/* roulang page: index */
:root{
  --bg:#070D1B;
  --surface:#0C162C;
  --surface-deep:#050A17;
  --surface-2:#101D38;
  --glass:rgba(255,255,255,0.055);
  --glass-2:rgba(255,255,255,0.09);
  --line:rgba(255,255,255,0.08);
  --border-light:rgba(255,255,255,0.14);
  --text:#EAF1FF;
  --muted:#A9BBDB;
  --weak:#6F83A9;
  --primary:#27E6C3;
  --primary-soft:rgba(39,230,195,0.12);
  --cta:#24E2A4;
  --cta-light:#98FF9B;
  --amber:#FFC857;
  --danger:#FF8793;
  --radius-xl:22px;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-large:0 24px 60px rgba(0,0,0,0.25);
  --shadow-card:0 12px 38px rgba(0,0,0,0.18);
  --transition:all .28s ease;
  --content-width:1240px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  background:
    radial-gradient(circle at 8% 6%,rgba(39,230,195,0.08),transparent 28%),
    radial-gradient(circle at 92% 18%,rgba(152,255,155,0.05),transparent 26%),
    var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:var(--transition)}
a,button,input,summary{cursor:pointer}
img{display:block;max-width:100%;border:0}
ul,ol{list-style:none}
h1,h2,h3,h4{color:#F3F7FF;font-weight:700;line-height:1.25}
p{color:var(--muted)}
button{border:0;background:none;font:inherit;color:inherit}
.grid-container{max-width:var(--content-width);margin:0 auto;padding-left:24px;padding-right:24px}
.grid-x{display:flex;flex-wrap:wrap}
.cell{width:100%}
.large-5{width:100%}
.large-7{width:100%}
.medium-6{width:100%}
.large-4{width:100%}
@media (min-width:900px){
  .cell{flex:0 0 auto}
  .large-5{width:41.66%}
  .large-7{width:58.33%}
  .large-4{width:33.33%}
  .medium-6{width:50%}
}
.site-topbar{
  background:rgba(3,7,16,0.78);
  border-bottom:1px solid rgba(255,255,255,0.06);
  font-size:13px;
  color:var(--weak);
}
.topbar-inner{
  max-width:var(--content-width);
  margin:0 auto;
  padding:7px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.topbar-meta{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-meta span:first-child{color:#7E90B0;font-weight:600;letter-spacing:.03em}
.topbar-mini{color:var(--weak);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:6px}
.topbar-actions a{color:var(--muted);padding:4px 8px;border-radius:6px;font-size:13px}
.topbar-actions a:hover{color:var(--primary)}
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(6,11,22,0.78);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.header-inner{
  max-width:var(--content-width);
  margin:0 auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
}
.brand{
  display:flex;
  align-items:baseline;
  gap:12px;
  flex-shrink:0;
  line-height:1.2;
}
.brand-name{
  font-size:21px;
  font-weight:800;
  color:#FFFFFF;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-name::first-letter{color:var(--primary)}
.brand small{
  color:var(--weak);
  font-size:12px;
  font-weight:400;
  letter-spacing:.05em;
  white-space:nowrap;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-link{
  position:relative;
  color:var(--muted);
  font-size:15px;
  line-height:1;
  padding:13px 2px;
  font-weight:500;
}
.nav-link:hover{color:#EAF1FF}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;
  bottom:2px;
  width:100%;
  height:2px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--primary),rgba(39,230,195,0.1));
  box-shadow:0 0 12px rgba(39,230,195,0.8);
}
.site-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  font-weight:700;
  border-radius:12px;
  line-height:1;
  text-align:center;
  transition:var(--transition);
  border:1px solid transparent;
}
.btn i{font-size:.92em}
.btn-sm{padding:10px 15px;font-size:14px}
.btn-md{padding:14px 22px;font-size:15px}
.btn-lg{padding:17px 30px;font-size:16px}
.btn-cta{
  background:linear-gradient(135deg,#24E2A4,#27E6C3);
  color:#03160D;
  border:0;
  box-shadow:
    0 0 20px rgba(36,226,164,0.25),
    0 0 44px rgba(39,230,195,0.12);
}
.btn-cta:hover{
  transform:translateY(-2px);
  box-shadow:
    0 0 30px rgba(36,226,164,0.42),
    0 0 58px rgba(39,230,195,0.22);
  color:#03160D;
}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(39,230,195,0.03);
  border-color:rgba(39,230,195,0.4);
  color:#EAF6F3;
}
.btn-ghost:hover{
  background:rgba(39,230,195,0.11);
  border-color:var(--primary);
  color:#FFFFFF;
  box-shadow:0 0 24px rgba(39,230,195,0.14);
  transform:translateY(-2px);
}
.btn-dark{
  background:rgba(255,255,255,0.07);
  color:#E7EDFA;
  border:1px solid rgba(255,255,255,0.14);
}
.btn-dark:hover{background:rgba(255,255,255,0.12);color:#fff;border-color:rgba(255,255,255,0.28)}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.1);
  color:#E6F0FF;
  align-items:center;
  justify-content:center;
  font-size:19px;
}
.nav-toggle:focus-visible,button:focus-visible,a:focus-visible,summary:focus-visible{
  outline:3px solid rgba(39,230,195,0.45);
  outline-offset:3px;
}
.hero{
  position:relative;
  padding:96px 0 100px;
  overflow:hidden;
  background-size:cover;
  background-position:center;
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(6,11,22,0.92) 0%,rgba(6,11,22,0.74) 38%,rgba(6,11,22,0.55) 100%),
    radial-gradient(circle at 16% 35%,rgba(39,230,195,0.16),transparent 32%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;align-items:center}
.hero-copy{max-width:720px}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(39,230,195,0.1);
  border:1px solid rgba(39,230,195,0.24);
  color:#8FF4DE;
  font-size:13px;
  padding:7px 14px;
  border-radius:100px;
  letter-spacing:.03em;
  margin-bottom:24px;
}
.hero h1{
  font-size:48px;
  font-weight:800;
  line-height:1.18;
  letter-spacing:0;
  color:#FFFFFF;
  margin-bottom:24px;
}
.hero h1 .accent-line{
  display:inline-block;
  color:var(--primary);
  position:relative;
}
.hero-lead{
  font-size:18px;
  color:#B9C9E4;
  max-width:620px;
  line-height:1.9;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px 18px;
}
.hero-proof{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  margin-top:42px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,0.1);
  max-width:640px;
}
.hero-proof span{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:#C9D6EB;
  font-size:13px;
}
.hero-proof i{color:var(--primary);font-size:15px}
.hero-visual{
  position:relative;
  padding:10px 0 10px 30px;
}
.hero-panel{
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.14);
  border-radius:26px;
  padding:12px;
  box-shadow:0 32px 80px rgba(0,0,0,0.25),inset 0 1px rgba(255,255,255,0.12);
}
.hero-panel img{
  width:100%;
  height:320px;
  object-fit:cover;
  border-radius:18px;
}
.panel-note{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 12px 10px;
  font-size:13px;
  color:#D8E4F5;
}
.panel-note .text{display:flex;align-items:center;gap:8px}
.panel-note .light-dot{width:7px;height:7px;background:#4EF0BE;border-radius:50%;box-shadow:0 0 12px #4EF0BE;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.section{
  padding:82px 0;
  position:relative;
}
.section-alt{background:rgba(255,255,255,0.016);border-top:1px solid rgba(255,255,255,0.05);border-bottom:1px solid rgba(255,255,255,0.05)}
.section-head{
  max-width:760px;
  margin-bottom:52px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  background:rgba(39,230,195,0.08);
  padding:6px 13px;
  border-radius:8px;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--primary);border-radius:50%}
.section-head h2{
  font-size:32px;
  line-height:1.3;
  color:#F1F6FF;
  font-weight:800;
  letter-spacing:-.01em;
}
.section-head p{
  margin-top:14px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.value-shell{
  display:grid;
  grid-template-columns:1.04fr .96fr;
  gap:26px;
  align-items:stretch;
}
.glass-card{
  background:rgba(255,255,255,0.055);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--radius-xl);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.value-primary{
  position:relative;
  padding:28px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
}
.value-primary::after{
  content:"";
  position:absolute;
  top:-80px;
  right:-60px;
  width:240px;
  height:240px;
  background:radial-gradient(circle,rgba(39,230,195,0.15),transparent 65%);
}
.value-primary img{
  width:100%;
  height:220px;
  object-fit:cover;
  border-radius:16px;
  margin-bottom:28px;
  border:1px solid rgba(255,255,255,0.1);
}
.value-primary h3{
  font-size:22px;
  line-height:1.45;
  margin-bottom:14px;
}
.value-primary p{
  font-size:15px;
  line-height:1.9;
  margin-bottom:20px;
}
.mini-stats{
  display:flex;
  gap:20px;
  margin-top:auto;
  flex-wrap:wrap;
}
.mini-stat{flex:1;min-width:120px}
.mini-stat .title{color:#EFF7FF;font-weight:700;font-size:18px;display:flex;gap:8px;align-items:center}
.mini-stat .title i{color:var(--primary);font-size:15px}
.mini-stat .des{color:var(--weak);font-size:12px;margin-top:4px;line-height:1.6}
.value-group{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.value-card{
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:20px;
  padding:26px 24px;
  transition:var(--transition);
  min-height:178px;
}
.value-card:hover{
  background:rgba(255,255,255,0.075);
  border-color:rgba(39,230,195,0.35);
  transform:translateY(-4px);
  box-shadow:0 18px 42px rgba(0,0,0,0.18);
}
.icon-box{
  width:46px;height:46px;
  background:rgba(39,230,195,0.12);
  border:1px solid rgba(39,230,195,0.2);
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  color:var(--primary);
  margin-bottom:20px;
}
.value-card h4{font-size:17px;margin-bottom:10px;line-height:1.4}
.value-card p{font-size:13.5px;line-height:1.8;color:#A9BAD6}
.showcase-wrap{
  display:grid;
  grid-template-columns:.9fr 1.5fr;
  gap:50px;
  align-items:center;
}
.showcase-tabs{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.showcase-tab{
  display:flex;
  gap:16px;
  text-align:left;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.09);
  border-radius:18px;
  padding:20px;
  color:var(--muted);
  transition:var(--transition);
  width:100%;
}
.showcase-tab:hover{
  background:rgba(255,255,255,0.08);
  border-color:rgba(39,230,195,0.25);
  color:#EAF1FF;
}
.showcase-tab.active{
  background:rgba(39,230,195,0.11);
  border-color:rgba(39,230,195,0.5);
  color:#F0FBFA;
  box-shadow:0 0 30px rgba(39,230,195,0.08) inset;
}
.showcase-tab i{
  font-size:21px;color:var(--primary);line-height:1.4;
}
.showcase-tab .tab-body b{display:block;font-size:16px;color:#E6EDFA;margin-bottom:7px}
.showcase-tab .tab-body span{font-size:13.5px;line-height:1.75;color:#9DB0CF}
.showcase-stage{
  position:relative;
}
.stage-glass{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.13);
  border-radius:26px;
  padding:14px;
  box-shadow:var(--shadow-large),inset 0 1px rgba(255,255,255,0.12);
  backdrop-filter:blur(20px);
}
.stage-viewport{
  overflow:hidden;
  border-radius:18px;
  background:#02040A;
}
.stage-track{
  display:flex;
  transition:transform .65s cubic-bezier(.2,.7,.2,1);
}
.stage-slide{flex:0 0 100%;}
.stage-slide img{
  width:100%;
  height:420px;
  object-fit:cover;
  display:block;
}
.stage-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:15px 8px 3px;
  gap:14px;
}
.stage-dots{
  display:flex;gap:8px;
}
.stage-dots button{
  width:8px;height:8px;border-radius:10px;background:rgba(255,255,255,0.22);
  transition:var(--transition);
}
