/* roulang page: index */
:root{
  --brand:#22D3EE;
  --brand-press:#0FB6D4;
  --accent:#FF8A4C;
  --ok:#6EE7A8;
  --bg:#070B14;
  --panel:#0E1626;
  --raise:#121D33;
  --line:rgba(255,255,255,.08);
  --line-brand:rgba(34,211,238,.35);
  --text:#E6EEF9;
  --muted:#94A7C4;
  --dim:#64748B;
  --r-card:16px;
  --r-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.28);
  --gap:clamp(16px,2vw,24px);
  --sec:clamp(44px,6vw,88px);

  --bs-primary:#22D3EE;
  --bs-body-bg:#070B14;
  --bs-body-color:#E6EEF9;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-border-radius:14px;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#22D3EE;
  --bs-link-hover-color:#7DE9FA;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:#7DE9FA}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;padding-inline:clamp(16px,4vw,24px);margin-inline:auto}
.section{padding:var(--sec) 0}
.section-tight{padding:clamp(32px,4vw,56px) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:clamp(24px,3vw,40px);flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,2.6vw,34px)}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:60ch}
.eyebrow{display:inline-block;font-size:13px;color:var(--brand);letter-spacing:1.4px;margin-bottom:12px}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .2s ease}
.link-more:hover{border-color:currentColor}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(7,11,20,.78);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:17px;letter-spacing:.3px}
.brand:hover{color:var(--text)}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--brand);color:#04202B;display:grid;place-items:center;font-size:14px;font-weight:800;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{position:relative;color:var(--muted);font-size:15px;font-weight:500;padding:6px 0;transition:color .2s ease}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--brand)}
.nav-tools{display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--muted);display:grid;place-items:center;cursor:pointer;transition:color .2s ease,border-color .2s ease,transform .2s ease}
.icon-btn:hover{color:var(--brand);border-color:var(--line-brand);transform:translateY(-1px)}
.icon-btn svg{width:17px;height:17px}
.nav-toggle{display:none}

/* ---------- 按钮 / 徽章 ---------- */
.rl-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease}
.rl-btn-main{background:var(--brand);color:#04202B;border-color:rgba(34,211,238,.6);box-shadow:0 0 20px rgba(34,211,238,.25)}
.rl-btn-main:hover{background:#4ADDF2;color:#04202B;transform:translateY(-2px);box-shadow:0 0 28px rgba(34,211,238,.48)}
.rl-btn-accent{background:var(--accent);color:#2A1206;border-color:rgba(255,138,76,.55)}
.rl-btn-accent:hover{color:#2A1206;transform:translateY(-2px);box-shadow:0 0 22px rgba(255,138,76,.34)}
.rl-btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-brand)}
.rl-btn-ghost:hover{background:rgba(34,211,238,.08);color:#7DE9FA;transform:translateY(-2px)}
.rl-btn-line{background:transparent;color:var(--text);border-color:var(--line)}
.rl-btn-line:hover{color:var(--brand);border-color:var(--line-brand);transform:translateY(-2px)}
.rl-btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.badge-pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;line-height:1;white-space:nowrap}
.badge-cat{background:rgba(34,211,238,.12);color:var(--brand)}
.badge-ok{background:rgba(110,231,168,.14);color:var(--ok)}
.badge-line{border:1px solid var(--line);color:var(--muted)}
.badge-accent{background:rgba(255,138,76,.14);color:var(--accent)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(48px,7vw,100px) 0 clamp(48px,6vw,84px)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.55}
.hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.88) 0%,rgba(7,11,20,.78) 46%,var(--bg) 100%)}
.hero-grid-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 78%)}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:clamp(24px,4vw,56px);align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);letter-spacing:.6px;margin-bottom:16px}
.kicker::before{content:"";width:22px;height:1px;background:var(--brand);display:inline-block}
.hero h1{font-size:clamp(30px,4.4vw,52px);letter-spacing:.4px;max-width:18ch}
.hero-sub{color:var(--muted);font-size:clamp(16px,1.3vw,18px);margin-top:18px;max-width:34ch;line-height:1.7}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.meta-strip{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.meta-strip li{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-variant-numeric:tabular-nums}
.meta-strip strong{color:var(--text);font-weight:600}
.hero-card{border:1px solid var(--line-brand);border-radius:20px;padding:14px;background:rgba(18,29,51,.55);backdrop-filter:blur(12px);box-shadow:var(--shadow),var(--glow)}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px}
.hero-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 6px 4px;font-size:13px;color:var(--muted)}

/* ---------- 信任指标 ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:clamp(20px,2.4vw,30px) 22px;border-left:1px solid var(--line)}
.trust-item:first-child{border-left:0}
.trust-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.trust-label{font-size:13px;color:var(--muted);margin-top:6px}

/* ---------- 价值卡 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);align-items:start}
.value-card{grid-column:span 2;position:relative;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:26px;overflow:hidden;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.value-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--brand),rgba(34,211,238,0))}
.value-card:hover{transform:translateY(-2px);border-color:var(--line-brand);box-shadow:0 8px 26px rgba(0,0,0,.4)}
.value-icon{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);margin-bottom:18px}
.value-icon svg{width:20px;height:20px}
.value-card h3{font-size:19px;margin-bottom:10px}
.value-card p{color:var(--muted);font-size:14.5px;line-height:1.8}
.value-tag{margin-top:16px;display:inline-flex}

/* ---------- 轮播 ---------- */
.shot-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:clamp(14px,2vw,22px)}
.shot-carousel .carousel-item img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.shot-cap{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:16px;font-size:14px;color:var(--muted);flex-wrap:wrap}
.shot-cap strong{color:var(--text);font-weight:600}
.carousel-indicators{position:static;margin:18px 0 0;gap:8px;justify-content:center}
.carousel-indicators [data-bs-target]{width:26px;height:3px;border-radius:2px;background:rgba(255,255,255,.2);border:0;opacity:1;margin:0;transition:background-color .2s ease,box-shadow .2s ease}
.carousel-indicators .active{background:var(--brand);box-shadow:0 0 12px rgba(34,211,238,.65)}
.carousel-control-prev,.carousel-control-next{width:52px;opacity:.85;transition:opacity .2s ease}
.carousel-control-prev:hover,.carousel-control-next:hover{opacity:1}
.carousel-control-prev-icon,.carousel-control-next-icon{width:13px;height:13px;background-image:none;border-top:2px solid var(--text);border-left:2px solid var(--text)}
.carousel-control-prev-icon{transform:rotate(-45deg)}
.carousel-control-next-icon{transform:rotate(135deg)}

