/* roulang page: index */
:root{
  --bg:#060A13;
  --bg-2:#0B1220;
  --bg-card:#101A2D;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(13,20,36,.78);
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text:#DCE5F0;
  --muted:#8B9BB4;
  --brand:#2F7BFF;
  --brand-2:#00D4FF;
  --neon:#00E5FF;
  --purple:#8B5CF6;
  --green:#34D399;
  --red:#F87171;
  --radius-xl:20px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-lg:0 16px 40px rgba(0,0,0,.35);
  --glow:0 0 18px rgba(0,212,255,.32);
  --container:1240px;
  --header-h:72px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,li,figure{margin:0;padding:0}
ul{list-style:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none}
input,textarea{font:inherit}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:3px;
  border-radius:6px;
}
.container{width:min(var(--container),calc(100% - 48px));margin-left:auto;margin-right:auto}
.gradient-text{
  background:linear-gradient(135deg,#6EB7FF 10%,#00E5FF 90%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}
.section{position:relative;padding:96px 0}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,.018),transparent 40%)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border:1px solid rgba(0,229,255,.22);
  background:rgba(0,229,255,.06);
  border-radius:var(--radius-pill);
  color:#9DEDFF;
  font-size:13px;
  font-weight:600;
  letter-spacing:.5px;
  margin-bottom:18px;
}
.section-head{max-width:820px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:36px;line-height:1.3;font-weight:800;letter-spacing:-.5px}
.section-head .lead{margin-top:16px;color:var(--muted);font-size:17px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--radius-md);
  font-weight:700;
  font-size:15px;
  line-height:1;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;
  box-shadow:0 0 18px rgba(0,212,255,.35),0 8px 24px rgba(31,106,255,.2);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 26px rgba(0,212,255,.5),0 12px 32px rgba(31,106,255,.3);
  color:#fff;
}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 0 14px rgba(0,212,255,.3)}
.btn-ghost{
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
  color:var(--text);
  box-shadow:none;
}
.btn-ghost:hover{border-color:rgba(0,229,255,.55);color:#E9F6FF;transform:translateY(-2px);box-shadow:0 0 18px rgba(0,229,255,.18)}
.btn-block{width:100%}
.btn-lg{min-height:54px;padding:0 34px;font-size:17px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  color:#7FE3FF;
  transition:color .2s ease,gap .2s ease;
}
.text-link:hover{color:#B6F4FF;gap:11px}
.icon-16{width:16px;height:16px;flex:none}
.icon-18{width:18px;height:18px;flex:none}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  background:rgba(0,229,255,.09);
  border:1px solid rgba(0,229,255,.18);
  color:#9DEDFF;
  font-size:12px;
  font-weight:700;
  line-height:1.4;
}
.badge-purple{
  background:rgba(139,92,246,.1);
  border-color:rgba(139,92,246,.24);
  color:#C9B6FD;
}
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  height:var(--header-h);
  background:rgba(6,10,19,.55);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
  border-bottom:1px solid rgba(255,255,255,.04);
}
.site-header.is-scrolled{
  background:rgba(6,10,19,.88);
  border-bottom-color:rgba(0,229,255,.12);
  box-shadow:0 10px 32px rgba(0,0,0,.26),0 0 1px rgba(0,229,255,.22);
}
.nav-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  position:relative;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  font-weight:800;
  letter-spacing:.2px;
  flex:none;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,rgba(47,123,255,.28),rgba(0,212,255,.16));
  border:1px solid rgba(0,212,255,.34);
  box-shadow:0 0 16px rgba(0,212,255,.14);
}
.logo-text{font-size:19px;line-height:1.1;color:#F3F9FF}
.logo-text b{
  background:linear-gradient(135deg,#6EB7FF 0%,#00E5FF 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  font-weight:900;
}
.main-nav{display:flex;align-items:center;gap:26px;flex:1;justify-content:space-between}
.menu-list{display:flex;align-items:center;gap:2px}
.menu-item>a{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 16px;
  color:#B7C6DA;
  font-size:15px;
  font-weight:600;
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.menu-item>a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:28px;
  height:2px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--neon),var(--purple));
  transform:translateX(-50%) scaleX(0);
  opacity:0;
  transition:opacity .2s ease,transform .2s ease;
  box-shadow:0 0 12px rgba(0,229,255,.75);
}
.menu-item>a:hover{color:#EAF6FF}
.menu-item>a:hover::after{opacity:.7;transform:translateX(-50%) scaleX(1)}
.menu-item.active>a{
  color:#fff;
  background:rgba(255,255,255,.04);
}
.menu-item.active>a::after{opacity:1;transform:translateX(-50%) scaleX(1)}
.nav-cta{flex:none}
.nav-cta .btn{min-height:38px;padding:0 18px;font-size:14px;border-radius:10px}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.05);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  padding:10px;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{
  display:block;
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle:hover{border-color:rgba(0,229,255,.5)}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{
  position:relative;
  padding:calc(var(--header-h) + 78px) 0 90px;
  background-image:
    linear-gradient(95deg,rgba(6,10,19,.94) 0%,rgba(10,17,29,.85) 48%,rgba(7,13,25,.74) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 20% 40%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 20% 40%,#000 0%,transparent 72%);
}
.hero::after{
  content:"";
  position:absolute;
  top:-20%;
  right:-8%;
  width:560px;
  height:560px;
  pointer-events:none;
  background:radial-gradient(circle,rgba(0,229,255,.12),transparent 65%);
  filter:blur(40px);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.14fr) minmax(360px,.86fr);
  gap:64px;
  align-items:center;
}
.hero-copy{max-width:760px}
.hero-copy h1{
  font-size:52px;
  line-height:1.25;
  letter-spacing:-1px;
  font-weight:800;
  margin:16px 0 22px;
  color:#F4F9FF;
}
.hero-copy .subtitle{font-size:18px;color:var(--muted);max-width:720px;line-height:1.85}
.hero-data{display:flex;flex-wrap:wrap;gap:0;margin-top:34px}
.hero-data li{
  padding-right:28px;
  margin-right:28px;
  border-right:1px solid var(--line);
}
.hero-data li:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-data b{display:block;font-size:24px;font-weight:800;line-height:1.3;color:#EAF6FF}
.hero-data span{font-size:13px;color:var(--muted)}
.entry-card{
  position:relative;
  z-index:3;
  background:rgba(17,27,44,.65);
  border:1px solid rgba(255,255,255,.12);
  border-top:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow-lg),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:30px;
  margin-right:18px;
  overflow:hidden;
}
.entry-card::before{
  content:"";
  position:absolute;
  width:240px;
  height:240px;
  right:-80px;
  top:-80px;
  background:radial-gradient(circle,rgba(0,212,255,.16),transparent 68%);
  pointer-events:none;
}
.entry-head{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#EDF7FF}
.entry-head .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px rgba(52,211,153,.9)}
.entry-card>p{color:var(--muted);font-size:14px;margin:13px 0 22px;line-height:1.75}
.entry-list{display:grid;gap:10px;margin-top:22px}
.entry-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#AFC2D8}
.entry-list .ek{
  width:20px;height:20px;
  border-radius:50%;
  flex:none;
  background:rgba(0,229,255,.12);
  border:1px solid rgba(0,229,255,.25);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:1px;
}
.entry-list svg{width:11px;height:11px;stroke:var(--neon)}

/* verify strip */
.verify-wrap{margin-top:-32px;position:relative;z-index:5}
.verify-panel{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:rgba(15,25,42,.88);
  border:1px solid rgba(255,255,255,.1);
  border-top:1px solid rgba(255,255,255,.16);
  border-radius:20px;
  box-shadow:0 18px 50px rgba(0,0,0,.38),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
}
.verify-item{display:flex;align-items:flex-start;gap:14px;padding:26px 26px}
.verify-item+.verify-item{border-left:1px solid var(--line)}
.verify-item .v-icon{
  width:40px;
  height:40px;
  flex:none;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(0,229,255,.08);
  border:1px solid rgba(0,229,255,.2);
  color:var(--neon);
}
.verify-item b{display:block;font-size:15px;font-weight:800;color:#E6F1FF;margin-bottom:5px}
.verify-item p{font-size:13px;color:var(--muted);line-height:1.65}

