/* roulang page: index */
:root{
  --bg:#070b16;
  --bg-soft:#0b1120;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.08);
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(120,180,255,.34);
  --text:#e9eefb;
  --muted:#94a4c4;
  --brand:#3b82f6;
  --brand-2:#22d3ee;
  --violet:#8b5cf6;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 50px rgba(3,8,24,.55);
  --glow:0 0 0 1px rgba(59,130,246,.30), 0 16px 44px rgba(34,211,238,.16);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(59,130,246,.20), transparent 65%),
    radial-gradient(820px 480px at 92% 2%, rgba(139,92,246,.14), transparent 68%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.32;font-weight:700;color:var(--text);letter-spacing:.2px;}
p{margin:0 0 1em;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}
.site-container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:76px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,.022),rgba(255,255,255,0));border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05);}
.section-head{max-width:820px;margin-bottom:34px;min-width:0;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:#8fd8ff;background:rgba(34,211,238,.09);
  border:1px solid rgba(34,211,238,.28);
  padding:5px 13px;border-radius:999px;margin-bottom:16px;font-weight:600;
}
.eyebrow i{font-size:11px;}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:15.5px;margin:0;}
.lead{color:var(--muted);}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(59,130,246,.75),rgba(34,211,238,.75),transparent);
  opacity:.85;
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;min-width:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:grid;place-items:center;
  font-size:18px;font-weight:800;color:#04121f;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 26px rgba(34,211,238,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.brand-text span{color:#7fd6ff;font-weight:600;font-size:13px;margin-left:5px;}
.site-nav{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;min-width:0;}
.site-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  color:#a9b8d6;font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:color .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-nav a:hover{color:#ffffff;background:rgba(255,255,255,.06);}
.site-nav a.active{color:#eaf6ff;background:rgba(59,130,246,.16);box-shadow:inset 0 0 0 1px rgba(93,180,255,.35),0 8px 22px rgba(34,211,238,.16);}
.site-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#3b82f6,#22d3ee);
  box-shadow:0 0 10px rgba(34,211,238,.8);
}
.nav-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;font-size:14px;font-weight:700;color:#04121f;
  background:linear-gradient(120deg,#3b82f6,#22d3ee);
  box-shadow:0 10px 28px rgba(34,211,238,.28);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(34,211,238,.42);filter:brightness(1.06);}
.nav-cta:active{transform:translateY(0);}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{
  color:#04121f;background:linear-gradient(120deg,#3b82f6,#22d3ee);
  box-shadow:0 14px 34px rgba(34,211,238,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(34,211,238,.4);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:#cfe3ff;background:rgba(255,255,255,.04);
  border-color:rgba(140,170,255,.28);
}
.btn-ghost:hover{background:rgba(59,130,246,.16);border-color:rgba(120,180,255,.55);color:#ffffff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}

/* hero */
.hero{padding:64px 0 58px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:-30% 40% 40% -20%;
  background:radial-gradient(closest-side,rgba(59,130,246,.22),transparent 72%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;gap:26px;}
.hero h1{font-size:40px;line-height:1.28;margin-bottom:18px;max-width:960px;}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,#66c7ff,#22d3ee 55%,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-desc{max-width:850px;color:#aebdd9;font-size:16px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.metric-card{
  min-width:0;padding:20px 18px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong);box-shadow:var(--glow);}
.metric-value{
  display:block;font-size:30px;font-weight:800;line-height:1.1;
  background:linear-gradient(120deg,#7dd3fc,#22d3ee);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-label{display:block;margin-top:6px;font-size:14px;font-weight:600;color:#dce7ff;}
.metric-card p{margin:8px 0 0;font-size:13px;color:#8fa1c2;line-height:1.7;}

/* download */
.dl-card{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:30px;align-items:center;
  padding:34px;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(59,130,246,.16),rgba(139,92,246,.10) 55%,rgba(34,211,238,.10));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);min-width:0;
}
.dl-card h2{font-size:26px;margin-bottom:12px;}
.dl-card p{color:#b9c9e6;font-size:15px;margin:0;}
