/* roulang page: index */
:root{
  --brand:#12E0C8;
  --brand-hi:#3BEFDA;
  --accent:#6C63FF;
  --amber:#FFC24B;
  --bg:#05080F;
  --bg-soft:#0A1018;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.08);
  --t1:#EAF2F6;
  --t2:#A6B6C2;
  --t3:#6D7D8B;
  --ok:#35D07F;
  --warn:#FF7A59;
  --r-card:16px;
  --r-glass:20px;
  --r-sm:12px;
  --nav-h:72px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-hi)}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
p{max-width:760px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.wrap{padding:0 28px}}
@media (min-width:1440px){.wrap{max-width:1280px}}
.grid-x{display:flex;flex-flow:row wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px;width:100%}
@media (min-width:640px){.grid-x>.cell.small-6{width:50%}.grid-x>.cell.medium-6{width:50%}}
@media (min-width:1024px){
  .grid-x>.cell.large-4{width:33.3333%}
  .grid-x>.cell.large-5{width:41.6667%}
  .grid-x>.cell.large-6{width:50%}
  .grid-x>.cell.large-7{width:58.3333%}
  .grid-x>.cell.large-8{width:66.6667%}
  .grid-x>.cell.large-12{width:100%}
}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:var(--nav-h);
  background:transparent;border-bottom:1px solid transparent;
  transition:background .25s ease-out,border-color .25s ease-out,backdrop-filter .25s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.topbar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:var(--nav-h);gap:16px}
.nav-group{display:flex;align-items:center;gap:28px}
.nav-group.right{justify-content:flex-end}
.nav-link{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--t2);padding:6px 0;white-space:nowrap}
.nav-link:hover{color:var(--t1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(18,224,200,.8)
}
.logo{display:inline-flex;align-items:center;gap:10px;transition:transform .25s ease-out}
.site-header.is-scrolled .logo{transform:scale(.92)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  box-shadow:0 6px 20px rgba(18,224,200,.28)
}
.logo-mark svg{width:19px;height:19px;display:block}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--t1)}
.logo-text span{color:var(--brand)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.04);cursor:pointer;padding:0;place-items:center
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;margin:3px auto;transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.mobile-panel{
  position:fixed;top:var(--nav-h);left:0;right:0;z-index:79;
  background:rgba(10,16,24,.98);border-bottom:1px solid var(--line);
  padding:8px 0 20px;display:none;transform:translateY(-8px);opacity:0;
  transition:transform .24s ease-out,opacity .24s ease-out
}
.mobile-panel.is-open{display:block;transform:translateY(0);opacity:1}
.mobile-panel a.m-link{display:flex;align-items:center;height:48px;padding:0 24px;font-size:16px;color:var(--t2);border-bottom:1px solid rgba(255,255,255,.04)}
.mobile-panel a.m-link.is-active{color:var(--brand)}
.mobile-panel .m-cta{padding:18px 24px 0}
@media (max-width:1023px){
  .nav-group{display:none}
  .topbar{grid-template-columns:44px 1fr 44px}
  .topbar .logo{justify-self:center}
  .nav-toggle{display:grid}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border:1px solid transparent;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,filter .22s ease-out
}
.btn-primary{background:linear-gradient(180deg,#35F0D0,#12E0C8);color:#05201E}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 24px rgba(18,224,200,.45);transform:translateY(-1px);color:#05201E}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid rgba(18,224,200,.4);color:var(--brand);border-radius:12px}
.btn-ghost:hover{background:rgba(18,224,200,.1);color:var(--brand-hi)}
.btn-lg{height:52px;padding:0 32px;font-size:16px}
.btn-sm{height:36px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;
  padding:5px 10px;border-radius:8px;
  background:rgba(108,99,255,.16);color:#BEB9FF;border:1px solid rgba(108,99,255,.3)
}
.badge-new{background:rgba(255,194,75,.14);color:var(--amber);border-color:rgba(255,194,75,.32)}
.badge-brand{background:rgba(18,224,200,.13);color:var(--brand);border-color:rgba(18,224,200,.3)}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 60px) 0 92px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);
  width:min(60vw,760px);height:560px;pointer-events:none;
  background:radial-gradient(circle,rgba(18,224,200,.08),transparent 70%)
}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.24
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;pointer-events:none
}
.hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.6) 0%,rgba(5,8,15,.86) 60%,var(--bg) 100%)}
.hero-inner{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--t2);margin-bottom:18px}
.eyebrow i{color:var(--brand)}
h1{font-size:clamp(28px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--t2);max-width:640px}
.hero .btn-row{margin-top:32px}
.version-bar{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px 26px;font-size:13px;color:var(--t2)}
.version-bar b{color:var(--t1);font-weight:600}
.hero-visual{position:relative;margin-top:40px}
.shot-frame{
  position:relative;border-radius:var(--r-glass);overflow:hidden;
  border:1px solid rgba(18,224,200,.22);
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 24px 60px rgba(0,0,0,.5),0 0 40px rgba(18,224,200,.12)
}
.shot-frame .ratio{position:relative;padding-top:62%}
.shot-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.float-card{
  position:absolute;left:-12px;bottom:-24px;width:200px;padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(10,16,24,.92);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:0 16px 36px rgba(0,0,0,.45)
}
.float-card .fc-num{font-size:24px;font-weight:800;color:var(--brand)}
.float-card .fc-txt{font-size:12px;color:var(--t2);line-height:1.5}
.seal{
  position:absolute;right:8px;top:-26px;width:76px;height:76px;border-radius:18px;
  border:1px solid rgba(18,224,200,.18);display:grid;place-items:center;
  font-size:30px;font-weight:800;color:rgba(18,224,200,.14);transform:rotate(-6deg)
}
@media (max-width:1023px){
  .hero{padding-top:calc(var(--nav-h) + 40px);padding-bottom:64px}
  .hero-visual{margin-top:36px}
  .float-card{position:static;width:100%;margin-top:16px}
  .seal{display:none}
}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative}
.section.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--t2);font-size:16px}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{text-decoration:underline}
@media (max-width:1023px){.section{padding:72px 0}.section-head{margin-bottom:32px}}
@media (max-width:639px){.section{padding:56px 0}}

/* ---------- stats ---------- */
.stat-card{
  height:100%;padding:26px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(18px) saturate(140%);
  transition:transform .24s ease-out,border-color .24s ease-out
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.35)}
.stat-num{font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--brand);letter-spacing:-.02em}
.stat-lab{margin-top:6px;font-size:13px;color:var(--t2)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:1023px){.stat-grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- features ---------- */
.feature-row{display:grid;gap:var(--gap);margin-bottom:var(--gap)}
.feature-row.r1{grid-template-columns:7fr 5fr}
.feature-row.r2{grid-template-columns:5fr 7fr}
.feature-card{
  padding:30px 28px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(18px) saturate(140%);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.35);box-shadow:0 18px 40px rgba(0,0,0,.4)}
.feature-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(18,224,200,.12);border:1px solid rgba(18,224,200,.28);color:var(--brand);font-size:17px
}
.feature-card h3{margin-top:18px;font-size:19px;font-weight:600}
.feature-card p{margin-top:10px;color:var(--t2);font-size:15px;line-height:1.8}
@media (max-width:1023px){.feature-row.r1,.feature-row.r2{grid-template-columns:1fr}}