/* process */
.process-wrap{position:relative}
.process-list{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:28px;
  align-items:start;
  position:relative;
}
.process-list::before{
  content:"";
  position:absolute;
  top:42px;
  left:14%;
  right:14%;
  height:2px;
  background:repeating-linear-gradient(90deg,rgba(0,229,255,.5) 0 8px,transparent 8px 16px);
  opacity:.45;
  z-index:0;
  pointer-events:none;
}
.process-card{
  position:relative;
  z-index:1;
  background:rgba(16,26,45,.88);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-xl);
  box-shadow:0 14px 36px rgba(0,0,0,.26);
  padding:30px 30px 32px;
  transition:border-color .25s ease,transform .25s ease;
}
.process-card:hover{border-color:rgba(0,229,255,.3)}
.process-card:nth-child(1){margin-top:0}
.process-card:nth-child(2){margin-top:42px}
.process-card:nth-child(3){margin-top:-18px}
.process-card .pc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.process-card .pc-icon{
  width:48px;
  height:48px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,rgba(47,123,255,.16),rgba(0,212,255,.1));
  border:1px solid rgba(0,212,255,.25);
  color:var(--neon);
}
.process-card .pc-num{
  font-size:44px;
  font-weight:900;
  line-height:1;
  color:rgba(255,255,255,.08);
  font-variant-numeric:tabular-nums;
  letter-spacing:-2px;
}
.process-card h3{font-size:20px;font-weight:800;margin-bottom:10px;color:#EDF5FF}
.process-card p{font-size:15px;line-height:1.8;color:var(--muted);margin-bottom:16px}
.process-foot{text-align:center;margin-top:60px}

/* cases */
.cases-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px}
.cases-actions{display:flex;gap:10px;flex:none}
.case-btn{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:#B7C6DA;
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.04);
  transition:color .2s,border-color .2s,box-shadow .2s,background .2s;
}
.case-btn:hover{color:var(--neon);border-color:rgba(0,229,255,.55);box-shadow:0 0 15px rgba(0,229,255,.16)}
.cases-viewport{
  display:flex;
  overflow-x:auto;
  scroll-behavior:smooth;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  margin-right:calc((100vw - var(--container)) / -2);
  margin-left:calc((100vw - var(--container)) / -2);
  padding-left:max(24px,calc((100vw - var(--container)) / 2));
  padding-right:max(24px,calc((100vw - var(--container)) / 2));
}
.cases-viewport::-webkit-scrollbar{display:none}
.cases-track{display:flex;gap:24px;padding:6px 0 2px;width:max-content}
.case-card{
  width:360px;
  max-width:86vw;
  flex:none;
  background:rgba(14,22,38,.86);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-xl);
  overflow:hidden;
  transition:transform .25s ease,border-color .25s ease;
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(0,229,255,.34)}
.case-media{height:180px;background:linear-gradient(135deg,#101A2D,#16233e);position:relative;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover;opacity:.85}
.case-media .band{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:52px;
  background:linear-gradient(180deg,transparent,rgba(6,10,19,.88));
}
.case-cat{
  position:absolute;
  left:16px;
  top:16px;
  z-index:2;
}
.case-body{padding:22px 24px 24px}
.case-body blockquote{color:#C6D5E8;font-size:15px;line-height:1.8}
.case-body blockquote::before{content:"“";display:inline;color:rgba(0,229,255,.4);font-size:26px;vertical-align:-5px;font-family:Georgia,serif;margin-right:2px}
.case-body blockquote::after{content:"”";display:inline;color:rgba(0,229,255,.4);font-size:26px;vertical-align:-5px;font-family:Georgia,serif;margin-left:2px}
.case-foot{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.case-foot .avatar{
  width:32px;height:32px;
  border-radius:50%;
  flex:none;
  background:linear-gradient(135deg,rgba(0,229,255,.25),rgba(139,92,246,.3));
  border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;
  color:var(--text);
  font-size:12px;
  font-weight:800;
}
.case-foot span{font-size:13px;color:var(--muted)}

/* latest */
.latest-wrap{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.latest-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:30px;align-items:stretch}
.feature-card{
  display:flex;
  flex-direction:column;
  background:linear-gradient(150deg,rgba(14,23,41,.96),rgba(9,15,27,.9));
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-xl);
  overflow:hidden;
  transition:border-color .25s ease;
}
.feature-card:hover{border-color:rgba(0,229,255,.3)}
.feature-media{position:relative;height:230px;overflow:hidden}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media::after{content:"";position:absolute;inset:auto 0 0 0;height:100px;background:linear-gradient(180deg,transparent,rgba(6,10,19,.96))}
.feature-media img{transition:transform .45s ease}
.feature-card:hover .feature-media img{transform:scale(1.035)}
.feature-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.feature-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--muted);font-size:13px}
.feature-body h3{font-size:22px;line-height:1.5;font-weight:800}
.feature-body h3 a{color:#EAF3FF;transition:color .2s}
.feature-body h3 a:hover{color:var(--neon)}
.feature-body p{color:var(--muted);font-size:15px;line-height:1.75;flex:1}
.feature-body .bottom-link{border-top:1px solid var(--line);padding-top:16px}
.latest-list{display:flex;flex-direction:column;gap:14px}
.latest-row{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:88px;
  padding:14px 18px;
  background:rgba(15,24,41,.78);
  border:1px solid rgba(255,255,255,.09);
  border-radius:16px;
  transition:border-color .2s,background .2s,transform .2s;
}
.latest-row:hover{border-color:rgba(0,229,255,.34);background:rgba(18,30,51,.9);transform:translateY(-2px)}
.latest-row-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}
.latest-row-top{display:flex;align-items:center;gap:10px}
.latest-row-title{display:block;font-size:16px;font-weight:700;color:#DDE9F6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.latest-row-summary{
  display:block;
  font-size:13px;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.latest-row-side{
  flex:none;
  display:flex;
  align-items:center;
  gap:18px;
  color:var(--muted);
  font-size:13px;
}
.latest-row-side time{white-space:nowrap}
.latest-list-placeholder{
  min-height:88px;
  border:1px dashed rgba(255,255,255,.14);
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  color:var(--muted);
  font-size:14px;
  background:rgba(255,255,255,.012);
}
.latest-empty{
  min-height:280px;
  border:1px dashed rgba(255,255,255,.13);
  border-radius:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:14px;
  background:rgba(255,255,255,.012);
  text-align:center;
}
.latest-empty svg{width:40px;height:40px;color:rgba(0,229,255,.5)}
.latest-empty p{color:var(--muted);font-size:18px}

/* faq layout */
.faq-row{display:grid;grid-template-columns:minmax(280px,.82fr) minmax(0,1.18fr);gap:60px;align-items:start}
.faq-aside{position:sticky;top:100px}
.faq-aside h2{font-size:36px;font-weight:800;line-height:1.3;letter-spacing:-.5px}
.faq-aside>p{color:var(--muted);font-size:16px;margin-top:18px;line-height:1.8}
.accordion{display:flex;flex-direction:column;gap:14px}
details.faq-item{
  border-radius:16px;
  background:rgba(15,24,41,.74);
  border:1px solid rgba(255,255,255,.09);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
details.faq-item[open]{border-color:rgba(0,229,255,.26);box-shadow:0 14px 34px rgba(0,0,0,.22)}
details.faq-item summary{
  list-style:none;
  position:relative;
  min-height:60px;
  padding:16px 54px 16px 20px;
  display:flex;
  align-items:center;
  font-size:16px;
  font-weight:800;
  cursor:pointer;
  color:#E5EFF9;
  user-select:none;
}
details.faq-item summary::-webkit-details-marker{display:none}
details.faq-item summary::after{
  content:"";
  position:absolute;
  right:20px;
  top:50%;
  width:9px;
  height:9px;
  border-right:2px solid #7DD9FF;
  border-bottom:2px solid #7DD9FF;
  transform:translateY(-70%) rotate(45deg);
  transition:transform .2s ease;
}
details.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg)}
details.faq-item .faq-a{
  padding:0 22px 22px;
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  border-top:1px solid rgba(255,255,255,.06);
  margin-left:20px;
  margin-right:20px;
  padding-top:16px;
}

