/* roulang page: index */
:root{
  --bg:#0B0716;
  --bg-2:#150E26;
  --bg-3:#1E1533;
  --primary:#7A3BFF;
  --primary-2:#9C6BFF;
  --primary-soft:rgba(122,59,255,.16);
  --cyan:#23E1D0;
  --lime:#C6FF3D;
  --text:#F2EFFF;
  --text-2:#A79FC4;
  --text-3:#6F6790;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --paper:#FBFAFE;
  --paper-2:#F7F5FF;
  --ink:#1A1428;
  --ink-2:#5A5375;
  --line-light:#E7E2F5;
  --r-card:20px;
  --r-img:16px;
  --r-btn:12px;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --font:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --bs-primary:#7A3BFF;
  --bs-body-bg:#0B0716;
  --bs-body-color:#F2EFFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#C9B8FF;
  --bs-link-hover-color:#C6FF3D;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:var(--font);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:#C9B8FF;text-decoration:none;transition:color .24s ease;}
a:hover{color:var(--lime);}
button{font-family:inherit;}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.25;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.container{max-width:1280px;padding-inline:24px;}
.section{padding-block:96px;}
.section-tight{padding-block:64px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);font-family:var(--mono);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);display:block;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.section-head h2{font-size:32px;line-height:1.3;}
.section-head .lead{color:var(--text-2);font-size:15px;max-width:520px;margin-top:12px;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:15px;font-weight:600;}
.text-link svg{transition:transform .24s ease;}
.text-link:hover svg{transform:translateX(4px);}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(11,7,22,.72);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,padding .3s ease;
}
.site-header.shrunk{background:rgba(11,7,22,.92);border-bottom-color:var(--line);}
.nav-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  min-height:84px;gap:16px;transition:min-height .3s ease;
}
.site-header.shrunk .nav-inner{min-height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:800;font-size:20px;letter-spacing:-.01em;white-space:nowrap;}
.brand:hover{color:var(--text);}
.brand-mark{width:30px;height:30px;flex:none;}
.brand-text{background:linear-gradient(100deg,#F2EFFF 30%,#C6FF3D 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-side{display:flex;align-items:center;gap:28px;}
.nav-left{justify-content:flex-end;}
.nav-right{justify-content:flex-start;}
.nav-link-item{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link-item::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--primary);border-radius:2px;
  transition:width .26s cubic-bezier(.2,.7,.3,1),left .26s cubic-bezier(.2,.7,.3,1);
}
.nav-link-item:hover{color:var(--text);}
.nav-link-item:hover::after{width:100%;left:0;}
.nav-link-item.active{color:var(--text);font-weight:700;}
.nav-link-item.active::after{width:100%;left:0;background:var(--cyan);}
.nav-cta{
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:700;
  background:linear-gradient(120deg,var(--lime),#9BEE2E);color:#141026;
  border:0;transition:transform .24s ease,box-shadow .24s ease;
}
.nav-cta:hover{color:#141026;transform:translateY(-2px);box-shadow:0 0 22px rgba(198,255,61,.35);}
.navbar-toggler{
  position:absolute;right:16px;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);display:flex;align-items:center;justify-content:center;
  color:var(--text);padding:0;
}
.navbar-toggler svg{width:22px;height:22px;}
.toggler-line{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;margin:3px auto;}
.nav-collapse{border-top:1px solid var(--line);background:rgba(11,7,22,.98);}
.nav-collapse .inner{padding:16px 24px 28px;}
.nav-collapse a{
  display:block;line-height:56px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);opacity:0;
}
.nav-collapse.show a{animation:navFade .4s ease forwards;}
.nav-collapse.show a:nth-child(1){animation-delay:.04s;}
.nav-collapse.show a:nth-child(2){animation-delay:.08s;}
.nav-collapse.show a:nth-child(3){animation-delay:.12s;}
.nav-collapse.show a:nth-child(4){animation-delay:.16s;}
.nav-collapse a.active{color:var(--lime);}
@keyframes navFade{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:none;}}

/* 按钮 */
.btn-electric{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:0;
  font-size:16px;font-weight:700;color:#fff;
  background:linear-gradient(120deg,#7A3BFF 0%,#9C6BFF 70%,#23E1D0 160%);
  position:relative;overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.btn-electric::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.35) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .6s ease;
}
.btn-electric:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 26px rgba(122,59,255,.45);}
.btn-electric:hover::before{transform:translateX(120%);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);background:transparent;
  color:var(--text);font-size:16px;font-weight:600;
  transition:border-color .24s ease,background .24s ease,color .24s ease;
}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(35,225,208,.08);color:var(--cyan);}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 34px;border-radius:var(--r-btn);border:0;
  background:linear-gradient(120deg,var(--lime),#9BEE2E);color:#141026;
  font-size:16px;font-weight:800;
  transition:transform .24s ease,box-shadow .24s ease;
}
.btn-lime:hover{color:#141026;transform:translateY(-2px);box-shadow:0 0 26px rgba(198,255,61,.4);}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--text-2);font-size:14px;font-weight:600;
  background:transparent;transition:all .24s ease;
}
.btn-line:hover{border-color:var(--primary);color:var(--text);background:var(--primary-soft);}
a:focus-visible,button:focus-visible,.btn-electric:focus-visible,.btn-ghost:focus-visible,.btn-lime:focus-visible{
  outline:2px solid var(--lime);outline-offset:2px;
}

/* Hero */
.hero{
  position:relative;
  padding-top:168px;padding-bottom:64px;
  background-image:linear-gradient(100deg,rgba(11,7,22,.96) 0%,rgba(11,7,22,.86) 45%,rgba(11,7,22,.72) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(1.5px 1.5px at 12% 24%,rgba(255,255,255,.7),transparent 60%),
    radial-gradient(1.5px 1.5px at 78% 16%,rgba(198,255,61,.75),transparent 60%),
    radial-gradient(1.5px 1.5px at 46% 78%,rgba(35,225,208,.7),transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 62%,rgba(255,255,255,.55),transparent 60%),
    radial-gradient(1.5px 1.5px at 30% 58%,rgba(255,255,255,.45),transparent 60%);
  opacity:.9;
  animation:starDrift 60s linear infinite;
}
@keyframes starDrift{
  0%{transform:translate3d(0,0,0);}
  50%{transform:translate3d(-14px,10px,0);}
  100%{transform:translate3d(0,0,0);}
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-title{font-size:56px;line-height:1.14;margin-bottom:22px;}
.hero-title .line{display:block;overflow:hidden;}
.hero-title .line > span{display:block;transform:translateY(112%);animation:riseUp .78s cubic-bezier(.2,.7,.3,1) forwards;}
.hero-title .line:nth-child(2) > span{animation-delay:.08s;}
.hero-title .hl{color:var(--lime);}
@keyframes riseUp{to{transform:translateY(0);}}
.hero-sub{color:var(--text-2);font-size:17px;max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px;}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);padding-top:26px;gap:16px;
}
.stat-item .num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--text);letter-spacing:.02em;}
.stat-item .num em{font-style:normal;color:var(--cyan);font-size:16px;margin-left:2px;}
.stat-item .lbl{font-size:13px;color:var(--text-3);margin-top:4px;}
.hero-visual{position:relative;}
.hero-visual img{border-radius:24px;border:1px solid var(--line);box-shadow:0 0 0 1px rgba(122,59,255,.14),0 30px 70px rgba(0,0,0,.5);}
.hero-badge{
  position:absolute;left:-18px;bottom:26px;
  background:rgba(21,14,38,.92);border:1px solid var(--line-strong);
  border-radius:16px;padding:14px 18px;display:flex;align-items:center;gap:12px;
  backdrop-filter:blur(8px);
}
.hero-badge .dot{width:10px;height:10px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);}
.hero-badge span{font-size:13px;color:var(--text-2);}
.hero-badge strong{display:block;font-size:15px;color:var(--text);font-family:var(--mono);}

/* 卡片通用 */
.card-dark{
  background:linear-gradient(180deg,rgba(30,21,51,.85),rgba(21,14,38,.9));
  border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
  height:100%;overflow:hidden;
}
.card-dark:hover{transform:translateY(-4px);border-color:rgba(122,59,255,.6);box-shadow:0 0 24px rgba(122,59,255,.22);}
.product-thumb{position:relative;overflow:hidden;border-radius:var(--r-img);aspect-ratio:4/3;background:var(--bg-3);}
.product-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.card-dark:hover .product-thumb img{transform:scale(1.04);}
.badge-pill{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:700;line-height:1.6;
}
.badge-lime{background:var(--lime);color:#141026;}
.badge-outline{border:1px solid var(--line-strong);color:var(--text-2);background:rgba(11,7,22,.6);}
.badge-cyan{border:1px solid rgba(35,225,208,.45);color:var(--cyan);background:rgba(35,225,208,.08);}
.badge-purple{border:1px solid rgba(122,59,255,.5);color:#C9B8FF;background:rgba(122,59,255,.14);}
.thumb-badge{position:absolute;top:12px;left:12px;z-index:2;}
.product-body{padding:20px;}
.product-body h3{font-size:18px;margin-bottom:6px;}
.product-body .sub{font-size:13px;color:var(--text-3);line-height:1.7;min-height:44px;}
.spec-row{
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--mono);font-size:13px;color:var(--text-2);
  border-top:1px dashed var(--line);margin-top:14px;padding-top:12px;
}
.spec-row .price{color:var(--lime);font-weight:700;font-size:16px;}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;}

