/* roulang page: index */
:root{
  --bx-bg:#060A12;
  --bx-bg-1:#0B1220;
  --bx-bg-2:#101A2C;
  --bx-line:rgba(126,168,255,.14);
  --bx-line-strong:rgba(126,168,255,.28);
  --bx-t1:#E9EFFA;
  --bx-t2:#A6B4CC;
  --bx-t3:#6C7B95;
  --bx-brand:#2C6BFF;
  --bx-brand-2:#59A0FF;
  --bx-teal:#17D1C0;
  --bx-amber:#FFB020;
  --bx-violet:#9A6BFF;
  --bx-slate:#7C8DA8;
  --bx-r-btn:10px;
  --bx-r-card:16px;
  --bx-r-panel:24px;
  --bx-shadow:0 12px 32px -12px rgba(0,0,0,.7);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bx-bg);
  color:var(--bx-t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(58% 46% at 10% -4%, rgba(44,107,255,.14), transparent 62%),
    radial-gradient(52% 44% at 94% 14%, rgba(23,209,192,.09), transparent 64%),
    linear-gradient(rgba(126,168,255,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,168,255,.032) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px, 24px 24px;
}
body > *{position:relative;z-index:1;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--bx-brand-2);outline-offset:2px;border-radius:6px;}

.bx-container{width:100%;max-width:1220px;margin:0 auto;padding:0 32px;}
@media (min-width:1440px){.bx-container{max-width:1320px;}}
@media (max-width:640px){.bx-container{padding:0 20px;}}

/* ---------- 顶部信息条 ---------- */
.bx-topbar{
  height:36px;
  background:rgba(6,10,18,.92);
  border-bottom:1px solid var(--bx-line);
  font-size:13px;
  color:var(--bx-t3);
}
.bx-topbar-inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  white-space:nowrap;
}
.bx-topbar-domain{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--bx-t2);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.bx-dot{width:6px;height:6px;border-radius:999px;background:var(--bx-teal);box-shadow:0 0 10px rgba(23,209,192,.8);display:inline-block;}
.bx-topbar-mid{color:var(--bx-t3);display:inline-flex;align-items:center;gap:10px;}
.bx-topbar-right{display:inline-flex;align-items:center;gap:18px;}
.bx-topbar-right a{color:var(--bx-t2);transition:color .18s ease;}
.bx-topbar-right a:hover{color:var(--bx-brand-2);}
.bx-topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid var(--bx-line-strong);border-radius:999px;
  color:var(--bx-t1);font-size:12px;transition:all .18s ease;
}
.bx-topbar-btn:hover{border-color:var(--bx-brand-2);color:var(--bx-brand-2);box-shadow:0 0 0 1px rgba(89,160,255,.35);}
@media (max-width:767px){
  .bx-topbar{overflow-x:auto;}
  .bx-topbar-inner{justify-content:flex-start;gap:24px;}
  .bx-topbar-mid{display:none;}
}

/* ---------- 主导航 ---------- */
.bx-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,18,.55);
  border-bottom:1px solid transparent;
  transition:background .22s ease, border-color .22s ease, backdrop-filter .22s ease;
}
.bx-header.is-stuck{
  background:rgba(8,13,24,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--bx-line);
}
.bx-header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.bx-brand{display:inline-flex;align-items:center;gap:10px;}
.bx-logo{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--bx-brand),var(--bx-brand-2) 55%,var(--bx-teal));
  position:relative;flex:none;
  box-shadow:0 0 0 1px rgba(89,160,255,.35), 0 8px 22px -10px rgba(44,107,255,.9);
}
.bx-logo::after{
  content:"";position:absolute;left:9px;top:15px;width:16px;height:4px;border-radius:2px;
  background:rgba(6,10,18,.82);
}
.bx-logo::before{
  content:"";position:absolute;left:9px;top:9px;width:8px;height:4px;border-radius:2px;
  background:rgba(6,10,18,.55);
}
.bx-brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--bx-t1);}
.bx-nav{display:flex;align-items:center;gap:30px;}
.bx-nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:68px;
  font-size:15px;
  color:var(--bx-t2);
  transition:color .18s ease;
}
.bx-nav-link:hover{color:var(--bx-t1);}
.bx-nav-link.is-active{color:var(--bx-t1);font-weight:600;}
.bx-nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;border-radius:2px;
  background:var(--bx-brand);
  box-shadow:0 0 12px rgba(44,107,255,.95);
}
.bx-nav-actions{display:flex;align-items:center;gap:12px;}
.bx-burger{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--bx-line-strong);background:rgba(16,26,44,.6);
  align-items:center;justify-content:center;cursor:pointer;
}
.bx-burger span{display:block;width:18px;height:2px;background:var(--bx-t1);border-radius:2px;position:relative;}
.bx-burger span::before,.bx-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--bx-t1);border-radius:2px;}
.bx-burger span::before{top:-6px;}
.bx-burger span::after{top:6px;}
@media (max-width:1023px){
  .bx-nav{display:none;}
  .bx-nav-actions .bx-btn{display:none;}
  .bx-burger{display:inline-flex;}
}

/* ---------- 抽屉 ---------- */
.bx-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:380px;z-index:90;
  background:linear-gradient(160deg,rgba(16,26,44,.98),rgba(9,14,26,.98));
  border-left:1px solid var(--bx-line-strong);
  transform:translateX(102%);
  transition:transform .26s ease;
  padding:20px 22px 32px;
  overflow-y:auto;
}
.bx-drawer.is-open{transform:translateX(0);}
.bx-drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.6);z-index:80;opacity:0;pointer-events:none;
  transition:opacity .26s ease;
}
.bx-drawer-mask.is-open{opacity:1;pointer-events:auto;}
.bx-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.bx-drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--bx-line-strong);
  background:transparent;color:var(--bx-t1);font-size:20px;cursor:pointer;line-height:1;
}
.bx-drawer-nav{display:flex;flex-direction:column;gap:4px;margin:18px 0 22px;}
.bx-drawer-nav a{
  padding:13px 12px;border-radius:10px;color:var(--bx-t2);font-size:15px;
  border-left:2px solid transparent;transition:all .18s ease;
}
.bx-drawer-nav a:hover{background:rgba(44,107,255,.08);color:var(--bx-t1);}
.bx-drawer-nav a.is-active{color:var(--bx-t1);border-left-color:var(--bx-brand);background:rgba(44,107,255,.09);font-weight:600;}
.bx-drawer-note{font-size:13px;color:var(--bx-t3);border-top:1px solid var(--bx-line);padding-top:16px;line-height:1.7;}

/* ---------- 通用 ---------- */
.bx-section{padding:104px 0;}
@media (max-width:1023px){.bx-section{padding:76px 0;}}
@media (max-width:639px){.bx-section{padding:56px 0;}}
.bx-glass{
  position:relative;
  background:linear-gradient(160deg, rgba(24,38,64,.72), rgba(12,20,36,.58));
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow), inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.bx-glass::before{
  content:"";position:absolute;top:0;left:22px;width:18px;height:2px;border-radius:0 0 2px 2px;
  background:linear-gradient(90deg,var(--bx-brand),var(--bx-brand-2));
}
.bx-glass:hover{border-color:var(--bx-line-strong);transform:translateY(-2px);}
.bx-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--bx-brand-2);font-weight:600;
}
.bx-eyebrow::before{content:"";width:18px;height:1px;background:var(--bx-brand-2);display:inline-block;}
.bx-h2{font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--bx-t1);}
.bx-lead{color:var(--bx-t2);font-size:15px;line-height:1.8;}
.bx-section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  margin-bottom:44px;flex-wrap:wrap;
}
.bx-section-head .bx-head-text{max-width:640px;display:flex;flex-direction:column;gap:14px;}

/* ---------- 按钮 ---------- */
.bx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--bx-r-btn);
  font-size:14px;font-weight:600;white-space:nowrap;cursor:pointer;
  border:1px solid transparent;
  transition:all .18s ease;
}
.bx-btn-lg{height:48px;padding:0 28px;font-size:15px;}
.bx-btn-sm{height:32px;padding:0 16px;font-size:13px;}
.bx-btn-primary{
  background-image:linear-gradient(135deg,var(--bx-brand),var(--bx-brand-2));
  color:#fff;
  box-shadow:0 0 0 1px rgba(44,107,255,.4), 0 10px 30px -8px rgba(44,107,255,.55);
}
.bx-btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(44,107,255,.55), 0 14px 38px -8px rgba(44,107,255,.7);}
.bx-btn-primary:active{transform:translateY(0);}
.bx-btn-secondary{
  background:rgba(16,26,44,.62);
  border-color:var(--bx-line-strong);
  color:var(--bx-t1);
}
.bx-btn-secondary:hover{border-color:var(--bx-brand-2);color:var(--bx-brand-2);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(89,160,255,.28);}
.bx-btn-ghost{color:var(--bx-t2);padding:0 4px;}
.bx-btn-ghost:hover{color:var(--bx-brand-2);}
.bx-btn[disabled]{opacity:.6;filter:saturate(.6);pointer-events:none;}

/* ---------- 徽章 ---------- */
.bx-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(89,160,255,.12);color:var(--bx-brand-2);border:1px solid rgba(89,160,255,.3);
}
.bx-badge-teal{background:rgba(23,209,192,.12);color:var(--bx-teal);border-color:rgba(23,209,192,.3);}
.bx-badge-amber{background:rgba(255,176,32,.12);color:var(--bx-amber);border-color:rgba(255,176,32,.3);}
.bx-badge-violet{background:rgba(154,107,255,.12);color:var(--bx-violet);border-color:rgba(154,107,255,.3);}
.bx-badge-slate{background:rgba(124,141,168,.12);color:var(--bx-slate);border-color:rgba(124,141,168,.3);}

/* ---------- Hero ---------- */
.bx-hero{padding:72px 0 88px;position:relative;overflow:hidden;}
.bx-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.bx-hero-h1{
  font-size:clamp(32px,4.4vw,54px);
  font-weight:700;line-height:1.15;letter-spacing:-.01em;
  color:var(--bx-t1);
  margin-top:18px;
}
.bx-hero-sub{color:var(--bx-t2);font-size:17px;line-height:1.8;margin-top:20px;max-width:560px;}
.bx-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.bx-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;
  margin-top:48px;padding-top:28px;border-top:1px solid var(--bx-line);
}
.bx-metric-num{
  font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--bx-t1);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;
}
.bx-metric-num em{font-style:normal;font-size:14px;color:var(--bx-brand-2);margin-left:4px;font-weight:600;}
.bx-metric-label{font-size:13px;color:var(--bx-t3);margin-top:6px;}
.bx-hero-visual{position:relative;min-height:400px;}
.bx-hero-bg{
  position:absolute;inset:-8% -6% 6% -6%;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.22;border-radius:var(--bx-r-panel);
  filter:saturate(.9);
}
.bx-hero-cover{
  position:relative;z-index:2;
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--bx-r-panel);
  border:1px solid var(--bx-line-strong);
  box-shadow:0 24px 60px -22px rgba(0,0,0,.9);
}
.bx-float{
  position:absolute;z-index:3;left:-22px;bottom:26px;
  padding:16px 18px;border-radius:var(--bx-r-card);min-width:210px;
}
.bx-float-title{font-size:12px;color:var(--bx-t3);letter-spacing:.06em;}
.bx-float-value{font-size:20px;font-weight:700;color:var(--bx-t1);font-variant-numeric:tabular-nums;margin-top:4px;}
.bx-float-bar{height:6px;border-radius:999px;background:rgba(126,168,255,.16);overflow:hidden;margin-top:12px;}
.bx-float-bar i{display:block;height:100%;width:72%;border-radius:999px;background:linear-gradient(90deg,var(--bx-brand),var(--bx-teal));}
@media (max-width:1023px){
  .bx-hero{padding:52px 0 64px;}
  .bx-hero-grid{grid-template-columns:1fr;gap:40px;}
  .bx-hero-visual{min-height:220px;height:220px;}
  .bx-hero-bg{inset:0;}
  .bx-hero-cover{aspect-ratio:auto;height:220px;}
  .bx-float{left:12px;bottom:12px;padding:12px 14px;min-width:170px;}
}

