/* roulang page: index */
:root{
  --brand:#1B5A4F;
  --brand-dark:#14463D;
  --brand-soft:#E7EFEC;
  --accent:#C2703A;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --sand:#EDE7DC;
  --ink:#14181B;
  --muted:#6B7280;
  --line:rgba(20,24,27,.09);
  --danger:#A33B2A;
  --r-xs:6px;
  --r-sm:8px;
  --r:10px;
  --r-card:14px;
  --r-lg:18px;
  --sh-1:0 1px 2px rgba(20,24,27,.04);
  --sh-2:0 10px 26px rgba(20,24,27,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:88px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --bs-primary:#1B5A4F;
  --bs-primary-rgb:27,90,79;
  --bs-body-bg:#F7F4EE;
  --bs-body-color:#14181B;
  --bs-body-font-family:var(--sans);
  --bs-border-radius:10px;
  --bs-border-radius-lg:18px;
  --bs-border-color:rgba(20,24,27,.09);
  --bs-link-color:#1B5A4F;
  --bs-link-hover-color:#14463D;
  --bs-link-decoration:none;
}
*,*::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:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
:focus-visible{outline:3px solid rgba(27,90,79,.25);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px;}
.container-wide{max-width:1280px;}

/* ===== 顶部信息条 ===== */
.topbar{
  background:var(--ink);
  color:#F2EFE9;
  font-size:12.5px;
  letter-spacing:.02em;
  min-height:36px;
  display:flex;
  align-items:center;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:8px;opacity:.86;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:#7FBFAC;flex:0 0 auto;}
.topbar-right{display:flex;align-items:center;gap:12px;}
.topbar-right a{color:#F2EFE9;border-bottom:1px solid rgba(242,239,233,.45);padding-bottom:1px;}
.topbar-right a:hover{color:#E8C9AE;border-color:#E8C9AE;}
.topbar-sep{width:1px;height:12px;background:rgba(242,239,233,.28);}
.topbar-domain{opacity:.72;font-variant-numeric:tabular-nums;}

/* ===== 主导航 ===== */
.site-nav{
  position:sticky;
  top:0;
  z-index:1035;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(20,24,27,.06);}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--brand-dark),var(--brand) 68%);
  display:grid;place-items:center;color:#fff;
  font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-cn{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.12em;}
.nav-links{display:flex;align-items:center;gap:28px;margin-inline:auto;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:#2B3136;
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink);background:var(--surface);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(27,90,79,.4);color:var(--brand);background:var(--brand-soft);}
.nav-toggle{display:none;}

/* 按钮 */
.btn{border-radius:var(--r);font-weight:600;transition:all .22s var(--ease);border:1.5px solid transparent;}
.btn-brand{
  background:var(--brand);color:#fff;padding:13px 26px;font-size:15px;
  box-shadow:0 1px 2px rgba(20,24,27,.05);
}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(27,90,79,.22);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-outline-brand{
  background:transparent;color:var(--brand);border-color:var(--brand);padding:12px 25px;font-size:15px;
}
.btn-outline-brand:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-light-inverse{
  background:#F7F4EE;color:var(--brand-dark);padding:13px 28px;font-size:15px;
}
.btn-light-inverse:hover{background:#fff;color:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.18);}
.btn-sm-nav{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;display:block;text-align:center;}
.btn-ghost-line{
  background:transparent;color:#F2EFE9;border-color:rgba(242,239,233,.5);padding:12px 22px;font-size:14px;
}
.btn-ghost-line:hover{background:rgba(242,239,233,.12);color:#fff;border-color:#F2EFE9;}

/* 搜索条 */
.nav-search{border-top:1px solid var(--line);background:var(--surface);}
.nav-search .container{padding-block:16px;}
.search-form{display:flex;gap:12px;max-width:640px;}
.form-control{
  border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;font-size:15px;background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-control:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,90,79,.12);outline:none;
}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px;}

/* 移动端抽屉 */
.offcanvas{border-left:1px solid var(--line);}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-body{padding:0;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink);line-height:1.4;
}
.drawer-link.active{color:var(--brand);font-weight:600;background:var(--brand-soft);}
.drawer-link svg{opacity:.4;}
.drawer-foot{padding:20px;}

/* ===== 通用区块 ===== */
.section{padding-block:var(--sec);}
.sec-sand{background:var(--sand);}
.sec-soft{background:var(--brand-soft);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow-mark{width:9px;height:9px;background:var(--accent);border-radius:2px;display:inline-block;}
h2.sec-title{font-family:var(--serif);font-size:clamp(22px,2.6vw,34px);line-height:1.3;color:var(--ink);}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;
}
.sec-lead{margin-top:14px;font-size:16px;color:var(--muted);max-width:640px;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand);position:relative;padding-bottom:3px;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:60%;background:rgba(27,90,79,.45);
  transition:width .24s var(--ease);
}
.link-more:hover::after{width:100%;background:var(--brand);}
.link-more svg{transition:transform .24s var(--ease);}
.link-more:hover svg{transform:translateX(3px);}
.badge-soft{
  display:inline-block;background:var(--brand-soft);color:var(--brand);
  border-radius:var(--r-xs);font-size:12px;font-weight:500;padding:3px 10px;line-height:1.6;
}
.badge-accent{background:rgba(194,112,58,.12);color:var(--accent);}

/* ===== Hero ===== */
.hero-conv{
  position:relative;
  padding-block:84px 76px;
  background:
    radial-gradient(900px 420px at 88% 8%,rgba(27,90,79,.10),transparent 62%),
    linear-gradient(180deg,#FBF9F5 0%,var(--bg) 100%);
  overflow:hidden;
}
.hero-conv::before{
  content:"";position:absolute;left:-60px;top:40px;width:220px;height:220px;
  border:1px solid rgba(27,90,79,.14);border-radius:50%;pointer-events:none;
}
.hero-copy h1{
  font-family:var(--serif);
  font-size:clamp(28px,4.4vw,52px);
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-bottom:20px;
}
.hero-sub{
  font-size:17px;line-height:1.8;color:#3C4449;max-width:560px;margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:26px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#444C52;}
.trust-item svg{color:var(--brand);flex:0 0 auto;}
.hero-media{position:relative;}
.hero-media .media-frame{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--sand);
  overflow:hidden;
  aspect-ratio:5/4;
  box-shadow:var(--sh-2);
}
.hero-media .media-frame img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;right:-14px;bottom:-22px;width:186px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);overflow:hidden;
}
.hero-float .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--sand);}
.hero-float .thumb img{width:100%;height:100%;object-fit:cover;}
.hero-float .cap{padding:11px 13px;}
.hero-float .cap strong{display:block;font-size:13px;color:var(--ink);line-height:1.5;}
.hero-float .cap span{font-size:11.5px;color:var(--muted);}

/* ===== 卖点三连 ===== */
.point-row{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);}
.point-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.point-item{padding:44px 38px;border-left:1px solid var(--line);}
.point-item:first-child{border-left:0;padding-left:0;}
.point-item:last-child{padding-right:0;}
.point-num{
  font-family:var(--serif);font-size:clamp(48px,4.6vw,64px);line-height:1;
  letter-spacing:-.02em;color:var(--accent);display:block;margin-bottom:16px;
}
.point-item h3{font-size:17px;font-weight:600;margin-bottom:10px;color:var(--ink);}
.point-item p{font-size:14.5px;color:var(--muted);line-height:1.85;}

/* ===== 场景演示 ===== */
.flow-layout{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.flow-step{
  position:relative;padding:18px 0 18px 62px;border-bottom:1px solid var(--line);
  transition:opacity .3s var(--ease);
}
.flow-step:last-child{border-bottom:0;}
.flow-step .idx{
  position:absolute;left:0;top:16px;width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;font-family:var(--serif);font-size:16px;
  background:var(--sand);color:#5C5A55;border:1px solid var(--line);
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--ink);}
.flow-step p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.flow-step.is-active .idx{background:var(--brand);color:#fff;border-color:var(--brand);}
.flow-step.is-active h3{color:var(--brand-dark);}
.flow-step:not(.is-active){opacity:.62;}
.flow-step:not(.is-active):hover{opacity:.88;}
.device-frame{
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:14px;
}
.device-inner{
  border:1px solid rgba(20,24,27,.12);border-radius:12px;overflow:hidden;background:#fff;
  aspect-ratio:4/3;
}
.device-inner img{width:100%;height:100%;object-fit:cover;}
.device-bar{display:flex;gap:6px;padding:0 4px 12px;}
.device-bar i{width:9px;height:9px;border-radius:50%;background:rgba(20,24,27,.16);display:block;}

/* ===== 内容列表 ===== */
.news-feature{
  display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:34px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);transition:all .22s var(--ease);
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(27,90,79,.22);}
.nf-media{
  border-radius:var(--r-card);overflow:hidden;background:var(--sand);
  aspect-ratio:16/10;border:1px solid var(--line);
}
.nf-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.news-feature:hover .nf-media img{transform:scale(1.03);}
.nf-body{display:flex;flex-direction:column;justify-content:center;gap:12px;min-width:0;}
.nf-body h3{font-family:var(--serif);font-size:23px;line-height:1.4;}
.nf-body h3 a{color:var(--ink);}
.nf-body h3 a:hover{color:var(--brand);}
.nf-body p{font-size:15px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.nf-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--muted);}
.news-list{margin-top:26px;border-top:1px solid var(--line);}
.news-item{
  display:grid;grid-template-columns:104px minmax(0,1fr) auto;gap:20px;align-items:center;
  padding:20px 8px;border-bottom:1px solid var(--line);transition:background .2s var(--ease);
}
.news-item:hover{background:rgba(27,90,79,.04);}
.news-item .ni-cat{font-size:12px;}
.news-item h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.news-item h3 a{color:var(--ink);}
.news-item h3 a:hover{color:var(--brand);}
.news-item .ni-sum{
  font-size:14px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item .ni-time{font-size:13px;color:var(--muted);white-space:nowrap;}
.empty-state{
  background:var(--surface);border:1px dashed rgba(27,90,79,.3);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;
}
.empty-state svg{color:rgba(27,90,79,.4);margin-bottom:16px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px;}