.stage-dots button.active{width:28px;background:var(--primary)}
.stage-arrows{display:flex;gap:8px}
.stage-arrows button{
  width:38px;height:38px;border-radius:12px;
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.15);
  color:#DCE6F6;
  display:flex;align-items:center;justify-content:center;
  transition:var(--transition);
}
.stage-arrows button:hover{background:rgba(39,230,195,0.13);border-color:var(--primary);color:#FFFFFF}
.platform-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.platform-card{
  background:rgba(255,255,255,0.045);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:20px;
  padding:28px 22px 24px;
  transition:var(--transition);
  position:relative;
}
.platform-card:hover{
  background:rgba(255,255,255,0.078);
  transform:translateY(-5px);
  border-color:rgba(39,230,195,0.3);
}
.platform-icon{
  width:52px;height:52px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:16px;
  font-size:23px;
  background:rgba(39,230,195,0.1);
  color:#45F0C6;
  border:1px solid rgba(39,230,195,0.2);
  margin-bottom:20px;
}
.platform-card h3{font-size:17px;margin-bottom:16px;color:#F2F6FF}
.spec-list{display:flex;flex-direction:column;gap:9px}
.spec-item{display:flex;gap:8px;font-size:13.5px;color:#9EB1D2}
.spec-item i{color:var(--primary);font-size:5px;line-height:1.6;display:inline-block}
.security-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.security-item{
  background:linear-gradient(180deg,rgba(255,255,255,0.06),rgba(255,255,255,0.025));
  border:1px solid rgba(255,255,255,0.11);
  border-radius:20px;
  padding:30px 26px;
  height:100%;
}
.security-item .sec-step{
  font-size:12px;
  color:var(--primary);
  display:inline-flex;
  gap:8px;
  align-items:center;
  padding:5px 12px;
  background:rgba(39,230,195,0.08);
  border-radius:8px;
  margin-bottom:22px;
}
.security-item h3{font-size:18px;margin-bottom:15px}
.security-item p{font-size:14px;line-height:1.85}
.news-section{
  position:relative;
}
.latest-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.news-card{
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:20px;
  padding:16px;
  transition:var(--transition);
  display:flex;
  flex-direction:column;
}
.news-card:hover{
  transform:translateY(-4px);
  border-color:rgba(39,230,195,0.32);
  background:rgba(255,255,255,0.075);
  box-shadow:0 20px 42px rgba(0,0,0,0.2);
}
.news-thumb{
  display:block;
  border-radius:14px;
  width:100%;
  height:176px;
  background-size:cover;
  background-position:center;
  border:1px solid rgba(255,255,255,0.1);
  margin-bottom:16px;
  position:relative;
  overflow:hidden;
}
.news-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,13,28,0.2),rgba(7,13,28,0.05));
}
.news-body{
  padding:2px 4px 4px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.news-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.news-cat{
  display:inline-flex;
  align-items:center;
  background:rgba(39,230,195,0.09);
  color:#8CEFD2;
  border:1px solid rgba(39,230,195,0.18);
  padding:3px 10px;
  border-radius:8px;
  font-size:12px;
  white-space:nowrap;
}
.news-date{color:#65799D;font-size:12px;white-space:nowrap}
.news-body h3{font-size:17px;line-height:1.6;margin-bottom:12px;font-weight:700}
.news-body h3 a:hover{color:var(--primary)}
.news-desc{
  font-size:13.5px;
  color:#9CB1D2;
  line-height:1.75;
  margin-bottom:17px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  font-weight:600;
  color:#90F5DE;
}
.news-link:hover{gap:12px;color:#fff}
.empty-state{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  min-height:180px;
  background:rgba(255,255,255,0.03);
  border:1px dashed rgba(255,255,255,0.15);
  border-radius:20px;
  color:#7390B9;
  font-size:15px;
}
.empty-state i{font-size:22px;color:#40597A}
.download-section{
  background:
    radial-gradient(circle at 85% 20%,rgba(152,255,155,0.11),transparent 40%),
    radial-gradient(circle at 10% 80%,rgba(39,230,195,0.08),transparent 32%);
}
.download-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:52px;
  align-items:center;
}
.download-left h2{
  font-size:32px;
  line-height:1.3;
  margin-bottom:18px;
  color:#F1F8FF;
  max-width:720px;
}
.download-left > p{
  color:#99B1D3;
  font-size:15px;
  line-height:1.9;
  margin-bottom:32px;
  max-width:640px;
}
.download-cards{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin:30px 0;
}
.download-card{
  display:flex;
  align-items:center;
  gap:16px;
  background:rgba(255,255,255,0.055);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:18px;
  padding:16px;
  transition:var(--transition);
}
.download-card:hover{
  background:rgba(255,255,255,0.09);
  border-color:rgba(39,230,195,0.35);
}
.download-card .dl-icon{
  width:42px;height:42px;
  flex:0 0 42px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;
  background:rgba(39,230,195,0.12);
  color:var(--primary);
  border-radius:12px;
}
.download-card b{display:flex;flex-direction:column;gap:3px;font-size:15px}
.download-card b small{color:#7D92B5;font-weight:400;font-size:12.6px}
.download-check{
  font-size:13px;
  color:#7190B8;
}
.download-right{
  position:relative;
}
.qr-panel{
  display:flex;
  align-items:center;
  gap:28px;
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.16);
  backdrop-filter:blur(18px);
  border-radius:26px;
  padding:30px;
  box-shadow:var(--shadow-large);
}
.qr-img-box{
  width:170px;
  height:170px;
  flex:0 0 170px;
  background:#FFFFFF;
  padding:10px;
  border-radius:20px;
}
.qr-img-box img{width:100%;height:100%;object-fit:contain}
.qr-text h4{font-size:20px;margin-bottom:12px}
.qr-text p{font-size:14px;color:#AABBD8;line-height:1.8}
.qr-text .qr-tip{color:#6E86AB;font-size:12.5px;margin-top:14px;display:flex;gap:8px;align-items:center}
.cta-band{
  border-top:1px solid rgba(255,255,255,0.07);
  background:rgba(255,255,255,0.02);
  padding:64px 0;
}
.cta-band-inner{
  background:linear-gradient(135deg,rgba(39,230,195,0.12),rgba(30,46,76,0.08));
  border:1px solid rgba(39,230,195,0.23);
  border-radius:28px;
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
  box-shadow:0 22px 58px rgba(0,0,0,0.2);
}
.cta-band h3{font-size:25px;line-height:1.4;color:#F0F9FF}
.cta-band p{margin-top:10px;font-size:14.5px;color:#A6BAD9}
.faq-shell{
  max-width:880px;
  margin:0 auto;
}
.faq-item{
  background:rgba(255,255,255,0.035);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:17px;
  margin-bottom:14px;
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{border-color:rgba(255,255,255,0.22)}
.faq-item details[open]{
  background:rgba(39,230,195,0.05);
  border-color:rgba(39,230,195,0.35);
}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  gap:14px;
  padding:20px 22px;
  font-weight:600;
  color:#E1EAFA;
  font-size:15.5px;
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  width:30px;height:30px;
  flex:0 0 30px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(39,230,195,0.14);
  border-radius:9px;
  color:var(--primary);
  font-size:13px;
  font-weight:800;
}
.faq-arrow{
  margin-left:auto;
  color:#687598;
  transition:transform .3s ease;
}
details[open] .faq-arrow{transform:rotate(180deg);color:var(--primary)}
.faq-answer{
  padding:0 22px 22px 66px;
  color:#AABBD8;
  font-size:14.5px;
  line-height:1.9;
}
.faq-answer p{margin-bottom:10px}
.faq-answer ol{padding-left:21px;list-style:decimal;display:flex;flex-direction:column;gap:8px}
.faq-answer ol li{color:#A6B8D6}
.faq-answer ol li::marker{color:var(--primary);font-weight:700}
.site-footer{
  background:var(--surface-deep);
  border-top:1px solid rgba(255,255,255,0.07);
  padding:62px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .8fr .8fr .9fr;
  gap:40px;
  margin-bottom:42px;
}
.footer-brand .brand-name{font-size:20px}
.footer-brand p{
  font-size:13.5px;
  line-height:1.9;
  color:#6D83A8;
  max-width:320px;
  margin-top:18px;
}
.footer-col h4{
  font-size:15px;
  color:#DCE8FC;
  margin-bottom:18px;
  padding-bottom:12px;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-col a{
  display:flex;
  padding:7px 0;
  color:#7E90B0;
  font-size:14px;
}
.footer-col a:hover{color:var(--primary)}
.footer-copy{
  border-top:1px solid rgba(255,255,255,0.06);
  padding-top:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  color:#5C6C8D;
  font-size:12.8px;
}
.footer-copy a{color:#6C7D9C}
.footer-copy a:hover{color:var(--primary)}
@media (max-width:1024px){
  .brand small{display:none}
  .nav-toggle{display:flex}
  .site-nav{
    position:fixed;
    top:0;
    right:0;
    width:min(340px,88vw);
    height:100vh;
    z-index:1000;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:6px;
    background:rgba(6,10,21,0.97);
    -webkit-backdrop-filter:blur(22px);
    backdrop-filter:blur(22px);
    border-left:1px solid rgba(255,255,255,0.12);
    padding:80px 30px 30px;
    transform:translateX(105%);
    transition:transform .35s ease;
    box-shadow:-18px 0 60px rgba(0,0,0,0.5);
  }
  .site-nav.open{transform:translateX(0)}
  .site-nav.open::before{
    content:"关闭";
    position:absolute;
    top:20px;
    right:22px;
    font-size:13px;
    color:#7F93B4;
  }
  .nav-link{padding:15px 4px;font-size:17px;border-bottom:1px solid rgba(255,255,255,0.07);color:#B4C5E0}
  .nav-link.active::after{height:2px;bottom:-1px}
  .nav-toggle{position:relative;z-index:1100}
  .value-shell,.showcase-wrap,.download-grid{grid-template-columns:1fr}
  .showcase-wrap{gap:40px}
  .hero-visual{padding-left:0;margin-top:36px}
  .platform-grid{grid-template-columns:1fr 1fr}
  .security-grid,.latest-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .site-header{top:0}
  .body-nav-open{overflow:hidden}
}
@media (max-width:767px){
  .section{padding:58px 0}
  .hero{padding:52px 0}
  .hero h1{font-size:33px;line-height:1.28}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%;max-width:none}
  .topbar-mini{display:none}
  .header-inner{padding:11px 16px}
  .grid-container{padding-left:16px;padding-right:16px}
  .topbar-inner{padding-left:16px;padding-right:16px}
  .brand-name{font-size:18px}
  .section-head h2{font-size:24px}
  .section-head p{font-size:14px}
  .value-group{grid-template-columns:1fr 1fr;gap:12px}
  .value-card{padding:20px 16px;min-height:0}
  .platform-grid,.security-grid,.latest-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .value-primary h3{font-size:20px}
  .value-primary img{height:170px}
  .stage-slide img{height:220px}
  .showcase-tab{padding:16px}
  .showcase-tab .tab-body span{font-size:13px}
  .security-item,.platform-card{padding:20px 18px}
  .news-card{padding:14px}
  .download-cards{grid-template-columns:1fr}
  .qr-panel{flex-direction:column;align-items:flex-start;padding:22px}
  .qr-img-box{width:130px;height:130px;flex:0 0 130px}
  .cta-band-inner{padding:28px 20px}
  .faq-item summary{padding:17px 15px;gap:10px;font-size:14.5px}
  .faq-answer{padding:0 16px 18px 52px}
  .footer-copy{flex-direction:column;text-align:center}
  .stage-arrows button{width:36px;height:36px}
}
@media (max-width:520px){
  .value-group{grid-template-columns:1fr}
  .topbar-actions a{display:none}
  .hero-proof{gap:8px 16px}
  .hero-proof span{font-size:12px}
  .hero-actions .btn-lg{padding:16px 20px;font-size:15px}
  .section-head p{font-size:14px}
}