/* ---------- carousel ---------- */
.carousel{position:relative}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 12px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none
}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:center;
  border-radius:14px;overflow:hidden;background:var(--bg-soft);
  border:1px solid var(--line);transition:transform .24s ease-out,border-color .24s ease-out
}
.shot-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.35)}
.shot-card .ratio{position:relative;padding-top:62.5%;background:var(--bg-soft)}
.shot-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.shot-cap{padding:14px 16px;font-size:14px;color:var(--t2);border-top:1px solid var(--line)}
.shot-cap b{color:var(--t1);font-weight:600}
.car-btn{
  position:absolute;top:38%;width:44px;height:44px;border-radius:50%;
  background:rgba(10,16,24,.88);border:1px solid var(--line);color:var(--t1);
  cursor:pointer;z-index:3;display:grid;place-items:center;transition:border-color .2s ease-out,transform .2s ease-out
}
.car-btn:hover{border-color:rgba(18,224,200,.6);transform:scale(1.06)}
.car-btn.prev{left:-14px}
.car-btn.next{right:-14px}
.shot-dots{display:flex;justify-content:center;gap:8px;margin-top:18px}
.shot-dots .dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.18);border:0;padding:0;cursor:pointer;transition:background .2s ease-out,width .2s ease-out}
.shot-dots .dot.is-active{background:var(--brand);width:22px;border-radius:6px}
@media (max-width:1023px){
  .shot-card{flex:0 0 78%}
  .car-btn{display:none}
  .shot-track{padding-right:14%}
}

/* ---------- tabs (system) ---------- */
.spec-left h2{font-size:clamp(22px,3vw,34px);line-height:1.25;font-weight:700}
.spec-left p{margin-top:16px;color:var(--t2)}
.tab-bar{display:flex;gap:30px;border-bottom:1px solid var(--line);margin-bottom:6px;overflow-x:auto;scrollbar-width:none}
.tab-bar::-webkit-scrollbar{display:none}
.tab-btn{
  background:none;border:0;border-bottom:2px solid transparent;border-radius:0;
  padding:14px 0;color:var(--t2);font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:color .2s ease-out,border-color .2s ease-out
}
.tab-btn:hover{color:var(--t1)}
.tab-btn.is-active{color:var(--brand);border-bottom-color:var(--brand)}
.tab-panel{display:none}
.tab-panel.is-active{display:block}
.spec-list li{display:flex;align-items:center;justify-content:space-between;gap:18px;height:52px;border-bottom:1px solid var(--line);font-size:15px}
.spec-list li span:first-child{color:var(--t2)}
.spec-list li span:last-child{color:var(--t1);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
@media (max-width:639px){
  .spec-list li{height:auto;padding:12px 0;flex-direction:column;align-items:flex-start;gap:4px}
  .spec-list li span:last-child{text-align:left}
}

/* ---------- reviews ---------- */
.review-head{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:32px;color:var(--t2);font-size:14px}
.review-head .score{font-size:30px;font-weight:800;color:var(--amber);line-height:1}
.stars{color:var(--amber);font-size:13px;letter-spacing:2px}
.review-wall{columns:3;column-gap:22px}
.review-card{
  break-inside:avoid;margin-bottom:22px;padding:22px;
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);transition:transform .24s ease-out,border-color .24s ease-out
}
.review-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.3)}
.review-user{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#05201E;background:linear-gradient(135deg,var(--brand),var(--accent));flex:0 0 auto}
.review-user .nm{font-weight:600;font-size:15px}
.review-user .dev{font-size:12px;color:var(--t3)}
.review-card p{margin-top:12px;font-size:15px;color:var(--t2);line-height:1.8}
@media (max-width:1023px){.review-wall{columns:2}}
@media (max-width:639px){.review-wall{columns:1}}

/* ---------- download ---------- */
.download-card{
  text-align:center;padding:56px 32px;border-radius:var(--r-glass);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(18px) saturate(140%);
  position:relative;overflow:hidden
}
.download-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px
}
.download-card>*{position:relative;z-index:2}
.download-card h2{font-size:clamp(22px,3vw,32px);font-weight:700}
.download-card p{margin:16px auto 0;color:var(--t2);max-width:620px}
.download-card .btn-row{justify-content:center;margin-top:30px}
.checksum{margin-top:24px;font-size:12px;color:var(--t3);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.04em}

/* ---------- news (cms) ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);transition:transform .24s ease-out,border-color .24s ease-out
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.35)}
.news-cover{display:block;position:relative;padding-top:56.25%;overflow:hidden}
.news-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-cover::after{content:"";position:absolute;inset:auto 0 0 0;height:40%;background:linear-gradient(180deg,transparent,rgba(5,8,15,.85))}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto;gap:12px}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--t1)}
.news-body h3 a:hover{color:var(--brand)}
.news-body p{font-size:14px;color:var(--t2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--t3)}
.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;color:var(--t2);background:rgba(255,255,255,.02)
}
.empty-state .btn-row{justify-content:center;margin-top:22px}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:639px){.news-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 4px;background:none;border:0;text-align:left;cursor:pointer;
  color:var(--t1);font-size:16px;font-weight:600;transition:color .2s ease-out
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;transition:transform .24s ease-out}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:0;top:8px;width:18px;height:1.5px;background:var(--brand);border-radius:2px}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a p{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--t2);max-width:none}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t2);max-width:300px}
.footer-brand .contact{margin-top:14px;font-size:13px;color:var(--t3)}
.footer-title{font-size:15px;font-weight:600;color:var(--t1);margin-bottom:16px}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:var(--t2)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--t3)
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .site-footer{padding-top:56px}
}
@media (max-width:639px){
  .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
}