/* ---------- 系统要求 ---------- */
.req-columns{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.req-col{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:26px}
.req-col h3{font-size:19px;display:flex;align-items:center;gap:10px}
.req-col h3 .badge-pill{flex:0 0 auto}
.req-list{margin-top:18px}
.req-list>div{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
.req-list>div:last-child{border-bottom:0;padding-bottom:0}
.req-list dt{margin:0;color:var(--muted);font-weight:400}
.req-list dd{margin:0;color:var(--text);text-align:right;font-variant-numeric:tabular-nums}
.req-note{margin-top:18px;font-size:13px;color:var(--dim);line-height:1.7}

/* ---------- 下载组 ---------- */
.dl-band{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:clamp(22px,3vw,34px)}
.dl-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:22px}
.dl-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.dl-meta strong{color:var(--text);font-weight:600}

/* ---------- 评价墙 ---------- */
.review-wall{columns:3;column-gap:var(--gap)}
.review-card{break-inside:avoid;margin:0 0 var(--gap);border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:22px;position:relative;overflow:hidden;transition:border-color .22s ease,transform .22s ease}
.review-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,rgba(34,211,238,.8),rgba(34,211,238,0))}
.review-card:hover{border-color:var(--line-brand);transform:translateY(-2px)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--raise);border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);font-size:14px;font-weight:700;flex:0 0 auto}
.review-name{font-size:14.5px;font-weight:600}
.review-sub{font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums}
.stars{display:flex;gap:3px;margin:14px 0 10px}
.stars i{width:12px;height:12px;display:block;background:var(--brand);clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%)}
.review-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.review-tags{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}

/* ---------- 资讯列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.post-card{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);overflow:hidden;display:flex;flex-direction:column;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.post-card:hover{transform:translateY(-2px);border-color:var(--line-brand);box-shadow:0 10px 26px rgba(0,0,0,.42)}
.post-thumb{display:block;overflow:hidden}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line);transition:filter .25s ease}
.post-card:hover .post-thumb img{filter:brightness(1.06)}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1}
.post-body h3{font-size:17.5px;margin:12px 0 10px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a{color:var(--text)}
.post-body h3 a:hover{color:var(--brand)}
.post-body p{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--dim);font-variant-numeric:tabular-nums}
.empty-state{grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--panel);padding:52px 24px;text-align:center}
.empty-state svg{width:26px;height:26px;color:var(--brand);margin-bottom:14px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq .accordion-item:has(.accordion-button:not(.collapsed)){box-shadow:inset 3px 0 0 var(--brand),0 0 22px rgba(34,211,238,.16)}
.faq .accordion-button{position:relative;background:transparent;color:var(--text);font-size:16.5px;font-weight:600;padding:22px 46px 22px 18px;box-shadow:none;border-radius:0}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{
  content:"";position:absolute;right:10px;top:50%;width:14px;height:14px;transform:translateY(-50%);
  background-image:linear-gradient(var(--muted),var(--muted)),linear-gradient(var(--muted),var(--muted));
  background-size:14px 2px,2px 14px;background-position:center,center;background-repeat:no-repeat;
  transition:transform .22s ease;
}
.faq .accordion-button:not(.collapsed)::after{background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));transform:translateY(-50%) rotate(45deg)}
.faq .accordion-body{padding:0 46px 24px 18px;color:var(--muted);font-size:15px;line-height:1.85}

/* ---------- 底部 CTA ---------- */
.cta-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:clamp(40px,5vw,64px) 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px)}
.cta-inner p{color:var(--muted);font-size:15px;margin-top:10px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--panel);padding-top:clamp(40px,5vw,64px)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:clamp(24px,4vw,48px)}
.footer-brand p{color:var(--muted);font-size:13.5px;line-height:1.8;margin-top:16px;max-width:34ch}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.4px}
.footer-col li{font-size:13px;color:var(--muted);margin-bottom:10px;line-height:1.7}
.footer-col a{color:var(--muted);font-size:13px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{margin-top:clamp(32px,4vw,52px);border-top:1px solid var(--line);padding:20px 0;font-size:12.5px;color:var(--dim);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .value-grid{grid-template-columns:1fr 1fr}
  .value-card{grid-column:span 1}
  .review-wall{columns:2}
}
@media (max-width:991.98px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero h1{max-width:100%}
  .hero-sub{max-width:100%}
  .nav-inner{height:60px}
  .nav-toggle{display:grid}
  .nav-tools .icon-btn{display:none}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    background:#080D18;flex-direction:column;align-items:stretch;gap:0;
    padding:8px 24px 48px;overflow-y:auto;
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;
    border-top:1px solid var(--line);
  }
  .nav-links.open{opacity:1;transform:none;pointer-events:auto}
  .nav-links a{height:56px;display:flex;align-items:center;font-size:17px;border-bottom:1px solid var(--line);color:var(--text)}
  .nav-links a.active{color:var(--brand)}
  .nav-links a.active::after{display:none}
  .post-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .trust-grid{grid-template-columns:1fr 1fr}
  .trust-item:nth-child(3){border-left:0}
  .trust-item:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:767.98px){
  .req-columns{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .review-wall{columns:1}
  .footer-grid{grid-template-columns:1fr}
  .brand{font-size:15.5px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .dl-meta{gap:8px 16px}
}
@media (max-width:575.98px){
  .value-grid{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:1fr}
  .trust-item{border-left:0;border-top:1px solid var(--line);padding:20px 4px}
  .trust-item:first-child{border-top:0}
  .hero-actions .rl-btn{width:100%}
  .dl-row .rl-btn{width:100%}
  .cta-actions .rl-btn{width:100%}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --panel:#0E1626;
  --panel-2:#121D33;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(34,211,238,.35);
  --text:#E6EEF9;
  --text-2:#94A7C4;
  --text-3:#64748B;
  --primary:#22D3EE;
  --primary-dark:#0FB6D4;
  --accent:#FF8A4C;
  --green:#6EE7A8;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.28);
  --sp-section:88px;
  --bs-primary:#22D3EE;
  --bs-body-bg:#070B14;
  --bs-body-color:#E6EEF9;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:12px;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
button{font:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(34,211,238,.3);color:#fff;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.78);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-size:17px;font-weight:600;letter-spacing:.2px;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,#22D3EE,#0FB6D4);
  color:#04121A;font-weight:700;font-size:16px;flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;color:var(--text-2);font-size:15px;font-weight:500;padding:6px 0;white-space:nowrap;
}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--text);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--primary);border-radius:2px;
}
.nav-tools{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-2);background:rgba(34,211,238,.06);}
.icon-btn svg{width:20px;height:20px;}
.nav-toggle{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  text-decoration:none;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--primary);color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{background:var(--primary-dark);color:#04121A;transform:translateY(-2px);box-shadow:0 0 30px rgba(34,211,238,.42);}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--primary);}
.btn-ghost:hover{background:rgba(34,211,238,.08);color:var(--primary);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;}
.btn-link:hover{color:var(--primary-dark);}
.btn-link svg{width:16px;height:16px;}

