/* roulang page: index */
:root{
  --ink:#0C1A16;
  --brand:#123A2E;
  --brand-2:#1E5C47;
  --lime:#D8F45C;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E2DED2;
  --muted:#5C6B64;
  --warm:#C4552F;
  --r-sm:4px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:24px;
  --shadow-1:0 1px 2px rgba(12,26,22,.06);
  --shadow-2:0 12px 32px -12px rgba(12,26,22,.18);
  --sidebar-w:248px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
time,strong,.num,.mono{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:var(--r-sm);}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--brand);color:#E9F0EC;
  display:flex;flex-direction:column;
  padding:28px 0 24px;
  z-index:120;
  transition:transform .22s cubic-bezier(.2,.7,.2,1);
}
.sidebar-head{padding:0 20px 24px;}
.logo{display:inline-flex;align-items:baseline;gap:2px;font-weight:800;letter-spacing:-.01em;}
.logo b,.logo .logo-main{font-size:21px;color:#fff;font-weight:800;}
.logo span,.logo .logo-sub{font-size:13px;color:var(--lime);font-weight:700;letter-spacing:0;}
.logo-desc{margin-top:8px;font-size:11.5px;line-height:1.5;color:rgba(233,240,236,.6);letter-spacing:.02em;}
.side-nav{flex:1;display:flex;flex-direction:column;gap:2px;overflow-y:auto;padding:4px 0;}
.nav-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 20px;
  font-size:15px;font-weight:500;color:rgba(233,240,236,.82);
  transition:background .15s ease,color .15s ease;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--lime);border-radius:0 2px 2px 0;
  transition:height .18s ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item:hover::before{height:20px;background:rgba(216,244,92,.5);}
.nav-item.active{background:rgba(255,255,255,.06);color:#fff;font-weight:700;}
.nav-item.active::before{height:24px;background:var(--lime);}
.sidebar-foot{padding:20px 20px 0;border-top:1px solid rgba(255,255,255,.1);margin-top:12px;}
.sidebar-foot .btn{width:100%;justify-content:center;}
.ver{margin-top:10px;font-size:11.5px;color:rgba(233,240,236,.55);letter-spacing:.02em;}
.drawer-close{display:none;}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background .15s ease,color .15s ease,transform .15s ease,border-color .15s ease;
  white-space:nowrap;
}
.btn svg{transition:transform .15s ease;}
.btn:hover svg{transform:translateX(2px);}
.btn-primary{background:var(--brand);color:var(--paper);}
.btn-primary:hover{background:var(--brand-2);}
.btn-lime{background:var(--lime);color:var(--brand);font-weight:700;}
.btn-lime:hover{background:#CBEA4A;}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand);}
.btn-ghost:hover{background:var(--brand);color:var(--paper);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:8px;}
.link-underline{
  color:var(--brand-2);font-weight:600;font-size:15px;
  border-bottom:1px solid var(--brand-2);padding-bottom:1px;
  transition:background .15s ease,color .15s ease;
}
.link-underline:hover{background:var(--lime);color:var(--brand);border-bottom-color:var(--lime);}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;
  border-radius:var(--r-sm);background:rgba(18,58,46,.08);
  color:var(--brand-2);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--brand-2);
  text-transform:none;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--lime);}

/* ---------- 主区 ---------- */
.main{margin-left:var(--sidebar-w);min-height:100vh;}
.main-inner{max-width:1180px;margin:0 auto;padding:0 40px;}
.topbar{display:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;top:0;right:0;width:42%;height:100%;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.08;pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 45%);
  mask-image:linear-gradient(90deg,transparent,#000 45%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero h1{
  margin-top:18px;
  font-size:clamp(32px,3.5vw,50px);
  line-height:1.12;letter-spacing:-.02em;font-weight:800;
  max-width:15em;
}
.hero-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:26em;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px;}
.hero-meta{
  display:flex;flex-wrap:wrap;margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
}
.hero-meta li{
  padding:0 20px;border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;
}
.hero-meta li:first-child{padding-left:0;border-left:0;}
.hero-meta span{font-size:12px;color:var(--muted);letter-spacing:.02em;}
.hero-meta strong{font-size:14.5px;font-weight:700;color:var(--ink);}
.hero-cover{position:relative;}
.hero-cover img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--r-xl);border:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.hero-cover::after{
  content:"";position:absolute;left:24px;bottom:-1px;
  width:72px;height:4px;background:var(--lime);border-radius:2px;
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line);}
.section:last-of-type{border-bottom:0;}
.sec-head{margin-bottom:48px;max-width:44em;}
.sec-head h2{font-size:clamp(24px,2.3vw,32px);font-weight:800;margin-bottom:14px;}
.sec-head p{color:var(--muted);font-size:16px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;}
.sec-head-row .sec-head{margin-bottom:0;}

/* ---------- 价值块 ---------- */
.value-list{display:grid;grid-template-columns:1fr 1fr;gap:44px 64px;}
.value-item{display:flex;gap:24px;align-items:flex-start;}
.value-item:nth-child(even){margin-top:56px;}
.value-num{
  flex:0 0 auto;font-size:40px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px var(--brand-2);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.value-item h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.value-item p{font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ---------- 截图轮播 ---------- */
.shots-wrap{position:relative;}
.shots{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:8px;scrollbar-width:none;
}
.shots::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease;
}
.shot:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--shadow-2);}
.shot-img{aspect-ratio:3/4;overflow:hidden;}
.shot-img img{width:100%;height:100%;object-fit:cover;}
.shot figcaption{padding:18px 20px 22px;}
.shot figcaption strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px;}
.shot figcaption span{font-size:13.5px;color:var(--muted);}
.shots-nav{display:flex;align-items:center;gap:12px;margin-top:28px;}
.circle-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--card);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.circle-btn:hover{background:var(--brand);color:var(--paper);border-color:var(--brand);}
.shots-dots{display:flex;align-items:center;gap:8px;margin-left:8px;}
.shots-dots i{width:6px;height:6px;border-radius:50%;background:var(--line);transition:background .15s ease,width .15s ease;}
.shots-dots i.on{background:var(--brand-2);width:18px;border-radius:3px;}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
.spec-col h3{
  font-size:19px;font-weight:700;margin-bottom:8px;
  display:flex;align-items:center;gap:10px;
}
.spec-col h3::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:1px;}
.spec-list{margin-top:8px;}
.spec-list > div{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:48px;border-bottom:1px solid var(--line);
}
.spec-list dt{font-size:14.5px;color:var(--muted);}
.spec-list dd{margin:0;font-size:14.5px;font-weight:700;color:var(--ink);text-align:right;}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.review-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;display:flex;flex-direction:column;gap:14px;
  transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--shadow-2);}
.stars{display:flex;gap:3px;color:var(--lime);filter:drop-shadow(0 0 0 var(--brand));}
.stars svg{width:15px;height:15px;}
.review-card p{font-size:15px;line-height:1.8;color:var(--ink);}
.review-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px;}
.avatar{
  width:34px;height:34px;border-radius:50%;flex:0 0 auto;
  background:rgba(18,58,46,.08);color:var(--brand-2);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;border:1px solid var(--line);
}
.review-meta span{font-size:13px;color:var(--muted);}