/* ---------- mobile dock ---------- */
.mobile-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(5,8,15,.92);backdrop-filter:blur(14px);border-top:1px solid var(--line)
}
.mobile-dock .btn{width:100%}
@media (max-width:767px){
  .mobile-dock{display:block}
  body{padding-bottom:76px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand:#12E0C8;
  --brand-hover:#3BEFDA;
  --brand-ink:#05201E;
  --accent:#6C63FF;
  --amber:#FFC24B;
  --bg:#05080F;
  --bg-soft:#0A1018;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --t1:#EAF2F6;
  --t2:#A6B6C2;
  --t3:#6D7D8B;
  --ok:#35D07F;
  --warn:#FF7A59;
  --r-card:16px;
  --r-glass:20px;
  --r-pill:999px;
  --r-btn:12px;
  --r-badge:8px;
  --gap:96px;
  --font:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  top:-18vw;left:50%;
  transform:translateX(-50%);
  width:60vw;height:60vw;max-width:900px;max-height:900px;
  background:radial-gradient(circle,rgba(18,224,200,.07),rgba(18,224,200,0) 68%);
  pointer-events:none;z-index:0;
}
a{color:var(--brand);text-decoration:none;transition:color .22s ease-out,opacity .22s ease-out}
a:hover{color:var(--brand-hover)}
img{max-width:100%;display:block;border:0}
button,input,textarea,select{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,224,200,.28);color:#fff}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 28px;position:relative;z-index:1}
.grid-container{padding-left:0;padding-right:0;max-width:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.55);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(6px);
  transition:background .26s ease-out,border-color .26s ease-out,backdrop-filter .26s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px) saturate(140%);
}
.nav-bar{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
  height:72px;
  transition:height .26s ease-out;
}
.site-header.is-scrolled .nav-bar{height:64px}
.nav-group{display:flex;align-items:center;gap:26px}
.nav-group.left{justify-content:flex-start}
.nav-group.right{justify-content:flex-end}
.nav-link{
  position:relative;
  color:var(--t2);
  font-size:15px;
  font-weight:500;
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease-out,box-shadow .24s ease-out;
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after,
.nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(18,224,200,.7)}
.nav-link.is-active{color:var(--brand)}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--t1);font-weight:800;font-size:19px;letter-spacing:.02em;
}
.logo-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),#35F0D0 60%,var(--accent));
  box-shadow:0 6px 18px rgba(18,224,200,.24);
  transition:transform .26s ease-out;
}
.logo-mark svg{width:22px;height:22px}
.logo:hover .logo-mark{transform:translateY(-1px) rotate(-4deg)}
.logo-text{color:var(--t1)}
.logo-text span{color:var(--brand)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--t1);cursor:pointer;
  transition:border-color .22s ease-out,background .22s ease-out;
}
.nav-toggle:hover{border-color:rgba(18,224,200,.45);background:rgba(18,224,200,.08)}
.nav-toggle .bars{display:block;width:18px;height:12px;position:relative}
.nav-toggle .bars i{
  position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.nav-toggle .bars i:nth-child(1){top:0}
.nav-toggle .bars i:nth-child(2){top:5px}
.nav-toggle .bars i:nth-child(3){top:10px}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-panel{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(5,8,15,.96);
  backdrop-filter:blur(16px);
}
.nav-panel.is-open{display:block}
.nav-panel ul{padding:8px 0 18px}
.panel-link{
  display:block;
  line-height:48px;
  padding:0 28px;
  color:var(--t2);
  font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.04);
}
.panel-link.is-active{color:var(--brand)}
.panel-cta{padding:14px 28px 26px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  text-align:center;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,color .22s ease-out,border-color .22s ease-out;
}
.btn-lg{height:52px;padding:0 30px;border-radius:var(--r-pill);font-size:16px}
.btn-md{height:44px;padding:0 24px;border-radius:var(--r-pill);font-size:15px}
.btn-sm{height:36px;padding:0 18px;border-radius:10px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#12E0C8,#35F0D0);
  color:var(--brand-ink);
  box-shadow:0 8px 22px rgba(18,224,200,.18);
}
.btn-primary:hover{
  color:var(--brand-ink);
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 24px rgba(18,224,200,.45);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  border-color:rgba(18,224,200,.4);
  color:var(--brand);
  border-radius:var(--r-btn);
}
.btn-ghost:hover{background:rgba(18,224,200,.1);color:var(--brand-hover)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:24px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);
  background:transparent;border:0;padding:0;margin:0;
}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--brand)}
.crumb-sep{color:var(--t3);opacity:.6}
.crumb-current{color:var(--t2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章主体布局 ---------- */
.article-section{padding:26px 0 var(--gap)}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:44px;
  align-items:start;
}
.article-main-card{
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
  border:1px solid var(--line);
  border-radius:var(--r-glass);
  padding:36px 36px 32px;
  backdrop-filter:blur(18px) saturate(140%);
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:30px}
.article-title{
  font-size:clamp(28px,4.4vw,40px);
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--t1);
  margin-bottom:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);
}
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(108,99,255,.16);
  border:1px solid rgba(108,99,255,.35);
  color:#C3BFFF;
}
.badge-amber{background:rgba(255,194,75,.14);border-color:rgba(255,194,75,.34);color:var(--amber)}
.meta-sep{color:var(--t3);opacity:.55}
.meta-num{font-variant-numeric:tabular-nums;font-family:var(--mono)}

/* ---------- 正文排版 ---------- */
.article-body{max-width:780px;font-size:17px;line-height:1.9;color:#DCE6EC}
.article-body > * + *{margin-top:18px}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.35;font-weight:700;color:var(--t1);
  margin:48px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--t1);margin:32px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--t1);margin:24px 0 10px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(18,224,200,.35)}
.article-body a:hover{color:var(--brand-hover);border-bottom-color:var(--brand-hover)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body ul li{position:relative;padding-left:14px;margin-bottom:10px;color:var(--t2)}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
}
.article-body ol{list-style:decimal;color:var(--t2)}
.article-body ol li{margin-bottom:10px;padding-left:4px}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body blockquote{
  margin:26px 0;
  padding:16px 20px;
  background:rgba(18,224,200,.06);
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:26px 0 10px;border:1px solid var(--line)}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--t3);margin-top:8px}
.article-body code{
  font-family:var(--mono);font-size:14px;
  background:rgba(18,224,200,.1);
  color:#9BF3E7;padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--bg-soft);
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px 18px;
  overflow-x:auto;
  font-family:var(--mono);font-size:14px;line-height:1.8;
  color:#CDE9E4;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;
  font-size:15px;border:1px solid rgba(255,255,255,.06);
  border-radius:12px;overflow:hidden;display:block;overflow-x:auto;
}
.article-body thead{background:rgba(255,255,255,.04)}
.article-body th,.article-body td{
  padding:12px 14px;text-align:left;
  border-bottom:1px solid rgba(255,255,255,.06);
  border-right:1px solid rgba(255,255,255,.04);
}
.article-body th{color:var(--t1);font-weight:600;white-space:nowrap}
.article-body td{color:var(--t2);font-variant-numeric:tabular-nums}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.018)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body strong{color:#fff;font-weight:600}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;color:var(--t2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:color .22s ease-out,border-color .22s ease-out,transform .22s ease-out;
}
.tag:hover{color:var(--brand);border-color:rgba(18,224,200,.4);transform:translateY(-1px)}

/* ---------- 空状态 ---------- */
.empty-state{
  text-align:center;padding:56px 24px;
  border:1px dashed rgba(255,255,255,.18);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
}
.empty-title{font-size:20px;font-weight:700;color:var(--t1);margin-bottom:10px}
.empty-text{font-size:15px;color:var(--t2);max-width:420px;margin:0 auto 22px}

/* ---------- 延伸阅读 ---------- */
.read-next{margin-top:38px}
.block-title{font-size:18px;font-weight:700;color:var(--t1);margin-bottom:16px}
.next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.next-card{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
  padding:20px 22px;
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.next-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,200,.35);
  box-shadow:0 18px 34px rgba(0,0,0,.4);
}
.next-label{font-size:12px;color:var(--t3);letter-spacing:.08em;margin-bottom:8px}
.next-title{font-size:16px;font-weight:600;color:var(--t1);line-height:1.5;margin-bottom:6px}
.next-desc{font-size:13px;color:var(--t3);line-height:1.7}

/* ---------- 下载 CTA ---------- */
.cta-card{
  margin-top:44px;
  border:1px solid rgba(18,224,200,.26);
  border-radius:var(--r-glass);
  background:
    radial-gradient(120% 140% at 12% 0%,rgba(18,224,200,.14),rgba(18,224,200,0) 58%),
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  padding:34px;
  backdrop-filter:blur(18px) saturate(140%);
}
.cta-title{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--t1);margin-bottom:10px}
.cta-text{font-size:15px;color:var(--t2);max-width:600px;margin-bottom:22px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-note{
  margin-top:18px;font-size:12px;color:var(--t3);
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  display:flex;flex-wrap:wrap;gap:16px;
}