/* ---------- 顶光 ---------- */
.page-glow{
  position:absolute;top:0;left:0;right:0;height:420px;pointer-events:none;z-index:0;
  background:radial-gradient(58% 100% at 50% 0%,rgba(34,211,238,.10),rgba(7,11,20,0) 72%);
}

/* ---------- 文章区 ---------- */
.article-section{position:relative;z-index:1;padding:40px 0 var(--sp-section);}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;}
.article-main{min-width:0;max-width:820px;}
.article-card{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:40px 44px 44px;box-shadow:var(--shadow);
}
.article-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(90deg,rgba(34,211,238,.75),rgba(34,211,238,0));
}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb-nav a{color:var(--text-2);}
.breadcrumb-nav a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.crumb-sep{color:var(--text-3);}
.crumb-cat{color:var(--text-2);}
.crumb-current{color:var(--text);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.badge-cat{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:rgba(34,211,238,.12);color:var(--primary);
  border:1px solid rgba(34,211,238,.28);margin-bottom:14px;
}
.article-title{
  font-size:clamp(26px,3.2vw,40px);line-height:1.25;letter-spacing:.2px;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:8px 20px;padding-bottom:22px;margin-bottom:30px;
  border-bottom:1px solid var(--line);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text-2);overflow-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  font-size:24px;line-height:1.4;color:var(--text);margin:2.2em 0 .8em;padding-left:14px;
  border-left:3px solid var(--primary);
}
.article-body h3{font-size:20px;color:var(--text);margin:1.8em 0 .6em;}
.article-body h4{font-size:17px;color:var(--text);margin:1.6em 0 .5em;}
.article-body ul,.article-body ol{padding-left:1.3em;margin:0 0 1.25em;}
.article-body li{margin:.4em 0;}
.article-body ul li::marker{color:var(--primary);}
.article-body ol li::marker{color:var(--primary);font-weight:600;}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;background:var(--panel-2);border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:1.4em 0;}
.article-body figure{margin:1.4em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--primary-dark);}
.article-body code{
  background:var(--panel-2);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--primary);
}
.article-body pre{
  background:var(--panel-2);border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0;}
.article-body th,.article-body td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{color:var(--text);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:flex-start;gap:16px;
  padding:40px 0 12px;border-top:1px solid var(--line);
}
.empty-state svg{width:32px;height:32px;color:var(--text-3);}
.empty-state h2{font-size:20px;}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ---------- 正文内下载条 ---------- */
.inline-download{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  margin:38px 0 0;padding:22px 24px;border-radius:var(--r-card);
  background:var(--panel-2);border:1px solid var(--line-2);
}
.inline-download h3{font-size:17px;margin-bottom:6px;}
.inline-download p{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.inline-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 标签与翻页 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.02);font-size:13px;color:var(--text-2);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--primary);border-color:var(--line-2);background:rgba(34,211,238,.07);}
.post-nav{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 24px;margin-top:24px;
  padding-top:22px;border-top:1px solid var(--line);font-size:14px;
}
.post-nav a{color:var(--text-2);display:inline-flex;align-items:center;gap:6px;}
.post-nav a:hover{color:var(--primary);}
.post-nav svg{width:15px;height:15px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:30px;font-size:14px;}
.aside-block{border-top:1px solid var(--line);padding-top:16px;}
.aside-block h3{font-size:13px;letter-spacing:.1em;color:var(--text-3);font-weight:600;margin-bottom:12px;text-transform:uppercase;}
.aside-list{list-style:none;padding:0;}
.aside-list li{padding:11px 0;border-bottom:1px solid var(--line);}
.aside-list li:last-child{border-bottom:0;}
.aside-list a{color:var(--text-2);font-size:14px;line-height:1.5;display:block;}
.aside-list a:hover{color:var(--primary);}
.aside-download{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;
}
.aside-download h3{font-size:15px;color:var(--text);letter-spacing:0;text-transform:none;margin-bottom:8px;}
.aside-download p{font-size:13px;color:var(--text-3);margin-bottom:16px;line-height:1.7;}
.aside-download .btn{width:100%;}

/* ---------- 相关推荐 ---------- */
.related-section{padding:0 0 var(--sp-section);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  position:relative;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.related-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,rgba(34,211,238,.6),rgba(34,211,238,0));z-index:2;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow);}
.related-thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:filter .22s ease;}
.related-card:hover .related-thumb img{filter:brightness(1.06);}
.related-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;}
.related-body h3{
  font-size:17px;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-body p{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-foot{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.related-body a{color:inherit;}
.related-body a:hover h3{color:var(--primary);}

