var(--gutter));margin-right:calc(-1 * var(--gutter));}
.grid-x > .cell{padding-left:var(--gutter);padding-right:var(--gutter);}
.grid-x.row-gap{row-gap:28px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--c-line);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 6px 18px -14px rgba(20,35,44,.4);
}
.site-header .wrap{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 28px;
}
.nav-desktop{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:84px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-desktop{height:64px;}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px;font-size:15px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-left a,.nav-right a:not(.btn){
  position:relative;
  color:var(--c-ink-2);
  padding:6px 0;
  font-weight:500;
}
.nav-left a::after,.nav-right a:not(.btn)::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--c-primary);
  transition:width .24s ease;
}
.nav-left a:hover,.nav-right a:not(.btn):hover{color:var(--c-primary);}
.nav-left a:hover::after,.nav-right a:not(.btn):hover::after{width:100%;}
.nav-left a.active,.nav-right a:not(.btn).active{color:var(--c-primary);font-weight:600;}
.nav-left a.active::after,.nav-right a:not(.btn).active::after{width:100%;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  color:var(--c-ink);
  font-family:var(--font-serif);
  font-weight:700;
  font-size:20px;
  letter-spacing:.02em;
}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:700;
  letter-spacing:0;
}
.nav-mobile{display:none;}

/* 抽屉菜单 */
.drawer-overlay{
  position:fixed;
  inset:0;
  background:rgba(20,35,44,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease, visibility .25s ease;
  z-index:80;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;left:0;right:0;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  transform:translateY(-102%);
  transition:transform .28s ease;
  z-index:90;
  padding:18px 0 24px;
  max-height:88vh;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 20px 14px;
  border-bottom:1px solid var(--c-line);
}
.drawer-close{
  width:38px;height:38px;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink-2);
  font-size:16px;
  line-height:1;
}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer-nav{padding:8px 20px 0;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  border-bottom:1px solid var(--c-line);
  color:var(--c-ink-2);
  font-size:15px;
}
.drawer-nav a.active{color:var(--c-primary);font-weight:600;}
.drawer-nav a i{font-size:12px;color:var(--c-ink-3);}
.drawer-cta{padding:18px 20px 0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 26px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  transition:background .22s ease, color .22s ease, border-color .22s ease, transform .22s ease, box-shadow .22s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:9px;}

/* ============ Hero ============ */
.hero-cat{
  position:relative;
  padding:78px 0 84px;
  background:var(--c-bg);
  overflow:hidden;
}
.hero-cat::before{
  content:"";
  position:absolute;
  top:-160px;right:-140px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(44,95,124,.09), rgba(44,95,124,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:1;}
.eyebrow{
  display:inline-block;
  padding:5px 12px;
  border-radius:999px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  margin-bottom:20px;
}
.hero-copy h1{margin-bottom:20px;}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:610px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-anchors{display:flex;flex-wrap:wrap;gap:10px;}
.hero-anchors a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink-2);
  font-size:13px;
  transition:border-color .22s ease, color .22s ease, background .22s ease;
}
.hero-anchors a::before{content:"\f0da";font-family:"Font Awesome 6 Free";font-weight:900;font-size:10px;color:var(--c-accent);}
.hero-anchors a:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft);}
.hero-media{
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  background:var(--c-primary-soft);
  aspect-ratio:16/9;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp) 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{margin-bottom:48px;max-width:760px;}
.section-head .kicker{
  display:block;
  color:var(--c-accent);
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  margin-bottom:12px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--c-ink-2);font-size:16px;margin:0;}
.section-head.split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}
.text-link{
  color:var(--c-primary);
  border-bottom:1px solid var(--c-line);
  padding-bottom:2px;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
}
.text-link:hover{border-bottom-color:var(--c-accent);color:var(--c-accent);}

/* 统计条 */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  margin-bottom:40px;
}
.stat-strip .stat{
  padding:26px 24px;
  border-right:1px solid var(--c-line);
}
.stat-strip .stat:last-child{border-right:none;}
.stat-num{
  font-family:var(--font-serif);
  font-size:34px;
  font-weight:700;
  color:var(--c-primary);
  line-height:1.1;
  margin-bottom:6px;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--c-ink-2);margin-left:4px;font-family:var(--font-sans);}
.stat-label{font-size:14px;color:var(--c-ink-2);line-height:1.7;}