/* ---------- 相关推荐 ---------- */
.related{margin-top:52px}
.related .grid-x{margin-left:-9px;margin-right:-9px}
.related .cell{padding:9px}
.info-card{
  height:100%;
  display:flex;flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
  overflow:hidden;
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.35);box-shadow:0 18px 36px rgba(0,0,0,.42)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.info-card:hover .card-cover img{transform:scale(1.04)}
.card-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,0) 42%,rgba(5,8,15,.86));
}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:16px;font-weight:600;color:var(--t1);line-height:1.55;margin-bottom:8px}
.card-desc{font-size:13.5px;color:var(--t2);line-height:1.75;margin-bottom:16px}
.card-meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--t3);
}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--t3);opacity:.6}

/* ---------- 侧栏 ---------- */
.article-side{display:none}
.side-box{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
  padding:20px 20px 18px;
  margin-bottom:18px;
}
.side-box:last-child{margin-bottom:0}
.side-title{
  font-size:14px;font-weight:700;color:var(--t1);
  letter-spacing:.04em;margin-bottom:14px;
  padding-bottom:12px;border-bottom:1px solid var(--line);
}
.side-list li + li{border-top:1px solid rgba(255,255,255,.05)}
.side-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;color:var(--t2);
  transition:color .22s ease-out,padding-left .22s ease-out;
}
.side-item:hover{color:var(--brand);padding-left:4px}
.side-item .idx{
  font-family:var(--mono);font-size:12px;color:var(--t3);min-width:20px;
}
.side-item .ver{font-family:var(--mono);font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums}
.side-text{font-size:13.5px;color:var(--t3);line-height:1.8}

/* ---------- 移动端吸底下载条 ---------- */
.mobile-download{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;
  padding:10px 18px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(5,8,15,.9);
  border-top:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
}
.mobile-download .btn{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--gap);
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:64px 0 28px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand p{font-size:14px;color:var(--t2);line-height:1.85;margin:16px 0 12px;max-width:300px}
.footer-brand .contact{font-size:13px;color:var(--t3);font-family:var(--mono)}
.footer-title{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;letter-spacing:.04em}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--t2)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:12px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px}
  .article-side{display:block;position:sticky;top:96px}
}
@media (min-width:1440px){
  .wrap{max-width:1280px}
}
@media (max-width:1200px){
  .article-body{max-width:100%}
}
@media (max-width:1023px){
  :root{--gap:72px}
  .nav-group{display:none}
  .nav-bar{grid-template-columns:auto 1fr auto;height:64px}
  .logo{justify-self:center;grid-column:2}
  .nav-toggle{display:inline-flex;grid-column:3;justify-self:end}
  .mobile-download{display:block}
  .site-footer{padding-bottom:96px}
}
@media (max-width:767px){
  :root{--gap:56px}
  .wrap{padding:0 20px}
  .article-main-card{padding:24px 20px 26px;border-radius:var(--r-card)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{margin-top:36px}
  .next-grid{grid-template-columns:minmax(0,1fr)}
  .cta-card{padding:24px 20px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{justify-content:center;text-align:center}
  .related .cell{flex:0 0 100%;max-width:100%}
}
@media (max-width:519px){
  .article-title{font-size:26px}
  .panel-link{padding:0 20px}
}

/* roulang page: category1 */
:root{
  --brand:#12E0C8;
  --brand-hi:#3BEFDA;
  --brand-ink:#05201E;
  --accent:#6C63FF;
  --amber:#FFC24B;
  --bg:#05080F;
  --bg-soft:#0A1018;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --t1:#EAF2F6;
  --t2:#A6B6C2;
  --t3:#6D7D8B;
  --ok:#35D07F;
  --warn:#FF7A59;
  --r-card:16px;
  --r-glass:20px;
  --r-badge:8px;
  --shadow-soft:0 20px 44px -26px rgba(0,0,0,.85);
  --shadow-glow:0 0 24px rgba(18,224,200,.45);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--bg);color:var(--t1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;top:-18vh;left:50%;transform:translateX(-50%);
  width:60vw;height:60vw;max-width:900px;max-height:900px;
  background:radial-gradient(circle,rgba(18,224,200,.08) 0%,rgba(18,224,200,0) 68%);
  pointer-events:none;z-index:0;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;background:transparent}
a:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(28px,4.6vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(22px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h3{font-size:19px;line-height:1.4;font-weight:600}
p{max-width:760px}
::selection{background:rgba(18,224,200,.28);color:#fff}

/* ---------- 布局容器 ---------- */
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px;position:relative;z-index:1}
.section{padding:96px 0;position:relative;z-index:1}
.section--soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head p{color:var(--t2);font-size:15px;margin-top:10px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;font-weight:600}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  border-bottom:1px solid transparent;
  transition:background .24s ease-out,border-color .24s ease-out,backdrop-filter .24s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;height:72px;
}
.nav-group{display:flex;align-items:center;gap:26px}
.nav-group.right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;color:var(--t2);padding:6px 0;white-space:nowrap;
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(18,224,200,.7);transform:scaleX(0);
  transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{display:inline-flex;align-items:center;gap:10px;justify-self:center;transition:transform .24s ease-out}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-hi) 100%);
  box-shadow:0 6px 18px -8px rgba(18,224,200,.9);
}
.logo-mark svg{width:18px;height:18px}
.logo-text{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--t1)}
.logo-text span{color:var(--brand)}
.site-header.is-scrolled .logo{transform:scale(.92)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;gap:5px;flex-direction:column;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{
  display:none;position:fixed;left:0;right:0;top:72px;z-index:88;
  background:rgba(5,8,15,.97);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);padding:12px 28px 24px;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .22s ease-out,transform .22s ease-out;
}
.mobile-panel.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.mobile-panel a{display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line);color:var(--t2);font-size:15px}
.mobile-panel a.is-active{color:var(--brand)}
.mobile-panel .btn{margin-top:18px;width:100%}
body.nav-open{overflow:hidden}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;padding:0 26px;height:44px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(100deg,var(--brand) 0%,#35F0D0 100%);
  color:var(--brand-ink);box-shadow:0 10px 26px -16px rgba(18,224,200,.9);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:var(--shadow-glow);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border:1px solid rgba(18,224,200,.4);color:var(--brand);border-radius:12px}
.btn-ghost:hover{background:rgba(18,224,200,.1);border-color:rgba(18,224,200,.7)}
.btn-line{background:transparent;border:1px solid var(--line-strong);color:var(--t1);border-radius:12px}
.btn-line:hover{border-color:rgba(18,224,200,.5);color:var(--brand)}
.btn-lg{height:52px;padding:0 34px;font-size:16px}
.btn-md{height:44px}
.btn-sm{height:36px;padding:0 18px;font-size:14px}
.btn-arrow::after{content:"→";font-size:15px;transition:transform .2s ease-out}
.btn-arrow:hover::after{transform:translateX(3px)}
.link-inline{color:var(--brand);border-bottom:1px solid rgba(18,224,200,.3);transition:border-color .2s ease-out}
.link-inline:hover{border-bottom-color:var(--brand)}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-top:24px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t3)}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li:not(:last-child)::after{content:"/";color:rgba(255,255,255,.2)}
.breadcrumb a{color:var(--t3);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--t2)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:40px 0 88px;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.34;z-index:0;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(180deg,rgba(5,8,15,.86) 0%,rgba(5,8,15,.94) 62%,var(--bg) 100%),
    linear-gradient(90deg,rgba(5,8,15,.92) 0%,rgba(5,8,15,.55) 60%,rgba(5,8,15,.9) 100%);
}
.hero-grid{
  position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero-copy h1{margin:20px 0 16px;max-width:620px}
.hero-copy h1 em{font-style:normal;color:var(--brand);display:inline-block}
.hero-sub{font-size:17px;color:var(--t2);line-height:1.8;max-width:600px}
.hero-desc{margin-top:18px;font-size:15px;color:var(--t3);line-height:1.9;max-width:640px}
.hero-cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--t2);
  border:1px solid var(--line);background:var(--glass);border-radius:999px;padding:6px 14px;
  font-variant-numeric:tabular-nums;
}
.chip b{color:var(--t1);font-weight:600}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(18,224,200,.9)}
.hero-visual{position:relative}
.hero-shot{
  position:relative;border-radius:var(--r-glass);overflow:hidden;
  border:1px solid rgba(18,224,200,.28);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.95),0 0 40px -20px rgba(18,224,200,.55);
  background:var(--bg-soft);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-seal{
  position:absolute;right:-8px;bottom:-14px;width:84px;height:84px;border-radius:16px;
  background:linear-gradient(140deg,rgba(108,99,255,.28),rgba(18,224,200,.18));
  border:1px solid rgba(18,224,200,.25);display:grid;place-items:center;
  font-size:26px;font-weight:800;color:rgba(234,242,246,.55);opacity:.9;
}