/* ===== 社会认同 ===== */
.proof-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;
}
.proof-cell{padding:34px 28px;border-left:1px solid var(--line);}
.proof-cell:first-child{border-left:0;}
.proof-num{font-family:var(--serif);font-size:clamp(30px,3.2vw,42px);line-height:1.1;color:var(--brand);letter-spacing:-.02em;}
.proof-num span{font-size:16px;margin-left:2px;color:var(--muted);font-family:var(--sans);}
.proof-cell p{margin-top:8px;font-size:13.5px;color:var(--muted);}
.quote-list{margin-top:34px;display:grid;gap:22px;}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--r-card);padding:26px 30px;box-shadow:var(--sh-1);
}
.quote-card .qm{font-family:var(--serif);font-size:34px;line-height:1;color:var(--accent);display:block;margin-bottom:8px;}
.quote-card blockquote{margin:0;font-size:16px;line-height:1.9;color:#333A3F;}
.quote-card footer{margin-top:14px;font-size:13.5px;color:var(--muted);}
.quote-card footer strong{color:var(--ink);font-weight:600;}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:56px;}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;border-radius:0;}
.accordion-button{
  background:transparent;border:0;box-shadow:none;
  font-size:16px;font-weight:600;color:var(--ink);
  padding:22px 40px 22px 0;line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border:0;}
.accordion-button::after{
  width:16px;height:16px;background-size:16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  transition:transform .22s var(--ease);
}
.accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231B5A4F' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
}
.accordion-body{padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-aside{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1);}
.faq-aside h3{font-family:var(--serif);font-size:20px;margin-bottom:12px;}
.faq-aside p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-bottom:20px;}
.faq-aside ul{margin-bottom:22px;display:grid;gap:10px;}
.faq-aside li{display:flex;gap:10px;font-size:14px;color:#3C4449;align-items:flex-start;}
.faq-aside li svg{color:var(--brand);margin-top:4px;flex:0 0 auto;}

/* ===== 底部 CTA ===== */
.cta-band{padding-block:0 72px;}
.cta-inner{
  background:linear-gradient(140deg,var(--ink),#1E2A2C 58%,var(--brand-dark));
  border-radius:var(--r-lg);
  padding:64px 40px;
  text-align:center;
  color:#F2EFE9;
  position:relative;
  overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border:1px solid rgba(242,239,233,.14);border-radius:50%;
}
.cta-inner h2{font-family:var(--serif);font-size:clamp(24px,3vw,36px);color:#fff;margin-bottom:16px;}
.cta-inner p{font-size:16px;color:rgba(242,239,233,.78);max-width:560px;margin:0 auto 30px;line-height:1.85;}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;position:relative;z-index:1;}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:rgba(242,239,233,.72);padding-top:72px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand-mark{background:#F2EFE9;color:var(--brand-dark);}
.footer-brand .brand-cn{color:#F2EFE9;}
.footer-brand .brand-sub{color:rgba(242,239,233,.5);}
.footer-desc{margin-top:18px;line-height:1.9;max-width:320px;font-size:13.5px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid rgba(242,239,233,.2);
  display:grid;place-items:center;color:rgba(242,239,233,.72);
  transition:all .2s var(--ease);
}
.footer-social a:hover{border-color:var(--accent);color:var(--accent);background:rgba(194,112,58,.1);}
.footer-col h4{font-size:14px;color:#F2EFE9;margin-bottom:18px;font-weight:600;letter-spacing:.04em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{color:rgba(242,239,233,.72);font-size:13.5px;}
.footer-col a:hover{color:var(--accent);}
.footer-contact li{font-size:13.5px;line-height:1.8;color:rgba(242,239,233,.72);}
.footer-bottom{
  border-top:1px solid rgba(242,239,233,.14);
  padding-block:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(242,239,233,.5);
}

/* ===== 底部固定转化条 ===== */
.sticky-cta{
  position:fixed;z-index:1040;opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.sticky-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.sticky-cta .sc-close{
  width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
  color:var(--muted);background:var(--surface);border:1px solid var(--line);font-size:16px;line-height:1;
}
.sticky-cta .sc-close:hover{color:var(--danger);border-color:rgba(163,59,42,.4);}
.sticky-cta .sc-sub{display:none;}

/* ===== 动效 ===== */
.js .reveal{opacity:0;transform:translateY(12px);}
.js .reveal.in{opacity:1;transform:none;transition:opacity .42s var(--ease),transform .42s var(--ease);}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .hero-float{right:0;bottom:-18px;width:168px;}
  .news-feature{grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:26px;}
}
@media (max-width:991.98px){
  :root{--sec:72px;}
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .nav-actions .btn-brand{display:none;}
  .hero-conv{padding-block:56px 64px;}
  .point-grid{grid-template-columns:1fr;}
  .point-item{padding:30px 0;border-left:0;border-top:1px solid var(--line);}
  .point-item:first-child{border-top:0;padding-top:0;}
  .point-item:last-child{padding-bottom:0;}
  .flow-layout{grid-template-columns:1fr;gap:34px;}
  .flow-media{order:-1;}
  .faq-wrap{grid-template-columns:1fr;gap:34px;}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
  .proof-cell:nth-child(odd){border-left:0;}
  .proof-cell:nth-child(n+3){border-top:1px solid var(--line);}
  .news-feature{grid-template-columns:1fr;padding:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-inner{padding:48px 26px;}
}
@media (max-width:767.98px){
  :root{--sec:52px;}
  body{font-size:16px;padding-bottom:64px;}
  .topbar-left{display:none;}
  .topbar .container{justify-content:flex-end;}
  .nav-inner{min-height:64px;gap:14px;}
  .hero-media .media-frame{aspect-ratio:16/11;}
  .hero-float{display:none;}
  .news-item{grid-template-columns:1fr;gap:8px;padding:18px 4px;}
  .news-item .ni-time{order:3;}
  .proof-grid{grid-template-columns:1fr;}
  .proof-cell{border-left:0;border-top:1px solid var(--line);padding:24px 20px;}
  .proof-cell:first-child{border-top:0;}
  .quote-card{padding:20px 20px;}
  .accordion-button{padding:18px 34px 18px 0;font-size:15.5px;}
  .accordion-body{padding:0 20px 20px 0;}
  .cta-band{padding-bottom:52px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .sticky-cta{
    left:0;right:0;bottom:0;width:auto;
    background:rgba(255,255,255,.97);
    border-top:1px solid var(--line);
    padding:10px 14px;
    display:flex;gap:10px;align-items:center;
    box-shadow:0 -6px 20px rgba(20,24,27,.08);
    backdrop-filter:blur(8px);
  }
  .sticky-cta .sc-main{flex:1;text-align:center;padding:11px 16px;}
  .sticky-cta .sc-sub{display:block;flex:0 0 auto;padding:10px 14px;}
  .sticky-cta .sc-close{display:none;}
}
@media (max-width:575.98px){
  .container{padding-inline:16px;}
  .hero-copy h1{font-size:28px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;text-align:center;}
  .trust-row{gap:14px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .nf-body h3{font-size:19px;}
  .point-num{font-size:44px;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --brand:#1B5A4F;
  --brand-dark:#14463D;
  --brand-soft:#E7EFEC;
  --accent:#C2703A;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --sand:#EDE7DC;
  --ink:#14181B;
  --muted:#6B7280;
  --line:rgba(20,24,27,.09);
  --danger:#A33B2A;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:14px;
  --radius-xl:18px;
  --shadow-1:0 1px 2px rgba(20,24,27,.04);
  --shadow-2:0 10px 26px rgba(20,24,27,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --bs-primary:#1B5A4F;
  --bs-primary-rgb:27,90,79;
  --bs-body-bg:#F7F4EE;
  --bs-body-color:#14181B;
  --bs-border-radius:14px;
  --bs-border-radius-sm:10px;
  --bs-border-radius-lg:18px;
  --bs-link-color:#1B5A4F;
  --bs-link-hover-color:#14463D;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --bs-body-font-family:var(--sans);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
button{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;}
p{margin:0;}
:focus-visible{outline:3px solid rgba(27,90,79,.28);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#14181B;color:#EDE7DC;font-size:13px;line-height:1;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px;}
.topbar-note{color:rgba(237,231,220,.78);letter-spacing:.01em;}
.topbar-right{display:flex;align-items:center;gap:12px;}
.topbar-link{color:#EDE7DC;border-bottom:1px solid rgba(237,231,220,.35);padding-bottom:2px;}
.topbar-link:hover{color:var(--accent);border-color:var(--accent);}
.topbar-sep{width:1px;height:12px;background:rgba(237,231,220,.28);}
.topbar-domain{color:rgba(237,231,220,.6);letter-spacing:.04em;}

/* ---------- 导航 ---------- */
.site-nav{position:sticky;top:0;z-index:1030;background:#FFFDF9;border-bottom:1px solid transparent;transition:box-shadow .25s var(--ease),border-color .25s var(--ease);}
.site-nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 22px rgba(20,24,27,.07);}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{font-family:var(--serif);font-size:26px;font-weight:700;color:var(--brand);letter-spacing:.01em;line-height:1;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-cn{font-size:15px;font-weight:600;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:10px;letter-spacing:.2em;color:var(--muted);}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{position:relative;font-size:15px;color:#2B3135;padding:8px 0;white-space:nowrap;}
.nav-links a::after{content:"";position:absolute;left:0;bottom:2px;width:0;height:2px;background:var(--brand);transition:width .24s var(--ease);}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after,.nav-links a.active::after{width:100%;}
.nav-links a.active{color:var(--brand);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-grid;place-items:center;cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);}
.icon-btn:hover{border-color:rgba(27,90,79,.4);color:var(--brand);background:var(--brand-soft);}
.nav-toggle{display:inline-grid;}
.nav-search{border-top:1px solid var(--line);background:#FFFDF9;}
.search-form{display:flex;gap:10px;padding:14px 0;}
.search-form .form-control{flex:1;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:15px;background:var(--surface);color:var(--ink);}
.search-form .form-control:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,90,79,.12);}

/* ---------- 按钮 ---------- */
.btn{border-radius:10px;border:1.5px solid transparent;font-weight:600;font-size:15px;padding:14px 26px;line-height:1.3;transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(27,90,79,.22);}
.btn-brand:active{transform:none;box-shadow:none;background:var(--brand-dark);color:#fff;}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);}
.btn-ghost:active{background:var(--brand-soft);}
.btn-inverse{background:#F7F4EE;color:var(--brand-dark);border-color:transparent;}
.btn-inverse:hover{background:#fff;color:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.22);}
.btn-sm-nav{padding:9px 18px;font-size:14px;}

/* ---------- 抽屉导航 ---------- */
.drawer{width:min(86vw,340px);background:#FFFDF9;border-left:1px solid var(--line);}
.drawer-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-title{font-size:15px;font-weight:600;letter-spacing:.06em;color:var(--muted);}
.drawer-body{padding:8px 20px 28px;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{display:flex;align-items:center;min-height:52px;font-size:16px;color:#2B3135;border-bottom:1px solid var(--line);}
.drawer-nav a.active{color:var(--brand);font-weight:600;}
.drawer-nav a:hover{color:var(--brand);}
.drawer-cta{margin-top:22px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:26px 0 4px;}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb-sep{color:rgba(20,24,27,.25);}
.crumb-current{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#4A5257;}

