/* roulang page: index */
:root{
  --c-primary:#0E4B3C;
  --c-primary-900:#0B1512;
  --c-accent:#FF6A2B;
  --c-lime:#C6F24E;
  --c-bg:#F6F5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDEAE2;
  --t-1:#16211D;
  --t-2:#4C5A55;
  --t-3:#7C8A84;
  --line:#E1DED4;
  --ok:#2E9E6B;
  --warn:#E0A32E;
  --err:#D9452F;
  --r-lg:20px;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px rgba(11,21,18,.08);
  --shell-w:236px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-2);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:700;letter-spacing:.2px}
h1{font-size:clamp(30px,3.4vw,40px);line-height:1.25}
h2{font-size:clamp(23px,2.4vw,28px);line-height:1.35}
h3{font-size:20px;line-height:1.5}
p{margin:0}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
:focus{outline:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,106,43,.25)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.skip{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}

/* ---------- App Shell 导航 ---------- */
.shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell-w);
  background:var(--c-surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:80;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 6px 22px}
.brand-mark{
  flex:0 0 38px;width:38px;height:38px;border-radius:11px;
  background:var(--c-primary);color:#fff;
  display:grid;place-items:center;
  box-shadow:var(--sh-1);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{
  font-size:15.5px;font-weight:700;color:var(--t-1);
  line-height:1.25;letter-spacing:.2px;
}
.brand-sub{display:block;font-size:12.5px;font-weight:500;color:var(--t-3);letter-spacing:0}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:10px;
  color:var(--t-2);font-size:15px;line-height:1.4;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item .ico{flex:0 0 20px;width:20px;height:20px;stroke-width:1.8}
.nav-item:hover{background:rgba(14,75,60,.05);color:var(--c-primary)}
.nav-item.is-active{background:rgba(14,75,60,.06);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:-16px;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.shell-foot{margin-top:auto;padding:20px 8px 4px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.shell-foot a{font-size:14px;color:var(--t-3)}
.shell-foot a:hover{color:var(--c-accent)}
.shell-foot .copy{font-size:12.5px;color:var(--t-3);margin-top:8px;line-height:1.7}
.topbar{display:none}

/* ---------- 主内容区 ---------- */
.app-main{margin-left:var(--shell-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:13px 26px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,color .18s ease-out;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#F25A17;transform:translateY(-2px);box-shadow:var(--sh-2);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(14,75,60,.08);transform:translateY(-2px);color:var(--c-primary)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:9px 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary)}
.text-link svg{width:14px;height:14px;transition:transform .18s ease-out}
.text-link:hover{color:var(--c-accent)}
.text-link:hover svg{transform:translateX(2px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;font-style:normal;line-height:1.6;
  background:rgba(14,75,60,.08);color:var(--c-primary);
  white-space:nowrap;
}
.badge-accent{background:rgba(255,106,43,.12);color:#C64A12}

/* ---------- 区块基础 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--c-surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:3px;background:var(--c-primary);
}
.lead{font-size:16.5px;line-height:1.9;color:var(--t-2);max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:700;letter-spacing:1px;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-lime);border-radius:2px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:80px 0 72px;background:var(--c-bg)}
.hero::before{
  content:"";position:absolute;top:-60px;right:-80px;width:460px;height:460px;
  background-image:radial-gradient(rgba(14,75,60,.16) 1px,transparent 1px);
  background-size:17px 17px;opacity:.65;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:56px;align-items:center}
.hero h1{max-width:16em}
.hero-sub{margin-top:20px;font-size:16.5px;line-height:1.9;color:var(--t-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-figure{position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:rgba(14,75,60,.08);box-shadow:var(--sh-2)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{content:"";position:absolute;inset:0;background:rgba(14,75,60,.12)}
.mini-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:30px;border-top:1px solid var(--line);padding-top:22px}
.mini-stat{padding-right:18px;border-right:1px solid var(--line)}
.mini-stat:last-child{border-right:0;padding-left:18px;padding-right:0}
.mini-stat:nth-child(2){padding-left:18px}
.mini-stat b{display:block;font-size:22px;font-weight:800;color:var(--c-primary);line-height:1.3}
.mini-stat span{font-size:13.5px;color:var(--t-3)}

/* ---------- 痛点区 ---------- */
.pain-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.pain{display:grid;grid-template-columns:150px minmax(0,1fr);gap:32px;padding:34px 0;border-bottom:1px solid var(--line);align-items:start;transition:background .18s ease-out}
.pain:hover{background:rgba(14,75,60,.03)}
.pain-num{
  font-size:56px;line-height:1;font-weight:800;
  font-variant-numeric:tabular-nums;
  color:transparent;-webkit-text-stroke:1.6px var(--c-accent);
}
@supports not ((-webkit-text-stroke:1px #000)){
  .pain-num{color:rgba(255,106,43,.32)}
}
.pain h3{margin-bottom:8px}
.pain p{font-size:16px;color:var(--t-2);max-width:56em}

/* ---------- 图文交错 ---------- */
.zig{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;padding:46px 0;border-bottom:1px solid var(--line)}
.zig:first-of-type{border-top:1px solid var(--line)}
.zig-rev{grid-template-columns:7fr 5fr}
.zig-rev .zig-media{order:2}
.zig-rev .zig-body{order:1}
.zig-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:rgba(14,75,60,.08)}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.zig:hover .zig-media img{transform:scale(1.03)}
.zig-body h3{margin:14px 0 12px}
.zig-body p{font-size:16px;color:var(--t-2);margin-bottom:18px;max-width:34em}

/* ---------- 深色数据区 ---------- */
.band-dark{position:relative;overflow:hidden;background:var(--c-primary-900);padding:88px 0 96px;color:rgba(255,255,255,.78)}
.band-dark::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:46px;
  background:var(--c-bg);clip-path:polygon(0 100%,100% 0,100% 100%);
}
.band-dark h2{color:#fff}
.band-dark .lead{color:rgba(255,255,255,.72)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:52px}
.stat{padding:6px 26px;border-left:1px solid rgba(255,255,255,.10)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{display:block;font-size:clamp(28px,3vw,38px);font-weight:800;line-height:1.2;color:var(--c-lime);font-variant-numeric:tabular-nums}
.stat-label{display:block;margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.68);line-height:1.7}

/* ---------- 证言 ---------- */
.quotes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.quote{
  position:relative;background:var(--c-surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:34px 28px 28px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.quote::before{
  content:"";position:absolute;top:0;left:0;width:62px;height:62px;
  background:var(--c-surface-alt);
  clip-path:polygon(0 0,100% 0,0 100%);
  border-top-left-radius:var(--r-card);
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(14,75,60,.3)}
.quote-mark{position:relative;font-size:40px;line-height:1;color:var(--c-accent);font-weight:800}
.quote p{margin:14px 0 22px;font-size:16px;line-height:1.9;color:var(--t-2)}
.quote-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px}
.quote-avatar{flex:0 0 42px;width:42px;height:42px;border-radius:50%;overflow:hidden;background:rgba(14,75,60,.08)}
.quote-avatar img{width:100%;height:100%;object-fit:cover}
.quote-user b{display:block;font-size:15px;color:var(--t-1)}
.quote-user span{font-size:13.5px;color:var(--t-3)}

/* ---------- 内容卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(14,75,60,.3)}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:rgba(14,75,60,.08)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;gap:12px}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--t-3)}
.news-title{font-size:18px;line-height:1.5;color:var(--t-1);font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:inherit}
.news-card:hover .news-title a{color:var(--c-primary)}
.news-summary{font-size:15px;line-height:1.75;color:var(--t-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;text-align:center;
  background:var(--c-surface);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state svg{width:40px;height:40px;color:var(--t-3)}
.empty-state p{font-size:15.5px;color:var(--t-3)}