/* ---------- 权益对比表 ---------- */
.bx-matrix-wrap{border-radius:var(--bx-r-panel);overflow:hidden;}
.bx-matrix{width:100%;border-collapse:separate;border-spacing:0;font-size:14px;}
.bx-matrix th,.bx-matrix td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--bx-line);vertical-align:middle;}
.bx-matrix thead th{
  position:sticky;top:68px;z-index:5;
  background:rgba(11,18,32,.96);
  backdrop-filter:blur(10px);
  font-size:14px;font-weight:600;color:var(--bx-t1);
  border-bottom:1px solid var(--bx-line-strong);
}
.bx-matrix thead th small{display:block;font-size:12px;color:var(--bx-t3);font-weight:400;margin-top:2px;}
.bx-matrix tbody tr{transition:background .16s ease;}
.bx-matrix tbody tr:hover{background:rgba(44,107,255,.07);}
.bx-matrix tbody th{font-weight:500;color:var(--bx-t2);font-size:14px;background:transparent;}
.bx-matrix td{color:var(--bx-t2);text-align:center;}
.bx-matrix td:first-child,.bx-matrix th:first-child{text-align:left;}
.bx-matrix .bx-col-reco{
  background:rgba(44,107,255,.07);
  border-left:1px solid rgba(44,107,255,.34);
  border-right:1px solid rgba(44,107,255,.34);
}
.bx-matrix thead .bx-col-reco{background:rgba(44,107,255,.13);}
.bx-matrix .bx-col-reco-last{border-bottom:1px solid rgba(44,107,255,.34);}
.bx-tick{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:999px;font-size:12px;font-weight:700;}
.bx-tick.yes{background:rgba(23,209,192,.14);color:var(--bx-teal);border:1px solid rgba(23,209,192,.34);}
.bx-tick.no{background:rgba(124,141,168,.1);color:var(--bx-t3);border:1px solid rgba(124,141,168,.22);}
.bx-reco-tag{
  display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600;
  background:rgba(255,176,32,.14);color:var(--bx-amber);border:1px solid rgba(255,176,32,.34);margin-left:8px;
}
.bx-tier-cards{display:none;gap:16px;}
.bx-tier-card{padding:24px;}
.bx-tier-card h4{font-size:17px;font-weight:700;color:var(--bx-t1);}
.bx-tier-card ul{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.bx-tier-card li{font-size:14px;color:var(--bx-t2);display:flex;gap:10px;align-items:flex-start;}
.bx-tier-card li .bx-tick{margin-top:3px;flex:none;}
@media (max-width:1023px){
  .bx-matrix-wrap{display:none;}
  .bx-tier-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:639px){
  .bx-tier-cards{grid-template-columns:1fr;}
}

/* ---------- 等级亮点 ---------- */
.bx-tier-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:22px;align-items:start;}
.bx-tier-highlight{padding:30px 28px;overflow:hidden;}
.bx-tier-highlight .bar{position:absolute;top:0;left:0;right:0;height:2px;}
.bx-tier-highlight h3{font-size:21px;font-weight:700;margin-top:14px;}
.bx-tier-highlight .point{margin-top:18px;display:flex;flex-direction:column;gap:11px;}
.bx-tier-highlight .point li{font-size:14px;color:var(--bx-t2);display:flex;gap:10px;}
.bx-tier-highlight .point li::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--bx-brand-2);margin-top:10px;flex:none;}
.bx-tier-highlight.big{grid-row:span 2;padding:38px 34px;}
.bx-tier-highlight.big h3{font-size:26px;}
@media (max-width:1023px){
  .bx-tier-grid{grid-template-columns:1fr 1fr;}
  .bx-tier-highlight.big{grid-column:span 2;grid-row:auto;}
}
@media (max-width:639px){
  .bx-tier-grid{grid-template-columns:1fr;}
  .bx-tier-highlight.big{grid-column:span 1;}
}

/* ---------- 内容预览 ---------- */
.bx-preview-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:22px;}
.bx-card{overflow:hidden;display:flex;flex-direction:column;padding:0;}
.bx-card-media{position:relative;overflow:hidden;aspect-ratio:16/9;border-radius:var(--bx-r-card) var(--bx-r-card) 0 0;}
.bx-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.bx-card:hover .bx-card-media img{transform:scale(1.04);}
.bx-card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.bx-card-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--bx-t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bx-card-desc{font-size:14px;line-height:1.7;color:var(--bx-t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bx-card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--bx-line);
  font-size:13px;color:var(--bx-t3);
}
.bx-card-foot .bx-more{color:var(--bx-brand-2);font-weight:600;}
.bx-preview-grid .bx-card.feature .bx-card-title{font-size:22px;}
@media (max-width:1023px){.bx-preview-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:639px){.bx-preview-grid{grid-template-columns:1fr;}}

/* ---------- 最新信息 ---------- */
.bx-post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.bx-post-card{padding:24px;display:flex;flex-direction:column;gap:12px;min-height:210px;}
.bx-post-title{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--bx-t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.bx-post-card:hover .bx-post-title{color:var(--bx-brand-2);}
.bx-post-desc{font-size:14px;line-height:1.7;color:var(--bx-t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bx-post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--bx-t3);padding-top:14px;border-top:1px solid var(--bx-line);}
.bx-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;text-align:center;color:var(--bx-t3);font-size:14px;
}
.bx-empty svg{opacity:.6;}
@media (max-width:1023px){.bx-post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:639px){.bx-post-grid{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.bx-faq{display:flex;flex-direction:column;gap:12px;}
.bx-faq-item{padding:0;overflow:hidden;position:relative;}
.bx-faq-item::before{content:none;}
.bx-faq-item::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--bx-brand);opacity:0;transition:opacity .2s ease;
}
.bx-faq-item.is-open::after{opacity:1;}
.bx-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;color:var(--bx-t1);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.bx-faq-sign{position:relative;width:18px;height:18px;flex:none;}
.bx-faq-sign::before,.bx-faq-sign::after{
  content:"";position:absolute;background:var(--bx-brand-2);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.bx-faq-sign::before{left:0;top:8px;width:18px;height:2px;}
.bx-faq-sign::after{left:8px;top:0;width:2px;height:18px;}
.bx-faq-item.is-open .bx-faq-sign::after{transform:rotate(90deg);opacity:0;}
.bx-faq-a{
  max-height:0;overflow:hidden;transition:max-height .2s ease;
  padding:0 24px;color:var(--bx-t2);font-size:15px;line-height:1.8;
}
.bx-faq-item.is-open .bx-faq-a{max-height:340px;padding-bottom:22px;}

/* ---------- CTA 表单 ---------- */
.bx-cta-panel{
  position:relative;overflow:hidden;border-radius:var(--bx-r-panel);
  border:1px solid var(--bx-line);
  background:linear-gradient(160deg, rgba(20,34,58,.86), rgba(9,15,28,.86));
  box-shadow:var(--bx-shadow);
  padding:52px 48px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;
}
.bx-cta-panel::before{
  content:"";position:absolute;left:-15%;top:-40%;width:60%;height:180%;
  background:radial-gradient(closest-side, rgba(44,107,255,.16), transparent 72%);
  pointer-events:none;
}
.bx-cta-steps{display:flex;flex-direction:column;gap:20px;margin-top:28px;position:relative;z-index:1;}
.bx-cta-step{display:flex;gap:14px;align-items:flex-start;}
.bx-cta-num{
  width:28px;height:28px;flex:none;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--bx-brand-2);background:rgba(44,107,255,.13);
  border:1px solid rgba(44,107,255,.34);font-variant-numeric:tabular-nums;
}
.bx-cta-step p{font-size:14px;color:var(--bx-t2);line-height:1.7;}
.bx-form{position:relative;z-index:1;display:flex;flex-direction:column;gap:16px;}
.bx-field{display:flex;flex-direction:column;gap:8px;}
.bx-field label{font-size:14px;color:var(--bx-t2);}
.bx-input,.bx-textarea{
  width:100%;background:rgba(9,15,28,.7);border:1px solid var(--bx-line-strong);
  border-radius:var(--bx-r-btn);color:var(--bx-t1);font-size:14px;font-family:inherit;
  padding:0 14px;height:44px;transition:border-color .18s ease, box-shadow .18s ease;
}
.bx-textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.bx-input::placeholder,.bx-textarea::placeholder{color:var(--bx-t3);}
.bx-input:focus,.bx-textarea:focus{
  outline:none;border-color:var(--bx-brand-2);
  box-shadow:0 0 0 1px rgba(89,160,255,.4), 0 0 22px -6px rgba(44,107,255,.65);
}
.bx-check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--bx-t2);line-height:1.7;}
.bx-check input{margin-top:5px;width:16px;height:16px;accent-color:#2C6BFF;flex:none;}
.bx-form-note{font-size:13px;color:var(--bx-t3);}
.bx-form-msg{font-size:13px;color:var(--bx-teal);min-height:20px;}
@media (max-width:1023px){
  .bx-cta-panel{grid-template-columns:1fr;padding:36px 26px;gap:32px;}
}

/* ---------- 页脚 ---------- */
.bx-footer{border-top:1px solid var(--bx-line);background:rgba(6,10,18,.72);margin-top:22px;}
.bx-footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding:64px 0 44px;
}
.bx-footer h4{font-size:14px;font-weight:600;color:var(--bx-t1);margin-bottom:16px;}
.bx-footer p{font-size:14px;color:var(--bx-t2);line-height:1.8;}
.bx-footer-links{display:flex;flex-direction:column;gap:11px;}
.bx-footer-links a{font-size:14px;color:var(--bx-t2);transition:color .18s ease;}
.bx-footer-links a:hover{color:var(--bx-brand-2);}
.bx-footer-bottom{
  border-top:1px solid var(--bx-line);
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--bx-t3);
}
.bx-footer-domain{font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-variant-numeric:tabular-nums;}
@media (max-width:1023px){.bx-footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;}}
@media (max-width:639px){.bx-footer-grid{grid-template-columns:1fr;gap:26px;}}

/* roulang page: article */
:root{
  --bx-bg:#060A12;
  --bx-bg-1:#0B1220;
  --bx-bg-2:#101A2C;
  --bx-line:rgba(126,168,255,.14);
  --bx-line-strong:rgba(126,168,255,.28);
  --bx-t1:#E9EFFA;
  --bx-t2:#A6B4CC;
  --bx-t3:#6C7B95;
  --bx-brand:#2C6BFF;
  --bx-brand-2:#59A0FF;
  --bx-teal:#17D1C0;
  --bx-amber:#FFB020;
  --bx-violet:#9A6BFF;
  --bx-slate:#7C8DA8;
  --bx-r-s:10px;
  --bx-r:16px;
  --bx-r-l:24px;
  --bx-shadow:0 12px 32px -12px rgba(0,0,0,.7);
  --bx-glow:0 0 0 1px rgba(44,107,255,.4), 0 10px 30px -8px rgba(44,107,255,.55);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.bx-body{
  margin:0;
  background:var(--bx-bg);
  color:var(--bx-t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
}
body.bx-body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 8% 4%, rgba(44,107,255,.16), transparent 70%),
    radial-gradient(720px 460px at 96% 78%, rgba(23,209,192,.10), transparent 72%);
}
body.bx-body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(126,168,255,.035) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(126,168,255,.035) 1px, transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--bx-t1);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.bx-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.01em;}

.bx-container{width:100%;max-width:1220px;margin:0 auto;padding:0 32px;position:relative;z-index:1;}
@media (min-width:1440px){.bx-container{max-width:1320px;}}
@media (max-width:640px){.bx-container{padding:0 20px;}}

/* 顶部信息条 */
.bx-topbar{
  background:rgba(6,10,18,.92);
  border-bottom:1px solid var(--bx-line);
  font-size:13px;
  line-height:1.4;
  position:relative;
  z-index:60;
}
.bx-topbar-inner{display:flex;align-items:center;gap:20px;height:36px;}
.bx-topbar-domain{color:var(--bx-brand-2);font-family:Inter,"Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em;opacity:.9;}
.bx-topbar-tip{color:var(--bx-t3);flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.bx-topbar-actions{display:flex;align-items:center;gap:18px;margin-left:auto;}
.bx-topbar-actions a{color:var(--bx-t2);transition:color .18s ease;}
.bx-topbar-actions a:hover{color:var(--bx-brand-2);}
.bx-topbar-scroll{display:flex;align-items:center;gap:18px;height:36px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;}
.bx-topbar-scroll::-webkit-scrollbar{display:none;}
@media (max-width:900px){
  .bx-topbar-inner{display:none;}
  .bx-topbar-mobile{display:block;}
}
@media (min-width:901px){.bx-topbar-mobile{display:none;}}