/* ---------- 文章头 ---------- */
.article-head{padding:16px 0 34px;}
.article-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);letter-spacing:.04em;margin-bottom:14px;}
.article-eyebrow::before{content:"";width:10px;height:10px;background:var(--accent);border-radius:2px;}
.article-title{font-family:var(--serif);font-size:clamp(26px,3.4vw,40px);line-height:1.25;letter-spacing:-.01em;max-width:18em;}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:18px;font-size:13px;color:var(--muted);}
.badge-soft{display:inline-block;background:var(--brand-soft);color:var(--brand);border-radius:6px;font-size:12px;font-weight:500;padding:3px 10px;}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item svg{opacity:.7;}

/* ---------- 主体布局 ---------- */
.layout{padding-bottom:8px;}
.article-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow-1);padding:36px 40px 42px;color:#252B2F;}
.article-body>*:first-child{margin-top:0;}
.article-body p{font-size:17px;line-height:1.9;margin:0 0 20px;color:#252B2F;}
.article-body h2{font-family:var(--serif);font-size:clamp(20px,2.2vw,24px);line-height:1.4;margin:40px 0 16px;padding-left:14px;position:relative;scroll-margin-top:100px;color:var(--ink);}
.article-body h2::before{content:"";position:absolute;left:0;top:.36em;width:3px;height:18px;background:var(--brand);border-radius:2px;}
.article-body h3{font-size:18px;line-height:1.5;margin:30px 0 12px;color:var(--ink);}
.article-body h4{font-size:16px;margin:22px 0 10px;color:var(--ink);}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 20px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{font-size:16.5px;line-height:1.8;margin:8px 0;}
.article-body blockquote{margin:24px 0;background:var(--sand);border-left:4px solid var(--brand);border-radius:0 12px 12px 0;padding:20px 22px;color:#3B4247;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:22px 0;border:1px solid var(--line);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden;}
.article-body th{background:var(--brand-soft);color:var(--brand-dark);text-align:left;font-weight:600;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:rgba(237,231,220,.45);}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;}
.article-body a:hover{color:var(--brand-dark);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}
.article-body code{background:var(--sand);border-radius:6px;padding:2px 6px;font-size:14px;}

.article-empty{padding:64px 24px;text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);}
.article-empty svg{color:rgba(27,90,79,.4);margin:0 auto 16px;}
.article-empty p{color:var(--muted);margin-bottom:20px;}

/* ---------- 侧栏 ---------- */
.side-sticky{display:grid;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 22px 24px;box-shadow:var(--shadow-1);}
.side-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:14px;padding-left:12px;position:relative;}
.side-title::before{content:"";position:absolute;left:0;top:.42em;width:3px;height:14px;background:var(--accent);border-radius:2px;}
.side-desc{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:16px;}
.toc-list li{margin:0;}
.toc-list a{display:block;font-size:14px;line-height:1.6;color:#4A5257;padding:8px 10px;border-radius:8px;border-left:2px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand-dark);}
.toc-list a.is-current{color:var(--brand);font-weight:600;border-left-color:var(--brand);background:var(--brand-soft);}
.side-empty{font-size:13px;color:var(--muted);}
.mini-list li{padding:11px 0;border-bottom:1px solid var(--line);}
.mini-list li:last-child{border-bottom:0;padding-bottom:0;}
.mini-list a{font-size:14.5px;line-height:1.65;color:#2B3135;display:block;}
.mini-list a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.side-cta{position:relative;overflow:hidden;background:linear-gradient(180deg,rgba(20,24,27,.86),rgba(20,24,27,.92)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;border-color:rgba(255,255,255,.12);}
.side-cta .side-title{color:#F7F4EE;}
.side-cta .side-desc{color:rgba(237,231,220,.82);margin-bottom:18px;}

/* ---------- 文末区块 ---------- */
.article-foot{margin-top:32px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:22px 0 4px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--muted);}
.tag{display:inline-block;background:var(--sand);color:#3B4247;border-radius:6px;font-size:12.5px;padding:5px 12px;transition:background .2s var(--ease),color .2s var(--ease);}
.tag:hover{background:var(--brand-soft);color:var(--brand-dark);}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:44px 0 22px;}
.block-title{font-family:var(--serif);font-size:clamp(20px,2.2vw,26px);line-height:1.35;}
.block-more{font-size:14px;color:var(--brand);border-bottom:1px solid rgba(27,90,79,.35);padding-bottom:2px;}
.block-more:hover{border-color:var(--brand);}
.rel-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);height:100%;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(27,90,79,.22);}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--sand);border-bottom:1px solid var(--line);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:18px 20px 22px;}
.rel-title{font-size:16.5px;line-height:1.5;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card:hover .rel-title{color:var(--brand);}
.rel-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;font-size:13px;color:var(--muted);}
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:34px;}

/* ---------- 底部 CTA ---------- */
.cta-band{margin-top:72px;}
.cta-inner{background:#14181B;border-radius:18px;padding:56px 32px;text-align:center;position:relative;overflow:hidden;}
.cta-inner::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border:1px solid rgba(237,231,220,.14);border-radius:50%;}
.cta-title{font-family:var(--serif);font-size:clamp(22px,2.8vw,32px);color:#F7F4EE;line-height:1.35;}
.cta-desc{color:rgba(237,231,220,.75);font-size:15.5px;margin:14px auto 26px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:#14181B;color:#EDE7DC;margin-top:72px;padding:64px 0 26px;font-size:14.5px;}
.footer-top{row-gap:36px;}
.footer-brand{display:flex;align-items:baseline;gap:9px;margin-bottom:14px;}
.footer-brand .brand-mark{color:#F7F4EE;font-size:24px;}
.footer-brand-cn{font-size:15px;font-weight:600;color:#F7F4EE;}
.footer-desc{color:rgba(237,231,220,.68);line-height:1.85;max-width:34em;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{width:36px;height:36px;border-radius:10px;border:1px solid rgba(237,231,220,.2);display:grid;place-items:center;color:rgba(237,231,220,.8);}
.footer-social a:hover{border-color:var(--accent);color:var(--accent);}
.footer-title{font-size:14px;font-weight:600;color:#F7F4EE;letter-spacing:.06em;margin-bottom:16px;}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(237,231,220,.72);}
.footer-links a:hover{color:var(--accent);}
.footer-info li{color:rgba(237,231,220,.72);margin-bottom:11px;}
.footer-info strong{color:#F7F4EE;font-weight:600;}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:44px;padding-top:20px;border-top:1px solid rgba(237,231,220,.14);font-size:13px;color:rgba(237,231,220,.55);}
.footer-note strong{color:rgba(237,231,220,.85);}
.footer-domain{letter-spacing:.04em;}

/* ---------- 固定转化条 / 返回顶部 ---------- */
.sticky-cta{position:fixed;z-index:1040;opacity:0;visibility:hidden;transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;}
.sticky-cta.is-visible{opacity:1;visibility:visible;}
.sticky-shell{display:flex;gap:10px;align-items:center;}
.back-top{position:fixed;right:24px;bottom:96px;z-index:1035;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--brand);display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;box-shadow:var(--shadow-1);transition:opacity .3s var(--ease),visibility .3s var(--ease),transform .2s var(--ease);}
.back-top.is-visible{opacity:1;visibility:visible;}
.back-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}

@media (min-width:768px){
  .sticky-cta{right:24px;bottom:24px;width:auto;max-width:320px;}
  .sticky-cta .sticky-shell{background:#14181B;border-radius:14px;padding:12px 14px;box-shadow:0 14px 34px rgba(20,24,27,.22);}
  .sticky-cta .btn{padding:10px 18px;font-size:14px;}
  .sticky-close{width:30px;height:30px;border-radius:8px;border:1px solid rgba(237,231,220,.24);background:transparent;color:rgba(237,231,220,.75);display:grid;place-items:center;cursor:pointer;}
  .sticky-close:hover{border-color:var(--accent);color:var(--accent);}
}
@media (max-width:767.98px){
  .sticky-cta{left:0;right:0;bottom:0;background:#14181B;padding:9px 16px;transform:translateY(10px);}
  .sticky-cta.is-visible{transform:translateY(0);}
  .sticky-cta .sticky-shell{width:100%;}
  .sticky-cta .btn{flex:1;padding:12px 14px;font-size:14.5px;text-align:center;}
  .sticky-close{display:none;}
  .back-top{bottom:80px;right:16px;width:40px;height:40px;}
  .topbar-note,.topbar-sep,.topbar-domain{display:none;}
  .topbar-inner{justify-content:flex-end;}
  .article-body{padding:24px 20px 28px;}
  .article-body p{font-size:16px;}
  .article-body h2{margin-top:34px;}
  .cta-inner{padding:40px 22px;}
  .site-footer{padding-top:48px;}
  .nav-toggle{display:inline-grid;}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 桌面端专属 ---------- */
@media (min-width:992px){
  .side-sticky{position:sticky;top:96px;}
  .nav-toggle{display:none;}
  .article-body>p:first-of-type::first-letter{font-family:var(--serif);font-size:3.1em;line-height:.9;float:left;margin:6px 12px 0 0;color:var(--brand);}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-grid;}
  .side-sticky{margin-top:32px;}
  .article-actions{margin-top:26px;}
}
@media (max-width:575.98px){
  .brand-cn{font-size:14px;}
  .brand-sub{display:none;}
  .btn{padding:13px 20px;}
  .crumb-current{max-width:200px;}
}

/* roulang page: category1 */
:root{
  --brand:#1B5A4F;
  --brand-dark:#14463D;
  --brand-soft:#E7EFEC;
  --brand-22:rgba(27,90,79,.22);
  --accent:#C2703A;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --sand:#EDE7DC;
  --ink:#14181B;
  --muted:#6B7280;
  --line:rgba(20,24,27,.09);
  --danger:#A33B2A;
  --radius:14px;
  --radius-lg:18px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(20,24,27,.04);
  --shadow-2:0 10px 26px rgba(20,24,27,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;

  --bs-primary:#1B5A4F;
  --bs-primary-rgb:27,90,79;
  --bs-body-bg:#F7F4EE;
  --bs-body-color:#14181B;
  --bs-border-color:rgba(20,24,27,.09);
  --bs-border-radius:14px;
  --bs-link-color:#1B5A4F;
  --bs-link-hover-color:#14463D;
  --bs-font-sans-serif:var(--sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.005em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(27,90,79,.35);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#14181B;color:#EDE7DC;font-size:13px;min-height:36px;display:flex;align-items:center}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:36px;width:100%}
.topbar-note{color:rgba(237,231,220,.78);font-size:12.5px;letter-spacing:.01em}
.topbar-right{display:flex;align-items:center;gap:12px;font-size:12.5px}
.topbar-link{color:#EDE7DC;border-bottom:1px solid rgba(237,231,220,.4);padding-bottom:1px}
.topbar-link:hover{color:#fff;border-color:#fff}
.topbar-sep{width:1px;height:12px;background:rgba(237,231,220,.28);display:inline-block}
.topbar-domain{color:rgba(237,231,220,.6);font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:.02em}
@media (max-width:767.98px){
  .topbar-note{display:none}
  .topbar-domain,.topbar-sep{display:none}
}