.dl-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;min-width:0;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  padding:18px 10px;border-radius:var(--radius);text-align:center;min-width:0;
  background:rgba(9,15,30,.72);border:1px solid rgba(140,170,255,.24);
  color:#dfeaff;font-size:14px;font-weight:600;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.dl-btn i{font-size:22px;color:#7dd3fc;}
.dl-btn small{font-size:12px;color:#8ea2c4;font-weight:500;}
.dl-btn:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.65);background:rgba(34,211,238,.12);box-shadow:0 16px 34px rgba(34,211,238,.24);}
.dl-btn:active{transform:translateY(0);}
.dl-note{margin-top:14px;font-size:12.5px;color:#8193b4;}

/* generic grids */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.site-card{
  min-width:0;padding:24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.site-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong);box-shadow:var(--glow);}
.site-card h3{font-size:17.5px;margin-bottom:8px;}
.site-card p{font-size:14px;color:#9db0cf;margin:0;line-height:1.75;}
.card-tag{
  display:inline-block;margin-bottom:12px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:#9fe4ff;
  background:rgba(34,211,238,.10);border:1px solid rgba(34,211,238,.26);
}
.card-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;
  background:linear-gradient(135deg,rgba(59,130,246,.28),rgba(34,211,238,.18));
  border:1px solid rgba(120,180,255,.3);color:#9fe4ff;font-size:17px;
}

/* compare table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:rgba(255,255,255,.025);}
.cmp-table{width:100%;border-collapse:collapse;min-width:660px;font-size:14px;}
.cmp-table th,.cmp-table td{padding:15px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.07);vertical-align:top;}
.cmp-table thead th{background:rgba(59,130,246,.14);color:#dbe9ff;font-weight:700;font-size:14px;}
.cmp-table tbody th{color:#c9d8f2;font-weight:600;background:rgba(255,255,255,.03);white-space:nowrap;}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table td{color:#9db0cf;}

/* steps */
.step-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.step-item{
  position:relative;min-width:0;padding:24px 20px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.step-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--glow);}
.step-num{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;
  font-weight:800;font-size:15px;color:#04121f;margin-bottom:14px;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
}
.step-item h3{font-size:16.5px;margin-bottom:8px;}
.step-item p{font-size:13.5px;color:#9db0cf;margin:0;}

/* timeline */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:19px;height:2px;
  background:linear-gradient(90deg,rgba(59,130,246,.7),rgba(34,211,238,.6),rgba(139,92,246,.55));
  opacity:.55;
}
.tl-item{position:relative;min-width:0;padding-top:46px;}
.tl-dot{
  position:absolute;top:10px;left:0;width:20px;height:20px;border-radius:50%;
  background:radial-gradient(circle,#8ff0ff 0 35%,#22d3ee 36% 60%,rgba(7,11,22,.9) 61%);
  box-shadow:0 0 16px rgba(34,211,238,.75);
}
.tl-item h3{font-size:16.5px;margin-bottom:8px;}
.tl-item p{font-size:13.5px;color:#9db0cf;margin:0;}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.news-card{
  display:flex;flex-direction:column;min-width:0;padding:22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong);box-shadow:var(--glow);}
.news-card h3{font-size:16.5px;margin:10px 0 10px;line-height:1.5;}
.news-card p{font-size:13.5px;color:#9db0cf;margin:0 0 16px;flex:1 1 auto;}
.news-time{font-size:12.5px;color:#7f92b3;letter-spacing:.02em;}
.news-tag{
  align-self:flex-start;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;
  color:#a9e8ff;background:rgba(59,130,246,.16);border:1px solid rgba(93,180,255,.3);
}
.empty-tip{padding:26px;border-radius:var(--radius);border:1px dashed rgba(140,170,255,.3);color:#8ea2c4;text-align:center;font-size:14.5px;}

/* faq */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);
  overflow:hidden;transition:border-color .22s ease,background .22s ease;
}
.faq-item:hover{border-color:var(--line-strong);background:var(--panel-strong);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-size:15.5px;font-weight:600;color:#e3ecff;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:20px;line-height:1;color:#7dd3fc;font-weight:400;flex:0 0 auto;
  transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 22px 20px;color:#9db0cf;font-size:14.5px;}

/* cta */
.cta-band{
  padding:42px 36px;border-radius:var(--radius-lg);text-align:center;
  background:linear-gradient(135deg,rgba(59,130,246,.20),rgba(34,211,238,.10) 55%,rgba(139,92,246,.16));
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
}
.cta-band h2{font-size:27px;margin-bottom:12px;}
.cta-band p{color:#b9c9e6;max-width:760px;margin:0 auto 24px;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* note */