/* ---------- 下载 CTA ---------- */
.download-card{
  position:relative;overflow:hidden;
  background:var(--brand);color:var(--paper);
  border-radius:var(--r-xl);
  padding:56px;
  display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center;
}
.download-card::before{
  content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.14;border-radius:50%;pointer-events:none;
}
.download-card h2{font-size:clamp(23px,2.2vw,30px);font-weight:800;margin-bottom:14px;position:relative;}
.download-card p{color:rgba(247,245,239,.76);font-size:15.5px;max-width:34em;position:relative;}
.download-card .bar{width:48px;height:4px;background:var(--lime);border-radius:2px;margin-bottom:22px;position:relative;}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;position:relative;}
.dl-actions .btn-ghost{color:var(--paper);border-color:rgba(247,245,239,.5);}
.dl-actions .btn-ghost:hover{background:var(--paper);color:var(--brand);border-color:var(--paper);}
.qr-box{display:flex;flex-direction:column;align-items:center;gap:10px;position:relative;}
.qr{
  position:relative;width:120px;height:120px;background:#fff;
  border:1px solid rgba(255,255,255,.4);border-radius:10px;padding:10px;
}
.qr::before{
  content:"";position:absolute;inset:10px;opacity:.85;
  background-image:
    repeating-linear-gradient(0deg,var(--brand) 0 3px,transparent 3px 7px),
    repeating-linear-gradient(90deg,var(--brand) 0 3px,transparent 3px 7px);
  background-size:7px 7px;
}
.qr::after{
  content:"";position:absolute;left:14px;top:14px;width:22px;height:22px;
  border:4px solid var(--brand);border-radius:2px;background:#fff;
}
.qr-box span{font-size:12px;color:rgba(247,245,239,.7);letter-spacing:.02em;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;}
.news-feature{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease;
}
.news-feature:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--shadow-2);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-feature-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-feature-body h3{
  font-size:20px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-feature-body p{
  font-size:14.5px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:8px;}
.news-meta time{font-size:13px;color:var(--muted);letter-spacing:.02em;}
.arrow{color:var(--brand-2);font-size:16px;transition:transform .15s ease;}
.news-feature:hover .arrow,.news-row:hover .arrow{transform:translateX(3px);}
.news-list{display:flex;flex-direction:column;gap:0;}
.news-row{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:padding-left .15s ease;
}
.news-row:first-child{padding-top:0;}
.news-row:hover{padding-left:6px;}
.news-row-main{display:flex;flex-direction:column;gap:8px;min-width:0;}
.news-row h4{
  font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-row .badge{align-self:flex-start;}
.news-empty{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--card);color:var(--muted);
}
.news-empty p{font-size:15px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.faq-layout h2{font-size:clamp(24px,2.3vw,32px);font-weight:800;margin-bottom:16px;}
.faq-layout .lead{color:var(--muted);font-size:16px;max-width:22em;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:20px 0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .15s ease;
}
.faq-q:hover{color:var(--brand-2);}
.faq-icon{position:relative;flex:0 0 auto;width:14px;height:14px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-2);border-radius:1px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:6px;width:14px;height:2px;}
.faq-icon::after{left:6px;top:0;width:2px;height:14px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a p{padding:0 0 22px;font-size:15.5px;color:var(--muted);max-width:62ch;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand);color:rgba(247,245,239,.72);padding:72px 0 32px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;}
.footer-brand .logo b,.footer-brand .logo .logo-main{color:#fff;}
.footer-brand .logo span,.footer-brand .logo .logo-sub{color:var(--lime);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:26em;color:rgba(247,245,239,.62);}
.f-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.f-col li{margin-bottom:10px;}
.f-col a{font-size:14px;color:rgba(247,245,239,.72);transition:color .15s ease;}
.f-col a:hover{color:var(--lime);}
.f-col p{font-size:14px;margin-bottom:8px;}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 32px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(247,245,239,.5);letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .hero-grid{gap:40px;}
  .download-card{padding:44px;gap:32px;}
}
@media (max-width:1024px){
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 18px;
    background:var(--brand);color:#fff;z-index:130;
  }
  .topbar .logo b,.topbar .logo .logo-main{font-size:18px;}
  .topbar .logo span,.topbar .logo .logo-sub{font-size:11.5px;}
  .burger{display:flex;flex-direction:column;justify-content:center;gap:4px;width:40px;height:40px;align-items:flex-end;}
  .burger span{display:block;height:2px;width:20px;background:var(--lime);border-radius:1px;transition:width .18s ease;}
  .burger span:nth-child(2){width:14px;}
  .sidebar{width:280px;transform:translateX(-100%);padding-top:24px;box-shadow:0 0 40px rgba(12,26,22,.3);}
  .sidebar.open{transform:none;}
  .drawer-close{
    display:flex;position:absolute;top:14px;right:14px;width:36px;height:36px;
    align-items:center;justify-content:center;color:rgba(233,240,236,.75);font-size:22px;line-height:1;
  }
  .drawer-mask{
    position:fixed;inset:0;background:rgba(12,26,22,.5);z-index:110;
    opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
  }
  .drawer-mask.show{opacity:1;visibility:visible;}
  .main{margin-left:0;padding-top:56px;}
  .main-inner{padding:0 28px;}
  .section{padding:72px 0;}
  .hero{padding:56px 0 52px;}
  .hero::before{width:60%;}
  .review-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .news-grid{grid-template-columns:1fr;}
}
@media (max-width:768px){
  .main-inner{padding:0 20px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-cover{order:2;}
  .hero-cover img{aspect-ratio:16/11;}
  .hero h1{max-width:none;}
  .hero-meta{display:grid;grid-template-columns:1fr 1fr;gap:16px 0;}
  .hero-meta li{padding:0 16px;}
  .hero-meta li:nth-child(odd){padding-left:0;border-left:0;}
  .value-list{grid-template-columns:1fr;gap:32px;}
  .value-item:nth-child(even){margin-top:0;}
  .shot{flex:0 0 78%;}
  .spec-grid{grid-template-columns:1fr;gap:40px;}
  .review-grid{grid-template-columns:1fr;}
  .download-card{grid-template-columns:1fr;padding:36px 28px;}
  .qr-box{align-items:flex-start;}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;justify-content:center;}
  .link-underline{width:100%;text-align:left;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .hero{padding:40px 0 44px;}
  .hero-sub{font-size:15.5px;}
  .hero-meta{grid-template-columns:1fr;}
  .hero-meta li{padding-left:0;border-left:0;border-top:1px solid var(--line);padding-top:12px;}
  .hero-meta li:first-child{border-top:0;padding-top:0;}
  .value-num{font-size:32px;}
  .news-feature-body{padding:20px;}
  .review-card{padding:20px;}
  .shot{flex:0 0 88%;}
  .download-card{padding:28px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1 !important;transform:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#0C1A16;
  --brand:#123A2E;
  --brand-2:#1E5C47;
  --lime:#D8F45C;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E2DED2;
  --muted:#5C6B64;
  --accent-warm:#C4552F;
  --r-tag:4px;
  --r-btn:10px;
  --r-card:16px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(12,26,22,.06);
  --sh-2:0 12px 32px -12px rgba(12,26,22,.18);
  --sidebar-w:248px;
  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:72px;
  --sp-8:96px;
  --font: "PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 布局骨架 ---------- */
.shell{min-height:100vh}
.sidebar{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--brand);
  color:#F2F4EF;
  display:flex;
  flex-direction:column;
  padding:26px 0 22px;
  z-index:60;
  transition:transform .22s cubic-bezier(.2,.7,.2,1);
}
.sidebar .logo{
  display:flex;
  align-items:baseline;
  gap:4px;
  padding:0 20px 6px;
  font-size:21px;
  font-weight:800;
  letter-spacing:-.01em;
  color:#FFFFFF;
}
.sidebar .logo b{font-weight:800}
.sidebar .logo span{font-size:15px;font-weight:600;color:var(--lime)}
.sidebar .brand-note{
  padding:0 20px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.02em;
  color:rgba(242,244,239,.6);
}
.side-nav{display:flex;flex-direction:column;gap:2px;margin-top:26px}
.nav-item{
  position:relative;
  display:block;
  padding:0 20px;
  line-height:44px;
  font-size:15px;
  font-weight:500;
  color:rgba(247,245,239,.72);
  transition:background .15s ease,color .15s ease;
}
.nav-item::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:0 2px 2px 0;
  background:transparent;
  transition:background .15s ease;
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-item:hover::before{background:rgba(216,244,92,.5)}
.nav-item.active{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active::before{background:var(--lime)}
.nav-item:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.side-foot{margin-top:auto;padding:24px 20px 0}
.side-foot .btn{width:100%;justify-content:center;margin-bottom:10px}
.side-foot .ver{
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(242,244,239,.55);
  font-variant-numeric:tabular-nums;
}

.main{margin-left:var(--sidebar-w)}
.main-inner{max-width:1180px;margin:0 auto;padding:0 40px}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:70;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:var(--brand);
  color:#fff;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar .logo{display:flex;align-items:baseline;gap:3px;font-size:18px;font-weight:800;color:#fff}
.topbar .logo span{font-size:13px;color:var(--lime);font-weight:600}
.burger{
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.18);
}
.burger i{display:block;position:relative;width:18px;height:2px;background:#fff;border-radius:2px}
.burger i::before,.burger i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.burger i::before{top:-6px}
.burger i::after{top:6px}
.scrim{
  display:none;
  position:fixed;inset:0;
  background:rgba(12,26,22,.5);
  z-index:55;
  opacity:0;
  transition:opacity .2s ease;
}
.scrim.show{opacity:1}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:background .15s ease,color .15s ease,border-color .15s ease,transform .12s ease;
  white-space:nowrap;
}
.btn svg{transition:transform .15s ease}
.btn:hover svg{transform:translateX(2px)}
.btn-primary{background:var(--brand);color:#F7F5EF;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-2);border-color:var(--brand-2)}
.btn-lime{background:var(--lime);color:var(--brand);border-color:var(--lime);font-weight:700}
.btn-lime:hover{filter:brightness(.94)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand);color:#F7F5EF}
.btn-outline-light{background:transparent;color:#F7F5EF;border-color:rgba(247,245,239,.45)}
.btn-outline-light:hover{background:rgba(247,245,239,.12);border-color:#F7F5EF}
.link-underline{
  color:var(--brand-2);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.link-underline:hover{background:var(--lime);color:var(--brand)}
.badge{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 8px;
  border-radius:var(--r-tag);
  background:rgba(18,58,46,.08);
  color:var(--brand-2);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-warm{background:rgba(196,85,47,.1);color:var(--accent-warm)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--muted);
  font-weight:600;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  border-radius:1px;
  background:var(--lime);
  box-shadow:0 0 0 1px rgba(18,58,46,.25);
}
.section{padding:var(--sp-8) 0}
.section-head{margin-bottom:var(--sp-5)}
.section-head h2{
  font-size:32px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  margin-top:10px;
}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--muted);
  max-width:68ch;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:28px 0 0;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.breadcrumb [aria-current]{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{position:relative;padding:44px 0 56px;overflow:hidden}
.page-hero::before{
  content:"";
  position:absolute;
  right:-6%;top:-30%;
  width:46%;
  height:150%;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.08;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.page-hero h1{
  font-size:clamp(32px,4.2vw,44px);
  line-height:1.14;
  font-weight:800;
  letter-spacing:-.02em;
  margin-top:16px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--brand);
  background:linear-gradient(transparent 62%,rgba(216,244,92,.75) 62%);
}
.lede{
  margin-top:18px;
  font-size:16px;
  color:var(--muted);
  max-width:34ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.meta-strip{
  display:flex;
  flex-wrap:wrap;
  margin-top:32px;
  border-top:1px solid var(--line);
  padding-top:16px;
}
.meta-strip div{
  padding:0 20px;
  border-left:1px solid var(--line);
  font-size:13px;
  letter-spacing:.02em;
  color:var(--muted);
  line-height:1.6;
}
.meta-strip div:first-child{padding-left:0;border-left:0}
.meta-strip strong{
  display:block;
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;
  aspect-ratio:4/5;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.hero-figure::after{
  content:"";
  position:absolute;
  left:24px;bottom:-12px;
  width:96px;height:4px;
  background:var(--lime);
  border-radius:2px;
}

/* ---------- 时间轴 ---------- */
.steps-wrap{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:56px;
  align-items:start;
}
.timeline{position:relative}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:24px;
  padding-bottom:34px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:24px;top:48px;bottom:6px;
  width:1px;
  background:var(--line);
}
.tl-item:last-child::before{display:none}
.tl-num{
  position:relative;
  z-index:1;
  width:48px;height:48px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--brand);
  font-size:16px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);
}
.tl-body{padding-top:4px}
.tl-body h3{font-size:19px;font-weight:700;line-height:1.4}
.tl-body p{margin-top:8px;font-size:15px;color:var(--muted);max-width:62ch}
.tl-body .badge{margin-bottom:8px}

.aside-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:transform .12s ease,border-color .12s ease,box-shadow .12s ease;
}
.aside-card:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--sh-2)}
.aside-card h3{font-size:17px;font-weight:700}
.aside-card p{font-size:14px;color:var(--muted);margin-top:8px}
.aside-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.aside-list li{font-size:14px;color:var(--muted);display:flex;gap:10px;line-height:1.7}
.aside-list li::before{
  content:"";
  flex:none;
  width:6px;height:6px;
  margin-top:9px;
  border-radius:1px;
  background:var(--brand-2);
}
.sticky{position:sticky;top:32px}

/* ---------- 系统要求 + 安装包信息 ---------- */
.req-grid{
  display:grid;
  grid-template-columns:1.65fr 1fr;
  gap:32px;
  align-items:start;
}
.spec-box{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:8px 28px 20px;
  box-shadow:var(--sh-1);
}
.spec-row{
  display:grid;
  grid-template-columns:150px 1fr 1fr;
  gap:16px;
  align-items:center;
  min-height:48px;
  padding:10px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  font-variant-numeric:tabular-nums;
}
.spec-row:first-child{border-top:0}
.spec-head{
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
  font-weight:600;
}
.spec-row span:first-child{color:var(--muted)}
.spec-row strong{font-weight:600;color:var(--ink)}
.pkg-card{
  background:var(--brand);
  color:#F2F4EF;
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-2);
}
.pkg-card h3{font-size:17px;font-weight:700;color:#fff}
.pkg-card .pkg-sub{font-size:13px;color:rgba(242,244,239,.65);margin-top:6px}
.pkg-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 0;
  border-bottom:1px solid rgba(247,245,239,.14);
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.pkg-row span{color:rgba(242,244,239,.7)}
.pkg-row strong{font-weight:700;color:var(--lime);letter-spacing:.01em}
.pkg-card .btn{margin-top:20px;width:100%;justify-content:center}