/* ---------- 主导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,238,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-nav.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(20,24,27,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  background:var(--brand);color:#fff;font-family:var(--serif);
  font-size:19px;font-weight:700;letter-spacing:.01em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-cn{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:10.5px;letter-spacing:.18em;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;font-size:15px;color:#3A4147;padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand);transition:width .25s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  display:grid;place-items:center;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-22);color:var(--brand);background:var(--brand-soft)}
.icon-btn:active{transform:translateY(1px)}
.nav-toggle{display:none}
.nav-search{border-top:1px solid var(--line);background:var(--surface)}
.search-form{display:flex;gap:12px;padding:16px 0;max-width:640px}
.search-form .form-control{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:11px 14px;font-size:15px;background:var(--bg);color:var(--ink);
}
.search-form .form-control:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,90,79,.12);
  background:var(--surface);outline:none;
}
.search-form .form-control::placeholder{color:#9AA1A8}

/* ---------- 按钮 ---------- */
.btn{
  font-family:var(--sans);font-weight:600;border-radius:var(--radius-sm);
  border:1.5px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff;padding:14px 26px;font-size:15.5px}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(27,90,79,.22)}
.btn-brand:active{transform:none;box-shadow:none}
.btn-outline-brand{background:transparent;color:var(--brand);border-color:var(--brand);padding:12.5px 24px;font-size:15.5px}
.btn-outline-brand:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-outline-brand:active{transform:translateY(1px)}
.btn-light-brand{background:#F7F4EE;color:var(--brand-dark);padding:14px 26px;font-size:15.5px}
.btn-light-brand:hover{background:#fff;color:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.btn-sm-nav{padding:9px 16px;font-size:14px;border-radius:9px}
.btn-text{color:var(--brand);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;border-bottom:2px solid rgba(27,90,79,.35);padding-bottom:2px;transition:border-color .2s var(--ease)}
.btn-text:hover{border-color:var(--brand)}
.btn-text svg{transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}

/* ---------- 页面头 ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:40px 0 56px;
  background:linear-gradient(180deg,#EFEAE0 0%,rgba(247,244,238,0) 92%);
}
.cat-hero::after{
  content:"";position:absolute;right:-40px;top:32px;width:280px;height:280px;
  border-right:1px solid rgba(27,90,79,.14);border-bottom:1px solid rgba(27,90,79,.14);
  border-radius:0 0 32px 0;transform:rotate(-6deg);pointer-events:none;
}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.breadcrumb-bar a{color:var(--muted)}
.breadcrumb-bar a:hover{color:var(--brand)}
.breadcrumb-bar .sep{color:rgba(20,24,27,.25)}
.breadcrumb-bar .current{color:var(--ink);font-weight:500}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;margin-top:26px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--brand)}
.cat-hero h1{
  font-family:var(--serif);
  font-size:clamp(27px,3.8vw,44px);
  line-height:1.2;letter-spacing:-.01em;
  margin-top:14px;max-width:880px;
}
.cat-lead{max-width:780px;margin-top:18px;font-size:16.5px;line-height:1.9;color:#3A4147}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{background:var(--brand-soft);color:var(--brand);border-radius:6px;font-size:12.5px;padding:5px 12px;font-weight:500}

/* ---------- 主体布局 ---------- */
.cat-main{padding:24px 0 0}
.anchor-nav{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow-1);
}
.anchor-title{font-family:var(--serif);font-size:17px;font-weight:700;margin-bottom:12px}
.anchor-list a{
  display:flex;align-items:center;gap:10px;padding:10px 0;font-size:14.5px;color:#4A5157;
  border-bottom:1px dashed rgba(20,24,27,.08);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.anchor-list li:last-child a{border-bottom:0}
.anchor-list .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.45;flex:0 0 auto;transition:opacity .2s var(--ease)}
.anchor-list a:hover,.anchor-list a.is-active{color:var(--brand);font-weight:600}
.anchor-list a:hover .dot,.anchor-list a.is-active .dot{opacity:1}
.anchor-nav .btn{margin-top:16px}

/* ---------- 分组与卡片 ---------- */
.group-block{padding-top:6px}
.group-block + .group-block{margin-top:46px;padding-top:38px;border-top:1px solid var(--line)}
.group-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:22px}
.group-index{font-family:var(--serif);font-size:34px;line-height:1;color:var(--accent);letter-spacing:-.02em;flex:0 0 auto}
.group-head h2{font-family:var(--serif);font-size:clamp(20px,2.2vw,26px);line-height:1.3}
.group-desc{font-size:14.5px;color:var(--muted);margin-top:8px;line-height:1.8}
.cat-grid{row-gap:24px}
.card-post{
  height:100%;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card-post:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brand-22)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--sand)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card-post:hover .card-cover img{transform:scale(1.03)}
.card-cover::after{content:"";position:absolute;inset:0;border-bottom:1px solid rgba(20,24,27,.06)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge-soft{
  display:inline-block;background:var(--brand-soft);color:var(--brand);
  border-radius:6px;font-size:12px;font-weight:500;padding:3px 10px;align-self:flex-start;
}
.card-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-title a{color:inherit}
.card-title a:hover{color:var(--brand)}
.card-excerpt{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.card-meta .go{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600}
.card-meta .go svg{transition:transform .2s var(--ease)}
.card-post:hover .card-meta .go svg{transform:translateX(3px)}

/* ---------- 流程演示 ---------- */
.flow-block{margin-top:64px;padding-top:56px;border-top:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:34px}
.section-head h2{font-family:var(--serif);font-size:clamp(22px,2.6vw,32px);line-height:1.28}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.flow-demo{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.flow-steps{display:flex;flex-direction:column;gap:6px}
.flow-step{
  display:flex;gap:16px;padding:16px 18px;border-radius:12px;
  border:1px solid transparent;transition:background-color .22s var(--ease),border-color .22s var(--ease),opacity .22s var(--ease);
}
.flow-step .flow-num{font-family:var(--serif);font-size:22px;color:var(--accent);line-height:1.2;flex:0 0 34px}
.flow-step h3{font-size:16px;font-weight:600}
.flow-step p{font-size:14px;color:var(--muted);margin-top:5px;line-height:1.7}
.flow-step:not(.is-current){opacity:.6}
.flow-step.is-current{background:var(--surface);border-color:var(--brand-22);box-shadow:var(--shadow-1)}
.device-frame{background:var(--sand);border:1px solid var(--line);border-radius:16px;padding:14px}
.device-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;border:1px solid rgba(20,24,27,.06)}
.device-caption{font-size:13px;color:var(--muted);text-align:center;margin-top:12px}

/* ---------- 数据条 ---------- */
.metric-strip{
  margin-top:64px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);display:grid;grid-template-columns:repeat(4,1fr);
  padding:6px 0;box-shadow:var(--shadow-1);
}
.metric-item{padding:24px 18px;text-align:center;border-right:1px solid var(--line)}
.metric-item:last-child{border-right:0}
.metric-num{font-family:var(--serif);font-size:clamp(28px,3vw,38px);color:var(--brand);letter-spacing:-.02em;line-height:1.1}
.metric-num small{font-size:15px;font-family:var(--sans);font-weight:600;margin-left:2px}
.metric-label{font-size:13.5px;color:var(--muted);margin-top:8px}

/* ---------- 引用 ---------- */
.proof-block{margin-top:64px;padding-top:56px;border-top:1px solid var(--line)}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--radius);padding:24px 28px;
}
.quote-card + .quote-card{margin-top:18px}
.quote-card blockquote{margin:0;font-family:var(--serif);font-size:16.5px;line-height:1.85;color:#2A3035}
.quote-card footer{font-size:13.5px;color:var(--muted);margin-top:14px}
.quote-card footer strong{color:var(--ink);font-weight:600}

/* ---------- FAQ ---------- */
.faq-block{margin-top:64px;padding-top:56px;border-top:1px solid var(--line)}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;color:var(--ink);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 44px 20px 0;border-radius:0;
}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(27,90,79,.22);z-index:2}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent}
.faq-acc .accordion-button::after{
  background-image:none;content:"+";font-family:var(--sans);font-size:22px;font-weight:400;
  width:auto;height:auto;line-height:1;margin-left:auto;color:var(--accent);
  transform:none;transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand)}
.faq-acc .accordion-body{padding:0 44px 22px 0;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  margin:72px 0 72px;background:var(--brand);color:#fff;
  border-radius:var(--radius-lg);padding:56px 32px;text-align:center;
}
.cta-band h2{font-family:var(--serif);font-size:clamp(22px,2.6vw,32px);color:#fff;line-height:1.3}
.cta-band p{max-width:640px;margin:14px auto 28px;color:rgba(255,255,255,.82);font-size:15.5px;line-height:1.85}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-band .btn-outline-brand{color:#EAF1EF;border-color:rgba(255,255,255,.5)}
.cta-band .btn-outline-brand:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#14181B;color:rgba(237,231,220,.75);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand-mark{background:#EDE7DC;color:#14181B}
.footer-brand .brand-cn{color:#fff}
.footer-brand .brand-sub{color:rgba(237,231,220,.5)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(237,231,220,.68);max-width:300px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  display:grid;place-items:center;width:36px;height:36px;border-radius:10px;
  border:1px solid rgba(237,231,220,.18);color:rgba(237,231,220,.8);
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.footer-social a:hover{border-color:var(--accent);color:var(--accent);background:rgba(194,112,58,.08)}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;letter-spacing:.02em}
.footer-col a{display:block;padding:6px 0;color:rgba(237,231,220,.7);font-size:13.8px}
.footer-col a:hover{color:var(--accent)}
.footer-col li span{display:block;padding:6px 0;color:rgba(237,231,220,.62);font-size:13.8px}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(237,231,220,.14);
  padding:22px 0 28px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,231,220,.55);
}
.footer-bottom .mono{font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:.02em}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:flex;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:10px 12px;max-width:320px;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:none}
.sticky-text{font-size:13.5px;color:var(--muted);line-height:1.5}
.sticky-cta .btn{padding:9px 16px;font-size:14px;border-radius:9px}
.sticky-close{
  display:grid;place-items:center;width:28px;height:28px;border-radius:8px;
  border:1px solid var(--line);background:transparent;color:var(--muted);font-size:16px;line-height:1;
}
.sticky-close:hover{color:var(--brand);border-color:var(--brand-22);background:var(--brand-soft)}
.sticky-cta.is-closed{display:none}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 移动端抽屉 ---------- */
.nav-drawer{background:var(--surface);width:320px}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer-title{font-family:var(--serif);font-size:17px;font-weight:700}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;color:var(--ink);font-size:15.5px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand);font-weight:600}
.drawer-foot{margin-top:22px}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:20px}
  .nav-links a{font-size:14.5px}
  .flow-demo{gap:32px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .anchor-nav{position:static;margin-bottom:28px}
  .flow-demo{grid-template-columns:1fr}
  .flow-demo .device-frame{order:-1}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .metric-item:nth-child(2n){border-right:0}
  .metric-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  body{padding-bottom:78px}
  .cat-hero{padding:30px 0 42px}
  .cat-hero::after{display:none}
  .cat-main{padding-top:8px}
  .group-block + .group-block{margin-top:38px;padding-top:30px}
  .flow-block,.proof-block,.faq-block{margin-top:52px;padding-top:44px}
  .cta-band{margin:56px 0;padding:44px 22px;border-radius:16px}
  .card-post{border-radius:12px}
  .sticky-cta{
    left:0;right:0;bottom:0;max-width:none;width:100%;
    border-radius:14px 14px 0 0;padding:10px 14px;height:64px;
    justify-content:space-between;gap:10px;
  }
  .sticky-cta .btn{flex:1;padding:11px 12px}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .btn-sm-nav{display:none}
  .brand-cn{font-size:15.5px}
  .brand-mark{width:40px;height:40px;font-size:17px;border-radius:10px}
  .metric-strip{grid-template-columns:1fr}
  .metric-item{border-right:0;border-bottom:1px solid var(--line)}
  .metric-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .card-body{padding:16px 16px 18px}
  .quote-card{padding:20px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#1B5A4F;
  --brand-dark:#14463D;
  --brand-soft:#E7EFEC;
  --accent:#C2703A;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --sand:#EDE7DC;
  --ink:#14181B;
  --muted:#6B7280;
  --line:rgba(20,24,27,.09);
  --danger:#A33B2A;