/* ---------- FAQ ---------- */
.faq{max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 2px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--t-1);line-height:1.6;
  transition:color .18s ease-out;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-primary)}
.faq .icon-plus{position:relative;flex:0 0 22px;width:22px;height:22px;transition:transform .2s ease-out}
.faq .icon-plus::before,.faq .icon-plus::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px}
.faq .icon-plus::before{left:0;right:0;top:10px;height:2px}
.faq .icon-plus::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .2s ease-out}
.faq details[open] .icon-plus{transform:rotate(45deg)}
.faq details[open] summary{color:var(--c-primary)}
.faq-answer{border-left:2px solid var(--c-primary);padding:0 0 24px 18px;margin-bottom:8px}
.faq-answer p{font-size:16px;line-height:1.9;color:var(--t-2)}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--c-primary-900);border-radius:var(--r-lg);padding:56px 56px 58px;color:rgba(255,255,255,.78)}
.cta::after{
  content:"";position:absolute;top:0;right:0;bottom:0;width:44%;
  background:linear-gradient(103deg,rgba(14,75,60,0) 0%,rgba(14,75,60,.55) 100%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta h2{color:#fff;max-width:20em}
.cta p{margin-top:12px;font-size:16px;color:rgba(255,255,255,.7);max-width:36em}
.cta-band{padding:0 0 88px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--c-primary);color:#fff}
.footer-brand b{color:#fff;font-size:16px;font-weight:700}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.4px}
.site-footer p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.7)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-contact li{list-style:none;font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.9}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom .dom{color:rgba(255,255,255,.45)}

/* ---------- 遮罩 ---------- */
.overlay{
  position:fixed;inset:0;background:rgba(11,21,18,.5);
  opacity:0;pointer-events:none;transition:opacity .2s ease-out;z-index:70;
}
.overlay.is-open{opacity:1;pointer-events:auto}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .hero-figure{order:-1}
  .zig,.zig-rev{grid-template-columns:minmax(0,1fr);gap:24px}
  .zig-rev .zig-media{order:0}
  .zig-rev .zig-body{order:0}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (min-width:768px) and (max-width:1023px){
  :root{--shell-w:84px}
  .shell{padding:20px 12px;align-items:center}
  .brand{justify-content:center;padding:4px 0 18px}
  .brand-text{display:none}
  .nav{width:100%;align-items:center}
  .nav-item{justify-content:center;padding:13px 0;width:100%}
  .nav-item .nav-label{display:none}
  .nav-item.is-active::before{left:-12px}
  .shell-foot{align-items:center;text-align:center;width:100%}
  .shell-foot a{font-size:12px}
  .shell-foot .copy{font-size:11.5px}
  .quotes{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--shell-w:0px}
  body{font-size:15.5px}
  .container{padding:0 20px}
  .topbar{
    display:flex;align-items:center;gap:12px;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 16px;
    background:var(--c-surface);border-bottom:1px solid var(--line);z-index:85;
  }
  .topbar-brand{flex:1 1 auto;font-size:15px;font-weight:700;color:var(--t-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .burger{
    flex:0 0 40px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:var(--c-surface);display:grid;place-items:center;gap:0;cursor:pointer;padding:9px;
  }
  .burger span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;margin:2px auto}
  .app-main{margin-left:0;padding-top:56px}
  .shell{
    transform:translateX(-104%);
    width:78%;max-width:320px;padding:22px 18px;
    transition:transform .24s ease-out;
    box-shadow:var(--sh-2);
  }
  .shell.is-open{transform:translateX(0)}
  .section{padding:56px 0}
  .hero{padding:44px 0 52px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:30px}
  .pain{grid-template-columns:76px minmax(0,1fr);gap:18px;padding:24px 0}
  .pain-num{font-size:38px}
  .mini-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .mini-stat{padding-right:10px}
  .mini-stat:nth-child(2){padding-left:10px}
  .mini-stat b{font-size:18px}
  .mini-stat span{font-size:12.5px}
  .quotes{grid-template-columns:minmax(0,1fr)}
  .news-grid{grid-template-columns:minmax(0,1fr)}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px}
  .stat{padding:6px 16px}
  .cta{padding:38px 26px 42px;border-radius:16px}
  .cta-band{padding:0 0 56px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;padding-bottom:36px}
  .site-footer{padding-top:52px}
  .faq summary{font-size:16px;padding:18px 2px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .hero h1{font-size:26px}
  .pain{grid-template-columns:minmax(0,1fr);gap:10px}
  .stats{grid-template-columns:minmax(0,1fr)}
  .stat{border-left:0;padding-left:0;padding-right:0}
  .stat:nth-child(3){border-left:0}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E4B3C;
  --c-primary-900:#0B1512;
  --c-accent:#FF6A2B;
  --c-lime:#C6F24E;
  --c-bg:#F6F5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDEAE2;
  --t-1:#16211D;
  --t-2:#4C5A55;
  --t-3:#7C8A84;
  --line:#E1DED4;
  --ok:#2E9E6B;
  --warn:#E0A32E;
  --err:#D9452F;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px rgba(11,21,18,.08);
  --side:236px;
  --t:180ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{color:var(--t-1);margin:0;line-height:1.35;font-weight:700}
h1{font-size:40px;line-height:1.25;letter-spacing:.2px}
h2{font-size:28px}
h3{font-size:20px;line-height:1.5}
h4{font-size:17px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;min-height:44px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:600;text-align:center;
  transition:transform var(--t) ease-out,background-color var(--t) ease-out,color var(--t) ease-out,box-shadow var(--t) ease-out,border-color var(--t) ease-out;
}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:#F15A18;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:rgba(14,75,60,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#fff;color:var(--c-primary-900)}
.btn-light:hover{background:#F1EFE8;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-sm{padding:9px 16px;font-size:14px;min-height:38px}

/* ---------- 左侧 App Shell ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--side);
  background:var(--c-surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:26px 16px 18px;z-index:60;
  transition:transform 220ms ease-out;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 8px 22px;border-bottom:1px solid var(--line)}
.brand-mark{
  display:inline-flex;width:34px;height:34px;flex:0 0 34px;align-items:center;justify-content:center;
  border-radius:10px;background:var(--c-primary);color:var(--c-lime);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:16px;font-weight:700;color:var(--t-1);letter-spacing:.2px}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:20px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-sm);color:var(--t-2);
  font-size:15px;font-weight:500;min-height:44px;
  transition:background-color var(--t) ease-out,color var(--t) ease-out;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;
  background:transparent;transition:background-color var(--t) ease-out;
}
.nav-item:hover{background:rgba(14,75,60,.05);color:var(--c-primary)}
.nav-item.is-active{background:rgba(14,75,60,.06);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{background:var(--c-primary)}
.nav-ico{display:inline-flex;width:20px;height:20px;flex:0 0 20px;color:currentColor}
.nav-ico svg{width:100%;height:100%}
.nav-txt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-foot{margin-top:auto;padding:18px 12px 0;border-top:1px solid var(--line)}
.side-foot a{display:block;font-size:14px;color:var(--t-2);padding:7px 0;min-height:38px;line-height:1.6}
.side-foot a:hover{color:var(--c-accent)}
.side-foot p{margin-top:10px;font-size:12.5px;color:var(--t-3);line-height:1.6}
.scrim{
  position:fixed;inset:0;background:rgba(11,21,18,.5);z-index:55;
  opacity:1;transition:opacity 200ms ease-out;
}
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:56px;z-index:70;
  align-items:center;gap:12px;padding:0 16px;background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(6px);
}
.topbar-brand{flex:1;text-align:center;font-size:15.5px;font-weight:700;color:var(--t-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.burger{width:44px;height:44px;display:inline-flex;flex-direction:column;justify-content:center;gap:5px;padding:0 10px;border-radius:var(--r-sm)}
.burger span{display:block;height:2px;background:var(--t-1);border-radius:2px}
.burger:hover span{background:var(--c-primary)}