/* 导航 */
.bx-header{
  position:sticky;top:0;z-index:70;
  border-bottom:1px solid transparent;
  transition:background .22s ease, border-color .22s ease, backdrop-filter .22s ease;
  background:linear-gradient(180deg, rgba(6,10,18,.86), rgba(6,10,18,.42));
}
.bx-header.is-scrolled{
  background:rgba(9,15,26,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--bx-line);
}
.bx-header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.bx-brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.bx-logo{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  background:linear-gradient(135deg, var(--bx-brand) 0%, var(--bx-teal) 100%);
  box-shadow:0 0 0 1px rgba(44,107,255,.45), 0 8px 20px -8px rgba(44,107,255,.8);
  position:relative;
}
.bx-logo::after{
  content:"";position:absolute;inset:7px 7px auto auto;width:8px;height:8px;
  border-radius:2px;background:rgba(6,10,18,.82);
}
.bx-brand-text{font-size:19px;font-weight:700;color:var(--bx-t1);letter-spacing:-.01em;}
.bx-nav{display:flex;align-items:center;gap:6px;margin:0 auto;}
.bx-nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--bx-t2);transition:color .18s ease;
}
.bx-nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--bx-brand),var(--bx-brand-2));
  box-shadow:0 0 10px rgba(44,107,255,.9);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.bx-nav-link:hover{color:var(--bx-t1);}
.bx-nav-link:hover::after{transform:scaleX(.6);}
.bx-nav-link.is-active{color:var(--bx-t1);}
.bx-nav-link.is-active::after{transform:scaleX(1);}
.bx-header-cta{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.bx-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--bx-line);
  background:rgba(16,26,44,.6);align-items:center;justify-content:center;cursor:pointer;
}
.bx-burger span{display:block;width:18px;height:2px;background:var(--bx-t1);border-radius:2px;position:relative;}
.bx-burger span::before,.bx-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--bx-t1);border-radius:2px;}
.bx-burger span::before{top:-6px;}
.bx-burger span::after{top:6px;}
@media (max-width:1080px){
  .bx-nav{display:none;}
  .bx-burger{display:inline-flex;}
}
@media (max-width:520px){
  .bx-header-cta .bx-btn-ghost{display:none;}
  .bx-brand-text{font-size:17px;}
}

/* 抽屉 */
.bx-drawer{
  position:fixed;top:0;right:0;height:100%;width:86%;max-width:380px;z-index:120;
  background:linear-gradient(160deg, rgba(16,26,44,.98), rgba(8,13,24,.98));
  border-left:1px solid var(--bx-line-strong);
  transform:translateX(102%);transition:transform .26s ease;
  padding:20px;overflow-y:auto;
}
.bx-drawer.is-open{transform:translateX(0);}
.bx-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.bx-drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--bx-line);background:transparent;cursor:pointer;color:var(--bx-t2);font-size:20px;line-height:1;}
.bx-drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.bx-drawer-nav a{
  padding:13px 14px;border-radius:12px;color:var(--bx-t2);font-size:15px;
  border-left:2px solid transparent;
}
.bx-drawer-nav a.is-active{color:var(--bx-t1);background:rgba(44,107,255,.12);border-left-color:var(--bx-brand);}
.bx-drawer-meta{font-size:13px;color:var(--bx-t3);display:flex;flex-direction:column;gap:8px;line-height:1.6;}
.bx-overlay{position:fixed;inset:0;background:rgba(4,7,13,.66);backdrop-filter:blur(2px);z-index:110;opacity:0;visibility:hidden;transition:opacity .24s ease;}
.bx-overlay.is-open{opacity:1;visibility:visible;}

/* 按钮 */
.bx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--bx-r-s);font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;transition:transform .16s ease, box-shadow .18s ease, background .18s ease, color .18s ease, filter .18s ease;
  white-space:nowrap;
}
.bx-btn-sm{height:32px;padding:0 16px;font-size:13px;}
.bx-btn-md{height:40px;padding:0 20px;}
.bx-btn-lg{height:48px;padding:0 28px;font-size:16px;}
.bx-btn-primary{
  background:linear-gradient(135deg, var(--bx-brand), var(--bx-brand-2));
  color:#fff;box-shadow:var(--bx-glow);
}
.bx-btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(44,107,255,.5), 0 16px 36px -8px rgba(44,107,255,.7);}
.bx-btn-primary:active{transform:translateY(0);}
.bx-btn-secondary{
  background:rgba(16,26,44,.62);border-color:var(--bx-line-strong);color:var(--bx-brand-2);
  backdrop-filter:blur(10px);
}
.bx-btn-secondary:hover{border-color:rgba(89,160,255,.5);transform:translateY(-1px);color:#fff;}
.bx-btn-ghost{background:transparent;color:var(--bx-t2);}
.bx-btn-ghost:hover{color:var(--bx-brand-2);}
.bx-btn-outline{
  background:transparent;border-color:var(--bx-line-strong);color:var(--bx-t1);
}
.bx-btn-outline:hover{border-color:rgba(89,160,255,.55);color:var(--bx-brand-2);}
.bx-btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--bx-brand-2);outline-offset:2px;
}

/* 徽章与标签 */
.bx-badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
  background:rgba(44,107,255,.12);color:var(--bx-brand-2);border:1px solid rgba(44,107,255,.3);
}
.bx-badge-teal{background:rgba(23,209,192,.12);color:var(--bx-teal);border-color:rgba(23,209,192,.3);}
.bx-badge-amber{background:rgba(255,176,32,.12);color:var(--bx-amber);border-color:rgba(255,176,32,.3);}
.bx-badge-slate{background:rgba(124,141,168,.12);color:var(--bx-slate);border-color:rgba(124,141,168,.3);}
.bx-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:8px;
  font-size:13px;color:var(--bx-t2);background:rgba(16,26,44,.66);border:1px solid var(--bx-line);
  transition:.18s ease;
}
.bx-tag:hover{color:var(--bx-brand-2);border-color:var(--bx-line-strong);}

/* 卡片 */
.bx-card{
  position:relative;border-radius:var(--bx-r);
  background:linear-gradient(160deg, rgba(24,38,64,.72), rgba(12,20,36,.58));
  border:1px solid var(--bx-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow), inset 0 1px 0 rgba(255,255,255,.04);
  transition:transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  overflow:hidden;
}
.bx-card::before{
  content:"";position:absolute;top:0;left:0;width:18px;height:2px;border-radius:0 0 2px 0;
  background:linear-gradient(90deg,var(--bx-brand),var(--bx-brand-2));
}
.bx-card:hover{transform:translateY(-2px);border-color:var(--bx-line-strong);}
.bx-card-teal::before{background:linear-gradient(90deg,var(--bx-teal),#5ff0e2);}
.bx-card-amber::before{background:linear-gradient(90deg,var(--bx-amber),#ffd27a);}
.bx-card-violet::before{background:linear-gradient(90deg,var(--bx-violet),#c3a4ff);}
.bx-card-slate::before{background:linear-gradient(90deg,var(--bx-slate),#a9b8cf);}

/* 文章头部 */
.bx-article-hero{
  padding:56px 0 40px;
  border-bottom:1px solid var(--bx-line);
  background-image:linear-gradient(180deg, rgba(6,10,18,.55), rgba(6,10,18,.94)), url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.bx-crumb{font-size:13px;color:var(--bx-t3);margin-bottom:20px;}
.bx-crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.bx-crumb li{display:inline-flex;align-items:center;gap:8px;}
.bx-crumb li+li::before{content:"/";color:var(--bx-t3);opacity:.7;}
.bx-crumb a{color:var(--bx-t2);transition:color .18s ease;}
.bx-crumb a:hover{color:var(--bx-brand-2);}
.bx-crumb [aria-current]{color:var(--bx-t1);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.bx-article-title{
  font-size:clamp(30px,4vw,48px);line-height:1.2;margin:16px 0 18px;max-width:900px;
}
.bx-article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--bx-t3);
}
.bx-article-meta .dot{width:4px;height:4px;border-radius:999px;background:var(--bx-t3);opacity:.6;}

/* 正文布局 */
.bx-article-section{padding:56px 0 96px;}
.bx-article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;}
@media (max-width:1080px){
  .bx-article-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
}
.bx-article-panel{
  border-radius:var(--bx-r-l);
  background:linear-gradient(160deg, rgba(20,32,54,.6), rgba(10,17,30,.5));
  border:1px solid var(--bx-line);
  padding:40px 44px;
  box-shadow:var(--bx-shadow);
}
@media (max-width:640px){.bx-article-panel{padding:24px 20px;}}

.bx-prose{max-width:800px;font-size:17px;line-height:1.85;color:var(--bx-t2);}
.bx-prose > * + *{margin-top:1.2em;}
.bx-prose h2{
  position:relative;font-size:clamp(21px,2.2vw,25px);font-weight:700;color:var(--bx-t1);
  padding-left:16px;margin-top:1.9em;line-height:1.4;
}
.bx-prose h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:2px;
  background:var(--bx-brand);box-shadow:0 0 12px rgba(44,107,255,.85);
}
.bx-prose h3{font-size:20px;font-weight:600;color:var(--bx-t1);margin-top:1.6em;}
.bx-prose h4{font-size:17px;font-weight:600;color:var(--bx-t1);margin-top:1.4em;}
.bx-prose strong{color:var(--bx-t1);font-weight:600;}
.bx-prose a{color:var(--bx-brand-2);border-bottom:1px solid rgba(89,160,255,.35);transition:.18s ease;}
.bx-prose a:hover{color:#fff;border-bottom-color:#fff;}
.bx-prose ul,.bx-prose ol{padding-left:0;}
.bx-prose ul li{position:relative;padding-left:22px;margin-top:.6em;}
.bx-prose ul li::before{
  content:"";position:absolute;left:3px;top:.72em;width:6px;height:6px;border-radius:999px;
  background:var(--bx-brand-2);box-shadow:0 0 8px rgba(89,160,255,.8);
}
.bx-prose ol{counter-reset:bxi;}
.bx-prose ol li{position:relative;padding-left:30px;margin-top:.6em;counter-increment:bxi;}
.bx-prose ol li::before{
  content:counter(bxi);position:absolute;left:0;top:.45em;width:20px;height:20px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
  color:var(--bx-brand-2);background:rgba(44,107,255,.14);border:1px solid rgba(44,107,255,.3);
}
.bx-prose blockquote{
  margin-left:0;margin-right:0;padding:16px 22px;border-left:3px solid var(--bx-brand);
  border-radius:0 12px 12px 0;color:var(--bx-t1);
  background:linear-gradient(160deg, rgba(24,38,64,.7), rgba(12,20,36,.55));
}
.bx-prose blockquote p{margin:0;}
.bx-prose img{border-radius:12px;margin:1.4em 0;border:1px solid var(--bx-line);}
.bx-prose figure{margin:1.6em 0;}
.bx-prose figcaption{font-size:13px;color:var(--bx-t3);text-align:center;margin-top:10px;}
.bx-prose table{
  width:100%;border-collapse:collapse;font-size:15px;overflow:hidden;border-radius:12px;
  background:linear-gradient(160deg, rgba(20,32,54,.68), rgba(10,17,30,.6));
  border:1px solid var(--bx-line);display:block;overflow-x:auto;
}
.bx-prose thead th{
  background:rgba(44,107,255,.12);color:var(--bx-t1);font-weight:600;text-align:left;
  padding:12px 16px;white-space:nowrap;
}
.bx-prose tbody td{padding:12px 16px;border-top:1px solid var(--bx-line);color:var(--bx-t2);}
.bx-prose tbody tr:nth-child(even){background:rgba(126,168,255,.03);}
.bx-prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  padding:2px 6px;border-radius:6px;background:rgba(44,107,255,.12);color:var(--bx-brand-2);
}
.bx-prose pre{
  padding:18px 20px;border-radius:12px;overflow-x:auto;
  background:rgba(9,15,26,.86);border:1px solid var(--bx-line);
}
.bx-prose pre code{background:none;padding:0;color:var(--bx-t1);}
.bx-prose hr{border:0;border-top:1px solid var(--bx-line);margin:2em 0;}