  --radius-sm:10px;
  --radius:14px;
  --radius-lg:18px;
  --shadow-1:0 1px 2px rgba(20,24,27,.04);
  --shadow-2:0 10px 26px rgba(20,24,27,.08);
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#1B5A4F;
  --bs-primary-rgb:27,90,79;
  --bs-body-bg:#F7F4EE;
  --bs-body-color:#14181B;
  --bs-border-radius:14px;
  --bs-border-color:rgba(20,24,27,.09);
  --bs-link-color:#1B5A4F;
  --bs-link-hover-color:#14463D;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-heading-color:#14181B;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;color:var(--ink);letter-spacing:-.01em;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,90,79,.28);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;padding-inline:20px;margin-inline:auto;}
.section{padding-block:88px;}
.section-tight{padding-block:64px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:10px;height:10px;background:var(--accent);border-radius:2px;display:block;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28;}
.sec-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:640px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* topbar */
.topbar{background:var(--ink);color:#F1EDE4;font-size:12.5px;line-height:1.4;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px;}
.topbar-note{color:rgba(241,237,228,.82);}
.topbar-right{display:flex;align-items:center;gap:14px;}
.topbar-right a{color:#F1EDE4;font-weight:600;border-bottom:1px solid rgba(241,237,228,.4);padding-bottom:1px;}
.topbar-right a:hover{color:var(--accent);border-color:var(--accent);}
.topbar-right .divider{width:1px;height:13px;background:rgba(241,237,228,.28);}
.topbar-domain{color:rgba(241,237,228,.6);letter-spacing:.04em;}

/* nav */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,238,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(20,24,27,.06);}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:44px;height:44px;border-radius:12px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-family:"Noto Serif SC",serif;font-size:17px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-cn{font-family:"Noto Serif SC",serif;font-size:17px;font-weight:600;color:var(--ink);}
.brand-sub{font-size:10px;letter-spacing:.22em;color:var(--muted);}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;color:#2C3336;padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--brand);font-weight:600;}
.nav-links a.active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--brand);display:grid;place-items:center;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);border-color:rgba(27,90,79,.28);}
.nav-search{border-top:1px solid var(--line);background:var(--surface);}
.search-form{display:flex;gap:10px;padding:16px 0;}
.search-form .form-control{
  border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;font-size:15px;
  background:#FCFBF8;box-shadow:none;
}
.search-form .form-control:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,90,79,.12);}

/* buttons */
.btn{
  border-radius:var(--radius-sm);font-weight:600;font-size:15px;
  padding:14px 26px;border:1.5px solid transparent;line-height:1.2;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(27,90,79,.22);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-sand{background:#F4EFE4;color:var(--brand-dark);border-color:rgba(20,24,27,.08);}
.btn-sand:hover{background:#fff;color:var(--brand-dark);}
.btn-sm-nav{padding:10px 18px;font-size:14px;}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-more{
  font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}
.link-more svg{transition:transform .2s var(--ease);}
.link-more:hover svg{transform:translateX(3px);}

/* badges & tags */
.badge-soft{
  display:inline-block;background:var(--brand-soft);color:var(--brand);
  border-radius:6px;font-size:12px;font-weight:500;padding:3px 10px;line-height:1.6;
}
.badge-accent{background:rgba(194,112,58,.12);color:#9A5527;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);color:#F4F0E8;
  border-radius:6px;font-size:12.5px;padding:4px 11px;
}

/* cat hero */
.cat-hero{
  position:relative;overflow:hidden;
  min-height:300px;display:flex;align-items:center;
  background-image:linear-gradient(100deg,rgba(20,24,27,.9) 0%,rgba(20,24,27,.72) 44%,rgba(27,90,79,.42) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  color:#F4F0E8;
}
.cat-hero .cat-hero-inner{padding-block:64px;max-width:760px;}
.breadcrumb-bar{font-size:13px;color:rgba(244,240,232,.72);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:20px;}
.breadcrumb-bar a{color:rgba(244,240,232,.78);}
.breadcrumb-bar a:hover{color:var(--accent);}
.breadcrumb-bar .sep{opacity:.5;}
.cat-hero h1{
  color:#fff;font-size:clamp(28px,4.4vw,46px);line-height:1.18;margin-bottom:18px;
}
.cat-hero .lead{font-size:16.5px;line-height:1.85;color:rgba(244,240,232,.85);max-width:640px;}
.cat-hero .tag-row{margin-top:24px;}

/* cards */
.cat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-2);border-color:rgba(27,90,79,.28);}
.cat-card .card-media{overflow:hidden;aspect-ratio:16/10;background:var(--sand);}
.cat-card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.cat-card:hover .card-media img{transform:scale(1.03);}
.cat-card .card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cat-card h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cat-card p{color:var(--muted);font-size:14.5px;line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:13px;color:var(--muted);}

/* steps */
.step-list{border-top:1px solid var(--line);}
.step-item{
  display:grid;grid-template-columns:104px 1fr;gap:26px;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.step-no{
  font-family:"Noto Serif SC",serif;font-size:44px;line-height:1;color:var(--accent);
  letter-spacing:-.02em;
}
.step-item h3{font-size:17px;font-weight:600;font-family:var(--bs-body-font-family);margin-bottom:8px;}
.step-item p{color:var(--muted);font-size:15px;line-height:1.8;max-width:760px;}
.step-meta{margin-top:12px;font-size:13px;color:var(--muted);}

/* metrics */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;
}
.metric{padding:30px 26px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;}
.metric .num{font-family:"Noto Serif SC",serif;font-size:clamp(28px,3vw,38px);color:var(--brand);letter-spacing:-.02em;line-height:1;}
.metric .cap{font-size:13.5px;color:var(--muted);margin-top:10px;}

/* quote proof */
.proof-quote{
  background:var(--sand);border-radius:var(--radius-lg);padding:36px 40px;border:1px solid var(--line);
  margin-top:32px;
}
.proof-quote .mark{font-family:"Noto Serif SC",serif;font-size:46px;color:var(--accent);line-height:.8;}
.proof-quote blockquote{margin:14px 0 18px;font-size:16.5px;line-height:1.9;color:#2B3134;font-family:"Noto Serif SC",serif;}
.proof-quote cite{font-style:normal;font-size:13.5px;color:var(--muted);}

/* faq */
.faq-acc .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;padding:24px 44px 24px 0;
  font-size:16px;font-weight:600;color:var(--ink);border-radius:0;
  display:flex;align-items:center;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-acc .accordion-button::after{
  background-image:none;content:"";position:absolute;right:8px;
  width:14px;height:14px;
  background:
    linear-gradient(var(--brand),var(--brand)) center/14px 1.5px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/1.5px 14px no-repeat;
  transition:transform .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-acc .accordion-body{padding:0 60px 26px 0;color:var(--muted);font-size:15px;line-height:1.85;}

/* cta band */
.cta-band{
  background:var(--brand-dark);border-radius:var(--radius-lg);
  padding:56px 40px;text-align:center;color:#F1EDE4;
  background-image:radial-gradient(circle at 88% 12%,rgba(194,112,58,.28),transparent 46%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.cta-band p{color:rgba(241,237,228,.82);font-size:15.5px;max-width:620px;margin:0 auto 28px;}
.cta-band .btn-sand{font-size:16px;padding:15px 32px;}

/* footer */
.site-footer{background:var(--ink);color:rgba(241,237,228,.78);margin-top:72px;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.site-footer h4{
  color:#fff;font-size:16px;font-family:"Noto Serif SC",serif;margin-bottom:18px;
}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand .brand-cn{color:#fff;}
.footer-brand .brand-sub{color:rgba(241,237,228,.5);}
.footer-brand p{font-size:14px;line-height:1.85;margin:18px 0 20px;max-width:320px;}
.social-row{display:flex;gap:10px;}
.social-row a{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(241,237,228,.18);
  display:grid;place-items:center;color:rgba(241,237,228,.8);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.social-row a:hover{background:rgba(194,112,58,.2);color:#fff;border-color:rgba(194,112,58,.5);}
.footer-list li{margin-bottom:11px;font-size:14px;}
.footer-list a{color:rgba(241,237,228,.78);}
.footer-list a:hover{color:var(--accent);}
.footer-contact li{font-size:14px;margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;color:rgba(241,237,228,.72);}
.footer-contact svg{flex:0 0 auto;margin-top:3px;color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(241,237,228,.12);
  padding:22px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(241,237,228,.58);
}