/* cta */
.cta-band{
  position:relative;
  padding:110px 0;
  background-image:linear-gradient(rgba(6,10,19,.86),rgba(8,12,24,.92)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  text-align:center;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  width:700px;
  height:420px;
  background:radial-gradient(ellipse,rgba(0,229,255,.13),transparent 65%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2}
.cta-inner h2{font-size:40px;line-height:1.3;font-weight:900;letter-spacing:-.8px}
.cta-inner p{max-width:620px;margin:18px auto 34px;color:var(--muted);font-size:17px;line-height:1.8}

/* footer */
.site-footer{background:#03060C;border-top:1px solid rgba(0,229,255,.12);position:relative}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,255,.4),transparent);
}
.footer-top{padding:76px 0 36px;display:grid;grid-template-columns:2.1fr 1fr 1fr 1.6fr;gap:50px}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--muted);margin-top:20px;max-width:360px}
.footer-col h4{color:#F3F9FF;font-size:16px;font-weight:800;margin-bottom:20px}
.footer-links{display:grid;gap:11px}
.footer-links a{
  font-size:14px;
  color:var(--muted);
  transition:color .2s,text-shadow .2s;
  display:inline-block;
}
.footer-links a:hover{color:var(--neon);text-shadow:0 0 14px rgba(0,229,255,.5)}
.footer-info{font-size:14px;color:var(--muted);line-height:2}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  color:#66788E;
  font-size:13px;
  flex-wrap:wrap;
}
.footer-bottom .domain{color:#869BAF;font-family:Consolas,Menlo,monospace}

/* media */
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .site-header .main-nav{
    position:absolute;
    top:var(--header-h);
    left:0;
    width:100%;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    display:none;
    flex-direction:column;
    align-items:stretch;
    padding:22px 24px 30px;
    background:rgba(6,10,19,.96);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(0,229,255,.14);
    box-shadow:0 24px 48px rgba(0,0,0,.6);
    gap:20px;
    justify-content:flex-start;
  }
  .site-header.nav-open .main-nav{display:flex}
  .site-header.nav-open{border-bottom-color:transparent}
  .menu-list{flex-direction:column;gap:2px;align-items:stretch}
  .menu-item>a{width:100%;justify-content:flex-start;padding:14px 12px}
  .menu-item.active>a{background:rgba(255,255,255,.05)}
  .nav-cta .btn{width:100%;justify-content:center;min-height:48px}
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero{padding:calc(var(--header-h) + 52px) 0 76px}
  .verify-panel{grid-template-columns:repeat(2,1fr)}
  .verify-item+.verify-item{border-left:0}
  .verify-item:nth-child(odd){border-right:1px solid var(--line)}
  .verify-wrap{margin-top:0}
  .section{padding:72px 0}
  .process-list{grid-template-columns:1fr;max-width:680px;margin:0 auto}
  .process-list::before{display:none}
  .process-card:nth-child(2),.process-card:nth-child(3){margin-top:0}
  .cases-viewport{margin:0;padding:0}
  .case-card{width:340px}
  .latest-grid{grid-template-columns:1fr}
  .faq-row{grid-template-columns:1fr;gap:34px}
  .faq-aside{position:static}
  .footer-top{grid-template-columns:1fr 1fr}
  .hero-copy h1{font-size:42px}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .section-head h2,.faq-aside h2{font-size:28px}
  .section-head .lead{font-size:16px}
  .hero-copy h1{font-size:34px}
  .hero-copy .subtitle{font-size:16px}
  .hero-data li{padding-right:18px;margin-right:18px}
  .process-foot{margin-top:34px}
  .cta-band{padding:80px 0}
  .cta-inner h2{font-size:30px}
  .latest-row-side time{display:none}
  .footer-top{gap:40px 30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{width:calc(100% - 30px)}
  .brand .logo-text{font-size:16px}
  .hero{padding-top:calc(var(--header-h) + 28px)}
  .hero-data{flex-direction:column;align-items:flex-start;gap:0}
  .hero-data li{padding:0;border:none;margin:0 0 10px}
  .verify-panel{grid-template-columns:1fr}
  .verify-item:nth-child(odd){border-right:0}
  .verify-item{padding:18px}
  .footer-top{grid-template-columns:1fr}
  .feature-body h3{font-size:19px}
  .latest-row{padding:12px 14px}
  .case-card{width:320px}
  .btn{width:auto}
  .btn-block,.nav-cta .btn{width:100%}
  .section-head{margin-bottom:34px}
  .cases-actions{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root {
  --bg: #060A13;
  --bg-deep: #04070E;
  --panel: #0B1220;
  --panel-2: #101A2D;
  --glass: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --line: rgba(255,255,255,0.08);
  --brand: #2F7BFF;
  --cyan: #00E5FF;
  --purple: #8B5CF6;
  --btn-grad: linear-gradient(135deg, #2F7BFF 0%, #00D4FF 100%);
  --text: #DCE5F0;
  --muted: #8B9BB4;
  --strong: #FFFFFF;
  --success: #34D399;
  --error: #F87171;
  --radius-lg: 20px;
  --radius: 12px;
  --radius-sm: 10px;
  --shadow: 0 16px 40px rgba(0,0,0,0.35);
  --max: 1240px;
  --space: 96px;
}

*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
body.nav-open {
  overflow: hidden;
}
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: 24px;
  position: relative;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font: inherit;
}
ul, ol {
  margin: 0;
  padding: 0;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* header nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: 72px;
  background: rgba(6,10,19,0.82);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}
.site-header.is-scrolled {
  background: rgba(4,7,14,0.95);
  border-bottom-color: rgba(0,229,255,0.14);
  box-shadow: 0 8px 30px rgba(0,0,0,0.28);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--strong);
  font-size: 20px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: rgba(0,229,255,0.08);
  border: 1px solid rgba(0,229,255,0.2);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}
.logo-text {
  font-weight: 600;
  color: var(--strong);
}
.logo-text b {
  color: var(--cyan);
  font-weight: 800;
  margin-right: 2px;
}
.main-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 28px;
}
.menu-list {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.menu-item > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-weight: 500;
  font-size: 15px;
  line-height: 40px;
  transition: color 0.2s ease;
}
.menu-item > a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 0 12px rgba(0,229,255,0.6);
}
.menu-item > a:hover {
  color: var(--strong);
}
.menu-item > a:hover::after,
.menu-item.active > a::after {
  opacity: 1;
  transform: scaleX(1);
}
.menu-item.active > a {
  color: var(--strong);
  text-shadow: 0 0 18px rgba(0,229,255,0.45);
}
.nav-cta {
  display: flex;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 22px;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn-primary {
  color: #fff;
  background: var(--btn-grad);
  box-shadow: 0 0 18px rgba(0,212,255,0.35);
  white-space: nowrap;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(0,212,255,0.55), 0 8px 28px rgba(47,123,255,0.35);
}
.btn-primary:active {
  transform: translateY(-1px);
  box-shadow: 0 0 14px rgba(0,212,255,0.3);
}
.icon-16 {
  width: 16px;
  height: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--strong);
  transition: transform 0.3s ease, opacity 0.2s ease;
}
body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}
body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* article hero */
.article-main {
  min-height: 66vh;
}
.article-hero {
  position: relative;
  padding: 72px 0 64px;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 25%, rgba(47,123,255,0.22), transparent 34%),
    radial-gradient(circle at 82% 8%, rgba(139,92,246,0.2), transparent 30%),
    radial-gradient(circle at 60% 90%, rgba(0,229,255,0.08), transparent 28%),
    var(--bg);
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0,229,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, transparent 4%, #000 62%, transparent 96%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 4%, #000 62%, transparent 96%);
}
.article-hero .container {
  z-index: 2;
}
.breadcrumb-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 22px;
}
.breadcrumb-wrap a {
  color: var(--muted);
  transition: color 0.2s ease;
}
.breadcrumb-wrap a:hover {
  color: var(--cyan);
}
.crumb-gap {
  opacity: 0.35;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 13px;
  border-radius: 999px;
  background: rgba(139,92,246,0.14);
  border: 1px solid rgba(139,92,246,0.28);
  color: #D3C7FF;
  font-size: 13px;
  font-weight: 500;
}
.badge-light {
  background: rgba(0,229,255,0.1);
  border-color: rgba(0,229,255,0.24);
  color: #A8F4FF;
}
.page-h1 {
  margin: 0 0 20px;
  max-width: 970px;
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--strong);
  font-weight: 800;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  color: var(--muted);
  font-size: 15px;
}
.article-meta time {
  color: #BFC9DC;
  font-variant-numeric: tabular-nums;
}

