/* roulang page: index */
:root{
  --c-primary:#2E6BFF;
  --c-primary-soft:rgba(46,107,255,.16);
  --c-accent:#23E0C4;
  --c-warn:#FFB84D;
  --bg-base:#070B14;
  --bg-elev-1:#0C1220;
  --bg-elev-2:#111A2C;
  --text-1:#F2F6FF;
  --text-2:#A8B6D1;
  --text-3:#6E7C99;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --r-lg:22px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(35,224,196,.35),0 10px 30px -8px rgba(35,224,196,.45);
  --font-mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;background:transparent}
a:hover,a:focus{color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.mono{font-family:var(--font-mono);letter-spacing:.02em}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0;position:relative}
.section-tight{padding:64px 0}
.sec-head{margin-bottom:42px;max-width:780px}
.sec-tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--c-accent);text-transform:uppercase;margin-bottom:14px}
.sec-head h2{font-size:32px;line-height:1.36;font-weight:700;letter-spacing:.2px;margin-bottom:12px}
.sec-sub{color:var(--text-2);font-size:15px;line-height:1.8}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:42px}
.sec-head-row .sec-head{margin-bottom:0}
.divider{height:1px;background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.12),rgba(255,255,255,0));border:0}

/* ---------- 玻璃卡 ---------- */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.42),rgba(255,255,255,0));
  pointer-events:none;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#3A78FF 0%,#1B4FD8 100%);
  color:#fff;border-color:rgba(255,255,255,.16);
  box-shadow:0 12px 28px -14px rgba(46,107,255,.95);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(46,107,255,1);color:#fff}
.btn-ghost{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-color:var(--line);color:var(--text-1);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--line-strong);color:#fff;box-shadow:var(--shadow-card)}
.btn-glow{box-shadow:var(--shadow-glow)}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(35,224,196,.55),0 16px 38px -8px rgba(35,224,196,.6)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:active{transform:translateY(0)}
.btn-block{width:100%}
.link-more{color:var(--c-primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;color:#7FA4FF}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12px;line-height:1;background:var(--c-primary-soft);color:#9CB8FF;border:1px solid rgba(46,107,255,.28)}
.tag-accent{background:rgba(35,224,196,.14);color:var(--c-accent);border-color:rgba(35,224,196,.3)}
.tag-plain{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:600;
  background:rgba(7,11,20,.72);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,.05);
  transition:border-color .3s ease,background .3s ease;
}
.site-header.is-scrolled{border-bottom-color:rgba(255,255,255,.12);background:rgba(7,11,20,.9)}
.nav-inner{display:flex;align-items:center;gap:20px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(46,107,255,.9),rgba(35,224,196,.75));
  color:#04101F;font-size:16px;
  box-shadow:0 8px 20px -10px rgba(46,107,255,.9);
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.4px;color:#fff}
.nav-chips{
  display:flex;align-items:center;gap:4px;margin:0 auto;
  background:var(--bg-elev-2);border:1px solid var(--line);
  padding:6px;border-radius:999px;
}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--text-2);border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .12s ease;
  white-space:nowrap;
}
.chip:hover{color:#fff;background:rgba(255,255,255,.05)}
.chip:active{transform:translateY(1px)}
.chip.is-active{background:var(--c-primary-soft);color:#93B3FF;border-color:rgba(46,107,255,.45)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-1);
  align-items:center;justify-content:center;font-size:16px;
}
.mobile-panel{
  display:none;flex-direction:column;gap:6px;padding:16px 24px 24px;
  border-top:1px solid var(--line);background:rgba(12,18,32,.96);
}
.mobile-panel.is-open{display:flex}
.m-link{
  display:flex;align-items:center;height:48px;padding:0 16px;border-radius:12px;
  color:var(--text-2);font-size:15px;border:1px solid transparent;
}
.m-link:hover{background:rgba(255,255,255,.05);color:#fff}
.m-link.is-active{background:var(--c-primary-soft);color:#93B3FF;border-color:rgba(46,107,255,.35)}
.mobile-panel .btn{margin-top:10px;width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;padding:78px 0 92px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.28;
}
.hero-mask{
  position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(680px 420px at 12% 18%,rgba(46,107,255,.20),transparent 66%),
    radial-gradient(560px 380px at 88% 74%,rgba(35,224,196,.14),transparent 68%),
    linear-gradient(180deg,rgba(7,11,20,.55) 0%,rgba(7,11,20,.92) 74%,var(--bg-base) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;z-index:0;opacity:.30;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero .container{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--line);font-size:12.5px;color:var(--text-2);letter-spacing:.06em;margin-bottom:22px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 10px var(--c-accent)}
.hero h1{font-size:44px;line-height:1.28;font-weight:700;letter-spacing:.4px;margin-bottom:20px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,#6E9BFF,#23E0C4);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.85;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-points{display:flex;gap:26px;flex-wrap:wrap}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.hero-points i{color:var(--c-accent);font-size:13px}
.hero-visual{position:relative;margin-top:12px}
.hero-visual img{
  width:100%;height:396px;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.spec-float{
  position:absolute;left:-18px;bottom:-26px;width:262px;padding:18px 20px;
  border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(17,26,44,.94),rgba(12,18,32,.86));
  border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:0 24px 50px -22px rgba(0,0,0,.95);
}
.spec-float .spec-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2);padding:6px 0}
.spec-float .spec-row strong{font-family:var(--font-mono);color:var(--c-accent);font-size:14px;font-weight:600}
.spec-float .spec-title{font-size:12px;letter-spacing:.14em;color:var(--text-3);text-transform:uppercase;margin-bottom:8px}

/* ---------- 数据条 ---------- */
.stats-band{position:relative;padding:0 0 8px}
.stats-card{padding:30px 12px;border-radius:var(--r-lg)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.stat-item{text-align:center;padding:6px 14px;border-right:1px solid rgba(255,255,255,.07)}
.stat-item:last-child{border-right:0}
.stat-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:#fff;line-height:1.2}
.stat-num span{font-size:15px;color:var(--c-accent);margin-left:3px}
.stat-label{font-size:13px;color:var(--text-3);margin-top:4px}