/* roulang page: category1 */
:root {
  --bg-deep:#070D1B;
  --bg-panel:#0C162C;
  --bg-soft:#0E1B33;
  --glass:rgba(255,255,255,.06);
  --glass-strong:rgba(12,22,44,.74);
  --border:rgba(255,255,255,.12);
  --border-soft:rgba(255,255,255,.08);
  --text:#EAF1FF;
  --text-secondary:#A9BBDB;
  --muted:#6F83A9;
  --primary:#27E6C3;
  --cta:#24E2A4;
  --cta-hover:#58F5BF;
  --amber:#FFC857;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-lg:0 24px 60px rgba(0,0,0,.25);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",-apple-system,BlinkMacSystemFont,sans-serif;
  --font-mono:"SF Mono","Roboto Mono",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
a img{border:0}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
p,h1,h2,h3,h4,h5,figure{margin:0}
button{border:0;background:transparent;cursor:pointer}
input,select,textarea{font-family:inherit}
strong,b{font-weight:700}
.wrap,.grid-container{max-width:1260px;margin-inline:auto;padding-inline:24px}
.section{padding:84px 0}
.section.tight{padding:56px 0}

a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--primary);outline-offset:4px;border-radius:6px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:46px;
  padding:11px 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  text-decoration:none;
  transition:all .22s ease;
  border:1px solid transparent;
}
.btn i{font-size:14px}
.btn-cta{
  background:var(--cta);
  color:#041D16;
  border-color:rgba(88,245,191,.35);
  box-shadow:0 0 0 1px rgba(70,255,180,.15),0 10px 32px rgba(36,226,164,.26);
}
.btn-cta:hover{
  background:var(--cta-hover);
  transform:translateY(-2px);
  box-shadow:0 14px 38px rgba(88,245,191,.32),0 0 0 1px rgba(88,245,191,.24);
  color:#031812;
}
.btn-secondary{
  background:rgba(255,255,255,.06);
  color:var(--text);
  border-color:rgba(255,255,255,.16);
  backdrop-filter:blur(10px);
}
.btn-secondary:hover{
  border-color:rgba(39,230,195,.6);
  color:var(--primary);
  background:rgba(39,230,195,.06);
  transform:translateY(-2px);
}
.btn-line{
  background:transparent;
  color:var(--text-secondary);
  border-color:rgba(255,255,255,.12);
  padding:7px 14px;
  min-height:34px;
  font-size:14px;
}
.btn-line:hover{color:var(--primary);border-color:var(--primary)}
.btn-sm{min-height:38px;padding:7px 14px;font-size:14px}
.btn-lg{min-height:54px;padding:14px 30px;font-size:17px;border-radius:14px}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,13,27,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{
  max-width:1260px;
  margin-inline:auto;
  padding:16px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  position:relative;
}
.brand{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  line-height:1.25;
  min-width:0;
}
.brand-name{
  font-size:23px;
  font-weight:700;
  letter-spacing:.4px;
  color:#FFFFFF;
  white-space:nowrap;
}
.brand small{
  font-size:11px;
  color:var(--muted);
  letter-spacing:.3px;
  margin-top:3px;
  white-space:nowrap;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  color:var(--text-secondary);
  font-size:15px;
  font-weight:500;
  transition:color .2s;
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary)}
.nav-link.active{
  color:var(--primary);
  background:rgba(39,230,195,.08);
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(39,230,195,.8);
}
.site-actions{margin-left:10px}
.site-actions .btn{white-space:nowrap}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  align-items:center;
  justify-content:center;
  color:var(--text);
  font-size:18px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  transition:all .2s;
}
.nav-toggle:hover{color:var(--primary);border-color:rgba(39,230,195,.5)}