/* article body */
.article-shell {
  padding: 56px 0 100px;
}
.article-body {
  max-width: 860px;
  margin: 0 auto;
  padding: 52px 56px 48px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  position: relative;
}
.article-body::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,0.3), transparent);
  border-radius: 24px;
}
.article-prose {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text);
}
.article-prose > *:first-child {
  margin-top: 0;
}
.article-prose h2 {
  margin: 2em 0 0.8em;
  color: var(--strong);
  font-size: 30px;
  line-height: 1.35;
  font-weight: 800;
}
.article-prose h3 {
  margin: 1.7em 0 0.7em;
  color: var(--strong);
  font-size: 22px;
  line-height: 1.4;
  font-weight: 700;
}
.article-prose p {
  margin: 1.6em 0;
}
.article-prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0,229,255,0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.article-prose a:hover {
  color: #fff;
  border-color: var(--cyan);
}
.article-prose ul,
.article-prose ol {
  margin: 1.4em 0;
  padding-left: 1.4em;
}
.article-prose li {
  margin: 0.55em 0;
}
.article-prose blockquote {
  margin: 2em 0;
  padding: 16px 22px;
  border-left: 3px solid var(--cyan);
  background: rgba(0,229,255,0.06);
  border-radius: 0 14px 14px 0;
  color: #C7D3E3;
}
.article-prose blockquote p {
  margin: 0;
}
.article-prose img {
  height: auto;
  border-radius: 16px;
  box-shadow: 0 14px 36px rgba(0,0,0,0.3);
}
.article-prose hr {
  margin: 2.6em 0;
  border: 0;
  border-top: 1px solid var(--line);
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 15px;
}
.article-prose table th,
.article-prose table td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
}
.article-prose table th {
  background: rgba(255,255,255,0.04);
  color: var(--strong);
}

/* article footer links */
.article-tools {
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
}
.back-home-link:hover {
  color: var(--cyan);
}
.back-home-link .icon-16 {
  transform: rotate(180deg);
}
.pager-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.article-pager-card {
  display: block;
  padding: 18px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  border-radius: 16px;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.article-pager-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(0,229,255,0.25);
  transform: translateY(-2px);
}
.pager-cap {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 7px;
}
.article-pager-card strong {
  display: block;
  color: var(--strong);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

/* empty state */
.empty-box {
  max-width: 700px;
  margin: 40px auto 0;
  padding: 70px 30px;
  text-align: center;
  background: var(--panel);
  border: 1px dashed rgba(255,255,255,0.16);
  border-radius: 24px;
}
.empty-box p {
  margin: 0 0 12px;
  color: var(--strong);
  font-size: 22px;
  font-weight: 700;
}
.empty-box .empty-sub {
  color: var(--muted);
  font-size: 15px;
  font-weight: 400;
  margin-bottom: 30px;
}

/* related section */
.related-section {
  max-width: 1120px;
  margin: 72px auto 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 30px;
}
.section-head h2 {
  margin: 0;
  color: var(--strong);
  font-size: 30px;
  font-weight: 800;
  line-height: 1.3;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 420px;
  text-align: right;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.mini-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.mini-card:hover {
  border-color: rgba(0,229,255,0.24);
  background: rgba(16,26,45,0.8);
}
.mini-thumb {
  flex: 0 0 92px;
  width: 92px;
  height: 72px;
  border-radius: 12px;
  background-size: cover;
  background-position: center;
  background-color: #0B1220;
  overflow: hidden;
  position: relative;
}
.mini-card-body {
  min-width: 0;
  display: block;
}
.mini-card-tag {
  display: inline-block;
  margin-bottom: 7px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(0,229,255,0.1);
  border: 1px solid rgba(0,229,255,0.2);
  color: #A8F4FF;
}
.mini-card-body strong {
  display: block;
  overflow: hidden;
  color: var(--strong);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 7px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.mini-card-body > span:last-child {
  display: -webkit-box;
  overflow: hidden;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* footer */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(0,229,255,0.12);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr 0.9fr 1.1fr;
  gap: 44px;
  padding: 70px 0 44px;
}
.footer-brand .brand {
  margin-bottom: 18px;
}
.footer-brand p,
.footer-info p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}
.footer-col h4 {
  margin: 0 0 18px;
  color: var(--strong);
  font-size: 17px;
  font-weight: 700;
}
.footer-links {
  list-style: none;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0,229,255,0.3);
}
.footer-info {
  font-size: 14px;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0 24px;
  border-top: 1px solid var(--line);
  color: #64748B;
  font-size: 14px;
}
.footer-bottom .domain {
  color: #7E8CA3;
  letter-spacing: 0.02em;
}

/* responsive */
@media (max-width: 1100px) {
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 1024px) {
  .site-header {
    height: 68px;
  }
  .nav-inner {
    height: 68px;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 0;
    padding: 26px 24px 40px;
    background: rgba(4,7,14,0.98);
    border-bottom: 1px solid rgba(0,229,255,0.2);
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-18px);
    transition: opacity 0.26s ease, transform 0.26s ease, visibility 0.26s ease;
  }
  body.nav-open .main-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .menu-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .menu-item > a {
    display: block;
    font-size: 17px;
    line-height: 1.4;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .menu-item > a::after {
    bottom: 8px;
  }
  .nav-cta {
    margin-top: 24px;
  }
  .btn-primary {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .article-hero {
    padding: 50px 0 44px;
  }
  .page-h1 {
    margin-bottom: 18px;
  }
  .article-body {
    padding: 34px 22px 30px;
  }
  .article-prose {
    font-size: 16px;
  }
  .pager-grid {
    grid-template-columns: 1fr;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .section-head p {
    text-align: left;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    padding: 54px 0 36px;
  }
}

@media (max-width: 560px) {
  .container {
    padding-inline: 16px;
  }
  .logo-text {
    font-size: 18px;
  }
  .nav-inner {
    gap: 14px;
  }
  .hidden-mobile {
    display: none;
  }
  .article-meta {
    font-size: 14px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .mini-card {
    align-items: flex-start;
  }
}

/* roulang page: category1 */
:root {
  --bg-body: #060A13;
  --bg-secondary: #0B1220;
  --bg-panel: #101A2D;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --line: rgba(255, 255, 255, 0.08);
  --text-primary: #DCE5F0;
  --text-secondary: #8B9BB4;
  --text-dim: #6B7A93;
  --blue: #2F7BFF;
  --cyan: #00D4FF;
  --neon: #00E5FF;
  --purple: #8B5CF6;
  --success: #34D399;
  --danger: #F87171;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 16px 40px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 18px rgba(0, 212, 255, 0.35);
  --font-base: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  font-family: var(--font-base);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover,
a:active {
  outline: none;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

button,
input,
textarea {
  font-family: inherit;
  font-size: 1rem;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.15);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(6, 10, 19, 0.74);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: box-shadow 0.3s;
}

.site-header.scrolled {
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.03);
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.22);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.08) inset;
}

.logo-text {
  font-size: 18px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.logo-text b {
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #fff, var(--neon));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-right: 6px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.menu-list {
  display: flex;
  align-items: center;
  gap: 6px;
}

.menu-item a {
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 15px;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  position: relative;
  white-space: nowrap;
}

.menu-item a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
}

.menu-item.active a {
  color: #fff;
}

.menu-item.active a::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--neon), var(--purple));
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.65);
}