/* ---------- 轮播 ---------- */
.carousel-wrap{position:relative}
.carousel-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:none;-ms-overflow-style:none;
}
.carousel-track::-webkit-scrollbar{display:none}
.slide{flex:0 0 min(430px,84%);scroll-snap-align:start}
.slide-card{border-radius:var(--r-lg);overflow:hidden;height:100%}
.slide-media{height:214px;overflow:hidden;position:relative}
.slide-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.slide-card:hover .slide-media img{transform:scale(1.04)}
.slide-body{padding:22px 24px 26px}
.slide-body h3{font-size:19px;font-weight:700;margin-bottom:8px;line-height:1.5}
.slide-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.carousel-nav{display:flex;align-items:center;justify-content:space-between;margin-top:6px}
.car-arrows{display:flex;gap:10px}
.car-arrow{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);display:flex;align-items:center;justify-content:center;
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.car-arrow:hover{border-color:rgba(46,107,255,.6);color:#fff;transform:translateY(-2px)}
.car-dots{display:flex;gap:8px}
.car-dot{width:22px;height:4px;border-radius:999px;background:rgba(255,255,255,.14);transition:background .25s ease,width .25s ease}
.car-dot.is-active{background:var(--c-primary);width:34px}

/* ---------- 系统要求规格卡 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.spec-card{padding:26px 22px;border-radius:var(--r-md);transition:border-color .3s ease,transform .3s ease}
.spec-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.spec-icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);border:1px solid rgba(46,107,255,.3);color:#8FAEFF;font-size:18px;margin-bottom:16px;
}
.spec-card h3{font-size:17px;font-weight:700;margin-bottom:14px}
.spec-list li{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-size:13.5px;color:var(--text-2);padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.07)}
.spec-list li:last-child{border-bottom:0}
.spec-list li b{font-family:var(--font-mono);color:var(--c-accent);font-weight:600;font-size:14px}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{padding:24px;border-radius:var(--r-md)}
.review-card:nth-child(2){transform:translateY(18px)}
.review-card:nth-child(5){transform:translateY(18px)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#0A1526;
  background:linear-gradient(140deg,#7FA4FF,#23E0C4);
}
.review-name{font-size:14.5px;font-weight:600}
.stars{color:var(--c-warn);font-size:12px;letter-spacing:2px;margin-top:2px}
.review-text{font-size:14px;color:var(--text-2);line-height:1.85}

/* ---------- 下载卡 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.dl-card{padding:26px 22px;border-radius:var(--r-lg);display:flex;flex-direction:column;transition:border-color .3s ease,transform .3s ease}
.dl-card:hover{border-color:var(--line-strong);transform:translateY(-4px)}
.dl-card.is-featured{border-color:rgba(35,224,196,.35);box-shadow:var(--shadow-glow)}
.dl-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.dl-head i{font-size:24px;color:#8FAEFF}
.dl-head .dl-name{font-size:17px;font-weight:700}
.dl-meta{display:flex;flex-direction:column;gap:8px;margin-bottom:22px;flex:1}
.dl-meta div{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}
.dl-meta div b{font-family:var(--font-mono);color:var(--text-2);font-weight:500;font-size:13px}

/* ---------- 最新信息 ---------- */
.news-grid{margin-left:-12px;margin-right:-12px}
.news-cell{padding-left:12px;padding-right:12px;margin-bottom:26px}
.news-card{border-radius:var(--r-lg);height:100%;display:flex;flex-direction:column;transition:border-color .3s ease,transform .3s ease}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.news-thumb{display:block;height:172px;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17px;font-weight:700;line-height:1.6;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:#9CB8FF}
.news-excerpt{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3);border-top:1px solid rgba(255,255,255,.07);padding-top:14px}
.news-meta .link-more{margin-left:auto;font-size:13px}
.empty-state{padding:64px 24px;text-align:center;border-radius:var(--r-lg)}
.empty-state i{font-size:32px;color:var(--text-3);margin-bottom:14px;display:block}
.empty-state p{font-size:14.5px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{border-radius:var(--r-md);overflow:hidden;transition:border-color .3s ease}
.faq-item.is-open{border-color:rgba(46,107,255,.4)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 22px;text-align:left;font-size:15.5px;font-weight:600;color:var(--text-1);
}
.faq-q i{color:var(--text-3);font-size:14px;transition:transform .3s ease,color .3s ease;flex-shrink:0}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--c-accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 20px;font-size:14px;color:var(--text-2);line-height:1.9;border-top:1px solid rgba(255,255,255,.06);padding-top:16px;margin:0 22px 20px;padding-left:0;padding-right:0;background:transparent}

/* ---------- CTA 带 ---------- */
.cta-band{padding:0 0 88px}
.cta-card{
  padding:46px 48px;border-radius:var(--r-lg);display:flex;align-items:center;gap:32px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(46,107,255,.16),rgba(35,224,196,.08) 62%,rgba(255,255,255,.02));
  border:1px solid rgba(46,107,255,.28);
}
.cta-card h2{font-size:26px;font-weight:700;line-height:1.4;margin-bottom:8px;flex:1 1 420px}
.cta-card p{color:var(--text-2);font-size:14.5px;margin-top:6px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid rgba(255,255,255,.07);background:var(--bg-elev-1);padding:62px 0 0}
.footer-grid{margin-bottom:44px}
.footer-col{padding-left:12px;padding-right:12px;margin-bottom:34px}
.footer-desc{font-size:13.5px;color:var(--text-3);line-height:1.9;margin-top:16px;max-width:320px}
.footer-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);text-transform:uppercase;margin-bottom:18px}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .22s ease}
.footer-links a:hover{color:var(--c-primary)}
.footer-links .mono{font-size:13.5px;color:var(--text-3)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .review-card:nth-child(2),.review-card:nth-child(5){transform:none}
  .nav-chips{display:none}
  .nav-toggle{display:flex}
  .nav-inner{justify-content:space-between}
  .nav-actions .btn-sm{display:none}
}
@media screen and (max-width:991px){
  .section{padding:64px 0}
  .hero{padding:56px 0 72px}
  .hero h1{font-size:34px}
  .hero-visual img{height:320px}
  .spec-float{position:static;width:100%;margin-top:18px}
  .stat-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.07);padding:12px 0}
  .stat-item:last-child{border-bottom:0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:0}
  .cta-card{padding:34px 26px}
  .cta-card h2{font-size:22px}
}
@media screen and (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .sec-head h2{font-size:24px}
  .sec-head-row{margin-bottom:30px}
  .hero-actions .btn{width:100%}
  .slide{flex:0 0 88%}
  .spec-grid,.dl-grid,.review-grid{grid-template-columns:1fr}
  .hero-visual img{height:230px}
  .news-grid{margin-left:0;margin-right:0}
  .news-cell{padding-left:0;padding-right:0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{justify-content:flex-start}
}
@media screen and (max-width:519px){
  .brand-name{font-size:16px}
  .hero-points{gap:14px;flex-direction:column}
  .stat-num{font-size:24px}
  .faq-q{font-size:14.5px;padding:14px 16px}
  .faq-a-inner{margin:0 16px 18px}
}