/* ---------- 页面骨架 ---------- */
.page{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
main{flex:1;padding-bottom:8px}

/* ---------- 通用区块 ---------- */
.section{padding:64px 0}
.section-tight{padding:48px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.sec-title{display:flex;align-items:center;gap:12px;font-size:28px}
.sec-title::before{content:"";width:4px;height:24px;border-radius:2px;background:var(--c-primary);flex:0 0 4px}
.sec-sub{margin-top:10px;font-size:15px;color:var(--t-3);max-width:760px}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);margin-bottom:18px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--t-3)}
.breadcrumb a:hover{color:var(--c-accent)}

/* ---------- 分类首屏 ---------- */
.cat-hero{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(102deg,rgba(11,21,18,.94) 0%,rgba(14,75,60,.84) 62%,rgba(14,75,60,.7) 100%),
             url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;padding:56px 48px 52px;
}
.cat-hero::after{
  content:"";position:absolute;right:-80px;bottom:-140px;width:340px;height:340px;
  border:1px solid rgba(198,242,78,.34);border-radius:50%;
}
.cat-hero .breadcrumb,.cat-hero .breadcrumb a{color:rgba(255,255,255,.66)}
.cat-hero .breadcrumb li+li::before{color:rgba(255,255,255,.3)}
.cat-hero h1{color:#fff;max-width:760px}
.cat-hero .lead{margin-top:18px;max-width:720px;font-size:16.5px;color:rgba(255,255,255,.82);line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12)}
.hero-meta div{min-width:120px}
.hero-meta b{display:block;font-size:22px;color:var(--c-lime);font-weight:700;font-variant-numeric:tabular-nums}
.hero-meta span{display:block;font-size:13.5px;color:rgba(255,255,255,.6);margin-top:2px}

/* ---------- 筛选条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{
  display:inline-flex;align-items:center;gap:6px;min-height:40px;
  padding:8px 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--c-surface);color:var(--t-2);font-size:14.5px;
  transition:background-color var(--t) ease-out,color var(--t) ease-out,border-color var(--t) ease-out,transform var(--t) ease-out;
}
.chip:hover{border-color:rgba(14,75,60,.4);color:var(--c-primary);transform:translateY(-1px)}
.chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}

/* ---------- 卡片网格 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t) ease-out,box-shadow var(--t) ease-out,border-color var(--t) ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(14,75,60,.3)}
.card.is-hide{display:none}
.card-media{display:block;position:relative;aspect-ratio:16/9;background:rgba(14,75,60,.08);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  align-self:flex-start;display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(14,75,60,.08);color:var(--c-primary);
}
.badge-accent{background:rgba(255,106,43,.12);color:#C64B12}
.card-title{font-size:19px;line-height:1.5}
.card-title a{color:var(--t-1)}
.card-title a:hover{color:var(--c-accent)}
.card-desc{font-size:15px;line-height:1.75;color:var(--t-2);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;padding-top:14px;border-top:1px solid var(--line)}
.card-foot time{font-size:13.5px;color:var(--t-3)}
.textlink{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);transition:color var(--t) ease-out,transform var(--t) ease-out}
.textlink svg{width:14px;height:14px;transition:transform var(--t) ease-out}
.textlink:hover{color:var(--c-accent);transform:translateX(2px)}

/* ---------- 深色数据带 ---------- */
.band{background:var(--c-primary-900);color:#fff}
.band .container{padding-top:56px;padding-bottom:56px}
.band-head{margin-bottom:32px}
.band-head h2{color:#fff;font-size:26px}
.band-head p{color:rgba(255,255,255,.62);font-size:14.5px;margin-top:8px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:4px 28px;border-left:1px solid rgba(255,255,255,.12)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font-size:34px;font-weight:700;color:var(--c-lime);line-height:1.2;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.7}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:28px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:1px;background:var(--line)}
.timeline li{position:relative;display:grid;grid-template-columns:104px 1fr;gap:18px;padding-bottom:26px}
.timeline li:last-child{padding-bottom:0}
.timeline .dot{position:absolute;left:-28px;top:10px;width:11px;height:11px;border-radius:50%;background:var(--c-surface);border:2px solid var(--c-primary)}
.timeline time{font-size:14.5px;color:var(--t-3);font-weight:600;padding-top:3px}
.timeline h4{font-size:16.5px;margin-bottom:4px}
.timeline p{font-size:14.5px;color:var(--t-2);line-height:1.75}

/* ---------- 要点清单（两列） ---------- */
.point-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px;border-top:1px solid var(--line)}
.point-list li{padding:20px 0;border-bottom:1px solid var(--line)}
.point-list h4{display:flex;align-items:center;gap:10px;font-size:16px;margin-bottom:6px}
.point-list h4::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-lime);box-shadow:0 0 0 3px rgba(198,242,78,.28);flex:0 0 6px}
.point-list p{font-size:14.5px;color:var(--t-2);line-height:1.75}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(96deg,var(--c-primary-900) 0%,#123A30 100%);
  color:#fff;padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-90px;width:260px;height:260px;
  border:1px solid rgba(198,242,78,.3);border-radius:50%;
}
.cta-band h2{color:#fff;font-size:26px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:8px;max-width:640px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:56px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-footer p{font-size:14.5px;line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14.5px;transition:color var(--t) ease-out;min-height:24px}
.footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px}
.footer-contact li{font-size:14.5px;line-height:1.8;margin-bottom:8px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center;
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:13.5px;
}
.footer-bottom .dom{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:rgba(255,255,255,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .stats{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .stat:nth-child(odd){border-left:0;padding-left:0}
}
@media (max-width:1023px){
  :root{--side:84px}
  .sidebar{padding:22px 10px 16px;align-items:center}
  .side-brand{padding:0 0 20px;justify-content:center;width:100%}
  .brand-text{display:none}
  .side-nav{width:100%;gap:6px}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-txt{
    position:absolute;left:74px;top:50%;transform:translateY(-50%) translateX(-6px);
    background:var(--c-primary-900);color:#fff;font-size:13.5px;font-weight:500;
    padding:7px 12px;border-radius:8px;white-space:nowrap;opacity:0;pointer-events:none;
    transition:opacity var(--t) ease-out,transform var(--t) ease-out;z-index:80;
  }
  .nav-item:hover .nav-txt{opacity:1;transform:translateY(-50%) translateX(0)}
  .side-foot{display:none}
  .grid-2{grid-template-columns:1fr}
  .point-list{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--side:0px}
  body{font-size:16px}
  .topbar{display:flex}
  .sidebar{
    width:78%;max-width:320px;padding:70px 16px 20px;align-items:stretch;
    transform:translateX(-100%);box-shadow:var(--sh-2);
  }
  .sidebar.is-open{transform:translateX(0)}
  .side-brand{justify-content:flex-start;padding:0 8px 20px}
  .brand-text{display:block}
  .side-nav{margin-top:16px}
  .nav-item{justify-content:flex-start;padding:12px}
  .nav-txt{position:static;transform:none;opacity:1;background:none;color:inherit;padding:0;font-size:15px;pointer-events:auto}
  .side-foot{display:block}
  .page{margin-left:0;padding-top:56px}
  .container{padding:0 20px}
  h1{font-size:30px}
  h2,.sec-title,.band-head h2,.cta-band h2{font-size:23px}
  h3{font-size:18.5px}
  .section{padding:56px 0}
  .section-tight{padding:40px 0}
  .cat-hero{padding:36px 22px 38px;border-radius:var(--r-md)}
  .cat-hero .lead{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-meta{gap:20px;margin-top:26px}
  .hero-meta b{font-size:19px}
  .stats{grid-template-columns:1fr;gap:0}
  .stat{border-left:0;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
  .stat:last-child{border-bottom:0}
  .stat:first-child{padding-top:0}
  .timeline{padding-left:22px}
  .timeline li{grid-template-columns:1fr;gap:4px}
  .timeline time{padding-top:0}
  .timeline .dot{left:-22px;top:8px}
  .card-body{padding:18px 18px 20px}
  .cta-band{padding:32px 22px;border-radius:var(--r-md)}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  h1{font-size:26px}
  h2,.sec-title,.band-head h2,.cta-band h2{font-size:21px}
  body{font-size:15.5px}
  .cat-hero{padding:30px 18px 32px}
  .chip{padding:7px 14px;font-size:14px}
}