.nav-cta {
  display: flex;
  align-items: center;
  margin-left: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 11px 20px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}

.btn-primary {
  background: linear-gradient(135deg, #2F7BFF 0%, #00D4FF 100%);
  color: #fff;
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.25), 0 8px 22px rgba(47, 123, 255, 0.14);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(0, 229, 255, 0.4), 0 12px 30px rgba(47, 123, 255, 0.22);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.16);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.5);
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.15);
}

.btn-ghost:active {
  transform: translateY(0);
}

.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 14px;
}

.icon-16 {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  position: relative;
  transition: background 0.3s;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform 0.28s ease, top 0.28s ease, opacity 0.2s ease;
}

.nav-toggle span:nth-child(1) {
  top: 17px;
}

.nav-toggle span:nth-child(2) {
  top: 25px;
}

.nav-toggle span:nth-child(3) {
  top: 33px;
}

body.nav-open .nav-toggle span:nth-child(1) {
  top: 24px;
  transform: translateX(-50%) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle span:nth-child(3) {
  top: 24px;
  transform: translateX(-50%) rotate(-45deg);
}

.page-head {
  position: relative;
  padding: 74px 0 64px;
  background: linear-gradient(150deg, #0B1220 0%, #101A2D 55%, #060A13 100%), url("/assets/images/backpic/back-2.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.page-head::before {
  content: "";
  position: absolute;
  left: -120px;
  top: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(47, 123, 255, 0.16);
  filter: blur(90px);
}

.page-head::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -160px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(0, 229, 255, 0.12);
  filter: blur(100px);
}

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

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 22px;
}

.breadcrumbs a {
  transition: color 0.2s;
}

.breadcrumbs a:hover {
  color: var(--neon);
}

.breadcrumbs .sep {
  color: rgba(255, 255, 255, 0.22);
}

.breadcrumbs span[aria-current="page"] {
  color: var(--text-primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.24);
  color: #B9F4FF;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.page-title,
.page-head h1 {
  font-size: clamp(34px, 5.5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  margin: 18px 0 20px;
  color: #fff;
  max-width: 760px;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.page-lead {
  max-width: 780px;
  margin: 0;
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.head-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.entry-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 46px;
  align-items: start;
  padding: 58px 0 90px;
}

.toc-sidebar {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.toc-card {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.toc-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 6px 14px;
  color: #fff;
  text-transform: none;
  letter-spacing: 0.03em;
}

.toc-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--neon);
  margin-right: 9px;
  box-shadow: 0 0 10px var(--neon);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toc-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  border-left: 2px solid transparent;
  line-height: 1.4;
}

.toc-item:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.toc-item:active {
  background: rgba(255, 255, 255, 0.04);
}

.toc-item.active {
  color: #fff;
  background: rgba(0, 229, 255, 0.07);
  border-left-color: var(--neon);
}

.toc-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 11px;
  color: var(--neon);
  font-weight: 700;
  flex-shrink: 0;
}

.side-card {
  background: linear-gradient(145deg, rgba(16, 26, 45, 0.9), rgba(10, 18, 32, 0.9));
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.side-card-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
}

.side-checks {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.side-checks li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

.side-checks li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.5);
  flex-shrink: 0;
  margin-top: 8px;
}

.side-card .btn-block {
  margin-top: 4px;
}

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

.content-section {
  margin-bottom: 80px;
  scroll-margin-top: 100px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--neon);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.section-kicker::before {
  content: "";
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--neon), transparent);
}

.content-section h2 {
  margin: 6px 0 16px;
  color: #fff;
  font-size: clamp(27px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 900px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 44px;
  align-items: center;
}

.content-grid.reverse .content-media {
  order: 2;
}

.content-grid.reverse .content-copy {
  order: 1;
}

.content-media {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  margin: 0;
}

.content-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  background: #142036;
  aspect-ratio: 4 / 3;
}

.media-caption {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  margin: 0;
  padding: 10px 14px;
  background: rgba(6, 10, 19, 0.72);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  color: #C9D8EC;
  font-size: 13px;
  line-height: 1.5;
}

.content-copy {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.content-copy p {
  margin: 0 0 16px;
}

.text-link {
  color: var(--neon);
  position: relative;
  font-weight: 600;
  transition: text-shadow 0.2s;
}

.text-link:hover {
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.step-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: #B9C8DA;
  font-size: 14px;
  line-height: 1.7;
}

.step-list li::before {
  content: attr(data-step);
  flex-shrink: 0;
  min-width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 229, 255, 0.09);
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 9px;
  color: var(--neon);
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}

.note-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 14px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
  padding: 10px 14px;
  line-height: 1.6;
}

.note-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
  flex-shrink: 0;
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    position: fixed;
    inset: 72px 0 auto 0;
    z-index: 999;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px 20px 22px;
    background: rgba(8, 13, 24, 0.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
  }

  body.nav-open .main-nav {
    display: flex;
  }

  .menu-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .menu-item a {
    padding: 14px 16px;
    border-radius: 12px;
    width: 100%;
  }

  .menu-item.active a {
    background: rgba(0, 229, 255, 0.07);
  }

  .menu-item.active a::after {
    left: 16px;
    right: auto;
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    border-radius: 4px;
  }

  .nav-cta {
    margin: 14px 0 0;
  }

  .nav-cta a {
    width: 100%;
    justify-content: center;
  }

  .entry-layout {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 40px 0 70px;
  }

  .toc-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .toc-card {
    padding: 12px;
  }

  .toc-card .toc-list {
    display: flex;
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
    scrollbar-width: thin;
  }

  .toc-item {
    flex: 0 0 auto;
    padding: 10px 14px;
    border-left: 0;
    border-bottom: 2px solid transparent;
  }

  .toc-title {
    margin: 6px 6px 10px;
  }

  .side-card {
    padding: 18px;
  }
}

@media (max-width: 860px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .content-grid.reverse .content-media {
    order: 1;
  }

  .content-grid.reverse .content-copy {
    order: 2;
  }

  .content-media img {
    height: 260px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .logo-text {
    font-size: 16px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .page-head {
    padding: 50px 0 42px;
  }

  .page-head h1 {
    font-size: 32px;
    line-height: 1.18;
  }

  .page-lead {
    font-size: 16px;
  }

  .head-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

  .content-section h2 {
    font-size: 26px;
  }

  .content-media img {
    height: 220px;
  }
}

.prefers-reduced-motion,
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.site-footer {
  background: #030610;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  position: relative;
  padding-top: 60px;
  margin-top: auto;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.3), rgba(139, 92, 246, 0.3), transparent);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1.5fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  margin: 14px 0 0;
  max-width: 360px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links li {
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s, text-shadow 0.2s;
}

.footer-links a:hover {
  color: var(--neon);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.25);
}

.footer-info p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.8;
  margin: 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: #58677D;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.footer-bottom .domain {
  letter-spacing: 0.03em;
}