/* roulang page: article */
:root{
  --c-primary:#2E6BFF;
  --c-primary-soft:rgba(46,107,255,.16);
  --c-accent:#23E0C4;
  --c-warn:#FFB84D;
  --bg-base:#070B14;
  --bg-elev-1:#0C1220;
  --bg-elev-2:#111A2C;
  --txt:#F2F6FF;
  --txt-2:#A8B6D1;
  --txt-3:#6E7C99;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --radius:18px;
  --radius-lg:22px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(35,224,196,.35),0 10px 30px -8px rgba(35,224,196,.45);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--txt);
  background:var(--bg-base);
  background-image:
    radial-gradient(900px 460px at 12% -6%, rgba(46,107,255,.16), transparent 62%),
    radial-gradient(760px 420px at 96% 4%, rgba(35,224,196,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:14px;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:#6f9bff;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}
.mono{font-family:var(--mono);letter-spacing:.02em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}
.glass{
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
}
section{position:relative;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:22px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--txt);flex:0 0 auto;}
.brand:hover{color:var(--txt);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),#123c9e);
  color:#fff;font-size:15px;box-shadow:0 8px 20px -10px rgba(46,107,255,.9);
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;}
.nav-chips{
  display:flex;align-items:center;gap:6px;padding:6px;margin:0 auto;
  background:var(--bg-elev-2);border:1px solid var(--line);border-radius:999px;
}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:999px;font-size:14px;color:var(--txt-2);
  white-space:nowrap;transition:all .25s ease;
}
.chip:hover{color:var(--txt);background:rgba(255,255,255,.05);}
.chip.is-active{
  background:var(--c-primary-soft);color:#9dbcff;
  border:1px solid rgba(46,107,255,.45);
}
.chip:active{transform:translateY(1px);}
.header-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;
  background:var(--bg-elev-2);border:1px solid var(--line);color:var(--txt);cursor:pointer;font-size:16px;
}
.nav-toggle:hover{border-color:var(--line-strong);}
.mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(12,18,32,.96);}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 22px;color:var(--txt-2);
  border-bottom:1px solid rgba(255,255,255,.06);font-size:15px;
}
.mobile-panel a.is-active{color:#9dbcff;background:var(--c-primary-soft);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:46px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .3s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),#1b4fd0);color:#fff;box-shadow:0 14px 30px -16px rgba(46,107,255,.95);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(46,107,255,1);}
.btn-glow{
  background:linear-gradient(135deg,rgba(35,224,196,.94),rgba(46,107,255,.92));
  color:#04121a;font-weight:700;box-shadow:var(--shadow-glow);
}
.btn-glow:hover{color:#04121a;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(35,224,196,.5),0 16px 38px -10px rgba(35,224,196,.6);}
.btn-ghost{background:rgba(255,255,255,.05);border-color:var(--line-strong);color:var(--txt);}
.btn-ghost:hover{color:var(--txt);border-color:rgba(46,107,255,.6);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}

/* ---------- 文章布局 ---------- */
.article-shell{padding:34px 0 84px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:20px;}
.crumbs a{color:var(--txt-3);}
.crumbs a:hover{color:#9dbcff;}
.crumbs .sep{color:rgba(255,255,255,.22);}
.crumbs .now{color:var(--txt-2);max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:32px;justify-content:center;align-items:start;}
.article-card{padding:40px 44px 44px;border-radius:var(--radius-lg);}
.article-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:28px;}
.article-head h1{font-size:36px;line-height:1.42;margin:0 0 18px;font-weight:700;letter-spacing:-.01em;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--txt-3);}
.chip-cat{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;font-size:12px;
  background:var(--c-primary-soft);color:#9dbcff;border:1px solid rgba(46,107,255,.32);
}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;font-size:12px;
  background:rgba(35,224,196,.13);color:var(--c-accent);border:1px solid rgba(35,224,196,.3);
}
.dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22);}

.article-body{font-size:16px;line-height:1.85;color:var(--txt-2);}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:26px;line-height:1.5;color:var(--txt);margin:42px 0 16px;font-weight:700;
  padding-left:14px;border-left:3px solid var(--c-primary);
}
.article-body h3{font-size:20px;color:var(--txt);margin:30px 0 12px;font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;color:var(--txt-2);}
.article-body li{margin-bottom:10px;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-accent);font-family:var(--mono);}
.article-body blockquote{
  margin:24px 0;padding:14px 20px;border-left:2px solid var(--c-primary);
  background:rgba(46,107,255,.07);border-radius:0 14px 14px 0;color:var(--txt);
}
.article-body code{
  font-family:var(--mono);font-size:14px;background:var(--bg-elev-2);
  border:1px solid var(--line);border-radius:6px;padding:2px 7px;color:#9dbcff;
}
.article-body img{margin:24px 0;border:1px solid var(--line);}
.article-body a{border-bottom:1px solid rgba(46,107,255,.4);}
.article-body a:hover{border-bottom-color:#6f9bff;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-elev-2);color:var(--txt);font-weight:600;}

.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--radius);
  background:rgba(255,255,255,.03);
}
.empty-state i{font-size:30px;color:var(--c-primary);margin-bottom:14px;display:block;}
.empty-state p{color:var(--txt-2);margin:0 0 20px;}