/* 保障条 */
.assure{
  width:100vw;margin-left:calc(50% - 50vw);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(21,14,38,.7),rgba(30,21,51,.55),rgba(21,14,38,.7));
}
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.assure-item{
  display:flex;align-items:center;gap:14px;padding:24px 20px;
  border-right:1px solid var(--line);
}
.assure-item:last-child{border-right:0;}
.assure-item .idx{font-family:var(--mono);font-size:13px;color:var(--text-3);}
.assure-item .ico{width:22px;height:22px;color:var(--cyan);flex:none;}
.assure-item .txt strong{display:block;font-size:15px;color:var(--text);font-weight:700;}
.assure-item .txt span{font-size:12px;color:var(--text-3);}

/* 评价 */
.review-card{
  background:var(--paper);color:var(--ink);border-radius:var(--r-card);
  padding:28px;height:100%;box-shadow:0 12px 32px rgba(26,20,40,.08);
  display:flex;flex-direction:column;
}
.review-quote{font-family:var(--mono);font-size:44px;line-height:1;color:rgba(26,20,40,.14);margin-bottom:-8px;}
.stars{display:flex;gap:3px;margin-bottom:12px;}
.stars svg{width:16px;height:16px;color:#7A3BFF;}
.stars svg.off{color:#D6D0E8;}
.review-card p{font-size:15px;color:#332C4A;line-height:1.8;flex:1;}
.review-who{display:flex;align-items:center;gap:12px;margin-top:20px;border-top:1px solid var(--line-light);padding-top:16px;}
.avatar{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;color:#fff;flex:none;font-family:var(--mono);}
.av-1{background:linear-gradient(140deg,#7A3BFF,#23E1D0);}
.av-2{background:linear-gradient(140deg,#23E1D0,#0F8E86);}
.av-3{background:linear-gradient(140deg,#5B2BD6,#C6FF3D);}
.review-who strong{display:block;font-size:14px;color:var(--ink);}
.review-who span{font-size:12px;color:var(--ink-2);}
.carousel-indicators{position:static;margin:28px 0 0;}
.carousel-indicators [data-bs-target]{
  width:26px;height:4px;border-radius:99px;background:rgba(255,255,255,.2);
  border:0;opacity:1;margin:0 5px;
}
.carousel-indicators .active{background:var(--cyan);}

/* 价值说明 */
.value-block{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;margin-bottom:88px;}
.value-block:last-child{margin-bottom:0;}
.value-block.reverse{grid-template-columns:5fr 7fr;}
.value-block.reverse .value-media{order:2;}
.value-block.reverse .value-text{order:1;}
.value-media img{border-radius:var(--r-card);border:1px solid var(--line);}
.value-text h3{font-size:26px;margin-bottom:16px;}
.value-text p{color:var(--text-2);font-size:15px;margin-bottom:22px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);padding:9px 0;border-bottom:1px solid var(--line);
}
.check-list li:last-child{border-bottom:0;}
.check-list svg{width:18px;height:18px;color:var(--lime);flex:none;margin-top:5px;}
.metric-row{display:flex;gap:32px;margin-top:24px;flex-wrap:wrap;}
.metric-row div .num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--cyan);}
.metric-row div .lbl{font-size:12px;color:var(--text-3);}

/* CMS 资讯 */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:linear-gradient(180deg,rgba(30,21,51,.85),rgba(21,14,38,.9));
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(35,225,208,.5);box-shadow:0 0 24px rgba(35,225,208,.16);color:inherit;}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-3);position:relative;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;}
.news-body h3{font-size:17px;line-height:1.5;color:var(--text);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body .excerpt{font-size:13px;color:var(--text-3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;}
.news-time{font-family:var(--mono);font-size:12px;color:var(--text-3);margin-top:16px;display:flex;align-items:center;gap:6px;}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:rgba(21,14,38,.5);
}
.empty-state svg{width:40px;height:40px;color:var(--primary-2);margin-bottom:16px;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px;}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.accordion-button{
  background:transparent;color:var(--text);font-size:18px;font-weight:600;
  padding:24px 44px 24px 20px;box-shadow:none!important;border-radius:0!important;
  position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;
  background:var(--primary);transform:scaleY(0);transform-origin:top;transition:transform .24s ease;
}
.accordion-button:not(.collapsed){color:var(--lime);}
.accordion-button:not(.collapsed)::before{transform:scaleY(1);}
.accordion-button::after{
  width:10px;height:10px;background-image:none;border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(45deg);transition:transform .26s ease;margin-top:-6px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:2px;}
.accordion-body{padding:0 44px 26px 20px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#150E26 0%,#1E1533 55%,#251a45 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding-block:80px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.6px 1.6px at 8% 30%,rgba(255,255,255,.7),transparent 60%),
    radial-gradient(1.6px 1.6px at 22% 72%,rgba(198,255,61,.7),transparent 60%),
    radial-gradient(1.6px 1.6px at 64% 22%,rgba(35,225,208,.7),transparent 60%),
    radial-gradient(1.6px 1.6px at 82% 64%,rgba(255,255,255,.5),transparent 60%),
    radial-gradient(1.6px 1.6px at 44% 88%,rgba(255,255,255,.4),transparent 60%),
    radial-gradient(1.6px 1.6px at 92% 12%,rgba(198,255,61,.5),transparent 60%);
  opacity:.85;animation:starDrift 60s linear infinite;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:32px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15px;}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:#090512;padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px;}
.footer-brand .brand{font-size:19px;margin-bottom:16px;}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:300px;}
.footer-col h4{font-size:15px;margin-bottom:20px;color:var(--text);letter-spacing:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--lime);}
.footer-col .info{font-size:14px;color:var(--text-2);display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;}
.footer-col .info svg{width:16px;height:16px;color:var(--cyan);flex:none;margin-top:5px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.socials{display:flex;gap:10px;}
.socials a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:all .24s ease;
}
.socials a:hover{border-color:var(--primary);color:var(--lime);background:var(--primary-soft);}
.socials svg{width:17px;height:17px;}

/* 滚动淡入 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;}
.reveal.in{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1199.98px){
  .hero-grid{gap:40px;}
  .hero-title{font-size:48px;}
  .value-block,.value-block.reverse{grid-template-columns:1fr;gap:32px;margin-bottom:64px;}
  .value-block.reverse .value-media{order:1;}
  .value-block.reverse .value-text{order:2;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:991.98px){
  .section{padding-block:72px;}
  .nav-inner{display:flex;justify-content:center;position:relative;min-height:72px;}
  .brand{font-size:18px;}
  .hero{padding-top:120px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-title{font-size:40px;}
  .hero-title .line > span{transform:translateY(0);animation:none;}
  .hero-visual img{max-height:340px;object-fit:cover;}
  .assure-grid{grid-template-columns:1fr 1fr;}
  .assure-item:nth-child(2){border-right:0;}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-bottom:1px solid var(--line);}
  .section-head h2{font-size:26px;}
  .cta-inner h2{font-size:26px;}
}
@media (max-width:767.98px){
  .review-hide-sm{display:none;}
  .stat-bar{grid-template-columns:1fr 1fr;gap:22px;}
  .hero-actions .btn-electric,.hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:575.98px){
  .container{padding-inline:16px;}
  .section{padding-block:56px;}
  .hero{padding-top:104px;}
  .hero-title{font-size:30px;}
  .hero-sub{font-size:15px;}
  .assure-grid{grid-template-columns:1fr;}
  .assure-item{border-right:0;border-bottom:1px solid var(--line);}
  .assure-item:last-child{border-bottom:0;}
  .accordion-button{font-size:16px;padding:20px 40px 20px 16px;}
  .accordion-body{padding:0 24px 22px 16px;}
  .cta-inner h2{font-size:22px;}
  .section-head h2{font-size:23px;}
  .hero-badge{left:8px;bottom:12px;padding:10px 14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg:#0B0716;
  --surface-1:#150E26;
  --surface-2:#1E1533;
  --primary:#7A3BFF;
  --primary-deep:#5B21D6;
  --accent:#23E1D0;
  --lime:#C6FF3D;
  --text:#F2EFFF;
  --text-2:#A79FC4;
  --text-3:#6F6790;
  --ink:#1A1428;
  --light:#F7F5FF;
  --paper:#FBFAFE;
  --line:rgba(255,255,255,.08);
  --line-light:#E7E2F5;
  --radius-card:20px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow-light:0 12px 32px rgba(26,20,40,.08);
  --sans:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;

  --bs-primary:#7A3BFF;
  --bs-body-bg:#0B0716;
  --bs-body-color:#F2EFFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#23E1D0;
  --bs-link-hover-color:#C6FF3D;
  --bs-font-sans-serif:var(--sans);
  --bs-body-font-family:var(--sans);
  --bs-border-radius:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}