/* ---------- 数据条 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--glass);
  padding:24px 22px;transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(18,224,200,.35);box-shadow:var(--shadow-soft)}
.stat-num{font-size:32px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--brand);letter-spacing:-.02em;line-height:1.1}
.stat-num small{font-size:15px;color:var(--t2);margin-left:4px;font-weight:500}
.stat-label{margin-top:8px;font-size:13px;color:var(--t3)}

/* ---------- 目录 + 内容区 ---------- */
.doc-layout{display:grid;grid-template-columns:3fr 9fr;gap:44px;align-items:start}
.toc-col{position:sticky;top:104px}
.toc-card{
  border:1px solid var(--line);border-radius:var(--r-glass);padding:22px 20px;
  background:linear-gradient(180deg,rgba(18,224,200,.06),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
}
.toc-title{font-size:13px;letter-spacing:.1em;color:var(--t3);margin-bottom:14px;font-weight:600}
.toc-list li+li{border-top:1px solid var(--line)}
.toc-link{display:block;padding:12px 0;font-size:14px;color:var(--t2);transition:color .2s ease-out,padding-left .2s ease-out}
.toc-link:hover{color:var(--brand);padding-left:6px}
.toc-note{margin-top:18px;font-size:12.5px;color:var(--t3);line-height:1.8;border-top:1px dashed var(--line);padding-top:14px}
.doc-col{display:flex;flex-direction:column;gap:56px;min-width:0}
.doc-block{
  display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;
  scroll-margin-top:110px;
  border:1px solid var(--line);border-radius:var(--r-glass);padding:28px;
  background:rgba(255,255,255,.02);
  transition:border-color .24s ease-out,box-shadow .24s ease-out,transform .24s ease-out;
}
.doc-block:hover{border-color:rgba(18,224,200,.3);box-shadow:var(--shadow-soft);transform:translateY(-3px)}
.doc-block.alt{grid-template-columns:7fr 5fr}
.doc-block.alt .doc-figure{order:2}
.doc-figure{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--bg-soft)}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.doc-text h2{font-size:23px;margin-bottom:14px}
.doc-text p{font-size:15.5px;color:var(--t2);line-height:1.9}
.doc-text p+p{margin-top:12px}
.tick-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.tick-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--t2);font-variant-numeric:tabular-nums}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
}
.doc-tag{
  display:inline-block;margin-bottom:12px;font-size:12px;padding:3px 10px;border-radius:var(--r-badge);
  background:rgba(108,99,255,.16);color:#BFBAFF;border:1px solid rgba(108,99,255,.3);
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--brand),rgba(18,224,200,.05))}
.tl-item{position:relative;padding:0 0 30px 0}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-28px;top:8px;width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:2px solid var(--brand);box-shadow:0 0 14px rgba(18,224,200,.55);
}
.tl-ver{font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--t1)}
.tl-ver span{font-size:12px;font-weight:500;color:var(--t3);margin-left:10px}
.tl-text{margin-top:6px;font-size:14.5px;color:var(--t2);line-height:1.85;max-width:720px}

/* ---------- 下载卡 ---------- */
.download-card{
  border:1px solid rgba(18,224,200,.24);border-radius:var(--r-glass);
  background:
    radial-gradient(700px 260px at 50% 0%,rgba(18,224,200,.12),transparent 70%),
    var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  padding:52px 40px;text-align:center;box-shadow:var(--shadow-soft);
}
.download-card h2{margin-bottom:12px}
.download-card>p{margin:0 auto;color:var(--t2);font-size:15.5px}
.dl-buttons{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:28px}
.dl-verify{
  margin-top:24px;font-size:12.5px;color:var(--t3);font-variant-numeric:tabular-nums;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;line-height:2;
}
.dl-verify b{color:var(--t2);font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:18px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--t1);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transition:transform .24s ease-out;
}
.faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(45deg)}
.faq-item.is-open .faq-icon::before{transform:translate(-50%,-50%) rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a p{font-size:15px;color:var(--t2);line-height:1.85;padding:0 40px 20px 0}
.faq-q:focus-visible{outline-offset:-2px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:64px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--t3);line-height:1.85;max-width:280px}
.footer-brand .contact{margin-top:14px;font-size:13px;color:var(--t3)}
.footer-title{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px}
.footer-links li+li{margin-top:10px}
.footer-links a{font-size:13.5px;color:var(--t3);transition:color .2s ease-out}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  font-size:12px;color:var(--t3);line-height:1.9;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .doc-layout{grid-template-columns:1fr;gap:32px}
  .toc-col{position:static}
  .toc-card{padding:18px}
  .toc-list{display:flex;flex-wrap:wrap;gap:8px}
  .toc-list li+li{border-top:0}
  .toc-link{padding:8px 14px;border:1px solid var(--line);border-radius:999px;font-size:13.5px}
  .toc-link:hover{padding-left:14px;border-color:rgba(18,224,200,.4)}
}
@media (max-width:1023px){
  .nav-group{display:none}
  .nav-toggle{display:flex}
  .header-inner{grid-template-columns:auto 1fr auto;height:64px}
  .logo{grid-column:2;justify-self:center}
  .nav-toggle{grid-column:3;justify-self:end}
  .mobile-panel{display:block;top:64px}
  .section{padding:72px 0}
  .hero{padding:24px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .doc-block,.doc-block.alt{grid-template-columns:1fr;gap:22px;padding:22px}
  .doc-block.alt .doc-figure{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .hero{padding:16px 0 48px}
  h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-card{padding:18px 16px}
  .stat-num{font-size:26px}
  .download-card{padding:34px 22px}
  .dl-buttons{flex-direction:column}
  .dl-buttons .btn{width:100%}
  .faq-a p{padding-right:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-seal{width:64px;height:64px;font-size:20px;right:6px;bottom:-10px}
}