/* 图文块 */
.figure-block{
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  background:var(--c-primary-soft);
}
.figure-block img{width:100%;height:100%;object-fit:cover;}
.figure-caption{
  font-size:13px;
  color:var(--c-ink-3);
  text-align:center;
  margin-top:10px;
}
.prose p{color:var(--c-ink-2);}
.prose h3{margin:26px 0 12px;color:var(--c-ink);}
.prose h3:first-child{margin-top:0;}

/* 列表条目 */
.point-list{border-top:1px solid var(--c-line);}
.point-item{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--c-line);
}
.point-item .idx{
  width:34px;height:34px;
  border-radius:50%;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-serif);
  font-size:15px;
  font-weight:700;
  margin-top:3px;
}
.point-item h3{font-size:18px;margin-bottom:6px;}
.point-item p{color:var(--c-ink-2);font-size:15px;margin:0;}

/* 定义列表 */
.def-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  overflow:hidden;
}
.def-row{
  display:grid;
  grid-template-columns:230px 1fr;
  gap:24px;
  padding:22px 26px;
  border-bottom:1px solid var(--c-line);
  transition:background .22s ease;
}
.def-row:last-child{border-bottom:none;}
.def-row:hover{background:var(--c-primary-soft);}
.def-row dt{
  font-family:var(--font-serif);
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  display:flex;
  align-items:baseline;
  gap:8px;
}
.def-row dt .tag{
  font-family:var(--font-sans);
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
  padding:3px 9px;
  border-radius:999px;
  background:var(--c-accent-soft);
  color:var(--c-accent);
  white-space:nowrap;
}
.def-row dd{font-size:15px;color:var(--c-ink-2);line-height:1.85;}

/* 步骤流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.step-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease, box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.step-card .step-no{
  font-family:var(--font-serif);
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--c-accent);
  display:block;
  margin-bottom:14px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--c-ink-2);margin:0;line-height:1.8;}

/* 更新说明卡 */
.update-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  border:1px solid var(--c-line);
  border-radius:var(--r-l);
  overflow:hidden;
  background:var(--c-surface);
  box-shadow:var(--sh-1);
}
.update-media{height:100%;min-height:320px;background:var(--c-primary-soft);}
.update-media img{width:100%;height:100%;object-fit:cover;}
.update-body{padding:44px 40px;}
.update-body h3{margin-bottom:14px;}
.update-body > p{color:var(--c-ink-2);font-size:15px;}
.mini-list{margin-top:24px;border-top:1px solid var(--c-line);}
.mini-list li{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:13px 0;
  border-bottom:1px solid var(--c-line);
  font-size:14px;
  color:var(--c-ink-2);
}
.mini-list li span:last-child{color:var(--c-primary);font-weight:600;white-space:nowrap;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-intro h2{margin-bottom:14px;}
.faq-intro p{color:var(--c-ink-2);font-size:15px;}
.faq-list{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-m);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:transparent;
  border:none;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  transition:background .25s ease, color .25s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--c-line);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--c-primary);
  font-size:13px;
  transition:background .25s ease, transform .25s ease, color .25s ease;
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--c-ink-2);
  margin:0;
}
.faq-item.is-open .faq-q{background:var(--c-primary-soft);color:var(--c-primary);}
.faq-item.is-open .faq-icon{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* 交叉链接 */
.cross-list{border-top:1px solid var(--c-line);}
.cross-item{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:22px;
  padding:24px 8px;
  border-bottom:1px solid var(--c-line);
  transition:background .22s ease, padding .22s ease;
}
.cross-item:hover{background:var(--c-surface);padding-left:18px;padding-right:18px;}
.cross-mark{
  width:46px;height:46px;
  border-radius:12px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
}
.cross-item h3{font-size:17px;margin-bottom:4px;}
.cross-item p{font-size:14px;color:var(--c-ink-2);margin:0;}
.cross-item .arrow{color:var(--c-primary);font-size:15px;}

