/* roulang page: index */
:root{
  --ink:#0B2B26;
  --brand:#0F6B5C;
  --action:#1FC8A0;
  --warm:#E9A23B;
  --canvas:#F5F7F5;
  --surface:#FFFFFF;
  --line:#E1E6E3;
  --text:#1E2A28;
  --muted:#5A6B67;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(11,43,38,.06);
  --sh-2:0 10px 24px rgba(11,43,38,.10);
  --ease:180ms ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.4}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd,dt{margin:0}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:0}
.shell{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.shell{padding:0 24px}}
.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
.no-scrollbar::-webkit-scrollbar{display:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.section{padding:80px 0}
@media (max-width:1023px){.section{padding:56px 0}}
@media (max-width:639px){.section{padding:40px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:34px}
.section-head h2{font-size:26px;letter-spacing:-.01em;margin-bottom:6px}
.section-sub{font-size:14px;color:var(--muted);line-height:1.7;max-width:640px;margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--action);border-radius:2px}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.brandbar{display:flex;align-items:center;gap:16px;padding:12px 0}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--ink);display:grid;place-items:center;flex-shrink:0}
.brand-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{display:none;align-items:center;gap:8px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--canvas)}
.search-box input{border:0;background:transparent;outline:none;width:150px;font-size:14px}
.search-box input::placeholder{color:var(--muted)}
@media (min-width:768px){.search-box{display:flex}}
.select-ver{display:none;height:40px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;font-size:14px;color:var(--muted)}
@media (min-width:900px){.select-ver{display:block}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);border:1px solid transparent;font-weight:600;cursor:pointer;transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);white-space:nowrap}
.btn-primary{height:48px;padding:0 22px;background:var(--action);color:var(--ink);box-shadow:var(--sh-1)}
.btn-primary:hover{background:#17b992;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-ghost{height:48px;padding:0 20px;border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);background:#EAF6F2;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow span{transition:transform var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}
.channelbar{border-top:1px solid var(--line)}
.channelnav{display:flex;gap:4px;overflow-x:auto;align-items:center}
.channelnav a{position:relative;padding:12px 14px;font-size:15px;color:var(--muted);white-space:nowrap;border-bottom:2px solid transparent;font-weight:500;transition:color var(--ease),border-color var(--ease)}
.channelnav a:hover{color:var(--brand)}
.channelnav a.active{color:var(--ink);font-weight:600;border-bottom-color:var(--brand)}
.channelnav a:first-child{padding-left:0}

/* status strip */
.status-strip{background:var(--ink);color:#CFE7E0}
.status-strip .shell{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-top:9px;padding-bottom:9px;font-size:13px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--action);flex-shrink:0;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.status-strip .sep{opacity:.35}
.status-strip strong{color:#fff;font-weight:600}

/* hero */
.hero{padding:64px 0 72px;background:#fff;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:44px;align-items:center}
@media (min-width:960px){.hero-grid{grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:56px}}
.hero h1{font-size:34px;line-height:1.35;letter-spacing:-.015em;margin-bottom:18px}
@media (min-width:768px){.hero h1{font-size:40px}}
.hero-sub{font-size:17px;color:var(--muted);line-height:1.85;max-width:560px;margin-bottom:26px}
.hero-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:#EAF6F2;color:var(--brand);font-size:13px;font-weight:600;margin-bottom:18px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.meta-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 20px;padding-top:24px;border-top:1px solid var(--line)}
@media (min-width:640px){.meta-strip{grid-template-columns:repeat(4,minmax(0,1fr))}}
.meta-strip dt{font-size:12.5px;color:var(--muted);margin-bottom:2px}
.meta-strip dd{font-size:15px;font-weight:600;color:var(--ink)}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);background:var(--canvas);box-shadow:var(--sh-2)}
.hero-visual figcaption{font-size:13px;color:var(--muted);margin-top:12px}

/* feature rows */
.feature-row{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:900px){.feature-row{grid-template-columns:1fr 1fr;gap:56px}}
@media (min-width:900px){.feature-row.reverse .feature-copy{order:2}.feature-row.reverse .feature-media{order:1}}
.feature-row + .feature-row{margin-top:72px}
@media (max-width:899px){.feature-row + .feature-row{margin-top:52px}}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);background:var(--canvas);box-shadow:var(--sh-1)}
.feature-copy h3{font-size:22px;margin-bottom:14px;letter-spacing:-.01em}
.feature-copy p{color:var(--muted);max-width:640px}
.spec-list{margin-top:22px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:#fff}
.spec-list li{display:flex;justify-content:space-between;gap:16px;padding:13px 18px;font-size:14px;border-bottom:1px solid var(--line)}
.spec-list li:last-child{border-bottom:0}
.spec-list li span:first-child{color:var(--muted)}
.spec-list li span:last-child{color:var(--ink);font-weight:600}

/* shots carousel */
.shots-zone{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.shot-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 0 12px}
.shot-card{flex:0 0 84%;scroll-snap-align:start}
@media (min-width:700px){.shot-card{flex:0 0 calc((100% - 20px)/1.8)}}
@media (min-width:1024px){.shot-card{flex:0 0 calc((100% - 40px)/2.4)}}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);background:var(--canvas);border:1px solid var(--line)}
.shot-card figcaption{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.7}
.shot-card strong{display:block;color:var(--ink);font-size:15px;margin-bottom:2px}
.shot-dots{display:flex;gap:8px;justify-content:center;margin-top:20px}
.shot-dots i{width:7px;height:7px;border-radius:50%;background:var(--line)}
.shot-dots i.on{background:var(--brand);width:20px;border-radius:4px}

/* requirements */
.req-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:720px){.req-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.req-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 22px 20px;box-shadow:var(--sh-1);transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease)}
.req-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#CFE0DA}
.req-card h3{font-size:17px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.req-card h3 svg{color:var(--brand);flex-shrink:0}
.req-card dl{display:grid;gap:9px}
.req-card dl div{display:flex;justify-content:space-between;gap:14px;font-size:14px;padding-bottom:9px;border-bottom:1px dashed var(--line)}
.req-card dl div:last-child{border-bottom:0;padding-bottom:0}
.req-card dt{color:var(--muted)}
.req-card dd{color:var(--ink);font-weight:600;text-align:right}

/* reviews */
.review-wall{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px}
.review-card{flex:0 0 84%;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
@media (min-width:768px){
  .review-wall{display:block;columns:2;column-gap:20px;overflow:visible;padding-bottom:0}
  .review-card{flex:none;margin-bottom:20px;break-inside:avoid}
}
@media (min-width:1024px){.review-wall{columns:3}}
.review-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.avatar{width:38px;height:38px;border-radius:50%;background:#EAF6F2;color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:15px;flex-shrink:0}
.review-name{font-size:14px;font-weight:600;color:var(--ink);line-height:1.4}
.stars{color:var(--warm);font-size:13px;letter-spacing:2px;line-height:1.4}
.review-card p{font-size:14.5px;color:var(--text);line-height:1.8;margin-bottom:14px}
.tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:#EAF6F2;color:var(--brand);font-size:12.5px;font-weight:600}

/* downloads */
.dl-zone{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dl-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1120px){.dl-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.dl-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease)}
.dl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#CFE0DA}
.dl-card.primary{border-color:var(--action);box-shadow:0 0 0 1px var(--action),var(--sh-1)}
.dl-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
.dl-os{font-size:18px;font-weight:700;color:var(--ink)}
.dl-note{font-size:13px;color:var(--muted);margin-bottom:16px}
.dl-specs{display:grid;gap:7px;font-size:13px;margin-bottom:20px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.dl-specs div{display:flex;justify-content:space-between;gap:12px}
.dl-specs dt{color:var(--muted);flex-shrink:0}
.dl-specs dd{color:var(--ink);font-weight:600;overflow-wrap:anywhere;text-align:right;font-size:12.5px}
.dl-card .btn{margin-top:auto;width:100%}
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:#EAF6F2;color:var(--brand);font-size:12.5px;font-weight:600;white-space:nowrap}
.badge-warm{background:#FDF3E3;color:#B0731A}

/* news */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:700px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease)}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#CFE0DA}
.news-link{display:flex;flex-direction:column;gap:10px;height:100%;padding:22px}
.news-link h3{font-size:16.5px;line-height:1.55;letter-spacing:-.005em}
.news-link p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:48px 24px;text-align:center;color:var(--muted);font-size:14.5px}
.empty-state svg{margin:0 auto 12px;color:#C3D3CE}

/* faq */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FAFCFB}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;border-top:1px solid var(--line);padding-top:16px}

/* cta band */
.cta-band{position:relative;background:var(--ink) url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#E7F2EF;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,43,38,.94) 0%,rgba(11,43,38,.82) 55%,rgba(11,43,38,.68) 100%)}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:28px;align-items:center;padding:64px 0}
@media (min-width:900px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;gap:48px;padding:72px 0}}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px;letter-spacing:-.01em}
.cta-inner p{color:#BFD9D3;font-size:15px;max-width:620px;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{background:var(--ink);color:#A9C4BE;font-size:14px}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px;padding:64px 0 40px}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand .logo-mark{background:rgba(31,200,160,.16)}
.footer-about p{color:#9DBAB4;line-height:1.85;font-size:14px;max-width:380px}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col li{margin-bottom:11px}
.footer-col a{color:#A9C4BE;transition:color var(--ease)}
.footer-col a:hover{color:var(--action)}
.footer-mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;color:#7FA39C}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;font-size:13px;color:#8FB0AA}
.footer-bottom a{color:#8FB0AA}
.footer-bottom a:hover{color:var(--action)}
.to-top{display:inline-flex;align-items:center;gap:6px;color:#CFE7E0}
.to-top:hover{color:var(--action)}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .dot{animation:none;opacity:1}
}