/* sticky cta */
.sticky-cta{
  position:fixed;z-index:1040;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
  border-radius:var(--radius);
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.sticky-cta .sticky-actions{display:flex;gap:10px;align-items:center;}
.sticky-close{
  width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:var(--surface);
  color:var(--muted);display:grid;place-items:center;
}
.sticky-close:hover{background:var(--sand);color:var(--ink);}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

@media (max-width:1199.98px){
  .nav-inner{gap:20px;}
  .nav-links{gap:18px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-inner{min-height:66px;}
  .section{padding-block:72px;}
  .step-item{grid-template-columns:76px 1fr;gap:18px;}
  .step-no{font-size:36px;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .section{padding-block:52px;}
  .container{padding-inline:16px;}
  .cat-hero .cat-hero-inner{padding-block:46px;}
  .cat-card{border-radius:12px;}
  .cta-band{padding:40px 22px;}
  .proof-quote{padding:26px 22px;}
  .faq-acc .accordion-body{padding-right:8px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .topbar .topbar-note{display:none;}
  .sticky-cta{
    left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  }
  .sticky-cta .sticky-actions{width:100%;}
  .sticky-cta .btn{flex:1;padding:13px 12px;font-size:14.5px;}
  .sticky-cta .sticky-close{display:none;}
  body.has-sticky{padding-bottom:70px;}
}
@media (min-width:768px){
  .sticky-cta{right:26px;bottom:26px;width:320px;padding:14px 16px;}
  .sticky-cta .sticky-top-line{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;}
  .sticky-cta .sticky-tip{font-size:13px;color:var(--muted);}
}
@media (max-width:575.98px){
  .cat-hero h1{font-size:28px;}
  .step-item{grid-template-columns:1fr;gap:10px;}
  .metric-strip{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--line);}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --brand:#1B5A4F;
  --brand-dark:#14463D;
  --brand-soft:#E7EFEC;
  --accent:#C2703A;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --sand:#EDE7DC;
  --ink:#14181B;
  --muted:#6B7280;
  --line:rgba(20,24,27,.09);
  --danger:#A33B2A;
  --radius:14px;
  --radius-lg:18px;
  --shadow-1:0 1px 2px rgba(20,24,27,.04);
  --shadow-2:0 10px 26px rgba(20,24,27,.08);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-body-bg:#F7F4EE;
  --bs-body-color:#14181B;
  --bs-primary:#1B5A4F;
  --bs-primary-rgb:27,90,79;
  --bs-link-color:#1B5A4F;
  --bs-link-hover-color:#14463D;
  --bs-border-radius:14px;
  --bs-border-color:rgba(20,24,27,.09);
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 220ms var(--ease)}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;margin:0}
p{margin:0}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,90,79,.28);border-radius:8px}

.container{max-width:1200px;padding-left:20px;padding-right:20px}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:#14181B;
  color:rgba(247,244,238,.86);
  font-size:12.5px;
  letter-spacing:.01em;
}
.topbar .container{
  min-height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:8px}
.topbar-left .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.topbar-right{display:flex;align-items:center;gap:12px}
.topbar-right a{color:rgba(247,244,238,.94);font-weight:500;border-bottom:1px solid rgba(247,244,238,.35);padding-bottom:1px}
.topbar-right a:hover{color:#fff;border-bottom-color:var(--accent)}
.topbar-domain{color:rgba(247,244,238,.6);padding-left:12px;border-left:1px solid rgba(247,244,238,.2);letter-spacing:.04em}
@media (max-width:767.98px){
  .topbar-left{display:none}
  .topbar .container{justify-content:flex-end;min-height:34px}
}

/* ---------- 主导航 ---------- */
.site-nav{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.site-nav.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(20,24,27,.06);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:74px;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  text-decoration:none;
  flex:none;
}
.brand-mark{
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  color:#fff;
  background:var(--brand);
  border-radius:9px;
  padding:7px 11px;
  line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-cn{font-size:16px;font-weight:600;color:var(--ink);letter-spacing:.01em}
.brand-sub{font-size:9.5px;letter-spacing:.2em;color:var(--muted);margin-top:3px}
.brand:hover .brand-mark{background:var(--brand-dark)}
.brand:hover .brand-cn{color:var(--brand)}

.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:#3A4146;
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 220ms var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(.6)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:10px;
  color:#3A4146;
  cursor:pointer;
  transition:220ms var(--ease);
}
.icon-btn:hover{border-color:rgba(27,90,79,.35);color:var(--brand);background:var(--brand-soft)}
.nav-toggle{display:none}

.btn{
  border-radius:10px;
  font-weight:500;
  font-size:15px;
  transition:220ms var(--ease);
  box-shadow:none;
}
.btn:focus-visible{box-shadow:0 0 0 3px rgba(27,90,79,.25)}
.btn-brand{
  background:var(--brand);
  border:1px solid var(--brand);
  color:#fff;
  padding:12px 24px;
}
.btn-brand:hover,.btn-brand:focus{
  background:var(--brand-dark);
  border-color:var(--brand-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 22px rgba(20,24,27,.16);
}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.btn-sm-nav{padding:9px 18px;font-size:14px}
.btn-ghost{
  background:transparent;
  border:1.5px solid var(--brand);
  color:var(--brand);
  padding:11px 24px;
}
.btn-ghost:hover{
  background:var(--brand-soft);
  color:var(--brand-dark);
  border-color:var(--brand-dark);
}
.btn-onband{
  background:#F7F4EE;
  border:1px solid #F7F4EE;
  color:var(--brand-dark);
  padding:13px 28px;
  font-weight:600;
}
.btn-onband:hover{background:#fff;color:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.22)}
.btn-outline-light-2{
  background:transparent;
  border:1.5px solid rgba(247,244,238,.55);
  color:#F7F4EE;
  padding:11px 24px;
}
.btn-outline-light-2:hover{background:rgba(247,244,238,.12);color:#fff;border-color:#F7F4EE}

.nav-search{border-top:1px solid var(--line);background:var(--surface)}
.nav-search .container{padding-top:14px;padding-bottom:14px}
.search-form{display:flex;gap:10px;max-width:560px}
.form-control{
  border:1px solid var(--line);
  border-radius:10px;
  padding:12px 14px;
  font-size:15px;
  background:#fff;
  color:var(--ink);
  box-shadow:none;
}
.form-control:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(27,90,79,.12);
}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{border-left:1px solid var(--line);width:min(320px,88vw)}
.nav-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:16px 20px;
}
.drawer-title{font-family:var(--serif);font-size:17px;font-weight:600}
.nav-drawer .offcanvas-body{padding:6px 0 24px}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:52px;
  padding:0 20px;
  font-size:15.5px;
  color:#3A4146;
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-link.active{color:var(--brand);font-weight:600;border-left:3px solid var(--brand);padding-left:17px}

/* ---------- 分类页头部 ---------- */
.cat-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,#F7F4EE 100%);
  border-bottom:1px solid var(--line);
  padding:30px 0 56px;
}
.breadcrumb-bar{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:26px;
}
.breadcrumb-bar a{color:var(--muted)}
.breadcrumb-bar a:hover{color:var(--brand)}
.breadcrumb-bar .sep{opacity:.5}
.breadcrumb-bar .current{color:var(--ink);font-weight:500}

.cat-hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--brand);
  font-weight:600;
  margin-bottom:16px;
}
.eyebrow i{width:8px;height:8px;background:var(--brand);border-radius:2px;display:inline-block}
.cat-hero h1{
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.2;
  letter-spacing:-.015em;
  margin-bottom:18px;
}
.lead-p{
  font-size:16.5px;
  line-height:1.85;
  color:#3F464B;
  max-width:620px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-block;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12.5px;
  font-weight:500;
  padding:4px 11px;
  border-radius:6px;
  line-height:1.6;
}
.tag-accent{background:rgba(194,112,58,.1);color:#9C5626}
.cat-hero-media{position:relative}
.cat-hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 48px) 0,100% 48px,100% 100%,0 100%);
}
.cat-hero-media::before{
  content:"";
  position:absolute;
  left:-14px;
  bottom:-14px;
  width:96px;
  height:96px;
  border-left:1.5px solid rgba(194,112,58,.5);
  border-bottom:1.5px solid rgba(194,112,58,.5);
  border-radius:0 0 0 12px;
  pointer-events:none;
}

/* ---------- 数据条 ---------- */
.metric-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.metric-item{
  padding:26px 22px;
  border-left:1px solid var(--line);
}
.metric-item:first-child{border-left:0;padding-left:0}
.metric-item .num{
  font-family:var(--serif);
  font-size:clamp(24px,2.2vw,32px);
  letter-spacing:-.02em;
  color:var(--brand);
  line-height:1.1;
}
.metric-item .num em{font-style:normal;font-size:.55em;color:var(--accent);margin-left:2px}
.metric-item .cap{font-size:13.5px;color:var(--muted);margin-top:8px}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0}
.section-tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:15.5px}
.head-rule{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  letter-spacing:.1em;
  color:var(--accent);
  font-weight:600;
  margin-bottom:14px;
}
.head-rule::before{content:"";width:26px;height:1.5px;background:var(--accent);display:inline-block}