.container,.container-lg,.container-xl,.container-xxl{
  width:100%;max-width:1280px;margin:0 auto;
  padding-left:24px;padding-right:24px;
}
@media (max-width:767.98px){
  .container,.container-lg,.container-xl,.container-xxl{padding-left:16px;padding-right:16px}
}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(11,7,22,.72);
  border-bottom:1px solid transparent;
  transition:background .3s ease,backdrop-filter .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(11,7,22,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.nav-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  height:84px;
  transition:height .3s ease;
}
.site-header.is-scrolled .nav-inner{height:68px}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-right{gap:18px}
.nav-link-item{
  position:relative;display:inline-block;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 2px;
}
.nav-link-item::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--primary);transition:left .26s ease,right .26s ease;
}
.nav-link-item:hover{color:var(--text)}
.nav-link-item:hover::after{left:0;right:0}
.nav-link-item.active{color:var(--text);font-weight:700}
.nav-link-item.active::after{left:0;right:0;background:var(--lime)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  font-size:14px;font-weight:700;color:#141026;
  background:var(--lime);
  border:1px solid var(--lime);
  transition:transform .22s ease,box-shadow .26s ease,background .22s ease;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 22px rgba(198,255,61,.34);color:#141026}
.brand{
  position:absolute;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:10px;
  color:var(--text);white-space:nowrap;
}
.brand-mark{width:26px;height:26px;flex:0 0 26px;border-radius:0}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.02em}
.navbar-toggler{
  border:1px solid var(--line);background:transparent;
  width:44px;height:40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:0;cursor:pointer;
}
.navbar-toggler:focus{box-shadow:none;outline:none}
.toggler-line{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;margin:3px 0;transition:background .2s}
.navbar-toggler:hover .toggler-line{background:var(--lime)}
.nav-collapse{background:rgba(11,7,22,.98);border-top:1px solid var(--line)}
.nav-collapse .inner{padding:6px 24px 22px}
.nav-collapse a{
  display:block;line-height:56px;font-size:16px;font-weight:500;
  color:var(--text-2);border-bottom:1px solid var(--line);
}
.nav-collapse a.active{color:var(--lime);font-weight:700}
.nav-collapse.show a{opacity:0;animation:navFade .34s ease forwards}
.nav-collapse.show a:nth-child(1){animation-delay:.04s}
.nav-collapse.show a:nth-child(2){animation-delay:.08s}
.nav-collapse.show a:nth-child(3){animation-delay:.12s}
.nav-collapse.show a:nth-child(4){animation-delay:.16s}
@keyframes navFade{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
@media (max-width:991.98px){
  .nav-inner{justify-content:flex-end;height:68px}
  .site-header.is-scrolled .nav-inner{height:62px}
  .brand-text{font-size:17px}
  .brand-mark{width:22px;height:22px;flex:0 0 22px}
}

/* ---------- Main offset ---------- */
main{padding-top:84px}
@media (max-width:991.98px){main{padding-top:68px}}

/* ---------- Buttons ---------- */
.btn-e{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  position:relative;overflow:hidden;
  transition:transform .22s ease,box-shadow .26s ease,background .24s ease,border-color .24s ease,color .24s ease;
}
.btn-e-primary{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-deep) 100%);
  color:#fff;
}
.btn-e-primary::after{
  content:"";position:absolute;top:0;left:-60%;width:36%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.28),transparent);
  transform:skewX(-18deg);transition:left .55s ease;
}
.btn-e-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(122,59,255,.38);color:#fff}
.btn-e-primary:hover::after{left:130%}
.btn-e-lime{background:var(--lime);color:#141026;border-color:var(--lime)}
.btn-e-lime:hover{transform:translateY(-2px);box-shadow:0 0 26px rgba(198,255,61,.4);color:#141026}
.btn-e-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.24)}
.btn-e-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-e-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--accent);padding:4px 0;
}
.btn-e-link svg{transition:transform .24s ease}
.btn-e-link:hover{color:var(--lime)}
.btn-e-link:hover svg{transform:translateX(4px)}

/* ---------- Badges / Eyebrow ---------- */
.badge-e{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;line-height:1.5;
}
.badge-lime{background:var(--lime);color:#141026}
.badge-outline{border:1px solid rgba(35,225,208,.42);color:var(--accent);background:rgba(35,225,208,.08)}
.badge-mute{border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.04)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:76px 0 68px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(92deg,rgba(11,7,22,.95) 0%,rgba(11,7,22,.82) 48%,rgba(11,7,22,.58) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{opacity:.55}
.crumbs .current{color:var(--text-2)}
.hero-title{font-size:40px;line-height:1.24;font-weight:900;max-width:760px}
.hero-title .line{display:block;overflow:hidden}
.hero-title .line>span{display:block;transform:translateY(115%);animation:lineUp .78s cubic-bezier(.2,.7,.3,1) forwards}
.hero-title .line:nth-child(2)>span{animation-delay:.12s}
@keyframes lineUp{to{transform:translateY(0)}}
.hero-sub{
  margin-top:20px;max-width:620px;
  font-size:17px;line-height:1.8;color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;margin-top:52px;
  border-top:1px solid var(--line);padding-top:26px;
}
.hero-stats .stat{padding-right:22px;border-right:1px solid var(--line)}
.hero-stats .stat:last-child{border-right:none}
.hero-stats .num{
  font-family:var(--mono);font-size:30px;font-weight:700;
  letter-spacing:.02em;color:var(--text);line-height:1.1;
}
.hero-stats .num em{font-style:normal;font-size:16px;color:var(--accent);margin-left:3px}
.hero-stats .label{font-size:13px;color:var(--text-3);margin-top:8px}
@media (max-width:991.98px){
  .hero-title{font-size:33px}
  .page-hero{padding:56px 0 52px}
}
@media (max-width:767.98px){
  .hero-title{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 0}
  .hero-stats .stat{border-right:none;padding-right:0}
  .hero-stats .stat:nth-child(odd){border-right:1px solid var(--line);padding-right:16px}
  .hero-stats .num{font-size:24px}
}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
@media (max-width:1199.98px){.section{padding:80px 0}}
@media (max-width:991.98px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media (max-width:767.98px){.section{padding:56px 0}.section-tight{padding:48px 0}}
.section-head{margin-bottom:48px;max-width:760px}
.section-head h2{font-size:32px;margin-top:16px}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px}
@media (max-width:991.98px){.section-head h2{font-size:26px}}
@media (max-width:767.98px){.section-head{margin-bottom:32px}.section-head h2{font-size:23px}}

/* ---------- Intro split ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split .media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
}
.split .media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;border-radius:0;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.split .media:hover img{transform:scale(1.04)}
.split .media .tag{
  position:absolute;left:18px;top:18px;
}
.split h2{font-size:30px;margin-bottom:20px}
.split p{color:var(--text-2);margin-bottom:16px}
.plain-list{margin-top:22px;display:grid;gap:14px}
.plain-list li{display:flex;gap:12px;align-items:flex-start;color:var(--text-2);font-size:15px}
.plain-list li .dot{
  flex:0 0 18px;width:18px;height:18px;margin-top:5px;border-radius:50%;
  border:1px solid rgba(35,225,208,.5);display:inline-flex;align-items:center;justify-content:center;
}
.plain-list li .dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
@media (max-width:991.98px){
  .split{grid-template-columns:1fr;gap:32px}
  .split h2{font-size:24px}
}

/* ---------- Gear cards ---------- */
.gear-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.gear-card{
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
  display:flex;flex-direction:column;
}
.gear-card:hover{
  transform:translateY(-4px);
  border-color:rgba(122,59,255,.65);
  box-shadow:0 0 0 1px rgba(122,59,255,.35),0 0 24px rgba(122,59,255,.22);
}
.gear-card .thumb{position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--surface-2)}
.gear-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.gear-card:hover .thumb img{transform:scale(1.04)}
.gear-card .thumb .badge-e{position:absolute;left:14px;top:14px}
.gear-card .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.gear-card h3{font-size:19px;margin-bottom:10px}
.gear-card .desc{font-size:14px;color:var(--text-2);line-height:1.7;flex:1}
.gear-card .spec{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
}
.gear-card .spec .val{font-family:var(--mono);font-size:15px;letter-spacing:.02em;color:var(--accent)}
.gear-card .spec .key{font-size:12px;color:var(--text-3)}
@media (max-width:991.98px){.gear-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575.98px){.gear-grid{grid-template-columns:1fr}}

/* ---------- Spec table ---------- */
.table-shell{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface-1);overflow:hidden;
}
.table-scroll{overflow-x:auto}
.spec-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
.spec-table th,.spec-table td{
  padding:18px 22px;text-align:left;vertical-align:middle;
  border-bottom:1px solid var(--line);
}
.spec-table thead th{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--text-3);
  background:rgba(255,255,255,.03);text-transform:uppercase;
}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table tbody tr{transition:background .22s ease}
.spec-table tbody tr:hover{background:rgba(122,59,255,.09)}
.spec-table td.tier{color:var(--text);font-weight:700}
.spec-table td.mono{font-family:var(--mono);letter-spacing:.02em;color:var(--accent)}
.spec-table td.muted{color:var(--text-2)}
.table-note{padding:16px 22px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);background:rgba(255,255,255,.02)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.step{
  position:relative;padding:32px 26px 30px;
  border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(30,21,51,.9),rgba(21,14,38,.9));
  border:1px solid var(--line);
  transition:border-color .24s ease,transform .24s cubic-bezier(.2,.7,.3,1);
}
.step:hover{border-color:rgba(35,225,208,.45);transform:translateY(-4px)}
.step .idx{
  font-family:var(--mono);font-size:38px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(122,59,255,.85);
  letter-spacing:.02em;
}
.step h3{font-size:19px;margin:18px 0 12px}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.75}
@media (max-width:991.98px){.steps{grid-template-columns:1fr;gap:16px}}