/* 空态 */
.bx-empty{
  padding:56px 20px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.bx-empty svg{width:44px;height:44px;color:var(--bx-t3);}
.bx-empty p{color:var(--bx-t2);font-size:15px;}

/* 文末工具 */
.bx-article-foot{
  margin-top:40px;padding-top:28px;border-top:1px solid var(--bx-line);
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
}
.bx-taglist{display:flex;flex-wrap:wrap;gap:10px;}
.bx-share{display:flex;gap:10px;flex-wrap:wrap;}
.bx-share button{
  height:36px;padding:0 14px;border-radius:var(--bx-r-s);font-size:13px;
  background:rgba(16,26,44,.66);border:1px solid var(--bx-line);color:var(--bx-t2);cursor:pointer;
  transition:.18s ease;
}
.bx-share button:hover{color:var(--bx-brand-2);border-color:var(--bx-line-strong);transform:translateY(-1px);}

/* 上下篇 / 继续浏览 */
.bx-navnext{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px;}
@media (max-width:720px){.bx-navnext{grid-template-columns:1fr;}}
.bx-navnext-card{display:block;padding:20px 22px;}
.bx-navnext-card span{font-size:13px;color:var(--bx-t3);}
.bx-navnext-card strong{display:block;font-size:16px;font-weight:600;color:var(--bx-t1);margin-top:8px;line-height:1.6;}
.bx-navnext-card:hover strong{color:var(--bx-brand-2);}

/* 相关推荐 */
.bx-related{margin-top:56px;}
.bx-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.bx-section-head h2{font-size:clamp(22px,2.4vw,30px);}
.bx-section-head p{font-size:14px;color:var(--bx-t3);margin-top:8px;}
.bx-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
@media (max-width:980px){.bx-related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:640px){.bx-related-grid{grid-template-columns:1fr;}}
.bx-rel-card{display:flex;flex-direction:column;height:100%;}
.bx-rel-thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:12px;margin:14px 14px 0;
  background:rgba(9,15,26,.7);
}
.bx-rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.bx-rel-card:hover .bx-rel-thumb img{transform:scale(1.05);}
.bx-rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.bx-rel-body h3{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bx-rel-body p{font-size:14px;color:var(--bx-t2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bx-rel-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--bx-t3);}

/* 侧栏 */
.bx-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
@media (max-width:1080px){.bx-side{position:static;}}
.bx-side-card{padding:22px;}
.bx-side-card h3{font-size:16px;font-weight:600;margin-bottom:14px;}
.bx-side-list{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--bx-t2);}
.bx-side-list li{display:flex;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px dashed var(--bx-line);}
.bx-side-list li:last-child{border-bottom:0;padding-bottom:0;}
.bx-side-list b{color:var(--bx-t1);font-weight:600;}
.bx-side-cta{
  padding:24px 22px;
  background:linear-gradient(160deg, rgba(44,107,255,.18), rgba(12,20,36,.66));
}
.bx-side-cta p{font-size:14px;color:var(--bx-t2);margin:10px 0 18px;line-height:1.7;}

/* 底部 CTA 条 */
.bx-cta-band{
  margin:0 0 0;padding:0 0 96px;
}
.bx-cta-inner{
  border-radius:var(--bx-r-l);padding:40px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:
    radial-gradient(420px 200px at 12% 20%, rgba(44,107,255,.24), transparent 70%),
    linear-gradient(160deg, rgba(24,38,64,.78), rgba(10,17,30,.66));
  border:1px solid var(--bx-line-strong);
  box-shadow:var(--bx-shadow);
}
@media (max-width:640px){.bx-cta-inner{padding:28px 22px;}}
.bx-cta-inner h2{font-size:clamp(22px,2.4vw,30px);}
.bx-cta-inner p{font-size:15px;color:var(--bx-t2);margin-top:10px;max-width:640px;}

/* 页脚 */
.bx-footer{border-top:1px solid var(--bx-line);background:rgba(8,13,24,.72);padding:64px 0 0;margin-top:0;}
.bx-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
@media (max-width:980px){.bx-footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.bx-footer-grid{grid-template-columns:1fr;}}
.bx-footer h4{font-size:14px;font-weight:600;color:var(--bx-t1);margin-bottom:16px;}
.bx-footer p{font-size:14px;color:var(--bx-t2);line-height:1.75;}
.bx-footer-links{display:flex;flex-direction:column;gap:10px;}
.bx-footer-links a{font-size:14px;color:var(--bx-t2);transition:color .18s ease;}
.bx-footer-links a:hover{color:var(--bx-brand-2);}
.bx-footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--bx-line);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--bx-t3);
}
.bx-footer-domain{font-family:Inter,"Helvetica Neue",Arial,sans-serif;font-variant-numeric:tabular-nums;color:var(--bx-t2);}
.bx-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* roulang page: category1 */
:root{
  --bx-bg:#060A12;
  --bx-bg-1:#0B1220;
  --bx-bg-2:#101A2C;
  --bx-line:rgba(126,168,255,.14);
  --bx-line-strong:rgba(126,168,255,.28);
  --bx-t1:#E9EFFA;
  --bx-t2:#A6B4CC;
  --bx-t3:#6C7B95;
  --bx-brand:#2C6BFF;
  --bx-brand-2:#59A0FF;
  --bx-teal:#17D1C0;
  --bx-amber:#FFB020;
  --bx-violet:#9A6BFF;
  --bx-slate:#7C8DA8;
  --bx-r-btn:10px;
  --bx-r-card:16px;
  --bx-r-panel:24px;
  --bx-shadow:0 12px 32px -12px rgba(0,0,0,.7);
}

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

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background-color:var(--bx-bg);
  color:var(--bx-t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(920px 540px at 6% -8%, rgba(44,107,255,.10), transparent 62%),
    radial-gradient(780px 480px at 98% 22%, rgba(23,209,192,.07), transparent 64%),
    linear-gradient(rgba(126,168,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,168,255,.035) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px, 24px 24px;
}

img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration:none; }
button,input,select,textarea{ font:inherit; color:inherit; }
h1,h2,h3,h4,p,ul,ol{ margin:0; }
ul,ol{ padding:0; list-style:none; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible{
  outline:2px solid var(--bx-brand-2);
  outline-offset:2px;
  border-radius:8px;
}

.bx-page{ position:relative; z-index:1; }

.bx-container{
  width:100%;
  max-width:1220px;
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){ .bx-container{ max-width:1320px; } }
@media (max-width:640px){ .bx-container{ padding:0 20px; } }

.bx-mono{ font-variant-numeric:tabular-nums; font-feature-settings:"tnum" 1; }

/* ---------- 顶部信息条 ---------- */
.bx-topbar{
  background:rgba(6,10,18,.92);
  border-bottom:1px solid var(--bx-line);
  font-size:13px;
  color:var(--bx-t3);
}
.bx-topbar-inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.bx-topbar-left{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--bx-t2);
  white-space:nowrap;
}
.bx-topbar-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--bx-teal);
  box-shadow:0 0 8px rgba(23,209,192,.8);
  flex:0 0 auto;
}
.bx-topbar-domain{
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--bx-t2);
}
.bx-topbar-mid{ color:var(--bx-t3); white-space:nowrap; }
.bx-topbar-right{ display:inline-flex; align-items:center; gap:18px; }
.bx-topbar-right a{
  color:var(--bx-t2);
  transition:color .18s ease;
  white-space:nowrap;
}
.bx-topbar-right a:hover{ color:var(--bx-brand-2); }
.bx-topbar-btn{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border:1px solid var(--bx-line-strong);
  border-radius:999px;
  color:var(--bx-brand-2) !important;
  font-size:12px;
  transition:border-color .18s ease, background .18s ease;
}
.bx-topbar-btn:hover{ background:rgba(44,107,255,.12); border-color:var(--bx-brand-2); }

@media (max-width:767px){
  .bx-topbar-inner{
    justify-content:flex-start;
    overflow-x:auto;
    gap:16px;
    scrollbar-width:none;
  }
  .bx-topbar-inner::-webkit-scrollbar{ display:none; }
  .bx-topbar-mid{ display:none; }
}

/* ---------- 主导航 ---------- */
.bx-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,18,.55);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.bx-header.is-scrolled{
  background:rgba(8,13,24,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--bx-line);
}
.bx-header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.bx-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.bx-logo{
  position:relative;
  width:26px;
  height:26px;
  flex:0 0 auto;
  border-radius:8px;
  background:linear-gradient(135deg,var(--bx-brand),var(--bx-teal));
  box-shadow:0 0 0 1px rgba(89,160,255,.4), 0 10px 24px -10px rgba(44,107,255,.85);
}
.bx-logo::after{
  content:"";
  position:absolute;
  left:7px;
  right:7px;
  top:50%;
  height:2px;
  border-radius:2px;
  background:rgba(233,239,250,.92);
  transform:translateY(-50%) rotate(-45deg);
}
.bx-brand-text{
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--bx-t1);
  white-space:nowrap;
}
.bx-nav{ display:flex; align-items:center; gap:2px; }
.bx-nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--bx-t2);
  border-radius:8px;
  transition:color .18s ease, background .18s ease;
  white-space:nowrap;
}
.bx-nav-link:hover{ color:var(--bx-t1); background:rgba(126,168,255,.06); }
.bx-nav-link.is-active{ color:var(--bx-t1); }
.bx-nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--bx-brand-2);
  box-shadow:0 0 10px 1px rgba(44,107,255,.9);
}
.bx-header-actions{ display:flex; align-items:center; gap:10px; flex:0 0 auto; }

/* ---------- 按钮 ---------- */
.bx-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 20px;
  border-radius:var(--bx-r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease, filter .18s ease;
}
.bx-btn:active{ transform:translateY(1px); }
.bx-btn-primary{
  background:linear-gradient(120deg,#2C6BFF,#59A0FF);
  color:#fff;
  box-shadow:0 0 0 1px rgba(44,107,255,.4), 0 10px 30px -8px rgba(44,107,255,.55);
}
.bx-btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(44,107,255,.5), 0 16px 36px -8px rgba(44,107,255,.68);
}
.bx-btn-secondary{
  background:rgba(126,168,255,.08);
  border-color:var(--bx-line-strong);
  color:var(--bx-brand-2);
}
.bx-btn-secondary:hover{
  background:rgba(126,168,255,.14);
  border-color:rgba(126,168,255,.45);
  transform:translateY(-1px);
}
.bx-btn-ghost{ background:transparent; color:var(--bx-t2); padding:0 12px; }
.bx-btn-ghost:hover{ color:var(--bx-brand-2); }
.bx-btn-sm{ height:32px; padding:0 16px; font-size:13px; }
.bx-btn-lg{ height:48px; padding:0 28px; font-size:16px; }

.bx-burger{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--bx-line-strong);
  border-radius:var(--bx-r-btn);
  background:rgba(126,168,255,.06);
  color:var(--bx-t1);
  cursor:pointer;
}
.bx-burger:hover{ background:rgba(126,168,255,.14); }

/* ---------- 抽屉 ---------- */
.bx-drawer-mask{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(3,6,12,.72);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease, visibility .25s ease;
}
.bx-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:90;
  width:86%;
  max-width:360px;
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
  background:linear-gradient(180deg,#0B1220,#070C16);
  border-left:1px solid var(--bx-line);
  transform:translateX(100%);
  transition:transform .28s ease;
}
body.bx-drawer-open{ overflow:hidden; }
body.bx-drawer-open .bx-drawer{ transform:translateX(0); }
body.bx-drawer-open .bx-drawer-mask{ opacity:1; visibility:visible; }
.bx-drawer-head{ display:flex; align-items:center; justify-content:space-between; }
.bx-drawer-nav{ display:flex; flex-direction:column; gap:4px; }
.bx-drawer-nav a{
  display:block;
  padding:12px 14px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  color:var(--bx-t2);
  font-size:15px;
  transition:color .18s ease, background .18s ease, border-color .18s ease;
}
.bx-drawer-nav a:hover{ color:var(--bx-t1); background:rgba(126,168,255,.06); }
.bx-drawer-nav a.is-active{
  color:var(--bx-t1);
  border-left-color:var(--bx-brand-2);
  background:rgba(44,107,255,.12);
}
.bx-drawer-foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--bx-line);
  font-size:13px;
  color:var(--bx-t3);
  display:flex;
  flex-direction:column;
  gap:6px;
}