/* roulang page: article */
:root{
  --ink:#0B2B26;
  --brand:#0F6B5C;
  --action:#1FC8A0;
  --action-deep:#17b992;
  --warm:#E9A23B;
  --canvas:#F5F7F5;
  --surface:#FFFFFF;
  --line:#E1E6E3;
  --text:#1E2A28;
  --muted:#5A6B67;
  --radius-card:14px;
  --radius-big:18px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(11,43,38,.06);
  --shadow-hover:0 10px 24px rgba(11,43,38,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--canvas);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand);}
button,input,select{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.shell{max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);letter-spacing:0;}
.no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
.no-scrollbar::-webkit-scrollbar{display:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);}
.brandbar{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding-top:12px;padding-bottom:12px;background:var(--ink);
  max-width:1200px;
}
.site-header .brandbar{max-width:1200px;}
.brandbar{padding-left:24px;padding-right:24px;}
.logo{display:inline-flex;align-items:center;gap:9px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.logo:hover{color:#fff;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:rgba(31,200,160,.14);border:1px solid rgba(31,200,160,.28);flex:none;
}
.brand-tools{display:flex;align-items:center;gap:10px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  border-radius:var(--radius-btn);background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);transition:border-color 180ms ease,background 180ms ease;
}
.search-box:focus-within{border-color:var(--action);background:rgba(255,255,255,.12);}
.search-box input{
  width:190px;border:0;background:transparent;color:#fff;font-size:14px;outline:none;
}
.search-box input::placeholder{color:rgba(255,255,255,.55);}
.select-ver{
  height:40px;padding:0 10px;border-radius:var(--radius-btn);font-size:14px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;
  transition:border-color 180ms ease;
}
.select-ver:hover{border-color:rgba(31,200,160,.6);}
.select-ver option{color:var(--text);}
.channelbar{background:var(--surface);border-bottom:1px solid var(--line);}
.channelnav{display:flex;align-items:center;gap:30px;overflow-x:auto;padding-top:0;padding-bottom:0;}
.channelnav a{
  position:relative;padding:15px 0;font-size:15px;color:var(--muted);white-space:nowrap;
  border-bottom:2px solid transparent;transition:color 180ms ease,border-color 180ms ease;
}
.channelnav a:hover{color:var(--ink);}
.channelnav a.active{color:var(--ink);font-weight:600;border-bottom-color:var(--brand);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
}
.btn-primary{background:var(--action);color:var(--ink);}
.btn-primary:hover{background:var(--action-deep);color:var(--ink);transform:translateY(-1px);box-shadow:0 8px 18px rgba(31,200,160,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand);background:rgba(15,107,92,.05);color:var(--brand);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--radius-btn);}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.link-more span{transition:transform 180ms ease;}
.link-more:hover{color:var(--brand);}
.link-more:hover span{transform:translateX(3px);}

/* ---------- breadcrumb + hero ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.breadcrumb a{color:var(--muted);transition:color 180ms ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#B8C3C0;}
.breadcrumb .current{
  color:var(--text);font-weight:500;max-width:460px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-hero{
  position:relative;padding:44px 0 40px;border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(245,247,245,.94),rgba(245,247,245,.99));
}
.article-hero .shell{position:relative;z-index:1;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(15,107,92,.08);color:var(--brand);font-size:13px;font-weight:600;
}
.article-hero h1{
  font-size:clamp(27px,3.6vw,40px);line-height:1.35;font-weight:700;
  margin:16px 0 18px;max-width:920px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--muted);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C4CFCC;display:inline-block;}
.article-meta time{font-family:var(--font-mono);}

/* ---------- article body ---------- */
.article-main{padding:44px 0 0;}
.article-facts{
  max-width:760px;margin:0 auto 32px;padding:16px 20px;display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  font-size:13.5px;color:var(--muted);
}
.article-facts strong{color:var(--ink);font-weight:600;}
.article-facts .mono{font-family:var(--font-mono);}
.article-body{
  max-width:760px;margin:0 auto;color:var(--text);
  font-size:16px;line-height:1.85;letter-spacing:.01em;
}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:1.15em 0;}
.article-body h2{
  font-size:26px;line-height:1.4;font-weight:700;margin:2em 0 .8em;
  padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:20px;font-weight:600;margin:1.7em 0 .6em;color:var(--ink);}
.article-body h2::after,.article-body h3::after{
  content:"#";margin-left:8px;font-weight:400;color:var(--brand);opacity:0;transition:opacity 180ms ease;
}
.article-body h2:hover::after,.article-body h3:hover::after{opacity:.55;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--ink);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body ul,.article-body ol{margin:1.15em 0;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.5em 0;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:rgba(15,107,92,.05);border-radius:0 var(--radius-card) var(--radius-card) 0;color:var(--muted);
}
.article-body blockquote p{margin:.4em 0;}
.article-body img{
  width:100%;height:auto;border-radius:var(--radius-card);margin:1.7em auto;
  background:var(--canvas);object-fit:cover;
}
.article-body figure{margin:1.8em 0;}
.article-body figure img{margin:0 0 10px;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-body th{background:#EEF3F1;color:var(--ink);font-weight:600;white-space:nowrap;}
.article-body tr:nth-child(even) td{background:#FAFCFB;}
.article-body pre{
  margin:1.6em 0;padding:18px 20px;border-radius:var(--radius-card);overflow-x:auto;
  background:var(--ink);color:#D8F3EA;font-family:var(--font-mono);font-size:14px;line-height:1.7;
}
.article-body code{
  font-family:var(--font-mono);font-size:.92em;padding:2px 6px;border-radius:6px;
  background:rgba(15,107,92,.08);color:var(--brand);
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.empty-state{
  text-align:center;padding:64px 26px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-big);box-shadow:var(--shadow-card);
}
.empty-state h2{font-size:22px;margin-bottom:12px;padding:0;border:0;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:24px;}

/* ---------- article end ---------- */
.article-end{max-width:760px;margin:44px auto 0;padding-top:28px;border-top:1px solid var(--line);}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13px;color:var(--muted);
  transition:border-color 180ms ease,color 180ms ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);}
.article-end .link-more{margin-top:20px;}

.pager{max-width:760px;margin:36px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.pager-item{
  display:block;padding:18px 20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);transition:border-color 180ms ease,box-shadow 180ms ease,transform 180ms ease;
}
.pager-item:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.pager-item.next{text-align:right;}
.pager-label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;}
.pager-title{display:block;font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6;}

/* ---------- related ---------- */
.related{padding:64px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px;}
.section-head h2{font-size:24px;font-weight:700;}
.section-desc{font-size:14px;color:var(--muted);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:box-shadow 180ms ease,transform 180ms ease,border-color 180ms ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#D3DBD8;}
.card-thumb{aspect-ratio:16/10;background:var(--canvas);overflow:hidden;}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:18px;}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;}
.card-body p{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:12px;font-size:13px;color:var(--muted);font-family:var(--font-mono);}

/* ---------- cta band ---------- */
.cta-band{margin:72px 0 0;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--radius-big);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,43,38,.95),rgba(11,43,38,.78));
}
.cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-copy h2{color:#fff;font-size:26px;line-height:1.4;}
.cta-copy p{color:rgba(255,255,255,.76);font-size:15px;margin-top:10px;}
.cta-copy .mono{font-family:var(--font-mono);font-size:13px;color:rgba(255,255,255,.62);display:block;margin-top:12px;}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff;}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff;}

/* ---------- footer ---------- */
.site-footer{margin-top:0;background:var(--ink);color:rgba(255,255,255,.72);padding:56px 0 24px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:inline-flex;align-items:center;gap:9px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.footer-brand:hover{color:#fff;}
.footer-about p{font-size:14px;line-height:1.8;max-width:390px;color:rgba(255,255,255,.66);}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-col li{margin-bottom:10px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.7);transition:color 180ms ease;}
.footer-col a:hover{color:var(--action);}
.footer-mono{font-family:var(--font-mono);font-size:13px;color:rgba(255,255,255,.55);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{color:rgba(255,255,255,.72);transition:color 180ms ease;}
.to-top:hover{color:var(--action);}
.to-top span{display:inline-block;transition:transform 180ms ease;}
.to-top:hover span{transform:translateY(-2px);}