/* ---------- 下载大卡 ---------- */
.dl-card{
  position:relative;
  overflow:hidden;
  background:var(--brand);
  color:#F7F5EF;
  border-radius:var(--r-xl);
  padding:56px;
  display:grid;
  grid-template-columns:1fr 168px;
  gap:48px;
  align-items:center;
}
.dl-card::before{
  content:"";
  position:absolute;
  left:56px;top:0;
  width:48px;height:4px;
  background:var(--lime);
}
.dl-card h2{
  font-size:30px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
}
.dl-card p{margin-top:14px;font-size:15px;color:rgba(247,245,239,.78);max-width:52ch}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.qr{
  width:144px;height:144px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:8px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--brand);
  text-align:center;
}
.qr img{width:100%;height:100%;border-radius:8px}
.qr-note{font-size:12px;color:rgba(247,245,239,.7);text-align:center;margin-top:10px;letter-spacing:.02em}

/* ---------- FAQ ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:56px;
  align-items:start;
}
.faq-title h2{font-size:30px;font-weight:700;line-height:1.25;letter-spacing:-.01em;margin-top:10px}
.faq-title p{margin-top:14px;font-size:15px;color:var(--muted);max-width:32ch}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:16px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color .15s ease;
}
.faq-q:hover{color:var(--brand-2)}
.faq-ico{position:relative;flex:none;width:18px;height:18px}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-ico::before{left:0;top:8px;width:18px;height:1.5px}
.faq-ico::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.open .faq-ico::after{transform:scaleY(0);opacity:0}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .2s ease;
}
.faq-a>div{overflow:hidden}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a p{
  padding:0 4px 20px;
  font-size:15px;
  color:var(--muted);
  max-width:70ch;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand);
  color:rgba(247,245,239,.78);
  padding:64px 0 28px;
  margin-top:var(--sp-8);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{
  display:inline-flex;
  align-items:baseline;
  gap:4px;
  font-size:20px;
  font-weight:800;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand .logo span{font-size:14px;color:var(--lime);font-weight:600}
.footer-brand p{font-size:14px;line-height:1.8;max-width:36ch;color:rgba(247,245,239,.65)}
.f-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.f-col ul{display:flex;flex-direction:column;gap:10px}
.f-col li a,.f-col p{font-size:14px;color:rgba(247,245,239,.7)}
.f-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid rgba(247,245,239,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(247,245,239,.55);
  letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out}
.js .reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .main-inner{padding:0 32px}
  .hero-grid{gap:36px}
  .steps-wrap{grid-template-columns:1fr 280px;gap:36px}
}
@media (max-width:1024px){
  .sidebar{width:280px;transform:translateX(-100%);box-shadow:var(--sh-2)}
  .sidebar.is-open{transform:translateX(0)}
  .topbar{display:flex}
  .main{margin-left:0}
  .scrim{display:block;pointer-events:none}
  .scrim.show{pointer-events:auto}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure img{aspect-ratio:16/10}
  .hero-figure{order:2}
  .steps-wrap{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .sticky{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
}
@media (max-width:768px){
  .main-inner{padding:0 20px}
  .page-hero{padding:28px 0 40px}
  .meta-strip div{padding:0 14px}
  .meta-strip div:nth-child(3){padding-left:0;border-left:0}
  .dl-card{grid-template-columns:1fr;padding:36px 28px;gap:32px}
  .dl-card::before{left:28px}
  .dl-card h2{font-size:24px}
  .qr{width:132px;height:132px}
  .section-head h2{font-size:24px}
  .faq-title h2{font-size:24px}
  .spec-box{padding:4px 20px 16px}
  .spec-row{grid-template-columns:110px 1fr 1fr;gap:10px;font-size:14px}
  .tl-item{grid-template-columns:52px 1fr;gap:16px}
  .tl-num{width:40px;height:40px;font-size:14px}
  .tl-item::before{left:20px;top:40px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .meta-strip{flex-direction:column;gap:12px;border-top:1px solid var(--line)}
  .meta-strip div{padding:0;border-left:0}
  .hero-actions .btn{width:100%;justify-content:center}
  .dl-actions .btn{width:100%;justify-content:center}
  .spec-row{grid-template-columns:1fr 1fr;row-gap:2px}
  .spec-row span:first-child{grid-column:1/-1;font-size:13px}
  .spec-head{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0C1A16;
  --brand:#123A2E;
  --brand-2:#1E5C47;
  --lime:#D8F45C;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E2DED2;
  --muted:#5C6B64;
  --accent-warm:#C4552F;
  --r-tag:4px;
  --r-btn:10px;
  --r-card:16px;
  --r-block:24px;
  --sh-1:0 1px 2px rgba(12,26,22,.06);
  --sh-2:0 12px 32px -12px rgba(12,26,22,.18);
  --sidebar:248px;
  --gap-1:8px;
  --gap-2:12px;
  --gap-3:16px;
  --gap-4:24px;
  --gap-5:32px;
  --gap-6:48px;
  --gap-7:72px;
  --gap-8:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:var(--brand-2);}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--ink);}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}

/* ---------- 侧边导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:var(--brand);
  display:flex;
  flex-direction:column;
  padding:28px 16px 24px;
  z-index:70;
  overflow-y:auto;
  border-right:1px solid rgba(255,255,255,.06);
}
.side-brand{display:block;text-decoration:none;padding:0 8px 4px;}
.logo{
  display:inline-flex;
  align-items:baseline;
  gap:2px;
  text-decoration:none;
  font-weight:800;
  font-size:22px;
  letter-spacing:-.01em;
  color:#fff;
}
.logo b{font-weight:800;}
.logo span{font-size:13px;font-weight:600;color:var(--lime);letter-spacing:.02em;}
.brand-sub{
  margin:10px 0 0;
  font-size:12px;
  line-height:1.6;
  color:rgba(255,255,255,.55);
  letter-spacing:.02em;
}
.nav-grid-line{
  height:1px;
  background:rgba(255,255,255,.12);
  margin:20px 8px 16px;
}
.side-nav .nav-item{
  position:relative;
  display:flex;
  align-items:center;
  height:44px;
  padding:0 18px;
  margin-bottom:4px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.76);
  text-decoration:none;
  transition:background .14s ease,color .14s ease;
}
.side-nav .nav-item::before{
  content:"";
  position:absolute;
  left:4px;top:12px;bottom:12px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background .14s ease;
}
.side-nav .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.side-nav .nav-item:hover::before{background:rgba(216,244,92,.5);}
.side-nav .nav-item.active{background:rgba(255,255,255,.06);color:#fff;}
.side-nav .nav-item.active::before{background:var(--lime);}
.side-nav .nav-item:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.side-foot{margin-top:auto;padding:20px 8px 0;border-top:1px solid rgba(255,255,255,.12);}
.dl-btn{
  display:flex;align-items:center;justify-content:center;
  height:44px;border-radius:var(--r-btn);
  background:var(--lime);color:var(--brand);
  font-size:14px;font-weight:700;text-decoration:none;
  transition:filter .16s ease,transform .16s ease;
}
.dl-btn:hover{filter:brightness(.94);}
.side-version{
  margin:12px 0 0;font-size:12px;color:rgba(255,255,255,.5);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;
  height:56px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  z-index:60;
}
.topbar .logo{font-size:19px;color:var(--ink);}
.topbar .logo b{color:var(--ink);}
.topbar .logo span{color:var(--brand-2);}
.hamburger{
  width:40px;height:40px;border:1px solid var(--line);border-radius:8px;
  background:var(--card);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;cursor:pointer;
  transition:border-color .14s ease,background .14s ease;
}
.hamburger:hover{border-color:var(--brand-2);}
.hamburger span{display:block;width:16px;height:2px;background:var(--brand);border-radius:1px;}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(12,26,22,.5);
  opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
  z-index:65;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ---------- 主区域 ---------- */
.main{
  margin-left:var(--sidebar);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.main-inner{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 32px;
}
.main-body{padding:36px 0 0;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
  padding:4px 0 22px;
  overflow:hidden;
  white-space:nowrap;
}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color .14s ease;}
.breadcrumb a:hover{color:var(--brand-2);text-decoration:underline;}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .crumb-cat{color:var(--brand-2);}
.breadcrumb .crumb-now{
  max-width:380px;
  overflow:hidden;
  text-overflow:ellipsis;
  color:var(--ink);
}

/* ---------- 文章头部 ---------- */
.article-head{padding-bottom:28px;}
.badge{
  display:inline-flex;align-items:center;height:22px;
  padding:0 10px;border-radius:var(--r-tag);
  background:rgba(18,58,46,.08);
  color:var(--brand-2);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.article-head h1{
  margin:16px 0 0;
  font-size:44px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
  max-width:900px;
}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  margin-top:20px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.meta-row .meta-divider{width:1px;height:12px;background:var(--line);}
.article-cover{
  margin:0 0 40px;
  border-radius:var(--r-block);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.article-cover img{
  width:100%;
  aspect-ratio:16/7;
  object-fit:cover;
}

/* ---------- 文章布局 ---------- */
.article-wrap{
  display:grid;
  grid-template-columns:minmax(0,720px) 260px;
  gap:56px;
  align-items:start;
}
.article-main{min-width:0;}
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
  max-width:72ch;
}
.article-body h2{
  font-size:22px;
  font-weight:700;
  margin:40px 0 12px;
  padding-top:4px;
}
.article-body h3{
  font-size:18px;
  font-weight:600;
  margin:32px 0 10px;
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  margin:24px 0 8px;
}
.article-body p{margin:0 0 1em;}
.article-body ul,
.article-body ol{
  margin:0 0 1.2em;
  padding-left:1.5em;
}
.article-body li{margin-bottom:8px;}
.article-body a{
  color:var(--brand-2);
  text-decoration:underline;
  text-underline-offset:2px;
  transition:background .14s ease;
}
.article-body a:hover{background:var(--lime);color:var(--brand);}
.article-body blockquote{
  margin:24px 0;
  padding:20px 22px;
  background:var(--paper);
  border-left:3px solid var(--lime);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  height:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  margin:24px 0 8px;
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:8px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  font-variant-numeric:tabular-nums;
}
.article-body th,
.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
}
.article-body th{color:var(--muted);font-weight:600;}
.article-body code{
  background:rgba(18,58,46,.07);
  border-radius:4px;
  padding:2px 6px;
  font-size:14px;
}

/* ---------- 空态 ---------- */
.empty-note{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:40px 32px;
  text-align:center;
  box-shadow:var(--sh-1);
}
.empty-note h2{font-size:22px;margin-bottom:12px;}
.empty-note p{color:var(--muted);max-width:44ch;margin:0 auto 24px;}

/* ---------- 侧栏 ---------- */
.article-side{
  position:sticky;
  top:32px;
  display:flex;
  flex-direction:column;
  gap:20px;
  align-self:start;
}
.toc-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
}
.toc-card h3{
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--muted);
  margin:0 0 14px;
}
.toc-toggle{
  display:none;
  width:100%;
  height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--paper);
  color:var(--brand);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
}
.toc-list{list-style:none;padding:0;margin:0;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;
  padding:7px 10px 7px 12px;
  border-left:3px solid transparent;
  border-radius:0 6px 6px 0;
  font-size:14px;
  line-height:1.5;
  color:var(--muted);
  text-decoration:none;
  transition:color .14s ease,border-color .14s ease,background .14s ease;
}
.toc-list a:hover{color:var(--brand-2);background:rgba(18,58,46,.05);}
.toc-list a.active{color:var(--brand);border-left-color:var(--lime);background:rgba(18,58,46,.05);font-weight:600;}
.side-dl{
  background:var(--brand);
  border-radius:var(--r-card);
  padding:20px;
  color:#fff;
}
.side-dl img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.16);
  margin-bottom:16px;
}
.side-dl h3{font-size:17px;font-weight:700;color:#fff;margin:0 0 8px;}
.side-dl p{font-size:13px;line-height:1.75;color:rgba(255,255,255,.72);margin:0 0 16px;}
.side-dl .btn{width:100%;margin-bottom:8px;}
.side-dl .btn:last-child{margin-bottom:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease,filter .16s ease;
}
.btn-primary{background:var(--brand);color:var(--paper);}
.btn-primary:hover{background:var(--brand-2);}
.btn-lime{background:var(--lime);color:var(--brand);font-weight:700;}
.btn-lime:hover{filter:brightness(.94);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand);color:var(--paper);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.1);border-color:#fff;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}