/* ---------- Hero ---------- */
.bx-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--bx-line);
}
.bx-hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  opacity:.26;
  filter:saturate(.85);
}
.bx-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg, rgba(6,10,18,.94) 6%, rgba(6,10,18,.72) 52%, rgba(6,10,18,.9) 100%);
  pointer-events:none;
}
.bx-hero-inner{
  position:relative;
  z-index:2;
  padding:56px 0 64px;
  max-width:860px;
}
.bx-crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 8px;
  font-size:13px;
  color:var(--bx-t3);
  margin-bottom:18px;
}
.bx-crumb li{ display:inline-flex; align-items:center; gap:8px; }
.bx-crumb li + li::before{ content:"/"; color:var(--bx-t3); }
.bx-crumb a{ color:var(--bx-t2); transition:color .18s ease; }
.bx-crumb a:hover{ color:var(--bx-brand-2); }
.bx-crumb [aria-current="page"]{ color:var(--bx-t1); }

.bx-h1{
  font-size:clamp(32px,4.4vw,50px);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.bx-lede{
  font-size:17px;
  line-height:1.8;
  color:var(--bx-t2);
  max-width:640px;
}
.bx-hero-tags{ display:flex; flex-wrap:wrap; gap:10px; margin-top:26px; }
.bx-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  color:var(--bx-t2);
  background:rgba(126,168,255,.08);
  border:1px solid var(--bx-line);
}
.bx-tag-teal{ color:var(--bx-teal); background:rgba(23,209,192,.12); border-color:rgba(23,209,192,.3); }
.bx-tag-amber{ color:var(--bx-amber); background:rgba(255,176,32,.12); border-color:rgba(255,176,32,.3); }
.bx-tag-violet{ color:var(--bx-violet); background:rgba(154,107,255,.12); border-color:rgba(154,107,255,.3); }
.bx-tag-slate{ color:var(--bx-slate); background:rgba(124,141,168,.14); border-color:rgba(124,141,168,.32); }

/* ---------- 板块 ---------- */
.bx-section{ position:relative; padding:96px 0; }
@media (max-width:1023px){ .bx-section{ padding:72px 0; } }
@media (max-width:640px){ .bx-section{ padding:56px 0; } }

.bx-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--bx-brand-2);
  margin-bottom:14px;
}
.bx-eyebrow::before{
  content:"";
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--bx-brand-2);
  box-shadow:0 0 10px rgba(44,107,255,.9);
}
.bx-h2{
  font-size:clamp(24px,2.8vw,36px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.bx-h3{
  font-size:21px;
  font-weight:600;
  line-height:1.4;
  margin-bottom:12px;
}
.bx-sub{
  font-size:15.5px;
  color:var(--bx-t2);
  max-width:660px;
}

/* ---------- 等级速览条 ---------- */
.bx-statbar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--bx-line);
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-card);
  overflow:hidden;
  box-shadow:var(--bx-shadow);
}
.bx-stat{
  background:linear-gradient(160deg, rgba(24,38,64,.7), rgba(12,20,36,.6));
  padding:24px 22px;
}
.bx-lv-line{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  margin-bottom:16px;
  background:var(--lv, var(--bx-brand-2));
  box-shadow:0 0 10px var(--lv, var(--bx-brand-2));
}
.bx-lv-name{
  font-size:17px;
  font-weight:700;
  margin-bottom:6px;
  color:var(--bx-t1);
}
.bx-lv-desc{ font-size:13.5px; line-height:1.6; color:var(--bx-t3); }
@media (max-width:1023px){ .bx-statbar{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .bx-statbar{ grid-template-columns:1fr; } .bx-stat{ padding:20px; } }

/* ---------- 图文交替 ---------- */
.bx-alt{
  display:grid;
  grid-template-columns:1.02fr 1fr;
  gap:56px;
  align-items:center;
}
.bx-alt + .bx-alt{ margin-top:88px; }
.bx-alt.is-reverse .bx-alt-media{ order:2; }
.bx-alt.is-reverse .bx-alt-text{ order:1; }
.bx-alt-text{ min-width:0; }
.bx-points{
  display:grid;
  gap:12px;
  margin:22px 0 22px;
}
.bx-points li{
  position:relative;
  padding-left:28px;
  font-size:15.5px;
  line-height:1.7;
  color:var(--bx-t2);
}
.bx-points li::before{
  content:"";
  position:absolute;
  left:5px;
  top:10px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--bx-teal);
  box-shadow:0 0 10px rgba(23,209,192,.65);
}
.bx-shot{
  position:relative;
  aspect-ratio:16 / 9;
  border-radius:var(--bx-r-card);
  overflow:hidden;
  border:1px solid var(--bx-line-strong);
  background:var(--bx-bg-1);
  box-shadow:var(--bx-shadow), inset 0 1px 0 rgba(255,255,255,.04);
}
.bx-shot img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.bx-shot:hover img{ transform:scale(1.03); }
.bx-shot::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(6,10,18,.04) 30%, rgba(6,10,18,.55) 100%);
  pointer-events:none;
}
.bx-shot-badge{
  position:absolute;
  left:16px;
  top:16px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--lv, var(--bx-brand-2));
  background:rgba(6,10,18,.66);
  border:1px solid currentColor;
  backdrop-filter:blur(8px);
}
.bx-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--bx-brand-2);
  padding-bottom:2px;
  border-bottom:1px dashed rgba(89,160,255,.42);
  transition:color .18s ease, border-color .18s ease;
}
.bx-more:hover{ color:#fff; border-color:#fff; }
.bx-more span{ transition:transform .18s ease; display:inline-block; }
.bx-more:hover span{ transform:translateX(4px); }

@media (max-width:900px){
  .bx-alt{ grid-template-columns:1fr; gap:32px; }
  .bx-alt.is-reverse .bx-alt-media{ order:0; }
  .bx-alt.is-reverse .bx-alt-text{ order:0; }
  .bx-alt + .bx-alt{ margin-top:64px; }
}

/* ---------- 玻璃卡 ---------- */
.bx-glass{
  position:relative;
  border-radius:var(--bx-r-card);
  border:1px solid var(--bx-line);
  background:linear-gradient(160deg, rgba(24,38,64,.72), rgba(12,20,36,.58));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow), inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s ease, transform .18s ease;
}
.bx-glass::before{
  content:"";
  position:absolute;
  left:18px;
  top:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--bx-brand-2);
  box-shadow:0 0 10px rgba(44,107,255,.85);
}
.bx-glass:hover{ border-color:var(--bx-line-strong); transform:translateY(-2px); }

.bx-check-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
  margin-top:36px;
}
.bx-check-card{ padding:28px 26px; }
.bx-check-card h3{ font-size:19px; font-weight:600; margin-bottom:14px; }
.bx-checks{ display:grid; gap:10px; }
.bx-checks li{
  position:relative;
  padding-left:28px;
  font-size:15px;
  line-height:1.7;
  color:var(--bx-t2);
}
.bx-checks li::before{
  content:"";
  position:absolute;
  left:4px;
  top:7px;
  width:14px;
  height:8px;
  border-left:2px solid var(--bx-teal);
  border-bottom:2px solid var(--bx-teal);
  transform:rotate(-45deg);
}
@media (max-width:900px){ .bx-check-grid{ grid-template-columns:1fr; gap:18px; } }

/* ---------- CTA ---------- */
.bx-cta-wrap{ padding:0 0 96px; }
.bx-cta{
  position:relative;
  overflow:hidden;
  border-radius:var(--bx-r-panel);
  border:1px solid var(--bx-line-strong);
  padding:52px 48px;
  background:
    radial-gradient(620px 280px at 12% -10%, rgba(44,107,255,.22), transparent 68%),
    linear-gradient(160deg, rgba(24,38,64,.82), rgba(12,20,36,.62));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.bx-cta h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.3;
  margin-bottom:10px;
  max-width:560px;
}
.bx-cta p{ font-size:15.5px; color:var(--bx-t2); max-width:600px; }
.bx-cta-actions{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
@media (max-width:640px){
  .bx-cta{ padding:36px 24px; }
  .bx-cta-wrap{ padding-bottom:56px; }
}

/* ---------- 页脚 ---------- */
.bx-footer{
  border-top:1px solid var(--bx-line);
  background:rgba(8,13,24,.62);
  padding-top:64px;
}
.bx-footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.15fr;
  gap:32px;
}
.bx-footer h4{
  font-size:14px;
  font-weight:600;
  color:var(--bx-t1);
  margin-bottom:16px;
}
.bx-footer p{
  font-size:14px;
  line-height:1.8;
  color:var(--bx-t2);
  margin-top:0;
}
.bx-footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.bx-footer-links a{
  font-size:14px;
  color:var(--bx-t2);
  transition:color .18s ease;
}
.bx-footer-links a:hover{ color:var(--bx-brand-2); }
.bx-footer-bottom{
  margin-top:48px;
  border-top:1px solid var(--bx-line);
  padding:20px 0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--bx-t3);
}
.bx-footer-domain{ font-variant-numeric:tabular-nums; color:var(--bx-t2); }
@media (max-width:1023px){
  .bx-footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:640px){
  .bx-footer-grid{ grid-template-columns:1fr; gap:28px; }
  .bx-footer-bottom{ flex-direction:column; align-items:flex-start; gap:8px; }
}

/* ---------- 导航响应式 ---------- */
@media (max-width:1023px){
  .bx-nav{ display:none; }
  .bx-burger{ display:inline-flex; }
  .bx-header-actions .bx-btn-ghost{ display:none; }
}
@media (max-width:640px){
  .bx-header-actions .bx-btn-primary{ display:none; }
  .bx-brand-text{ font-size:18px; }
  .bx-header-inner{ height:64px; }
}

/* roulang page: category2 */
:root{
  --bx-bg:#060A12;
  --bx-bg-1:#0B1220;
  --bx-bg-2:#101A2C;
  --bx-line:rgba(126,168,255,.14);
  --bx-line-strong:rgba(126,168,255,.28);
  --bx-t1:#E9EFFA;
  --bx-t2:#A6B4CC;
  --bx-t3:#6C7B95;
  --bx-brand:#2C6BFF;
  --bx-brand-2:#59A0FF;
  --bx-teal:#17D1C0;
  --bx-amber:#FFB020;
  --bx-violet:#9A6BFF;
  --bx-slate:#7C8DA8;
  --bx-r-btn:10px;
  --bx-r-card:16px;
  --bx-r-panel:24px;
  --bx-shadow:0 12px 32px -12px rgba(0,0,0,.7);
  --bx-max:1220px;
  --bx-font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bx-mono:"Inter","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  font-family:var(--bx-font);
  font-size:16px;
  line-height:1.8;
  color:var(--bx-t2);
  background-color:var(--bx-bg);
  background-image:
    radial-gradient(900px 520px at 6% -8%, rgba(44,107,255,.11), transparent 62%),
    radial-gradient(760px 500px at 98% 12%, rgba(23,209,192,.07), transparent 64%),
    linear-gradient(rgba(126,168,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,168,255,.035) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px, 24px 24px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--bx-brand-2);outline-offset:2px;border-radius:6px;}

.bx-container{width:100%;max-width:var(--bx-max);margin:0 auto;padding-left:32px;padding-right:32px;}
@media (min-width:1440px){ .bx-container{max-width:1320px;} }
@media (max-width:640px){ .bx-container{padding-left:20px;padding-right:20px;} }

.bx-num{font-family:var(--bx-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:-.01em;}