/* roulang page: category3 */
:root{
  --brand:#12E0C8;
  --brand-hi:#3BEFDA;
  --brand-ink:#05201E;
  --accent:#6C63FF;
  --amber:#FFC24B;
  --ok:#35D07F;
  --warn:#FF7A59;
  --bg:#05080F;
  --bg-soft:#0A1018;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --t1:#EAF2F6;
  --t2:#A6B6C2;
  --t3:#6D7D8B;
  --r-card:16px;
  --r-glass:20px;
  --r-pill:999px;
  --r-btn2:12px;
  --r-badge:8px;
  --sp-desktop:96px;
  --sp-tablet:72px;
  --sp-mobile:56px;
  --wrap:1200px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  top:-22vh;left:50%;
  transform:translateX(-50%);
  width:60vw;height:60vw;
  max-width:900px;max-height:900px;
  background:radial-gradient(circle,rgba(18,224,200,.08) 0%,rgba(18,224,200,0) 66%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .22s ease-out}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 28px;
  position:relative;
  z-index:1;
}
@media (min-width:1440px){.wrap{max-width:1280px}}
.section{padding:var(--sp-desktop) 0;position:relative;z-index:1}
.section--soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:38px;max-width:760px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--brand);
  background:rgba(18,224,200,.08);
  border:1px solid rgba(18,224,200,.26);
  border-radius:var(--r-badge);
  padding:5px 12px;margin-bottom:16px;
}
.sec-title{
  font-size:clamp(22px,3vw,34px);
  line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.sec-desc{color:var(--t2);font-size:16px;margin-top:14px;max-width:760px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,8,15,.55);
  border-bottom:1px solid transparent;
  transition:background .24s ease-out,border-color .24s ease-out,backdrop-filter .24s ease-out;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:18px;
}
.nav-group{display:flex;align-items:center;gap:26px}
.nav-group.left{justify-content:flex-start}
.nav-group.right{justify-content:flex-end}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--t2);
  padding:8px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;
  height:2px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(18,224,200,.75);
  transform:scaleX(0);transform-origin:center;
  transition:transform .24s ease-out;
}
.nav-link:hover{color:var(--t1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.logo-mark{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#12E0C8,#35F0D0 55%,#6C63FF);
  box-shadow:0 6px 20px rgba(18,224,200,.28);
  transition:transform .24s ease-out;
}
.logo-mark svg{width:22px;height:22px;display:block}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--t1)}
.logo-text span{color:var(--brand)}
.site-header.is-scrolled .logo-mark{transform:scale(.9)}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  color:var(--t1);
  align-items:center;justify-content:center;
  font-size:18px;
}
.nav-toggle:hover{border-color:rgba(18,224,200,.4);color:var(--brand)}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(5,8,15,.96);
  backdrop-filter:blur(16px);
  padding:14px 0 22px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 28px;font-size:16px;color:var(--t2);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.m-link.is-active{color:var(--brand)}
.mobile-panel .m-cta{padding:18px 28px 0}
@media (max-width:1023px){
  .nav-group,.site-header .logo{display:none}
  .header-inner{grid-template-columns:44px 1fr 44px;height:64px}
  .header-inner .brand-mobile{display:inline-flex;justify-self:center}
  .nav-toggle{display:inline-flex;justify-self:end}
}
.brand-mobile{display:none}
@media (max-width:1023px){.brand-mobile{display:inline-flex;align-items:center;gap:9px}}
@media (min-width:1024px){.brand-mobile{display:none}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-pill);
  padding:0 28px;height:44px;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,color .22s ease-out,border-color .22s ease-out;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-lg{height:52px;padding:0 34px;font-size:16px}
.btn-md{height:44px}
.btn-sm{height:36px;padding:0 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(90deg,#12E0C8,#35F0D0);
  color:var(--brand-ink);
  box-shadow:0 8px 26px rgba(18,224,200,.2);
}
.btn-primary:hover{
  color:var(--brand-ink);
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 0 24px rgba(18,224,200,.45);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:rgba(18,224,200,.4);
  border-radius:var(--r-btn2);
}
.btn-ghost:hover{background:rgba(18,224,200,.1);color:var(--brand);transform:translateY(-1px)}
.btn-line{
  background:transparent;color:var(--t2);
  border-color:var(--line-strong);
  border-radius:var(--r-btn2);
}
.btn-line:hover{color:var(--t1);border-color:rgba(18,224,200,.4)}
@media (max-width:640px){
  .btn{width:100%;padding:0 20px}
  .btn-inline-mobile{width:auto}
}

/* ============ 面包屑 / 顶部 ============ */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,8,15,.86) 0%,rgba(5,8,15,.94) 60%,var(--bg) 100%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 24px);
}
.page-hero .wrap{position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);margin-bottom:22px;
}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--t3)}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);
  background:rgba(108,99,255,.12);
  border:1px solid rgba(108,99,255,.36);
  border-radius:var(--r-badge);
  padding:6px 13px;margin-bottom:18px;
}
.hero-tag i{color:var(--amber)}
h1{
  font-size:clamp(28px,4.6vw,52px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
  max-width:900px;
}
h1 .hl{
  background:linear-gradient(92deg,#12E0C8,#6C63FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  margin-top:20px;max-width:760px;
  font-size:16px;line-height:1.85;color:var(--t2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin-top:26px;font-size:13px;color:var(--t3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta b{color:var(--t2);font-weight:600;font-variant-numeric:tabular-nums}

/* ============ 规格条 ============ */
.spec-bar{
  border:1px solid var(--line);
  border-radius:var(--r-glass);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:26px 28px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px 26px;
}
.spec-item{border-left:1px solid var(--line);padding-left:20px}
.spec-item:first-child{border-left:none;padding-left:0}
.spec-item dt{font-size:13px;color:var(--t3);letter-spacing:.02em}
.spec-item dd{
  margin:6px 0 0;font-size:16px;font-weight:600;color:var(--t1);
  font-variant-numeric:tabular-nums;line-height:1.5;
}
.spec-item dd small{display:block;font-size:13px;font-weight:400;color:var(--t2);margin-top:4px}
@media (max-width:1023px){
  .spec-bar{grid-template-columns:repeat(2,1fr);gap:22px 20px}
  .spec-item:nth-child(3){border-left:none;padding-left:0}
}
@media (max-width:600px){
  .spec-bar{grid-template-columns:1fr;padding:22px}
  .spec-item{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:16px}
  .spec-item:first-child{border-top:none;padding-top:0}
}