/* ---------- 文末推荐 ---------- */
.article-foot{margin-top:56px;padding-top:40px;border-top:1px solid var(--line);}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:20px;
}
.sec-head h2{font-size:24px;font-weight:700;letter-spacing:-.01em;}
.text-link{
  font-size:14px;color:var(--brand-2);text-decoration:underline;
  text-underline-offset:3px;
  transition:background .14s ease;
}
.text-link:hover{background:var(--lime);color:var(--brand);}
.rel-list{
  list-style:none;
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--line);
}
.rel-list li{border-bottom:1px solid var(--line);}
.rel-list a{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:72px;
  padding:14px 4px;
  text-decoration:none;
  color:var(--ink);
  transition:background .14s ease;
}
.rel-list a:hover{background:rgba(18,58,46,.04);}
.rel-tag{
  flex:none;
  display:inline-flex;align-items:center;height:22px;padding:0 8px;
  border-radius:var(--r-tag);
  background:rgba(18,58,46,.08);
  color:var(--brand-2);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.rel-title{
  flex:1;
  min-width:0;
  font-size:16px;
  font-weight:500;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.rel-list time{
  flex:none;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.rel-arrow{
  flex:none;
  color:var(--brand-2);
  font-style:normal;
  transition:transform .16s ease;
}
.rel-list a:hover .rel-arrow{transform:translateX(2px);}
.article-nav{
  display:flex;
  gap:12px;
  margin-top:28px;
  flex-wrap:wrap;
}

/* ---------- 下载 CTA ---------- */
.cta-bar{margin-top:72px;}
.cta-inner{
  background:var(--brand);
  border-radius:var(--r-block);
  padding:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.cta-inner::after{
  content:"";
  position:absolute;
  right:48px;bottom:28px;
  width:48px;height:4px;
  background:var(--lime);
  border-radius:2px;
}
.cta-inner h2{font-size:30px;font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:-.01em;}
.cta-inner p{margin:0;color:rgba(255,255,255,.74);font-size:15px;max-width:52ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand);
  color:rgba(255,255,255,.78);
  padding:72px 0 28px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand .logo{font-size:21px;margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);margin:0;max-width:34ch;}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin:0 0 16px;
  letter-spacing:.02em;
}
.site-footer ul{list-style:none;}
.site-footer li{margin-bottom:8px;}
.site-footer li a{
  color:rgba(255,255,255,.76);
  text-decoration:none;
  font-size:14px;
  transition:color .14s ease;
}
.site-footer li a:hover{color:var(--lime);}
.site-footer .f-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin:0 0 8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  margin-top:48px;
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
}
.footer-bottom p{margin:0;color:rgba(255,255,255,.58);font-variant-numeric:tabular-nums;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-wrap{grid-template-columns:minmax(0,1fr);gap:24px;}
  .article-side{position:static;order:-1;}
  .side-dl{display:none;}
  .toc-toggle{display:block;margin-bottom:10px;}
  .toc-list{display:none;}
  .toc-list.open{display:block;}
}
@media (max-width:1024px){
  .side-nav{
    width:280px;
    transform:translateX(-100%);
    transition:transform .22s cubic-bezier(.2,.7,.2,1);
    box-shadow:var(--sh-2);
  }
  .side-nav.open{transform:none;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:56px;}
  .main-inner{padding:0 24px;}
  .article-head h1{font-size:34px;}
  .article-cover img{aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{padding:36px;}
  .cta-inner h2{font-size:26px;}
}
@media (max-width:768px){
  .main-inner{padding:0 20px;}
  .main-body{padding-top:24px;}
  .article-head h1{font-size:30px;}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:20px;margin-top:36px;}
  .article-body h3{font-size:17px;}
  .breadcrumb .crumb-now{max-width:180px;}
  .article-cover{margin-bottom:28px;}
  .cta-inner{padding:28px;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .rel-list a{gap:10px;flex-wrap:wrap;}
  .rel-title{white-space:normal;flex-basis:100%;order:3;}
  .rel-list time{order:2;margin-left:auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:48px 0 24px;margin-top:64px;}
  .cta-bar{margin-top:52px;}
  .article-foot{margin-top:44px;padding-top:32px;}
  .sec-head h2{font-size:20px;}
}
@media (max-width:520px){
  .article-head h1{font-size:26px;}
  .article-nav .btn{width:100%;}
  .cta-actions .btn{width:100%;flex:1 1 100%;}
  .meta-row{font-size:12px;gap:8px;}
  .cta-inner::after{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
}

/* roulang page: category3 */
:root{
  --ink:#0C1A16;
  --brand:#123A2E;
  --brand-2:#1E5C47;
  --lime:#D8F45C;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E2DED2;
  --muted:#5C6B64;
  --accent-warm:#C4552F;
  --r-tag:4px;
  --r-btn:10px;
  --r-card:16px;
  --r-block:24px;
  --sh-1:0 1px 2px rgba(12,26,22,.06);
  --sh-2:0 12px 32px -12px rgba(12,26,22,.18);
  --sidebar:248px;
  --s-1:8px; --s-2:12px; --s-3:16px; --s-4:24px; --s-5:32px; --s-6:48px; --s-7:72px; --s-8:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-2);text-decoration:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--ink);letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}

/* ============ 布局骨架 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar);
  background:var(--brand);
  color:#EDF3EF;
  display:flex;
  flex-direction:column;
  padding:26px 14px 22px;
  z-index:80;
  overflow-y:auto;
}
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.main-inner{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ============ Logo ============ */
.logo{
  display:flex;
  align-items:baseline;
  gap:2px;
  color:#fff;
  font-weight:800;
  letter-spacing:-.02em;
  text-decoration:none;
}
.logo b{font-size:21px;font-weight:800}
.logo span{font-size:13px;font-weight:600;color:var(--lime);letter-spacing:.02em}
.sidebar .logo{padding:4px 8px 0}
.brand-note{
  font-size:12px;
  line-height:1.6;
  color:rgba(237,243,239,.62);
  padding:8px 8px 0;
  letter-spacing:.02em;
}

/* ============ 侧栏导航 ============ */
.side-nav{
  margin-top:26px;
  display:flex;
  flex-direction:column;
  gap:2px;
  flex:1;
}
.nav-item{
  position:relative;
  display:block;
  padding:11px 14px 11px 20px;
  font-size:15px;
  font-weight:500;
  color:rgba(237,243,239,.78);
  border-radius:8px;
  transition:background .16s ease,color .16s ease;
}
.nav-item::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  background:var(--lime);
  border-radius:2px;
  transition:height .18s ease,background .18s ease;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item:hover::before{height:18px;background:rgba(216,244,92,.5)}
.nav-item.active{background:rgba(255,255,255,.06);color:#fff;font-weight:600}
.nav-item.active::before{height:22px;background:var(--lime)}

.side-foot{
  margin-top:22px;
  padding:16px 8px 0;
  border-top:1px solid rgba(255,255,255,.14);
}
.side-dl{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  border-radius:var(--r-btn);
  background:var(--lime);
  color:var(--brand);
  font-weight:700;
  font-size:14px;
  transition:filter .16s ease;
}
.side-dl:hover{filter:brightness(.94)}
.side-ver{
  margin-top:10px;
  font-size:12px;
  color:rgba(237,243,239,.55);
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  text-align:center;
}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:90;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  background:var(--brand);
  color:#fff;
}
.topbar .logo b{font-size:18px}
.topbar .logo span{font-size:12px}
.burger{
  width:40px;height:40px;
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  background:transparent;
  border:1px solid rgba(255,255,255,.22);
  border-radius:8px;
  padding:0;
}
.burger span{display:block;width:16px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.scrim{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(12,26,22,.5);
  z-index:75;
  opacity:0;
  transition:opacity .2s ease;
}
.scrim.show{display:block;opacity:1}

/* ============ 通用元素 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.btn svg,.btn .arw{transition:transform .16s ease}
.btn:hover .arw{transform:translateX(2px)}
.btn-primary{background:var(--brand);color:var(--paper)}
.btn-primary:hover{background:var(--brand-2)}
.btn-lime{background:var(--lime);color:var(--brand);font-weight:700}
.btn-lime:hover{filter:brightness(.94)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand);color:var(--paper)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-2);
  font-weight:600;
  font-size:15px;
  border-bottom:1px solid rgba(30,92,71,.35);
  padding-bottom:1px;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.link-arrow:hover{background:var(--lime);color:var(--brand);border-color:var(--lime)}

.badge{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 8px;
  border-radius:var(--r-tag);
  background:rgba(18,58,46,.08);
  color:var(--brand-2);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-lime{background:rgba(216,244,92,.55);color:var(--brand)}

.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:24px 0 0;
  flex-wrap:wrap;
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:#B9B4A5}
.crumb .cur{color:var(--ink);font-weight:600}

.section{padding:var(--s-8) 0}
.section-tight{padding:var(--s-7) 0}
.sec-head{max-width:760px;margin-bottom:var(--s-5)}
.sec-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand-2);
  text-transform:uppercase;
  margin-bottom:12px;
}
.sec-kicker::before{
  content:"";
  width:6px;height:6px;
  background:var(--lime);
  border-bottom:1px solid rgba(12,26,22,.2);
  border-right:1px solid rgba(12,26,22,.2);
}
.sec-head h2{font-size:32px;font-weight:700;letter-spacing:-.015em}
.sec-head p{margin-top:12px;color:var(--muted);font-size:16px;max-width:64ch}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:34px 0 0;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:0;right:0;
  width:46%;
  height:420px;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.08;
  border-bottom-left-radius:var(--r-block);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:48px 0 64px;
}
.hero h1{
  font-size:44px;
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  margin-bottom:18px;
  max-width:16ch;
}
.hero h1 em{font-style:normal;color:var(--brand-2)}
.lede{
  font-size:17px;
  color:var(--muted);
  max-width:36ch;
  line-height:1.75;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px}
.meta-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 18px;
  margin-top:30px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}
.meta-strip .mi{display:flex;align-items:baseline;gap:6px;padding-right:18px;border-right:1px solid var(--line)}
.meta-strip .mi:last-child{border-right:0;padding-right:0}
.meta-strip strong{color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums}

.hero-visual{position:relative}
.hero-visual img{
  width:100%;
  aspect-ratio:4/5;
  object-fit:cover;
  border-radius:var(--r-block);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.hero-visual::after{
  content:"";
  position:absolute;
  left:24px;right:24px;bottom:24px;
  height:4px;
  background:var(--lime);
  border-radius:2px;
}