/* roulang page: article */
:root{
  --c-primary:#0E4B3C;
  --c-primary-900:#0B1512;
  --c-accent:#FF6A2B;
  --c-lime:#C6F24E;
  --c-bg:#F6F5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDEAE2;
  --t-1:#16211D;
  --t-2:#4C5A55;
  --t-3:#7C8A84;
  --line:#E1DED4;
  --line-dark:rgba(255,255,255,.10);
  --ok:#2E9E6B;
  --warn:#E0A32E;
  --err:#D9452F;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px rgba(11,21,18,.08);
  --r-lg:20px;
  --r:14px;
  --r-sm:10px;
  --r-pill:999px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --sidebar-w:236px;
  --topbar-h:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:var(--font);
  background:var(--c-bg);
  color:var(--t-2);
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:700;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 左侧 App Shell ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--c-primary-900);
  border-right:1px solid var(--line-dark);
  display:flex;
  flex-direction:column;
  z-index:60;
  transition:transform .24s ease-out;
  overflow-y:auto;
  overflow-x:visible;
}
.sidebar-head{padding:26px 22px 22px;display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(198,242,78,.12);
  border:1px solid rgba(198,242,78,.35);
  color:var(--c-lime);
}
.brand-mark svg{width:18px;height:18px;}
.sidebar-brand{display:flex;flex-direction:column;line-height:1.25;}
.sidebar-brand b{color:#fff;font-size:15px;font-weight:700;letter-spacing:.3px;}
.sidebar-brand small{color:rgba(255,255,255,.5);font-size:12px;letter-spacing:.5px;}
.nav-group{padding:8px 14px;display:flex;flex-direction:column;gap:4px;}
.nav-title{
  padding:12px 10px 6px;
  font-size:12px;
  letter-spacing:1.4px;
  color:rgba(255,255,255,.38);
  text-transform:uppercase;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:11px;
  padding:12px 12px;
  border-radius:var(--r-sm);
  font-size:15px;
  color:rgba(255,255,255,.72);
  transition:background-color .18s ease-out,color .18s ease-out,padding-left .18s ease-out;
}
.nav-item svg{width:19px;height:19px;flex:0 0 19px;stroke-width:1.7;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{
  background:rgba(255,255,255,.07);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--c-lime);
}
.nav-label{white-space:nowrap;}
.sidebar-foot{
  margin-top:auto;
  padding:18px 22px 24px;
  border-top:1px solid var(--line-dark);
  display:flex;flex-direction:column;gap:10px;
  font-size:13.5px;
}
.sidebar-foot a{color:rgba(255,255,255,.62);}
.sidebar-foot a:hover{color:var(--c-accent);}
.sidebar-foot .copy{color:rgba(255,255,255,.35);font-size:12px;line-height:1.7;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  background:var(--c-primary-900);
  align-items:center;justify-content:space-between;
  padding:0 16px;
  z-index:70;
  border-bottom:1px solid var(--line-dark);
}
.topbar-brand{color:#fff;font-size:15.5px;font-weight:700;letter-spacing:.3px;}
.burger{
  width:44px;height:44px;margin-left:-8px;
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  padding:0 10px;border-radius:var(--r-sm);
}
.burger span{display:block;height:2px;width:20px;background:#fff;border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.overlay{
  position:fixed;inset:0;background:rgba(11,21,18,.5);
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
  z-index:55;
}
.overlay.is-open{opacity:1;visibility:visible;}

/* ---------- 主区域 ---------- */
.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  padding-bottom:0;
}
.page-head{
  background:linear-gradient(180deg,#FFFFFF 0%,#F6F5F0 100%);
  border-bottom:1px solid var(--line);
  padding:38px 0 34px;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t-3);margin-bottom:18px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C4C0B5;}
.crumb a{color:var(--t-3);}
.crumb a:hover{color:var(--c-accent);}
.crumb .now{color:var(--t-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.cat-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:var(--r-pill);
  background:rgba(14,75,60,.08);color:var(--c-primary);
  font-size:13.5px;font-weight:600;letter-spacing:.2px;
}
.cat-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
h1.page-title{
  font-size:40px;line-height:1.25;margin:16px 0 0;max-width:900px;
  letter-spacing:.3px;
}
.page-meta{
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;
  margin-top:18px;font-size:13.5px;color:var(--t-3);
}
.page-meta .mv{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";color:var(--t-2);font-weight:600;}
.page-meta .sep{width:1px;height:12px;background:var(--line);}