/* ---------- Quotes ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote{
  position:relative;
  background:var(--light);color:var(--ink);
  border-radius:var(--radius-card);padding:30px 26px 26px;
  box-shadow:var(--shadow-light);
}
.quote .mark{
  font-family:var(--mono);font-size:44px;line-height:.7;
  color:var(--primary);opacity:.55;display:block;margin-bottom:14px;
}
.quote p{font-size:15px;line-height:1.8;color:#2C2440}
.quote .who{margin-top:22px;display:flex;align-items:center;gap:12px;border-top:1px solid var(--line-light);padding-top:18px}
.quote .avatar{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:15px;color:#fff;
}
.quote .who .name{font-size:14px;font-weight:700;color:#1A1428}
.quote .who .role{font-size:12px;color:#6F6790}
.stars{display:flex;gap:3px;margin-bottom:16px}
.stars svg{width:15px;height:15px}
@media (max-width:991.98px){.quotes{grid-template-columns:1fr;gap:16px}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);border-radius:16px;
  background:var(--surface-1);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .24s ease;
}
.faq-item:hover{border-color:rgba(122,59,255,.5)}
.faq-item .q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px;background:transparent;border:none;cursor:pointer;
  color:var(--text);font-size:18px;font-weight:600;text-align:left;line-height:1.5;
  position:relative;
}
.faq-item .q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--primary);border-radius:0 3px 3px 0;
  transform:scaleY(0);transform-origin:center;transition:transform .28s ease;
}
.faq-item.open .q::before{transform:scaleY(1)}
.faq-item .q .chev{flex:0 0 22px;transition:transform .3s ease;color:var(--accent)}
.faq-item.open .q .chev{transform:rotate(180deg)}
.faq-item .a{
  max-height:0;overflow:hidden;
  transition:max-height .35s cubic-bezier(.2,.7,.3,1);
}
.faq-item .a .inner{
  padding:0 24px 24px 24px;color:var(--text-2);font-size:15px;line-height:1.85;
}
@media (max-width:767.98px){
  .faq-item .q{font-size:16px;padding:18px 18px}
  .faq-item .a .inner{padding:0 18px 20px 18px}
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#150E26 0%,#1E1533 60%,#241640 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:76px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:-20%;
  background-image:radial-gradient(rgba(242,239,255,.16) 1px,transparent 1px);
  background-size:64px 64px;
  animation:drift 60s linear infinite;
  opacity:.7;
}
@keyframes drift{from{transform:translate3d(0,0,0)}to{transform:translate3d(-64px,-64px,0)}}
.cta-band .container{position:relative;z-index:2}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{font-size:30px;max-width:560px}
.cta-inner p{margin-top:14px;color:var(--text-2);max-width:600px;font-size:15.5px}
@media (max-width:767.98px){.cta-band{padding:56px 0}.cta-inner h2{font-size:23px}}

/* ---------- Back row ---------- */
.back-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  flex-wrap:wrap;padding:32px 0 0;
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- Footer ---------- */
.site-footer{
  background:#0B0716;border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px}
.footer-brand .brand{position:static;transform:none;margin-bottom:18px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.04em;color:var(--text);margin-bottom:20px;font-weight:700}
.footer-col ul{display:grid;gap:12px}
.footer-col ul a{font-size:14px;color:var(--text-3)}
.footer-col ul a:hover{color:var(--accent)}
.footer-col .info{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-3);margin-bottom:14px}
.footer-col .info svg{width:17px;height:17px;flex:0 0 17px;color:var(--accent)}
.socials{display:flex;gap:12px;margin-top:20px}
.socials a{
  width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);transition:border-color .24s ease,color .24s ease,transform .24s ease;
}
.socials a:hover{border-color:var(--primary);color:var(--lime);transform:translateY(-2px)}
.socials svg{width:18px;height:18px}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:52px;padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{font-family:var(--mono);letter-spacing:.02em}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding-top:48px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  .hero-title .line>span{transform:none}
}

/* roulang page: article */
:root{
  --bg:#0B0716;
  --surface-1:#150E26;
  --surface-2:#1E1533;
  --primary:#7A3BFF;
  --primary-soft:rgba(122,59,255,.16);
  --accent:#23E1D0;
  --lime:#C6FF3D;
  --text:#F2EFFF;
  --text-2:#A79FC4;
  --text-3:#6F6790;
  --paper:#FBFAFE;
  --paper-2:#F7F5FF;
  --paper-text:#1A1428;
  --paper-text-2:#544C6E;
  --line:rgba(255,255,255,.08);
  --line-light:#E7E2F5;
  --radius-card:20px;
  --radius-img:16px;
  --radius-btn:12px;
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --shadow-paper:0 12px 32px rgba(26,20,40,.08);
  --bs-primary:#7A3BFF;
  --bs-body-bg:#0B0716;
  --bs-body-color:#F2EFFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#23E1D0;
  --bs-link-hover-color:#C6FF3D;
  --bs-font-sans-serif:var(--sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:-10%;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 18%,rgba(242,239,255,.55),transparent 60%),
    radial-gradient(1.6px 1.6px at 76% 12%,rgba(35,225,208,.5),transparent 60%),
    radial-gradient(1.3px 1.3px at 32% 72%,rgba(198,255,61,.42),transparent 60%),
    radial-gradient(1.5px 1.5px at 88% 66%,rgba(122,59,255,.6),transparent 60%),
    radial-gradient(1.2px 1.2px at 55% 42%,rgba(242,239,255,.35),transparent 60%),
    radial-gradient(1.2px 1.2px at 68% 88%,rgba(35,225,208,.35),transparent 60%);
  animation:starDrift 60s linear infinite;
  opacity:.9;
}
@keyframes starDrift{
  0%{transform:translate3d(0,0,0)}
  50%{transform:translate3d(-18px,12px,0)}
  100%{transform:translate3d(0,0,0)}
}
h1,h2,h3,h4,h5{
  font-family:var(--sans);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.24;
  margin:0;
}
p{margin:0}
a{color:var(--accent);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--lime)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{
  width:100%;
  max-width:1280px;
  padding-left:24px;
  padding-right:24px;
  margin:0 auto;
  position:relative;
  z-index:1;
}
.mono{font-family:var(--mono);letter-spacing:.02em}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(11,7,22,.62);
  backdrop-filter:blur(6px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,padding .3s ease;
}
.site-header.scrolled{
  background:rgba(11,7,22,.86);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:84px;
  transition:min-height .3s ease;
}
.site-header.scrolled .nav-inner{min-height:68px}
.nav-side{display:flex;align-items:center;gap:26px;flex:1}
.nav-left{justify-content:flex-start}
.nav-right{justify-content:flex-end}
.nav-link-item{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-item::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:0;
  height:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width .25s cubic-bezier(.2,.7,.3,1);
  border-radius:2px;
}
.nav-link-item:hover{color:var(--text)}
.nav-link-item:hover::after{width:100%}
.nav-link-item.active{color:var(--text);font-weight:700}
.nav-link-item.active::before{
  content:"";
  position:absolute;
  left:50%;
  top:-6px;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--lime);
  transform:translateX(-50%);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex:0 0 auto;
}
.brand:hover{color:var(--text)}
.brand-mark{width:30px;height:30px;flex:0 0 auto}
.brand-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 18px;
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  color:#150E26;
  background:linear-gradient(120deg,var(--lime) 0%,#9BE86A 60%,var(--accent) 130%);
  border:1px solid rgba(198,255,61,.5);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
}
.nav-cta:hover{
  color:#150E26;
  transform:translateY(-2px);
  box-shadow:0 0 24px rgba(198,255,61,.32);
}
.navbar-toggler{
  background:none;
  border:0;
  padding:6px;
  margin-left:auto;
}
.navbar-toggler span{display:block;width:24px}
.toggler-line{
  display:block;
  height:2px;
  width:24px;
  background:var(--text);
  border-radius:2px;
  margin:5px 0;
}
.nav-collapse{
  border-top:1px solid var(--line);
  background:rgba(11,7,22,.98);
  backdrop-filter:blur(12px);
}
.nav-collapse .inner{padding:8px 24px 22px}
.nav-collapse a{
  display:block;
  line-height:56px;
  font-size:16px;
  font-weight:600;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  opacity:0;
  animation:navFade .35s ease forwards;
}
.nav-collapse a:nth-child(1){animation-delay:.04s}
.nav-collapse a:nth-child(2){animation-delay:.08s}
.nav-collapse a:nth-child(3){animation-delay:.12s}
.nav-collapse a:nth-child(4){animation-delay:.16s}
.nav-collapse a.active{color:var(--lime)}
@keyframes navFade{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- buttons ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  color:#fff;
  background:linear-gradient(120deg,var(--primary) 0%,#5B21E0 55%,#3B10A8 100%);
  border:1px solid rgba(122,59,255,.6);
  transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s ease;
  position:relative;
  overflow:hidden;
}
.btn-main:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 0 26px rgba(122,59,255,.42);
}
.btn-main::after{
  content:"";
  position:absolute;
  inset:0 auto 0 -40%;
  width:40%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
  transform:skewX(-18deg);
  opacity:0;
  transition:opacity .3s ease;
}
.btn-main:hover::after{opacity:1;animation:sweep .8s ease}
@keyframes sweep{from{left:-40%}to{left:110%}}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  color:var(--text);
  border:1px solid rgba(255,255,255,.22);
  background:transparent;
  transition:border-color .22s ease,background .22s ease,transform .22s cubic-bezier(.2,.7,.3,1);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:var(--primary);
  background:var(--primary-soft);
  transform:translateY(-2px);
}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--accent);
}
.btn-text svg{width:16px;height:16px;transition:transform .22s ease}
.btn-text:hover svg{transform:translateX(4px)}