/* ===== 分类页 Hero ===== */
.category-hero{
  position:relative;
  overflow:hidden;
  padding:72px 0 70px;
  background:
    radial-gradient(circle at 12% 18%,rgba(39,230,195,.14),transparent 32%),
    radial-gradient(ellipse at 85% 0%,rgba(255,200,87,.1),transparent 32%),
    linear-gradient(120deg,rgba(7,13,27,.93) 0%,rgba(10,18,36,.82) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.category-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:42px 42px;
  pointer-events:none;
}
.category-hero .wrap{position:relative;z-index:2}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);
  align-items:center;
  gap:56px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  color:var(--muted);
  font-size:14px;
  margin-bottom:20px;
}
.breadcrumb a{color:var(--text-secondary);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{opacity:.7}
.hero-title{
  font-size:50px;
  line-height:1.2;
  letter-spacing:.5px;
  font-weight:700;
  margin-bottom:20px;
  background:linear-gradient(135deg,#FFFFFF 8%,#B9EFFF 52%,#27E6C3 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-lead{
  font-size:16px;
  line-height:1.9;
  color:var(--text-secondary);
  max-width:640px;
  margin-bottom:30px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.hero-tags span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:30px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  color:var(--text-secondary);
  font-size:13px;
}
.hero-tags i{color:var(--amber)}
.hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(12,22,44,.66);
  box-shadow:var(--shadow-lg);
  padding:16px;
  backdrop-filter:blur(16px);
  overflow:hidden;
}
.hero-visual img{
  width:100%;
  height:260px;
  object-fit:cover;
  border-radius:16px;
}
.safe-reminder{
  margin-top:16px;
  padding:14px 16px;
  border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,200,87,.2);
  color:var(--text-secondary);
  font-size:13px;
  line-height:1.7;
}
.safe-reminder strong{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--amber);
  font-size:14px;
  margin-bottom:6px;
}
.safe-reminder i{color:var(--amber)}
.secure-badge-glass{
  position:absolute;
  top:24px;
  right:24px;
  background:rgba(7,13,27,.6);
  backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.14);
  color:var(--text);
  padding:6px 10px;
  border-radius:30px;
  font-size:12px;
  letter-spacing:.2px;
}

/* ===== 通用 Section 标题 ===== */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:44px;
}
.section-kicker{
  color:var(--primary);
  font-size:13px;
  letter-spacing:2px;
  text-transform:uppercase;
  margin-bottom:8px;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.section-kicker::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(39,230,195,.7);
  display:inline-block;
}
.section-title{
  font-size:32px;
  line-height:1.32;
  font-weight:700;
  letter-spacing:.2px;
  color:#fff;
  margin:0;
}
.section-desc{
  color:var(--muted);
  font-size:15px;
  max-width:560px;
  margin-top:8px;
}

/* ===== Platform cards ===== */
.platform-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:22px;
}
.card{
  position:relative;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.11);
  border-radius:var(--radius-lg);
  padding:30px;
  overflow:hidden;
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.card::before{
  content:"";
  position:absolute;
  top:0;
  left:24px;
  right:24px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);
  opacity:0;
  transition:opacity .25s;
}
.card:hover{
  border-color:rgba(39,230,195,.35);
  background:rgba(39,230,195,.045);
  transform:translateY(-3px);
}
.card:hover::before{opacity:1}
.card-title{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:21px;
  font-weight:700;
  margin-bottom:6px;
}
.card-icon{
  width:52px;
  height:52px;
  flex:0 0 52px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(39,230,195,.22),rgba(39,230,195,.06));
  border:1px solid rgba(39,230,195,.3);
  color:var(--primary);
  font-size:20px;
}
.card-desc{
  color:var(--text-secondary);
  font-size:14.5px;
  line-height:1.7;
  margin:12px 0 18px;
}
.spec-list{
  margin-top:14px;
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:10px;
}
.spec-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:7px 0;
  color:var(--muted);
  font-size:14px;
}
.spec-list li i{
  color:var(--primary);
  margin-top:6px;
  display:inline-block;
  width:16px;
  flex:0 0 16px;
  font-size:13px;
}
.spec-list strong{color:var(--text);font-weight:600}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-top:18px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  padding:7px 0;
  transition:gap .2s;
}
.card-link:hover{gap:11px;color:#7DF8DC}
.platform-grid .opt-android{grid-column:span 5}
.platform-grid .opt-ios{grid-column:span 7}
.platform-grid .opt-windows{grid-column:span 5}
.platform-grid .opt-web{grid-column:span 7}
.platform-grid .opt-full{grid-column:span 12}

/* ===== Notice ===== */
.notice-panel{
  display:flex;
  align-items:center;
  gap:16px;
  border-radius:var(--radius-lg);
  padding:20px 24px;
  background:rgba(255,200,87,.06);
  border:1px solid rgba(255,200,87,.22);
  color:var(--text-secondary);
  font-size:14px;
  line-height:1.7;
  margin-top:24px;
}
.notice-panel i{
  font-size:22px;
  color:var(--amber);
  flex:0 0 26px;
}
.notice-panel strong{color:var(--text)}

/* ===== Feature / banner ===== */
.feature-section{background:linear-gradient(180deg,transparent,rgba(13,23,45,.62),transparent)}
.feature-panel{
  border-radius:26px;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.04);
  padding:16px;
  box-shadow:var(--shadow-lg);
}
.feature-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:24px;
  align-items:center;
}
.feature-media{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  min-height:360px;
}
.feature-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.feature-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,transparent 52%,rgba(7,13,27,.34));
}
.feature-body{padding:28px 26px}
.feature-body h3{
  font-size:26px;
  line-height:1.35;
  margin-bottom:14px;
}
.feature-body .lead{color:var(--text-secondary);font-size:15px;line-height:1.85;margin-bottom:22px}
.feature-list{display:grid;gap:12px}
.feature-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.08);
  padding:14px 16px;
  border-radius:14px;
  transition:border-color .2s,background .2s;
}
.feature-list li:hover{border-color:rgba(39,230,195,.28);background:rgba(39,230,195,.05)}
.feature-list .feature-dot{
  flex:0 0 30px;
  width:30px;
  height:30px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  color:var(--primary);
  background:rgba(39,230,195,.1);
  border:1px solid rgba(39,230,195,.22);
  font-size:13px;
  margin-top:3px;
}
.feature-list strong{display:block;font-size:15px;color:#fff;margin-bottom:2px}
.feature-list p{font-size:13.5px;color:var(--muted);line-height:1.65}

/* ===== System ===== */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.spec-card{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);
  padding:26px 22px;
  transition:border-color .25s,transform .25s;
}
.spec-card:hover{border-color:rgba(39,230,195,.3);transform:translateY(-3px)}
.spec-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(39,230,195,.16),transparent);
  border:1px solid rgba(39,230,195,.2);
  color:var(--primary);
  font-size:19px;
  margin-bottom:16px;
}
.spec-card h3{font-size:17px;font-weight:700;margin-bottom:14px}
.spec-card dl{display:grid;gap:8px}
.spec-card dt{color:var(--muted);font-size:12.5px}
.spec-card dd{color:var(--text);font-size:14px;margin-bottom:2px;font-weight:500}
.spec-note{
  margin-top:20px;
  display:flex;
  align-items:flex-start;
  gap:10px;
  color:var(--muted);
  font-size:13px;
  border-left:3px solid var(--primary);
  padding-left:16px;
  line-height:1.7;
}

/* ===== FAQ ===== */
.faq-wrap{max-width:920px;margin-inline:auto}
.faq-item{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;
  margin-bottom:14px;
  transition:border-color .2s,background .2s;
  overflow:hidden;
}
.faq-item[open]{border-color:rgba(39,230,195,.4);background:rgba(39,230,195,.04)}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:14px;
  padding:19px 22px;
  font-weight:600;
  color:#FFFFFF;
  font-size:16px;
  transition:color .2s;
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary .q-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px;
  height:26px;
  flex:0 0 26px;
  font-size:13px;
  border-radius:8px;
  color:var(--primary);
  background:rgba(39,230,195,.12);
  border:1px solid rgba(39,230,195,.24);
}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  margin-left:auto;
  font-size:13px;
  color:var(--muted);
  transition:transform .25s,color .25s;
}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--primary)}
.faq-item[open] summary{color:var(--primary)}
.faq-content{padding:0 24px 22px 62px}
.faq-content p{color:var(--text-secondary);font-size:14.5px;line-height:1.9;margin-bottom:10px}

/* ===== CTA ===== */
.cta-section{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(ellipse at 80% 100%,rgba(39,230,195,.13),transparent 42%),
    linear-gradient(120deg,#07101f,#0C172E),
    url("/assets/images/backpic/back-2.webp") center/cover;
}
.cta-panel{
  position:relative;
  text-align:center;
  padding:96px 20px 86px;
}
.cta-panel::before{
  content:"";
  width:48px;
  height:1px;
  display:block;
  margin:0 auto 24px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.cta-panel .lead{
  color:var(--text-secondary);
  max-width:680px;
  margin:12px auto 30px;
  font-size:15px;
}
.cta-buttons{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-extra{
  margin-top:24px;
  color:var(--muted);
  font-size:13px;
  display:flex;
  gap:18px;
  justify-content:center;
  flex-wrap:wrap;
}
.cta-extra a{color:var(--text-secondary)}
.cta-extra a:hover{color:var(--primary)}

/* ===== Quick links ===== */
.quick-links{margin-top:44px;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.quick-link{
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.1);
  border-radius:14px;
  padding:14px 16px;
  font-size:14px;
  color:var(--text-secondary);
  display:flex;
  align-items:center;
  gap:10px;
  transition:border-color .2s,color .2s,background .2s;
}
.quick-link i{color:var(--primary);font-size:15px}
.quick-link:hover{color:var(--primary);border-color:rgba(39,230,195,.3);background:rgba(39,230,195,.05)}