.note-box{
  padding:24px 26px;border-radius:var(--radius);
  border:1px solid rgba(255,180,90,.28);background:rgba(255,180,90,.07);
  color:#e7cdae;font-size:14px;
}
.note-box strong{color:#ffd7a1;}

/* footer */
.site-footer{
  padding:56px 0 28px;border-top:1px solid rgba(255,255,255,.08);
  background:linear-gradient(180deg,rgba(11,17,32,.4),rgba(6,9,18,.95));
}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr);gap:32px;margin-bottom:34px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:16px;border-radius:10px;}
.footer-title{font-size:16px;font-weight:700;margin-bottom:6px;color:#e6efff;}
.footer-col h3{font-size:14px;color:#cfdcf5;margin-bottom:14px;letter-spacing:.03em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:#93a4c4;font-size:14px;transition:color .2s ease,padding-left .2s ease;}
.footer-col ul li a:hover{color:#7dd3fc;padding-left:4px;}
.footer-desc{color:#8fa1c2;font-size:13.5px;max-width:420px;margin:0;}
.footer-bottom{
  padding-top:20px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  color:#7e90b1;font-size:13px;
}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;}
.friend-links a{color:#93a4c4;font-size:13.5px;transition:color .2s ease;}
.friend-links a:hover{color:#7dd3fc;}

@media (max-width:1024px){
  .hero h1{font-size:33px;}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));}
  .timeline::before{display:none;}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .dl-card{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .hero{padding:44px 0 42px;}
  .hero h1{font-size:27px;}
  .hero-desc{font-size:15px;}
  .section-head h2{font-size:24px;}
  .header-inner{flex-wrap:wrap;gap:12px;padding-top:10px;padding-bottom:10px;min-height:0;}
  .site-nav{order:3;width:100%;margin-left:0;overflow-x:auto;padding-bottom:2px;-webkit-overflow-scrolling:touch;}
  .site-nav::-webkit-scrollbar{display:none;}
  .site-nav a{padding:8px 12px;font-size:14px;}
  .nav-cta{margin-left:auto;padding:9px 16px;font-size:13.5px;}
  .dl-card{padding:24px;}
  .dl-buttons{grid-template-columns:repeat(3,minmax(0,1fr));}
  .cta-band{padding:32px 22px;}
  .cta-band h2{font-size:22px;}
}
@media (max-width:520px){
  .hero h1{font-size:23px;}
  .metric-grid,.grid-2,.grid-3,.grid-4,.news-grid,.step-list,.timeline{grid-template-columns:minmax(0,1fr);}
  .dl-buttons{grid-template-columns:minmax(0,1fr);}
  .dl-btn{flex-direction:row;justify-content:flex-start;gap:12px;padding:15px 18px;text-align:left;}
  .dl-btn small{display:none;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand-text{font-size:15.5px;}
  .site-card,.step-item,.news-card{padding:20px;}
  .cta-actions .btn,.hero-actions .btn{width:100%;}
}

/* roulang page: article */
:root{
  --bg:#070b16;
  --bg-soft:#0b1120;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.08);
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(120,180,255,.34);
  --text:#e9eefb;
  --muted:#94a4c4;
  --brand:#3b82f6;
  --brand-2:#22d3ee;
  --violet:#8b5cf6;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 50px rgba(3,8,24,.55);
  --glow:0 0 0 1px rgba(59,130,246,.30), 0 16px 44px rgba(34,211,238,.16);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(59,130,246,.20), transparent 65%),
    radial-gradient(820px 480px at 92% 2%, rgba(139,92,246,.14), transparent 68%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}
.site-container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:76px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,.022),rgba(255,255,255,0));border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05);}
.section-head{max-width:820px;margin-bottom:34px;min-width:0;}
.section-head h2{font-size:28px;margin:0 0 14px;line-height:1.4;}
.section-head p{color:var(--muted);font-size:15.5px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:#8fd8ff;background:rgba(34,211,238,.09);
  border:1px solid rgba(34,211,238,.28);
  padding:5px 13px;border-radius:999px;margin-bottom:16px;font-weight:600;
}
.eyebrow i{font-size:11px;}
/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(59,130,246,.75),rgba(34,211,238,.75),transparent);
  opacity:.85;
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;min-width:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:grid;place-items:center;
  font-size:18px;font-weight:800;color:#04121f;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 26px rgba(34,211,238,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.brand-text span{color:#7fd6ff;font-weight:600;font-size:13px;margin-left:5px;}
.site-nav{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;min-width:0;}
.site-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  color:#a9b8d6;font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:color .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-nav a:hover{color:#ffffff;background:rgba(255,255,255,.06);}