/* ---------- 顶部信息条 ---------- */
.bx-topbar{
  height:36px;
  background:rgba(6,10,18,.92);
  border-bottom:1px solid var(--bx-line);
  font-size:13px;
  position:relative;
  z-index:60;
}
.bx-topbar-inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  white-space:nowrap;
}
.bx-topbar-domain{color:var(--bx-t3);font-family:var(--bx-mono);font-size:12.5px;letter-spacing:.02em;display:inline-flex;align-items:center;gap:8px;}
.bx-topbar-domain::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--bx-teal);box-shadow:0 0 10px rgba(23,209,192,.9);}
.bx-topbar-note{color:var(--bx-t3);overflow:hidden;text-overflow:ellipsis;}
.bx-topbar-links{display:flex;align-items:center;gap:18px;}
.bx-topbar-links a{color:var(--bx-t2);transition:color .18s ease;}
.bx-topbar-links a:hover{color:var(--bx-brand-2);}
.bx-topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid var(--bx-line-strong);border-radius:999px;
  color:var(--bx-brand-2) !important;font-size:12.5px;
  background:rgba(44,107,255,.10);
  transition:background .18s ease,border-color .18s ease;
}
.bx-topbar-btn:hover{background:rgba(44,107,255,.2);border-color:rgba(126,168,255,.5);}
@media (max-width:900px){
  .bx-topbar-inner{overflow-x:auto;justify-content:flex-start;gap:16px;scrollbar-width:none;}
  .bx-topbar-inner::-webkit-scrollbar{display:none;}
  .bx-topbar-note{display:none;}
}

/* ---------- 主导航 ---------- */
.bx-header{
  position:sticky;top:0;z-index:50;
  background:rgba(6,10,18,.55);
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
}
.bx-header.is-scrolled{
  background:rgba(8,13,23,.82);
  border-bottom-color:var(--bx-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.bx-header-inner{
  height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.bx-brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.bx-logo{
  width:28px;height:28px;border-radius:8px;position:relative;flex-shrink:0;
  background:linear-gradient(140deg,var(--bx-brand),var(--bx-teal));
  box-shadow:0 0 0 1px rgba(126,168,255,.35),0 8px 20px -8px rgba(44,107,255,.8);
}
.bx-logo::after{content:"";position:absolute;inset:8px;border-radius:3px;background:rgba(6,10,18,.86);}
.bx-brand-text{font-size:19px;font-weight:700;color:var(--bx-t1);letter-spacing:-.01em;}
.bx-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.bx-nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--bx-t2);transition:color .18s ease;
}
.bx-nav-link:hover{color:var(--bx-t1);}
.bx-nav-link.is-active{color:var(--bx-t1);font-weight:600;}
.bx-nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:12px;height:2px;border-radius:2px;
  background:var(--bx-brand);box-shadow:0 0 12px rgba(44,107,255,.95);
}
.bx-header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

.bx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--bx-r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,filter .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.bx-btn-sm{height:34px;padding:0 16px;font-size:14px;}
.bx-btn-lg{height:48px;padding:0 28px;font-size:16px;}
.bx-btn-primary{
  background:linear-gradient(135deg,var(--bx-brand),var(--bx-brand-2));
  color:#fff;
  box-shadow:0 0 0 1px rgba(44,107,255,.42),0 10px 30px -8px rgba(44,107,255,.6);
}
.bx-btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(89,160,255,.55),0 16px 36px -8px rgba(44,107,255,.78);}
.bx-btn-primary:active{transform:translateY(1px);}
.bx-btn-secondary{
  background:rgba(24,38,64,.55);
  border-color:var(--bx-line-strong);
  color:var(--bx-brand-2);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.bx-btn-secondary:hover{background:rgba(44,107,255,.16);border-color:rgba(126,168,255,.5);transform:translateY(-1px);}
.bx-btn-secondary:active{transform:translateY(1px);}
.bx-btn-ghost{background:transparent;color:var(--bx-t2);padding:0 6px;}
.bx-btn-ghost:hover{color:var(--bx-brand-2);}

.bx-burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--bx-line-strong);border-radius:12px;background:rgba(24,38,64,.55);
  cursor:pointer;color:var(--bx-t1);
}
.bx-burger span{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;position:relative;}
.bx-burger span::before,.bx-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;}
.bx-burger span::before{top:-6px;}
.bx-burger span::after{top:6px;}

@media (max-width:1023px){
  .bx-nav{display:none;}
  .bx-header-actions .bx-btn{display:none;}
  .bx-burger{display:inline-flex;}
}

/* 抽屉 */
.bx-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:400px;z-index:80;
  background:linear-gradient(160deg,rgba(16,26,44,.98),rgba(6,10,18,.98));
  border-left:1px solid var(--bx-line-strong);
  transform:translateX(102%);
  transition:transform .26s ease;
  display:flex;flex-direction:column;
  padding:20px 22px 28px;
  overflow-y:auto;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.bx-drawer.is-open{transform:translateX(0);}
.bx-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.bx-drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--bx-line-strong);
  background:rgba(24,38,64,.6);color:var(--bx-t1);cursor:pointer;font-size:18px;line-height:1;
}
.bx-drawer-note{font-size:13px;color:var(--bx-t3);padding:12px 0 18px;border-bottom:1px solid var(--bx-line);}
.bx-drawer-nav{display:flex;flex-direction:column;padding:12px 0;}
.bx-drawer-nav a{
  position:relative;display:block;padding:14px 12px;font-size:16px;color:var(--bx-t2);
  border-bottom:1px solid rgba(126,168,255,.08);
}
.bx-drawer-nav a.is-active{color:var(--bx-t1);font-weight:600;}
.bx-drawer-nav a.is-active::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--bx-brand);box-shadow:0 0 10px rgba(44,107,255,.9);
}
.bx-drawer-foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:12px;}
.bx-drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,13,.66);z-index:70;opacity:0;pointer-events:none;
  transition:opacity .26s ease;
}
.bx-drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.bx-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--bx-line);
  padding:56px 0 60px;
  min-height:290px;
}
.bx-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.20;
  filter:saturate(.75);
}
.bx-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,10,18,.94) 12%,rgba(6,10,18,.6) 58%,rgba(6,10,18,.88));
}
.bx-hero-inner{position:relative;z-index:2;}
.bx-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--bx-t3);margin-bottom:22px;}
.bx-crumbs li{display:inline-flex;align-items:center;gap:8px;}
.bx-crumbs li+li::before{content:"/";color:rgba(126,168,255,.4);}
.bx-crumbs a{color:var(--bx-t3);transition:color .18s ease;}
.bx-crumbs a:hover{color:var(--bx-brand-2);}
.bx-crumbs [aria-current="page"]{color:var(--bx-t2);}
.bx-hero h1{
  font-size:clamp(32px,4.4vw,54px);
  font-weight:700;line-height:1.15;letter-spacing:-.01em;color:var(--bx-t1);
  margin-bottom:16px;
}
.bx-hero p.bx-hero-sub{max-width:640px;font-size:17px;line-height:1.8;color:var(--bx-t2);}
.bx-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.bx-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

.bx-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(44,107,255,.12);color:var(--bx-brand-2);border:1px solid rgba(44,107,255,.3);
}
.bx-badge-teal{background:rgba(23,209,192,.12);color:var(--bx-teal);border-color:rgba(23,209,192,.3);}
.bx-badge-amber{background:rgba(255,176,32,.12);color:var(--bx-amber);border-color:rgba(255,176,32,.3);}
.bx-badge-violet{background:rgba(154,107,255,.12);color:var(--bx-violet);border-color:rgba(154,107,255,.3);}
.bx-badge-slate{background:rgba(124,141,168,.14);color:#A9B8CE;border-color:rgba(124,141,168,.34);}

/* ---------- 通用区块 ---------- */
.bx-section{padding:96px 0;}
.bx-section-alt{padding:88px 0;}
@media (max-width:1023px){ .bx-section,.bx-section-alt{padding:72px 0;} }
@media (max-width:640px){ .bx-section,.bx-section-alt{padding:56px 0;} }

.bx-sec-head{max-width:720px;margin-bottom:44px;}
.bx-sec-head h2{
  font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--bx-t1);
  margin-bottom:14px;
}
.bx-sec-head p{font-size:16px;color:var(--bx-t2);}
.bx-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--bx-brand-2);text-transform:uppercase;margin-bottom:14px;
}
.bx-eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--bx-brand);box-shadow:0 0 10px rgba(44,107,255,.9);}

/* 卡片 */
.bx-card{
  position:relative;border-radius:var(--bx-r-card);
  border:1px solid var(--bx-line);
  background:linear-gradient(160deg,rgba(24,38,64,.72),rgba(12,20,36,.58));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow),inset 0 1px 0 rgba(255,255,255,.04);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.bx-card::before{
  content:"";position:absolute;left:20px;top:14px;width:18px;height:2px;border-radius:2px;
  background:var(--bx-brand);box-shadow:0 0 10px rgba(44,107,255,.85);
}
.bx-card:hover{border-color:var(--bx-line-strong);transform:translateY(-2px);box-shadow:0 18px 42px -16px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.05);}
.bx-card-body{padding:28px 24px 24px;}

/* ---------- 时间线 ---------- */
.bx-steps{display:flex;flex-direction:column;gap:22px;position:relative;}
.bx-step{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;}
.bx-step::before{
  content:"";position:absolute;left:27px;top:58px;bottom:-24px;width:2px;
  background:linear-gradient(180deg,rgba(44,107,255,.55),rgba(126,168,255,.06));
}
.bx-step:last-child::before{display:none;}
.bx-step-num{
  width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-family:var(--bx-mono);font-weight:700;font-size:18px;color:#fff;
  background:linear-gradient(140deg,rgba(44,107,255,.92),rgba(23,209,192,.5));
  box-shadow:0 0 0 1px rgba(126,168,255,.35),0 10px 26px -10px rgba(44,107,255,.85);
}
.bx-step-body{padding:22px 24px 20px;}
.bx-step-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:10px;}
.bx-step-head h3{font-size:20px;font-weight:600;color:var(--bx-t1);letter-spacing:-.005em;}
.bx-step-body p{font-size:15px;line-height:1.8;color:var(--bx-t2);}
.bx-step-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:16px;padding-top:14px;border-top:1px solid rgba(126,168,255,.1);font-size:13.5px;color:var(--bx-t3);}
.bx-step-meta b{color:var(--bx-t2);font-weight:600;}
@media (max-width:640px){
  .bx-step{grid-template-columns:46px 1fr;gap:16px;}
  .bx-step-num{width:46px;height:46px;border-radius:14px;font-size:16px;}
  .bx-step::before{left:22px;top:48px;}
  .bx-step-body{padding:20px 18px 18px;}
}

/* ---------- 对比表 ---------- */
.bx-table-panel{
  border-radius:var(--bx-r-card);border:1px solid var(--bx-line);
  background:linear-gradient(160deg,rgba(24,38,64,.72),rgba(12,20,36,.58));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow);overflow:hidden;
}
.bx-table{width:100%;border-collapse:collapse;font-size:14.5px;}
.bx-table thead th{
  position:sticky;top:0;z-index:2;
  background:rgba(11,18,32,.94);
  color:var(--bx-t2);font-weight:600;text-align:left;font-size:13.5px;letter-spacing:.02em;
  padding:16px 18px;border-bottom:1px solid var(--bx-line);white-space:nowrap;
}
.bx-table thead th:first-child{color:var(--bx-t3);}
.bx-table tbody td{
  padding:14px 18px;border-bottom:1px solid rgba(126,168,255,.08);color:var(--bx-t2);vertical-align:top;
}
.bx-table tbody tr:last-child td{border-bottom:none;}
.bx-table tbody tr:nth-child(even){background:rgba(126,168,255,.035);}
.bx-table tbody tr:hover{background:rgba(44,107,255,.10);}
.bx-table tbody td:first-child{color:var(--bx-t1);font-weight:600;white-space:nowrap;}
.bx-col-rec{background:rgba(44,107,255,.08);}
.bx-table thead th.bx-col-rec{background:rgba(24,48,104,.72);color:var(--bx-brand-2);box-shadow:inset 0 2px 0 0 var(--bx-brand);}
.bx-th-inner{display:flex;align-items:center;gap:8px;}
.bx-table-panel .bx-table-note{
  padding:14px 18px;font-size:13px;color:var(--bx-t3);border-top:1px solid var(--bx-line);
  background:rgba(6,10,18,.5);
}
@media (max-width:767px){
  .bx-table-panel{background:none;border:none;box-shadow:none;backdrop-filter:none;overflow:visible;}
  .bx-table{display:block;font-size:14px;}
  .bx-table thead{display:none;}
  .bx-table tbody,.bx-table tr,.bx-table td{display:block;width:100%;}
  .bx-table tbody tr{
    margin-bottom:16px;border:1px solid var(--bx-line);border-radius:var(--bx-r-card);
    background:linear-gradient(160deg,rgba(24,38,64,.72),rgba(12,20,36,.58));overflow:hidden;
  }
  .bx-table tbody tr:nth-child(even){background:linear-gradient(160deg,rgba(24,38,64,.72),rgba(12,20,36,.58));}
  .bx-table tbody tr:hover{background:linear-gradient(160deg,rgba(28,45,76,.8),rgba(12,20,36,.6));}
  .bx-table tbody td{
    display:flex;justify-content:space-between;align-items:flex-start;gap:16px;
    padding:12px 16px;border-bottom:1px solid rgba(126,168,255,.08);
  }
  .bx-table tbody td::before{content:attr(data-label);color:var(--bx-t3);font-size:13px;flex-shrink:0;}
  .bx-table tbody td:first-child{
    background:rgba(44,107,255,.10);color:var(--bx-t1);font-size:15px;
  }
  .bx-table tbody td:first-child::before{display:none;}
}