/* ===== Footer ===== */
.site-footer{
  background:#040A15;
  padding-top:64px;
  padding-bottom:20px;
  border-top:1px solid rgba(255,255,255,.07);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr .8fr .8fr 1fr;
  gap:38px;
  padding-bottom:36px;
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.8;margin-top:14px;max-width:380px}
.footer-brand .brand small{color:var(--muted)}
.footer-col h4{
  font-size:16px;
  color:#FFFFFF;
  font-weight:700;
  margin-bottom:12px;
}
.footer-col a{
  display:block;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
  padding:5px 0;
  transition:color .2s;
}
.footer-col a:hover{color:var(--primary)}
.footer-copy{
  border-top:1px solid rgba(255,255,255,.07);
  padding-top:18px;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  color:rgba(111,131,169,.8);
  font-size:13px;
}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-title{font-size:42px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{max-width:560px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .platform-grid .opt-android,.platform-grid .opt-ios,.platform-grid .opt-windows,.platform-grid .opt-web{grid-column:span 6}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .feature-inner{grid-template-columns:1fr}
  .feature-media{min-height:260px}
  .feature-body{padding:18px 10px 6px}
}
@media (max-width:900px){
  .site-nav{
    position:fixed;
    top:0;
    right:0;
    height:100vh;
    width:min(340px,86vw);
    background:rgba(6,12,26,.97);
    backdrop-filter:blur(24px);
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    justify-content:flex-start;
    padding:76px 26px 28px;
    transform:translateX(105%);
    transition:transform .32s ease;
    box-shadow:-18px 0 50px rgba(0,0,0,.3);
    margin-left:0;
    border-left:1px solid rgba(255,255,255,.1);
    overflow-y:auto;
    z-index:201;
  }
  .site-header.nav-open .site-nav{transform:translateX(0)}
  .site-nav .nav-link{width:100%;font-size:17px;padding:13px 8px;border-bottom:1px solid rgba(255,255,255,.08);color:var(--text-secondary)}
  .site-nav .nav-link.active{border-bottom-color:rgba(39,230,195,.3)}
  .site-actions{margin:18px 0 0;width:100%}
  .site-actions .btn{width:100%;justify-content:center}
  .nav-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    margin-left:auto;
  }
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-title{font-size:28px}
  .quick-links{grid-template-columns:1fr}
}
@media (max-width:700px){
  .wrap,.grid-container{padding-inline:18px}
  .header-inner{padding:14px 18px}
  .brand-name{font-size:20px}
  .brand small{font-size:10px}
  .category-hero{padding:50px 0 48px}
  .hero-title{font-size:34px}
  .hero-lead{font-size:15px}
  .btn-lg{padding:13px 18px;font-size:15px}
  .hero-tags span{font-size:12px}
  .platform-grid{grid-template-columns:1fr}
  .platform-grid .opt-android,.platform-grid .opt-ios,.platform-grid .opt-windows,.platform-grid .opt-web{grid-column:auto}
  .spec-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-copy{flex-direction:column}
  .cta-panel{padding:64px 4px}
  .cta-buttons .btn{width:100%}
  .hero-visual img{height:180px}
  .feature-list li{padding:12px}
  .faq-content{padding:0 16px 18px 20px}
  .faq-item summary{padding:16px}
  .section{padding:52px 0}
  .section-title{font-size:25px}
}
@media (max-width:420px){
  .hero-title{font-size:29px}
}