/* ============ 图文交替 ============ */
.split{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:56px;
  align-items:center;
  padding:var(--s-6) 0;
}
.split + .split{border-top:1px solid var(--line)}
.split-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-block);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.split-text h3{font-size:26px;font-weight:700;letter-spacing:-.015em;margin-bottom:14px}
.split-text p{color:var(--muted);font-size:16px;max-width:52ch}
.split-text ul{margin:18px 0 0;display:flex;flex-direction:column;gap:10px}
.split-text li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--ink);
  line-height:1.7;
}
.split-text li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:6px;height:6px;
  background:var(--brand-2);
  border-radius:1px;
}
.split.reverse .split-media{order:2}
.split.reverse .split-text{order:1}

/* ============ 编号特性 ============ */
.feat-wrap{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.feat-list{display:flex;flex-direction:column;gap:0}
.feat-item{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:32px;
  padding:34px 0;
  border-top:1px solid var(--line);
  align-items:start;
}
.feat-item:first-child{border-top:0}
.feat-no{
  font-size:44px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--brand-2);
  font-variant-numeric:tabular-nums;
  opacity:.9;
}
.feat-body h3{font-size:21px;font-weight:600;margin-bottom:8px}
.feat-body p{color:var(--muted);margin:0;max-width:60ch}
.feat-item:nth-child(2){padding-left:64px}
.feat-item:nth-child(3){padding-left:24px}

/* ============ 截图轮播 ============ */
.shots-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.shots-nav{display:flex;gap:10px}
.circ{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--card);
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  transition:background .16s ease,border-color .16s ease,color .16s ease;
}
.circ:hover{background:var(--brand);border-color:var(--brand);color:var(--paper)}
.shots{
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 18px;
  scrollbar-width:none;
}
.shots::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 calc((100% - 48px)/3);
  scroll-snap-align:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .12s ease,border-color .12s ease,box-shadow .12s ease;
}
.shot:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--sh-2)}
.shot img{width:100%;aspect-ratio:3/4;object-fit:cover;border-bottom:1px solid var(--line)}
.shot-cap{padding:14px 16px 16px}
.shot-cap h4{font-size:15px;font-weight:600;margin-bottom:4px}
.shot-cap p{font-size:13px;color:var(--muted);margin:0;line-height:1.65}
.dots{display:flex;gap:8px;justify-content:center;margin-top:6px}
.dot{
  width:6px;height:6px;
  border-radius:50%;
  background:#CFCBBD;
  border:0;
  padding:0;
  transition:background .16s ease,transform .16s ease;
}
.dot.on{background:var(--brand);transform:scale(1.4)}

/* ============ 提示小卡 ============ */
.tips-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.tip-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .12s ease,border-color .12s ease;
}
.tip-card:hover{transform:translateY(-3px);border-color:var(--brand-2)}
.tip-card .badge{margin-bottom:12px}
.tip-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.tip-card p{margin:0;color:var(--muted);font-size:15px}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.faq-aside h2{font-size:32px;font-weight:700;letter-spacing:-.015em;margin-bottom:12px}
.faq-aside p{color:var(--muted);max-width:30ch;margin-bottom:20px}
.faq-list{display:flex;flex-direction:column;gap:12px}
details{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color .16s ease;
}
details[open]{border-color:var(--brand-2)}
summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:16px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  line-height:1;
  color:var(--brand-2);
  flex:0 0 auto;
  transition:transform .2s ease;
}
details[open] summary::after{content:"−"}
details .ans{padding:0 20px 20px;color:var(--muted);font-size:15px}
details .ans p:last-child{margin-bottom:0}

/* ============ 下载 CTA ============ */
.cta-card{
  background:var(--brand);
  color:var(--paper);
  border-radius:var(--r-block);
  padding:56px;
  display:grid;
  grid-template-columns:1fr 168px;
  gap:40px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-card::before{
  content:"";
  position:absolute;
  top:0;right:0;
  width:38%;
  height:100%;
  background:url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  opacity:.12;
  pointer-events:none;
}
.cta-card h2{font-size:30px;font-weight:700;color:#fff;letter-spacing:-.015em;margin-bottom:12px}
.cta-card p{color:rgba(247,245,239,.75);margin-bottom:24px;max-width:48ch}
.cta-line{width:48px;height:4px;background:var(--lime);border-radius:2px;margin-bottom:20px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative}
.cta-actions .btn-ghost{color:var(--paper);border-color:rgba(247,245,239,.45)}
.cta-actions .btn-ghost:hover{background:var(--paper);color:var(--brand);border-color:var(--paper)}
.qr{
  position:relative;
  width:148px;height:148px;
  background:#fff;
  border:1px solid rgba(247,245,239,.55);
  border-radius:var(--r-card);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:8px;
  justify-self:end;
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  text-align:center;
  padding:10px;
}
.qr .qr-mark{
  width:56px;height:56px;
  border:2px solid var(--brand);
  border-radius:6px;
  position:relative;
}
.qr .qr-mark::before{
  content:"";
  position:absolute;
  inset:10px;
  background:var(--lime);
  border-radius:2px;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-left:var(--sidebar);
  background:var(--brand);
  color:rgba(247,245,239,.78);
  margin-top:auto;
}
.site-footer .main-inner{padding:64px 32px 26px}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:34ch;color:rgba(247,245,239,.66)}
.f-col h4{
  font-size:14px;
  font-weight:700;
  color:#fff;
  letter-spacing:.04em;
  margin-bottom:16px;
}
.f-col ul{display:flex;flex-direction:column;gap:10px}
.f-col p{font-size:14px;margin:0 0 10px;color:rgba(247,245,239,.66)}
.f-col a{color:rgba(247,245,239,.78);font-size:14px;transition:color .16s ease}
.f-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(247,245,239,.55);
}
.footer-bottom p{margin:0;font-variant-numeric:tabular-nums}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1440px){
  .main-inner{max-width:1120px}
}
@media (max-width:1200px){
  .hero-grid{gap:40px}
  .split{gap:40px}
  .cta-card{padding:44px;grid-template-columns:1fr 148px}
}
@media (max-width:1024px){
  .sidebar{
    transform:translateX(-100%);
    transition:transform .22s cubic-bezier(.2,.7,.2,1);
    width:280px;
    box-shadow:var(--sh-2);
  }
  .sidebar.open{transform:translateX(0)}
  .topbar{display:flex}
  .main{margin-left:0}
  .site-footer{margin-left:0}
  .main-inner{padding:0 24px}
  .site-footer .main-inner{padding:48px 24px 24px}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:32px 0 48px}
  .hero h1{font-size:36px;max-width:20ch}
  .hero-visual{max-width:440px}
  .hero-visual img{aspect-ratio:16/11}
  .split{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .split.reverse .split-media{order:0}
  .split.reverse .split-text{order:1}
  .split-media img{aspect-ratio:16/10}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-aside p{max-width:56ch}
  .shot{flex:0 0 calc((100% - 24px)/2)}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:36px}
  .qr{justify-self:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
}
@media (max-width:768px){
  .hero h1{font-size:32px}
  .sec-head h2{font-size:25px}
  .faq-aside h2{font-size:25px}
  .cta-card h2{font-size:24px}
  .split-text h3{font-size:22px}
  .feat-item{grid-template-columns:64px 1fr;gap:20px;padding:26px 0}
  .feat-item:nth-child(2),.feat-item:nth-child(3){padding-left:0}
  .feat-no{font-size:32px}
  .tips-grid{grid-template-columns:1fr}
  .shot{flex:0 0 78%}
  .meta-strip{gap:12px 0}
  .meta-strip .mi{padding-right:14px}
}
@media (max-width:520px){
  .main-inner{padding:0 18px}
  .site-footer .main-inner{padding:40px 18px 22px}
  .hero h1{font-size:29px;letter-spacing:-.015em}
  .lede{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch;gap:10px}
  .hero-actions .link-arrow{align-self:flex-start}
  .meta-strip{flex-direction:column;align-items:flex-start;gap:8px}
  .meta-strip .mi{border-right:0;padding-right:0}
  .btn{height:46px;padding:0 20px;font-size:14px}
  .cta-card{padding:28px 22px}
  .cta-actions .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .section{padding:44px 0}
  .section-tight{padding:36px 0}
  .tip-card{padding:20px}
  summary{font-size:15px;padding:14px 16px}
  details .ans{padding:0 16px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink:#0C1A16;
  --brand:#123A2E;
  --brand-2:#1E5C47;
  --lime:#D8F45C;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E2DED2;
  --muted:#5C6B64;
  --warm:#C4552F;
  --r-sm:4px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:24px;
  --shadow-1:0 1px 2px rgba(12,26,22,.06);
  --shadow-2:0 12px 32px -12px rgba(12,26,22,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-2);text-decoration:none;transition:color 140ms ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:248px;
  background:var(--brand);color:#EAF1EC;
  display:flex;flex-direction:column;
  padding:28px 16px 20px;z-index:60;
}
.side-brand{padding:0 6px 24px;border-bottom:1px solid rgba(255,255,255,.1)}
.logo{display:inline-flex;align-items:baseline;gap:2px;font-size:21px;font-weight:800;color:#fff;letter-spacing:-.01em}
.logo b{font-weight:800;color:#fff}
.logo span{font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--lime)}
.side-brand-note{margin-top:10px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.55);letter-spacing:.01em}
.side-nav{margin-top:20px;display:flex;flex-direction:column;gap:2px}
.side-nav .nav-item{
  position:relative;display:block;height:44px;line-height:44px;
  padding:0 14px 0 20px;border-radius:8px;
  font-size:15px;font-weight:500;color:rgba(255,255,255,.78);
  transition:background 140ms ease,color 140ms ease;
}
.side-nav .nav-item::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;
  background:transparent;transition:background 140ms ease;
}
.side-nav .nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.side-nav .nav-item:hover::before{background:rgba(216,244,92,.5)}
.side-nav .nav-item.active{background:rgba(255,255,255,.06);color:#fff}
.side-nav .nav-item.active::before{background:var(--lime)}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.1)}
.side-ver{margin-top:10px;font-size:12px;color:rgba(255,255,255,.5);font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.6}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background 140ms ease,color 140ms ease,border-color 140ms ease;
}
.btn svg{transition:transform 140ms ease}
.btn:hover svg{transform:translateX(2px)}
.btn-primary{background:var(--brand);color:#F7F5EF}
.btn-primary:hover{background:var(--brand-2);color:#F7F5EF}
.btn-lime{background:var(--lime);color:var(--brand);font-weight:700;width:100%}
.btn-lime:hover{filter:brightness(.94);color:var(--brand)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand);color:#F7F5EF}
.btn-block{width:100%}

/* ============ 移动端栏与抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:var(--brand);z-index:70;box-shadow:0 1px 2px rgba(12,26,22,.2);
}
.mobile-bar .logo{font-size:18px}
.mobile-bar .logo span{font-size:12px}
.burger{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.24);border-radius:8px;
  background:transparent;display:grid;place-items:center;cursor:pointer;padding:0;
}
.burger span{display:block;width:18px;height:2px;background:#fff;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--brand);
  padding:24px 16px;display:flex;flex-direction:column;z-index:90;
  transform:translateX(-100%);transition:transform 220ms var(--ease);
}
.drawer.open{transform:translateX(0)}
.scrim{
  position:fixed;inset:0;background:rgba(12,26,22,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity 200ms ease,visibility 200ms ease;
}
.scrim.show{opacity:1;visibility:visible}