/* ---------- 底部 CTA ---------- */
.cta-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-inner p{font-size:14px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);padding:64px 0 0;margin-top:0;background:var(--bg);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;}
.footer-brand p{font-size:13px;color:var(--text-3);line-height:1.8;margin-top:16px;max-width:32ch;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;font-weight:600;}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px;}
.footer-col li{font-size:13px;color:var(--text-3);line-height:1.7;}
.footer-col a{font-size:13px;color:var(--text-3);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding:20px 24px 24px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-shell{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-main{max-width:820px;}
  .article-aside{position:static;margin-top:40px;}
  .aside-download{max-width:420px;}
}
@media (max-width:991.98px){
  :root{--sp-section:64px;}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:12px 24px 40px;background:#070B14;border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:none;pointer-events:auto;}
  .nav-links a{font-size:18px;min-height:56px;display:flex;align-items:center;border-bottom:1px solid var(--line);}
  .nav-links a.active::after{display:none;}
  .nav-toggle{display:grid;}
  .nav-inner{height:60px;}
  .article-card{padding:32px 28px 36px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  :root{--sp-section:44px;}
  .container{padding:0 18px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .article-title{-webkit-line-clamp:3;}
  .article-card{padding:26px 20px 30px;border-radius:14px;}
  .crumb-current{max-width:32ch;}
  .inline-download{padding:18px;gap:16px;}
  .inline-actions{width:100%;}
  .inline-actions .btn{flex:1 1 auto;}
  .related-grid{grid-template-columns:1fr;}
  .cta-inner{align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:520px){
  .brand{font-size:15px;}
  .brand-mark{width:28px;height:28px;font-size:14px;}
  .article-meta{gap:6px 14px;}
  .post-nav{flex-direction:column;gap:12px;}
  .btn{min-height:44px;padding:0 18px;font-size:14px;}
}

/* roulang page: category1 */
:root{
  --brand:#22D3EE;
  --brand-press:#0FB6D4;
  --accent:#FF8A4C;
  --ok:#6EE7A8;
  --bg:#070B14;
  --panel:#0E1626;
  --layer:#121D33;
  --line:rgba(255,255,255,.08);
  --line-brand:rgba(34,211,238,.35);
  --text:#E6EEF9;
  --text-2:#94A7C4;
  --text-3:#64748B;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.28);
  --space:88px;
  --bs-primary:#22D3EE;
  --bs-body-bg:#070B14;
  --bs-body-color:#E6EEF9;
  --bs-border-radius:12px;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
a:hover{color:#7DE9FA;}
h1,h2,h3,h4{line-height:1.25;margin:0;font-weight:600;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  border-bottom:1px solid var(--line);
  background:rgba(7,11,20,.72);
  transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;
}
.site-header.scrolled{
  background:rgba(9,14,26,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:rgba(255,255,255,.12);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:600;font-size:17px;letter-spacing:.3px;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;border:1px solid var(--line-brand);
  background:linear-gradient(160deg,rgba(34,211,238,.22),rgba(34,211,238,.04));
  color:var(--brand);font-size:15px;font-weight:700;
}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;color:var(--text-2);font-weight:500;font-size:15px;
  padding:6px 0 10px;border-bottom:2px solid transparent;
}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--text);border-bottom-color:var(--brand);}
.nav-tools{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--text-2);
  cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--line-brand);background:rgba(34,211,238,.06);}
.icon-btn svg{width:20px;height:20px;}
.nav-toggle{display:none;}

/* ---------- 面包屑 ---------- */
.breadcrumb-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);margin-bottom:18px;
}
.breadcrumb-line a{color:var(--text-2);}
.breadcrumb-line a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb-line .sep{color:var(--text-3);}
.breadcrumb-line .current{color:var(--text);}

/* ---------- 窄 Hero ---------- */
.hero-guide{
  position:relative;padding:140px 0 56px;min-height:42vh;display:flex;align-items:flex-end;
  background-image:linear-gradient(180deg,rgba(7,11,20,.82) 0%,rgba(7,11,20,.9) 60%,var(--bg) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-guide h1{
  font-size:clamp(30px,4.4vw,46px);font-weight:700;letter-spacing:.4px;margin-bottom:16px;
}
.hero-guide h1 .hl{color:var(--brand);}
.hero-guide .lead{color:var(--text-2);font-size:16px;max-width:640px;margin-bottom:26px;}
.search-bar{display:flex;gap:10px;max-width:540px;}
.search-bar input{
  flex:1;height:48px;padding:0 16px;border-radius:12px;
  background:rgba(14,22,38,.9);border:1px solid rgba(255,255,255,.12);
  color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.search-bar input::placeholder{color:var(--text-3);}
.search-bar input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(34,211,238,.16);}
.btn-primary-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
  padding:0 22px;border-radius:12px;border:1px solid rgba(34,211,238,.5);
  background:var(--brand);color:#04121A;font-weight:600;font-size:15px;
  box-shadow:var(--glow);transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-primary-cta:hover{background:#5BE3F5;color:#04121A;transform:translateY(-2px);box-shadow:0 0 30px rgba(34,211,238,.42);}
.btn-primary-cta:active{background:var(--brand-press);transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;
  padding:0 22px;border-radius:12px;border:1px solid var(--line-brand);
  background:transparent;color:var(--brand);font-weight:600;font-size:15px;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.btn-ghost:hover{background:rgba(34,211,238,.1);color:#7DE9FA;transform:translateY(-2px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:500;font-size:15px;
}
.btn-text:hover{color:#7DE9FA;text-decoration:underline;text-underline-offset:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space) 0;}
.section-sm{padding:56px 0;}
.section-head{margin-bottom:36px;max-width:720px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:12px;}
.section-head p{color:var(--text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:24px;padding:0 12px;margin-bottom:16px;
  border-radius:999px;background:rgba(34,211,238,.12);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.6px;
}

/* ---------- 指引布局 ---------- */
.guide-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:48px;align-items:start;}
.side-nav{position:sticky;top:96px;}
.side-block{padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid var(--line);}
.side-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.side-block h4{font-size:13px;letter-spacing:1.2px;color:var(--text-3);font-weight:600;margin-bottom:14px;text-transform:uppercase;}
.side-list li{margin-bottom:4px;}
.side-list a{
  display:flex;align-items:center;min-height:40px;padding:0 12px;
  border-left:2px solid transparent;color:var(--text-2);font-size:15px;border-radius:0 8px 8px 0;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.side-list a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.side-list a.active{color:var(--brand);border-left-color:var(--brand);background:rgba(34,211,238,.08);}
.side-tip p{font-size:13px;color:var(--text-2);line-height:1.8;}