/* ---------- 交错图文行 ---------- */
.cat-rows{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cat-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:52px 0;
  border-top:1px solid var(--line);
}
.cat-row:first-of-type{border-top:0}
.cat-row-rev .cat-row-media{order:2}
.cat-row-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius);
  border:1px solid var(--line);
  transition:transform 420ms var(--ease);
}
.cat-row-media{overflow:hidden;border-radius:var(--radius)}
.cat-row:hover .cat-row-media img{transform:scale(1.03)}
.row-num{
  display:block;
  font-family:var(--serif);
  font-size:clamp(40px,4vw,56px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--accent);
  opacity:.85;
  margin-bottom:12px;
}
.cat-row-body h3{
  font-size:20px;
  line-height:1.45;
  margin-bottom:12px;
}
.cat-row-body p{
  color:#4A5257;
  font-size:15.5px;
  line-height:1.85;
  max-width:520px;
}
.cat-row-body .cat-badge{
  display:inline-block;
  font-size:12px;
  font-weight:500;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:6px;
  padding:3px 10px;
  margin-bottom:12px;
}
.text-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:18px;
  font-size:15px;
  font-weight:500;
  color:var(--brand);
}
.text-link::before{
  content:"";
  position:absolute;
  left:0;bottom:-4px;
  height:2px;
  width:60%;
  background:rgba(27,90,79,.4);
  transition:width 240ms var(--ease),background 240ms var(--ease);
}
.text-link:hover::before{width:100%;background:var(--brand)}
.text-link svg{transition:transform 240ms var(--ease)}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- 快速核对 ---------- */
.check-section{background:var(--bg)}
.check-grid{
  display:grid;
  grid-template-columns:.85fr 1.6fr;
  gap:56px;
  align-items:start;
}
.check-intro h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.32;
  margin-bottom:16px;
}
.check-intro p{color:var(--muted);font-size:15.5px}
.check-list li{
  display:flex;
  gap:18px;
  padding:22px 0;
  border-top:1px solid var(--line);
}
.check-list li:last-child{border-bottom:1px solid var(--line)}
.check-list .idx{
  flex:none;
  width:30px;height:30px;
  border-radius:8px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  display:grid;
  place-items:center;
}
.check-list h3{
  font-size:16.5px;
  font-weight:600;
  font-family:var(--sans);
  margin-bottom:6px;
}
.check-list p{color:var(--muted);font-size:15px;line-height:1.8}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  border-radius:0;
}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;
  box-shadow:none;
  padding:22px 44px 22px 0;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  font-family:var(--sans);
  border-radius:0;
  display:flex;
  align-items:center;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button::after{
  content:"";
  width:16px;height:16px;
  margin-left:auto;
  background-image:
    linear-gradient(currentColor,currentColor),
    linear-gradient(currentColor,currentColor);
  background-size:16px 1.5px,1.5px 16px;
  background-position:center,center;
  background-repeat:no-repeat;
  color:var(--muted);
  transition:transform 220ms var(--ease),color 220ms var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  color:var(--brand);
}
.faq-acc .accordion-body{
  padding:0 44px 24px 0;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-wrap{padding:88px 0 0}
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-dark);
  border-radius:18px;
  padding:64px 40px;
  text-align:center;
  color:#F7F4EE;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:260px;height:260px;
  border:1px solid rgba(247,244,238,.14);
  border-radius:50%;
  pointer-events:none;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-30px;
  bottom:-70px;
  width:200px;height:200px;
  border:1px solid rgba(247,244,238,.1);
  border-radius:50%;
  pointer-events:none;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.8vw,32px);
  margin-bottom:16px;
  position:relative;
  z-index:1;
}
.cta-band p{
  color:rgba(247,244,238,.82);
  max-width:620px;
  margin:0 auto 30px;
  font-size:15.5px;
  position:relative;
  z-index:1;
}
.cta-actions{
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:#14181B;
  color:rgba(247,244,238,.76);
  padding:68px 0 26px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
}
.brand-foot .brand-cn{color:#F7F4EE}
.brand-foot .brand-sub{color:rgba(247,244,238,.5)}
.brand-foot .brand-mark{background:var(--brand)}
.foot-desc{
  margin-top:18px;
  font-size:14px;
  line-height:1.85;
  color:rgba(247,244,238,.66);
  max-width:300px;
}
.foot-quote{
  margin-top:16px;
  font-size:13.5px;
  color:rgba(247,244,238,.6);
  border-left:2px solid var(--accent);
  padding-left:12px;
}
.foot-quote strong{color:#F7F4EE;font-weight:600}
.foot-social{display:flex;gap:10px;margin-top:22px}
.foot-social a{
  width:36px;height:36px;
  display:grid;place-items:center;
  border:1px solid rgba(247,244,238,.18);
  border-radius:10px;
  color:rgba(247,244,238,.75);
}
.foot-social a:hover{border-color:var(--accent);color:var(--accent);background:rgba(194,112,58,.08)}
.foot-col h4{
  font-family:var(--sans);
  font-size:14px;
  font-weight:600;
  color:#F7F4EE;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.foot-col ul li{margin-bottom:12px}
.foot-col ul a{
  color:rgba(247,244,238,.7);
  font-size:14px;
}
.foot-col ul a:hover{color:var(--accent)}
.foot-info p{font-size:14px;color:rgba(247,244,238,.66);margin-bottom:10px;line-height:1.8}
.foot-info .mono{color:#F7F4EE;letter-spacing:.03em}
.foot-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(247,244,238,.12);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(247,244,238,.52);
}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1040;
  display:flex;
  align-items:center;
  gap:10px;
  max-width:330px;
  padding:9px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:0 14px 34px rgba(20,24,27,.14);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity 260ms var(--ease),transform 260ms var(--ease),visibility 260ms;
}
.sticky-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.sticky-cta .btn{padding:10px 20px;font-size:14px}
.sticky-close{
  width:32px;height:32px;
  border:0;background:transparent;
  color:var(--muted);
  border-radius:50%;
  display:grid;place-items:center;
  cursor:pointer;
}
.sticky-close:hover{background:var(--sand);color:var(--ink)}

/* ---------- 入场动效 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,
  [data-reveal]{
    transition:none !important;
    animation:none !important;
  }
  [data-reveal]{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:20px}
  .nav-links a{font-size:14.5px}
}

@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .btn-sm-nav{display:none}
  .nav-inner{min-height:66px;gap:16px}
  .cat-hero-grid{grid-template-columns:1fr;gap:30px}
  .cat-hero-media{order:-1}
  .cat-hero-media img{aspect-ratio:16/9}
  .cat-hero-media::before{display:none}
  .metric-grid{grid-template-columns:1fr 1fr}
  .metric-item{border-left:0;border-top:1px solid var(--line);padding-left:0}
  .metric-item:nth-child(n+3){border-top:1px solid var(--line)}
  .section{padding:72px 0}
  .cat-row{grid-template-columns:1fr;gap:22px;padding:40px 0}
  .cat-row-rev .cat-row-media{order:0}
  .check-grid{grid-template-columns:1fr;gap:28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-wrap{padding:72px 0 0}
  .site-footer{margin-top:72px}
}

@media (max-width:767.98px){
  body{font-size:16px;padding-bottom:72px}
  .container{padding-left:16px;padding-right:16px}
  .section{padding:52px 0}
  .section-tight{padding:48px 0}
  .cat-hero{padding:18px 0 40px}
  .cat-hero h1{font-size:28px}
  .lead-p{font-size:15.5px}
  .section-head{margin-bottom:28px}
  .metric-item{padding:20px 0}
  .cat-row-media img{border-radius:12px}
  .row-num{font-size:38px}
  .cta-band{padding:44px 22px;border-radius:14px}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;gap:8px}
  .sticky-cta{
    left:0;right:0;bottom:0;
    max-width:none;
    width:100%;
    border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
    padding:8px 14px;
    gap:10px;
    box-shadow:0 -6px 20px rgba(20,24,27,.1);
  }
  .sticky-cta .btn{flex:1;padding:12px 10px}
  .sticky-close{display:none}
}

@media (max-width:575.98px){
  .brand-mark{font-size:17px;padding:6px 9px}
  .brand-cn{font-size:15px}
  .brand-sub{font-size:9px}
  .cat-hero h1{font-size:28px;line-height:1.24}
  .btn{padding:12px 20px}
  .btn-ghost{padding:10px 20px}
}

/* roulang page: category4 */
:root{
  --brand:#1B5A4F;
  --brand-dark:#14463D;
  --brand-soft:#E7EFEC;
  --accent:#C2703A;
  --bg:#F7F4EE;
  --surface:#FFFFFF;
  --sand:#EDE7DC;
  --ink:#14181B;
  --muted:#6B7280;
  --line:rgba(20,24,27,.09);
  --danger:#A33B2A;
  --radius:14px;
  --radius-lg:18px;
  --shadow-1:0 1px 2px rgba(20,24,27,.04);
  --shadow-2:0 10px 26px rgba(20,24,27,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Helvetica,Arial,sans-serif;
  --bs-primary:#1B5A4F;
  --bs-body-bg:#F7F4EE;
  --bs-body-color:#14181B;
  --bs-border-radius:14px;
  --bs-link-color:#1B5A4F;
  --bs-link-hover-color:#14463D;
  --bs-font-sans-serif:var(--sans);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);letter-spacing:-.01em;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(27,90,79,.28);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:88px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ 顶部信息条 ============ */
.topbar{background:#14181B;color:#EFEAE0;font-size:12.5px;letter-spacing:.02em}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-note{color:rgba(239,234,224,.72)}
.topbar-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.topbar-link{color:#EFEAE0;font-weight:500}
.topbar-link:hover{color:var(--accent)}
.topbar-divider{width:1px;height:12px;background:rgba(239,234,224,.28)}
.topbar-domain{color:rgba(239,234,224,.6);font-size:12px;letter-spacing:.06em}

/* ============ 主导航 ============ */
.site-nav{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,238,.95);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-nav.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(20,24,27,.06)}
.nav-inner{display:flex;align-items:center;gap:26px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  font-family:var(--serif);font-weight:700;font-size:21px;letter-spacing:.01em;
  width:46px;height:46px;border-radius:12px;background:var(--brand);color:#fff;
  display:grid;place-items:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-cn{font-size:15.5px;font-weight:600;letter-spacing:.01em}
.brand-sub{font-size:10px;letter-spacing:.18em;color:var(--muted);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:26px;margin:0 auto}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:#fff;
  color:var(--ink);display:grid;place-items:center;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand);border-color:rgba(27,90,79,.22)}
.nav-toggle{display:none}
.nav-search{border-top:1px solid var(--line);background:rgba(247,244,238,.99)}
.nav-search .container{padding-top:14px;padding-bottom:14px}
.search-form{display:flex;gap:10px;max-width:660px}
.search-form .form-control{
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);
  padding:12px 14px;font-size:15px;box-shadow:none;
}
.search-form .form-control:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(27,90,79,.12)}

/* 移动端抽屉 */
.nav-drawer{background:var(--bg);width:312px;border-left:1px solid var(--line)}
.nav-drawer .offcanvas-header{padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-title{font-family:var(--serif);font-size:17px;font-weight:600}
.nav-drawer .offcanvas-body{padding:12px 20px 28px;display:flex;flex-direction:column}
.drawer-links{display:flex;flex-direction:column;margin-bottom:22px}
.drawer-links a{
  color:var(--ink);font-size:15px;line-height:52px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a::after{content:"";width:6px;height:6px;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:rotate(-45deg)}
.drawer-links a.active{color:var(--brand);font-weight:600}
.drawer-links a.active::after{border-color:var(--brand)}

/* ============ 按钮 ============ */
.btn{
  border-radius:10px;font-weight:600;font-size:15px;line-height:1.2;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand{background:var(--brand);border:1px solid var(--brand);color:#fff;padding:14px 26px}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(20,70,61,.22)}
.btn-brand:active{transform:none;box-shadow:none}
.btn-ghost{background:transparent;border:1.5px solid var(--brand);color:var(--brand);padding:12.5px 24px}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-sm-nav{padding:10px 16px;font-size:14px}
.btn-inverse{background:#F7F4EE;border:1px solid #F7F4EE;color:#14181B;padding:14px 28px}
.btn-inverse:hover{background:#fff;border-color:#fff;color:#14181B;transform:translateY(-1px);box-shadow:0 8px 22px rgba(0,0,0,.2)}
.btn-outline-light-2{background:transparent;border:1.5px solid rgba(247,244,238,.55);color:#F7F4EE;padding:12.5px 24px}
.btn-outline-light-2:hover{background:rgba(247,244,238,.12);color:#fff;border-color:#F7F4EE}