.article-foot{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{padding:22px 22px 24px;}
.side-title{font-size:15px;font-weight:700;color:var(--txt);margin:0 0 14px;display:flex;align-items:center;gap:8px;}
.side-title i{color:var(--c-accent);font-size:13px;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:14px;}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{color:var(--txt-2);}
.side-list a:hover{color:#9dbcff;}
.side-meta{display:flex;justify-content:space-between;font-size:12.5px;color:var(--txt-3);font-family:var(--mono);}
.side-note{font-size:13.5px;color:var(--txt-3);line-height:1.8;margin:0;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 20px;}
.sec-head{margin-bottom:26px;}
.sec-head h2{font-size:26px;margin:0 0 8px;font-weight:700;}
.sec-head p{margin:0;color:var(--txt-3);font-size:14.5px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-lg);
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 24px 48px -22px rgba(0,0,0,.9);}
.post-thumb{position:relative;overflow:hidden;border-radius:6px 6px 0 0;}
.post-thumb img{width:100%;height:168px;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:17px;line-height:1.6;margin:0;font-weight:600;color:var(--txt);}
.post-body p{margin:0;font-size:14px;color:var(--txt-3);line-height:1.75;}
.post-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--txt-3);margin-top:auto;}
.post-foot a{font-size:13px;}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 88px;}
.cta-inner{
  padding:36px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg, rgba(46,107,255,.18), rgba(35,224,196,.10));
  border:1px solid rgba(46,107,255,.28);
  backdrop-filter:blur(14px);
}
.cta-inner h2{margin:0 0 8px;font-size:24px;font-weight:700;}
.cta-inner p{margin:0;color:var(--txt-2);font-size:14.5px;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(12,18,32,.7);padding:64px 0 26px;}
.footer-grid{margin-left:-14px;margin-right:-14px;}
.footer-col{padding:0 14px 26px;float:none;}
.footer-col{display:block;}
.footer-desc{color:var(--txt-3);font-size:14px;line-height:1.85;margin:16px 0 0;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;color:var(--txt);margin-bottom:14px;}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:10px;font-size:14px;color:var(--txt-3);}
.footer-links a{color:var(--txt-3);}
.footer-links a:hover{color:#9dbcff;}
.footer-bottom{
  margin-top:24px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--txt-3);
}

@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:26px;}
}
@media (max-width:991px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-card{padding:30px 26px 34px;}
  .article-head h1{font-size:30px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .header-inner{flex-wrap:wrap;min-height:64px;gap:12px;padding:10px 0;}
  .nav-chips{
    order:3;width:100%;margin:0;border-radius:14px;overflow-x:auto;flex-wrap:nowrap;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-chips::-webkit-scrollbar{display:none;}
  .chip{padding:8px 14px;font-size:13.5px;}
  .nav-toggle{display:inline-flex;}
  .header-right .btn{display:none;}
  .article-shell{padding:24px 0 60px;}
  .article-card{padding:24px 20px 28px;border-radius:var(--radius);}
  .article-head h1{font-size:24px;}
  .article-head{padding-bottom:18px;margin-bottom:22px;}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .crumbs .now{max-width:200px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-inner{padding:26px 22px;}
  .cta-inner h2{font-size:20px;}
  .cta-inner .btn{width:100%;}
  .article-foot .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-name{font-size:16px;}
  .article-body h2{font-size:19px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#2E6BFF;
  --c-primary-soft:rgba(46,107,255,.16);
  --c-primary-line:rgba(46,107,255,.48);
  --c-accent:#23E0C4;
  --c-warn:#FFB84D;
  --bg-base:#070B14;
  --bg-elev-1:#0C1220;
  --bg-elev-2:#111A2C;
  --text-1:#F2F6FF;
  --text-2:#A8B6D1;
  --text-3:#6E7C99;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --radius-sm:10px;
  --radius:18px;
  --radius-lg:22px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(35,224,196,.35), 0 10px 30px -8px rgba(35,224,196,.45);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:14px;object-fit:cover;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--c-accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px;line-height:1.35;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px;}
.mono{font-family:var(--font-mono);letter-spacing:.4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:88px 0;position:relative;}
.section-alt{background:var(--bg-elev-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:32px;margin-bottom:10px;}
.section-head p{color:var(--text-2);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--c-accent);background:rgba(35,224,196,.10);
  border:1px solid rgba(35,224,196,.28);border-radius:999px;
  padding:5px 14px;margin-bottom:18px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:22px;
  min-height:72px;padding:12px 0;flex-wrap:nowrap;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(46,107,255,.9),rgba(35,224,196,.75));
  color:#04101f;font-size:17px;box-shadow:0 8px 20px -10px rgba(46,107,255,.9);
}
.brand-name{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.4px;}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  background:var(--bg-elev-2);border:1px solid var(--line);
  border-radius:999px;padding:6px;margin-left:auto;
}
.chip{
  display:inline-block;white-space:nowrap;
  font-size:13.5px;color:var(--text-2);
  padding:8px 18px;border-radius:999px;
  border:1px solid transparent;transition:all .25s ease;
}
.chip:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.chip.is-active{
  background:var(--c-primary-soft);color:#DCE7FF;
  border-color:var(--c-primary-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12);
}
.chip:active{transform:translateY(1px);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--bg-elev-2);border:1px solid var(--line);color:var(--text-1);
  font-size:16px;
}
.nav-toggle:hover{border-color:var(--line-strong);}
.mobile-panel{
  display:none;flex-direction:column;gap:2px;
  padding:10px 20px 18px;border-top:1px solid var(--line);
  background:rgba(12,18,32,.96);
}
.mobile-panel.is-open{display:flex;}
.mobile-panel a{
  height:48px;display:flex;align-items:center;padding:0 14px;
  border-radius:12px;color:var(--text-2);font-size:15px;
}
.mobile-panel a:hover,.mobile-panel a.is-active{background:var(--c-primary-soft);color:#DCE7FF;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:14.5px;font-weight:600;border:1px solid transparent;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.btn-primary{
  background:linear-gradient(120deg,#2E6BFF,#23E0C4);
  color:#04101f;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#04101f;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(35,224,196,.5),0 16px 34px -10px rgba(35,224,196,.6);}
.btn-ghost{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-color:var(--line-strong);color:var(--text-1);
}
.btn-ghost:hover{color:var(--text-1);border-color:var(--c-primary-line);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:13.5px;}
.btn:active{transform:translateY(0);}

/* ---------- 玻璃卡 ---------- */
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  position:relative;
  transition:border-color .35s ease,transform .35s ease,box-shadow .35s ease;
}
.glass-card::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.glass-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:76px 0 84px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 320px at 12% 18%,rgba(46,107,255,.18),transparent 70%),
    radial-gradient(520px 300px at 88% 78%,rgba(35,224,196,.14),transparent 72%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(closest-side at 50% 40%,#000,transparent);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:flex;align-items:center;gap:48px;flex-wrap:wrap;}
.hero-copy{flex:1 1 480px;min-width:320px;}
.hero h1{font-size:44px;line-height:1.28;margin-bottom:18px;}
.hero h1 .accent{color:var(--c-accent);}
.hero-sub{color:var(--text-2);font-size:18px;max-width:640px;margin-bottom:16px;}
.hero-note{color:var(--text-3);font-size:13.5px;margin-bottom:30px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{flex:1 1 420px;min-width:300px;position:relative;}
.hero-visual img{
  width:100%;height:380px;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.hero-stats{
  position:absolute;left:-10px;right:-10px;bottom:-26px;
  padding:18px 22px;border-radius:var(--radius);
  display:flex;gap:26px;flex-wrap:wrap;
}
.hero-stat{flex:1 1 120px;}
.hero-stat .k{display:block;font-size:12.5px;color:var(--text-3);letter-spacing:.6px;}
.hero-stat .v{display:block;font-family:var(--font-mono);font-size:19px;color:var(--c-accent);}
.hero-stat .v.plain{color:var(--text-1);}