/* ---------- motion ---------- */
.fade-up{animation:fadeUp .55s ease both;}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:none;}}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .shell{padding:0 22px;}
  .brandbar{padding-left:22px;padding-right:22px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .channelnav{gap:24px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .shell{padding:0 20px;}
  .brandbar{padding-left:20px;padding-right:20px;gap:12px;}
  .search-box{display:none;}
  .select-ver{display:none;}
  .channelnav{gap:20px;}
  .channelnav a{font-size:14.5px;padding:13px 0;}
  .article-hero{padding:32px 0 30px;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .article-main{padding:32px 0 0;}
  .article-facts{margin-bottom:24px;padding:14px 16px;gap:8px 18px;}
  .pager{grid-template-columns:1fr;}
  .pager-item.next{text-align:left;}
  .related{padding:48px 0 0;}
  .related-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-band{margin:52px 0 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:32px 22px;}
  .cta-copy h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .site-footer{padding:44px 0 20px;}
}
@media (max-width:519px){
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .article-hero h1{font-size:24px;}
  .breadcrumb .current{max-width:220px;}
  .article-meta{font-size:13px;gap:8px 16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* roulang page: category1 */
:root{
    --ink:#0B2B26;
    --brand:#0F6B5C;
    --action:#1FC8A0;
    --warm:#E9A23B;
    --canvas:#F5F7F5;
    --surface:#FFFFFF;
    --line:#E1E6E3;
    --text:#1E2A28;
    --muted:#5A6B67;
    --r-card:14px;
    --r-lg:18px;
    --r-btn:10px;
    --sh-1:0 1px 2px rgba(11,43,38,.06);
    --sh-2:0 10px 24px rgba(11,43,38,.10);
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  html body{
    margin:0;
    background:var(--canvas);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  html h1,html h2,html h3,html p,html ul,html ol{margin:0}
  html img{max-width:100%;display:block;height:auto}
  html a{color:inherit;text-decoration:none}
  html button{font:inherit}
  .shell{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:1024px){.shell{padding-left:24px;padding-right:24px}}
  .no-scrollbar{scrollbar-width:none;-ms-overflow-style:none}
  .no-scrollbar::-webkit-scrollbar{display:none}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .mono{font-family:var(--mono)}

  /* ---------- 头部 ---------- */
  .site-header{position:sticky;top:0;z-index:60}
  .brandbar{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:64px;background:var(--ink);color:#fff;
    box-shadow:0 0 0 100vmax var(--ink);
    clip-path:inset(0 -100vmax);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.01em;color:#fff;white-space:nowrap}
  .logo-mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:9px;background:rgba(31,200,160,.14);border:1px solid rgba(31,200,160,.35);flex:0 0 auto}
  .brand-tools{display:flex;align-items:center;gap:10px}
  .search-box{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:var(--r-btn);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}
  .search-box input{width:186px;background:transparent;border:0;outline:0;color:#fff;font-size:13.5px}
  .search-box input::placeholder{color:rgba(255,255,255,.52)}
  .select-ver{height:38px;padding:0 10px;border-radius:var(--r-btn);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#fff;font-size:13.5px;outline:none}
  .select-ver option{color:#1E2A28}
  .channelbar{background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 0 0 100vmax var(--surface);clip-path:inset(0 -100vmax)}
  .channelnav{display:flex;align-items:center;gap:30px;overflow-x:auto}
  .channelnav a{position:relative;padding:15px 0;border-bottom:2px solid transparent;font-size:15px;color:var(--muted);white-space:nowrap;transition:color 180ms ease,border-color 180ms ease}
  .channelnav a:hover{color:var(--brand)}
  .channelnav a.active{color:var(--ink);font-weight:600;border-bottom-color:var(--brand)}
  @media (max-width:1024px){
    .channelnav{gap:22px}
    .search-box input{width:140px}
  }
  @media (max-width:900px){.search-box{display:none}}
  @media (max-width:640px){
    .brandbar{min-height:58px}
    .select-ver{display:none}
    .channelnav a{font-size:14.5px;padding:13px 0}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform 180ms ease,box-shadow 180ms ease,background-color 180ms ease,color 180ms ease,border-color 180ms ease;
  }
  .btn-primary{background:var(--action);color:var(--ink)}
  .btn-primary:hover{background:#18b795;transform:translateY(-1px);box-shadow:0 8px 18px rgba(31,200,160,.28)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(15,107,92,.06)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px}
  .btn-text span{transition:transform 180ms ease}
  .btn-text:hover span{transform:translateX(3px)}

  /* ---------- 通用板块 ---------- */
  .section{padding:80px 0}
  .section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:760px;margin-bottom:36px}
  .eyebrow{display:inline-block;margin-bottom:10px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--brand)}
  .section-title{font-size:26px;line-height:1.42;font-weight:700;margin-bottom:10px}
  .section-note{font-size:14.5px;color:var(--muted)}
  @media (max-width:1024px){.section{padding:56px 0}}
  @media (max-width:640px){
    .section{padding:40px 0}
    .section-title{font-size:22px}
    html body{font-size:15.5px}
  }

  /* ---------- Hero ---------- */
  .cat-hero{
    border-bottom:1px solid var(--line);
    background-image:linear-gradient(100deg,rgba(245,247,245,.97) 0%,rgba(245,247,245,.9) 50%,rgba(245,247,245,.55) 100%),url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center right;
    background-repeat:no-repeat;
  }
  .cat-hero-inner{padding:52px 0 60px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px;font-size:13.5px;color:var(--muted)}
  .breadcrumb a:hover{color:var(--brand)}
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
  .hero-title{font-size:clamp(28px,3.1vw,40px);line-height:1.32;font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
  .hero-sub{font-size:17px;font-weight:600;color:var(--brand);margin-bottom:12px}
  .hero-text{max-width:620px;color:var(--muted);font-size:15.5px;margin-bottom:22px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
  .hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);background:var(--canvas)}
  .meta-strip{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
    margin-top:26px;background:var(--line);border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;
  }
  .meta-item{background:var(--surface);padding:14px 16px}
  .meta-label{font-size:12.5px;color:var(--muted);margin-bottom:4px}
  .meta-value{font-family:var(--mono);font-size:13.5px;font-weight:600;color:var(--ink)}
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:30px}
    .cat-hero-inner{padding:40px 0 44px}
  }
  @media (max-width:640px){.meta-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}

  /* ---------- 平台下载 ---------- */
  .plat-list{display:flex;flex-direction:column;gap:20px}
  .plat-row{
    display:grid;grid-template-columns:320px minmax(0,1fr);gap:24px;
    padding:20px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-lg);box-shadow:var(--sh-1);
    transition:box-shadow 180ms ease,transform 180ms ease,border-color 180ms ease;
  }
  .plat-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D3DBD6}
  .plat-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);background:var(--canvas)}
  .plat-title{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:19px;font-weight:700;margin-bottom:8px}
  .plat-desc{max-width:740px;font-size:15px;color:var(--muted);margin-bottom:14px}
  .plat-params{display:flex;flex-wrap:wrap;gap:8px 12px;margin-bottom:16px}
  .param{font-family:var(--mono);font-size:12.5px;color:var(--ink);background:var(--canvas);border:1px solid var(--line);border-radius:8px;padding:5px 10px}
  .plat-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
  .tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;background:rgba(15,107,92,.1);color:var(--brand);font-size:12.5px;font-weight:600}
  .tag-warm{background:rgba(233,162,59,.18);color:#9A6208}
  @media (max-width:900px){.plat-row{grid-template-columns:260px minmax(0,1fr);gap:18px}}
  @media (max-width:700px){.plat-row{grid-template-columns:1fr}}

  /* ---------- 图文分栏 ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
  .split+.split{margin-top:56px}
  .split.reverse .split-media{order:2}
  .split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1);background:var(--canvas)}
  .split h3{font-size:20px;font-weight:700;margin-bottom:10px}
  .split p{font-size:15px;color:var(--muted);margin-bottom:16px;max-width:640px}
  .spec-list{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
  .spec-list li{display:flex;justify-content:space-between;gap:16px;background:var(--surface);padding:12px 16px;font-size:14.5px}
  .spec-list li span:first-child{color:var(--muted)}
  .spec-list li span:last-child{font-family:var(--mono);font-weight:600;color:var(--ink);text-align:right}
  @media (max-width:900px){
    .split{grid-template-columns:1fr;gap:24px}
    .split.reverse .split-media{order:0}
    .split+.split{margin-top:40px}
  }

  /* ---------- 场景卡 ---------- */
  .scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
  .scene-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--sh-1);
    transition:box-shadow 180ms ease,transform 180ms ease;
  }
  .scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
  .scene-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
  .scene-card p{font-size:14.5px;color:var(--muted);margin-bottom:14px}
  .scene-card .tag{margin-right:6px}
  @media (max-width:900px){.scene-grid{grid-template-columns:1fr}}

  /* ---------- 步骤 ---------- */
  .steps{border-left:2px solid var(--line);margin-left:8px;padding-left:0}
  .step{position:relative;padding:0 0 30px 28px}
  .step:last-child{padding-bottom:0}
  .step::before{
    content:"";position:absolute;left:-9px;top:9px;width:16px;height:16px;border-radius:50%;
    background:var(--brand);border:3px solid var(--canvas);
  }
  .step-num{font-family:var(--mono);font-size:12.5px;font-weight:700;color:var(--brand);margin-bottom:4px}
  .step h3{font-size:17px;font-weight:700;margin-bottom:6px}
  .step p{font-size:14.5px;color:var(--muted);max-width:660px}

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 4px;cursor:pointer;font-size:16.5px;font-weight:600;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-plus{
    flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
    width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
    color:var(--brand);font-size:16px;line-height:1;
    transition:transform 200ms ease,border-color 200ms ease,background-color 200ms ease;
  }
  .faq-item summary:hover .faq-plus{border-color:var(--brand);background:rgba(15,107,92,.06)}
  .faq-item[open] .faq-plus{transform:rotate(45deg)}
  .faq-a{max-width:760px;padding:0 4px 22px;font-size:15px;color:var(--muted)}