/* ---------- 步骤时间线 ---------- */
.timeline{position:relative;padding-left:8px;}
.timeline::before{
  content:"";position:absolute;left:25px;top:12px;bottom:24px;width:1px;
  background:linear-gradient(180deg,rgba(34,211,238,.55),rgba(255,255,255,.06));
}
.step-card{
  position:relative;display:grid;grid-template-columns:52px minmax(0,1fr);gap:22px;
  padding:0 0 34px 0;
}
.step-card:last-child{padding-bottom:0;}
.step-num{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-brand);background:var(--bg);color:var(--brand);
  font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.5px;
  box-shadow:0 0 0 6px var(--bg);
}
.step-body{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);
  padding:24px;position:relative;overflow:hidden;transition:transform .22s ease,border-color .22s ease;
}
.step-body::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,rgba(34,211,238,.85),rgba(34,211,238,0));
}
.step-body:hover{transform:translateY(-2px);border-color:var(--line-brand);}
.step-body h3{font-size:20px;margin-bottom:10px;}
.step-body p{color:var(--text-2);font-size:15px;margin-bottom:14px;}
.step-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.step-list li{position:relative;padding-left:18px;color:var(--text-2);font-size:15px;}
.step-list li::before{
  content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;
  border:1px solid var(--brand);background:rgba(34,211,238,.18);
}
.step-figure{margin:0;border-radius:12px;overflow:hidden;border:1px solid var(--line);}
.step-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:filter .22s ease;}
.step-body:hover .step-figure img{filter:brightness(1.06);}
.step-figure figcaption{font-size:13px;color:var(--text-3);padding:10px 14px;background:rgba(255,255,255,.02);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;border:1px solid var(--line);color:var(--text-2);
}
.tag-brand{background:rgba(34,211,238,.12);border-color:transparent;color:var(--brand);font-weight:600;}
.tag-ok{background:rgba(110,231,168,.12);border-color:transparent;color:var(--ok);font-weight:600;}

/* ---------- 登陆方式卡片 ---------- */
.mode-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.mode-card{
  position:relative;padding:24px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);overflow:hidden;transition:transform .22s ease,border-color .22s ease;
}
.mode-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,rgba(34,211,238,.8),rgba(34,211,238,0));
}
.mode-card:hover{transform:translateY(-2px);border-color:var(--line-brand);}
.mode-card h3{font-size:19px;margin-bottom:10px;}
.mode-card p{color:var(--text-2);font-size:15px;margin-bottom:16px;}
.mode-card .meta{display:flex;gap:16px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:14px;}
.mode-card .meta strong{color:var(--text);font-weight:600;}

/* ---------- 安全设置双栏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;}
.split-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.check-list{display:flex;flex-direction:column;gap:18px;margin-top:8px;}
.check-list li{display:grid;grid-template-columns:26px minmax(0,1fr);gap:14px;}
.check-ico{
  width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-brand);color:var(--brand);font-size:13px;font-weight:700;margin-top:2px;
}
.check-list h4{font-size:16px;font-weight:600;margin-bottom:4px;}
.check-list p{color:var(--text-2);font-size:14px;}

/* ---------- FAQ ---------- */
.faq-wrap{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 22px 0;background:transparent;border:0;color:var(--text);
  font-size:17px;font-weight:600;text-align:left;cursor:pointer;position:relative;
  transition:color .2s ease,padding-left .2s ease;
}
.faq-btn::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--brand);opacity:0;box-shadow:0 0 12px rgba(34,211,238,.6);transition:opacity .2s ease;
}
.faq-btn[aria-expanded="true"]{color:var(--brand);padding-left:14px;}
.faq-btn[aria-expanded="true"]::before{opacity:1;}
.faq-btn:hover{color:var(--brand);}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform .24s ease;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:7px;height:1.5px;}
.faq-icon::after{top:0;bottom:0;left:7px;width:1.5px;}
.faq-btn[aria-expanded="true"] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 0 24px 14px;color:var(--text-2);font-size:15px;max-width:760px;}
.faq-body p+p{margin-top:10px;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:56px 0;background:linear-gradient(180deg,rgba(18,29,51,.5),rgba(7,11,20,0));
}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:8px;}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);padding:64px 0 28px;background:#050810;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;}
.footer-brand p{color:var(--text-2);font-size:13px;margin-top:16px;max-width:320px;line-height:1.8;}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--text);}
.footer-col ul li{font-size:13px;color:var(--text-2);margin-bottom:10px;line-height:1.7;}
.footer-col ul li a{color:var(--text-2);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .guide-layout{grid-template-columns:220px minmax(0,1fr);gap:36px;}
  .split{gap:36px;}
}
@media (max-width:991.98px){
  :root{--space:64px;}
  .nav-links{
    position:fixed;top:60px;right:0;bottom:0;left:0;z-index:999;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    padding:16px 24px 32px;background:#070B14;
    transform:translateX(100%);visibility:hidden;
    transition:transform .24s ease,visibility .24s ease;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);visibility:visible;}
  .nav-links a{
    display:flex;align-items:center;height:56px;font-size:17px;
    border-bottom:1px solid var(--line);border-left:0;padding:0;
  }
  .nav-links a.active{border-bottom-color:var(--line);color:var(--brand);}
  .nav-inner{height:60px;}
  .nav-toggle{display:inline-flex;}
  .guide-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .side-nav{position:static;order:2;border-top:1px solid var(--line);padding-top:24px;}
  .guide-main{order:1;}
  .mode-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:minmax(0,1fr);}
  .hero-guide{padding:120px 0 48px;min-height:38vh;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
}
@media (max-width:767.98px){
  :root{--space:44px;}
  .container{padding:0 18px;}
  .mode-grid{grid-template-columns:minmax(0,1fr);}
  .step-card{grid-template-columns:44px minmax(0,1fr);gap:16px;}
  .step-num{width:44px;height:44px;font-size:15px;}
  .timeline::before{left:21px;}
  .step-body{padding:20px;}
  .search-bar{flex-direction:column;}
  .search-bar .btn-primary-cta{width:100%;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary-cta,.cta-actions .btn-ghost{flex:1 1 auto;}
  .faq-btn{font-size:16px;padding:18px 0;}
}
@media (max-width:575.98px){
  .brand span:last-child{font-size:15px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;}
  .hero-guide h1{font-size:26px;}
  .step-card{grid-template-columns:minmax(0,1fr);}
  .step-num{margin-bottom:-8px;box-shadow:none;}
  .timeline::before{display:none;}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --panel:#0E1626;
  --panel-2:#121D33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,211,238,.35);
  --primary:#22D3EE;
  --primary-press:#0FB6D4;
  --accent:#FF8A4C;
  --ok:#6EE7A8;
  --text:#E6EEF9;
  --muted:#94A7C4;
  --weak:#64748B;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.28);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --bs-body-bg:#070B14;
  --bs-body-color:#E6EEF9;
  --bs-body-font-family:var(--font);
  --bs-border-radius:16px;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-primary:#22D3EE;
  --bs-link-color:#22D3EE;
  --bs-link-hover-color:#0FB6D4;
  --bs-emphasis-color:#E6EEF9;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-press)}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,20,.92);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,backdrop-filter .24s ease;
}
.site-header.scrolled{
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:17px;letter-spacing:.2px;text-decoration:none;white-space:nowrap}
.brand:hover{color:var(--text)}
.brand-mark{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(34,211,238,.95),rgba(34,211,238,.4));
  color:#04121B;font-weight:800;font-size:15px;flex:0 0 30px;
}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{position:relative;color:var(--muted);font-size:15px;font-weight:500;padding:6px 0;text-decoration:none;transition:color .2s ease}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(34,211,238,.65);
}
.nav-tools{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--muted);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:rgba(34,211,238,.06);transform:translateY(-2px)}
.nav-toggle{display:none}
@media (max-width:991.98px){
  .nav-inner{height:60px}
  .nav-toggle{display:grid}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:12px 24px 40px;
    background:rgba(7,11,20,.98);
    border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-links a{display:flex;align-items:center;width:100%;height:56px;font-size:18px;border-bottom:1px solid var(--line);color:var(--muted)}
  .nav-links a.active{color:var(--primary)}
  .nav-links a.active::after{display:none}
  .brand{font-size:16px}
}