/* ---------- 下载卡 ---------- */
.plat-card{padding:26px;height:100%;display:flex;flex-direction:column;gap:14px;}
.plat-card.is-featured{box-shadow:var(--shadow-glow);border-color:rgba(35,224,196,.35);}
.plat-head{display:flex;align-items:center;gap:12px;}
.plat-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--bg-elev-2);border:1px solid var(--line);color:var(--c-accent);font-size:18px;
}
.plat-head h3{font-size:19px;}
.plat-head .tagline{font-size:12.5px;color:var(--text-3);}
.plat-meta{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:13px;color:var(--text-2);}
.plat-meta .mono{color:var(--text-1);}
.plat-card p{color:var(--text-2);font-size:14.5px;}
.plat-card .btn{align-self:flex-start;margin-top:auto;}

.badge{
  display:inline-block;font-size:12px;line-height:1;
  padding:5px 11px;border-radius:999px;font-weight:600;
}
.badge-soft{background:var(--c-primary-soft);color:#BBD0FF;border:1px solid var(--c-primary-line);}
.badge-accent{background:rgba(35,224,196,.14);color:var(--c-accent);border:1px solid rgba(35,224,196,.32);}
.badge-warn{background:rgba(255,184,77,.14);color:var(--c-warn);border:1px solid rgba(255,184,77,.32);}

/* ---------- 清单 ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.check-item{
  display:flex;gap:14px;padding:20px 22px;border-radius:var(--radius);
  background:var(--bg-elev-1);border:1px solid var(--line);
  transition:border-color .3s ease,transform .3s ease;
}
.check-item:hover{border-color:var(--c-primary-line);transform:translateY(-2px);}
.check-item i{color:var(--c-accent);font-size:17px;margin-top:5px;}
.check-item h4{font-size:16.5px;margin-bottom:4px;}
.check-item p{color:var(--text-2);font-size:14.5px;}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step{padding:24px 22px;border-radius:var(--radius);background:var(--bg-elev-2);border:1px solid var(--line);}
.step .num{
  font-family:var(--font-mono);font-size:13px;color:var(--c-accent);
  letter-spacing:1.4px;display:block;margin-bottom:10px;
}
.step h4{font-size:17px;margin-bottom:8px;}
.step p{color:var(--text-2);font-size:14.5px;}

/* ---------- 图文区块 ---------- */
.split{display:flex;gap:44px;align-items:center;flex-wrap:wrap;}
.split-media{flex:1 1 420px;min-width:290px;}
.split-media img{width:100%;height:330px;border:1px solid var(--line);box-shadow:var(--shadow-card);}
.split-body{flex:1 1 420px;min-width:290px;}
.split-body h2{font-size:28px;margin-bottom:12px;}
.split-body p{color:var(--text-2);font-size:15.5px;margin-bottom:14px;}
.dot-list li{
  position:relative;padding-left:20px;color:var(--text-2);font-size:14.8px;margin-bottom:10px;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-soft);
}
.hash-box{
  margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);
  background:var(--bg-elev-2);border:1px dashed var(--line-strong);
  font-family:var(--font-mono);font-size:13px;color:var(--text-2);word-break:break-all;line-height:1.7;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  overflow:hidden;transition:border-color .3s ease;
}
.faq-item.is-open{border-color:var(--c-primary-line);}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;color:var(--text-1);
  font-size:16px;font-weight:600;text-align:left;padding:14px 22px;
}
.faq-q i{color:var(--c-accent);transition:transform .3s ease;font-size:14px;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{
  padding:2px 22px 20px;color:var(--text-2);font-size:14.8px;
  background:rgba(46,107,255,.07);border-top:1px solid var(--line);
  padding-top:16px;
}

/* ---------- CTA ---------- */
.cta-band{
  padding:38px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(140deg,rgba(46,107,255,.20),rgba(35,224,196,.10));
  border:1px solid var(--line-strong);box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{color:var(--text-2);font-size:15px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;padding:72px 0 28px;
  background:var(--bg-elev-1);border-top:1px solid var(--line);
}
.footer-grid{row-gap:34px;}
.footer-col{padding:0 12px;}
.footer-desc{color:var(--text-3);font-size:13.8px;margin-top:16px;max-width:360px;line-height:1.8;}
.footer-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;}
.footer-links li{margin-bottom:11px;}
.footer-links a,.footer-links span{color:var(--text-2);font-size:13.8px;}
.footer-links a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  color:var(--text-3);font-size:12px;
}

/* ---------- 响应式 ---------- */
@media (min-width:992px){
  .brand,.nav-chips,.header-actions{flex:0 0 auto;}
  .nav-chips{margin-left:auto;}
}
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .hero{padding:56px 0 72px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16.5px;}
  .hero-visual img{height:300px;}
  .hero-stats{position:static;margin-top:18px;}
  .section-head h2{font-size:26px;}
  .split-body h2{font-size:23px;}
  .header-inner{flex-wrap:wrap;gap:14px;}
  .nav-chips{
    order:3;width:100%;margin-left:0;overflow-x:auto;
    -ms-overflow-style:none;scrollbar-width:none;
  }
  .nav-chips::-webkit-scrollbar{display:none;}
  .header-actions{margin-left:auto;}
  .nav-toggle{display:inline-grid;place-items:center;}
  .check-list{grid-template-columns:1fr;}
  .split{gap:26px;}
  .split-media img{height:260px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .hero h1{font-size:28px;}
  .section{padding:54px 0;}
  .steps{grid-template-columns:1fr;}
  .plat-meta{gap:8px 16px;}
  .hero-btns .btn{width:100%;}
  .cta-band{padding:28px 22px;}
  .cta-band .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero h1{font-size:25px;}
  .section-head h2{font-size:22px;}
  .chip{font-size:13px;padding:7px 14px;}
  .glass-card,.plat-card{padding:20px;}
  .brand-name{font-size:16.5px;}
  .hero-visual img{height:220px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#2E6BFF;
  --c-primary-soft:rgba(46,107,255,.16);
  --c-accent:#23E0C4;
  --c-warn:#FFB84D;
  --bg-base:#070B14;
  --bg-elev-1:#0C1220;
  --bg-elev-2:#111A2C;
  --text-main:#F2F6FF;
  --text-sub:#A8B6D1;
  --text-weak:#6E7C99;
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(255,255,255,.18);
  --radius-s:12px;
  --radius-m:18px;
  --radius-l:22px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(35,224,196,.35),0 10px 30px -8px rgba(35,224,196,.45);
  --gap-section:88px;
  --font-mono:"DIN Alternate","Roboto Mono","SFMono-Regular",Menlo,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-main);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--c-primary);}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.mono{font-family:var(--font-mono);letter-spacing:.02em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;}
.section{padding:var(--gap-section) 0;}
.section-tight{padding:56px 0;}