/* ---------- page head ---------- */
.page-head{
  padding:28px 0 0;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--text-3);opacity:.6}
.crumbs .current{
  color:var(--text-2);
  max-width:min(560px,70vw);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- article layout ---------- */
.article-wrap{padding:40px 0 0}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:40px;
}
.article-main{min-width:0}
.article-head{
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:36px 40px;
  margin-bottom:28px;
}
.badge-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:700;
  background:var(--lime);
  color:#1A1428;
  margin-bottom:18px;
}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.28;
  margin-bottom:18px;
  max-width:22em;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:13px;
  color:var(--text-3);
}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item svg{width:15px;height:15px;color:var(--accent);flex:0 0 auto}
.meta-item em{font-style:normal;font-family:var(--mono);color:var(--text-2);letter-spacing:.02em}

/* ---------- paper body ---------- */
.article-body{
  background:var(--paper);
  color:var(--paper-text);
  border-radius:var(--radius-card);
  padding:44px 46px 50px;
  box-shadow:var(--shadow-paper);
  border:1px solid var(--line-light);
  font-size:16px;
  line-height:1.8;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body > *{max-width:800px;margin-left:auto;margin-right:auto}
.article-body p{margin:0 auto 1.2em;color:#2A2340}
.article-body h2{
  font-size:clamp(21px,2.4vw,27px);
  color:var(--paper-text);
  margin:2em auto .8em;
  padding-left:14px;
  border-left:4px solid var(--primary);
  line-height:1.35;
}
.article-body h3{
  font-size:clamp(18px,2vw,21px);
  color:#241C3C;
  margin:1.7em auto .7em;
}
.article-body h4{font-size:17px;margin:1.4em auto .6em;color:#241C3C}
.article-body a{color:#5B21E0;text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#7A3BFF}
.article-body strong{font-weight:800;color:#150E26}
.article-body ul,.article-body ol{margin:0 auto 1.2em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em;padding-left:.2em}
.article-body li::marker{color:var(--primary);font-weight:700}
.article-body blockquote{
  margin:1.6em auto;
  padding:18px 22px;
  background:var(--paper-2);
  border-left:4px solid var(--accent);
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  color:#3A3158;
  font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  max-width:100%;
  height:auto;
  border-radius:var(--radius-img);
  margin:26px auto;
  box-shadow:0 12px 30px rgba(26,20,40,.12);
}
.article-body figure{margin:26px auto}
.article-body figcaption{
  font-size:13px;
  color:var(--paper-text-2);
  text-align:center;
  margin-top:-14px;
  font-family:var(--mono);
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em auto;
  font-size:14.5px;
  background:#fff;
  border-radius:var(--radius-btn);
  overflow:hidden;
  box-shadow:0 0 0 1px var(--line-light);
}
.article-body th{
  background:var(--paper-2);
  text-align:left;
  font-weight:700;
  color:#241C3C;
  font-size:13.5px;
  letter-spacing:.02em;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line-light);
}
.article-body tr:last-child td{border-bottom:0}
.article-body code{
  font-family:var(--mono);
  font-size:13.5px;
  background:var(--paper-2);
  border:1px solid var(--line-light);
  border-radius:6px;
  padding:2px 6px;
  color:#4A2AAF;
}
.article-body pre{
  background:#150E26;
  color:#DCD6FF;
  border-radius:var(--radius-btn);
  padding:18px 20px;
  overflow-x:auto;
  margin:1.6em auto;
  font-family:var(--mono);
  font-size:13.5px;
  line-height:1.7;
  border:1px solid rgba(122,59,255,.35);
}
.article-body pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line-light);
  margin:2.2em auto;
}
@media (min-width:1400px){
  .article-body img{width:calc(100% + 120px);max-width:none;margin-left:-60px;margin-right:-60px}
}

/* ---------- article footer ---------- */
.article-foot{
  margin-top:24px;
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  border:1px solid var(--line);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag:hover{color:var(--text);border-color:var(--primary);background:var(--primary-soft)}

.empty-state{
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:72px 32px;
  text-align:center;
}
.empty-state h1{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.empty-state p{color:var(--text-2);max-width:520px;margin:0 auto 26px}
.empty-icon{
  width:64px;height:64px;
  margin:0 auto 22px;
  border-radius:50%;
  display:grid;place-items:center;
  background:var(--primary-soft);
  border:1px solid rgba(122,59,255,.4);
  color:var(--accent);
}
.empty-icon svg{width:28px;height:28px}

/* ---------- sidebar ---------- */
.article-side{display:none}
.side-card{
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  margin-bottom:24px;
}
.side-card h3{
  font-size:16px;
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:4px;height:16px;
  border-radius:2px;
  background:var(--lime);
}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;
  gap:12px;
  padding:14px 0;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.6;
  transition:color .2s ease;
}
.side-list a:hover{color:var(--text)}
.side-list .idx{
  font-family:var(--mono);
  font-size:13px;
  color:var(--primary);
  font-weight:700;
  flex:0 0 auto;
}
.side-cta{
  background:
    linear-gradient(160deg,rgba(122,59,255,.28),rgba(35,225,208,.14)),
    var(--surface-2);
  border:1px solid rgba(122,59,255,.38);
}
.side-cta p{font-size:14px;color:var(--text-2);margin-bottom:16px}
.side-cta .btn-main{width:100%}

/* ---------- related ---------- */
.related{
  padding:88px 0 0;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:32px;
}
.section-head h2{font-size:clamp(23px,2.6vw,31px)}
.section-head p{color:var(--text-2);font-size:14.5px;margin-top:10px;max-width:600px}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.info-card{
  display:flex;
  flex-direction:column;
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.info-card:hover{
  transform:translateY(-4px);
  border-color:var(--primary);
  box-shadow:0 0 24px rgba(122,59,255,.24);
}
.card-media{
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--surface-2);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s cubic-bezier(.2,.7,.3,1);
}
.info-card:hover .card-media img{transform:scale(1.04)}
.card-body-x{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body-x h3{font-size:17px;line-height:1.45}
.card-body-x h3 a{color:var(--text)}
.card-body-x h3 a:hover{color:var(--accent)}
.card-body-x p{font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-3);
}
.card-meta time{font-family:var(--mono);letter-spacing:.02em}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:96px;
  padding:88px 0;
  position:relative;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(11,7,22,.86),rgba(11,7,22,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-inner h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px;max-width:18em}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:34em}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  border-top:1px solid var(--line);
  background:var(--bg);
  padding-top:72px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:34em}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--accent)}
.footer-col .info{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:12px;
  word-break:break-all;
}
.footer-col .info svg{width:17px;height:17px;color:var(--accent);flex:0 0 auto}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:38px;height:38px;
  border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);
  color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.socials a:hover{border-color:var(--primary);color:var(--lime);transform:translateY(-2px)}
.socials svg{width:18px;height:18px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .mono{letter-spacing:.02em}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .article-body{padding:36px 30px 40px}
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start}
  .article-side{display:block;position:sticky;top:104px}
}
@media (max-width:991.98px){
  .nav-inner{min-height:66px}
  .brand-text{font-size:17px}
  .brand-mark{width:26px;height:26px}
  .container{padding-left:20px;padding-right:20px}
  .article-head{padding:28px 24px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
  .related{padding-top:72px}
  .cta-band{margin-top:72px;padding:68px 0}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px}
  .article-body{padding:28px 20px 32px;font-size:15.5px;border-radius:16px}
  .article-head{border-radius:16px}
  .article-foot{border-radius:16px;padding:20px}
  .article-wrap{padding-top:28px}
  .related{padding-top:56px}
  .cta-band{margin-top:56px;padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .section-head{margin-bottom:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .card-grid{grid-template-columns:1fr}
  .crumbs .current{max-width:60vw}
  .article-head h1{font-size:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  body::before{animation:none}
}

/* roulang page: category2 */
:root{
  --bs-primary:#7A3BFF;
  --bs-primary-rgb:122,59,255;
  --bs-body-bg:#0B0716;
  --bs-body-color:#F2EFFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#23E1D0;
  --bs-link-hover-color:#C6FF3D;
  --bs-body-font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --ink:#0B0716;
  --layer-1:#150E26;
  --layer-2:#1E1533;
  --primary:#7A3BFF;
  --cyan:#23E1D0;
  --lime:#C6FF3D;
  --text:#F2EFFF;
  --text-2:#A79FC4;
  --text-3:#6F6790;
  --line:rgba(255,255,255,.08);
  --paper:#FBFAFE;
  --paper-2:#F7F5FF;
  --ink-text:#1A1428;
  --line-light:#E7E2F5;
  --r-card:20px;
  --r-img:16px;
  --r-btn:12px;
  --font-mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ink);color:var(--text);
  font-family:var(--bs-body-font-family);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .24s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
button{font-family:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
::selection{background:rgba(122,59,255,.5);color:#fff}