.site-nav a.active{color:#eaf6ff;background:rgba(59,130,246,.16);box-shadow:inset 0 0 0 1px rgba(93,180,255,.35),0 8px 22px rgba(34,211,238,.16);}
.site-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#3b82f6,#22d3ee);
  box-shadow:0 0 10px rgba(34,211,238,.8);
}
.nav-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;font-size:14px;font-weight:700;color:#04121f;
  background:linear-gradient(120deg,#3b82f6,#22d3ee);
  box-shadow:0 10px 28px rgba(34,211,238,.28);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(34,211,238,.42);filter:brightness(1.06);}
.nav-cta:active{transform:translateY(0);}
/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{color:#04121f;background:linear-gradient(120deg,#3b82f6,#22d3ee);box-shadow:0 14px 34px rgba(34,211,238,.26);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(34,211,238,.4);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{color:#cfe3ff;background:rgba(255,255,255,.04);border-color:rgba(140,170,255,.28);}
.btn-ghost:hover{background:rgba(59,130,246,.16);border-color:rgba(120,180,255,.55);color:#ffffff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
/* article head */
.article-head{padding:44px 0 34px;position:relative;overflow:hidden;}
.article-head::before{
  content:"";position:absolute;inset:-40% 45% 30% -25%;
  background:radial-gradient(closest-side,rgba(59,130,246,.20),transparent 72%);
  pointer-events:none;
}
.article-head-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px;align-items:start;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#8ba0c4;margin-bottom:18px;}
.breadcrumb a{color:#a9c6ff;transition:color .2s ease;}
.breadcrumb a:hover{color:#ffffff;}
.breadcrumb i{font-size:10px;opacity:.6;}
.post-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:#8fd8ff;background:rgba(34,211,238,.09);
  border:1px solid rgba(34,211,238,.28);margin-bottom:16px;
}
.article-head h1{font-size:clamp(26px,3.4vw,37px);line-height:1.36;margin:0 0 18px;letter-spacing:.2px;}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:#8ba0c4;margin-bottom:20px;}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-lead{color:#aebdd9;font-size:16px;margin:0;max-width:760px;}
.head-aside{
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(59,130,246,.14),rgba(139,92,246,.08) 55%,rgba(255,255,255,.03));
  box-shadow:var(--shadow);padding:24px 22px;backdrop-filter:blur(12px);min-width:0;
}
.head-aside h2{font-size:15px;margin:0 0 16px;color:#cfe3ff;letter-spacing:.5px;}
.aside-row{display:flex;align-items:flex-start;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(140,170,255,.16);min-width:0;}
.aside-row:last-of-type{border-bottom:0;}
.aside-row i{color:var(--brand-2);font-size:14px;margin-top:4px;flex:0 0 auto;}
.aside-row div{min-width:0;}
.aside-row strong{display:block;font-size:14px;color:#e9eefb;font-weight:600;}
.aside-row span{font-size:12.8px;color:#8ba0c4;line-height:1.7;}
/* tldr */
.tldr-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.tldr-card{
  min-width:0;padding:22px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.tldr-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong);box-shadow:var(--glow);}
.tldr-card i{font-size:17px;color:var(--brand-2);margin-bottom:12px;display:inline-block;}
.tldr-card h3{font-size:16px;margin:0 0 8px;}
.tldr-card p{margin:0;font-size:14px;color:#94a4c4;}
/* post body */
.article-body-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start;}
.post-card{
  min-width:0;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:rgba(255,255,255,.028);box-shadow:var(--shadow);
  padding:34px 34px 30px;
}
.post-body{min-width:0;font-size:16px;color:#c8d5ec;}
.post-body > *:first-child{margin-top:0;}
.post-body h1,.post-body h2,.post-body h3,.post-body h4{color:#eff5ff;line-height:1.45;margin:34px 0 14px;font-weight:700;}
.post-body h1{font-size:24px;}
.post-body h2{font-size:22px;padding-left:13px;border-left:3px solid var(--brand-2);}
.post-body h3{font-size:18px;}
.post-body p{margin:0 0 16px;}
.post-body ul,.post-body ol{margin:0 0 18px;padding-left:22px;}
.post-body li{margin-bottom:9px;}
.post-body a{color:#7fd6ff;border-bottom:1px solid rgba(127,214,255,.35);transition:color .2s ease,border-color .2s ease;}
.post-body a:hover{color:#ffffff;border-color:#ffffff;}
.post-body blockquote{
  margin:22px 0;padding:16px 20px;border-radius:var(--radius-sm);
  background:rgba(59,130,246,.10);border-left:3px solid var(--brand);
  color:#bcd0ee;
}
.post-body img{border-radius:var(--radius-sm);margin:20px 0;}
.post-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;}
.post-body th,.post-body td{border:1px solid rgba(140,170,255,.20);padding:10px 12px;text-align:left;}
.post-body th{background:rgba(59,130,246,.12);color:#dbe9ff;}
.post-body code{background:rgba(255,255,255,.07);padding:2px 6px;border-radius:5px;font-size:14px;}
.notice-empty{
  padding:26px;border-radius:var(--radius);border:1px dashed rgba(140,170,255,.34);