  /* ---------- CTA ---------- */
  .cta-band{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
    background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--action);
    border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);
  }
  .cta-band h2{font-size:22px;font-weight:700;margin-bottom:8px}
  .cta-band p{font-size:15px;color:var(--muted);max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

  /* ---------- 推荐 ---------- */
  .rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
  .rec-card{
    display:block;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
    transition:box-shadow 180ms ease,transform 180ms ease;
  }
  .rec-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
  .rec-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--canvas)}
  .rec-body{padding:16px 18px 20px}
  .rec-body h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
  .rec-body p{font-size:14.5px;color:var(--muted)}
  .back-home{margin-top:28px;text-align:center}
  @media (max-width:900px){.rec-grid{grid-template-columns:1fr}}

  /* ---------- 页脚 ---------- */
  .site-footer{margin-top:0;background:var(--ink);color:rgba(255,255,255,.74);padding-top:56px}
  .footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:12px;color:#fff;font-size:17px;font-weight:700}
  .footer-about p{font-size:14.5px;line-height:1.82;margin:0}
  .footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px}
  .footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
  .footer-col a{font-size:14.5px;transition:color 180ms ease}
  .footer-col a:hover{color:var(--action)}
  .footer-mono{font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.6)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
    border-top:1px solid rgba(255,255,255,.12);
    padding-top:18px;padding-bottom:22px;font-size:13.5px;
  }
  .to-top{transition:color 180ms ease}
  .to-top:hover{color:var(--action)}
  @media (max-width:900px){.footer-top{grid-template-columns:1fr 1fr}}
  @media (max-width:560px){.footer-top{grid-template-columns:1fr;gap:26px}}

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: category2 */
:root{
    --ink:#0B2B26;
    --brand:#0F6B5C;
    --action:#1FC8A0;
    --warm:#E9A23B;
    --canvas:#F5F7F5;
    --surface:#FFFFFF;
    --line:#E1E6E3;
    --text:#1E2A28;
    --muted:#5A6B67;
    --radius-card:14px;
    --radius-big:18px;
    --radius-btn:10px;
    --shadow-soft:0 1px 2px rgba(11,43,38,.06);
    --shadow-lift:0 10px 24px rgba(11,43,38,.10);
    --shell:1200px;
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--canvas);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input,select{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,dl,dd,figure{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
  .no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}

  .shell{
    width:100%;
    max-width:var(--shell);
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  /* ---------- 顶部品牌行 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 2px rgba(11,43,38,.04);
  }
  .brandbar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding-top:14px;
    padding-bottom:14px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:19px;
    font-weight:700;
    color:var(--ink);
    letter-spacing:.01em;
    white-space:nowrap;
  }
  .logo-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:30px;
    height:30px;
    border-radius:9px;
    background:var(--ink);
  }
  .brand-tools{
    display:flex;
    align-items:center;
    gap:12px;
    min-width:0;
  }
  .search-box{
    display:flex;
    align-items:center;
    gap:8px;
    height:40px;
    padding:0 12px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:var(--canvas);
    transition:border-color 180ms ease,box-shadow 180ms ease;
  }
  .search-box:focus-within{
    border-color:var(--brand);
    box-shadow:0 0 0 3px rgba(15,107,92,.12);
  }
  .search-box input{
    width:168px;
    border:0;
    background:transparent;
    outline:none;
    font-size:13.5px;
    color:var(--text);
  }
  .search-box input::placeholder{color:#93a3a0;}
  .select-ver{
    height:40px;
    padding:0 10px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:var(--surface);
    font-size:13.5px;
    color:var(--text);
    cursor:pointer;
    transition:border-color 180ms ease;
  }
  .select-ver:hover{border-color:var(--brand);}

  /* ---------- 频道导航行 ---------- */
  .channelbar{
    border-top:1px solid var(--line);
    background:var(--surface);
  }
  .channelnav{
    display:flex;
    align-items:center;
    gap:28px;
    overflow-x:auto;
    padding-top:2px;
    padding-bottom:2px;
  }
  .channelnav a{
    position:relative;
    flex:0 0 auto;
    padding:11px 0 13px;
    font-size:15px;
    color:var(--muted);
    border-bottom:2px solid transparent;
    transition:color 180ms ease,border-color 180ms ease;
  }
  .channelnav a:hover{color:var(--brand);}
  .channelnav a.active{
    color:var(--ink);
    font-weight:600;
    border-bottom-color:var(--brand);
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 22px;
    border:1px solid transparent;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    white-space:nowrap;
    transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
  }
  .btn-primary{background:var(--action);color:var(--ink);}
  .btn-primary:hover{background:#17b18d;transform:translateY(-1px);box-shadow:var(--shadow-lift);}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-soft);}
  .btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--brand);background:#EAF6F2;transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-sm{height:40px;padding:0 16px;font-size:13.5px;}
  .btn-lg{height:52px;padding:0 26px;font-size:16px;}
  .btn-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14.5px;
    font-weight:600;
    color:var(--brand);
  }
  .btn-link svg{transition:transform 180ms ease;}
  .btn-link:hover svg{transform:translateX(3px);}

  /* ---------- 徽章与标签 ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:3px 10px;
    border-radius:999px;
    background:#E7F5F0;
    color:var(--brand);
    font-size:12.5px;
    font-weight:600;
    line-height:1.7;
  }
  .badge-warm{background:#FCF1DD;color:#A56A12;}
  .badge-ink{background:rgba(255,255,255,.10);color:#BFE9DD;}
  .mono{font-family:var(--mono);font-size:.92em;letter-spacing:0;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    overflow:hidden;
    background:var(--ink);
    color:#EAF3F0;
    padding:64px 0 72px;
  }
  .hero-bg{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    opacity:.34;
  }
  .hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(100deg,rgba(11,43,38,.94) 0%,rgba(11,43,38,.82) 46%,rgba(15,107,92,.62) 100%);
  }
  .hero-grid{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:1.06fr .94fr;
    gap:44px;
    align-items:center;
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:9px;
    font-size:13px;
    color:#9DBBB4;
    margin-bottom:16px;
  }
  .breadcrumb a:hover{color:var(--action);}
  .breadcrumb span[aria-current]{color:#D9EAE5;}
  .hero h1{
    font-size:38px;
    line-height:1.35;
    font-weight:700;
    color:#FFFFFF;
    letter-spacing:.01em;
  }
  .hero-sub{
    margin-top:16px;
    max-width:620px;
    font-size:16.5px;
    line-height:1.85;
    color:#C6DBD5;
  }
  .hero-cta{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    margin-top:26px;
  }
  .hero .btn-ghost{
    background:rgba(255,255,255,.06);
    border-color:rgba(255,255,255,.28);
    color:#EAF3F0;
  }
  .hero .btn-ghost:hover{
    background:rgba(31,200,160,.16);
    border-color:var(--action);
    color:#FFFFFF;
  }
  .meta-row{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:16px;
    margin-top:30px;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.16);
  }
  .meta-row dt{
    font-size:12.5px;
    color:#93B2AB;
    letter-spacing:.04em;
  }
  .meta-row dd{
    margin-top:4px;
    font-family:var(--mono);
    font-size:15px;
    color:#EAF3F0;
  }
  .hero-figure{
    border-radius:var(--radius-big);
    overflow:hidden;
    background:#0A241F;
    box-shadow:0 18px 40px rgba(3,18,15,.42);
    aspect-ratio:16/10;
  }
  .hero-figure img{
    width:100%;
    height:100%;
    object-fit:cover;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:80px 0;}
  .section-tight{padding:56px 0;}
  .section-dark{
    background:var(--ink);
    color:#DCEAE6;
  }
  .section-head{
    max-width:760px;
    margin-bottom:36px;
  }
  .eyebrow{
    display:inline-block;
    font-size:12.5px;
    letter-spacing:.14em;
    color:var(--brand);
    font-weight:600;
    margin-bottom:10px;
  }
  .section-dark .eyebrow{color:var(--action);}
  h2{
    font-size:26px;
    line-height:1.45;
    font-weight:700;
    color:var(--ink);
  }
  .section-dark h2{color:#FFFFFF;}
  .section-desc{
    margin-top:12px;
    font-size:14.5px;
    color:var(--muted);
    line-height:1.85;
  }
  .section-dark .section-desc{color:#A9C4BE;}
  h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--ink);}

  /* ---------- 实时状态条 ---------- */
  .status-strip{
    background:var(--ink);
    color:#D8E9E4;
    border-radius:var(--radius-big);
    padding:26px 28px;
    box-shadow:var(--shadow-soft);
  }
  .status-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:22px;
  }
  .status-item{position:relative;padding-left:16px;}
  .status-item::before{
    content:"";
    position:absolute;
    left:0;
    top:8px;
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--action);
    box-shadow:0 0 0 4px rgba(31,200,160,.16);
  }
  .status-item.is-warm::before{background:var(--warm);box-shadow:0 0 0 4px rgba(233,162,59,.18);}
  .status-item.is-idle::before{background:#6C8781;box-shadow:0 0 0 4px rgba(108,135,129,.18);}
  .status-item dt{font-size:12.5px;color:#94B4AD;letter-spacing:.04em;}
  .status-item dd{
    margin-top:6px;
    font-family:var(--mono);
    font-size:15px;
    color:#FFFFFF;
  }
  .status-item p{
    margin-top:4px;
    font-size:13px;
    color:#9FBEB8;
    line-height:1.7;
  }
  .status-note{
    margin-top:22px;
    padding-top:18px;
    border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;
    color:#93B2AB;
  }