/* ---------- 背景装饰 ---------- */
.bg-glow{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% 6%, rgba(46,107,255,.16), transparent 68%),
    radial-gradient(620px 380px at 88% 22%, rgba(35,224,196,.10), transparent 70%),
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px) 0 0/64px 64px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:74px;
}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#2E6BFF,#173C9E);
  box-shadow:0 0 0 1px rgba(46,107,255,.45),0 8px 22px -10px rgba(46,107,255,.9);
  color:#fff;font-size:16px;
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--text-main);}
.nav-chips{
  display:flex;align-items:center;gap:4px;
  padding:6px;border-radius:999px;
  background:var(--bg-elev-2);
  border:1px solid var(--border);
}
.chip{
  display:inline-block;padding:8px 18px;border-radius:999px;
  font-size:14px;line-height:1.4;color:var(--text-sub);white-space:nowrap;
  transition:background .25s ease,color .25s ease,transform .15s ease;
}
.chip:hover{color:var(--text-main);background:rgba(255,255,255,.06);}
.chip:active{transform:translateY(1px);}
.chip.is-active{
  color:#fff;background:var(--c-primary-soft);
  box-shadow:inset 0 0 0 1px rgba(46,107,255,.5);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--bg-elev-2);border:1px solid var(--border);
  color:var(--text-main);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--border-strong);}
.mobile-panel{
  display:none;padding:14px 0 22px;border-top:1px solid var(--border);
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;height:48px;padding:0 14px;
  border-radius:12px;color:var(--text-sub);font-size:15px;
}
.mobile-panel a:hover{background:var(--bg-elev-2);color:var(--text-main);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#2E6BFF,#1D46BE);
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 0 1px rgba(35,224,196,.5),0 16px 34px -10px rgba(35,224,196,.6);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border-color:var(--border);color:var(--text-main);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--border-strong);background:rgba(255,255,255,.09);color:var(--text-main);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:focus-visible,a:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:999px;
}

/* ---------- 通用卡片 ---------- */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--border);
  border-radius:var(--radius-m);
  box-shadow:var(--shadow-card);
  position:relative;
  transition:border-color .35s ease,transform .35s ease;
}
.glass::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;border-radius:inherit;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.glass:hover{border-color:var(--border-strong);}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;overflow:hidden;
  padding:74px 0 62px;
  background-image:linear-gradient(180deg,rgba(7,11,20,.55),rgba(7,11,20,.94)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.page-banner::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(46,107,255,.6),transparent);
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-weak);margin-bottom:18px;
}
.breadcrumb a{color:var(--text-weak);}
.breadcrumb a:hover{color:var(--c-primary);}
.banner-inner{max-width:820px;position:relative;z-index:2;}
.banner-inner h1{
  font-size:44px;line-height:1.24;font-weight:800;letter-spacing:-.01em;
  margin-bottom:16px;
}
.banner-inner h1 span{
  background:linear-gradient(100deg,#7FB0FF,#23E0C4);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.banner-sub{font-size:17px;color:var(--text-sub);line-height:1.85;margin-bottom:24px;max-width:680px;}
.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;
  background:var(--c-primary-soft);color:#8FB6FF;
  border:1px solid rgba(46,107,255,.28);
}
.tag.accent{background:rgba(35,224,196,.12);color:var(--c-accent);border-color:rgba(35,224,196,.3);}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;}
.banner-stats{
  display:flex;flex-wrap:wrap;gap:34px;margin-top:36px;
  padding-top:24px;border-top:1px solid var(--border);
}
.stat-item .stat-num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--text-main);}
.stat-item .stat-num em{font-style:normal;color:var(--c-accent);}
.stat-item .stat-label{font-size:12.5px;color:var(--text-weak);}

/* ---------- 主体两栏 ---------- */
.main-grid{padding:72px 0 var(--gap-section);}
.aside-card{padding:22px 18px;border-radius:var(--radius-m);}
.aside-title{
  font-size:12.5px;letter-spacing:.14em;color:var(--text-weak);
  text-transform:uppercase;margin-bottom:14px;font-family:var(--font-mono);
}
.aside-nav li + li{margin-top:4px;}
.aside-nav a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:12px;font-size:14.5px;color:var(--text-sub);
  transition:background .25s ease,color .25s ease;
}
.aside-nav a i{font-size:12px;color:var(--c-primary);opacity:.75;}
.aside-nav a:hover{background:rgba(255,255,255,.06);color:var(--text-main);}
.aside-note{
  margin-top:20px;padding:14px;border-radius:14px;
  background:rgba(35,224,196,.07);border:1px solid rgba(35,224,196,.22);
  font-size:13px;color:var(--text-sub);line-height:1.75;
}
.aside-note strong{color:var(--c-accent);font-weight:600;}

.content-stack > * + *{margin-top:26px;}
.entry-card{padding:28px;border-radius:var(--radius-l);}
.entry-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:12px;}
.entry-index{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;font-family:var(--font-mono);font-size:15px;font-weight:700;
  background:var(--c-primary-soft);color:#8FB6FF;border:1px solid rgba(46,107,255,.3);
}
.entry-head h2{font-size:22px;font-weight:700;line-height:1.5;}
.entry-text{color:var(--text-sub);font-size:15.5px;line-height:1.85;}
.entry-media{
  margin:20px 0;border-radius:14px;overflow:hidden;
  border:1px solid var(--border);
}
.entry-media img{width:100%;height:230px;transition:transform .5s ease;}
.entry-card:hover .entry-media img{transform:scale(1.03);}
.point-list{margin-top:18px;display:grid;gap:10px;}
.point-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.8px;color:var(--text-sub);
}
.point-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 0 4px rgba(46,107,255,.16);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:22px;padding-top:18px;border-top:1px solid var(--border);
  font-size:13px;color:var(--text-weak);
}
.meta-row .mono{color:var(--text-sub);}
.meta-link{margin-left:auto;color:var(--c-primary);font-size:13.5px;font-weight:600;}
.meta-link:hover{text-decoration:underline;text-underline-offset:4px;}