/* ---------- 要点卡 ---------- */
.bx-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
@media (max-width:1023px){ .bx-grid-3{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (max-width:640px){ .bx-grid-3{grid-template-columns:1fr;} }
.bx-point h3{font-size:19px;font-weight:600;color:var(--bx-t1);margin-bottom:10px;}
.bx-point p{font-size:14.5px;color:var(--bx-t2);line-height:1.8;}
.bx-point ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.bx-point li{position:relative;padding-left:18px;font-size:14.5px;color:var(--bx-t2);line-height:1.7;}
.bx-point li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--bx-brand);box-shadow:0 0 8px rgba(44,107,255,.9);
}
.bx-point-teal li::before{background:var(--bx-teal);box-shadow:0 0 8px rgba(23,209,192,.9);}
.bx-point-amber li::before{background:var(--bx-amber);box-shadow:0 0 8px rgba(255,176,32,.9);}

/* ---------- 图文区 ---------- */
.bx-media-block{
  display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;
}
.bx-media-figure{
  border-radius:var(--bx-r-card);overflow:hidden;border:1px solid var(--bx-line);
  background:rgba(16,26,44,.6);aspect-ratio:16/10;
  box-shadow:var(--bx-shadow);
}
.bx-media-figure img{width:100%;height:100%;object-fit:cover;}
@media (max-width:900px){
  .bx-media-block{grid-template-columns:1fr;gap:26px;}
}

/* ---------- FAQ ---------- */
.bx-faq{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.bx-faq-item{
  position:relative;border-radius:var(--bx-r-card);border:1px solid var(--bx-line);
  background:linear-gradient(160deg,rgba(24,38,64,.66),rgba(12,20,36,.55));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  overflow:hidden;transition:border-color .18s ease;
}
.bx-faq-item:hover{border-color:var(--bx-line-strong);}
.bx-faq-item.is-open{border-color:rgba(44,107,255,.42);}
.bx-faq-item.is-open::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--bx-brand);box-shadow:0 0 12px rgba(44,107,255,.9);
}
.bx-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--bx-t1);line-height:1.6;
}
.bx-faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;position:relative;
  border:1px solid var(--bx-line-strong);background:rgba(44,107,255,.12);
  transition:transform .2s ease,background .2s ease;
}
.bx-faq-icon::before,.bx-faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--bx-brand-2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.bx-faq-icon::before{width:12px;height:2px;}
.bx-faq-icon::after{width:2px;height:12px;transition:opacity .2s ease;}
.bx-faq-item.is-open .bx-faq-icon{background:rgba(44,107,255,.24);}
.bx-faq-item.is-open .bx-faq-icon::after{opacity:0;}
.bx-faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.bx-faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--bx-t2);}

/* ---------- CTA ---------- */
.bx-cta{padding:0 0 96px;}
@media (max-width:640px){ .bx-cta{padding-bottom:56px;} }
.bx-cta-panel{
  position:relative;overflow:hidden;border-radius:var(--bx-r-panel);
  border:1px solid rgba(44,107,255,.32);
  background:
    radial-gradient(600px 320px at 12% 0%, rgba(44,107,255,.20), transparent 68%),
    linear-gradient(160deg,rgba(24,38,64,.82),rgba(10,17,30,.72));
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 0 0 1px rgba(44,107,255,.16),0 26px 60px -26px rgba(44,107,255,.55);
  padding:44px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.bx-cta-panel h2{font-size:clamp(22px,2.5vw,30px);font-weight:700;color:var(--bx-t1);line-height:1.3;margin-bottom:10px;}
.bx-cta-panel p{font-size:15.5px;color:var(--bx-t2);max-width:620px;}
.bx-cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (max-width:640px){ .bx-cta-panel{padding:30px 22px;} }

/* ---------- 页脚 ---------- */
.bx-footer{
  border-top:1px solid var(--bx-line);
  background:linear-gradient(180deg,rgba(8,13,23,.7),rgba(6,10,18,.96));
  padding:64px 0 0;
}
.bx-footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:48px;
}
@media (max-width:1023px){ .bx-footer-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:640px){ .bx-footer-grid{grid-template-columns:1fr;} }
.bx-footer-grid h4{font-size:14px;font-weight:600;color:var(--bx-t1);margin-bottom:16px;letter-spacing:.02em;}
.bx-footer-grid p{font-size:14px;line-height:1.85;color:var(--bx-t2);max-width:340px;}
.bx-footer-links{display:flex;flex-direction:column;gap:11px;}
.bx-footer-links a{font-size:14px;color:var(--bx-t2);transition:color .18s ease;}
.bx-footer-links a:hover{color:var(--bx-brand-2);}
.bx-footer .bx-brand{margin-bottom:16px;}
.bx-footer .bx-brand-text{font-size:18px;}
.bx-footer-bottom{
  border-top:1px solid var(--bx-line);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--bx-t3);
}
.bx-footer-domain{font-family:var(--bx-mono);color:var(--bx-t3);letter-spacing:.02em;}
@media (max-width:640px){
  .bx-footer{padding-top:48px;}
  .bx-footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --bx-bg:#060A12;
  --bx-bg-1:#0B1220;
  --bx-bg-2:#101A2C;
  --bx-line:rgba(126,168,255,.14);
  --bx-line-strong:rgba(126,168,255,.28);
  --bx-t1:#E9EFFA;
  --bx-t2:#A6B4CC;
  --bx-t3:#6C7B95;
  --bx-brand:#2C6BFF;
  --bx-brand-2:#59A0FF;
  --bx-teal:#17D1C0;
  --bx-amber:#FFB020;
  --bx-violet:#9A6BFF;
  --bx-slate:#7C8DA8;
  --bx-r-s:10px;
  --bx-r:16px;
  --bx-r-l:24px;
  --bx-shadow:0 12px 32px -12px rgba(0,0,0,.7);
  --bx-glass:linear-gradient(160deg, rgba(24,38,64,.72), rgba(12,20,36,.58));
  --bx-mono:'Inter','SF Mono',ui-monospace,'Roboto Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html,body{overflow-x:hidden}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bx-bg);
  color:var(--bx-t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(900px 620px at 6% -8%, rgba(44,107,255,.10), transparent 62%),
    radial-gradient(760px 520px at 98% 14%, rgba(23,209,192,.07), transparent 64%),
    linear-gradient(rgba(126,168,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,168,255,.035) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.bx-page{position:relative;z-index:1}
.bx-container{width:100%;max-width:1220px;margin:0 auto;padding:0 32px}
@media (min-width:1440px){.bx-container{max-width:1320px}}
@media (max-width:640px){.bx-container{padding:0 20px}}

/* ---------- 顶部信息条 ---------- */
.bx-topbar{
  position:relative;
  z-index:60;
  height:36px;
  background:#050810;
  border-bottom:1px solid var(--bx-line);
  font-size:13px;
  line-height:36px;
}
.bx-topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.bx-topbar-domain{font-family:var(--bx-mono);color:var(--bx-t3);letter-spacing:.03em;white-space:nowrap}
.bx-topbar-note{color:var(--bx-t2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bx-topbar-note i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--bx-teal);margin-right:8px;vertical-align:middle;box-shadow:0 0 0 3px rgba(23,209,192,.18)}
.bx-topbar-actions{display:flex;align-items:center;gap:18px;white-space:nowrap}
.bx-topbar-link{color:var(--bx-t2);transition:color .18s ease}
.bx-topbar-link:hover{color:var(--bx-brand-2)}
.bx-topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid var(--bx-line-strong);border-radius:999px;
  color:var(--bx-t1);font-size:12px;transition:.18s ease;
}
.bx-topbar-btn:hover{border-color:var(--bx-brand-2);color:var(--bx-brand-2);box-shadow:0 0 0 3px rgba(44,107,255,.12)}
@media (max-width:767px){
  .bx-topbar{overflow-x:auto;overflow-y:hidden}
  .bx-topbar-inner{width:max-content;min-width:100%;gap:16px}
  .bx-topbar-note{display:none}
}

/* ---------- 主导航 ---------- */
.bx-header{
  position:sticky;top:0;z-index:50;
  background:rgba(6,10,18,.68);
  border-bottom:1px solid transparent;
  transition:background .25s ease, backdrop-filter .25s ease, border-color .25s ease;
}
.bx-header.is-stuck{
  background:rgba(6,10,18,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--bx-line);
}
.bx-header-inner{display:flex;align-items:center;gap:28px;height:68px}
.bx-brand{display:inline-flex;align-items:center;gap:10px}
.bx-logo{
  position:relative;width:30px;height:30px;border-radius:9px;flex:none;
  background:linear-gradient(140deg,var(--bx-brand),var(--bx-teal));
  box-shadow:0 0 0 1px rgba(89,160,255,.42), 0 10px 22px -10px rgba(44,107,255,.85);
}
.bx-logo::after{
  content:"";position:absolute;inset:9px;border:2px solid rgba(255,255,255,.9);
  border-radius:2px;transform:rotate(45deg);
}
.bx-brand-text{
  font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--bx-t1);white-space:nowrap;
}
.bx-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.bx-nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--bx-t2);transition:color .18s ease;white-space:nowrap;
}
.bx-nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--bx-brand),var(--bx-brand-2));
  box-shadow:0 0 12px rgba(44,107,255,.8);
  opacity:0;transform:scaleX(.4);transition:.2s ease;
}
.bx-nav-link:hover{color:var(--bx-t1)}
.bx-nav-link.is-active{color:var(--bx-t1);font-weight:600}
.bx-nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.bx-header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}

/* ---------- 按钮 ---------- */
.bx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--bx-r-s);font-weight:600;font-size:14px;
  height:40px;padding:0 20px;transition:transform .18s ease, box-shadow .18s ease, filter .18s ease, background .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.bx-btn-sm{height:32px;padding:0 16px;font-size:13px}
.bx-btn-lg{height:48px;padding:0 28px;font-size:15px}
.bx-btn-primary{
  color:#fff;
  background:linear-gradient(135deg,var(--bx-brand),var(--bx-brand-2));
  box-shadow:0 0 0 1px rgba(44,107,255,.42), 0 10px 30px -8px rgba(44,107,255,.55);
}
.bx-btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(89,160,255,.5), 0 16px 38px -8px rgba(44,107,255,.7)}
.bx-btn-secondary{
  color:var(--bx-brand-2);
  background:rgba(16,26,44,.6);
  border:1px solid var(--bx-line-strong);
  backdrop-filter:blur(10px);
}
.bx-btn-secondary:hover{color:var(--bx-t1);border-color:var(--bx-brand-2);transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(44,107,255,.8)}
.bx-btn-ghost{color:var(--bx-t2);padding:0 8px}
.bx-btn-ghost:hover{color:var(--bx-brand-2)}
.bx-btn:active{transform:translateY(1px)}
.bx-btn:focus-visible{outline:2px solid var(--bx-brand-2);outline-offset:2px}
.bx-burger{
  display:none;width:44px;height:44px;border-radius:var(--bx-r-s);
  border:1px solid var(--bx-line-strong);align-items:center;justify-content:center;
}
.bx-burger span{display:block;width:18px;height:2px;background:var(--bx-t1);border-radius:2px;position:relative;transition:.2s ease}
.bx-burger span::before,.bx-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--bx-t1);border-radius:2px;transition:.2s ease}
.bx-burger span::before{top:-6px}
.bx-burger span::after{top:6px}
@media (max-width:1023px){
  .bx-nav{display:none}
  .bx-header-actions .bx-btn-secondary{display:none}
  .bx-burger{display:inline-flex}
}