@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .site-footer {
    padding-top: 40px;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category2 */
:root {
  --bg-page: #060A13;
  --bg-secondary: #0B1220;
  --bg-card: #101A2D;
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --primary: #2F7BFF;
  --cyan: #00E5FF;
  --violet: #8B5CF6;
  --text-main: #DCE5F0;
  --text-secondary: #8B9BB4;
  --divider: rgba(255, 255, 255, 0.08);
  --success: #34D399;
  --error: #F87171;
  --radius-card: 20px;
  --radius-item: 12px;
  --radius-tag: 999px;
  --shadow-card: 0 16px 40px rgba(0, 0, 0, 0.35);
  --glow-cyan: 0 0 18px rgba(0, 212, 255, 0.35);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(640px 360px at 12% -4%, rgba(47, 123, 255, 0.12), transparent 65%),
    radial-gradient(520px 320px at 88% 12%, rgba(0, 229, 255, 0.07), transparent 65%),
    radial-gradient(420px 420px at 55% 110%, rgba(139, 92, 246, 0.08), transparent 70%);
}
body .container,
body header,
body footer {
  position: relative;
  z-index: 1;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
ul,
ol {
  list-style: none;
}
button,
input,
textarea {
  font-family: inherit;
  font-size: inherit;
}
button {
  cursor: pointer;
  background: none;
  border: none;
}
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(0, 229, 255, 0.18);
}
::selection {
  background: rgba(0, 229, 255, 0.24);
  color: #fff;
}
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(6, 10, 19, 0.72);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(4, 7, 13, 0.92);
  border-bottom-color: rgba(0, 229, 255, 0.12);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  flex-shrink: 0;
  border-radius: 12px;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.logo-text {
  font-size: 18px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.logo-text b {
  font-weight: 800;
  color: #fff;
  background: linear-gradient(90deg, #fff, #bfe9ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-right: 2px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.menu-list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.menu-item a {
  position: relative;
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: #aebbd0;
  border-radius: 10px;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
}
.menu-item a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.55);
  opacity: 0;
  transform: scaleX(0.45);
  transform-origin: left center;
  transition: opacity 0.22s ease, transform 0.25s ease;
}
.menu-item a:hover,
.menu-item.active a {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.03);
}
.menu-item a:hover::after {
  opacity: 0.55;
  transform: scaleX(0.7);
}
.menu-item.active a::after {
  opacity: 1;
  transform: scaleX(1);
}
.nav-cta {
  display: flex;
  align-items: center;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.site-header.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}
.site-header.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, #2F7BFF 0%, #00D4FF 100%);
  color: #071522;
  box-shadow: 0 0 18px rgba(0, 212, 255, 0.26), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(0, 212, 255, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.32);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 14px rgba(0, 212, 255, 0.22);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: #cbd8ea;
  border-color: rgba(255, 255, 255, 0.2);
}
.btn-ghost:hover {
  border-color: rgba(0, 229, 255, 0.42);
  color: #fff;
  background: rgba(0, 229, 255, 0.07);
  transform: translateY(-2px);
}
.btn-ghost:active {
  transform: translateY(0);
}
.icon-16 {
  width: 16px;
  height: 16px;
}
.page-banner {
  position: relative;
  padding: 138px 0 58px;
  background:
    linear-gradient(180deg, rgba(6, 10, 19, 0.68) 0%, rgba(6, 10, 19, 0.9) 100%),
    url('/assets/images/backpic/back-1.png') center 40% / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.page-banner::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 360px;
  height: 260px;
  background: radial-gradient(closest-side, rgba(0, 229, 255, 0.14), transparent);
  pointer-events: none;
}
.banner-inner {
  max-width: 860px;
  margin-left: 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: #788aa6;
  margin-bottom: 18px;
}
.breadcrumb a {
  color: #9db8e8;
  transition: color 0.2s ease;
}
.breadcrumb a:hover {
  color: var(--cyan);
}
.page-banner h1 {
  font-size: clamp(32px, 4.2vw, 50px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  text-shadow: 0 0 32px rgba(0, 229, 255, 0.18);
  margin-bottom: 16px;
}
.page-banner p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 720px;
}
.faq-wrap {
  padding: 58px 0 22px;
}
.faq-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
.faq-sidebar {
  position: sticky;
  top: 96px;
}
.side-panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 18px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.side-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: #6f819e;
  margin-bottom: 12px;
  padding: 0 8px;
  text-transform: uppercase;
}
.anchor-list li + li {
  margin-top: 2px;
}
.anchor-item a {
  display: block;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: #a9b7ca;
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.anchor-item a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.08);
}
.anchor-item.active a {
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.1), rgba(139, 92, 246, 0.06));
  border-color: rgba(0, 229, 255, 0.24);
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.08);
}
.side-note {
  margin-top: 16px;
  padding: 12px 12px 10px;
  font-size: 13px;
  line-height: 1.7;
  color: #74869f;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.08);
}
.faq-main {
  min-width: 0;
}
.faq-section {
  margin-bottom: 46px;
}
.faq-section .sec-title {
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 12px;
}
.faq-section .sec-title::before {
  content: "";
  width: 5px;
  height: 24px;
  border-radius: 6px;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.35);
  flex-shrink: 0;
}
.sec-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 22px;
  padding-left: 17px;
}
.faq-card {
  position: relative;
  padding: 24px 28px;
  margin-bottom: 18px;
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.055) 0%, rgba(255, 255, 255, 0.02) 62%),
    rgba(16, 26, 45, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.faq-card:hover {
  border-color: rgba(0, 229, 255, 0.24);
}
.faq-q {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 17px;
  line-height: 1.6;
  color: #fff;
  font-weight: 700;
}
.q-badge {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  background: rgba(0, 229, 255, 0.12);
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, 0.25);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.1);
}
.faq-a {
  margin: 14px 0 0 42px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
}
.more-help {
  margin: 14px 0 20px 42px;
  font-size: 14px;
  color: #8394ad;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s ease;
}
.more-help a {
  color: #96bcff;
  border-bottom: 1px solid rgba(150, 188, 255, 0.28);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.more-help a:hover {
  color: var(--cyan);
  border-color: rgba(0, 229, 255, 0.5);
}
.path-block {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  margin: 26px 0 62px;
}
.path-main {
  padding: 38px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.path-eyebrow {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.09);
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 16px;
}
.path-main h2 {
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.25;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.path-main > p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 24px;
}
.steps-list {
  display: grid;
  gap: 16px;
}
.step-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.22s ease, border-color 0.22s ease;
}
.step-item:hover {
  background: rgba(0, 229, 255, 0.04);
  border-color: rgba(0, 229, 255, 0.14);
}
.step-num {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.24);
}
.step-item h4 {
  color: #e7edf6;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 3px;
}
.step-item p {
  color: #8799b2;
  font-size: 14px;
  line-height: 1.7;
}
.path-visual {
  position: relative;
  min-height: 330px;
  background: linear-gradient(135deg, #0e1b31, #111b2a);
  overflow: hidden;
}
.path-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6, 10, 19, 0.32) 0%, transparent 44%, rgba(6, 10, 19, 0.2) 100%);
  z-index: 1;
  pointer-events: none;
}
.path-visual img {
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: cover;
  display: block;
}
.faq-tail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 8px 0 66px;
  padding: 36px 40px;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(139, 92, 246, 0.06)),