/* 通用板块 */
.sec{padding:88px 0}
.sec-tight{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px)}
.sec-desc{color:var(--muted);font-size:15px;margin-top:12px;max-width:700px}
.sec-line{height:1px;background:var(--line);border:0;margin:0}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:var(--weak)}
.crumb .current{color:var(--text)}

/* 按钮 */
.btn-x,.btn-o,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-x{background:var(--primary);color:#04121B;border:1px solid rgba(34,211,238,.7);box-shadow:var(--glow)}
.btn-x:hover{background:var(--primary-press);color:#04121B;transform:translateY(-2px);box-shadow:0 0 30px rgba(34,211,238,.45)}
.btn-o{background:transparent;color:var(--primary);border:1px solid var(--line-strong)}
.btn-o:hover{background:rgba(34,211,238,.08);color:var(--primary);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}
.btn-ghost:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-2px)}
.btn-x svg,.btn-o svg,.btn-ghost svg{width:18px;height:18px}
.link-x{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:gap .2s ease,color .2s ease}
.link-x:hover{gap:11px;color:var(--primary-press)}
.btn-group-x{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn-meta{font-size:13px;color:var(--weak);width:100%}

/* 胶囊与徽章 */
.pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.02);
  color:var(--muted);font-size:13px;white-space:nowrap;
}
.pill b{color:var(--text);font-weight:600}
.pill-primary{border-color:var(--line-strong);background:rgba(34,211,238,.12);color:var(--primary)}
.pill-ok{border-color:rgba(110,231,168,.35);background:rgba(110,231,168,.1);color:var(--ok)}
.meta-pills{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0}

/* 工具头条 */
.tool-head{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:center;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px;
}
.tool-head::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,rgba(34,211,238,0),rgba(34,211,238,.9),rgba(34,211,238,0));
}
.tool-head h1{font-size:clamp(30px,3.8vw,44px);letter-spacing:.4px}
.tool-lead{color:var(--muted);font-size:15px;margin-top:18px;max-width:560px}
.tool-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:12px;border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.tool-visual figcaption{font-size:13px;color:var(--weak);margin-top:12px;text-align:center}

/* 信息卡 */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fact{
  position:relative;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;transition:transform .22s ease,border-color .22s ease;
}
.fact::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,rgba(34,211,238,.7),rgba(34,211,238,0))}
.fact:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.fact-icon{width:34px;height:34px;color:var(--primary);margin-bottom:18px}
.fact h3{font-size:18px;margin-bottom:10px}
.fact p{color:var(--muted);font-size:14px;line-height:1.7}

/* 版本历史 */
.ver-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 56px}
.ver-row{display:flex;gap:20px;justify-content:space-between;align-items:flex-start;padding:22px 0;border-bottom:1px solid var(--line);transition:background .2s ease}
.ver-row:hover{background:rgba(34,211,238,.04)}
.ver-main{min-width:0}
.ver-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.badge-ver{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.3px;
  background:rgba(34,211,238,.12);color:var(--primary);border:1px solid rgba(34,211,238,.28);
}
.ver-meta{font-size:13px;color:var(--weak)}
.ver-row h3{font-size:16px;font-weight:600;margin-bottom:6px}
.ver-row p{font-size:14px;color:var(--muted);line-height:1.7}
.ver-row .link-x{flex:0 0 auto;white-space:nowrap;padding-top:4px}

/* 系统要求 */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px}
.req-card h3{font-size:20px;display:flex;align-items:center;gap:10px;margin-bottom:6px}
.req-card h3 svg{width:22px;height:22px;color:var(--primary)}
.req-note{font-size:13px;color:var(--weak);margin-bottom:14px}
.req-list .req-item{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.req-list .req-item:last-child{border-bottom:0}
.req-item dt{color:var(--muted);font-weight:400;margin:0}
.req-item dd{margin:0;color:var(--text);text-align:right}
.req-extra{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:24px}

/* 校验说明 */
.verify{
  display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;
  margin-top:24px;padding:30px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--panel-2);
}
.verify h3{font-size:20px;margin-bottom:12px}
.verify p{color:var(--muted);font-size:14px;margin-bottom:12px}
.verify ul li{position:relative;padding-left:18px;color:var(--muted);font-size:14px;margin-bottom:10px}
.verify ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary)}
.verify img{border-radius:12px;border:1px solid var(--line);aspect-ratio:16/9;object-fit:cover}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border-top:1px solid var(--line);padding-top:24px}
.step-num{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary);font-weight:700;font-size:16px;
  font-variant-numeric:tabular-nums;margin-bottom:18px;
}
.step h3{font-size:17px;margin-bottom:10px}
.step p{color:var(--muted);font-size:14px;line-height:1.75}