  /* ---------- 卡片网格 ---------- */
  .card-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
  }
  .v-card{
    display:flex;
    flex-direction:column;
    height:100%;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    box-shadow:var(--shadow-soft);
    transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
  }
  .v-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-lift);
    border-color:#CDE2DB;
  }
  .v-card-media{
    position:relative;
    aspect-ratio:16/10;
    background:var(--canvas);
    overflow:hidden;
  }
  .v-card-media img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 300ms ease;
  }
  .v-card:hover .v-card-media img{transform:scale(1.03);}
  .v-card-media .badge{
    position:absolute;
    left:12px;
    top:12px;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(2px);
  }
  .v-card-body{
    display:flex;
    flex-direction:column;
    gap:10px;
    padding:20px;
    flex:1;
  }
  .v-card-body h3{font-size:17.5px;line-height:1.55;}
  .v-card-body p{font-size:14px;color:var(--muted);line-height:1.8;}
  .v-card-foot{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    margin-top:auto;
    padding-top:12px;
    border-top:1px solid var(--line);
    font-family:var(--mono);
    font-size:12.5px;
    color:var(--muted);
  }

  /* ---------- 更新流程时间线 ---------- */
  .steps{
    display:grid;
    gap:0;
    counter-reset:step;
  }
  .step{
    display:grid;
    grid-template-columns:52px 1fr;
    gap:22px;
    padding-bottom:30px;
    position:relative;
  }
  .step:last-child{padding-bottom:0;}
  .step-node{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
  }
  .step-dot{
    width:38px;
    height:38px;
    border-radius:50%;
    background:#E7F5F0;
    color:var(--brand);
    font-family:var(--mono);
    font-size:14px;
    font-weight:700;
    display:flex;
    align-items:center;
    justify-content:center;
    border:2px solid var(--brand);
    z-index:1;
  }
  .step-line{
    flex:1;
    width:2px;
    background:var(--line);
    margin-top:6px;
  }
  .step:last-child .step-line{display:none;}
  .step-content{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:20px 22px;
    box-shadow:var(--shadow-soft);
  }
  .step-content h3{font-size:17.5px;}
  .step-content p{margin-top:8px;font-size:14.5px;color:var(--muted);}
  .step-tip{
    margin-top:12px;
    font-family:var(--mono);
    font-size:12.5px;
    color:var(--brand);
  }

  /* ---------- 版本历史定义组 ---------- */
  .ver-list{
    border:1px solid var(--line);
    border-radius:var(--radius-big);
    background:var(--surface);
    overflow:hidden;
    box-shadow:var(--shadow-soft);
  }
  .ver-row{
    display:grid;
    grid-template-columns:150px 110px 110px 110px 1fr;
    gap:18px;
    align-items:center;
    padding:18px 22px;
    border-bottom:1px solid var(--line);
    transition:background-color 180ms ease;
  }
  .ver-row:last-child{border-bottom:0;}
  .ver-row:hover{background:#F7FBF9;}
  .ver-row.head{
    background:#F1F6F4;
    font-size:12.5px;
    color:var(--muted);
    letter-spacing:.05em;
    font-weight:600;
  }
  .ver-row .v-no{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--ink);}
  .ver-row .v-meta{font-family:var(--mono);font-size:13.5px;color:var(--muted);}
  .ver-row .v-note{font-size:14px;color:var(--muted);}

  /* ---------- 场景卡 ---------- */
  .scene-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:20px;
  }
  .scene-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
    box-shadow:var(--shadow-soft);
    transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
  }
  .scene-card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-lift);
    border-color:#CDE2DB;
  }
  .scene-card h3{font-size:17.5px;margin-bottom:8px;}
  .scene-card p{font-size:14.5px;color:var(--muted);}
  .scene-list{margin-top:14px;display:grid;gap:8px;}
  .scene-list li{
    position:relative;
    padding-left:20px;
    font-size:14px;
    color:var(--text);
  }
  .scene-list li::before{
    content:"";
    position:absolute;
    left:2px;
    top:11px;
    width:7px;
    height:7px;
    border-radius:2px;
    background:var(--brand);
  }

  /* ---------- FAQ ---------- */
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    margin-bottom:12px;
    overflow:hidden;
    transition:border-color 180ms ease,box-shadow 180ms ease;
  }
  .faq-item[open]{
    border-color:#CDE2DB;
    box-shadow:var(--shadow-soft);
  }
  .faq-item summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:18px 22px;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    cursor:pointer;
    list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-icon{
    flex:0 0 auto;
    width:26px;
    height:26px;
    border-radius:50%;
    background:#E7F5F0;
    color:var(--brand);
    display:flex;
    align-items:center;
    justify-content:center;
    transition:transform 180ms ease,background-color 180ms ease;
  }
  .faq-item[open] .faq-icon{transform:rotate(45deg);background:#D3EFE6;}
  .faq-body{
    padding:0 22px 20px;
    font-size:14.5px;
    color:var(--muted);
    line-height:1.9;
  }
  .faq-body strong{color:var(--text);font-weight:600;}

  /* ---------- 底部 CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-big);
    background:var(--ink);
    color:#EAF3F0;
    padding:52px 44px;
  }
  .cta-band-bg{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-3.png');
    background-size:cover;
    background-position:center right;
    opacity:.30;
  }
  .cta-inner{
    position:relative;
    z-index:2;
    display:grid;
    grid-template-columns:1.3fr .7fr;
    gap:32px;
    align-items:center;
  }
  .cta-inner h2{color:#FFFFFF;font-size:26px;}
  .cta-inner p{
    margin-top:12px;
    font-size:15px;
    color:#BFD8D2;
    max-width:640px;
  }
  .cta-actions{
    display:flex;
    flex-wrap:wrap;
    gap:14px;
    justify-content:flex-end;
  }
  .cta-band .btn-ghost{
    background:rgba(255,255,255,.06);
    border-color:rgba(255,255,255,.28);
    color:#EAF3F0;
  }
  .cta-band .btn-ghost:hover{
    background:rgba(31,200,160,.16);
    border-color:var(--action);
    color:#FFFFFF;
  }
  .cta-meta{
    margin-top:18px;
    display:flex;
    flex-wrap:wrap;
    gap:22px;
    font-family:var(--mono);
    font-size:12.5px;
    color:#9FBEB8;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:80px;
    background:var(--ink);
    color:#C4D8D3;
  }
  .footer-top{
    display:grid;
    grid-template-columns:1.7fr 1fr 1fr 1.1fr;
    gap:32px;
    padding-top:56px;
    padding-bottom:36px;
  }
  .footer-brand{
    display:inline-flex;
    align-items:center;
    gap:9px;
    font-size:18px;
    font-weight:700;
    color:#FFFFFF;
  }
  .footer-about p{
    margin-top:14px;
    font-size:14px;
    line-height:1.9;
    color:#9BB6B0;
    max-width:420px;
  }
  .footer-col h3{
    font-size:15px;
    color:#FFFFFF;
    margin-bottom:14px;
    font-weight:600;
  }
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{
    font-size:14px;
    color:#A9C2BC;
    transition:color 180ms ease;
  }
  .footer-col a:hover{color:var(--action);}
  .footer-mono{
    font-family:var(--mono);
    font-size:12.5px;
    color:#8BA6A0;
  }
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    padding-top:18px;
    padding-bottom:28px;
    border-top:1px solid rgba(255,255,255,.10);
    font-size:13px;
    color:#8BA6A0;
  }
  .to-top{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:#C4D8D3;
    transition:color 180ms ease;
  }
  .to-top:hover{color:var(--action);}

  /* ---------- 响应式 ---------- */
  @media (min-width:1024px){
    .shell{padding-left:24px;padding-right:24px;}
  }
  @media (max-width:1024px){
    .hero{padding:52px 0 58px;}
    .hero h1{font-size:32px;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .hero-figure{max-width:640px;}
    .section{padding:60px 0;}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .status-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
    .ver-row{grid-template-columns:1fr 1fr;grid-template-areas:none;gap:8px 18px;}
    .ver-row.head{display:none;}
    .ver-row .v-note{grid-column:1 / -1;}
    .cta-inner{grid-template-columns:1fr;}
    .cta-actions{justify-content:flex-start;}
    .footer-top{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:880px){
    .search-box{display:none;}
  }
  @media (max-width:768px){
    .brandbar{flex-wrap:wrap;gap:14px;}
    .hero h1{font-size:28px;}
    .hero-sub{font-size:15.5px;}
    .meta-row{grid-template-columns:repeat(2,minmax(0,1fr));}
    .scene-grid{grid-template-columns:1fr;}
    .step{grid-template-columns:40px 1fr;gap:16px;}
    .step-dot{width:32px;height:32px;font-size:13px;}
    .cta-band{padding:36px 24px;}
    .section{padding:48px 0;}
  }
  @media (max-width:640px){
    body{font-size:15.5px;}
    .card-grid{grid-template-columns:1fr;}
    .status-grid{grid-template-columns:1fr;}
    .select-ver{display:none;}
    .footer-top{grid-template-columns:1fr;gap:26px;}
    .hero{padding:42px 0 48px;}
    .meta-row{gap:14px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
    --ink:#0B2B26;
    --brand:#0F6B5C;
    --action:#1FC8A0;
    --warm:#E9A23B;
    --canvas:#F5F7F5;
    --surface:#FFFFFF;
    --line:#E1E6E3;
    --text:#1E2A28;
    --muted:#5A6B67;
    --radius-btn:10px;
    --radius-card:14px;
    --radius-big:18px;
    --shadow-soft:0 1px 2px rgba(11,43,38,.06);
    --shadow-lift:0 10px 24px rgba(11,43,38,.10);
    --shell:1200px;
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    color:var(--text);
    background:var(--canvas);
    -webkit-font-smoothing:antialiased;
  }
  img,svg{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  h1,h2,h3,h4,p,ul,ol,dl,dd,dt,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  button,input,select{font:inherit;color:inherit}
  button{background:none;border:0;cursor:pointer}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .mono{font-family:var(--font-mono);letter-spacing:0}
  .no-scrollbar{scrollbar-width:none;-ms-overflow-style:none}
  .no-scrollbar::-webkit-scrollbar{display:none}