/* CTA */
.cta-band{
  background:var(--c-primary-dark);
  color:#F7F5F0;
  border-radius:var(--r-l);
  padding:52px 48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(247,245,240,.82);font-size:15px;margin:0;}
.cta-form{
  background:var(--c-surface);
  border-radius:var(--r-m);
  padding:24px;
  box-shadow:var(--sh-2);
}
.cta-form label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--c-ink-2);
  margin-bottom:8px;
}
.cta-form .field-row{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input[type="email"]{
  flex:1 1 200px;
  height:48px;
  padding:0 16px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-ink);
  transition:border-color .22s ease, box-shadow .22s ease;
}
.cta-form input[type="email"]::placeholder{color:var(--c-ink-3);}
.cta-form input[type="email"]:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(44,95,124,.16);
}
.form-hint{font-size:13px;color:var(--c-ink-3);margin:12px 0 0;}
.form-msg{font-size:13px;color:var(--c-accent);margin:10px 0 0;display:none;}
.form-msg.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-dark);
  color:rgba(247,245,240,.78);
  padding:72px 0 0;
  margin-top:var(--sp);
}
.site-footer .wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px;}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:#fff;color:var(--c-primary-dark);}
.footer-brand:hover{color:#fff;}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(247,245,240,.72);margin:0;}
.footer-col h4{
  color:#fff;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  margin-bottom:16px;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(247,245,240,.75);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(247,245,240,.16);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:rgba(247,245,240,.62);}
.to-top{
  background:transparent;
  border:1px solid rgba(247,245,240,.35);
  color:rgba(247,245,240,.85);
  border-radius:9px;
  padding:8px 16px;
  font-size:13px;
  transition:background .22s ease, color .22s ease, border-color .22s ease;
}
.to-top:hover{background:rgba(247,245,240,.12);color:#fff;border-color:rgba(247,245,240,.7);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sp:72px;}
  .nav-desktop{display:none;}
  .nav-mobile{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:68px;
  }
  .site-header.is-scrolled .nav-mobile{height:62px;}
  .menu-toggle{
    width:44px;height:40px;
    border:1px solid var(--c-line);
    border-radius:10px;
    background:var(--c-surface);
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:4px;
  }
  .menu-toggle span{
    display:block;
    width:18px;height:2px;
    background:var(--c-ink);
    border-radius:2px;
    transition:transform .25s ease, opacity .25s ease;
  }
  .menu-toggle:hover{border-color:var(--c-primary);}
  .menu-toggle:hover span{background:var(--c-primary);}
  .grid-container, .site-header .wrap, .site-footer .wrap{padding-left:24px;padding-right:24px;}
  .hero-cat{padding:56px 0 64px;}
  .hero-media{margin-top:34px;aspect-ratio:3/2;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:40px 32px;gap:28px;}
  .update-panel{grid-template-columns:1fr;}
  .update-media{min-height:220px;}
  .update-body{padding:32px 26px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  :root{--sp:56px;--gutter:10px;}
  .grid-container, .site-header .wrap, .site-footer .wrap{padding-left:18px;padding-right:18px;}
  h1{font-size:29px;}
  h2{font-size:23px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:10px;}
  .btn{width:100%;padding:0 20px;}
  .hero-actions .btn{width:auto;flex:1 1 auto;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-strip .stat{border-right:none;border-bottom:1px solid var(--c-line);padding:20px 0;}
  .stat-strip .stat:last-child{border-bottom:none;}
  .def-row{grid-template-columns:1fr;gap:8px;padding:18px 20px;}
  .steps{grid-template-columns:1fr;}
  .section-head.split{flex-direction:column;align-items:flex-start;}
  .cross-item{grid-template-columns:auto 1fr;gap:14px;padding:20px 0;}
  .cross-item .arrow{display:none;}
  .cta-band{padding:32px 20px;border-radius:var(--r-m);}
  .cta-form{padding:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (min-width:1440px){
  .grid-container{max-width:var(--wrap);}
}