/* ---------- 板块标题 ---------- */
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:32px;line-height:1.35;font-weight:800;margin-bottom:12px;}
.section-head p{color:var(--text-sub);font-size:16px;}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12.5px;
  letter-spacing:.16em;color:var(--c-accent);margin-bottom:12px;text-transform:uppercase;
}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{padding:28px 24px;border-radius:var(--radius-l);}
.scene-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:#8FB6FF;font-size:18px;margin-bottom:18px;
  border:1px solid rgba(46,107,255,.28);
}
.scene-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.scene-card p{font-size:14.5px;color:var(--text-sub);line-height:1.8;}
.scene-card:hover{transform:translateY(-4px);}

/* ---------- 流程 ---------- */
.flow-wrap{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;
}
.flow-item{padding:26px 22px;border-radius:var(--radius-m);}
.flow-num{
  font-family:var(--font-mono);font-size:13px;color:var(--c-accent);
  letter-spacing:.14em;margin-bottom:14px;
}
.flow-item h3{font-size:17px;font-weight:700;margin-bottom:9px;}
.flow-item p{font-size:14px;color:var(--text-sub);line-height:1.78;}
.flow-item:hover{transform:translateY(-4px);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
.faq-item{
  border-radius:var(--radius-m);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:16px;
  min-height:56px;padding:18px 24px;
  font-size:16.5px;font-weight:600;color:var(--text-main);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-arrow{
  margin-left:auto;flex:0 0 auto;font-size:13px;color:var(--c-primary);
  transition:transform .3s ease;
}
.faq-item[open] summary .faq-arrow{transform:rotate(180deg);}
.faq-body{
  padding:0 24px 22px;font-size:15px;color:var(--text-sub);
  line-height:1.85;
}
.faq-item[open]{
  background:linear-gradient(160deg,rgba(46,107,255,.14),rgba(255,255,255,.02));
  border-color:rgba(46,107,255,.35);
}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--radius-l);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(120deg,rgba(46,107,255,.20),rgba(35,224,196,.10)),var(--bg-elev-1);
  border:1px solid var(--border);
  position:relative;overflow:hidden;
}
.cta-band h2{font-size:26px;font-weight:800;margin-bottom:8px;}
.cta-band p{color:var(--text-sub);font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--gap-section);
  border-top:1px solid var(--border);
  background:var(--bg-elev-1);
  padding:66px 0 26px;
}
.footer-grid > div{margin-bottom:28px;}
.footer-desc{margin-top:16px;font-size:14px;color:var(--text-sub);line-height:1.85;max-width:340px;}
.footer-title{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;
  color:var(--text-weak);margin-bottom:16px;text-transform:uppercase;
}
.footer-links li{margin-bottom:10px;font-size:14px;color:var(--text-sub);}
.footer-links a{color:var(--text-sub);}
.footer-links a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:26px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--text-weak);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .banner-inner h1{font-size:38px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .flow-wrap{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  :root{--gap-section:64px;}
  .nav-chips{display:none;}
  .header-inner .btn-primary{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .aside-card{position:static !important;margin-bottom:26px;}
  .aside-nav{display:flex;flex-wrap:wrap;gap:6px;}
  .aside-nav li{margin:0 !important;}
  .aside-nav a{padding:8px 14px;background:rgba(255,255,255,.05);border-radius:999px;font-size:13.5px;}
  .banner-inner h1{font-size:31px;}
  .page-banner{padding:52px 0 44px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:56px 0;}
  .main-grid{padding:44px 0 56px;}
  .banner-inner h1{font-size:27px;}
  .banner-sub{font-size:15.5px;}
  .section-head h2{font-size:24px;}
  .scene-grid{grid-template-columns:1fr;}
  .flow-wrap{grid-template-columns:1fr;}
  .entry-card{padding:22px;}
  .entry-head h2{font-size:19px;}
  .entry-media img{height:180px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .banner-actions .btn{flex:1 1 100%;}
  .banner-stats{gap:22px;}
  .meta-link{margin-left:0;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-name{font-size:16px;}
  .banner-stats{flex-direction:column;gap:14px;}
  .faq-item summary{font-size:15.5px;padding:16px 18px;}
  .faq-body{padding:0 18px 18px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#2E6BFF;
  --c-primary-soft:rgba(46,107,255,.16);
  --c-accent:#23E0C4;
  --c-warn:#FFB84D;
  --bg-base:#070B14;
  --bg-elev-1:#0C1220;
  --bg-elev-2:#111A2C;
  --t-main:#F2F6FF;
  --t-sub:#A8B6D1;
  --t-weak:#6E7C99;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-card:18px;
  --r-card-lg:22px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(35,224,196,.35),0 10px 30px -8px rgba(35,224,196,.45);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --sec-gap:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--t-main);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(600px 420px at 12% 6%,rgba(46,107,255,.18),transparent 70%),
    radial-gradient(520px 380px at 88% 12%,rgba(35,224,196,.12),transparent 72%),
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--c-accent);}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em;color:var(--t-main);}
h1{font-size:44px;}
h2{font-size:32px;}
h3{font-size:22px;}
p{margin:0 0 18px;color:var(--t-sub);}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
.mono{font-family:var(--mono);letter-spacing:.02em;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.section{padding:var(--sec-gap) 0;position:relative;z-index:1;}
.section-head{margin-bottom:40px;max-width:720px;}
.section-head h2{margin-bottom:12px;}
.section-head p{margin:0;font-size:15px;color:var(--t-weak);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-accent);letter-spacing:.08em;
  padding:6px 14px;border-radius:999px;border:1px solid rgba(35,224,196,.28);
  background:rgba(35,224,196,.08);margin-bottom:18px;
}
.eyebrow-primary{color:#9FBEFF;border-color:rgba(46,107,255,.35);background:var(--c-primary-soft);}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t-main);font-weight:700;font-size:18px;}
.brand:hover{color:var(--t-main);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),#1b3f9e);
  box-shadow:0 8px 20px -10px rgba(46,107,255,.9);
  color:#fff;font-size:15px;
}
.brand-name{letter-spacing:.01em;}
.nav-chips{
  display:flex;align-items:center;gap:4px;margin-left:8px;
  background:var(--bg-elev-2);padding:8px;border-radius:14px;border:1px solid var(--line);
  overflow-x:auto;scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  white-space:nowrap;display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;font-size:13px;color:var(--t-sub);
  border:1px solid transparent;transition:all .25s ease;
}
.chip:hover{color:var(--t-main);background:rgba(255,255,255,.05);}
.chip.is-active{
  color:#BCD2FF;background:var(--c-primary-soft);border-color:rgba(46,107,255,.45);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.chip:active{transform:translateY(1px);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--bg-elev-2);color:var(--t-main);font-size:16px;
}
.mobile-panel{
  display:none;border-top:1px solid var(--line);
  background:rgba(9,14,26,.96);padding:14px 20px 20px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel .m-item{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;font-size:15px;color:var(--t-sub);border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-panel .m-item:last-child{border-bottom:0;}
.mobile-panel .m-item.is-active{color:#BCD2FF;}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,border-color .25s ease;
  border:1px solid transparent;cursor:pointer;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(120deg,var(--c-primary),#1E4FD8 60%,rgba(35,224,196,.85));
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(35,224,196,.5),0 16px 34px -12px rgba(35,224,196,.6);}
.btn-ghost{
  background:var(--glass);border-color:var(--line);color:var(--t-main);
  backdrop-filter:blur(12px) saturate(140%);
}
.btn-ghost:hover{color:var(--t-main);border-color:var(--line-strong);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}