/* ============ 分类页头部 ============ */
.cat-hero{position:relative;overflow:hidden;background:#0F322C;color:#fff;border-radius:0 0 var(--radius-lg) var(--radius-lg)}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.34;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(9,30,26,.95) 0%,rgba(9,30,26,.82) 48%,rgba(9,30,26,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:52px;padding-bottom:56px;min-height:300px;display:flex;flex-direction:column;justify-content:center}
.breadcrumb-line{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(247,244,238,.66);margin-bottom:16px}
.breadcrumb-line a{color:rgba(247,244,238,.82)}
.breadcrumb-line a:hover{color:#fff}
.breadcrumb-line .sep{color:rgba(247,244,238,.38)}
.breadcrumb-line .current{color:#fff}
.cat-hero h1{
  color:#fff;font-size:clamp(28px,4.2vw,46px);line-height:1.2;letter-spacing:-.01em;
  max-width:760px;
}
.cat-lead{
  margin-top:18px;max-width:720px;color:rgba(247,244,238,.85);font-size:16px;line-height:1.85;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span{
  font-size:12.5px;padding:5px 12px;border-radius:6px;
  background:rgba(247,244,238,.12);color:#F1EDE4;border:1px solid rgba(247,244,238,.2);
}

/* ============ 通用区块标题 ============ */
.section-head{max-width:720px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.1em;color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:9px;height:9px;background:var(--accent);border-radius:2px;display:inline-block}
.section-head h2{font-size:clamp(22px,2.6vw,34px);line-height:1.28}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
}
.link-more svg{transition:transform .2s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}

/* ============ 编号清单 ============ */
.num-list{border-top:1px solid var(--line)}
.num-item{
  display:flex;align-items:flex-start;gap:20px;padding:24px 6px;
  border-bottom:1px solid var(--line);transition:background .22s var(--ease),padding .22s var(--ease);
}
.num-item:hover{background:#fff;padding-left:14px;padding-right:14px;border-radius:12px}
.num-index{
  font-family:var(--serif);font-size:clamp(34px,4vw,48px);line-height:1;color:var(--accent);
  letter-spacing:-.02em;min-width:62px;flex:0 0 auto;
}
.num-body h3{font-size:17px;font-weight:600;line-height:1.5;transition:color .2s var(--ease)}
.num-item:hover .num-body h3{color:var(--brand)}
.num-body p{margin-top:6px;color:var(--muted);font-size:14.5px;line-height:1.75}
.num-arrow{flex:0 0 auto;color:var(--muted);margin-top:6px;transition:transform .22s var(--ease),color .22s var(--ease)}
.num-item:hover .num-arrow{transform:translateX(4px);color:var(--brand)}

/* ============ 侧栏提示卡 ============ */
.side-stack{display:flex;flex-direction:column;gap:20px}
.tip-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(27,90,79,.22)}
.tip-label{font-size:12.5px;font-weight:600;letter-spacing:.1em;color:var(--accent);display:block;margin-bottom:16px}
.data-list li{display:flex;align-items:baseline;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line)}
.data-list li:last-child{border-bottom:0;padding-bottom:0}
.data-list strong{font-family:var(--serif);font-size:32px;line-height:1;color:var(--brand);letter-spacing:-.02em;min-width:52px}
.data-list span{font-size:14px;color:var(--muted)}
.tip-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.tip-head h3{font-size:16.5px;font-weight:600}
.tip-head svg{color:var(--brand);flex:0 0 auto}
.tip-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.tip-steps li{position:relative;padding-left:22px;font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:10px}
.tip-steps li:last-child{margin-bottom:0}
.tip-steps li::before{
  content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);border:1.5px solid var(--brand);
}
.tip-card .link-more{margin-top:16px}

/* ============ 三步流程 ============ */
.path-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative}
.path-step{padding:0 28px;position:relative}
.path-step:first-child{padding-left:0}
.path-step:last-child{padding-right:0}
.path-step::after{
  content:"";position:absolute;right:0;top:26px;width:1px;height:calc(100% - 40px);background:var(--line);
}
.path-step:last-child::after{display:none}
.step-badge{
  width:52px;height:52px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-family:var(--serif);font-size:22px;font-weight:700;
  letter-spacing:-.02em;margin-bottom:18px;border:1px solid rgba(27,90,79,.14);
}
.path-step h3{font-size:17px;font-weight:600;margin-bottom:10px}
.path-step p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ 对照核查 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.compare-col{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow-1);
}
.compare-col h3{font-size:18px;font-weight:600;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.compare-col h3 svg{flex:0 0 auto}
.compare-ok h3 svg{color:var(--brand)}
.compare-warn h3 svg{color:var(--danger)}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;line-height:1.85;color:#2A3034;margin-bottom:14px;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(-45deg);border-radius:1px;
}
.check-list.warn li::before{
  width:13px;height:13px;border:0;background:transparent;transform:none;
  border-left:2px solid var(--danger);border-right:2px solid var(--danger);
  border-radius:2px;top:7px;
}
.compare-warn{background:#FCF6F2;border-color:rgba(163,59,42,.16)}

/* ============ FAQ ============ */
.faq-acc{max-width:900px;margin:0 auto}
.faq-acc .accordion{--bs-accordion-bg:transparent;--bs-accordion-border-width:0;--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:transparent;--bs-accordion-active-color:var(--brand)}
.faq-acc .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-acc .accordion-button{
  background:transparent;color:var(--ink);font-size:16px;font-weight:600;line-height:1.6;
  padding:22px 44px 22px 0;box-shadow:none;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand)}
.faq-acc .accordion-button::after{
  content:"+";background-image:none !important;width:auto;height:auto;
  font-size:26px;line-height:1;font-weight:400;color:var(--accent);
  margin-left:auto;align-self:center;transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand)}
.faq-acc .accordion-body{padding:0 44px 24px 0;color:var(--muted);font-size:15px;line-height:1.85}

/* ============ 底部 CTA ============ */
.cta-wrap{padding:0 0 72px}
.cta-band{
  background:#14181B;border-radius:18px;padding:64px 40px;text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(194,112,58,.35) 0%,rgba(194,112,58,0) 68%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.8vw,32px);line-height:1.32;position:relative;z-index:1}
.cta-band p{color:rgba(247,244,238,.72);font-size:16px;margin-top:16px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px;position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{background:#14181B;color:#C9C4BA;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-mark{
  width:42px;height:42px;border-radius:11px;background:var(--brand);color:#fff;
  font-family:var(--serif);font-weight:700;font-size:19px;display:grid;place-items:center;
}
.footer-brand-cn{font-size:15px;font-weight:600;color:#F3EFE7;line-height:1.3}
.footer-brand-sub{font-size:10px;letter-spacing:.18em;color:rgba(201,196,186,.6)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(201,196,186,.78);max-width:300px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;border:1px solid rgba(247,244,238,.16);
  display:grid;place-items:center;color:rgba(247,244,238,.78);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.footer-social a:hover{background:rgba(194,112,58,.18);color:#fff;border-color:rgba(194,112,58,.4)}
.footer-col h4{color:#F3EFE7;font-size:15px;font-weight:600;margin-bottom:18px;font-family:var(--sans)}
.footer-col li{margin-bottom:11px;font-size:14px}
.footer-col a{color:rgba(201,196,186,.82)}
.footer-col a:hover{color:var(--accent)}
.footer-col .plain{color:rgba(201,196,186,.72)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(247,244,238,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(201,196,186,.62);
}
.footer-bottom a{color:rgba(201,196,186,.72)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:flex;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:12px 14px;box-shadow:0 14px 34px rgba(20,24,27,.14);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
  max-width:340px;
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:none}
.sticky-text{font-size:13.5px;color:var(--muted);line-height:1.5;margin-right:4px}
.sticky-cta .btn{padding:10px 16px;font-size:14px;white-space:nowrap}
.sticky-close{
  width:30px;height:30px;border-radius:9px;border:1px solid var(--line);background:transparent;
  color:var(--muted);display:grid;place-items:center;cursor:pointer;flex:0 0 auto;
}
.sticky-close:hover{background:var(--sand);color:var(--ink)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .section{padding:76px 0}
  .cta-band{padding:56px 32px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-actions{margin-left:auto}
  .brand-mark{width:42px;height:42px;font-size:19px}
  .sort-row{flex-wrap:wrap}
  .compare-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .path-steps{grid-template-columns:1fr}
  .path-step{padding:0 0 26px 0}
  .path-step::after{right:auto;left:0;top:auto;bottom:0;width:100%;height:1px}
  .num-list{border-top:1px solid var(--line)}
}
@media (max-width:767.98px){
  body{font-size:16px;padding-bottom:76px}
  .section{padding:52px 0}
  .topbar-note{display:none}
  .topbar-inner{justify-content:flex-end}
  .cat-hero .container{padding-top:36px;padding-bottom:40px;min-height:260px}
  .cat-lead{font-size:15px}
  .section-head{margin-bottom:26px}
  .num-item{gap:14px;padding:20px 2px}
  .num-index{min-width:48px}
  .num-item:hover{padding-left:2px;padding-right:2px;background:transparent}
  .tip-card{padding:20px;border-radius:12px}
  .compare-col{padding:22px;border-radius:14px}
  .faq-acc .accordion-button{padding:18px 40px 18px 0;font-size:15.5px}
  .faq-acc .accordion-body{padding:0 40px 20px 0}
  .cta-band{padding:44px 22px;border-radius:16px}
  .cta-wrap{padding-bottom:52px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{margin-top:40px}
  .sticky-cta{
    left:0;right:0;bottom:0;max-width:none;border-radius:14px 14px 0 0;
    padding:10px 16px;height:64px;justify-content:space-between;
    border-left:0;border-right:0;border-bottom:0;
  }
  .sticky-text{display:none}
  .sticky-close{display:none}
  .sticky-cta .btn{flex:1 1 0}
}
@media (max-width:575.98px){
  .brand-cn{font-size:14px}
  .brand-sub{display:none}
  .btn-sm-nav{display:none}
  .cat-hero h1{font-size:28px}
  .section-head h2{font-size:23px}
  .btn-brand,.btn-ghost,.btn-inverse{padding:12px 20px;font-size:14.5px}
  .footer-social a{width:36px;height:36px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}