.container{width:100%;max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px}
.mono{font-family:var(--font-mono);letter-spacing:.02em}
.text-2{color:var(--text-2)}
.text-3{color:var(--text-3)}

/* ---------- 通用区块 ---------- */
.sec{padding:var(--sec-pad) 0}
.sec-head{max-width:720px;margin-bottom:56px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:16px;
}
.sec-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);border-radius:2px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px}
.sec-head p{color:var(--text-2);font-size:16px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  transition:background .3s ease,box-shadow .3s ease;
  background:linear-gradient(180deg,rgba(11,7,22,.78) 0%,rgba(11,7,22,0) 100%);
}
.site-header.scrolled{
  background:rgba(11,7,22,.86);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;height:88px;transition:height .3s ease}
.site-header.scrolled .nav-inner{height:68px}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-left{flex:1;justify-content:flex-start}
.nav-right{flex:1;justify-content:flex-end}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;flex:0 0 auto}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--text);white-space:nowrap}
.nav-link-item{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 2px;
}
.nav-link-item::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;transition:left .28s ease,right .28s ease;
}
.nav-link-item:hover{color:var(--text)}
.nav-link-item:hover::after{left:0;right:0}
.nav-link-item.active{color:var(--text);font-weight:700}
.nav-link-item.active::before{
  content:"";position:absolute;left:-10px;top:50%;width:5px;height:5px;border-radius:50%;
  background:var(--primary);transform:translateY(-50%);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:999px;
  background:var(--lime);color:#161022;font-size:14px;font-weight:700;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 0 24px rgba(198,255,61,.35);color:#161022}
.navbar-toggler{
  background:transparent;border:1px solid var(--line);border-radius:10px;
  width:44px;height:40px;display:flex;align-items:center;justify-content:center;padding:0;
}
.navbar-toggler span{display:flex;flex-direction:column;gap:5px;width:20px}
.toggler-line{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;transition:transform .3s,opacity .3s}
.nav-collapse{
  position:absolute;left:0;right:0;top:100%;
  background:rgba(11,7,22,.98);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-collapse .inner{padding:16px 24px 28px;display:flex;flex-direction:column}
.nav-collapse .inner a{
  display:flex;align-items:center;height:56px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.nav-collapse .inner a.active{color:var(--text);font-weight:700}
.nav-collapse .inner a.active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);margin-right:10px;
}
.nav-collapse.show .inner a{animation:navFade .38s ease both}
.nav-collapse.show .inner a:nth-child(1){animation-delay:.04s}
.nav-collapse.show .inner a:nth-child(2){animation-delay:.08s}
.nav-collapse.show .inner a:nth-child(3){animation-delay:.12s}
.nav-collapse.show .inner a:nth-child(4){animation-delay:.16s}
@keyframes navFade{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ---------- 按钮 ---------- */
.btn-el{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s,border-color .24s,background .24s,color .24s;
}
.btn-el-primary{
  background:linear-gradient(120deg,#7A3BFF 0%,#9a5bff 60%,#23E1D0 135%);
  color:#fff;box-shadow:0 0 0 1px rgba(122,59,255,.45);
}
.btn-el-primary::after{
  content:"";position:absolute;top:0;bottom:0;left:-60%;width:40%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-18deg);transition:left .6s ease;
}
.btn-el-primary:hover{transform:translateY(-2px);box-shadow:0 0 26px rgba(122,59,255,.5);color:#fff}
.btn-el-primary:hover::after{left:120%}
.btn-el-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--text)}
.btn-el-ghost:hover{border-color:var(--primary);background:rgba(122,59,255,.14);transform:translateY(-2px)}
.btn-el-sm{padding:10px 20px;font-size:14px}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-weight:600;font-size:15px}
.btn-text svg{transition:transform .24s}
.btn-text:hover{color:var(--lime)}
.btn-text:hover svg{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge-el{
  display:inline-flex;align-items:center;gap:5px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.badge-lime{background:var(--lime);color:#161022}
.badge-ghost{border:1px solid rgba(255,255,255,.18);color:var(--text-2)}
.badge-cyan{background:rgba(35,225,208,.13);border:1px solid rgba(35,225,208,.3);color:var(--cyan)}
.badge-primary{background:rgba(122,59,255,.18);border:1px solid rgba(122,59,255,.42);color:#c8aaff}

/* ---------- Hero 全宽大图开篇 ---------- */
.cs-hero{
  position:relative;padding:170px 0 76px;
  background-image:
    linear-gradient(180deg,rgba(11,7,22,.74) 0%,rgba(11,7,22,.88) 58%,#0B0716 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cs-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:26px 26px;opacity:.35;pointer-events:none;
}
.cs-hero .container{position:relative}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{color:var(--text-3);opacity:.7}
.crumb .cur{color:var(--text-2)}
.cs-hero h1{
  font-size:clamp(30px,4.4vw,48px);line-height:1.16;max-width:15em;margin-bottom:22px;
}
.cs-hero h1 em{font-style:normal;color:var(--lime)}
.cs-hero .lead{max-width:660px;font-size:17px;color:var(--text-2);margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;margin-top:56px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.hero-stats .stat{background:rgba(21,14,38,.82);padding:24px 26px}
.hero-stats .num{
  font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--text);
  letter-spacing:.02em;line-height:1.1;display:block;margin-bottom:6px;
}
.hero-stats .num .unit{font-size:18px;color:var(--cyan);margin-left:2px}
.hero-stats .desc{font-size:13px;color:var(--text-3)}
.hero-live{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  padding:6px 14px;border:1px solid rgba(35,225,208,.3);border-radius:999px;
  background:rgba(35,225,208,.08);margin-bottom:24px;
}
.hero-live .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}

/* ---------- 编号纵向列表 ---------- */
.num-list{border-top:1px solid var(--line)}
.num-item{
  display:grid;grid-template-columns:150px minmax(0,1fr);gap:36px;
  padding:40px 0;border-bottom:1px solid var(--line);
  transition:background .3s ease,padding-left .3s ease;
}
.num-item:hover{background:linear-gradient(90deg,rgba(122,59,255,.09),transparent 70%);padding-left:16px}
.num-item .num{
  font-family:var(--font-mono);font-size:46px;font-weight:700;line-height:1;
  color:var(--primary);opacity:.85;letter-spacing:.02em;transition:color .3s,opacity .3s;
}
.num-item:hover .num{color:var(--lime);opacity:1}
.num-item h3{font-size:21px;margin-bottom:12px}
.num-item p{color:var(--text-2);font-size:15.5px;max-width:760px}
.num-item .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- 双列对比 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.compare-col{padding:44px 40px}
.compare-col.old{background:var(--layer-1)}
.compare-col.new{background:linear-gradient(160deg,rgba(122,59,255,.18),rgba(35,225,208,.08)),var(--layer-2)}
.compare-col h3{font-size:19px;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.compare-col .sub{font-size:13px;color:var(--text-3);margin-bottom:26px}
.compare-col ul li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 0;font-size:15px;
  color:var(--text-2);border-bottom:1px dashed rgba(255,255,255,.07);
}
.compare-col ul li:last-child{border-bottom:none}
.compare-col.new ul li{color:var(--text)}
.mark{flex:0 0 auto;width:20px;height:20px;margin-top:5px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.mark.no{background:rgba(255,120,60,.16);color:#ff9d6b}
.mark.yes{background:rgba(198,255,61,.16);color:var(--lime)}
.mark svg{width:11px;height:11px}