  .shell{width:100%;max-width:var(--shell);margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:1024px){ .shell{padding-left:24px;padding-right:24px} }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--radius-btn);
    border:1px solid transparent;font-size:15px;font-weight:600;
    cursor:pointer;white-space:nowrap;
    transition:transform .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  }
  .btn-primary{background:var(--action);color:var(--ink);box-shadow:var(--shadow-soft)}
  .btn-primary:hover{background:#18b892;transform:translateY(-1px);box-shadow:var(--shadow-lift)}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-soft)}
  .btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--brand);background:#EAF6F2;transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;font-weight:600}
  .btn .arrow{transition:transform .18s ease}
  .btn:hover .arrow{transform:translateX(3px)}

  /* ---------- 头部 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(11,43,38,.02)}
  .brandbar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding-top:10px;padding-bottom:10px}
  .logo{display:inline-flex;align-items:center;gap:9px;font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
  .logo-mark{width:30px;height:30px;border-radius:9px;background:var(--ink);display:inline-flex;align-items:center;justify-content:center;flex:0 0 30px}
  .brand-tools{display:flex;align-items:center;gap:10px}
  .search-box{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#FBFCFB;transition:border-color .18s,box-shadow .18s}
  .search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,107,92,.12)}
  .search-box input{border:0;background:transparent;width:176px;font-size:14px;outline:none}
  .search-box input::placeholder{color:#9AA8A4}
  .select-ver{height:38px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#FBFCFB;padding:0 10px;font-size:14px;color:var(--muted);transition:border-color .18s}
  .select-ver:hover{border-color:var(--brand)}

  .channelbar{border-top:1px solid var(--line);background:var(--surface)}
  .channelnav{display:flex;align-items:center;gap:28px;overflow-x:auto;padding-top:12px;padding-bottom:12px}
  .channelnav a{position:relative;white-space:nowrap;font-size:15px;color:var(--muted);padding-bottom:2px;transition:color .18s ease}
  .channelnav a:hover{color:var(--brand)}
  .channelnav a.active{color:var(--ink);font-weight:600}
  .channelnav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-13px;height:2px;background:var(--brand);border-radius:2px}

  @media (max-width:920px){
    .search-box,.select-ver{display:none}
    .brandbar{min-height:58px}
    .logo{font-size:16.5px}
    .channelnav{gap:22px}
  }

  /* ---------- 通用板块 ---------- */
  .section{padding-top:80px;padding-bottom:80px}
  .section-tight{padding-top:56px;padding-bottom:56px}
  @media (max-width:1023px){ .section{padding-top:56px;padding-bottom:56px} }
  @media (max-width:640px){ .section{padding-top:40px;padding-bottom:40px} }

  .section-head{max-width:760px;margin-bottom:34px}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand);background:#EAF6F2;border-radius:999px;padding:5px 12px;margin-bottom:14px}
  .section-head h2{font-size:26px;line-height:1.45;color:var(--ink);font-weight:700}
  .section-head p{margin-top:12px;font-size:15px;color:var(--muted);max-width:720px}
  .mono-note{font-family:var(--font-mono);font-size:13px;color:var(--muted)}

  .pill{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--brand);background:#EAF6F2;border-radius:999px;padding:4px 11px}
  .pill-warm{color:#8A5A0E;background:#FDF3E2}

  /* ---------- 页头 Hero ---------- */
  .page-hero{background:var(--surface);border-bottom:1px solid var(--line);padding-top:26px;padding-bottom:56px}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb span[aria-current]{color:var(--ink);font-weight:600}
  .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}
  .hero-copy h1{font-size:38px;line-height:1.35;letter-spacing:-.01em;color:var(--ink);font-weight:800}
  .hero-sub{margin-top:16px;font-size:17px;line-height:1.75;color:var(--muted);max-width:620px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .meta-row li{font-family:var(--font-mono);font-size:13px;color:var(--ink);background:#EDF3F1;border:1px solid #DCE7E3;border-radius:999px;padding:6px 12px}
  .hero-figure{border-radius:var(--radius-big);overflow:hidden;background:#E7EDEA;box-shadow:var(--shadow-soft)}
  .hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

  @media (max-width:1023px){
    .hero-grid{grid-template-columns:1fr;gap:30px}
    .hero-copy h1{font-size:32px}
    .hero-figure{order:2}
  }
  @media (max-width:640px){
    .hero-copy h1{font-size:26px}
    .hero-sub{font-size:15.5px}
    .hero-actions .btn{width:100%}
  }

  /* ---------- 状态条 ---------- */
  .status-strip{background:var(--ink);color:#CBDAD6}
  .status-inner{display:flex;align-items:center;gap:22px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
  .status-label{font-size:13px;font-weight:600;color:#8FBDB2;letter-spacing:.08em}
  .status-inner ul{display:flex;flex-wrap:wrap;gap:20px}
  .status-inner li{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:13px}
  .status-inner .dot{width:7px;height:7px;border-radius:50%;background:var(--action);box-shadow:0 0 0 3px rgba(31,200,160,.18)}
  .status-time{margin-left:auto;color:#8FBDB2}

  /* ---------- 时间轴 ---------- */
  .timeline{position:relative;margin-top:10px}
  .timeline::before{content:"";position:absolute;left:17px;top:14px;bottom:14px;width:2px;background:linear-gradient(180deg,var(--brand),rgba(15,107,92,.12))}
  .tl-item{position:relative;padding-left:60px;padding-bottom:26px}
  .tl-item:last-child{padding-bottom:0}
  .tl-node{
    position:absolute;left:0;top:2px;width:36px;height:36px;border-radius:50%;
    background:var(--surface);border:2px solid var(--brand);color:var(--brand);
    display:flex;align-items:center;justify-content:center;
    font-family:var(--font-mono);font-size:12.5px;font-weight:700;
  }
  .tl-body{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 24px;box-shadow:var(--shadow-soft);
    transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  }
  .tl-body:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:#CFE3DC}
  .tl-body h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.5}
  .tl-body p{margin-top:10px;font-size:15px;color:var(--muted);max-width:760px}
  .param-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
  .param-list li{
    font-family:var(--font-mono);font-size:13px;color:var(--brand);
    background:#F1F7F5;border:1px solid #DCEAE5;border-radius:8px;padding:6px 11px;
  }
  @media (max-width:640px){
    .timeline::before{left:14px}
    .tl-item{padding-left:46px}
    .tl-node{width:30px;height:30px;font-size:11.5px}
    .tl-body{padding:18px}
    .tl-body h3{font-size:17px}
  }

  /* ---------- 规格对照 ---------- */
  .spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  @media (max-width:1023px){ .spec-grid{grid-template-columns:repeat(2,1fr)} }
  @media (max-width:640px){ .spec-grid{grid-template-columns:1fr} }
  .spec-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-soft);
    transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  }
  .spec-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:#CFE3DC}
  .spec-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line)}
  .spec-head h3{font-size:17px;font-weight:700;color:var(--ink)}
  .spec-list{margin-top:4px}
  .spec-list > div{display:grid;grid-template-columns:74px 1fr;gap:10px;padding:11px 0;border-bottom:1px dashed #EDF1EF}
  .spec-list > div:last-child{border-bottom:0}
  .spec-list dt{font-size:13px;color:var(--muted)}
  .spec-list dd{margin:0;font-size:14px;color:var(--text);line-height:1.7}

  /* ---------- 异常表现列表 ---------- */
  .issue-list{display:grid;gap:14px}
  .issue-item{
    display:grid;grid-template-columns:56px 1fr;gap:18px;align-items:start;
    background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--warm);
    border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-soft);
    transition:box-shadow .18s ease,transform .18s ease;
  }
  .issue-item:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px)}
  .issue-no{font-family:var(--font-mono);font-size:24px;font-weight:700;color:#E3D8C4;line-height:1.2}
  .issue-item h3{font-size:17px;font-weight:700;color:var(--ink)}
  .issue-item p{margin-top:8px;font-size:14.5px;color:var(--muted)}
  .issue-item p strong{color:var(--ink);font-weight:600}
  @media (max-width:640px){
    .issue-item{grid-template-columns:1fr;gap:8px;padding:18px}
    .issue-no{font-size:20px}
  }