/* FAQ */
.faq-list{max-width:900px}
.faq-item{
  border-bottom:1px solid var(--line);
  border-left:3px solid transparent;
  padding-left:18px;
  transition:border-color .22s ease;
}
.faq-item[open]{border-left-color:var(--primary)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform .24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{padding:0 0 22px;color:var(--muted);font-size:14px;line-height:1.8;max-width:780px}

/* 下载条 */
.dl-bar{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 32px;
}
.dl-bar h3{font-size:20px;margin-bottom:8px}
.dl-bar .dl-note{font-size:13px;color:var(--weak)}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* CTA */
.cta{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0;text-align:center}
.cta h2{font-size:clamp(24px,2.6vw,34px)}
.cta p{color:var(--muted);font-size:15px;margin-top:14px}
.cta .btn-group-x{justify-content:center;margin-top:28px}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:var(--bg)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding:64px 0 40px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:18px;max-width:330px;line-height:1.75}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);letter-spacing:.4px;margin-bottom:20px}
.footer-col li{font-size:13px;color:var(--muted);margin-bottom:12px;line-height:1.7}
.footer-col a{font-size:13px;color:var(--muted)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:22px 0 34px;font-size:13px;color:var(--weak);
}

@media (max-width:1199.98px){
  .ver-cols{gap:0 40px}
}
@media (max-width:991.98px){
  .sec{padding:64px 0}
  .sec-tight{padding:48px 0}
  .tool-head{grid-template-columns:1fr;gap:32px;padding:30px}
  .facts{grid-template-columns:1fr}
  .ver-cols{grid-template-columns:1fr;gap:0}
  .req-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .verify{grid-template-columns:1fr;gap:24px;padding:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding:48px 0 32px}
  .dl-bar{padding:24px}
}
@media (max-width:575.98px){
  .sec{padding:44px 0}
  .sec-head{margin-bottom:28px}
  .steps{grid-template-columns:1fr}
  .tool-head{padding:24px}
  .btn-x,.btn-o,.btn-ghost{width:100%}
  .dl-actions{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .ver-row{flex-direction:column;gap:12px}
  .ver-row .link-x{padding-top:0}
  .req-item{flex-direction:column;gap:4px}
  .req-item dd{text-align:left}
}

/* roulang page: category3 */
:root{
  --bg:#070B14;
  --panel:#0E1626;
  --panel-2:#121D33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,211,238,.35);
  --text:#E6EEF9;
  --muted:#94A7C4;
  --weak:#64748B;
  --primary:#22D3EE;
  --primary-press:#0FB6D4;
  --accent:#FF8A4C;
  --ok:#6EE7A8;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --glow:0 0 24px rgba(34,211,238,.28);
  --space:88px;
  --bs-primary:#22D3EE;
  --bs-body-bg:#070B14;
  --bs-body-color:#E6EEF9;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:#7ee9f8}
img{max-width:100%;display:block}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .24s ease;
}
.site-header.is-scrolled{background:rgba(7,11,20,.94)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:600;font-size:17px;letter-spacing:.2px;white-space:nowrap}
.brand:hover{color:var(--text)}
.brand-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(140deg,var(--primary),#0e7490);color:#04121a;font-weight:700;font-size:15px;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{position:relative;color:var(--muted);font-weight:500;font-size:15px;padding:6px 0;white-space:nowrap}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--primary)}
.nav-tools{display:flex;align-items:center;gap:10px}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--muted);display:grid;place-items:center;cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(34,211,238,.06)}
.nav-toggle{display:none}

/* 页头 */
.page-hero{
  position:relative;
  padding:52px 0 40px;
  background-image:linear-gradient(rgba(7,11,20,.88),rgba(7,11,20,.96)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak)}
.crumbs a{color:var(--muted);border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--primary);border-bottom-color:var(--line-strong)}
.crumbs .sep{color:rgba(255,255,255,.18)}
.crumbs .cur{color:var(--text)}
.page-hero h1{margin-top:18px;font-size:clamp(26px,3.4vw,40px);letter-spacing:.2px}
.page-hero .lead{margin-top:14px;max-width:760px;color:var(--muted);font-size:16px}
.filter-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:28px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  padding:7px 15px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.02);color:var(--muted);font-size:13px;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.2)}
.chip.is-active{background:rgba(34,211,238,.12);border-color:var(--line-strong);color:var(--primary)}
.search-box{display:flex;align-items:center;gap:8px;min-width:300px;flex:1 1 300px;max-width:420px}
.search-box input{
  flex:1;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.12);
  color:var(--text);outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input::placeholder{color:var(--weak)}
.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(34,211,238,.16)}
.search-box .btn-ghost{height:44px;padding:0 18px}

/* 布局 */
.layout{display:grid;grid-template-columns:minmax(0,2.05fr) minmax(0,1fr);gap:34px;padding:52px 0 0}
.sec-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.sec-title h2{font-size:clamp(20px,2.1vw,26px)}
.sec-title .more{font-size:14px;color:var(--primary);border-bottom:1px solid rgba(34,211,238,.35)}
.sec-note{color:var(--weak);font-size:13px}

/* 主题卡片 */
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.topic-card{
  position:relative;display:flex;gap:16px;padding:20px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .2s ease,border-color .2s ease;
}
.topic-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),transparent);opacity:.45}
.topic-card:hover{transform:translateY(-2px);border-color:rgba(34,211,238,.28)}
.topic-thumb{width:72px;height:72px;flex:0 0 auto;border-radius:12px;object-fit:cover;border:1px solid var(--line)}
.topic-body{min-width:0}
.topic-body h3{font-size:17px}
.topic-body h3 a{color:var(--text)}
.topic-body h3 a:hover{color:var(--primary)}
.topic-desc{margin-top:8px;color:var(--muted);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.topic-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;font-size:12px;color:var(--weak)}
.badge-cat{padding:3px 10px;border-radius:999px;font-size:12px;background:rgba(34,211,238,.12);color:var(--primary);border:1px solid rgba(34,211,238,.22)}
.badge-neutral{padding:3px 10px;border-radius:999px;font-size:12px;border:1px solid var(--line);color:var(--muted)}
.badge-ok{padding:3px 10px;border-radius:999px;font-size:12px;background:rgba(110,231,168,.12);color:var(--ok);border:1px solid rgba(110,231,168,.3)}