/* ---------- 赛程列表 ---------- */
.sched{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--layer-1)}
.sched-row{
  display:grid;grid-template-columns:130px minmax(0,1fr) 170px 110px;
  gap:22px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line);
  transition:background .26s ease;
}
.sched-row:last-child{border-bottom:none}
.sched-row:hover{background:rgba(122,59,255,.09)}
.sched-row .time{font-family:var(--font-mono);font-size:15px;color:var(--cyan);letter-spacing:.02em}
.sched-row .time span{display:block;color:var(--text-3);font-size:12px;letter-spacing:.04em}
.sched-row .match h4{font-size:16px;font-weight:700;margin-bottom:6px}
.sched-row .match p{font-size:13.5px;color:var(--text-3)}
.sched-row .phase{font-size:13px;color:var(--text-2);text-align:left}
.sched-head{
  display:grid;grid-template-columns:130px minmax(0,1fr) 170px 110px;gap:22px;
  padding:16px 28px;background:var(--layer-2);font-size:12px;letter-spacing:.1em;
  color:var(--text-3);text-transform:uppercase;font-weight:700;
}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.card-x{
  background:var(--layer-1);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s,box-shadow .24s;
}
.card-x:hover{
  transform:translateY(-4px);border-color:rgba(122,59,255,.62);
  box-shadow:0 0 26px rgba(122,59,255,.28);
}
.card-x .thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--layer-2)}
.card-x .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.3,1)}
.card-x:hover .thumb img{transform:scale(1.04)}
.card-x .thumb .tag{position:absolute;top:14px;left:14px}
.card-x .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-x h3{font-size:17.5px}
.card-x p{font-size:14.5px;color:var(--text-2)}
.card-x .foot{margin-top:auto;padding-top:8px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-acc{--bs-accordion-bg:transparent;border-radius:var(--r-card);overflow:hidden}
.faq-acc .accordion-item{
  background:var(--layer-1);border:1px solid var(--line);border-radius:0;margin-bottom:12px;
  border-radius:var(--r-card);overflow:hidden;
}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  position:relative;background:transparent;color:var(--text);
  font-size:17px;font-weight:600;padding:22px 60px 22px 28px;
  border:none;box-shadow:none;width:100%;text-align:left;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--text);background:rgba(122,59,255,.1)}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;outline:none}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:28px;top:50%;width:9px;height:9px;margin:0;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  background-image:none;transform:translateY(-70%) rotate(45deg);
  transition:transform .3s ease,border-color .3s;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  transform:translateY(-30%) rotate(-135deg);border-color:var(--lime);
}
.faq-acc .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--primary);border-radius:0 3px 3px 0;
}
.faq-acc .accordion-body{
  padding:0 28px 24px 28px;color:var(--text-2);font-size:15px;line-height:1.8;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;padding:88px 0;overflow:hidden;
  background:linear-gradient(120deg,#150E26 0%,#1E1533 55%,#150E26 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(198,255,61,.35) 1px,transparent 1px);
  background-size:44px 44px;opacity:.35;pointer-events:none;
}
.cta-band .inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:12px;max-width:16em}
.cta-band p{color:var(--text-2);font-size:16px;max-width:640px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);border-top:1px solid var(--line);padding:72px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:48px;padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:340px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:20px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:var(--text-3)}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-col .info{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-3);margin-bottom:14px}
.footer-col .info svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;color:var(--cyan)}
.socials{display:flex;gap:12px;margin-top:20px}
.socials a{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
  transition:border-color .24s,color .24s,transform .24s;
}
.socials a:hover{border-color:var(--primary);color:var(--lime);transform:translateY(-2px)}
.socials svg{width:18px;height:18px}
.footer-bottom{
  border-top:1px solid var(--line);padding:24px 0;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sec-pad:72px}
  .sched-head,.sched-row{grid-template-columns:120px minmax(0,1fr) 150px 92px;gap:18px}
}
@media (max-width:991.98px){
  .nav-inner{justify-content:space-between}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .brand-text{font-size:15px}
  .brand-mark{width:26px;height:26px}
  .navbar-toggler{margin-left:auto}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .compare{grid-template-columns:1fr}
  .compare-col{padding:34px 28px}
  .num-item{grid-template-columns:96px minmax(0,1fr);gap:24px}
  .num-item .num{font-size:38px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .sched-head{display:none}
  .sched-row{grid-template-columns:1fr;gap:12px;padding:22px 22px}
  .sched-row .phase{text-align:left}
  .sched-row .badge-el{justify-self:start}
  .cta-band .inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  :root{--sec-pad:56px}
  .container{padding-left:16px;padding-right:16px}
  .cs-hero{padding:140px 0 56px}
  .cs-hero h1{font-size:28px}
  .cs-hero .lead{font-size:15.5px}
  .hero-stats{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .num-item{grid-template-columns:1fr;gap:12px;padding:30px 0}
  .num-item .num{font-size:32px}
  .faq-acc .accordion-button{font-size:15.5px;padding:18px 52px 18px 20px}
  .faq-acc .accordion-body{padding:0 20px 20px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn-el{width:100%}
  .hero-actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B0716;
  --ink-800:#150E26;
  --ink-700:#1E1533;
  --primary:#7A3BFF;
  --primary-soft:#9B6BFF;
  --cyan:#23E1D0;
  --lime:#C6FF3D;
  --text:#F2EFFF;
  --text-2:#A79FC4;
  --text-3:#6F6790;
  --paper:#F7F5FF;
  --paper-2:#FBFAFE;
  --paper-ink:#1A1428;
  --paper-ink-2:#4A4260;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-light:#E7E2F5;
  --radius-card:20px;
  --radius-img:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-dark:0 0 0 1px var(--line);
  --shadow-glow:0 0 24px rgba(122,59,255,.32);
  --shadow-paper:0 12px 32px rgba(26,20,40,.08);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:96px;
  --sans:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,"Courier New",monospace;

  --bs-primary:#7A3BFF;
  --bs-body-bg:#0B0716;
  --bs-body-color:#F2EFFF;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#23E1D0;
  --bs-link-hover-color:#C6FF3D;
  --bs-font-sans-serif:var(--sans);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--lime);}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:var(--primary);color:#fff;}

.container{max-width:1280px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  padding:18px 0;
  background:transparent;
  transition:padding .3s ease,background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  padding:10px 0;
  background:rgba(11,7,22,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.nav-side,.nav-right{display:flex;align-items:center;gap:28px;}
.nav-side{flex:1 1 0;justify-content:flex-start;}
.nav-right{flex:1 1 0;justify-content:flex-end;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:30px;height:30px;flex:0 0 auto;}
.brand-text{
  font-size:19px;font-weight:900;letter-spacing:-.02em;
  color:var(--text);
  white-space:nowrap;
}
.brand:hover .brand-text{color:#fff;}
.nav-link-item{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link-item::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
  transition:left .28s ease,right .28s ease;
}
.nav-link-item:hover{color:var(--text);}
.nav-link-item:hover::after{left:0;right:0;}
.nav-link-item.active{color:var(--text);font-weight:700;}
.nav-link-item.active::after{left:0;right:0;}
.nav-link-item.active::before{
  content:"";position:absolute;left:-13px;top:50%;width:6px;height:6px;border-radius:50%;
  background:var(--lime);transform:translateY(-50%);
  box-shadow:0 0 10px rgba(198,255,61,.8);
}
.nav-cta{
  display:inline-flex;align-items:center;
  padding:10px 20px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(120deg,var(--primary),var(--primary-soft));
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 8px 24px rgba(122,59,255,.34);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,color .24s ease;
  white-space:nowrap;
}
.nav-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,255,255,.14),0 12px 30px rgba(122,59,255,.5);}
.navbar-toggler{
  border:0;background:transparent;padding:8px;margin-left:auto;
  border-radius:10px;
}
.navbar-toggler:focus{outline:none;box-shadow:0 0 0 2px var(--lime);}
.navbar-toggler>span{display:flex;flex-direction:column;gap:5px;width:24px;}
.toggler-line{display:block;height:2px;background:var(--text);border-radius:2px;transition:.25s;}
.nav-collapse{
  margin-top:12px;
  background:rgba(11,7,22,.98);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.nav-collapse .inner{padding:6px 24px 18px;display:flex;flex-direction:column;}
.nav-collapse .inner a{
  display:block;line-height:56px;
  color:var(--text-2);font-size:16px;font-weight:500;
  border-bottom:1px solid var(--line);
}
.nav-collapse .inner a:last-child{border-bottom:0;}
.nav-collapse .inner a.active{color:var(--lime);font-weight:700;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:180px 0 88px;
  overflow:hidden;
  background-image:linear-gradient(rgba(11,7,22,.78),rgba(11,7,22,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.starfield{position:absolute;inset:0;overflow:hidden;pointer-events:none;}
.starfield::before{
  content:"";position:absolute;inset:-60%;
  background-image:
    radial-gradient(1.6px 1.6px at 20px 30px,rgba(255,255,255,.5),transparent),
    radial-gradient(1.4px 1.4px at 140px 90px,rgba(35,225,208,.5),transparent),
    radial-gradient(1.8px 1.8px at 260px 200px,rgba(255,255,255,.35),transparent),
    radial-gradient(1.2px 1.2px at 360px 60px,rgba(198,255,61,.4),transparent),
    radial-gradient(1.5px 1.5px at 90px 300px,rgba(255,255,255,.3),transparent);
  background-size:420px 420px;
  animation:drift 60s linear infinite;
  opacity:.7;
}
@keyframes drift{to{transform:translate3d(-70px,-50px,0);}}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--cyan);}
.crumbs .sep{color:var(--text-3);opacity:.6;}
.crumbs .current{color:var(--text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--cyan);text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--primary),var(--cyan));}
.page-hero h1{
  font-size:48px;line-height:1.14;font-weight:900;
  max-width:16em;
  margin-bottom:22px;
}
.page-hero h1 .hl{
  background:linear-gradient(100deg,var(--lime),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:17px;color:var(--text-2);line-height:1.8;
  max-width:640px;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-el{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,background .24s ease,border-color .24s ease,color .24s ease;
}
.btn-el:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.btn-solid{
  color:#14091F;
  background:linear-gradient(120deg,var(--lime),#8CF26B 55%,var(--cyan));
  box-shadow:0 10px 26px rgba(198,255,61,.22);
}
.btn-solid:hover{color:#14091F;transform:translateY(-2px);box-shadow:0 14px 34px rgba(198,255,61,.36);}
.btn-ghost{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.02);}
.btn-ghost:hover{color:#fff;border-color:var(--primary);background:rgba(122,59,255,.16);transform:translateY(-2px);}
.btn-text{color:var(--cyan);padding:14px 4px;font-weight:600;}
.btn-text svg{transition:transform .24s ease;}
.btn-text:hover svg{transform:translateX(5px);}

/* ---------- stats strip ---------- */
.stat-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(21,14,38,.6);
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{
  padding:28px 24px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0;}
.stat-num{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--text);line-height:1.1;}
.stat-num span{font-size:16px;color:var(--cyan);margin-left:4px;}
.stat-label{font-size:13px;color:var(--text-3);margin-top:8px;letter-spacing:.04em;}