/* ============ 主区域 ============ */
.main{margin-left:248px;min-height:100vh;background:var(--paper)}
.main-inner{max-width:1180px;margin:0 auto;padding:0 32px}

/* ============ 面包屑与首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 40px;border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-60px;top:-40px;width:420px;height:320px;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.07;border-radius:var(--r-xl);pointer-events:none;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);letter-spacing:.02em;flex-wrap:wrap}
.crumbs a{color:var(--brand-2)}
.crumbs a:hover{color:var(--brand);text-decoration:underline}
.crumbs .sep{color:var(--line)}
.badge{
  display:inline-block;height:22px;line-height:22px;padding:0 10px;
  font-size:12px;font-weight:600;letter-spacing:.02em;border-radius:var(--r-sm);
  background:rgba(18,58,46,.08);color:var(--brand-2);
}
.hero-head{margin-top:20px;max-width:820px;position:relative;z-index:1}
.hero-head h1{font-size:44px;font-weight:800;line-height:1.1;letter-spacing:-.02em}
.lede{margin-top:16px;font-size:17px;line-height:1.8;color:var(--muted);max-width:66ch}
.hero-facts{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;position:relative;z-index:1}
.hero-facts .fact{padding-left:16px;border-left:1px solid var(--line)}
.hero-facts .fact:first-child{padding-left:0;border-left:0}
.fact-k{display:block;font-size:12px;letter-spacing:.04em;color:var(--muted)}
.fact-v{display:block;font-size:15px;font-weight:600;color:var(--ink);margin-top:2px;font-variant-numeric:tabular-nums}

/* ============ 版块通用 ============ */
.section{padding:72px 0}
.section + .section{padding-top:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.sec-head h2{font-size:32px;font-weight:700;line-height:1.25}
.sec-head .sec-desc{margin-top:10px;color:var(--muted);font-size:15px;max-width:62ch}

/* ============ 登录双栏 ============ */
.login-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start}
.steps{border-top:1px solid var(--line)}
.step{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.step-num{font-size:22px;font-weight:800;color:var(--brand-2);line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.step h3{font-size:19px;font-weight:600;line-height:1.4}
.step p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.85;max-width:52ch}

.login-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-1);
}
@media (min-width:1200px){.login-card{position:sticky;top:24px}}
.login-card h3{font-size:19px;font-weight:600}
.login-card .card-desc{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75}
.field{margin-top:18px}
.field label{display:block;font-size:13px;letter-spacing:.02em;color:var(--muted);margin-bottom:8px}
.input{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color 140ms ease,box-shadow 140ms ease;
}
.input::placeholder{color:#9AA8A1}
.input:hover{border-color:#CFC9B8}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(216,244,92,.55)}
.login-card .btn{margin-top:22px}
.safe-bar{
  margin-top:16px;padding:12px 14px;border-radius:var(--r-md);
  background:rgba(18,58,46,.06);color:var(--brand-2);
  font-size:13px;line-height:1.7;display:flex;gap:8px;align-items:flex-start;
}
.safe-bar .sq{flex:none;width:6px;height:6px;margin-top:8px;background:var(--brand-2);border-radius:1px}
.form-note{margin-top:14px;font-size:13px;line-height:1.7;color:var(--muted);min-height:22px}
.form-note.err{color:var(--warm)}

/* ============ 异常对照 ============ */
.rowlist{border-top:1px solid var(--line)}
.row{
  display:grid;grid-template-columns:.9fr 1.6fr;gap:32px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--line);
  transition:background 140ms ease;
}
.row:hover{background:rgba(255,255,255,.6)}
.row h4{font-size:17px;font-weight:600;line-height:1.5;display:flex;align-items:center;gap:10px}
.row h4 .sq{flex:none;width:6px;height:6px;background:var(--lime);border-radius:1px}
.row p{font-size:15px;color:var(--muted);line-height:1.8}

/* ============ 核对清单图文 ============ */
.split{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center}
.split-media{position:relative}
.split-media img{
  width:100%;height:100%;min-height:280px;object-fit:cover;
  border-radius:var(--r-xl);border:1px solid var(--line);
}
.split-media::after{
  content:"";position:absolute;left:24px;bottom:-12px;width:48px;height:4px;
  background:var(--lime);border-radius:2px;
}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}
.check{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;transition:transform 120ms ease,border-color 120ms ease,box-shadow 140ms ease;
}
.check:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--shadow-2)}
.check .dot{
  flex:none;width:24px;height:24px;border-radius:6px;
  background:rgba(216,244,92,.6);color:var(--brand);
  display:grid;place-items:center;font-size:13px;font-weight:700;line-height:1;
}
.check strong{display:block;font-size:15px;font-weight:600;line-height:1.5}
.check em{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:4px;line-height:1.7}

/* ============ FAQ ============ */
.faq-list{max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color 140ms ease;
}
.faq-item.open{border-color:var(--brand-2)}
.faq-q{
  width:100%;min-height:56px;padding:16px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand-2)}
.faq-ic{position:relative;flex:none;width:16px;height:16px}
.faq-ic::before,.faq-ic::after{
  content:"";position:absolute;left:0;top:7px;width:16px;height:2px;
  background:var(--brand-2);border-radius:1px;transition:transform 200ms ease,opacity 200ms ease;
}
.faq-ic::after{transform:rotate(90deg)}
.faq-item.open .faq-ic::after{transform:rotate(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease}
.faq-a p{padding:0 20px 20px;font-size:15px;color:var(--muted);line-height:1.85;max-width:68ch}

/* ============ 下载 CTA ============ */
.dl-card{
  background:var(--brand);color:#EAF1EC;border-radius:var(--r-xl);
  padding:56px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.dl-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.1;border-radius:50%;pointer-events:none;
}
.dl-card h2{font-size:30px;font-weight:800;color:#fff;line-height:1.25;position:relative;z-index:1}
.dl-card .accent-line{width:48px;height:4px;background:var(--lime);border-radius:2px;margin:18px 0}
.dl-card p{font-size:15px;color:rgba(255,255,255,.75);line-height:1.8;max-width:56ch;position:relative;z-index:1}
.dl-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;position:relative;z-index:1}
.dl-actions .btn{height:48px}
.dl-actions .btn-lime{width:auto;padding:0 26px}
.dl-actions .btn-outline{
  background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff;
}
.dl-actions .btn-outline:hover{background:#fff;color:var(--brand);border-color:#fff}
.qr-box{
  position:relative;z-index:1;
  background:#fff;border:1px solid rgba(255,255,255,.4);border-radius:var(--r-md);
  width:140px;padding:10px;text-align:center;flex:none;
}
.qr-box img{width:120px;height:120px;object-fit:cover;border-radius:var(--r-sm)}
.qr-box span{display:block;margin-top:8px;font-size:12px;color:var(--muted);line-height:1.5}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand);color:rgba(255,255,255,.72);margin-top:72px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{font-size:20px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:34ch}
.f-col h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.02em;margin-bottom:14px}
.f-col ul li{margin-bottom:10px}
.f-col a{font-size:14px;color:rgba(255,255,255,.72)}
.f-col a:hover{color:var(--lime)}
.f-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);margin-bottom:4px}
.footer-bottom{
  margin-top:48px;padding:24px 0 32px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 400ms ease-out,transform 400ms ease-out}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .main-inner{padding:0 22px}
  .hero-head h1{font-size:32px}
  .lede{font-size:16px}
  .page-hero{padding:32px 0 32px}
  .section{padding:56px 0}
  .sec-head h2{font-size:24px}
  .login-grid{grid-template-columns:1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:28px}
  .split-media img{min-height:220px}
  .dl-card{grid-template-columns:1fr;padding:36px}
  .dl-card h2{font-size:24px}
  .qr-box{justify-self:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:56px;padding-top:48px}
}
@media (max-width:640px){
  .main-inner{padding:0 18px}
  .hero-head h1{font-size:28px}
  .hero-facts{gap:16px}
  .hero-facts .fact{min-width:44%}
  .check-grid{grid-template-columns:1fr}
  .row{grid-template-columns:1fr;gap:8px;padding:18px 0}
  .step{grid-template-columns:48px 1fr;gap:14px}
  .step-num{font-size:19px}
  .footer-grid{grid-template-columns:1fr}
  .dl-card{padding:28px}
  .dl-actions{flex-direction:column;align-items:stretch}
  .dl-actions .btn{width:100%}
  .faq-q{font-size:15px;padding:14px 16px}
  .faq-a p{padding:0 16px 18px}
}

/* roulang page: category4 */
:root{
  --ink:#0C1A16;
  --brand:#123A2E;
  --brand-2:#1E5C47;
  --lime:#D8F45C;
  --paper:#F7F5EF;
  --card:#FFFFFF;
  --line:#E2DED2;
  --muted:#5C6B64;
  --warm:#C4552F;
  --r-sm:4px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(12,26,22,.06);
  --sh-2:0 12px 32px -12px rgba(12,26,22,.18);
  --side:248px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand-2);text-decoration:none;}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side);
  background:var(--brand);
  color:#fff;
  padding:28px 16px 24px;
  display:flex;
  flex-direction:column;
  gap:24px;
  z-index:60;
  transition:transform .22s var(--ease);
}
.logo{
  display:inline-flex;
  align-items:baseline;
  gap:1px;
  font-size:22px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  text-decoration:none;
}
.logo b{font-weight:800;}
.logo span{font-size:13px;font-weight:600;letter-spacing:0;}
.sidebar .logo{color:#fff;}
.sidebar .logo span{color:var(--lime);}
.sidebar .logo:hover{color:#fff;}
.logo-sub{
  margin-top:8px;
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(255,255,255,.55);
}
.side-nav{display:flex;flex-direction:column;gap:2px;}
.nav-item{
  position:relative;
  display:block;
  padding:11px 20px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.76);
  border-radius:8px;
  transition:background .15s,color .15s;
}
.nav-item::before{
  content:"";
  position:absolute;
  left:0;top:12px;bottom:12px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background .15s;
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-item:hover::before{background:rgba(216,244,92,.5);}
.nav-item.active{color:#fff;background:rgba(255,255,255,.08);}
.nav-item.active::before{background:var(--lime);}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.ver{margin:0;font-size:12px;color:rgba(255,255,255,.5);font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(247,245,239,.96);
  border-bottom:1px solid var(--line);
  z-index:70;
}
.topbar .logo{font-size:19px;color:var(--ink);}
.topbar .logo b{color:var(--brand);}
.topbar .logo span{color:var(--brand-2);}
.burger{
  width:40px;height:40px;
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  cursor:pointer;
}
.burger span{display:block;width:18px;height:1.6px;background:var(--brand);border-radius:2px;transition:transform .2s;}
.scrim{
  position:fixed;inset:0;
  background:rgba(12,26,22,.5);
  z-index:55;
  border:0;
  padding:0;
}