/* ---------- 文章主体布局 ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  padding:52px 0 8px;
  align-items:start;
}
.article-hero{
  margin:0 0 34px;border-radius:12px;overflow:hidden;
  aspect-ratio:16/9;background:rgba(14,75,60,.08);
  border:1px solid var(--line);
  position:relative;
}
.article-hero img{width:100%;height:100%;object-fit:cover;}
.article-body{
  max-width:740px;
  font-size:16.5px;
  line-height:1.9;
  color:var(--t-2);
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:28px;line-height:1.35;
  margin:44px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;
  width:3px;height:1em;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:20px;line-height:1.5;margin:32px 0 12px;font-weight:700;color:var(--t-1);}
.article-body h4{font-size:17px;margin:24px 0 10px;}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(14,75,60,.28);}
.article-body a:hover{color:var(--c-accent);border-color:var(--c-accent);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);opacity:.55;
}
.article-body ol{counter-reset:od;padding-left:0;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:8px;counter-increment:od;}
.article-body ol li::before{
  content:counter(od);position:absolute;left:0;top:.1em;
  font-size:13.5px;font-weight:700;color:var(--c-primary);
  width:20px;height:20px;border-radius:6px;background:rgba(14,75,60,.08);
  display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--c-surface-alt);
  border-left:4px solid var(--c-accent);
  border-radius:0 12px 12px 0;
  color:var(--t-2);
}
.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 figcaption{font-size:13.5px;color:var(--t-3);text-align:center;margin-top:-8px;margin-bottom:22px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);}
.article-body th,.article-body td{padding:11px 14px;border:1px solid var(--line);text-align:left;}
.article-body thead th{background:var(--c-surface-alt);color:var(--t-1);font-weight:700;}
.article-body tbody tr:nth-child(even){background:#FAF9F5;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14.5px;background:var(--c-surface-alt);padding:2px 6px;border-radius:6px;color:var(--t-1);
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{
  max-width:740px;padding:48px 32px;text-align:center;
  background:var(--c-surface);border:1px dashed var(--line);border-radius:var(--r);
}
.empty-state .ico{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;
  display:grid;place-items:center;background:rgba(14,75,60,.08);color:var(--c-primary);
}
.empty-state .ico svg{width:24px;height:24px;}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{font-size:15px;color:var(--t-3);margin-bottom:20px;}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:24px;position:sticky;top:28px;}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:22px;
  box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:15.5px;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary);}
.toc-list{display:flex;flex-direction:column;}
.toc-list a{
  display:flex;justify-content:space-between;gap:10px;
  padding:10px 0;font-size:14.5px;color:var(--t-2);
  border-bottom:1px solid var(--line);
}
.toc-list a:last-child{border-bottom:none;}
.toc-list a:hover{color:var(--c-accent);}
.toc-list span{color:var(--t-3);font-size:12.5px;font-variant-numeric:tabular-nums;}
.reco{display:flex;flex-direction:column;gap:14px;}
.reco-item{display:flex;gap:12px;align-items:flex-start;}
.reco-thumb{
  width:74px;height:52px;flex:0 0 74px;border-radius:10px;overflow:hidden;
  background:rgba(14,75,60,.08);border:1px solid var(--line);
}
.reco-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
.reco-item:hover .reco-thumb img{transform:scale(1.03);}
.reco-item b{display:block;font-size:14.5px;color:var(--t-1);font-weight:600;line-height:1.55;margin-bottom:4px;}
.reco-item span{font-size:12.5px;color:var(--t-3);}
.reco-item:hover b{color:var(--c-primary);}
.side-actions{display:flex;flex-direction:column;gap:10px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .18s ease-out;}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:#F05C1C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-ghost:hover{background:rgba(14,75,60,.08);color:var(--c-primary);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:8px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--c-primary);
}
.link-arrow svg{width:14px;height:14px;transition:transform .18s ease-out;}
.link-arrow:hover{color:var(--c-accent);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 相关推荐 ---------- */
.section{padding:64px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;padding-bottom:16px;border-bottom:1px solid var(--line);
}
.section-head h2{font-size:28px;line-height:1.35;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.2em;width:3px;height:.9em;border-radius:2px;background:var(--c-primary);
}
.section-head p{font-size:14.5px;color:var(--t-3);margin-top:6px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(14,75,60,.3);}
.card-media{aspect-ratio:16/9;overflow:hidden;background:rgba(14,75,60,.08);position:relative;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.55;font-weight:700;}
.card-body p{font-size:14.5px;line-height:1.75;color:var(--t-2);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;padding-top:12px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--t-3);font-variant-numeric:tabular-nums;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-900);
  border-radius:var(--r-lg);
  padding:48px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(198,242,78,.22);
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--c-lime) 0%,rgba(198,242,78,0) 62%);
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:10px;position:relative;}
.cta-band p{color:rgba(255,255,255,.68);font-size:15px;max-width:520px;position:relative;}
.cta-band .cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.45);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.72);margin-top:88px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand b{color:#fff;font-size:16px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.3px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14.5px;width:fit-content;}
.footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:4px;}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.45);
}
.footer-bottom .dom{font-variant-numeric:tabular-nums;}

/* ---------- 平板 768-1023 ---------- */
@media (max-width:1023px){
  .sidebar{width:84px;overflow:visible;}
  .sidebar-head{justify-content:center;padding:22px 0;}
  .sidebar-brand{display:none;}
  .nav-title{display:none;}
  .nav-group{padding:8px 10px;align-items:center;}
  .nav-item{justify-content:center;padding:13px 0;width:64px;}
  .nav-item .nav-label{
    display:none;
  }
  .nav-item:hover .nav-label{
    display:block;position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--c-primary-900);color:#fff;padding:8px 14px;border-radius:8px;
    font-size:13.5px;white-space:nowrap;box-shadow:var(--sh-2);border:1px solid var(--line-dark);
    z-index:80;
  }
  .nav-item.is-active::before{left:-10px;}
  .sidebar-foot{padding:16px 0;align-items:center;}
  .sidebar-foot a,.sidebar-foot .copy{display:none;}
  .main{margin-left:84px;}
  .layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .side{position:static;}
  .side-inner{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  h1.page-title{font-size:32px;}
}

/* ---------- 移动 <768 ---------- */
@media (max-width:767px){
  .topbar{display:flex;}
  .sidebar{
    width:78%;max-width:320px;
    transform:translateX(-100%);
    padding-top:8px;
  }
  .sidebar.is-open{transform:translateX(0);}
  .sidebar-head{justify-content:flex-start;padding:22px 22px 18px;}
  .sidebar-brand{display:flex;}
  .nav-group{padding:8px 14px;align-items:stretch;}
  .nav-item{justify-content:flex-start;padding:13px 12px;width:auto;}
  .nav-item .nav-label{display:block;position:static;transform:none;background:none;border:none;padding:0;box-shadow:none;color:inherit;font-size:15px;}
  .nav-item.is-active::before{left:-14px;}
  .sidebar-foot{padding:16px 22px 26px;align-items:flex-start;}
  .sidebar-foot a,.sidebar-foot .copy{display:block;}
  .main{margin-left:0;padding-top:var(--topbar-h);}
  .container{padding:0 20px;}
  .page-head{padding:26px 0 24px;}
  h1.page-title{font-size:26px;line-height:1.3;}
  .layout{padding-top:32px;}
  .article-body{max-width:100%;font-size:16px;}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head h2{font-size:22px;}
  .grid-3{grid-template-columns:1fr;}
  .side-inner{grid-template-columns:1fr;}
  .cta-band{padding:34px 24px;border-radius:var(--r);}
  .cta-band h2{font-size:22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{margin-top:56px;padding-top:46px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  h1.page-title{font-size:23px;}
  .article-hero{aspect-ratio:4/3;}
  .btn{padding:0 18px;font-size:14.5px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --c-primary:#0E4B3C;
  --c-primary-900:#0B1512;
  --c-accent:#FF6A2B;
  --c-accent-h:#E85C1F;
  --c-lime:#C6F24E;
  --c-bg:#F6F5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDEAE2;
  --t-1:#16211D;
  --t-2:#4C5A55;
  --t-3:#7C8A84;
  --line:#E1DED4;
  --ok:#2E9E6B;
  --warn:#E0A32E;
  --err:#D9452F;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px rgba(11,21,18,.08);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --r-img:12px;
  --sidebar:236px;
  --trans:180ms ease-out;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--t-1);margin:0;line-height:1.35;font-weight:700}
h1{font-size:40px;line-height:1.25;letter-spacing:-.2px}
h2{font-size:28px}
h3{font-size:20px;line-height:1.5}
p{margin:0}
img{max-width:100%;display:block;background:rgba(14,75,60,.08)}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,106,43,.24)}

/* ============ 容器 ============ */
.container{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}

/* ============ 左侧 App Shell ============ */
.shell{
  position:fixed;top:0;bottom:0;left:0;
  width:var(--sidebar);
  background:var(--c-surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px;
  z-index:70;
  overflow-y:auto;
  transition:transform 200ms ease-out;
}
.shell-brand{display:flex;align-items:center;gap:10px;padding:6px 8px 22px}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:10px;
  background:var(--c-primary);color:var(--c-lime);
  display:grid;place-items:center;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-weight:700;color:var(--t-1);font-size:16px;line-height:1.3;letter-spacing:.2px}