/* ---------- common section ---------- */
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px;}
.sec-head h2{font-size:34px;line-height:1.22;}
.sec-head .kicker{
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--cyan);
  display:block;margin-bottom:12px;
}
.sec-head p{color:var(--text-2);font-size:15px;max-width:620px;margin-top:12px;}
.sec-head-center{flex-direction:column;align-items:center;text-align:center;}
.sec-head-center p{margin-left:auto;margin-right:auto;}

/* ---------- mosaic ---------- */
.mosaic{display:grid;grid-template-columns:repeat(6,1fr);gap:22px;}
.m-card{
  background:linear-gradient(180deg,var(--ink-800),rgba(11,7,22,.92));
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  display:flex;flex-direction:column;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.m-card:hover{transform:translateY(-4px);border-color:rgba(122,59,255,.6);box-shadow:var(--shadow-glow);}
.span3{grid-column:span 3;}
.span2{grid-column:span 2;}
.span6{grid-column:span 6;}
.m-card h3{font-size:21px;margin-bottom:10px;}
.m-card p{color:var(--text-2);font-size:14.5px;line-height:1.8;}
.m-media{
  border-radius:var(--radius-img);overflow:hidden;
  margin:-6px -6px 20px;
  border:1px solid var(--line);
}
.m-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .4s cubic-bezier(.2,.7,.3,1);}
.m-card:hover .m-media img{transform:scale(1.04);}
.badge-el{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.badge-lime{background:var(--lime);color:#141021;}
.badge-cyan{background:rgba(35,225,208,.14);color:var(--cyan);border:1px solid rgba(35,225,208,.35);}
.badge-violet{background:rgba(122,59,255,.18);color:#C3A8FF;border:1px solid rgba(122,59,255,.42);}
.badge-line{border:1px solid var(--line-strong);color:var(--text-2);}
.card-topline{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}

.rank-list{margin-top:6px;}
.rank-row{
  display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:14px;
  padding:14px 0;border-top:1px solid var(--line);
}
.rank-row:first-child{border-top:0;}
.rank-no{font-family:var(--mono);font-size:16px;color:var(--text-3);}
.rank-row.top .rank-no{color:var(--lime);}
.rank-name{font-size:15px;font-weight:600;color:var(--text);}
.rank-sub{font-size:12.5px;color:var(--text-3);margin-top:2px;}
.rank-val{font-family:var(--mono);font-size:16px;color:var(--cyan);}
.metric-row{display:flex;justify-content:space-between;align-items:baseline;padding:11px 0;border-top:1px dashed var(--line);}
.metric-row:first-of-type{border-top:0;}
.metric-row .k{font-size:14px;color:var(--text-2);}
.metric-row .v{font-family:var(--mono);font-size:15px;color:var(--text);}
.dim-list{margin-top:18px;display:grid;gap:12px;}
.dim-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.dim-list li svg{flex:0 0 auto;margin-top:4px;width:16px;height:16px;color:var(--cyan);}
.m-feature{
  background:linear-gradient(120deg,rgba(30,21,51,.92),rgba(21,14,38,.92)),
    url('/assets/images/coverpic/cover-5.png');
  background-size:cover;background-position:center;
  position:relative;overflow:hidden;
}
.m-feature::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,7,22,.94) 32%,rgba(11,7,22,.42));
}
.m-feature>*{position:relative;z-index:2;}
.m-feature .inner{max-width:560px;}
.m-feature .metric-inline{display:flex;flex-wrap:wrap;gap:28px;margin-top:24px;}
.m-feature .metric-inline div .n{font-family:var(--mono);font-size:24px;color:var(--lime);}
.m-feature .metric-inline div .t{font-size:13px;color:var(--text-3);}

/* ---------- split / alternating ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split+.split{margin-top:80px;}
.split-media{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 0 0 1px rgba(122,59,255,.12);
}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.split-body h3{font-size:28px;line-height:1.28;margin-bottom:18px;}
.split-body p{color:var(--text-2);font-size:15.5px;line-height:1.85;}
.split-body .num-tag{
  font-family:var(--mono);font-size:13px;color:var(--lime);letter-spacing:.14em;
  display:block;margin-bottom:14px;
}
.split-list{margin-top:24px;display:grid;gap:14px;}
.split-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.75;}
.split-list li b{color:var(--text);font-weight:700;}
.split-list li .dot{
  flex:0 0 auto;width:8px;height:8px;border-radius:50%;margin-top:9px;
  background:linear-gradient(120deg,var(--primary),var(--cyan));
}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}

/* ---------- paper panel ---------- */
.paper-panel{
  background:var(--paper);
  color:var(--paper-ink);
  border-radius:28px;
  padding:64px 56px;
  box-shadow:var(--shadow-paper);
}
.paper-panel h2{color:var(--paper-ink);font-size:32px;margin-bottom:16px;}
.paper-panel .paper-lead{color:var(--paper-ink-2);font-size:15.5px;max-width:720px;line-height:1.85;}
.field-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px;}
.field-item{
  background:var(--paper-2);
  border:1px solid var(--line-light);
  border-radius:var(--radius-card);
  padding:24px;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,border-color .24s ease;
}
.field-item:hover{transform:translateY(-4px);border-color:#C9BDF2;box-shadow:var(--shadow-paper);}
.field-item .fi-no{font-family:var(--mono);font-size:13px;color:var(--primary);letter-spacing:.12em;}
.field-item h4{font-size:17px;color:var(--paper-ink);margin:12px 0 10px;}
.field-item p{font-size:14px;color:var(--paper-ink-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:18px;
  font-weight:600;
  padding:26px 52px 26px 0;
  box-shadow:none;
  border-radius:0 !important;
  position:relative;
  transition:color .22s ease,padding-left .24s ease;
}
.accordion-button::after{
  content:"";
  position:absolute;right:8px;top:50%;
  width:11px;height:11px;
  border-right:2px solid var(--cyan);
  border-bottom:2px solid var(--cyan);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .28s ease;
  background-image:none;
  margin:0;
}
.accordion-button:not(.collapsed){
  color:var(--lime);
  padding-left:16px;
}
.accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg);}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--cyan));
}
.accordion-button:focus{box-shadow:none;outline:2px solid rgba(198,255,61,.6);outline-offset:2px;}
.accordion-body{
  padding:0 40px 28px 0;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  padding:88px 0;
  overflow:hidden;
  background:linear-gradient(120deg,#1A1030,#0E0A1C 60%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1.5px 1.5px at 30px 40px,rgba(255,255,255,.42),transparent),
    radial-gradient(1.5px 1.5px at 180px 120px,rgba(122,59,255,.6),transparent),
    radial-gradient(1.5px 1.5px at 300px 60px,rgba(35,225,208,.5),transparent);
  background-size:360px 360px;
  opacity:.85;
  animation:drift 60s linear infinite;
}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{font-size:34px;line-height:1.25;margin-bottom:14px;}
.cta-inner p{color:var(--text-2);font-size:15.5px;max-width:560px;}

/* ---------- footer ---------- */
.site-footer{
  background:#08050F;
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.85;max-width:340px;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:20px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:12px;}
.footer-col ul a{color:var(--text-3);font-size:14px;}
.footer-col ul a:hover{color:var(--cyan);}
.footer-col .info{display:flex;gap:10px;align-items:flex-start;color:var(--text-3);font-size:14px;margin-bottom:14px;}
.footer-col .info svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;color:var(--cyan);}
.socials{display:flex;gap:12px;margin-top:18px;}
.socials a{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:.24s ease;
}
.socials a:hover{color:var(--lime);border-color:rgba(198,255,61,.5);background:rgba(198,255,61,.08);transform:translateY(-2px);}
.socials svg{width:18px;height:18px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:24px 0;
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--cyan);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .page-hero h1{font-size:42px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .mosaic{grid-template-columns:repeat(4,1fr);}
  .span3{grid-column:span 4;}
  .span2{grid-column:span 2;}
  .span6{grid-column:span 4;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .page-hero{padding:150px 0 72px;}
  .page-hero h1{font-size:36px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .split.reverse .split-body{order:0;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(3){border-left:0;}
  .stat-item:nth-child(n+3){border-top:1px solid var(--line);}
  .field-grid{grid-template-columns:repeat(2,1fr);}
  .paper-panel{padding:48px 32px;}
  .cta-inner h2{font-size:28px;}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .page-hero{padding:132px 0 56px;}
  .page-hero h1{font-size:31px;}
  .hero-lead{font-size:15.5px;}
  .sec-head h2{font-size:26px;}
  .mosaic{grid-template-columns:1fr;gap:18px;}
  .span2,.span3,.span6{grid-column:span 1;}
  .m-card{padding:22px;}
  .m-feature{background-position:right center;}
  .split-body h3{font-size:23px;}
  .paper-panel{padding:36px 22px;border-radius:20px;}
  .field-grid{grid-template-columns:1fr;}
  .accordion-button{font-size:16.5px;padding:22px 44px 22px 0;}
  .accordion-body{padding:0 16px 24px 0;}
  .cta-inner h2{font-size:24px;}
  .stat-num{font-size:28px;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .site-footer{padding-top:56px;}
}
@media (max-width:520px){
  .btn-el{width:100%;justify-content:center;}
  .hero-actions{gap:10px;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{border-left:0;border-top:1px solid var(--line);}
  .stat-item:first-child{border-top:0;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}