    var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.faq-tail h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}
.faq-tail p {
  color: #8799b2;
  font-size: 15px;
  max-width: 520px;
}
.tail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.site-footer {
  background: #04070D;
  border-top: 1px solid rgba(0, 229, 255, 0.14);
  padding: 64px 0 0;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.25);
  margin-top: 30px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.9fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-brand p,
.footer-info p {
  color: #7689a3;
  font-size: 14px;
  line-height: 1.8;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #a0b1c6;
  text-transform: uppercase;
  margin: 4px 0 16px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #71839d;
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--cyan);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 22px 0;
  color: #526680;
  font-size: 13px;
}
.footer-bottom .domain {
  color: #71839d;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
@media (max-width: 1080px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 1024px) {
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .faq-sidebar {
    position: static;
  }
  .side-panel {
    padding: 14px;
  }
  .side-title {
    margin-bottom: 10px;
  }
  .anchor-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
  }
  .anchor-item a {
    white-space: nowrap;
    padding: 9px 16px;
    font-size: 14px;
  }
  .side-note {
    display: none;
  }
  .path-block {
    grid-template-columns: 1fr;
  }
  .path-visual {
    min-height: 240px;
  }
  .path-visual img {
    min-height: 240px;
  }
  .path-main {
    order: 2;
    padding: 30px 28px;
  }
}
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(6, 10, 19, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0 24px;
    display: flex;
    transition: max-height 0.3s ease, padding 0.3s ease, border-color 0.3s ease;
    box-shadow: 0 24px 44px rgba(0, 0, 0, 0.42);
  }
  .site-header.nav-open .main-nav {
    max-height: 500px;
    padding: 22px 24px;
    border-bottom-color: rgba(0, 229, 255, 0.18);
  }
  .menu-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .menu-item a {
    padding: 13px 14px;
    font-size: 16px;
  }
  .menu-item a::after {
    left: 14px;
    right: auto;
    width: 42px;
  }
  .nav-cta {
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
  }
  .nav-cta .btn {
    width: 100%;
  }
}
@media (max-width: 768px) {
  .page-banner {
    padding: 116px 0 44px;
  }
  .page-banner h1 {
    font-size: 30px;
  }
  .faq-wrap {
    padding-top: 38px;
  }
  .faq-card {
    padding: 22px 20px;
  }
  .faq-q {
    font-size: 16px;
  }
  .faq-a {
    margin-left: 0;
    margin-top: 12px;
    font-size: 15px;
  }
  .more-help {
    margin-left: 0;
  }
  .faq-tail {
    padding: 28px 22px;
  }
  .tail-actions .btn {
    width: 100%;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand-mark {
    width: 30px;
    height: 30px;
  }
  .logo-text {
    font-size: 16px;
  }
  .page-banner h1 {
    font-size: 27px;
  }
  .page-banner p {
    font-size: 15px;
  }
  .faq-section .sec-title {
    font-size: 21px;
  }
  .step-item {
    grid-template-columns: 36px 1fr;
  }
  .step-num {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }
  .faq-tail h3 {
    font-size: 19px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* roulang page: category3 */
:root{
  --bg:#060A13;
  --bg2:#0B1220;
  --surface:#101A2D;
  --glass:rgba(255,255,255,.06);
  --glass-border:rgba(255,255,255,.12);
  --primary:#2F7BFF;
  --cyan:#00E5FF;
  --purple:#8B5CF6;
  --text:#DCE5F0;
  --muted:#8B9BB4;
  --divider:rgba(255,255,255,.08);
  --success:#34D399;
  --danger:#F87171;
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 16px 40px rgba(0,0,0,.35);
  --maxw:1240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 75% 0%,#000 0%,transparent 70%);
  mask-image:radial-gradient(ellipse at 75% 0%,#000 0%,transparent 70%);
  pointer-events:none;
}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
img{max-width:100%;display:block}
.container{
  width:min(var(--maxw),100% - 48px);
  margin-inline:auto;
}
.text-muted{color:var(--muted)}
.grad-text{
  background:linear-gradient(120deg,#fff 10%,#BBD6FF 60%,#7ADFFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(6,10,19,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s,box-shadow .3s;
}
.site-header.scrolled{
  background:rgba(6,10,19,.94);
  border-bottom-color:rgba(0,229,255,.18);
  box-shadow:0 10px 32px rgba(0,0,0,.28);
}
.nav-inner{
  display:flex;
  align-items:center;
  height:72px;
  gap:32px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:rgba(0,229,255,.08);
  border:1px solid rgba(0,229,255,.22);
  box-shadow:0 0 18px rgba(0,229,255,.08);
}
.brand .logo-text{
  font-size:19px;
  color:#EAF1FF;
  letter-spacing:.02em;
  white-space:nowrap;
}
.logo-text b{
  color:#fff;
  font-weight:800;
}
.logo-text{
  font-weight:600;
}
.main-nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex:1;
  min-width:0;
}
.menu-list{
  display:flex;
  align-items:center;
  list-style:none;
  gap:8px;
}
.menu-item a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  color:#AEBBD1;
  font-size:15px;
  font-weight:500;
  border-radius:10px;
  transition:color .25s;
}
.menu-item a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:5px;
  height:2px;
  border-radius:999px;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .25s,transform .25s;
  filter:drop-shadow(0 0 6px rgba(0,229,255,.6));
}
.menu-item a:hover{
  color:#fff;
}
.menu-item a:hover::after,
.menu-item.active a::after{
  opacity:1;
  transform:scaleX(1);
}
.menu-item.active a{
  color:#fff;
  text-shadow:0 0 20px rgba(0,229,255,.35);
}
.nav-cta{
  margin-left:auto;
  padding-left:16px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:inherit;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  border-radius:12px;
  cursor:pointer;
  text-align:center;
  transition:transform .25s,box-shadow .25s,background-color .3s,color .3s;
  font-variant-numeric:tabular-nums;
}
.btn-primary{
  min-height:44px;
  padding:0 20px;
  background:linear-gradient(135deg,#2F7BFF,#00D4FF);
  color:#041019;
  box-shadow:0 0 18px rgba(0,212,255,.32);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 4px 28px rgba(0,229,255,.46);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 12px rgba(0,212,255,.2);
}
.icon-16{
  width:16px;height:16px;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;
  height:42px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:10px;
  cursor:pointer;
  align-items:center;
  padding:9px;
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  background:#EAF0FF;
  border-radius:99px;
  transition:transform .3s,opacity .3s;
}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* Page banner */
.page-banner{
  position:relative;
  padding:104px 0 78px;
  background:
    linear-gradient(180deg,rgba(6,10,19,.72),rgba(6,10,19,.9)),
    url("/assets/images/backpic/back-1.png") center / cover no-repeat;
  border-bottom:1px solid rgba(0,229,255,.12);
  overflow:hidden;
}
.page-banner .orb{
  position:absolute;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,123,255,.3),transparent 70%);
  top:-160px;right:-80px;
  pointer-events:none;
}
.page-banner .container{
  position:relative;
  z-index:2;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
  margin-bottom:20px;
}
.crumbs a{color:#9FB4D0;transition:color .2s}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{opacity:.6}
.page-banner h1{
  font-size:48px;
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
  max-width:840px;
}
.page-lead{
  margin-top:18px;
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:#B6C3D8;
}
/* Intro/lead section */
.lead-section{
  padding:88px 0 24px;
}
.lead-copy{
  position:relative;
  max-width:920px;
}
.lead-copy .tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(0,229,255,.1);
  border:1px solid rgba(0,229,255,.22);
  color:#8EF0FF;
  font-size:13px;
  margin-bottom:20px;
}
.lead-copy h2{
  font-size:34px;
  font-weight:800;
  line-height:1.3;
  margin-bottom:16px;
}
.lead-copy p{
  color:#ADBBD1;
  font-size:16px;
  line-height:1.9;
}
/* Feature section */
.feature-area{
  padding:64px 0 76px;
}
.feature-split{
  display:grid;
  grid-template-columns:1fr 440px;
  gap:48px;
  align-items:start;
}
.col-heading h3{
  font-size:20px;
  font-weight:700;
  margin-bottom:8px;
}
.col-heading p{
  color:var(--muted);
  font-size:14px;
  line-height:1.7;
}
.feature-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:24px;
}
.feature-card{
  min-height:190px;
  padding:24px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);
  border-top:1px solid rgba(255,255,255,.16);
  box-shadow:var(--shadow);