  background:rgba(255,255,255,.03);text-align:center;color:#a9b8d6;
}
.notice-empty a{color:#7fd6ff;}
/* in-article cta */
.inline-cta{
  margin:28px 0 6px;padding:22px 24px;border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(59,130,246,.20),rgba(34,211,238,.10));
  border:1px solid var(--line-strong);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.inline-cta p{margin:0;font-size:15px;color:#d8e6ff;max-width:520px;}
.side-box{
  border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);padding:20px 18px;margin-bottom:18px;min-width:0;
}
.side-box:last-child{margin-bottom:0;}
.side-box h2,.side-box h3{font-size:14.5px;margin:0 0 12px;color:#cfe3ff;letter-spacing:.4px;}
.side-box ul{margin:0;padding-left:18px;font-size:13.6px;color:#94a4c4;}
.side-box li{margin-bottom:8px;}
.side-box p{margin:0;font-size:13.6px;color:#94a4c4;}
.side-box .btn{width:100%;padding:11px 16px;font-size:14px;}
/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.check-card{
  min-width:0;padding:22px 20px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease,background .24s ease;
}
.check-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--glow);background:var(--panel-strong);}
.check-no{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;
  font-size:13px;font-weight:800;color:#04121f;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);margin-bottom:12px;
}
.check-card h3{font-size:16px;margin:0 0 8px;}
.check-card p{margin:0;font-size:14px;color:#94a4c4;}
/* risk */
.risk-list{display:grid;gap:14px;}
.risk-item{
  display:flex;gap:16px;min-width:0;padding:20px 22px;border-radius:var(--radius);
  border:1px solid rgba(139,92,246,.24);
  background:linear-gradient(120deg,rgba(139,92,246,.12),rgba(255,255,255,.02));
}
.risk-item i{color:#b79bff;font-size:18px;margin-top:3px;flex:0 0 auto;}
.risk-item div{min-width:0;}
.risk-item h3{font-size:16px;margin:0 0 6px;}
.risk-item p{margin:0;font-size:14.4px;color:#a9b8d6;}
/* download */
.dl-card{
  border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  background:linear-gradient(150deg,rgba(59,130,246,.18),rgba(11,17,32,.6) 55%,rgba(139,92,246,.14));
  box-shadow:var(--glow);padding:38px 34px;min-width:0;
}
.dl-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:30px;align-items:center;}
.dl-inner h2{font-size:26px;margin:0 0 14px;line-height:1.4;}
.dl-inner p{color:#a9b8d6;font-size:15px;margin:0;}
.dl-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;
  padding:18px 10px;border-radius:var(--radius);min-width:0;
  border:1px solid rgba(140,170,255,.26);background:rgba(7,11,22,.55);
  color:#dbe9ff;font-size:13.6px;font-weight:600;
  transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
}
.dl-btn i{font-size:20px;color:var(--brand-2);}
.dl-btn:hover{transform:translateY(-3px);border-color:rgba(120,180,255,.6);background:rgba(59,130,246,.18);box-shadow:0 14px 32px rgba(34,211,238,.2);}
.dl-btn:active{transform:translateY(0);}
.dl-note{margin-top:16px;font-size:12.8px;color:#8496b8;}
/* faq */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);
  padding:0 20px;transition:border-color .22s ease,background .22s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:var(--panel-strong);}
.faq-item summary{
  cursor:pointer;list-style:none;padding:17px 0;
  font-size:15.5px;font-weight:600;color:#e4edff;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:11px;color:#7fd6ff;transition:transform .22s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item p{margin:0 0 18px;color:#a9b8d6;font-size:14.6px;}
/* cta band */
.cta-band{
  border-radius:var(--radius-lg);border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(59,130,246,.22),rgba(34,211,238,.10) 60%,rgba(139,92,246,.16));
  padding:34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.cta-band h2{font-size:22px;margin:0 0 8px;}
.cta-band p{margin:0;font-size:14.6px;color:#a9b8d6;max-width:620px;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;}
/* link grid */
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.link-card{
  display:flex;align-items:center;gap:13px;min-width:0;
  padding:18px 20px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.link-card:hover{transform:translateY(-3px);border-color:var(--line-strong);background:var(--panel-strong);}
.link-card i{color:var(--brand-2);font-size:16px;flex:0 0 auto;}
.link-card span{font-size:14.6px;font-weight:600;color:#e2ecff;min-width:0;}
/* footer */
.site-footer{border-top:1px solid rgba(255,255,255,.07);background:rgba(5,9,18,.72);padding:54px 0 26px;margin-top:10px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px;margin-bottom:34px;}
.footer-col{min-width:0;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;}
.footer-title{font-size:16px;font-weight:700;color:#eaf2ff;}
.footer-desc{font-size:13.8px;color:#8595b5;margin:0;max-width:520px;}