/* 公告条 */
.notice-panel{margin-top:36px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 24px}
.notice-panel h2{font-size:20px}
.notice-list{margin-top:6px}
.notice-list li{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.notice-list li:last-child{border-bottom:0;padding-bottom:0}
.notice-list .date{font-size:13px;color:var(--weak);min-width:96px}
.notice-list .txt{flex:1;min-width:200px;color:var(--text);font-size:15px}
.notice-list a{font-size:13px;color:var(--primary);border-bottom:1px solid rgba(34,211,238,.35)}

/* 分页 */
.pagination-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.page-num{min-width:38px;height:38px;padding:0 12px;display:grid;place-items:center;border-radius:10px;border:1px solid transparent;color:var(--muted);font-size:14px}
.page-num:hover{color:var(--text);border-color:var(--line)}
.page-num.is-current{background:rgba(34,211,238,.12);border-color:var(--line-strong);color:var(--primary)}
.page-num.is-disabled{color:var(--weak);opacity:.5;pointer-events:none}

/* 侧栏 */
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;margin-bottom:20px}
.side-card h3{font-size:16px;margin-bottom:14px}
.dl-card{background:var(--panel-2);border:1px solid var(--line-strong);box-shadow:var(--glow);padding:20px}
.dl-card .dl-cover{width:100%;border-radius:12px;border:1px solid var(--line);aspect-ratio:16/9;object-fit:cover}
.dl-ver{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px}
.dl-meta{margin-top:12px;font-size:13px;color:var(--muted);display:grid;gap:8px}
.dl-meta div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:8px}
.dl-meta span:last-child{color:var(--text)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{padding:6px 12px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-size:13px}
.tag-cloud a:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(34,211,238,.08)}
.side-links li{border-bottom:1px solid var(--line)}
.side-links li:last-child{border-bottom:0}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;color:var(--muted);font-size:14px}
.side-links a:hover{color:var(--primary)}
.side-links .arrow{color:var(--weak)}
.side-support{font-size:14px;color:var(--muted);line-height:1.8}
.side-support strong{color:var(--text);font-weight:500}

/* 按钮 */
.btn-main,.btn-ghost,.btn-plain{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-main{background:var(--primary);color:#04121a;border:1px solid rgba(34,211,238,.6);box-shadow:var(--glow)}
.btn-main:hover{color:#04121a;transform:translateY(-2px);box-shadow:0 0 30px rgba(34,211,238,.42)}
.btn-main:active{background:var(--primary-press)}
.btn-ghost{background:transparent;color:var(--primary);border:1px solid var(--line-strong)}
.btn-ghost:hover{color:var(--primary);background:rgba(34,211,238,.08);transform:translateY(-2px)}
.btn-plain{background:rgba(255,255,255,.04);color:var(--text);border:1px solid var(--line)}
.btn-plain:hover{color:var(--text);border-color:rgba(255,255,255,.2)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;border-bottom:1px solid rgba(34,211,238,.35);padding-bottom:2px}
.btn-text:hover{color:#7ee9f8}

/* FAQ */
.faq-wrap{margin-top:var(--space);padding-top:8px}
.faq-wrap h2{font-size:clamp(22px,2.4vw,30px)}
.faq-wrap .sub{color:var(--muted);margin-top:10px;font-size:15px}
.accordion{margin-top:22px}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:500;
  padding:20px 44px 20px 16px;border-radius:0;box-shadow:none;
}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:inset 3px 0 0 var(--primary)}
.accordion-button:focus{z-index:3;box-shadow:none;border-color:transparent}
.accordion-button:not(.collapsed):focus{box-shadow:inset 3px 0 0 var(--primary)}
.accordion-button::after{
  content:"";width:12px;height:12px;flex:0 0 auto;
  border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);
  background-image:none!important;transform:rotate(45deg);margin-left:auto;
  transition:transform .24s ease;position:absolute;right:18px;top:50%;margin-top:-8px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.accordion-body{color:var(--muted);font-size:15px;line-height:1.85;padding:0 16px 22px 16px}

/* CTA */
.cta-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:var(--space);padding:40px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px)}
.cta-inner p{color:var(--muted);font-size:15px;margin-top:8px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{margin-top:var(--space);border-top:1px solid var(--line);padding:56px 0 28px;background:#05080F}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand p{margin-top:14px;color:var(--muted);font-size:13px;line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:14px;font-weight:600}
.footer-col ul li{margin-bottom:10px}
.footer-col a,.footer-col span{color:var(--muted);font-size:13px}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:40px;padding-top:20px;border-top:1px solid var(--line);color:var(--weak);font-size:13px}

@media (max-width:1199.98px){
  :root{--space:64px}
  .topic-grid{grid-template-columns:1fr}
}
@media (max-width:991.98px){
  .nav-inner{height:60px}
  .nav-toggle{display:grid}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:16px 24px 40px;background:rgba(7,11,20,.99);
    transform:translateX(100%);transition:transform .24s ease;overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{display:flex;align-items:center;height:56px;padding:0;font-size:17px;border-bottom:1px solid var(--line)}
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:var(--primary)}
  .layout{grid-template-columns:minmax(0,1fr);padding-top:40px}
  .page-hero{padding:40px 0 32px}
}
@media (max-width:767.98px){
  :root{--space:44px}
  .filter-row{flex-direction:column;align-items:stretch}
  .search-box{max-width:none;min-width:0;flex:1 1 auto;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .topic-card{flex-direction:row}
  .notice-list .date{min-width:auto}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:519.98px){
  .footer-grid{grid-template-columns:1fr}
  .topic-card{flex-direction:column}
  .topic-thumb{width:100%;height:150px}
  .brand span:last-child{font-size:15px}
  .btn-main,.btn-ghost,.btn-plain{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .search-box{flex-direction:column;align-items:stretch}
  .search-box .btn-ghost{width:100%}
}