  transition:border-color .25s,background .25s;
}
.feature-card:hover{
  border-color:rgba(0,229,255,.35);
  background:linear-gradient(160deg,rgba(0,229,255,.08),rgba(255,255,255,.03));
}
.f-icon{
  width:40px;height:40px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(47,123,255,.12);
  border:1px solid rgba(47,123,255,.25);
  margin-bottom:16px;
}
.f-icon svg{width:20px;height:20px}
.feature-card h4{
  font-size:17px;
  font-weight:700;
  margin-bottom:8px;
}
.feature-card p{
  color:#94A6C0;
  font-size:14px;
  line-height:1.7;
}
.panel-card{
  position:relative;
  background:
    linear-gradient(180deg,rgba(9,14,27,.7),rgba(9,14,27,.85)),
    url("/assets/images/backpic/back-2.png") center / cover no-repeat;
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.panel-card .panel-img{
  height:180px;
  overflow:hidden;
}
.panel-card .panel-img img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.panel-body{
  padding:26px;
}
.panel-body h3{
  font-size:20px;
  font-weight:800;
  margin-bottom:12px;
  color:#fff;
}
.panel-body ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.panel-body ul li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:#B9C5DA;
  line-height:1.7;
}
.panel-body ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--cyan),var(--purple));
  box-shadow:0 0 8px rgba(0,229,255,.6);
}
/* Steps */
.steps-section{
  padding:58px 0 82px;
  border-top:1px solid var(--divider);
  background:rgba(11,18,32,.5);
}
.steps-head{
  max-width:720px;
  margin-bottom:44px;
}
.steps-head h2{
  font-size:32px;
  line-height:1.3;
  font-weight:800;
  margin-bottom:10px;
}
.steps-head p{
  color:var(--muted);
  font-size:16px;
}
.step-chain{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.step-item{
  position:relative;
  padding:24px;
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);
  border-top:1px solid rgba(255,255,255,.18);
  transition:border-color .25s,transform .25s;
}
.step-item:nth-child(2){transform:translateY(20px)}
.step-item:nth-child(4){transform:translateY(6px)}
.step-item:hover{
  transform:translateY(-4px);
  border-color:rgba(0,229,255,.3);
}
.step-item:nth-child(2):hover{transform:translateY(14px)}
.step-num{
  font-size:30px;
  line-height:1;
  font-weight:800;
  color:transparent;
  background:linear-gradient(135deg,#2F7BFF,#00E5FF);
  -webkit-background-clip:text;
  background-clip:text;
  opacity:.9;
  margin-bottom:16px;
}
.step-item h4{
  font-size:17px;
  font-weight:700;
  margin-bottom:8px;
}
.step-item p{
  color:#93A4BE;
  font-size:14px;
  line-height:1.7;
}
/* Form section */
.apply-section{
  padding:96px 0 90px;
  background:
    linear-gradient(180deg,rgba(6,10,19,.82),rgba(8,13,25,.94)),
    url("/assets/images/backpic/back-3.png") center / cover no-repeat;
  border-top:1px solid transparent;
}
.form-container{
  max-width:780px;
}
.form-card{
  background:rgba(255,255,255,.07);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.14);
  border-top:1px solid rgba(255,255,255,.28);
  border-radius:24px;
  padding:40px;
  box-shadow:var(--shadow);
  background-image:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
}
.form-card h2{
  font-size:30px;
  font-weight:800;
  margin-bottom:8px;
}
.form-card>p{
  font-size:15px;
  color:#A8B7CC;
  margin-bottom:30px;
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px 18px;
}
.form-field{
  display:flex;
  flex-direction:column;
  gap:7px;
}
.form-field.full{
  grid-column:1/-1;
}
.form-field label{
  font-size:14px;
  font-weight:600;
  color:#DBE5F2;
}
.form-field input,.form-field select,.form-field textarea{
  width:100%;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  border-radius:12px;
  color:var(--text);
  padding:11px 14px;
  font-size:15px;
  font-family:inherit;
  transition:border-color .25s,box-shadow .25s,background .25s;
}
.form-field textarea{
  min-height:116px;
  resize:vertical;
}
.form-field select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23AEBBD1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:38px;
  cursor:pointer;
}
.form-field input::placeholder,.form-field textarea::placeholder{
  color:#667B97;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;
  border-color:rgba(0,229,255,.65);
  box-shadow:0 0 0 3px rgba(0,229,255,.12),0 0 16px rgba(0,229,255,.08);
  background:rgba(255,255,255,.08);
}
.submit-row{
  margin-top:24px;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.btn-submit{
  min-width:240px;
  min-height:48px;
  background:linear-gradient(135deg,#2F7BFF,#00D4FF);
  color:#041019;
  font-weight:700;
  box-shadow:0 0 24px rgba(0,212,255,.28);
  transition:transform .25s,box-shadow .25s;
}
.btn-submit:hover{
  box-shadow:0 6px 32px rgba(0,229,255,.45);
  transform:translateY(-2px);
}
.btn-submit:disabled{
  opacity:.76;
  cursor:not-allowed;
  transform:none;
}
.loading-dot{}
.form-status{
  font-size:14px;
  color:var(--success);
  margin-left:2px;
  min-height:20px;
}
.form-hint{
  margin-top:18px;
  font-size:13px;
  color:#8B9BB4;
  line-height:1.7;
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:18px;
}
/* small nav under form */
.mini-back{
  margin-top:46px;
  text-align:center;
}
.mini-back a{
  color:#8EF0FF;
  font-size:15px;
  transition:color .2s;
}
.mini-back a:hover{
  color:#fff;
  text-shadow:0 0 30px rgba(0,229,255,.5);
}
/* Footer */
.site-footer{
  background:#04070E;
  border-top:1px solid rgba(0,229,255,.14);
  padding:64px 0 26px;
}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  margin-bottom:44px;
}
.footer-brand .brand{
  margin-bottom:14px;
}
.footer-brand p{
  color:#8697B3;
  font-size:14px;
  line-height:1.8;
  max-width:320px;
}
.footer-col h4{
  font-size:15px;
  color:#EAF0FF;
  font-weight:700;
  margin-bottom:16px;
}
.footer-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  display:inline-block;
  position:relative;
  color:#8B9BB4;
  font-size:14px;
  transition:color .2s;
}
.footer-links a::after{
  content:"";
  display:block;
  height:1px;
  margin-top:3px;
  background:linear-gradient(90deg,var(--cyan),transparent);
  width:0;
  transition:width .25s;
}
.footer-links a:hover{
  color:#fff;
}
.footer-links a:hover::after{
  width:100%;
}
.footer-info p{
  color:#8B9BB4;
  font-size:14px;
  line-height:1.8;
}
.footer-bottom{
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.07);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.footer-bottom span{
  color:#75849C;
  font-size:13px;
}
.footer-bottom .domain{
  font-variant-numeric:tabular-nums;
  opacity:.88;
}
/* Responsive */
@media(max-width:1100px){
  .feature-split{
    grid-template-columns:1fr;
  }
  .panel-card{
    width:min(640px,100%);
    margin-inline:auto;
  }
  .step-chain{
    grid-template-columns:repeat(2,1fr);
    gap:24px 18px;
  }
  .step-item:nth-child(2){transform:none}
  .step-item:nth-child(4){transform:none}
  .step-item:hover,.step-item:nth-child(2):hover{transform:translateY(-4px)}
}
@media(max-width:920px){
  .nav-toggle{
    display:flex;
  }
  .nav-inner{
    flex-wrap:wrap;
    height:auto;
    min-height:72px;
  }
  .brand{
    height:72px;
  }
  .nav-toggle{
    margin-left:auto;
  }
  .main-nav{
    flex-basis:100%;
    display:none;
    flex-direction:column;
    gap:12px;
    padding:14px 0 22px;
  }
  .nav-open .main-nav{
    display:flex;
  }
  .menu-list{
    flex-direction:column;
    align-items:stretch;
  }
  .menu-item a{
    display:block;
    border-radius:10px;
    border:1px solid transparent;
    background:rgba(255,255,255,.03);
  }
  .menu-item a:hover,.menu-item.active a{
    background:rgba(0,229,255,.07);
    border-color:rgba(0,229,255,.16);
  }
  .menu-item a::after{
    display:none;
  }
  .nav-cta{
    margin-left:0;
    padding-left:0;
  }
  .nav-cta .btn{
    width:100%;
  }
}
@media(max-width:760px){
  .footer-top{
    grid-template-columns:1fr;
    gap:30px;
  }
  .footer-brand p{
    max-width:none;
  }
  .feature-grid{
    grid-template-columns:1fr;
  }
  .step-chain{
    grid-template-columns:1fr;
  }
  .form-card{
    padding:26px 20px;
  }
  .form-grid{
    grid-template-columns:1fr;
  }
  .page-banner{
    padding:72px 0 56px;
  }
  .page-banner h1{
    font-size:32px;
  }
  .lead-section{
    padding:58px 0 10px;
  }
  .lead-copy h2{
    font-size:26px;
  }
  .feature-area{
    padding:45px 0 56px;
  }
  .steps-section{
    padding:46px 0 58px;
  }
  .steps-head h2{
    font-size:26px;
  }
  .apply-section{
    padding:60px 0 56px;
  }
}
@media(max-width:480px){
  .container{
    width:calc(100% - 32px);
  }
  .page-banner h1{
    font-size:28px;
  }
  .form-card{
    padding:22px 18px;
  }
  .submit-row{
    align-items:stretch;
    flex-direction:column;
  }
  .btn-submit{
    width:100%;
  }
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto}
}