.shell-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:11px 12px;border-radius:var(--r-sm);
  color:var(--t-2);font-size:15px;
  transition:background var(--trans),color var(--trans);
}
.nav-item svg{width:20px;height:20px;flex:none}
.nav-item:hover{background:rgba(14,75,60,.05);color:var(--c-primary)}
.nav-item.active{background:rgba(14,75,60,.06);color:var(--c-primary);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.shell-foot{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;
}
.nav-mini{
  font-size:13.5px;color:var(--t-3);padding:8px 12px;border-radius:8px;
  transition:color var(--trans),background var(--trans);
}
.nav-mini:hover{color:var(--c-primary);background:rgba(14,75,60,.05)}
.shell-copy{font-size:13px;color:var(--t-3);margin:10px 12px 0;line-height:1.6}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;gap:12px;
  padding:0 16px;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
  z-index:50;
}
.burger{
  width:44px;height:44px;flex:none;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:none;border:0;border-radius:var(--r-sm);cursor:pointer;
  transition:background var(--trans);
}
.burger:hover{background:rgba(14,75,60,.06)}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--t-1);margin:2.5px 0}
.topbar-brand{font-weight:700;color:var(--t-1);font-size:15px;margin-right:auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.overlay{
  position:fixed;inset:0;background:rgba(11,21,18,.5);
  opacity:0;visibility:hidden;transition:opacity 200ms ease-out;
  z-index:60;
}
.overlay.show{opacity:1;visibility:visible}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar);min-height:100vh}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;
  list-style:none;padding:0;margin:0 0 28px;
  font-size:13.5px;color:var(--t-3);
}
.breadcrumb a{color:var(--t-3);transition:color var(--trans)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb li:not(:last-child)::after{content:"/";margin:0 9px;color:#C9C5B8}
.breadcrumb li:last-child{color:var(--t-2)}

/* ============ 首屏 ============ */
.page-hero{padding:72px 0 68px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;
  border:1px solid rgba(14,75,60,.10);border-radius:50%;
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:40px;top:60px;width:260px;height:260px;
  border:1px dashed rgba(198,242,78,.5);border-radius:50%;
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;position:relative;z-index:1}
.hero-copy{grid-column:span 6}
.hero-media{grid-column:span 6;position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img)}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(14,75,60,.12)}
.hero-copy h1{margin:18px 0 16px}
.hero-lead{font-size:16.5px;color:var(--t-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tint{background:var(--c-surface-alt)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{padding-left:16px;position:relative;margin-bottom:14px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.sec-head p{font-size:16px;color:var(--t-2)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-head-row .sec-head{margin-bottom:0}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:rgba(14,75,60,.08);color:var(--c-primary);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-lime{background:rgba(198,242,78,.3);color:#3E5A0F}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background var(--trans),color var(--trans),box-shadow var(--trans),transform var(--trans),border-color var(--trans);
}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-h);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:rgba(14,75,60,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}

/* 文字链 */
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:15px;
  transition:color var(--trans),transform var(--trans);
}
.link-arrow:hover{color:var(--c-accent);transform:translateX(2px)}
.link-arrow svg{width:14px;height:14px;flex:none}

/* ============ 深色数据带 ============ */
.band-dark{
  background:linear-gradient(rgba(11,21,18,.94),rgba(11,21,18,.94)),url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  padding:56px 0;
  color:#fff;
}
.metrics{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:0 28px;border-left:1px solid rgba(255,255,255,.10)}
.metric:first-child{border-left:0;padding-left:0}
.metric b{
  display:block;font-size:34px;line-height:1.15;color:var(--c-lime);
  font-variant-numeric:tabular-nums;font-weight:700;margin-bottom:6px;
}
.metric span{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7;display:block}

/* ============ 功能参数卡 ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;
  transition:border-color var(--trans),box-shadow var(--trans),transform var(--trans);
}
.card:hover{border-color:rgba(14,75,60,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.spec-num{
  font-size:13px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:.14em;display:block;margin-bottom:14px;
}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:15px;color:var(--t-2);line-height:1.8}

/* ============ 图文交错 ============ */
.zig{display:flex;flex-direction:column}
.zig-row{
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);
}
.zig-row:first-child{border-top:0;padding-top:0}
.zig-row.rev{grid-template-columns:5fr 7fr}
.zig-row.rev .zig-media{order:-1}
.zig-media{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1)}
.zig-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);transition:transform 220ms ease-out}
.zig-media:hover img{transform:scale(1.03)}
.zig-text h3{margin:14px 0 12px;font-size:22px}
.zig-text p{font-size:15.5px;color:var(--t-2);margin-bottom:14px}
.zig-text .link-arrow{margin-top:4px}

/* ============ 步骤条 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:8px}
.step{position:relative;padding-top:34px}
.step::before{
  content:"";position:absolute;top:8px;left:0;right:0;height:2px;
  background:var(--c-lime);border-radius:2px;
}
.step::after{
  content:"";position:absolute;top:2px;left:0;width:14px;height:14px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-primary);
}
.step-num{
  display:block;font-size:32px;font-weight:700;color:var(--c-primary);
  line-height:1;font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--t-2);line-height:1.8}

/* ============ 两列要点列表 ============ */
.points{display:grid;grid-template-columns:repeat(2,1fr);gap:52px}
.points h3{font-size:19px;margin-bottom:8px;padding-bottom:14px;border-bottom:2px solid var(--c-primary);display:inline-block}
.points ul{list-style:none}
.points li{
  position:relative;padding:15px 0 15px 26px;
  border-bottom:1px solid var(--line);font-size:15px;color:var(--t-2);
  transition:background var(--trans);
}
.points li::before{
  content:"";position:absolute;left:0;top:24px;width:8px;height:8px;border-radius:2px;
  background:var(--c-lime);border:1px solid var(--c-primary);
}
.points li:hover{background:rgba(14,75,60,.03)}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:0 24px;
  transition:border-color var(--trans),box-shadow var(--trans);
}
.faq-item:hover{border-color:rgba(14,75,60,.24)}
.faq-item[open]{border-color:rgba(14,75,60,.3);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding:20px 0;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:16.5px;font-weight:600;flex:1;margin:0;color:var(--t-1)}
.faq-item summary::after{
  content:"+";flex:none;font-size:22px;font-weight:400;line-height:1;
  color:var(--c-primary);transition:transform 200ms ease-out;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{
  border-left:2px solid var(--c-primary);
  padding:2px 0 20px 16px;margin-bottom:20px;
}
.faq-body p{font-size:15px;color:var(--t-2);line-height:1.9}

/* ============ CTA 条 ============ */
.cta-wrap{padding:0 0 96px}
.cta-bar{
  position:relative;overflow:hidden;
  background:var(--c-primary-900);
  border-radius:var(--r-lg);
  padding:48px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-bar::before{
  content:"";position:absolute;top:-60%;left:-8%;width:52%;height:220%;
  background:rgba(255,255,255,.035);transform:rotate(-6deg);pointer-events:none;
}
.cta-bar::after{
  content:"";position:absolute;right:-40px;bottom:-90px;width:240px;height:240px;
  border:1px solid rgba(198,242,78,.28);border-radius:50%;pointer-events:none;
}
.cta-text{position:relative;z-index:1}
.cta-text h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta-text p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;max-width:640px}
.cta-bar .btn{position:relative;z-index:1;flex:none}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-900);color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;margin-bottom:14px;font-weight:700}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--c-lime)}
.site-footer p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.66)}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14.5px;transition:color var(--trans)}
.footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:3px}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 0;font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom .dom{font-variant-numeric:tabular-nums}