/* ---------- 主区域 ---------- */
.main{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column;}
.main-inner{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .16s,color .16s,border-color .16s,transform .12s,filter .16s;
}
.btn svg{transition:transform .16s;}
.btn:hover svg{transform:translateX(2px);}
.btn-primary{background:var(--brand);color:var(--paper);}
.btn-primary:hover{background:var(--brand-2);color:#fff;}
.btn-lime{background:var(--lime);color:var(--brand);font-weight:700;}
.btn-lime:hover{filter:brightness(.94);color:var(--brand);}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand);color:var(--paper);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost-light:hover{background:#fff;color:var(--brand);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:8px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-2);
  border-bottom:1px solid rgba(30,92,71,.4);
  padding-bottom:2px;
  transition:background .15s,color .15s,border-color .15s;
}
.text-link:hover{background:var(--lime);color:var(--brand);border-color:var(--lime);}
.text-link.on-dark{color:var(--lime);border-color:rgba(216,244,92,.5);}
.text-link.on-dark:hover{background:var(--lime);color:var(--brand);}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  padding:28px 0 0;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:rgba(92,107,100,.5);}
.crumb .now{color:var(--ink);}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);
  gap:48px;
  align-items:center;
  padding:48px 0 56px;
}
.page-hero::before{
  content:"";
  position:absolute;
  right:-24px;
  top:-16px;
  width:400px;
  height:300px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.08;
  border-radius:var(--r-xl);
  pointer-events:none;
  z-index:0;
}
.hero-copy{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--brand-2);
  background:rgba(18,58,46,.07);
  border-radius:var(--r-sm);
  padding:5px 10px;
  margin-bottom:20px;
  font-weight:600;
}
.eyebrow i{width:6px;height:6px;background:var(--lime);border-radius:1px;display:inline-block;}
.page-hero h1{
  font-size:clamp(30px,4vw,44px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  margin-bottom:18px;
  max-width:20ch;
}
.lede{
  font-size:17px;
  color:var(--muted);
  max-width:34ch;
  margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  font-size:13px;
  border-radius:var(--r-sm);
  background:rgba(18,58,46,.08);
  color:var(--brand-2);
  font-variant-numeric:tabular-nums;
}
.hero-media{position:relative;z-index:1;}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--card);
}
.hero-media figcaption{
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
  text-align:center;
}

/* ---------- FAQ 布局 ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:256px minmax(0,1fr);
  gap:48px;
  align-items:start;
  padding-bottom:24px;
}
.faq-index{
  position:sticky;
  top:32px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px 16px;
  box-shadow:var(--sh-1);
}
.faq-index h2{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--muted);
  padding:0 10px 12px;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.faq-index ul{display:flex;flex-direction:column;gap:2px;}
.faq-index a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-radius:8px;
  font-size:14px;
  color:var(--ink);
  transition:background .15s,color .15s;
}
.faq-index a em{
  font-style:normal;
  font-size:12px;
  font-weight:700;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
.faq-index a:hover{background:var(--paper);color:var(--brand-2);}
.faq-index a.active{background:rgba(18,58,46,.08);color:var(--brand);font-weight:600;}
.faq-index a.active em{color:var(--brand-2);}
.index-note{
  margin-top:14px;
  padding:12px 10px 0;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
  line-height:1.7;
}

.faq-group{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  margin-bottom:24px;
  scroll-margin-top:96px;
}
.group-head{
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(216,244,92,.10),rgba(216,244,92,0));
}
.group-num{
  font-size:13px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--brand);
  background:var(--lime);
  border-radius:var(--r-sm);
  padding:3px 8px;
  font-variant-numeric:tabular-nums;
}
.group-head h2{font-size:19px;font-weight:700;letter-spacing:-.01em;}
.group-head .count{
  margin-left:auto;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:18px 24px;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  list-style:none;
  transition:background .15s,color .15s;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:rgba(247,245,239,.9);}
.faq-item[open] summary{color:var(--brand-2);}
.faq-ico{
  position:relative;
  flex:0 0 22px;
  width:22px;height:22px;
  border:1px solid var(--line);
  border-radius:50%;
  transition:background .18s,border-color .18s;
}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:10px;height:1.6px;}
.faq-ico::after{width:1.6px;height:10px;transition:transform .2s,opacity .2s;}
.faq-item[open] .faq-ico{background:var(--lime);border-color:var(--lime);}
.faq-item[open] .faq-ico::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--muted);
  max-width:72ch;
  animation:faqIn .2s ease-out;
}
.faq-a strong{color:var(--ink);font-weight:600;}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ---------- 未解决 CTA ---------- */
.support-card{
  background:var(--brand);
  color:#fff;
  border-radius:var(--r-xl);
  padding:48px;
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);
  gap:40px;
  align-items:center;
  margin:32px 0 0;
  position:relative;
  overflow:hidden;
}
.support-card::after{
  content:"";
  position:absolute;
  right:-60px;bottom:-80px;
  width:280px;height:280px;
  border-radius:50%;
  background:rgba(216,244,92,.07);
  pointer-events:none;
}
.support-card h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.support-card p{color:rgba(255,255,255,.72);max-width:46ch;font-size:15px;}
.support-list{
  display:grid;
  gap:10px;
  padding:20px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.04);
  position:relative;
  z-index:1;
}
.support-list li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.82);
  font-variant-numeric:tabular-nums;
}
.support-list li i{
  width:6px;height:6px;
  background:var(--lime);
  border-radius:1px;
  flex:0 0 6px;
}
.support-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;}

/* ---------- 下载条 ---------- */
.download-strip{
  margin:56px 0 72px;
  background:var(--brand);
  border-radius:var(--r-xl);
  padding:48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:40px;
  align-items:center;
  color:#fff;
  scroll-margin-top:96px;
}
.download-strip h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.download-strip p{color:rgba(255,255,255,.72);font-size:15px;max-width:48ch;}
.accent-line{
  width:48px;height:4px;
  background:var(--lime);
  border-radius:2px;
  margin-bottom:20px;
}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.qr-card{
  width:132px;
  padding:12px;
  background:#fff;
  border:1px solid rgba(255,255,255,.5);
  border-radius:var(--r-md);
  text-align:center;
}
.qr-card img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:6px;}
.qr-card span{display:block;margin-top:8px;font-size:12px;color:var(--brand);font-weight:600;letter-spacing:.02em;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:auto;
  background:var(--brand);
  color:rgba(255,255,255,.7);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:48px;
}
.footer-brand .logo{color:#fff;margin-bottom:14px;}
.footer-brand .logo span{color:var(--lime);}
.footer-brand p{font-size:14px;line-height:1.85;max-width:34ch;color:rgba(255,255,255,.62);}
.f-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:16px;
}
.f-col ul{display:flex;flex-direction:column;gap:10px;}
.f-col li a{font-size:14px;color:rgba(255,255,255,.68);transition:color .15s;}
.f-col li a:hover{color:var(--lime);}
.f-col p{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.5);
  letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .faq-layout{grid-template-columns:216px minmax(0,1fr);gap:32px;}
  .page-hero::before{width:320px;height:240px;}
}
@media (max-width:1024px){
  .topbar{display:flex;}
  .sidebar{
    width:280px;
    transform:translateX(-100%);
    box-shadow:var(--sh-2);
    padding-top:24px;
  }
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;padding-top:56px;}
  .main-inner{padding:0 24px;}
  .crumb{padding-top:20px;}
  .faq-layout{grid-template-columns:1fr;gap:24px;}
  .faq-index{position:static;padding:16px;}
  .faq-index ul{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .faq-index a{background:var(--paper);padding:7px 12px;font-size:13px;}
  .index-note{display:none;}
  .page-hero{grid-template-columns:1fr;gap:32px;padding:32px 0 40px;}
  .hero-media{order:2;}
  .lede{max-width:none;}
  .support-card{grid-template-columns:1fr;padding:36px;gap:28px;}
  .download-strip{grid-template-columns:1fr;padding:36px;gap:28px;}
  .qr-card{width:120px;}
}
@media (max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .support-card,.download-strip{padding:28px;}
  .group-head{padding:16px 18px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-a{padding:0 18px 18px;font-size:14.5px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .main-inner{padding:0 16px;}
  .page-hero h1{font-size:28px;}
  .lede{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .dl-actions .btn{width:100%;}
  .support-card,.download-strip{padding:24px;border-radius:var(--r-lg);}
  .hero-tags{gap:8px;}
  .tag{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category5 */
:root{
    --ink:#0C1A16;
    --brand:#123A2E;
    --brand-2:#1E5C47;
    --lime:#D8F45C;
    --paper:#F7F5EF;
    --card:#FFFFFF;
    --line:#E2DED2;
    --muted:#5C6B64;
    --accent-warm:#C4552F;
    --r-tag:4px;
    --r-btn:10px;
    --r-card:16px;
    --r-block:24px;
    --shadow-1:0 1px 2px rgba(12,26,22,.06);
    --shadow-2:0 12px 32px -12px rgba(12,26,22,.18);
    --s-1:8px; --s-2:12px; --s-3:16px; --s-4:24px; --s-5:32px; --s-6:48px; --s-7:72px; --s-8:96px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--brand-2);text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  .num{font-variant-numeric:tabular-nums;}

  /* ============ 侧栏 ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:248px;
    background:var(--brand);color:#fff;z-index:60;
    display:flex;flex-direction:column;
    padding:26px 0 22px;
  }
  .brand{padding:0 20px 22px;border-bottom:1px solid rgba(255,255,255,.12);}
  .logo{
    display:inline-flex;align-items:baseline;gap:2px;
    font-size:22px;font-weight:800;letter-spacing:-.01em;
    color:#fff;text-decoration:none;line-height:1.2;
  }
  .logo span{font-size:15px;font-weight:600;color:var(--lime);letter-spacing:0;}
  .brand-note{margin-top:10px;font-size:12px;line-height:1.6;color:rgba(255,255,255,.6);}
  .side-nav{padding:16px 12px;display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto;}
  .nav-item{
    position:relative;display:block;padding:11px 20px;border-radius:8px;
    color:rgba(255,255,255,.78);font-size:15px;font-weight:500;
    transition:background .18s ease,color .18s ease;
  }
  .nav-item::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
    border-radius:2px;background:transparent;transition:background .18s ease;
  }
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
  .nav-item:hover::before{background:rgba(216,244,92,.5);}
  .nav-item.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600;}
  .nav-item.active::before{background:var(--lime);}
  .nav-item:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
  .side-foot{padding:18px 20px 0;border-top:1px solid rgba(255,255,255,.12);}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  }
  .btn-lime{background:var(--lime);color:var(--brand);font-weight:700;width:100%;}
  .btn-lime:hover{filter:brightness(.94);}
  .btn-primary{background:var(--brand);color:var(--paper);}
  .btn-primary:hover{background:var(--brand-2);}
  .btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
  .btn-ghost:hover{background:var(--brand);color:var(--paper);}
  .btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
  .side-foot .version-note{margin-top:12px;font-size:12px;line-height:1.6;color:rgba(255,255,255,.55);}