/* ============ 瀑布卡片 ============ */
.waterfall{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.tcard{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
  display:flex;flex-direction:column;
}
.tcard:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,200,.35);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
}
.tcard-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0d1520}
.tcard-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.tcard:hover .tcard-cover img{transform:scale(1.04)}
.tcard-cover::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(5,8,15,0),rgba(5,8,15,.78));
}
.tcard-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.tcard h3{font-size:19px;font-weight:600;line-height:1.4}
.tcard p{font-size:14.5px;color:var(--t2);line-height:1.75}
.tcard .fix{
  margin-top:auto;
  font-size:13px;color:var(--t3);
  border-top:1px dashed var(--line);
  padding-top:12px;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;padding:3px 9px;border-radius:var(--r-badge);
  border:1px solid rgba(108,99,255,.4);
  background:rgba(108,99,255,.14);
  color:#B8B4FF;
}
.badge.green{border-color:rgba(18,224,200,.36);background:rgba(18,224,200,.1);color:var(--brand)}
.badge.amber{border-color:rgba(255,194,75,.36);background:rgba(255,194,75,.12);color:var(--amber)}
.tcard time{font-variant-numeric:tabular-nums}
@media (max-width:1023px){
  .waterfall{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .waterfall{grid-template-columns:1fr;gap:18px}
}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  transition:border-color .24s ease-out,transform .24s ease-out;
}
.step:hover{border-color:rgba(18,224,200,.35);transform:translateY(-4px)}
.step-no{
  font-family:var(--mono);
  font-size:14px;font-weight:700;
  color:var(--brand);
  letter-spacing:.08em;
  display:inline-block;
  padding:2px 10px;
  border:1px solid rgba(18,224,200,.32);
  border-radius:var(--r-badge);
  background:rgba(18,224,200,.08);
}
.step h3{font-size:17px;font-weight:600;margin:14px 0 8px}
.step p{font-size:14px;color:var(--t2);line-height:1.8}
@media (max-width:1023px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-list{max-width:920px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 4px;
  text-align:left;font-size:16px;font-weight:600;color:var(--t1);
  transition:color .22s ease-out;
}
.faq-q:hover{color:var(--brand)}
.faq-ico{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform .24s ease-out;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-ico::before{left:0;right:0;top:8px;height:1.6px}
.faq-ico::after{top:0;bottom:0;left:8px;width:1.6px}
.faq-item.is-open .faq-ico{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease-out;
}
.faq-a p{
  font-size:15px;color:var(--t2);line-height:1.8;
  padding:0 4px 22px;max-width:820px;
}
.faq-a p + p{padding-top:0}
.faq-a a{color:var(--brand)}
.faq-a a:hover{text-decoration:underline}

/* ============ CTA ============ */
.cta-card{
  border:1px solid rgba(18,224,200,.24);
  border-radius:var(--r-glass);
  background:
    radial-gradient(120% 140% at 12% 0%,rgba(18,224,200,.14),rgba(18,224,200,0) 58%),
    radial-gradient(120% 140% at 88% 100%,rgba(108,99,255,.18),rgba(108,99,255,0) 60%),
    rgba(255,255,255,.04);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:52px 44px;
  text-align:center;
}
.cta-card h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3}
.cta-card p{color:var(--t2);max-width:680px;margin:16px auto 0;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}
.cta-note{
  margin-top:22px;font-size:12px;color:var(--t3);
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  word-break:break-all;
}
@media (max-width:640px){.cta-card{padding:36px 22px}.cta-actions .btn{width:100%}}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-soft);
  padding:66px 0 28px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand p{color:var(--t2);font-size:14px;margin-top:14px;max-width:300px;line-height:1.8}
.footer-brand .contact{color:var(--t3);font-size:13px;margin-top:12px}
.footer-title{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;letter-spacing:.02em}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:var(--t2)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 26px;
  font-size:12px;color:var(--t3);
}
.footer-bottom span:last-child{flex-basis:100%;line-height:1.7}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{justify-content:center;text-align:center}
}
@media (max-width:640px){
  .section{padding:var(--sp-mobile) 0}
  .wrap{padding:0 20px}
  .page-hero{padding:44px 0 54px}
  body{font-size:16px}
}
@media (min-width:641px) and (max-width:1023px){
  .section{padding:var(--sp-tablet) 0}
}

/* roulang page: category2 */
:root{
  --brand:#12E0C8;
  --brand-h:#3BEFDA;
  --accent:#6C63FF;
  --amber:#FFC24B;
  --bg:#05080F;
  --bg-soft:#0A1018;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.08);
  --t1:#EAF2F6;
  --t2:#A6B6C2;
  --t3:#6D7D8B;
  --ok:#35D07F;
  --warn:#FF7A59;
  --r-card:16px;
  --r-glass:20px;
  --r-pill:999px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --sec:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  top:-24vh;left:50%;
  width:min(60vw,900px);height:min(60vw,900px);
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(18,224,200,.075),transparent 62%);
  pointer-events:none;
  z-index:0;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{border:0;background:none;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(18,224,200,.28)}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 28px;
  position:relative;
  z-index:1;
}
@media (min-width:1440px){.wrap{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,8,15,.55);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,15,.82);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:14px;
  height:72px;
}
.nav-group{display:flex;align-items:center;gap:6px}
.nav-group.right{justify-content:flex-end}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  border-radius:10px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(18,224,200,.8);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  letter-spacing:-.01em;
  transition:transform .25s ease;
}
.logo-mark{
  width:34px;height:34px;
  border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  box-shadow:0 6px 18px rgba(18,224,200,.28);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:19px;color:var(--t1)}
.logo-text span{color:var(--brand)}
.site-header.is-scrolled .logo{transform:scale(.94)}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--t1);
  background:rgba(255,255,255,.04);
  justify-self:end;
}
.menu-toggle i{font-size:17px}

.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(5,8,15,.97);
  backdrop-filter:blur(16px);
  padding:10px 0 20px;
}
.mobile-panel.open{display:block}
.mobile-panel a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:48px;
  padding:0 28px;
  color:var(--t2);
  font-size:15.5px;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.mobile-panel a.is-active{color:var(--brand)}
.mobile-panel .m-cta{margin:16px 28px 0;display:block}
.mobile-panel .m-cta a{height:auto;justify-content:center;border:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-weight:600;
  font-size:15.5px;
  border-radius:var(--r-pill);
  padding:0 26px;
  height:44px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(100deg,#12E0C8,#35F0D0);
  color:#05201E;
}
.btn-primary:hover{
  color:#05201E;
  transform:translateY(-1px);
  box-shadow:0 0 24px rgba(18,224,200,.45);
  filter:brightness(1.08);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border:1px solid rgba(18,224,200,.4);
  border-radius:12px;
}
.btn-ghost:hover{background:rgba(18,224,200,.1);color:var(--brand)}
.btn-lg{height:52px;padding:0 34px;font-size:16px}
.btn-md{height:44px}
.btn-sm{height:36px;padding:0 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  min-height:268px;
  display:flex;
  align-items:center;
  padding:52px 0 44px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.88),rgba(5,8,15,.96)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.7;
  pointer-events:none;
}
.cat-hero .wrap{text-align:center}
.crumb{
  font-size:13px;
  color:var(--t3);
  margin-bottom:14px;
  letter-spacing:.01em;
}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{margin:0 8px;opacity:.6}
.cat-hero h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:12px;
}
.cat-hero h1 em{font-style:normal;color:var(--brand)}
.cat-sub{
  max-width:560px;
  margin:0 auto;
  color:var(--t2);
  font-size:16px;
}
.hero-meta{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:center;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:8px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:13px;
  color:var(--t2);
}
.chip i{color:var(--brand);font-size:12px}

/* ---------- generic section ---------- */
.section{padding:var(--sec) 0;position:relative;z-index:1}
.section.soft{background:var(--bg-soft);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand);
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-bottom:12px;
}
.sec-kicker::before{
  content:"";
  width:18px;height:2px;
  background:var(--brand);
  border-radius:2px;
}
.sec-head h2{
  font-size:clamp(22px,3vw,32px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.015em;
  margin-bottom:12px;
}
.sec-head p{color:var(--t2);font-size:16px}
.sec-head .inline-link{color:var(--brand);border-bottom:1px solid rgba(18,224,200,.35)}
.sec-head .inline-link:hover{border-bottom-color:var(--brand)}