  /* ---------- FAQ ---------- */
  .faq-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
  }
  .faq-item[open]{border-color:#BFDCD4;box-shadow:var(--shadow-soft)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:17px 20px;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
    list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;transition:transform .2s ease}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
  .faq-icon::before{left:8px;top:0;width:2px;height:18px}
  .faq-icon::after{top:8px;left:0;width:18px;height:2px}
  .faq-item[open] .faq-icon{transform:rotate(45deg)}
  .faq-body{padding:0 20px 20px;font-size:14.8px;color:var(--muted);border-top:1px solid #EDF1EF;margin-top:0;padding-top:16px}

  /* ---------- CTA ---------- */
  .cta-band{
    background:#EAF6F2;border:1px solid #CFE7DF;border-radius:var(--radius-big);
    padding:38px 40px;display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;
  }
  .cta-band h2{font-size:24px;font-weight:700;color:var(--ink);line-height:1.5}
  .cta-band p{margin-top:10px;font-size:15px;color:var(--brand);max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
  @media (max-width:900px){
    .cta-band{grid-template-columns:1fr;padding:28px 22px}
    .cta-actions{justify-content:flex-start}
    .cta-actions .btn{width:100%}
  }

  /* ---------- 相关入口 ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  @media (max-width:900px){ .rel-grid{grid-template-columns:1fr} }
  .rel-card{
    display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-soft);
    transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  }
  .rel-card:hover{box-shadow:var(--shadow-lift);transform:translateY(-2px);border-color:#CFE3DC}
  .rel-card h3{font-size:16.5px;font-weight:700;color:var(--ink)}
  .rel-card p{margin-top:8px;font-size:14px;color:var(--muted)}
  .rel-card .rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand)}
  .rel-card:hover .rel-more span{transform:translateX(3px)}
  .rel-card .rel-more span{transition:transform .18s ease}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#C4D3CF;margin-top:20px}
  .footer-top{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
    padding-top:60px;padding-bottom:48px;
  }
  .footer-brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:700;color:#FFFFFF;margin-bottom:14px}
  .footer-about p{font-size:14px;line-height:1.9;color:#9FB4AF;max-width:380px}
  .footer-col h3{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:14px;letter-spacing:.04em}
  .footer-col ul li{margin-bottom:10px;font-size:14px}
  .footer-col ul li a{color:#9FB4AF;transition:color .18s ease}
  .footer-col ul li a:hover{color:var(--action)}
  .footer-mono{font-family:var(--font-mono);font-size:13px;color:#8FA5A0}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
    border-top:1px solid rgba(255,255,255,.12);
    padding-top:20px;padding-bottom:26px;font-size:13px;color:#8FA5A0;
  }
  .to-top{display:inline-flex;align-items:center;gap:6px;color:#C4D3CF;transition:color .18s ease}
  .to-top:hover{color:var(--action)}
  @media (max-width:1023px){ .footer-top{grid-template-columns:1fr 1fr;gap:28px} }
  @media (max-width:640px){
    .footer-top{grid-template-columns:1fr;gap:24px;padding-top:44px;padding-bottom:34px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: category4 */
:root{
    --ink:#0B2B26;
    --brand:#0F6B5C;
    --action:#1FC8A0;
    --warm:#E9A23B;
    --canvas:#F5F7F5;
    --surface:#FFFFFF;
    --line:#E1E6E3;
    --text:#1E2A28;
    --muted:#5A6B67;
    --radius-card:14px;
    --radius-big:18px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(11,43,38,.06);
    --shadow-2:0 10px 24px rgba(11,43,38,.10);
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}

  .page{
    margin:0;
    background:var(--canvas);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  .page img{max-width:100%;display:block;border-style:none;}
  .page a{color:inherit;text-decoration:none;}
  .page button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  .page ul,.page ol{margin:0;padding:0;list-style:none;}
  .page p{margin:0;}
  .page h1,.page h2,.page h3,.page h4{margin:0;font-weight:700;color:var(--ink);}
  .page figure{margin:0;}
  .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

  .shell{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  .no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
  .no-scrollbar::-webkit-scrollbar{display:none;}

  /* ============ header ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--surface);
    border-bottom:1px solid var(--line);
  }
  .brandbar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding-top:14px;
    padding-bottom:14px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-weight:700;
    font-size:19px;
    color:var(--ink);
    letter-spacing:.02em;
    white-space:nowrap;
  }
  .logo-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:32px;
    height:32px;
    border-radius:10px;
    background:rgba(15,107,92,.10);
    border:1px solid rgba(15,107,92,.20);
    flex:0 0 auto;
  }
  .brand-tools{display:flex;align-items:center;gap:10px;}
  .search-box{
    display:flex;
    align-items:center;
    gap:8px;
    height:40px;
    padding:0 12px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:var(--surface);
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .search-box input{
    border:0;
    outline:none;
    width:190px;
    font-size:14px;
    background:transparent;
    color:var(--text);
    font-family:inherit;
  }
  .search-box input::placeholder{color:#9AA8A4;}
  .search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,107,92,.10);}
  .select-ver{
    height:40px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:var(--surface);
    padding:0 10px;
    font-size:14px;
    color:var(--text);
    font-family:inherit;
  }
  .select-ver:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  .channelbar{background:var(--surface);border-top:1px solid var(--line);}
  .channelnav{
    display:flex;
    align-items:center;
    gap:4px;
    overflow-x:auto;
    padding-top:0;
    padding-bottom:0;
  }
  .channelnav a{
    position:relative;
    flex:0 0 auto;
    padding:12px 14px;
    font-size:15px;
    color:var(--muted);
    border-bottom:2px solid transparent;
    transition:color .18s ease,border-color .18s ease;
  }
  .channelnav a:hover{color:var(--brand);}
  .channelnav a.active{
    color:var(--ink);
    font-weight:600;
    border-bottom-color:var(--brand);
  }
  .channelnav a:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}

  /* ============ buttons ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    white-space:nowrap;
    transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-primary{
    background:var(--action);
    color:var(--ink);
    box-shadow:var(--shadow-1);
  }
  .btn-primary:hover{background:#17b78f;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--ink);
  }
  .btn-ghost:hover{border-color:var(--brand);background:rgba(31,200,160,.08);}
  .btn-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:auto;
    padding:0;
    font-size:15px;
    font-weight:600;
    color:var(--brand);
  }
  .btn-link svg{transition:transform .18s ease;}
  .btn-link:hover svg{transform:translateX(3px);}
  .btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    border-radius:999px;
    background:rgba(15,107,92,.10);
    color:var(--brand);
    font-size:12.5px;
    font-weight:600;
    padding:5px 12px;
    letter-spacing:.02em;
  }
  .badge-warm{background:rgba(233,162,59,.14);color:#96631A;}

  /* ============ hero ============ */
  .hero{padding:32px 0 0;}
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:6px;
    font-size:13.5px;
    color:var(--muted);
    margin-bottom:16px;
  }
  .breadcrumb a:hover{color:var(--brand);}
  .hero-grid{
    display:grid;
    gap:32px;
    align-items:center;
    padding-bottom:44px;
  }
  .hero-title{
    font-size:32px;
    line-height:1.35;
    letter-spacing:-.01em;
    margin-top:16px;
  }
  .hero-lead{
    margin-top:14px;
    font-size:16px;
    line-height:1.85;
    color:var(--muted);
    max-width:620px;
  }
  .meta-row{
    display:flex;
    flex-wrap:wrap;
    gap:8px 20px;
    margin-top:22px;
    font-size:13.5px;
    color:var(--muted);
  }
  .meta-row b{color:var(--ink);font-weight:600;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-figure{
    position:relative;
    border-radius:var(--radius-big);
    overflow:hidden;
    background:var(--canvas);
    box-shadow:var(--shadow-2);
    aspect-ratio:16 / 10;
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;}

  .statusbar{
    background:var(--surface);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .statusbar-inner{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px 16px;
    padding-top:12px;
    padding-bottom:12px;
    font-size:13.5px;
    color:var(--muted);
  }
  .statusbar-inner b{color:var(--ink);font-weight:600;}
  .dot{
    width:8px;
    height:8px;
    border-radius:999px;
    background:var(--action);
    box-shadow:0 0 0 4px rgba(31,200,160,.18);
    flex:0 0 auto;
  }

  /* ============ sections ============ */
  .section{padding:40px 0;}
  .section-head{max-width:780px;margin-bottom:26px;}
  .eyebrow{
    display:inline-block;
    font-size:12.5px;
    font-weight:700;
    letter-spacing:.10em;
    color:var(--brand);
  }
  .section-title{font-size:24px;line-height:1.45;margin-top:10px;}
  .section-desc{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:720px;}

  /* 安装前确认 */
  .prep-grid{display:grid;gap:20px;align-items:start;}
  .prep-note{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:22px;
    box-shadow:var(--shadow-1);
  }
  .checklist{display:flex;flex-direction:column;gap:0;}
  .checklist li{
    display:flex;
    gap:12px;
    align-items:flex-start;
    padding:14px 0;
    border-bottom:1px solid var(--line);
    font-size:15px;
    line-height:1.8;
  }
  .checklist li:last-child{border-bottom:0;padding-bottom:0;}
  .checklist li:first-child{padding-top:0;}
  .checklist .tick{flex:0 0 auto;margin-top:6px;}
  .checklist strong{color:var(--ink);font-weight:600;}