/* ============ 响应式：平板 ============ */
@media (max-width:1023px){
  :root{--sidebar:84px}
  .shell{width:var(--sidebar);padding:20px 12px;align-items:center}
  .shell-brand{padding:6px 0 20px}
  .brand-text{display:none}
  .shell-nav{width:100%}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-item span{display:none}
  .nav-item.active::before{left:-12px}
  .nav-mini,.shell-copy{display:none}
  .shell-foot{border-top:1px solid var(--line);width:100%;align-items:center}
  .nav-item:hover::after{
    content:attr(data-tip);
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--c-primary-900);color:#fff;
    padding:6px 12px;border-radius:8px;font-size:13px;white-space:nowrap;
    z-index:80;pointer-events:none;
  }
  .hero-copy,.hero-media{grid-column:span 12}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr);gap:0}
  .metric{padding:20px 24px;border-left:1px solid rgba(255,255,255,.10)}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .metric:nth-child(n+3){border-top:1px solid rgba(255,255,255,.10)}
  .zig-row,.zig-row.rev{grid-template-columns:1fr;gap:24px}
  .zig-row.rev .zig-media{order:0}
  .steps{grid-template-columns:repeat(2,1fr);gap:36px 28px}
  .points{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}

/* ============ 响应式：移动 ============ */
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .topbar{display:flex}
  .shell{
    width:78%;max-width:320px;
    transform:translateX(-100%);
    box-shadow:var(--sh-2);
    padding:20px 16px;
    align-items:stretch;
  }
  .shell.open{transform:translateX(0)}
  .shell-brand{padding:6px 8px 20px}
  .brand-text{display:block}
  .nav-item{justify-content:flex-start;padding:12px}
  .nav-item span{display:inline}
  .nav-item.active::before{left:-16px}
  .nav-item:hover::after{content:none}
  .shell-foot{width:auto;align-items:stretch}
  .nav-mini{display:block}
  .shell-copy{display:block}
  .main{margin-left:0;padding-top:56px}
  .page-hero{padding:40px 0 48px}
  .page-hero::before,.page-hero::after{display:none}
  h1{font-size:30px}
  h2{font-size:23px}
  .hero-copy h1{margin:14px 0 12px}
  .section{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2{padding-left:13px}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .grid-4{grid-template-columns:1fr}
  .metric{padding:18px 0;border-left:0!important}
  .metric:nth-child(n+2){border-top:1px solid rgba(255,255,255,.10)}
  .zig-row,.zig-row.rev{padding:36px 0}
  .zig-text h3{font-size:19px}
  .steps{grid-template-columns:1fr;gap:32px}
  .step::before{right:auto;width:100%}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 24px;gap:22px}
  .cta-text h2{font-size:21px}
  .cta-wrap{padding-bottom:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding:20px 0}
}

/* ============ 响应式：特小屏 ============ */
@media (max-width:480px){
  .container{padding:0 16px}
  h1{font-size:27px}
  .hero-actions .btn{width:100%}
  .cta-bar .btn{width:100%}
  .faq-item{padding:0 18px}
}

/* roulang page: category3 */
:root{
  --c-primary:#0E4B3C;
  --c-primary-900:#0B1512;
  --c-accent:#FF6A2B;
  --c-lime:#C6F24E;
  --c-bg:#F6F5F0;
  --c-surface:#FFFFFF;
  --c-surface-alt:#EDEAE2;
  --t-1:#16211D;
  --t-2:#4C5A55;
  --t-3:#7C8A84;
  --line:#E1DED4;
  --line-dark:rgba(255,255,255,.10);
  --ok:#2E9E6B;
  --warn:#E0A32E;
  --err:#D9452F;
  --r-lg:20px;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,21,18,.05);
  --sh-2:0 8px 24px rgba(11,21,18,.08);
  --shell-w:236px;
  --ease:cubic-bezier(.32,.72,.35,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
h1,h2,h3,h4{color:var(--t-1);margin:0;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 布局骨架 ---------- */
.layout{min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--shell-w);
  background:var(--c-surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  transition:transform .22s var(--ease);
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:32px;height:32px;flex:none;border-radius:9px;
  background:var(--c-primary);color:var(--c-lime);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:15.5px;font-weight:700;color:var(--t-1);letter-spacing:.2px}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:20px;flex:1}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;
  font-size:15px;color:var(--t-2);
  transition:background .18s var(--ease),color .18s var(--ease);
  min-height:44px;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:0;border-radius:0 3px 3px 0;
  background:var(--c-primary);transform:translateY(-50%);
  transition:height .18s var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-item:hover{background:rgba(14,75,60,.05);color:var(--c-primary)}
.nav-item.is-active{background:rgba(14,75,60,.06);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{height:22px}
.side-foot{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:13.5px;color:var(--t-3)}
.side-foot a{display:block;padding:6px 0;color:var(--t-2);transition:color .18s var(--ease)}
.side-foot a:hover{color:var(--c-accent)}
.side-foot p{margin-top:10px;font-size:13px;color:var(--t-3);line-height:1.7}

.main-wrap{margin-left:var(--shell-w);min-width:0}
.topbar{
  display:none;align-items:center;gap:12px;
  height:56px;padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
}
.burger{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 10px}
.burger span{display:block;height:2px;background:var(--t-1);border-radius:2px}
.topbar-brand{font-size:15.5px;font-weight:700;color:var(--t-1);flex:1;text-align:center}
.scrim{
  display:none;position:fixed;inset:0;background:rgba(11,21,18,.5);z-index:55;
}
body.nav-open .scrim{display:block}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#ef5a19;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:rgba(14,75,60,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:36px;padding:8px 16px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-size:15px;font-weight:600;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.link-more svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.link-more:hover{color:var(--c-accent);transform:translateX(2px)}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:rgba(14,75,60,.08);color:var(--c-primary);
}
.badge-accent{background:rgba(255,106,43,.12);color:#C24A12}
.eyebrow{
  display:inline-block;font-size:13.5px;font-weight:700;
  letter-spacing:.12em;color:var(--c-accent);text-transform:uppercase;margin-bottom:12px;
}
.section{padding:88px 0}
.section--alt{background:var(--c-surface-alt);padding:88px 0}
.section-head{margin-bottom:40px;max-width:760px}
.section-head h2{font-size:28px;position:relative;padding-left:16px;margin-bottom:14px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--c-primary);
}
.section-head p{font-size:15.5px;color:var(--t-2)}

.crumbs{margin-bottom:20px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t-3)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--t-3)}
.crumbs a{transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--c-accent)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--c-surface);
  border-bottom:1px solid var(--line);
  padding:64px 0 56px;
}
.hero-dots{
  position:absolute;top:-20px;right:-40px;width:360px;height:260px;
  background-image:radial-gradient(rgba(14,75,60,.16) 1.2px,transparent 1.2px);
  background-size:18px 18px;
  opacity:.55;pointer-events:none;
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 70% 30%,#000 0%,transparent 72%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;position:relative}
.hero h1{font-size:40px;line-height:1.25;letter-spacing:-.4px;margin:14px 0 18px;font-weight:800}
.hero .lede{font-size:16.5px;line-height:1.9;color:var(--t-2);max-width:640px}
.hero-media{margin-top:8px}
.hero-media .frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;background:rgba(14,75,60,.08);
  aspect-ratio:16/9;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media .frame::after{
  content:"";position:absolute;inset:0;background:rgba(14,75,60,.12);
}