/* roulang page: article */
:root{
  --bg-deep:#070D1B;
  --bg-card:#0C162C;
  --glass-bg:rgba(255,255,255,.06);
  --glass-border:rgba(255,255,255,.12);
  --cyan:#27E6C3;
  --cta:#24E2A4;
  --cta-strong:#67F0B3;
  --cta-text:#06100B;
  --amber:#FFC857;
  --text-main:#EAF1FF;
  --text-sub:#A9BBDB;
  --text-mute:#6F83A9;
  --line:rgba(255,255,255,.08);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:11px;
  --shadow:0 24px 60px rgba(0,0,0,.25);
  --font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",system-ui,sans-serif;
}
*,*:before,*:after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg-deep);color:var(--text-main);font-family:var(--font-family);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol,dl,dd,p,figure,blockquote{margin:0}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
::selection{background:rgba(39,230,195,.28);color:#fff}
.container,.grid-container{max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}
.site-header{position:sticky;top:0;z-index:80;background:rgba(7,13,27,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.07)}
.header-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 24px;min-height:70px}
.brand{display:inline-flex;flex-direction:column;line-height:1.3;gap:2px}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.03em;color:var(--text-main);white-space:nowrap}
.brand small{font-size:11px;color:var(--text-mute);letter-spacing:.32em;text-transform:uppercase;white-space:nowrap}
.site-nav{display:flex;align-items:center;gap:6px}
.nav-link{display:inline-flex;align-items:center;justify-content:center;color:var(--text-sub);font-size:15px;font-weight:500;padding:9px 15px;border-radius:10px;position:relative;transition:color .2s ease,background .2s ease}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-link.active{color:#fff;font-weight:600}
.nav-link.active:after{content:"";position:absolute;left:16px;right:16px;bottom:3px;height:2px;border-radius:4px;background:var(--cyan);box-shadow:0 0 12px rgba(39,230,195,.7)}
.site-actions{display:inline-flex;align-items:center;gap:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 20px;border-radius:12px;font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;text-align:center}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-cta{background:linear-gradient(135deg,var(--cta),var(--cta-strong));color:var(--cta-text);box-shadow:0 0 0 rgba(36,226,164,.0),0 0 22px rgba(36,226,164,.42)}
.btn-cta:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(36,226,164,.3),0 0 26px rgba(36,226,164,.55);color:var(--cta-text)}
.btn-cta:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.18);color:var(--text-main)}
.btn-ghost:hover{border-color:rgba(39,230,195,.65);color:var(--cyan);background:rgba(39,230,195,.07)}
.btn-ghost:active{transform:translateY(0)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:10px;color:#fff;font-size:20px;cursor:pointer}
@media(max-width:960px){
  .nav-toggle{display:inline-flex}
  .site-nav{position:fixed;top:74px;left:16px;right:16px;display:flex;flex-direction:column;align-items:stretch;gap:6px;background:rgba(8,15,30,.97);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:16px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:90;box-shadow:0 32px 80px rgba(0,0,0,.4)}
  .site-nav.open{opacity:1;visibility:visible;transform:translateY(0)}
  .site-nav .nav-link{font-size:16px;justify-content:flex-start;padding:12px 16px}
  .nav-extra{border-top:1px solid rgba(255,255,255,.08);margin-top:10px;padding-top:12px}
  .btn-sm{width:100%}
}
.article-page-banner{position:relative;padding:62px 0 48px;background:
  linear-gradient(180deg,rgba(7,13,27,.9) 0%,rgba(7,13,27,.78) 100%),
  url('/assets/images/backpic/back-2.webp') center 22% / cover no-repeat;
  border-bottom:1px solid rgba(255,255,255,.06);overflow:hidden}
.article-page-banner:after{content:"";position:absolute;right:-160px;top:-80px;width:420px;height:420px;border-radius:50%;background:radial-gradient(closest-side,rgba(39,230,195,.15),transparent);pointer-events:none}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;color:var(--text-mute);font-size:13px;margin-bottom:28px;position:relative;z-index:2}
.breadcrumb a{color:var(--text-sub);transition:color .2s}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb i{font-size:12px;color:var(--text-mute)}
.breadcrumb .current{color:var(--text-sub)}
.article-title-group{max-width:920px;position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--cyan);background:rgba(39,230,195,.1);border:1px solid rgba(39,230,195,.22);padding:5px 13px;border-radius:999px;margin-bottom:18px;font-weight:500}
.article-title-group h1{font-size:clamp(30px,4vw,50px);line-height:1.3;font-weight:700;letter-spacing:.01em;margin:0 0 18px;color:var(--text-main);text-wrap:balance}
.article-meta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.meta-chip{display:inline-flex;align-items:center;gap:7px;color:var(--text-sub);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);padding:7px 13px;border-radius:10px;font-size:13px}
.meta-chip i{color:var(--cyan)}
.article-main-section{padding:48px 0 80px}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:44px;align-items:start}
.article-primary{min-width:0}
.article-body{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:clamp(22px,4vw,44px);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow);font-size:16.5px;line-height:1.95;color:var(--text-main);word-break:break-word}
.article-body>img,.article-body p>img{border-radius:18px;box-shadow:var(--shadow);margin:28px 0}
.article-body p{margin:0 0 22px}
.article-body a{color:var(--cyan);text-decoration:none;border-bottom:1px solid rgba(39,230,195,.4);transition:border-color .2s,color .2s}
.article-body a:hover{color:var(--cta-strong);border-bottom-color:var(--cta-strong)}
.article-body h2{font-size:28px;line-height:1.45;font-weight:700;margin:46px 0 20px;padding-top:8px;color:var(--text-main)}
.article-body h3{font-size:22px;line-height:1.5;font-weight:700;margin:36px 0 16px;color:var(--text-main)}
.article-body h4{font-size:18px;line-height:1.6;font-weight:700;margin:28px 0 12px;color:var(--text-main)}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body li{margin-bottom:9px}
.article-body blockquote{border-left:3px solid var(--cyan);background:rgba(39,230,195,.07);padding:18px 22px;border-radius:0 14px 14px 0;margin:0 0 26px;color:var(--text-sub);font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body pre{background:#050A17;border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:18px;overflow:auto;font-size:14px;line-height:1.8;color:#D9EBFF;margin:0 0 24px}
.article-body code{background:rgba(39,230,195,.1);color:var(--cyan);border-radius:6px;padding:2px 7px;font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-size:.9em}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 28px;background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.1);border-radius:14px;overflow:hidden}
.article-body th,.article-body td{border-bottom:1px solid rgba(255,255,255,.08);padding:13px 16px;text-align:left;font-size:15px}
.article-body th{background:rgba(255,255,255,.04);color:var(--text-main);font-weight:600}
.article-body tr:last-child td{border-bottom:none}
.article-body figure{margin:30px 0}
.article-body figcaption{color:var(--text-mute);font-size:13px;text-align:center;padding-top:12px}
.article-body hr{border:none;height:1px;background:var(--line);margin:36px 0}
.article-end-tools{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;background:var(--glass-bg);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);padding:20px 22px;margin-top:26px}
.end-tool-title{font-weight:600;color:var(--text-sub);font-size:14px;display:flex;align-items:center;gap:8px}
.end-tool-title i{color:var(--cyan)}
.empty-article{background:var(--glass-bg);border:1px dashed rgba(255,255,255,.17);border-radius:var(--radius-lg);padding:clamp(32px,6vw,72px) clamp(22px,5vw,60px);text-align:center;backdrop-filter:blur(12px)}
.empty-icon{width:66px;height:66px;border-radius:18px;background:rgba(39,230,195,.09);color:var(--cyan);display:flex;align-items:center;justify-content:center;font-size:30px;margin:0 auto 22px}
.empty-article h1{font-size:30px;margin:0 0 12px}
.empty-article p{color:var(--text-sub);font-size:16px;margin:0 auto 26px;max-width:520px}
.article-aside{display:grid;gap:18px;min-width:0}
.side-card{background:var(--glass-bg);border:1px solid rgba(255,255,255,.09);border-radius:20px;padding:24px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:border-color .25s,transform .25s}
.side-card:hover{border-color:rgba(39,230,195,.25)}
.side-title{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-main);margin:0 0 16px}
.side-title i{color:var(--cyan);width:24px;text-align:center}
.meta-list{display:grid;gap:12px}
.meta-list div{display:flex;gap:10px;justify-content:space-between;font-size:14px;color:var(--text-sub);border-bottom:1px solid rgba(255,255,255,.06);padding-bottom:12px}
.meta-list div:last-child{border-bottom:none;padding-bottom:0}
.meta-list dt{color:var(--text-mute);font-weight:400}
.meta-list dd{font-weight:500;color:var(--text-sub);text-align:right}
.side-nav{display:grid;gap:9px}
.side-nav a{display:flex;align-items:center;gap:11px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);color:var(--text-sub);padding:12px 14px;border-radius:13px;font-size:14px;transition:color .2s,background .2s,border-color .2s,transform .2s}
.side-nav a i{color:var(--cyan);width:18px;text-align:center}
.side-nav a:hover{color:#fff;background:rgba(39,230,195,.08);border-color:rgba(39,230,195,.25);transform:translateX(3px)}
.alert-call{display:block;background:rgba(255,200,87,.06);border:1px solid rgba(255,200,87,.18);border-radius:13px;padding:13px 14px;color:var(--text-sub);font-size:13px;line-height:1.8;margin-bottom:14px}
.alert-call strong{display:block;margin-bottom:4px;color:var(--amber);font-weight:600}
.side-note{color:var(--text-mute);font-size:12px;line-height:1.9}
.side-note strong{color:var(--text-sub)}
.article-cta{background:var(--bg-card);border-top:1px solid rgba(255,255,255,.07);padding:74px 0}
.cta-panel{position:relative;background:
  radial-gradient(circle at 85% 10%,rgba(39,230,195,.08),transparent 260px),
  rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:28px;padding:clamp(28px,5vw,60px);
  overflow:hidden;backdrop-filter:blur(10px)}
.cta-panel:before{content:"";position:absolute;left:0;top:28px;bottom:28px;width:4px;border-radius:20px;background:linear-gradient(180deg,var(--cyan),transparent)}
.cta-panel h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin:0 0 16px;color:var(--text-main)}
.cta-panel p{font-size:16px;color:var(--text-sub);max-width:720px;margin:0 0 30px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.security-line{display:flex;flex-wrap:wrap;gap:18px;color:var(--text-mute);font-size:13px}
.security-line span{display:inline-flex;align-items:center;gap:7px}
.security-line i{color:var(--cyan)}
.faq-inline{background:var(--bg-deep);padding:60px 0 34px}
.faq-inner{max-width:900px;margin:0 auto}
.faq-inner h2{font-size:26px;text-align:center;margin:0 0 30px;color:var(--text-main)}
.faq-item{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.09);border-radius:17px;padding:5px 22px;margin-bottom:14px;transition:border-color .25s}
.faq-item:hover{border-color:rgba(39,230,195,.2)}
.faq-item summary{cursor:pointer;display:flex;align-items:center;gap:14px;padding:16px 0;color:var(--text-main);font-weight:600;font-size:16px;list-style:none;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--cyan)}
.faq-item summary:hover{color:var(--cyan)}
.faq-item[open]{border-color:rgba(39,230,195,.35)}
.faq-item .faq-answer{color:var(--text-sub);line-height:1.9;padding:0 0 18px 38px;font-size:15px}
@media(max-width:1024px){
  .article-shell{grid-template-columns:minmax(0,1fr) 300px;gap:32px}
  .cta-panel h2{font-size:28px}
}
@media(max-width:900px){
  .article-page-banner{padding:50px 0 40px}
  .article-main-section{padding:36px 0 60px}
  .article-shell{grid-template-columns:1fr}
  .article-aside{grid-template-columns:1fr;order:2}
  .article-primary{order:1}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .container,.grid-container,.header-inner{padding-left:18px;padding-right:18px}
  .brand-name{font-size:18px}
  .brand small{font-size:10px;letter-spacing:.14em}
  .article-title-group h1{font-size:28px}
  .article-body{font-size:15.5px;line-height:1.9;padding:20px}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:19px}
  .meta-chip{font-size:12px}
  .article-end-tools{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .cta-panel{padding:26px 20px}
  .cta-actions .btn{width:100%}
  .security-line{flex-direction:column;gap:8px}
}
.site-footer{background:#040914;border-top:1px solid rgba(255,255,255,.05);padding:62px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-mute);font-size:13px;line-height:2;max-width:340px}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col h4{font-size:15px;color:var(--text-main);margin:0 0 8px;font-weight:600}
.footer-col a{color:var(--text-mute);font-size:13px;transition:color .2s;display:inline-flex;align-items:center;gap:8px}
.footer-col a:hover{color:var(--cyan)}
.footer-col i{color:var(--text-mute);width:16px}
.footer-copy{margin-top:46px;border-top:1px solid rgba(255,255,255,.06);padding:22px 0;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:var(--text-mute);font-size:12px}
.footer-copy span{display:inline-flex;align-items:center;gap:6px}
@media(max-width:820px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-copy{flex-direction:column}
}
@media(max-width:640px){
  .footer-grid{grid-template-columns:1fr}
  .footer-brand p{max-width:none}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* roulang page: category2 */
:root{
  --bg-dark:#070d1b;
  --bg-deep:#0c162c;
  --bg-soft:#101c33;
  --surface:rgba(255,255,255,.06);
  --surface-strong:rgba(255,255,255,.09);
  --border:rgba(255,255,255,.12);
  --hairline:rgba(255,255,255,.045);
  --cyan:#27e6c3;
  --cyan-soft:rgba(39,230,195,.14);
  --green:#24e2a4;
  --green-soft:rgba(36,226,164,.16);
  --amber:#ffc857;
  --amber-soft:rgba(255,200,87,.15);
  --text-main:#eaf1ff;
  --text-sub:#a9bbdb;
  --text-dim:#6f83a9;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:10px;
  --shadow-lg:0 24px 60px rgba(0,0,0,.28);
  --shadow-md:0 16px 36px rgba(0,0,0,.18);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"SF Mono","Cascadia Code",Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

html{
  scroll-behavior:smooth;
  scroll-padding-top:100px;
}

body{
  font-family:var(--font-cn);
  font-size:15px;
  line-height:1.8;
  color:var(--text-main);
  background-color:var(--bg-dark);
  background-image:
    radial-gradient(circle at 86% 8%, rgba(39,230,195,.06), transparent 32%),
    radial-gradient(circle at 10% 42%, rgba(36,226,164,.045), transparent 26%),
    radial-gradient(circle at 55% 90%, rgba(255,200,87,.035), transparent 24%);
  background-attachment:fixed;
  min-height:100vh;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.024) 1px, transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
  z-index:0;
}

img{
  display:block;
  max-width:100%;
  height:auto;
}

a{
  text-decoration:none;
  color:inherit;
}

ul,ol{
  list-style:none;
}

button,input,select,textarea{
  font:inherit;
}

.container{
  width:min(1200px,100% - 32px);
  margin-inline:auto;
}

.grid-container{
  max-width:1240px;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:10px;
  z-index:2000;
  background:var(--cyan);
  color:#02130e;
  border-radius:8px;
  padding:8px 14px;
  font-size:14px;
}

.skip-link:focus{
  left:12px;
}

.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(6,11,24,.74);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .3s ease, box-shadow .3s ease;
}

.site-header.is-scrolled{
  background:rgba(5,10,21,.9);
  box-shadow:0 12px 34px rgba(0,0,0,.26);
}

.header-inner{
  max-width:1240px;
  margin-inline:auto;
  height:82px;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
}

.brand{
  display:inline-flex;
  flex-direction:column;
  gap:2px;
  line-height:1.2;
  flex-shrink:0;
}

.brand .brand-name{
  font-size:20px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text-main);
  position:relative;
  padding-bottom:4px;
}

.brand .brand-name::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:32px;
  height:2px;
  border-radius:10px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(39,230,195,.55);
}

.brand small{
  color:var(--text-dim);
  font-size:12px;
  letter-spacing:.04em;
}