  .spec-list{display:grid;gap:12px;}
  .spec-card{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:16px 20px;
    box-shadow:var(--shadow-1);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .spec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(15,107,92,.28);}
  .spec-card .spec-label{font-size:14.5px;color:var(--muted);}
  .spec-card .spec-value{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--ink);text-align:right;}

  /* ============ 分平台步骤：tab + rail ============ */
  .layout-rail{display:grid;gap:32px;}
  .rail{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:18px;
    box-shadow:var(--shadow-1);
  }
  .rail h3{font-size:14px;font-weight:700;margin-bottom:10px;}
  .rail nav{display:flex;flex-direction:column;gap:2px;}
  .rail a{
    display:block;
    padding:8px 10px;
    border-radius:8px;
    border-left:2px solid transparent;
    font-size:14px;
    color:var(--muted);
    transition:color .18s ease,background .18s ease,border-color .18s ease;
  }
  .rail a:hover{color:var(--brand);background:rgba(15,107,92,.06);}
  .rail a.active{
    color:var(--ink);
    font-weight:600;
    border-left-color:var(--action);
    background:rgba(31,200,160,.10);
  }
  .rail-note{
    margin-top:14px;
    padding-top:14px;
    border-top:1px solid var(--line);
    font-size:12.5px;
    color:var(--muted);
    line-height:1.7;
  }

  .tabbar{
    display:flex;
    gap:6px;
    overflow-x:auto;
    border-bottom:1px solid var(--line);
    margin-bottom:26px;
  }
  .tab{
    flex:0 0 auto;
    height:46px;
    padding:0 18px;
    border-radius:10px 10px 0 0;
    border-bottom:2px solid transparent;
    font-size:15px;
    font-weight:600;
    color:var(--muted);
    transition:color .18s ease,background .18s ease,border-color .18s ease;
  }
  .tab:hover{color:var(--brand);background:rgba(15,107,92,.06);}
  .tab[aria-selected="true"]{
    color:var(--ink);
    border-bottom-color:var(--brand);
    background:rgba(31,200,160,.10);
  }
  .tab:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}

  .tabpanel[hidden]{display:none;}
  .panel-head{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    margin-bottom:20px;
  }
  .panel-head h3{font-size:19px;}
  .panel-head .path{font-family:var(--mono);font-size:12.5px;color:var(--muted);}

  .steps{position:relative;}
  .steps > li{
    position:relative;
    padding:0 0 28px 46px;
  }
  .steps > li::before{
    content:"";
    position:absolute;
    left:15px;
    top:34px;
    bottom:0;
    width:1px;
    background:var(--line);
  }
  .steps > li:last-child::before{display:none;}
  .steps > li:last-child{padding-bottom:0;}
  .step-num{
    position:absolute;
    left:0;
    top:0;
    width:32px;
    height:32px;
    border-radius:999px;
    background:var(--brand);
    color:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:14px;
    font-weight:700;
    font-family:var(--mono);
  }
  .step-title{font-size:16.5px;font-weight:600;color:var(--ink);}
  .step-desc{margin-top:6px;font-size:15px;color:var(--text);max-width:740px;}
  .step-params{
    display:flex;
    flex-wrap:wrap;
    gap:6px 10px;
    margin-top:10px;
  }
  .step-params span{
    font-family:var(--mono);
    font-size:12.5px;
    color:var(--muted);
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:6px;
    padding:2px 9px;
  }

  /* ============ 异常对照 ============ */
  .dl-grid{display:grid;gap:14px;}
  .dl-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:18px 20px;
    box-shadow:var(--shadow-1);
    transition:box-shadow .18s ease,border-color .18s ease;
  }
  .dl-item:hover{box-shadow:var(--shadow-2);border-color:rgba(15,107,92,.26);}
  .dl-item dt{
    display:flex;
    gap:10px;
    align-items:flex-start;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    line-height:1.6;
  }
  .dl-item dt .flag{color:var(--warm);flex:0 0 auto;margin-top:3px;}
  .dl-item dd{
    margin:8px 0 0 26px;
    font-size:14.5px;
    color:var(--muted);
    line-height:1.8;
  }
  .dl-item dd code{
    font-family:var(--mono);
    font-size:13px;
    background:var(--canvas);
    border:1px solid var(--line);
    border-radius:6px;
    padding:1px 6px;
    color:var(--ink);
  }

  /* ============ 验证区 ============ */
  .verify-grid{display:grid;gap:28px;align-items:center;}
  .verify-figure{
    border-radius:var(--radius-big);
    overflow:hidden;
    background:var(--canvas);
    box-shadow:var(--shadow-2);
    aspect-ratio:16 / 10;
  }
  .verify-figure img{width:100%;height:100%;object-fit:cover;}
  .verify-list{display:flex;flex-direction:column;gap:14px;}
  .verify-item{
    display:flex;
    gap:14px;
    align-items:flex-start;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:18px 20px;
    box-shadow:var(--shadow-1);
  }
  .verify-item .idx{
    flex:0 0 auto;
    width:28px;
    height:28px;
    border-radius:8px;
    background:rgba(15,107,92,.10);
    color:var(--brand);
    font-family:var(--mono);
    font-size:13px;
    font-weight:700;
    display:flex;
    align-items:center;
    justify-content:center;
    margin-top:2px;
  }
  .verify-item h3{font-size:16px;}
  .verify-item p{margin-top:6px;font-size:14.5px;color:var(--muted);}

  /* ============ FAQ ============ */
  .faq-list{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:18px;
    padding:18px 4px;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--ink);
    line-height:1.7;
    transition:color .18s ease;
  }
  .faq-q:hover{color:var(--brand);}
  .faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
  .faq-q .plus{flex:0 0 auto;margin-top:4px;color:var(--brand);transition:transform .2s ease;}
  .faq-q[aria-expanded="true"] .plus{transform:rotate(45deg);}
  .faq-a{
    display:none;
    padding:0 4px 20px;
    font-size:15px;
    color:var(--muted);
    max-width:840px;
  }
  .faq-a.open{display:block;}

  /* ============ CTA ============ */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-big);
    background:var(--ink);
    color:#fff;
    padding:40px 26px;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    opacity:.30;
  }
  .cta-inner{position:relative;}
  .cta-band h2{color:#fff;font-size:24px;line-height:1.45;}
  .cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.82);max-width:660px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
  .cta-band .btn-ghost{
    background:transparent;
    border-color:rgba(255,255,255,.32);
    color:#fff;
  }
  .cta-band .btn-ghost:hover{border-color:var(--action);background:rgba(31,200,160,.14);}
  .cta-meta{
    display:flex;
    flex-wrap:wrap;
    gap:8px 18px;
    margin-top:20px;
    font-family:var(--mono);
    font-size:12.5px;
    color:rgba(255,255,255,.66);
  }

  /* ============ footer ============ */
  .site-footer{background:var(--ink);color:rgba(255,255,255,.78);margin-top:48px;}
  .footer-top{
    display:grid;
    gap:28px;
    padding-top:52px;
    padding-bottom:38px;
  }
  .footer-brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    color:#fff;
    font-weight:700;
    font-size:18px;
    margin-bottom:12px;
  }
  .footer-brand .logo-mark{
    background:rgba(31,200,160,.14);
    border-color:rgba(31,200,160,.28);
  }
  .footer-about p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.70);max-width:420px;}
  .footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.70);transition:color .18s ease;}
  .footer-col a:hover{color:var(--action);}
  .footer-mono{font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.58);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:10px 18px;
    align-items:center;
    justify-content:space-between;
    border-top:1px solid rgba(255,255,255,.12);
    padding-top:18px;
    padding-bottom:26px;
    font-size:13px;
    color:rgba(255,255,255,.58);
  }
  .to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.78);}
  .to-top:hover{color:var(--action);}

  .anchor{scroll-margin-top:130px;}

  /* ============ 响应式 ============ */
  @media (min-width:640px){
    .cta-band{padding:48px 40px;}
  }
  @media (min-width:768px){
    .hero{padding-top:40px;}
    .hero-title{font-size:36px;}
    .section{padding:56px 0;}
    .section-title{font-size:25px;}
    .prep-grid{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:24px;}
    .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .verify-grid{grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:36px;}
    .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));}
  }
  @media (min-width:1024px){
    .shell{padding-left:24px;padding-right:24px;}
    .hero-title{font-size:40px;}
    .section{padding:80px 0;}
    .section-title{font-size:26px;}
    .hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;padding-bottom:56px;}
    .layout-rail{grid-template-columns:minmax(0,1fr) 250px;gap:40px;align-items:start;}
    .rail{position:sticky;top:120px;}
    .footer-top{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;}
  }
  @media (max-width:767px){
    .brandbar{flex-wrap:wrap;}
    .search-box{display:none;}
    .hero-title{font-size:28px;line-height:1.4;}
    .page{font-size:15.5px;}
  }
  @media (max-width:520px){
    .select-ver{max-width:124px;}
    .btn-sm{padding:0 12px;font-size:13.5px;}
    .hero-actions .btn{width:100%;}
    .cta-actions .btn{width:100%;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
  }
  html{scroll-behavior:smooth;}

  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;}
  .reveal.in{opacity:1;transform:none;}