.footer-col h3{font-size:14px;margin:0 0 14px;color:#cfe3ff;letter-spacing:.5px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:9px;}
.footer-col a{font-size:13.8px;color:#94a4c4;transition:color .2s ease;}
.footer-col a:hover{color:#7fd6ff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);padding-top:20px;margin-top:6px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#7f8fae;
}
.footer-bottom h3{font-size:13.5px;margin:0 0 10px;color:#cfe3ff;}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 16px;}
.friend-links a{font-size:13.2px;color:#94a4c4;transition:color .2s ease;}
.friend-links a:hover{color:#7fd6ff;}
@media (max-width:1024px){
  .site-nav{overflow-x:auto;scrollbar-width:none;margin-left:0;}
  .site-nav::-webkit-scrollbar{display:none;}
  .article-head-inner{grid-template-columns:minmax(0,1fr);}
  .article-body-wrap{grid-template-columns:minmax(0,1fr);}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .link-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-inner{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .section{padding:60px 0;}
}
@media (max-width:768px){
  .header-inner{flex-wrap:wrap;gap:10px;padding:12px 0;min-height:auto;}
  .site-nav{order:3;width:100%;flex:0 0 100%;}
  .nav-cta{margin-left:auto;}
  .tldr-grid{grid-template-columns:minmax(0,1fr);}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .link-grid{grid-template-columns:minmax(0,1fr);}
  .post-card{padding:24px 20px;}
  .dl-card{padding:26px 22px;}
  .cta-band{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .article-head h1{font-size:26px;}
  .section-head h2{font-size:23px;}
}
@media (max-width:520px){
  .site-container{padding:0 15px;}
  .brand-text{font-size:15.5px;}
  .brand-text span{display:none;}
  .nav-cta{padding:9px 14px;font-size:13px;}
  .dl-actions{grid-template-columns:minmax(0,1fr);}
  .dl-btn{flex-direction:row;justify-content:flex-start;gap:12px;padding:15px 16px;}
  .hero-actions .btn,.inline-cta .btn,.cta-band .btn{width:100%;}
  .article-meta{gap:8px 16px;font-size:12.8px;}
  .risk-item{padding:18px 16px;}
}

/* roulang page: category1 */
:root{
  --bg:#070b16;
  --bg-soft:#0b1120;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.08);
  --line:rgba(140,170,255,.14);
  --line-strong:rgba(120,180,255,.34);
  --text:#e9eefb;
  --muted:#94a4c4;
  --brand:#3b82f6;
  --brand-2:#22d3ee;
  --violet:#8b5cf6;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 50px rgba(3,8,24,.55);
  --glow:0 0 0 1px rgba(59,130,246,.30), 0 16px 44px rgba(34,211,238,.16);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(59,130,246,.20), transparent 65%),
    radial-gradient(820px 480px at 92% 2%, rgba(139,92,246,.14), transparent 68%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:6px;}
.site-container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:76px 0;position:relative;}
.section-alt{
  background:linear-gradient(180deg,rgba(255,255,255,.022),rgba(255,255,255,0));
  border-top:1px solid rgba(255,255,255,.05);
  border-bottom:1px solid rgba(255,255,255,.05);
}
.section-head{max-width:820px;margin-bottom:34px;min-width:0;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:#8fd8ff;background:rgba(34,211,238,.09);
  border:1px solid rgba(34,211,238,.28);
  padding:5px 13px;border-radius:999px;margin-bottom:16px;font-weight:600;
}
.eyebrow i{font-size:11px;}
h2{font-size:30px;line-height:1.4;font-weight:700;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:15.5px;}
.lead{color:var(--muted);}
/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(59,130,246,.75),rgba(34,211,238,.75),transparent);
  opacity:.85;
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;min-width:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:grid;place-items:center;
  font-size:18px;font-weight:800;color:#04121f;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
  box-shadow:0 0 0 1px rgba(34,211,238,.35),0 10px 26px rgba(34,211,238,.28);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.brand-text span{color:#7fd6ff;font-weight:600;font-size:13px;margin-left:5px;}
.site-nav{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;min-width:0;}
.site-nav a{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  color:#a9b8d6;font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:color .22s ease,background .22s ease,box-shadow .22s ease;
}
.site-nav a:hover{color:#ffffff;background:rgba(255,255,255,.06);}
.site-nav a.active{color:#eaf6ff;background:rgba(59,130,246,.16);box-shadow:inset 0 0 0 1px rgba(93,180,255,.35),0 8px 22px rgba(34,211,238,.16);}
.site-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#3b82f6,#22d3ee);
  box-shadow:0 0 10px rgba(34,211,238,.8);
}
.nav-cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;font-size:14px;font-weight:700;color:#04121f;
  background:linear-gradient(120deg,#3b82f6,#22d3ee);