.site-nav{
  display:flex;
  align-items:center;
  gap:26px;
}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 2px;
  font-size:15px;
  color:var(--text-sub);
  transition:color .22s ease;
}

.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:100%;
  bottom:4px;
  height:1px;
  background:linear-gradient(90deg, var(--cyan), rgba(39,230,195,.2));
  transition:right .26s ease;
}

.nav-link:hover,.nav-link:focus-visible{
  color:var(--text-main);
  outline:none;
}

.nav-link:hover::after,.nav-link:focus-visible::after{
  right:0;
}

.nav-link.active{
  color:#fff;
}

.nav-link.active::after{
  right:0;
  box-shadow:0 0 8px rgba(39,230,195,.65);
}

.site-actions{
  display:inline-flex;
  align-items:center;
  gap:14px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:0;
  width:auto;
  font-weight:600;
  border-radius:10px;
  cursor:pointer;
  background:transparent;
  color:var(--text-main);
  transition:transform .24s ease, box-shadow .24s ease, background .24s ease, border-color .24s ease;
}

.btn:focus-visible,.btn:focus,.site-header .btn:focus{
  outline:none;
  box-shadow:0 0 0 3px rgba(39,230,195,.28);
}

.btn-primary{
  background:linear-gradient(135deg, var(--green), #1bc6a3 65%, var(--cyan));
  color:#03251d;
  box-shadow:0 6px 20px rgba(36,226,164,.32), inset 0 1px 0 rgba(255,255,255,.42);
}

.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(36,226,164,.48), inset 0 1px 0 rgba(255,255,255,.5);
}

.btn-ghost{
  border:1px solid var(--border);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(8px);
  color:var(--text-main);
}

.btn-ghost:hover{
  border-color:rgba(39,230,195,.6);
  background:var(--cyan-soft);
  transform:translateY(-2px);
}

.btn-sm{
  padding:8px 16px;
  font-size:13px;
}

.btn-md{
  padding:11px 20px;
  font-size:14px;
}

.btn-lg{
  padding:14px 28px;
  font-size:15px;
}

.btn-cta{
  color:#03251d;
}

.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.06);
  color:var(--text-main);
  border:1px solid var(--border);
  border-radius:12px;
  font-size:18px;
}

.nav-toggle:focus-visible{
  outline:2px solid var(--cyan);
}

.page-hero{
  position:relative;
  isolation:isolate;
  background-color:var(--bg-deep);
  background-image:
    linear-gradient(90deg, rgba(5,10,21,.82) 0%, rgba(5,10,21,.5) 55%, rgba(5,10,21,.32) 100%),
    linear-gradient(0deg, rgba(7,13,27,.88), rgba(7,13,27,.08)),
    url('/assets/images/backpic/back-2.webp');
  background-repeat:no-repeat;
  background-position:center;
  background-size:cover;
  border-bottom:1px solid rgba(255,255,255,.06);
}

.page-hero::after{
  content:"";
  position:absolute;
  inset:auto 0 0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(39,230,195,.72), transparent);
  z-index:1;
}

.page-hero .grid-container{
  position:relative;
  z-index:2;
}

.cat-hero{
  padding:88px 0 70px;
  align-items:center;
}

.hero-copy{
  padding-right:28px;
}

.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--cyan);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  background:rgba(39,230,195,.1);
  border:1px solid rgba(39,230,195,.22);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:22px;
}

.hero-copy h1{
  font-size:clamp(38px, 5vw, 62px);
  line-height:1.16;
  font-weight:700;
  color:#fff;
  letter-spacing:-.02em;
  margin-bottom:16px;
}

.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-sub);
  max-width:600px;
  margin-bottom:26px;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

.hero-panel{
  background:rgba(255,255,255,.065);
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  padding:10px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}

.hero-panel::before{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.35), transparent 70%);
}

.panel-entry{
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:18px 16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}

.panel-entry:last-child{
  border-bottom:0;
}

.panel-icon{
  width:44px;
  height:44px;
  flex:0 0 44px;
  border-radius:13px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--cyan-soft);
  color:var(--cyan);
  font-size:18px;
  box-shadow:inset 0 0 0 1px rgba(39,230,195,.15);
}

.panel-entry strong{
  display:block;
  color:#f5f8ff;
  font-size:15px;
  margin-bottom:3px;
}

.panel-entry p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.65;
  margin-bottom:0;
}

.doc-wrap{
  padding:68px 0 80px;
  position:relative;
  z-index:2;
}

.doc-layout{
  align-items:flex-start;
}

.toc-col{
  margin-bottom:32px;
}

.toc-sticky{
  position:sticky;
  top:104px;
  background:rgba(255,255,255,.055);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:26px 22px;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-md);
}

.toc-heading{
  display:flex;
  align-items:center;
  gap:8px;
  color:#fff;
  font-size:16px;
  font-weight:700;
  letter-spacing:.03em;
  margin-bottom:6px;
}

.toc-heading i{
  color:var(--cyan);
  font-size:15px;
}

.toc-subtitle{
  font-size:12px;
  color:var(--text-dim);
  margin-bottom:18px;
}

.toc-list{
  display:flex;
  flex-direction:column;
  gap:3px;
}

.toc-link{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text-sub);
  font-size:14px;
  padding:9px 12px;
  border-radius:10px;
  transition:background .2s ease,color .2s ease, transform .2s ease;
}

.toc-link i{
  width:18px;
  font-size:13px;
  color:var(--text-dim);
}

.toc-link:hover,.toc-link:focus-visible{
  background:var(--cyan-soft);
  color:var(--text-main);
  transform:translateX(3px);
  outline:none;
}

.toc-link.active{
  border-left:3px solid var(--cyan);
  background:rgba(39,230,195,.1);
  color:var(--text-main);
}

.toc-caption{
  margin-top:20px;
  background:rgba(255,255,255,.035);
  border:1px dashed rgba(255,255,255,.13);
  border-radius:12px;
  padding:14px;
  font-size:13px;
  line-height:1.7;
  color:var(--text-sub);
}

.toc-caption a{
  color:var(--cyan);
  font-weight:600;
}

.toc-caption a:hover{
  text-decoration:underline;
}

.content-col{
  min-width:0;
}

.doc-content{
  display:flex;
  flex-direction:column;
  gap:24px;
}

.doc-section{
  background:linear-gradient(145deg, rgba(255,255,255,.065), rgba(255,255,255,.035));
  border:1px solid var(--border);
  border-radius:20px;
  padding:30px 34px 34px;
  box-shadow:0 14px 44px rgba(0,0,0,.14);
  transition:border-color .2s ease;
  overflow:hidden;
}

.doc-section h2{
  display:flex;
  align-items:center;
  gap:16px;
  color:#fff;
  font-size:25px;
  font-weight:700;
  line-height:1.4;
  margin-bottom:14px;
}

.doc-section h2 .sec-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:44px;
  height:44px;
  padding:0 8px;
  background:var(--cyan-soft);
  color:var(--cyan);
  font-family:var(--font-num);
  font-size:16px;
  font-weight:700;
  border-radius:12px;
  box-shadow:inset 0 0 0 1px rgba(39,230,195,.25);
}

.sec-desc{
  color:var(--text-sub);
  font-size:15px;
  margin:0 0 26px;
  max-width:760px;
}

.doc-section h3{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:18px;
  font-weight:700;
  color:#f2f6ff;
  margin:26px 0 12px;
}

.doc-section h3 i{
  color:var(--cyan);
  font-size:15px;
}

.doc-section p{
  color:var(--text-sub);
  margin-bottom:14px;
  line-height:1.9;
}

.dual-line{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:16px;
  margin:20px 0 4px;
}

.dual-line .guide-cell{
  background:rgba(8,15,30,.6);
  border:1px solid rgba(255,255,255,.1);
  border-radius:15px;
  padding:20px;
}

.guide-cell .guide-icon{
  width:38px;
  height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:11px;
  background:rgba(39,230,195,.1);
  color:var(--cyan);
  margin-bottom:14px;
}

.guide-cell strong{
  display:block;
  font-size:15px;
  color:#eef3ff;
  margin-bottom:8px;
}

.guide-cell p{
  font-size:13px;
  line-height:1.75;
  color:var(--text-sub);
  margin-bottom:0;
}

.steps{
  display:flex;
  flex-direction:column;
  gap:22px;
  margin:22px 0 28px;
}

.step-item{
  position:relative;
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:18px;
}

.step-item::before{
  content:"";
  position:absolute;
  left:25px;
  top:52px;
  bottom:-22px;
  width:1px;
  background:linear-gradient(180deg, rgba(39,230,195,.4), rgba(39,230,195,.05));
}

.step-item:last-child::before{
  display:none;
}

.step-num{
  width:52px;
  height:52px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-num);
  font-weight:700;
  font-size:17px;
  color:var(--cyan);
  background:rgba(39,230,195,.08);
  border:1px solid rgba(39,230,195,.28);
  box-shadow:0 0 18px rgba(39,230,195,.08);
}

.step-text strong{
  display:block;
  color:#f1f5ff;
  font-size:16px;
  margin-bottom:5px;
}

.step-text p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
  margin-bottom:0;
}

.note-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:16px;
  margin-top:26px;
}

.note-card{
  border-radius:16px;
  padding:20px 22px;
  position:relative;
  overflow:hidden;
}

.note-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
}

.note-tip{
  background:rgba(39,230,195,.08);
  border:1px solid rgba(39,230,195,.22);
}