  /* ============ 移动顶部栏 / 抽屉 ============ */
  .topbar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:65;
    background:var(--brand);align-items:center;justify-content:space-between;
    padding:0 16px;box-shadow:0 1px 0 rgba(255,255,255,.08);
  }
  .topbar .logo{font-size:18px;}
  .topbar .logo span{font-size:13px;}
  .menu-btn{
    width:40px;height:40px;border:1px solid rgba(255,255,255,.25);border-radius:8px;
    background:transparent;display:flex;flex-direction:column;justify-content:center;
    align-items:center;gap:4px;cursor:pointer;
  }
  .menu-btn i{display:block;width:18px;height:2px;background:var(--lime);border-radius:2px;}
  .menu-btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;max-width:84vw;
    background:var(--brand);z-index:80;padding:22px 0 24px;
    display:flex;flex-direction:column;overflow-y:auto;
    transform:translateX(-100%);
    transition:transform 220ms cubic-bezier(.2,.7,.2,1);
  }
  .drawer.open{transform:translateX(0);}
  .mask{
    position:fixed;inset:0;background:rgba(12,26,22,.5);z-index:70;
    opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
  }
  .mask.open{opacity:1;visibility:visible;}

  /* ============ 主区域 ============ */
  .app-main{margin-left:248px;}
  .main-inner{max-width:1180px;margin:0 auto;padding:0 40px;}
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    padding:36px 0 0;font-size:13px;color:var(--muted);letter-spacing:.02em;
  }
  .breadcrumb a{color:var(--muted);}
  .breadcrumb a:hover{color:var(--brand-2);}
  .breadcrumb .sep{color:#BFB9A9;}
  .breadcrumb .now{color:var(--ink);font-weight:600;}

  .hero{position:relative;padding:26px 0 44px;overflow:hidden;}
  .hero::before{
    content:"";position:absolute;right:-40px;top:-30px;width:44%;height:300px;
    background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
    opacity:.08;border-radius:var(--r-block);pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:22px;padding:0 10px;border-radius:var(--r-tag);
    background:rgba(18,58,46,.08);color:var(--brand-2);
    font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--brand-2);}
  h1{
    margin:16px 0 0;font-size:44px;line-height:1.16;font-weight:800;letter-spacing:-.02em;
    max-width:22ch;
  }
  .lead{margin-top:14px;font-size:17px;color:var(--muted);max-width:60ch;}
  .hero-text{margin-top:14px;font-size:15.5px;line-height:1.9;color:#33443D;max-width:72ch;}

  .meta-strip{
    margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .meta-item{
    padding:14px 22px;font-size:13px;color:var(--muted);
    display:flex;align-items:baseline;gap:8px;border-left:1px solid var(--line);
  }
  .meta-item:first-child{border-left:0;padding-left:0;}
  .meta-item b{color:var(--ink);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;}

  /* ============ 板块通用 ============ */
  .section{padding:56px 0 0;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
  .section-head h2{font-size:32px;line-height:1.24;font-weight:700;letter-spacing:-.01em;}
  .section-head p{margin-top:8px;font-size:14.5px;color:var(--muted);max-width:56ch;}
  .link-more{font-size:14px;font-weight:600;color:var(--brand-2);border-bottom:1px solid currentColor;padding-bottom:1px;}
  .link-more:hover{background:var(--lime);color:var(--brand);border-color:var(--brand);}

  /* 筛选胶囊 */
  .filters{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .pill{
    display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;
    border:1px solid var(--line);background:var(--card);color:var(--muted);
    font-size:14px;font-weight:600;cursor:pointer;
    transition:background .18s ease,color .18s ease,border-color .18s ease;
  }
  .pill:hover{border-color:var(--brand-2);color:var(--brand);}
  .pill.current{background:var(--brand);border-color:var(--brand);color:#fff;}
  .pill:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}

  /* 主体双栏 */
  .split{display:grid;grid-template-columns:minmax(0,1fr) 344px;gap:40px;align-items:start;margin-top:28px;}

  /* 版本时间线 */
  .timeline{position:relative;padding-left:0;}
  .timeline::before{
    content:"";position:absolute;left:7px;top:12px;bottom:22px;width:1px;background:var(--line);
  }
  .tl-item{position:relative;padding-left:36px;}
  .tl-dot{
    position:absolute;left:0;top:9px;width:15px;height:15px;border-radius:50%;
    background:var(--card);border:1px solid var(--line);
  }
  .tl-item.is-latest .tl-dot{background:var(--lime);border-color:var(--brand-2);}
  .tl-body{
    min-height:72px;padding-bottom:22px;
  }
  .tl-item:not(:last-child) .tl-body{
    border-bottom:1px solid var(--line);margin-bottom:22px;
  }
  .tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
  .ver{font-size:22px;font-weight:800;letter-spacing:-.01em;font-variant-numeric:tabular-nums;color:var(--ink);}
  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:var(--r-tag);
    background:rgba(18,58,46,.08);color:var(--brand-2);font-size:12px;font-weight:600;letter-spacing:.02em;
  }
  .badge.beta{background:rgba(196,85,47,.1);color:var(--accent-warm);}
  .date{font-size:13px;color:var(--muted);letter-spacing:.02em;font-variant-numeric:tabular-nums;}
  .tl-text{margin-top:8px;font-size:15.5px;line-height:1.9;color:#3A4A43;max-width:66ch;}
  .tl-tagline{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}
  .mini-tag{
    font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:var(--r-tag);
    padding:2px 8px;background:var(--card);
  }

  /* 右侧摘要卡 */
  .sticky-wrap{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px;}
  .panel{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--shadow-1);overflow:hidden;
  }
  .panel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
  .panel-cover img{width:100%;height:100%;object-fit:cover;border-bottom:1px solid var(--line);}
  .panel-body{padding:20px 22px 22px;}
  .panel-body h3{font-size:17px;font-weight:700;letter-spacing:0;}
  .kv{margin-top:14px;border-top:1px solid var(--line);}
  .kv-row{
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    min-height:44px;border-bottom:1px solid var(--line);font-size:14px;
  }
  .kv-row span{color:var(--muted);}
  .kv-row b{font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink);font-size:14px;text-align:right;}
  .panel-note{margin-top:14px;font-size:13px;line-height:1.8;color:var(--muted);}
  .panel-cta{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
  .panel-cta .btn{width:100%;}
  .mini-list{margin-top:14px;display:flex;flex-direction:column;gap:9px;}
  .mini-list li{position:relative;padding-left:16px;font-size:14px;color:#3A4A43;line-height:1.75;}
  .mini-list li::before{
    content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:1px;background:var(--brand-2);
  }

  /* 检查清单 */
  .check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px;}
  .check-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px 24px;box-shadow:var(--shadow-1);
    transition:transform .12s ease,border-color .12s ease,box-shadow .18s ease;
  }
  .check-card:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:var(--shadow-2);}
  .check-no{font-size:13px;font-weight:700;color:var(--brand-2);letter-spacing:.08em;font-variant-numeric:tabular-nums;}
  .check-card h3{margin-top:8px;font-size:18px;font-weight:700;}
  .check-card p{margin-top:6px;font-size:14.5px;line-height:1.85;color:var(--muted);}

  /* FAQ */
  .faq{margin-top:24px;border-top:1px solid var(--line);}
  .faq details{border-bottom:1px solid var(--line);}
  .faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:60px;padding:16px 4px;font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary::after{
    content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;
    border:1px solid var(--line);color:var(--brand-2);font-size:16px;font-weight:600;
    display:flex;align-items:center;justify-content:center;line-height:1;
  }
  .faq details[open] summary::after{content:"−";background:var(--brand);border-color:var(--brand);color:var(--lime);}
  .faq summary:hover{color:var(--brand-2);}
  .faq summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
  .faq-answer{padding:0 4px 20px;font-size:15px;line-height:1.9;color:#3A4A43;max-width:70ch;}

  /* 下载 CTA */
  .cta-box{
    margin-top:56px;background:var(--brand);color:#fff;border-radius:var(--r-block);
    padding:44px 48px;display:grid;grid-template-columns:minmax(0,1fr) auto;
    gap:32px;align-items:center;position:relative;overflow:hidden;
  }
  .cta-box::after{
    content:"";position:absolute;left:48px;bottom:34px;width:48px;height:4px;background:var(--lime);border-radius:2px;
  }
  .cta-box h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
  .cta-box p{margin-top:10px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.76);max-width:56ch;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;padding-bottom:18px;}
  .cta-box .btn-ghost{color:#fff;border-color:rgba(255,255,255,.45);}
  .cta-box .btn-ghost:hover{background:#fff;color:var(--brand);border-color:#fff;}
  .qr{
    width:132px;padding:8px;background:#fff;border:1px solid rgba(255,255,255,.4);
    border-radius:12px;flex:0 0 auto;
  }
  .qr img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:6px;}
  .qr span{display:block;text-align:center;font-size:11px;color:#4A5A53;margin-top:6px;letter-spacing:.04em;}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-left:248px;margin-top:88px;background:var(--brand);color:rgba(255,255,255,.78);
    padding:64px 0 0;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
  .footer-brand .logo{font-size:20px;}
  .footer-brand .logo span{font-size:14px;}
  .footer-brand p{margin-top:14px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:36ch;}
  .f-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
  .f-col ul{display:flex;flex-direction:column;gap:10px;}
  .f-col li{font-size:14px;color:rgba(255,255,255,.66);line-height:1.75;}
  .f-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease;}
  .f-col a:hover{color:var(--lime);}
  .f-col a:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:3px;}
  .footer-bottom{
    margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0 30px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;
  }

  /* ============ 动效 ============ */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out;}
  .reveal.in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none;}
    .drawer,.mask,.btn,.pill,.check-card,.nav-item{transition:none;}
  }

  /* ============ 响应式 ============ */
  @media (max-width:1200px){
    .split{grid-template-columns:minmax(0,1fr) 300px;gap:28px;}
  }
  @media (max-width:1024px){
    .sidebar{display:none;}
    .topbar{display:flex;}
    .app-main{margin-left:0;padding-top:56px;}
    .site-footer{margin-left:0;}
    .main-inner{padding:0 22px;}
    .split{grid-template-columns:minmax(0,1fr);}
    .sticky-wrap{position:static;}
    .cta-box{grid-template-columns:minmax(0,1fr);padding:36px 28px;}
    .cta-box::after{left:28px;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  }
  @media (max-width:768px){
    h1{font-size:32px;}
    .section-head h2{font-size:24px;}
    .lead{font-size:16px;}
    .hero{padding:20px 0 34px;}
    .section{padding:44px 0 0;}
    .check-grid{grid-template-columns:minmax(0,1fr);}
    .meta-item{padding:10px 16px;font-size:12.5px;}
    .meta-item:first-child{padding-left:0;}
    .tl-body{min-height:0;}
    .cta-box h2{font-size:22px;}
    .site-footer{margin-top:64px;padding-top:48px;}
    .footer-grid{grid-template-columns:minmax(0,1fr);}
    .footer-bottom{flex-direction:column;}
  }
  @media (max-width:520px){
    .main-inner{padding:0 16px;}
    h1{font-size:28px;}
    .breadcrumb{padding-top:24px;}
    .ver{font-size:20px;}
    .tl-item{padding-left:28px;}
    .timeline::before{left:6px;}
    .tl-dot{width:13px;height:13px;}
    .cta-actions .btn{width:100%;}
    .qr{width:112px;}
    .panel-body{padding:18px;}
    .check-card{padding:18px;}
  }