.search-box{display:flex;gap:10px;margin-top:26px;max-width:540px}
.search-field{position:relative;flex:1;min-width:0}
.search-field svg{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;stroke:var(--t-3);fill:none;stroke-width:1.8;stroke-linecap:round;
}
.search-field input{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--c-surface);padding:0 14px 0 42px;font-size:15px;color:var(--t-1);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  -webkit-appearance:none;appearance:none;
}
.search-field input::placeholder{color:var(--t-3)}
.search-field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(14,75,60,.12)}
.search-box .btn{flex:none}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  border:1px solid var(--line);background:var(--c-surface);color:var(--t-2);
  border-radius:999px;padding:7px 15px;font-size:13.5px;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
  min-height:36px;
}
.tag:hover{border-color:rgba(14,75,60,.32);color:var(--c-primary)}
.tag.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 四步排查 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.steps::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:2px;
  background:linear-gradient(90deg,rgba(198,242,78,.9),rgba(198,242,78,.35));
  border-radius:2px;
}
.step{position:relative;padding-top:70px}
.step .num{
  position:absolute;top:0;left:0;
  width:54px;height:54px;border-radius:50%;
  background:var(--c-surface);border:1px solid var(--line);
  color:var(--c-primary);font-size:19px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:15px;color:var(--t-2)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.faq-group{margin-bottom:44px}
.faq-group:last-child{margin-bottom:0}
.faq-group h3{
  font-size:20px;margin-bottom:6px;display:flex;align-items:center;gap:10px;
}
.faq-group h3 span.dot{
  width:8px;height:8px;border-radius:50%;background:var(--c-lime);flex:none;
  box-shadow:0 0 0 3px rgba(198,242,78,.28);
}
.faq-group .group-note{font-size:14px;color:var(--t-3);margin-bottom:8px}
details.faq{border-bottom:1px solid var(--line)}
details.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:18px 0;font-size:17px;font-weight:600;color:var(--t-1);
  transition:color .18s var(--ease);
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:hover{color:var(--c-primary)}
.faq-icon{
  position:relative;width:24px;height:24px;flex:none;margin-top:4px;
  border:1px solid var(--line);border-radius:50%;
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--c-primary);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-icon::before{width:10px;height:1.6px}
.faq-icon::after{width:1.6px;height:10px}
details.faq[open] .faq-icon{transform:rotate(45deg);border-color:var(--c-primary);background:rgba(14,75,60,.06)}
.faq-body{
  border-left:2px solid var(--c-primary);
  margin:0 0 20px 0;padding:2px 0 2px 18px;
  font-size:15.5px;color:var(--t-2);
}
.faq-body p+p{margin-top:10px}

.faq-empty{
  display:none;text-align:center;padding:56px 24px;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--c-surface);
}
.faq-empty.is-show{display:block}
.faq-empty svg{width:38px;height:38px;stroke:var(--t-3);fill:none;stroke-width:1.6;margin:0 auto 14px;stroke-linecap:round;stroke-linejoin:round}
.faq-empty h3{font-size:18px;margin-bottom:8px}
.faq-empty p{font-size:15px;color:var(--t-3)}

.side-card{
  background:var(--c-surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.side-card+.side-card{margin-top:24px}
.side-card:hover{border-color:rgba(14,75,60,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.side-card .thumb{aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;margin-bottom:18px;background:rgba(14,75,60,.08)}
.side-card .thumb img{width:100%;height:100%;object-fit:cover}
.side-card h3{font-size:18px;margin-bottom:10px}
.side-card p{font-size:14.5px;color:var(--t-2)}
.side-card .btn{width:100%;margin-top:16px}
.side-list{list-style:none;margin-top:6px}
.side-list li{
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;
  display:flex;justify-content:space-between;gap:12px;
}
.side-list li:last-child{border-bottom:none}
.side-list b{color:var(--t-1);font-weight:600}
.side-list span{color:var(--t-3);font-variant-numeric:tabular-nums}

/* ---------- 深色提示 band ---------- */
.band-dark{background:var(--c-primary-900);color:rgba(255,255,255,.72);padding:88px 0}
.band-dark h2{color:#fff;font-size:28px;position:relative;padding-left:16px;margin-bottom:14px}
.band-dark h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--c-lime)}
.band-dark .band-lede{font-size:15.5px;max-width:720px;margin-bottom:40px}
.hint-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hint-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-dark);
  border-radius:var(--r-card);padding:24px;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.hint-card:hover{background:rgba(255,255,255,.07);border-color:rgba(198,242,78,.35);transform:translateY(-2px)}
.hint-card .code{
  display:inline-block;font-size:13px;color:var(--c-lime);
  border:1px solid rgba(198,242,78,.4);border-radius:999px;padding:3px 12px;margin-bottom:14px;
}
.hint-card h3{color:#fff;font-size:18px;margin-bottom:10px}
.hint-card p{font-size:15px;color:rgba(255,255,255,.72)}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--c-primary);color:#fff;padding:64px 0}
.cta-band::after{
  content:"";position:absolute;top:-40%;right:-60px;width:240px;height:190%;
  background:rgba(255,106,43,.14);transform:skewX(-8deg);pointer-events:none;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(198,242,78,.55),transparent);
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15.5px;max-width:640px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--c-lime)}
.footer-brand b{color:#fff;font-size:16px}
.site-footer p{font-size:14.5px;line-height:1.85}
.site-footer h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14.5px;color:rgba(255,255,255,.72);
  transition:color .18s var(--ease);
  border-bottom:1px solid transparent;padding-bottom:2px;width:fit-content;
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--c-accent)}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom .dom{font-variant-numeric:tabular-nums}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:36px}
  .faq-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
}
@media (max-width:1023px){
  :root{--shell-w:84px}
  .sidebar{padding:22px 12px;align-items:center}
  .brand{padding:0 0 18px;justify-content:center;width:100%}
  .brand-text{display:none}
  .nav{width:100%;align-items:center}
  .nav-item{justify-content:center;padding:12px 0;width:100%}
  .nav-item .label{display:none}
  .nav-item::after{
    content:attr(data-label);
    position:absolute;left:calc(100% + 14px);top:50%;
    transform:translateY(-50%) scale(.96);transform-origin:left center;
    background:var(--c-primary-900);color:#fff;font-size:13.5px;line-height:1.3;
    padding:7px 12px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .16s var(--ease),transform .16s var(--ease);
    z-index:70;
  }
  .nav-item:hover::after{opacity:1;transform:translateY(-50%) scale(1)}
  .side-foot{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .hint-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .steps::before{display:none}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .sidebar{
    transform:translateX(-100%);
    width:78%;max-width:320px;
    padding:24px 16px;align-items:stretch;
    box-shadow:var(--sh-2);
  }
  body.nav-open .sidebar{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  .sidebar .brand{justify-content:flex-start;padding:0 8px 20px}
  .brand-text{display:block}
  .nav-item{justify-content:flex-start;padding:11px 12px}
  .nav-item .label{display:inline}
  .nav-item::after{display:none}
  .side-foot{display:block}
  .main-wrap{margin-left:0}
  .topbar{display:flex}
  .hero{padding:40px 0 40px}
  .hero h1{font-size:28px;margin:12px 0 14px}
  .hero .lede{font-size:15.5px}
  .section,.section--alt,.band-dark{padding:56px 0}
  .section-head h2,.band-dark h2,.cta-inner h2{font-size:23px}
  .steps{grid-template-columns:1fr;row-gap:28px}
  .step{padding-top:64px}
  .hint-grid{grid-template-columns:1fr}
  details.faq summary{font-size:16px;gap:12px}
  .faq-body{font-size:15px;padding-left:14px}
  .search-box{flex-direction:column}
  .search-box .btn{width:100%}
  .cta-band{padding:48px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .hero h1{font-size:25px}
  .section-head h2,.band-dark h2,.cta-inner h2{font-size:21px}
  .side-card{padding:20px}
}