.note-tip::before{
  background:var(--cyan);
}

.note-tip .note-icon{
  color:var(--cyan);
}

.note-amber{
  background:var(--amber-soft);
  border:1px solid rgba(255,200,87,.35);
}

.note-amber::before{
  background:var(--amber);
}

.note-amber .note-icon{
  color:var(--amber);
}

.note-plain{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
}

.note-plain::before{
  background:#9fb6dd;
}

.note-plain .note-icon{
  color:#9fb6dd;
}

.note-card .note-icon{
  font-size:15px;
  margin-bottom:10px;
  display:block;
}

.note-card strong{
  display:block;
  font-size:14px;
  margin-bottom:6px;
  color:#eef3ff;
}

.note-card p{
  font-size:13px;
  line-height:1.7;
  margin:0;
  color:var(--text-sub);
}

.platform-grid{
  display:grid;
  grid-template-columns:repeat(4, minmax(0,1fr));
  gap:14px;
  margin-top:22px;
}

.platform-cell{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;
  padding:20px 14px 18px;
  text-align:center;
  transition:transform .2s ease, border-color .2s ease, background .2s ease;
}

.platform-cell:hover{
  transform:translateY(-4px);
  border-color:rgba(39,230,195,.42);
  background:rgba(39,230,195,.08);
}

.platform-cell i{
  font-size:24px;
  color:var(--cyan);
  margin-bottom:10px;
}

.platform-cell strong{
  display:block;
  font-size:15px;
  color:#eef3ff;
  margin-bottom:6px;
}

.platform-cell span{
  font-size:12px;
  color:var(--text-sub);
  line-height:1.6;
}

.security-split{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:30px;
  align-items:center;
  margin-top:10px;
}

.security-copy .check-list{
  display:flex;
  flex-direction:column;
  gap:15px;
  margin-top:18px;
}

.check-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
}

.check-list li i{
  width:30px;
  height:30px;
  flex:0 0 30px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--green-soft);
  color:var(--green);
  border:1px solid rgba(36,226,164,.28);
  font-size:12px;
  margin-top:5px;
}

.check-list li strong{
  display:block;
  color:#eef3ff;
  font-size:14px;
  margin-bottom:2px;
}

.check-list li p{
  font-size:13px;
  line-height:1.7;
  color:var(--text-sub);
  margin-bottom:0;
}

.security-art{
  position:relative;
}

.security-art img{
  border-radius:18px;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-lg);
  object-fit:cover;
  width:100%;
}

.security-art figcaption{
  margin-top:10px;
  font-size:12px;
  color:var(--text-dim);
  text-align:center;
}

.flow-row{
  display:grid;
  grid-template-columns:repeat(4, minmax(0,1fr));
  gap:16px;
  margin-top:20px;
}

.flow-cell{
  position:relative;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.1);
  border-radius:15px;
  padding:24px 18px;
}

.flow-cell .flow-tag{
  display:inline-flex;
  font-family:var(--font-num);
  font-weight:700;
  font-size:12px;
  color:var(--cyan);
  background:var(--cyan-soft);
  border-radius:6px;
  padding:3px 9px;
  margin-bottom:12px;
}

.flow-cell strong{
  display:block;
  color:#eef3ff;
  font-size:15px;
  margin-bottom:8px;
}

.flow-cell p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.75;
  margin-bottom:0;
}

.inline-cta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  background:rgba(39,230,195,.09);
  border:1px solid rgba(39,230,195,.28);
  border-radius:16px;
  padding:20px 22px;
  margin-top:28px;
}

.inline-cta p{
  margin:0;
  color:var(--text-sub);
  font-size:14px;
}

.inline-cta a{
  color:var(--cyan);
  font-weight:600;
  font-size:14px;
  white-space:nowrap;
}

.inline-cta a:hover{
  text-decoration:underline;
}

.faq-area{
  padding:30px;
}

.faq-list{
  margin-top:24px;
  display:flex;
  flex-direction:column;
  gap:14px;
}

.faq-item{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .2s ease, background .2s ease;
}

.faq-item.open{
  border-color:rgba(39,230,195,.55);
  background:rgba(39,230,195,.07);
}

.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  background:transparent;
  border:0;
  text-align:left;
  color:#edf3ff;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  line-height:1.6;
}

.faq-q i{
  flex:0 0 auto;
  color:var(--cyan);
  font-size:14px;
  transition:transform .3s ease;
}

.faq-item.open .faq-q i{
  transform:rotate(45deg);
}

.faq-q:focus-visible{
  outline:2px solid var(--cyan);
}

.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .36s ease;
}

.faq-item.open .faq-a{
  max-height:600px;
}

.faq-a-inner{
  padding:4px 20px 22px;
  color:var(--text-sub);
  font-size:14px;
  line-height:1.9;
  border-top:1px solid rgba(255,255,255,.08);
  margin:0 20px 0;
  padding:16px 0 18px;
}

.faq-a-inner p{
  margin-bottom:8px;
}

.faq-a-inner a{
  color:var(--cyan);
  font-weight:600;
}

.help-cta{
  background:linear-gradient(180deg, rgba(10,16,32,.9), rgba(7,13,27,.85));
  padding:76px 0 80px;
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
  position:relative;
  overflow:hidden;
}

.help-cta::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(circle at 70% 10%, rgba(39,230,195,.18), transparent 40%);
  pointer-events:none;
}

.help-cta .grid-container{
  position:relative;
  z-index:2;
}

.cta-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}

.cta-box h2{
  color:#fff;
  font-size:clamp(24px,3.6vw,34px);
  line-height:1.4;
  margin-bottom:8px;
}

.cta-box p{
  color:var(--text-sub);
  font-size:15px;
  max-width:580px;
}

.cta-btn-group{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  flex-shrink:0;
}

.footer-nav-more,.footer-col a{
  color:var(--text-sub);
  transition:color .2s ease;
}

.site-footer{
  background:#060b17;
  padding-top:58px;
  padding-bottom:24px;
  border-top:1px solid rgba(255,255,255,.06);
}

.site-footer .footer-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);
  gap:42px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.06);
}

.site-footer .brand{
  margin-bottom:12px;
}

.site-footer p{
  color:var(--text-sub);
  font-size:13px;
  line-height:1.85;
  max-width:400px;
  margin-bottom:0;
}

.footer-col h4{
  color:#e6edfa;
  font-size:15px;
  font-weight:600;
  margin-bottom:14px;
}

.footer-col a{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:10px;
  font-size:14px;
  line-height:1.6;
}

.footer-col a:hover,.footer-col a:focus-visible{
  color:#fff;
  outline:none;
}

.footer-col a i{
  color:var(--cyan);
  font-size:13px;
}

.footer-copy{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:26px;
  color:var(--text-dim);
  font-size:13px;
}

.footer-copy span:last-child{
  color:var(--text-dim);
}

@media (max-width:1024px){
  .header-inner{
    height:72px;
    padding:0 16px;
  }

  .site-nav{
    display:none;
    position:fixed;
    top:72px;
    left:0;
    right:0;
    z-index:900;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(7,13,27,.98);
    border-bottom:1px solid rgba(255,255,255,.1);
    padding:18px 20px 24px;
    box-shadow:0 25px 60px rgba(0,0,0,.38);
  }

  .site-nav.open{
    display:flex;
  }

  .site-nav .nav-link{
    padding:13px 4px;
    font-size:16px;
    border-bottom:1px solid rgba(255,255,255,.06);
  }

  .site-nav .nav-link::after{
    bottom:4px;
  }

  .site-nav .site-actions{
    padding-top:16px;
  }

  .nav-toggle{
    display:inline-flex;
  }

  .dual-line,.note-grid{
    grid-template-columns:1fr;
  }

  .platform-grid{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .flow-row{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
}

@media (max-width:900px){
  .doc-section{
    padding:24px 22px;
  }

  .security-split{
    grid-template-columns:1fr;
  }

  .cta-box{
    flex-direction:column;
    align-items:flex-start;
  }

  .site-footer .footer-grid{
    grid-template-columns:repeat(2, 1fr);
    gap:30px;
  }
}

@media (max-width:600px){
  .page-hero .grid-container{
    padding-left:16px;
    padding-right:16px;
  }

  .cat-hero{
    padding:56px 0 46px;
  }

  .hero-copy{
    padding-right:0;
  }

  .hero-copy h1{
    font-size:36px;
    line-height:1.14;
  }

  .hero-lead{
    font-size:15px;
  }

  .hero-actions .btn{
    width:100%;
  }

  .doc-wrap{
    padding:44px 0 54px;
  }

  .doc-section h2{
    align-items:flex-start;
    flex-direction:column;
    gap:10px;
    font-size:22px;
  }

  .steps{
    gap:18px;
  }

  .step-item{
    grid-template-columns:44px minmax(0,1fr);
    gap:12px;
  }

  .step-item::before{
    left:21px;
    top:46px;
    bottom:-18px;
  }

  .step-num{
    width:44px;
    height:44px;
    font-size:15px;
  }

  .platform-grid{
    grid-template-columns:1fr;
  }

  .flow-row{
    grid-template-columns:1fr;
  }

  .inline-cta{
    flex-direction:column;
    align-items:flex-start;
  }

  .site-footer .footer-grid{
    grid-template-columns:1fr;
    gap:26px;
  }

  .footer-copy{
    flex-direction:column;
  }
}

@media print{
  .site-header,.nav-toggle,.help-cta,.toc-sticky,.footer-cta{
    display:none !important;
  }

  body{
    background:#fff;
    color:#111;
  }

  .doc-section,.toc-sticky{
    box-shadow:none;
  }
}