/* ---------- 抽屉 ---------- */
.bx-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:380px;z-index:90;
  background:linear-gradient(180deg, rgba(11,18,32,.98), rgba(6,10,18,.99));
  border-left:1px solid var(--bx-line-strong);
  transform:translateX(102%);transition:transform .26s ease;
  padding:20px;overflow-y:auto;
}
.bx-drawer.is-open{transform:translateX(0)}
.bx-drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(3,6,12,.7);
  opacity:0;visibility:hidden;transition:.26s ease;
}
.bx-drawer-mask.is-open{opacity:1;visibility:visible}
.bx-drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--bx-line)}
.bx-drawer-close{width:44px;height:44px;border-radius:var(--bx-r-s);border:1px solid var(--bx-line-strong);display:flex;align-items:center;justify-content:center;color:var(--bx-t2)}
.bx-drawer-close:hover{color:var(--bx-t1);border-color:var(--bx-brand-2)}
.bx-drawer-links{display:flex;flex-direction:column;gap:2px;margin:16px 0 20px}
.bx-drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:var(--bx-r-s);
  color:var(--bx-t2);font-size:15px;border-left:2px solid transparent;
}
.bx-drawer-link:hover{background:rgba(44,107,255,.1);color:var(--bx-t1)}
.bx-drawer-link.is-active{color:var(--bx-t1);font-weight:600;border-left-color:var(--bx-brand);background:rgba(44,107,255,.12)}
.bx-drawer-meta{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--bx-t3);border-top:1px solid var(--bx-line);padding-top:16px}

/* ---------- Hero ---------- */
.bx-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--bx-line)}
.bx-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.16;
}
.bx-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(6,10,18,.96) 8%, rgba(6,10,18,.72) 55%, rgba(6,10,18,.94) 100%);
}
.bx-hero-inner{position:relative;z-index:2;padding:52px 0 56px;min-height:260px;display:flex;flex-direction:column;justify-content:center}
.bx-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--bx-t3);margin-bottom:18px}
.bx-crumb li{display:inline-flex;align-items:center;gap:8px}
.bx-crumb li+li::before{content:"/";color:var(--bx-t3);opacity:.7}
.bx-crumb a{color:var(--bx-t2);transition:color .18s ease}
.bx-crumb a:hover{color:var(--bx-brand-2)}
.bx-crumb li[aria-current] {color:var(--bx-t2)}
.bx-chip{
  display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  padding:4px 14px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  color:var(--bx-brand-2);background:rgba(44,107,255,.12);
  border:1px solid rgba(44,107,255,.3);margin-bottom:16px;
}
.bx-hero h1{
  font-size:clamp(30px,3.6vw,44px);font-weight:700;line-height:1.15;
  letter-spacing:-.01em;margin-bottom:14px;
}
.bx-hero-sub{font-size:17px;color:var(--bx-t2);max-width:620px}
.bx-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* ---------- 徽章 ---------- */
.bx-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;font-size:12px;line-height:1.7;
  background:rgba(126,168,255,.12);color:var(--bx-t2);
  border:1px solid rgba(126,168,255,.3);
}
.bx-badge-brand{background:rgba(44,107,255,.14);color:var(--bx-brand-2);border-color:rgba(44,107,255,.34)}
.bx-badge-teal{background:rgba(23,209,192,.12);color:var(--bx-teal);border-color:rgba(23,209,192,.32)}
.bx-badge-amber{background:rgba(255,176,32,.12);color:var(--bx-amber);border-color:rgba(255,176,32,.32)}
.bx-badge-violet{background:rgba(154,107,255,.13);color:var(--bx-violet);border-color:rgba(154,107,255,.32)}

/* ---------- 板块 ---------- */
.bx-section{padding:96px 0}
.bx-section-alt{padding:88px 0;background:linear-gradient(180deg, rgba(11,18,32,.5), rgba(6,10,18,0))}
@media (max-width:1023px){.bx-section,.bx-section-alt{padding:72px 0}}
@media (max-width:639px){.bx-section,.bx-section-alt{padding:56px 0}}
.bx-sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.bx-sec-title{font-size:clamp(24px,2.8vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.bx-sec-desc{font-size:15px;color:var(--bx-t2);max-width:640px;margin-top:12px}
.bx-eyebrow{
  display:inline-block;font-family:var(--bx-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--bx-brand-2);margin-bottom:12px;
}

/* ---------- 卡片 ---------- */
.bx-card{
  position:relative;
  background:var(--bx-glass);
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r);
  padding:26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--bx-shadow), inset 0 1px 0 rgba(255,255,255,.04);
  transition:border-color .18s ease, transform .18s ease, box-shadow .18s ease;
  overflow:hidden;
}
.bx-card::before{
  content:"";position:absolute;top:0;left:0;width:18px;height:2px;border-radius:2px;
  background:var(--bx-brand);box-shadow:0 0 10px rgba(44,107,255,.8);
}
.bx-card:hover{border-color:var(--bx-line-strong);transform:translateY(-2px)}
.bx-card h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:10px}
.bx-card p{font-size:15px;color:var(--bx-t2);line-height:1.8}
.bx-card .bx-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.bx-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media (max-width:1023px){.bx-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:639px){.bx-grid-3{grid-template-columns:1fr}}

/* ---------- 数据条 ---------- */
.bx-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--bx-line);border:1px solid var(--bx-line);border-radius:var(--bx-r);overflow:hidden;
}
.bx-stat{background:rgba(10,17,30,.86);padding:26px 24px}
.bx-stat-num{font-family:var(--bx-mono);font-size:32px;font-weight:700;color:var(--bx-t1);letter-spacing:-.02em;line-height:1.2}
.bx-stat-num em{font-style:normal;font-size:15px;color:var(--bx-brand-2);margin-left:6px;font-weight:600}
.bx-stat-label{font-size:13px;color:var(--bx-t3);margin-top:6px}
@media (max-width:1023px){.bx-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:519px){.bx-stat{padding:20px 18px}.bx-stat-num{font-size:26px}}

/* ---------- 双栏 ---------- */
.bx-split{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:32px;align-items:start}
@media (max-width:1023px){.bx-split{grid-template-columns:1fr;gap:26px}}
.bx-flow{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
@media (max-width:639px){.bx-flow{grid-template-columns:1fr}}
.bx-flow .bx-card:nth-child(1){min-height:236px}
.bx-flow .bx-card:nth-child(2){min-height:196px}
.bx-flow .bx-card:nth-child(3){min-height:204px}
.bx-flow .bx-card:nth-child(4) {min-height:250px}
.bx-flow .bx-card:nth-child(5){min-height:180px;grid-column:span 2}
@media (max-width:639px){.bx-flow .bx-card:nth-child(5){grid-column:span 1}}
.bx-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
@media (max-width:1023px){.bx-aside{position:static;top:auto}}

/* ---------- 列表 ---------- */
.bx-check-list{display:flex;flex-direction:column;gap:14px}
.bx-check-list li{display:flex;gap:12px;font-size:15px;color:var(--bx-t2);line-height:1.75}
.bx-check-list li b{color:var(--bx-t1);font-weight:600;display:block;margin-bottom:2px}
.bx-tick{
  flex:none;width:22px;height:22px;border-radius:7px;margin-top:3px;
  background:rgba(23,209,192,.12);border:1px solid rgba(23,209,192,.34);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--bx-teal);font-size:12px;line-height:1;
}
.bx-side-list{display:flex;flex-direction:column;gap:10px}
.bx-side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:48px;padding:0 14px;border-radius:var(--bx-r-s);
  border:1px solid var(--bx-line);background:rgba(16,26,44,.5);
  font-size:14px;color:var(--bx-t2);transition:.18s ease;
}
.bx-side-list a:hover{border-color:var(--bx-line-strong);color:var(--bx-t1);transform:translateY(-1px)}
.bx-side-list a span:last-child{color:var(--bx-brand-2);font-family:var(--bx-mono)}
.bx-points{display:flex;flex-direction:column;gap:16px}
.bx-point{display:flex;gap:12px;font-size:14px;color:var(--bx-t2);line-height:1.75}
.bx-point i{
  flex:none;width:6px;height:6px;border-radius:50%;background:var(--bx-brand-2);
  margin-top:9px;box-shadow:0 0 0 3px rgba(44,107,255,.16);
}

/* ---------- 图文 ---------- */
.bx-media{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center}
@media (max-width:767px){.bx-media{grid-template-columns:1fr;gap:24px}}
.bx-figure{position:relative;border-radius:var(--bx-r);overflow:hidden;border:1px solid var(--bx-line);background:var(--bx-bg-2)}
.bx-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.bx-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,10,18,0) 45%, rgba(6,10,18,.72) 100%);
}
.bx-figure figcaption{
  position:absolute;left:18px;right:18px;bottom:14px;z-index:2;
  font-size:13px;color:var(--bx-t2);
}

/* ---------- FAQ ---------- */
.bx-faq{display:flex;flex-direction:column;gap:14px;max-width:900px}
.bx-faq-item{
  position:relative;border:1px solid var(--bx-line);border-radius:var(--bx-r);
  background:var(--bx-glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  overflow:hidden;transition:border-color .18s ease;
}
.bx-faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--bx-brand);
  opacity:0;transition:opacity .2s ease;box-shadow:0 0 12px rgba(44,107,255,.9);
}
.bx-faq-item.is-open{border-color:var(--bx-line-strong)}
.bx-faq-item.is-open::before{opacity:1}
.bx-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  text-align:left;padding:20px 24px;font-size:16px;font-weight:600;color:var(--bx-t1);
  min-height:60px;
}
.bx-faq-q:focus-visible{outline:2px solid var(--bx-brand-2);outline-offset:-3px}
.bx-faq-sign{
  flex:none;position:relative;width:22px;height:22px;border-radius:6px;
  border:1px solid var(--bx-line-strong);transition:.2s ease;
}
.bx-faq-sign::before,.bx-faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--bx-brand-2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.bx-faq-sign::before{width:10px;height:2px}
.bx-faq-sign::after{width:2px;height:10px;transition:transform .2s ease, opacity .2s ease}
.bx-faq-item.is-open .bx-faq-sign{border-color:var(--bx-brand-2);background:rgba(44,107,255,.14)}
.bx-faq-item.is-open .bx-faq-sign::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.bx-faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.bx-faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--bx-t2)}

/* ---------- CTA ---------- */
.bx-cta{padding:0 0 96px}
@media (max-width:639px){.bx-cta{padding:0 0 56px}}
.bx-cta-panel{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:40px;border-radius:var(--bx-r-l);
  border:1px solid var(--bx-line-strong);
  background:
    radial-gradient(600px 220px at 12% 0%, rgba(44,107,255,.16), transparent 70%),
    linear-gradient(160deg, rgba(24,38,64,.74), rgba(12,20,36,.6));
  box-shadow:var(--bx-shadow);
}
.bx-cta-panel h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.3;margin-bottom:10px}
.bx-cta-panel p{font-size:15px;color:var(--bx-t2);max-width:620px}
.bx-cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:639px){.bx-cta-panel{padding:26px}}

/* ---------- 页脚 ---------- */
.bx-footer{border-top:1px solid var(--bx-line);background:rgba(5,8,16,.86);padding:64px 0 0}
.bx-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
@media (max-width:1023px){.bx-footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:639px){.bx-footer-grid{grid-template-columns:1fr}}
.bx-footer h4{font-size:14px;font-weight:600;color:var(--bx-t1);margin-bottom:16px}
.bx-footer p{font-size:14px;color:var(--bx-t2);line-height:1.8;max-width:340px}
.bx-footer-links{display:flex;flex-direction:column;gap:10px}
.bx-footer-links a{font-size:14px;color:var(--bx-t2);transition:color .18s ease}
.bx-footer-links a:hover{color:var(--bx-brand-2)}
.bx-footer-bottom{
  margin-top:48px;border-top:1px solid var(--bx-line);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--bx-t3);
}
.bx-footer-domain{font-family:var(--bx-mono);letter-spacing:.03em}
.bx-skip{
  position:absolute;left:-9999px;top:0;background:var(--bx-brand);color:#fff;
  padding:10px 16px;border-radius:0 0 var(--bx-r-s) 0;z-index:200;
}
.bx-skip:focus{left:0}