  box-shadow:0 10px 28px rgba(34,211,238,.28);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(34,211,238,.42);filter:brightness(1.06);}
.nav-cta:active{transform:translateY(0);}
/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{
  color:#04121f;background:linear-gradient(120deg,#3b82f6,#22d3ee);
  box-shadow:0 14px 34px rgba(34,211,238,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px rgba(34,211,238,.4);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  color:#cfe3ff;background:rgba(255,255,255,.04);
  border-color:rgba(140,170,255,.28);
}
.btn-ghost:hover{background:rgba(59,130,246,.16);border-color:rgba(120,180,255,.55);color:#ffffff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
/* hero */
.cat-hero{padding:56px 0 52px;position:relative;overflow:hidden;}
.cat-hero::before{
  content:"";position:absolute;inset:-30% 40% 30% -22%;
  background:radial-gradient(closest-side,rgba(59,130,246,.22),transparent 72%);
  pointer-events:none;
}
.cat-hero-inner{position:relative;display:grid;gap:22px;}
.cat-hero h1{font-size:36px;line-height:1.34;font-weight:800;max-width:920px;}
.cat-hero h1 em{font-style:normal;background:linear-gradient(120deg,#66c7ff,#22d3ee 55%,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent;}
.cat-hero-desc{max-width:880px;color:#aebdd9;font-size:16px;}
.check-strip{display:flex;flex-wrap:wrap;gap:10px;}
.check-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;font-size:13.5px;color:#c9dcff;
  background:rgba(59,130,246,.10);border:1px solid rgba(120,180,255,.24);
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.check-chip:hover{background:rgba(59,130,246,.20);border-color:rgba(120,180,255,.5);transform:translateY(-2px);}
.check-chip i{color:#38e0c8;font-size:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
/* metric */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.metric-card{
  min-width:0;padding:22px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.metric-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong);box-shadow:var(--glow);}
.metric-num{
  font-size:30px;font-weight:800;line-height:1.2;
  background:linear-gradient(120deg,#7dd3fc,#22d3ee);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-num small{font-size:14px;font-weight:600;margin-left:4px;color:#9ddaff;-webkit-text-fill-color:#9ddaff;}
.metric-title{font-size:15px;font-weight:700;margin-top:6px;color:#e2ecff;}
.metric-card p{margin:8px 0 0;font-size:13px;color:#8fa1c2;line-height:1.7;}
/* matrix */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.matrix-card{
  min-width:0;padding:24px 22px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.matrix-card:hover{transform:translateY(-5px);border-color:var(--line-strong);box-shadow:var(--glow);}
.matrix-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  color:#0b1a2b;font-size:17px;margin-bottom:14px;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
  box-shadow:0 10px 24px rgba(34,211,238,.24);
}
.matrix-card h3{font-size:17px;font-weight:700;margin-bottom:9px;color:#eaf3ff;}
.matrix-card p{font-size:14px;color:#9db0cf;line-height:1.82;}
/* compare */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.compare-col{
  min-width:0;padding:26px 24px;border-radius:var(--radius-lg);
  background:var(--panel);border:1px solid var(--line);
}
.compare-col.good{border-color:rgba(34,211,238,.30);box-shadow:inset 0 0 0 1px rgba(34,211,238,.08);}
.compare-col.warn{border-color:rgba(248,113,113,.28);box-shadow:inset 0 0 0 1px rgba(248,113,113,.08);}
.compare-col h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.compare-col.good h3{color:#7ef3e2;}
.compare-col.warn h3{color:#ffb4b4;}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.08);
  font-size:14.5px;color:#a9bbd8;line-height:1.75;
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0;}
.compare-list li i{margin-top:6px;font-size:12px;flex:0 0 auto;}
.compare-col.good .compare-list li i{color:#2fd7c0;}
.compare-col.warn .compare-list li i{color:#f97070;}
/* timeline */
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.step-card{
  min-width:0;position:relative;padding:24px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,background .24s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;font-size:14px;font-weight:800;
  color:#02202e;background:linear-gradient(135deg,#22d3ee,#3b82f6);
  margin-bottom:14px;
}
.step-card h3{font-size:16px;margin-bottom:8px;color:#e8f2ff;}
.step-card p{font-size:13.5px;color:#96a9c8;line-height:1.8;}
/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.news-card{
  min-width:0;display:flex;flex-direction:column;gap:10px;
  padding:22px 20px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:transform .24s ease,border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.news-card:hover{transform:translateY(-5px);border-color:var(--line-strong);background:var(--panel-strong);box-shadow:var(--glow);}
.news-tag{