/* ---------- timeline ---------- */
.timeline{
  position:relative;
  padding-top:6px;
}
.timeline::before{
  content:"";
  position:absolute;
  top:0;bottom:0;left:50%;
  width:1px;
  transform:translateX(-.5px);
  background:linear-gradient(180deg,rgba(18,224,200,.45),rgba(108,99,255,.35),rgba(255,255,255,.06));
}
.tl-item{
  display:grid;
  grid-template-columns:1fr 92px 1fr;
  align-items:start;
  margin-bottom:52px;
}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  grid-column:2;
  grid-row:1;
  justify-self:center;
  width:52px;height:52px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:15px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:#05201E;
  background:linear-gradient(140deg,#12E0C8,#6C63FF);
  box-shadow:0 0 0 6px rgba(5,8,15,1),0 0 24px rgba(18,224,200,.28);
  position:relative;
  z-index:2;
}
.tl-card{
  grid-column:3;
  grid-row:1;
  border-radius:var(--r-glass);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;
  transition:transform .25s ease-out,border-color .25s ease,box-shadow .25s ease;
}
.tl-item:nth-child(even) .tl-card{grid-column:1}
.tl-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,200,.35);
  box-shadow:var(--shadow);
}
.tl-media{aspect-ratio:16/9;overflow:hidden;background:#08111a}
.tl-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .3s ease-out;
}
.tl-card:hover .tl-media img{transform:scale(1.03)}
.tl-body{padding:24px 26px 26px}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:8px;
  font-size:12.5px;
  color:#EDE9FF;
  background:rgba(108,99,255,.22);
  border:1px solid rgba(108,99,255,.4);
  margin-bottom:12px;
}
.tag.brand{color:#05201E;background:rgba(18,224,200,.85);border-color:transparent}
.tl-body h3{
  font-size:20px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.tl-body p{color:var(--t2);font-size:15.5px;margin-bottom:14px}
.points li{
  position:relative;
  padding-left:20px;
  color:var(--t2);
  font-size:14.8px;
  line-height:1.8;
  margin-bottom:6px;
}
.points li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand);
  transform:rotate(45deg);
}
.points li strong{color:var(--t1);font-weight:600}
.inline-link{color:var(--brand);border-bottom:1px solid rgba(18,224,200,.35)}
.inline-link:hover{border-bottom-color:var(--brand)}

/* ---------- spec bar ---------- */
.spec-bar{
  border-radius:var(--r-glass);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  padding:28px 30px;
}
.spec-bar dl{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.spec-bar dt{
  font-size:13px;
  color:var(--t3);
  margin-bottom:6px;
}
.spec-bar dd{
  font-size:17px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  color:var(--t1);
  letter-spacing:-.01em;
}
.spec-bar .note{margin-top:20px;color:var(--t2);font-size:14.5px}

/* ---------- stats ---------- */
.stats{margin-top:4px}
.stat{
  height:100%;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  padding:22px 20px;
  transition:border-color .25s ease,transform .25s ease-out;
}
.stat:hover{border-color:rgba(18,224,200,.32);transform:translateY(-3px)}
.stat b{
  display:block;
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  color:var(--brand);
  margin-bottom:6px;
}
.stat span{font-size:13.5px;color:var(--t2)}

/* ---------- scroll row ---------- */
.scroll-row{
  display:flex;
  gap:18px;
  overflow-x:auto;
  padding:4px 28px 18px;
  margin:0 -28px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.scroll-row::-webkit-scrollbar{height:6px}
.scroll-row::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:6px}
.play-card{
  flex:0 0 292px;
  scroll-snap-align:start;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:transform .25s ease-out,border-color .25s ease,box-shadow .25s ease;
}
.play-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,200,.35);
  box-shadow:var(--shadow);
}
.play-cover{aspect-ratio:16/9;overflow:hidden}
.play-cover img{width:100%;height:100%;object-fit:cover}
.play-body{padding:18px 20px 20px}
.play-body h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:8px}
.play-body p{font-size:14px;color:var(--t2);margin-bottom:12px}
.play-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--t3);
}
.play-meta .badge-amber{
  display:inline-flex;align-items:center;gap:5px;
  color:#2a1c00;
  background:var(--amber);
  border-radius:6px;
  padding:1px 7px;
  font-weight:600;
  font-size:12px;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:16px 4px;
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:20px;
  font-weight:400;
  color:var(--brand);
  transition:transform .24s ease-out;
  line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-a{
  padding:0 4px 22px;
  color:var(--t2);
  font-size:15px;
  line-height:1.8;
  max-width:760px;
}
.faq-a a{color:var(--brand);border-bottom:1px solid rgba(18,224,200,.35)}

/* ---------- CTA ---------- */
.cta-card{
  border-radius:var(--r-glass);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  padding:44px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-card::before{
  content:"";
  position:absolute;
  top:-120px;left:50%;
  width:420px;height:280px;
  transform:translateX(-50%);
  background:radial-gradient(circle,rgba(18,224,200,.16),transparent 70%);
  pointer-events:none;
}
.cta-card h2{
  font-size:clamp(22px,3vw,30px);
  font-weight:700;
  letter-spacing:-.015em;
  margin-bottom:12px;
  position:relative;
}
.cta-card p{
  color:var(--t2);
  max-width:620px;
  margin:0 auto 26px;
  position:relative;
}
.cta-card .btn-row{justify-content:center;position:relative}
.checksum{
  margin-top:20px;
  font-size:12.5px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  letter-spacing:.02em;
  position:relative;
}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:#04070C;
  padding:56px 0 26px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:34px;
}
.footer-brand p{color:var(--t2);font-size:14.5px;margin:14px 0 10px;max-width:280px}
.contact{font-size:13px;color:var(--t3);word-break:break-all}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:14px;
}
.footer-links li{margin-bottom:9px}
.footer-links a{font-size:14px;color:var(--t2)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  font-size:12px;
  color:var(--t3);
}
.footer-bottom span:last-child{flex:1 1 320px}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec:72px}
  .nav-group{display:none}
  .menu-toggle{display:flex;align-items:center;justify-content:center}
  .nav-wrap{grid-template-columns:44px 1fr 44px;height:64px}
  .logo{justify-self:center;transform:none !important}
  .timeline::before{left:23px;transform:none}
  .tl-item{grid-template-columns:52px 1fr;margin-bottom:34px;column-gap:16px}
  .tl-dot{grid-column:1 !important;grid-row:1 !important;justify-self:start;width:46px;height:46px;font-size:14px}
  .tl-card{grid-column:2 !important;grid-row:1 !important}
  .spec-bar dl{grid-template-columns:repeat(2,1fr);gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .scroll-row{padding:4px 28px 18px}
}
@media (max-width:639px){
  :root{--sec:56px}
  body{font-size:16px;line-height:1.85}
  .wrap{padding:0 20px}
  .cat-hero{min-height:0;padding:40px 0 34px}
  .cat-hero h1{font-size:26px}
  .cat-sub{font-size:15px}
  .sec-head{margin-bottom:28px}
  .tl-body{padding:20px 18px 22px}
  .tl-body h3{font-size:18px}
  .spec-bar{padding:22px 20px}
  .spec-bar dl{grid-template-columns:1fr 1fr}
  .spec-bar dd{font-size:15.5px}
  .play-card{flex:0 0 78%}
  .scroll-row{padding:4px 20px 16px;margin:0 -20px}
  .btn-row .btn{width:100%}
  .cta-card{padding:30px 22px}
  .faq-item summary{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}