/* ===== hero ===== */
.hero{padding:72px 0 64px;position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.hero h1{font-size:44px;margin-bottom:20px;}
.hero h1 .hl{color:var(--c-accent);}
.hero-lead{font-size:18px;color:var(--t-sub);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;font-size:13px;color:var(--t-weak);}
.hero-meta strong{display:block;color:var(--t-main);font-family:var(--mono);font-size:16px;font-weight:600;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;height:340px;border-radius:var(--r-card-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 20px;display:flex;gap:26px;box-shadow:var(--shadow-card);
}
.hero-float div span{display:block;font-size:12px;color:var(--t-weak);}
.hero-float div b{font-family:var(--mono);font-size:15px;color:var(--c-accent);font-weight:600;}

/* ===== stats ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.stat-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.stat-card b{display:block;font-family:var(--mono);font-size:30px;color:var(--t-main);margin-bottom:6px;}
.stat-card span{font-size:13px;color:var(--t-weak);}

/* ===== filter + faq ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.filter-chip{
  height:36px;padding:0 18px;border-radius:999px;font-size:13px;color:var(--t-sub);
  background:var(--bg-elev-1);border:1px solid var(--line);transition:all .25s ease;
}
.filter-chip:hover{color:var(--t-main);border-color:var(--line-strong);}
.filter-chip.is-active{
  color:#BCD2FF;background:var(--c-primary-soft);border-color:rgba(46,107,255,.5);
}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.is-open{border-color:rgba(46,107,255,.45);box-shadow:var(--shadow-card);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  min-height:56px;padding:14px 22px;font-size:16px;font-weight:600;color:var(--t-main);
}
.faq-q .q-index{
  font-family:var(--mono);font-size:13px;color:var(--c-primary);flex:0 0 auto;
}
.faq-q .q-text{flex:1;}
.faq-q .q-arrow{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--t-sub);font-size:12px;
  transition:transform .3s ease,color .3s ease,border-color .3s ease;
}
.faq-item.is-open .q-arrow{transform:rotate(180deg);color:var(--c-accent);border-color:rgba(35,224,196,.5);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{
  padding:4px 22px 22px 62px;
  background:linear-gradient(180deg,rgba(46,107,255,.10),rgba(46,107,255,.02));
  color:var(--t-sub);font-size:15px;
}
.faq-a-inner p{margin:0 0 12px;}
.faq-a-inner p:last-child{margin-bottom:0;}
.faq-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;color:#BCD2FF;background:var(--c-primary-soft);border:1px solid rgba(46,107,255,.3);
}
.tag-accent{color:#9BF3E5;background:rgba(35,224,196,.1);border-color:rgba(35,224,196,.32);}

/* ===== steps ===== */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  transition:transform .35s ease,border-color .35s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.step-num{
  font-family:var(--mono);font-size:13px;color:var(--c-accent);
  display:inline-block;margin-bottom:14px;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(35,224,196,.28);background:rgba(35,224,196,.08);
}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card p{font-size:14px;margin:0;color:var(--t-weak);}

/* ===== related cards ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card-lg);overflow:hidden;
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .35s ease,border-color .35s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.card-thumb{height:170px;overflow:hidden;}
.card-thumb img{width:100%;height:100%;transition:transform .35s ease;}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:19px;margin-bottom:10px;}
.card-body p{font-size:14px;color:var(--t-weak);margin-bottom:18px;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{gap:9px;}

/* ===== cta ===== */
.cta-band{
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--r-card-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,107,255,.22),transparent 70%);
}
.cta-band h2{font-size:28px;margin-bottom:10px;}
.cta-band p{margin:0;font-size:15px;color:var(--t-sub);max-width:560px;}

/* ===== footer ===== */
.site-footer{
  margin-top:40px;padding:64px 0 28px;
  background:var(--bg-elev-1);border-top:1px solid var(--line);position:relative;z-index:1;
}
.footer-grid{row-gap:32px;}
.footer-col .brand{margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--t-weak);max-width:340px;}
.footer-title{font-size:14px;font-weight:700;color:var(--t-main);margin-bottom:16px;}
.footer-links li{margin-bottom:10px;font-size:14px;}
.footer-links a{color:var(--t-sub);}
.footer-links a:hover{color:var(--c-primary);}
.footer-links .mono{color:var(--t-weak);font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:var(--t-weak);
}

/* ===== responsive ===== */
@media (max-width:1199px){
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  :root{--sec-gap:68px;}
  .nav-chips{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-actions .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  h1{font-size:34px;}
  .hero h1{font-size:34px;}
  h2{font-size:26px;}
  .hero-media img{height:280px;}
  .hero-float{left:12px;bottom:-18px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .stat-grid,.steps-grid,.card-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  h1{font-size:30px;}
  .hero h1{font-size:30px;}
  h2{font-size:24px;}
  .hero-lead{font-size:16px;}
  .faq-a-inner{padding:4px 20px 20px 20px;}
  .faq-q{padding:12px 18px;font-size:15px;}
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cta-band{padding:28px 22px;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;}
  .brand-name{font-size:16px;}
}