  align-self:flex-start;font-size:12px;padding:4px 10px;border-radius:999px;
  color:#8fd8ff;background:rgba(34,211,238,.10);border:1px solid rgba(34,211,238,.26);
}
.news-card h3{font-size:16px;line-height:1.6;color:#eaf3ff;word-break:normal;}
.news-card p{font-size:13.5px;color:#93a6c5;line-height:1.78;}
.news-date{font-size:12.5px;color:#7b8cab;margin-top:auto;}
.news-empty{
  grid-column:1/-1;padding:28px;border-radius:var(--radius);text-align:center;
  color:#8fa1c2;font-size:14.5px;background:var(--panel);border:1px dashed var(--line-strong);
}
/* risk */
.risk-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.risk-item{
  min-width:0;display:flex;gap:14px;align-items:flex-start;
  padding:22px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .24s ease,background .24s ease;
}
.risk-item:hover{border-color:var(--line-strong);background:var(--panel-strong);}
.risk-item i{color:#4fc3ff;font-size:16px;margin-top:4px;flex:0 0 auto;}
.risk-item h3{font-size:16px;margin-bottom:7px;color:#e8f2ff;}
.risk-item p{font-size:14px;color:#98abc9;line-height:1.8;}
/* faq */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--radius);border:1px solid var(--line);
  background:var(--panel);overflow:hidden;
  transition:border-color .24s ease,background .24s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:var(--panel-strong);}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 22px;font-size:15.5px;font-weight:600;color:#e6f0ff;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:#7fd6ff;transition:transform .24s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:#9db0cf;line-height:1.85;}
/* download */
.dl-wrap{
  border-radius:var(--radius-lg);padding:36px 32px;
  background:linear-gradient(135deg,rgba(59,130,246,.16),rgba(139,92,246,.12));
  border:1px solid rgba(120,180,255,.28);
  box-shadow:var(--shadow);
}
.dl-inner{display:grid;grid-template-columns:1.05fr 1fr;gap:28px;align-items:center;}
.dl-copy h2{font-size:26px;margin-bottom:12px;}
.dl-copy p{color:#a8bad8;font-size:15px;}
.dl-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:18px 12px;border-radius:var(--radius);text-align:center;
  background:rgba(9,16,30,.62);border:1px solid rgba(120,180,255,.26);
  color:#d8e7ff;font-size:14px;font-weight:700;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.dl-btn i{font-size:20px;color:#5fd8ff;}
.dl-btn:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.6);background:rgba(12,24,44,.9);box-shadow:0 16px 36px rgba(34,211,238,.22);}
.dl-btn:active{transform:translateY(0);}
.dl-note{margin-top:16px;font-size:12.5px;color:#8194b3;}
/* final cta */
.cta-band{
  border-radius:var(--radius-lg);padding:40px 32px;text-align:center;
  background:linear-gradient(140deg,rgba(34,211,238,.14),rgba(59,130,246,.10));
  border:1px solid rgba(120,180,255,.26);
}
.cta-band h2{font-size:26px;margin-bottom:12px;}
.cta-band p{color:#a8bad8;font-size:15px;max-width:760px;margin:0 auto 22px;}
.cta-band .btn{flex-wrap:wrap;}
/* footer */
.site-footer{
  margin-top:20px;padding:56px 0 26px;
  border-top:1px solid rgba(255,255,255,.07);
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,0));
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-title{font-size:16px;font-weight:700;color:#e9eefb;}
.footer-desc{font-size:13.5px;color:#8fa1c2;line-height:1.85;max-width:460px;}
.footer-col h3{font-size:14px;color:#cfe0ff;margin-bottom:14px;font-weight:700;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:13.5px;color:#93a6c5;transition:color .2s ease,padding-left .2s ease;}
.footer-col ul a:hover{color:#7fd6ff;padding-left:4px;}
.footer-bottom{
  margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8194b3;
}
.footer-bottom h3{font-size:13.5px;color:#cfe0ff;margin-bottom:10px;}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;}
.friend-links a{font-size:13px;color:#93a6c5;transition:color .2s ease;}
.friend-links a:hover{color:#7fd6ff;}
/* responsive */
@media (max-width:1024px){
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dl-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:980px){
  .header-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px;gap:12px;}
  .site-nav{order:3;width:100%;margin-left:0;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;}
  .nav-cta{margin-left:auto;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .cat-hero{padding:40px 0 38px;}
  .cat-hero h1{font-size:27px;}
  h2,.section-head h2{font-size:23px;}
  .compare-grid,.risk-grid{grid-template-columns:1fr;}
  .matrix-grid{grid-template-columns:1fr;}
  .dl-btns{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 20px;}
  .dl-wrap{padding:26px 20px;}
}
@media (max-width:520px){
  .metric-grid,.timeline,.news-grid{grid-template-columns:1fr;}
  .cat-hero h1{font-size:23px;}
  .brand-text{font-size:15px;}
  .brand-text span{font-size:12px;}
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}