/* roulang page: index */
:root{
  --ink-900:#05070d;
  --ink-800:#0a1018;
  --ink-700:#101a2a;
  --ink-600:#16233a;
  --brand:#2fd4ff;
  --brand-600:#12a6cc;
  --accent:#ff8a3d;
  --text:#e6eefb;
  --muted:#9aa8bd;
  --dim:#66758c;
  --line:rgba(120,170,255,.16);
  --line-soft:rgba(120,170,255,.09);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --glass-solid:#0e1728;
  --r-card:18px;
  --r-cover:22px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-soft:0 6px 18px rgba(0,0,0,.28);
  --mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-bg:#05070d;
  --bs-body-color:#e6eefb;
  --bs-border-color:rgba(120,170,255,.16);
  --bs-link-color:#2fd4ff;
  --bs-link-hover-color:#7ae6ff;
  --bs-border-radius:12px;
  --bs-font-sans-serif:var(--sans);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    linear-gradient(rgba(120,170,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,170,255,.035) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:992px){.container{padding:0 32px}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:68px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.82);
  border-bottom:1px solid rgba(120,170,255,.2);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.logo{
  display:inline-flex;align-items:center;gap:6px;
  font-size:18px;font-weight:700;letter-spacing:.4px;color:var(--text);
  white-space:nowrap;
}
.logo:hover{color:var(--text)}
.logo .logo-ayx{
  font-family:var(--mono);
  font-size:17px;
  letter-spacing:1px;
  color:var(--brand);
  text-shadow:0 0 14px rgba(47,212,255,.55);
  padding:0 2px;
}
.nav-links{display:none;align-items:center;gap:6px}
@media(min-width:992px){.nav-links{display:flex}}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--muted);
  border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%) scaleX(0);
  width:18px;height:2px;border-radius:2px;background:var(--brand);
  box-shadow:0 0 10px rgba(47,212,255,.85);
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-link.active{color:var(--brand);background:rgba(47,212,255,.12)}
.nav-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-cta{
  margin-left:14px;
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 20px;
  font-size:14px;font-weight:600;
  color:#04121a;
  background:var(--brand);
  border:0;border-radius:var(--r-btn);
  box-shadow:0 0 24px rgba(47,212,255,.35);
  transition:box-shadow .22s ease,transform .22s ease,background .22s ease;
  cursor:pointer;
}
.nav-cta:hover{color:#04121a;transform:translateY(-1px);box-shadow:0 0 34px rgba(47,212,255,.55)}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;
  background:rgba(47,212,255,.1);
  border:1px solid var(--line);
  border-radius:12px;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--brand);
  position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--brand);
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
@media(min-width:992px){.nav-toggle{display:none}}

.mobile-panel{
  position:fixed;top:56px;left:0;right:0;
  display:none;
  flex-direction:column;
  padding:14px 20px 26px;
  background:#060b14;
  border-bottom:1px solid rgba(120,170,255,.22);
  box-shadow:0 18px 40px rgba(0,0,0,.6);
  z-index:999;
  max-height:calc(100vh - 56px);
  overflow-y:auto;
}
.mobile-panel.is-open{display:flex}
.mobile-panel a{
  padding:14px 4px;
  font-size:16px;
  color:var(--muted);
  border-bottom:1px solid var(--line-soft);
}
.mobile-panel a.active{color:var(--brand)}
.mobile-panel .mobile-cta{
  margin-top:18px;
  text-align:center;
  padding:13px 18px;
  color:#04121a;font-weight:700;
  background:var(--brand);
  border-radius:var(--r-btn);
  border-bottom:0;
  box-shadow:0 0 24px rgba(47,212,255,.35);
}
@media(min-width:992px){.mobile-panel{display:none!important}}

/* ============ 按钮与标签 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  font-size:15px;font-weight:600;
  color:#04121a;
  background:var(--brand);
  border:0;border-radius:var(--r-btn);
  box-shadow:0 0 24px rgba(47,212,255,.35);
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease;
  cursor:pointer;
}
.btn-main:hover{color:#04121a;transform:translateY(-1px);box-shadow:0 0 34px rgba(47,212,255,.55);background:#4ddcff}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  font-size:15px;font-weight:600;
  color:var(--brand);
  background:transparent;
  border:1px solid rgba(47,212,255,.4);
  border-radius:var(--r-btn);
  transition:background .22s ease,transform .22s ease,border-color .22s ease;
  cursor:pointer;
}
.btn-ghost:hover{color:var(--brand);background:rgba(47,212,255,.12);transform:translateY(-1px);border-color:rgba(47,212,255,.7)}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:transform .2s ease,color .2s ease;
}
.btn-line:hover{color:#7ae6ff;transform:translateX(3px)}
.pill{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  font-size:12px;line-height:1.6;
  color:var(--brand);
  background:rgba(47,212,255,.1);
  border:1px solid rgba(47,212,255,.24);
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.pill-accent{color:var(--accent);background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.3)}
.mono{font-family:var(--mono);letter-spacing:.5px}

/* ============ 玻璃卡 ============ */
.glass{
  background:var(--glass);
  background-color:var(--glass-solid);
  border:1px solid rgba(140,190,255,.18);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-soft),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}

/* ============ Hero ============ */
.hero{
  position:relative;
  margin-top:0;
  padding:120px 0 64px;
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  background-repeat:no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,7,13,.96) 0%,rgba(5,7,13,.86) 42%,rgba(5,7,13,.35) 100%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:180px;
  background:linear-gradient(180deg,rgba(5,7,13,0) 0%,var(--ink-900) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;gap:36px;align-items:center}
@media(min-width:992px){.hero-inner{grid-template-columns:1.15fr .85fr;gap:48px}}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;
  font-size:12px;letter-spacing:1px;color:var(--brand);
  background:rgba(47,212,255,.1);
  border:1px solid rgba(47,212,255,.26);
  border-radius:var(--r-pill);
  margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.18;
  margin-bottom:18px;
  text-shadow:0 6px 30px rgba(0,0,0,.55);
}
.hero h1 .hl{color:var(--brand);text-shadow:0 0 30px rgba(47,212,255,.45)}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px}
.badge-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;
  font-size:13px;color:var(--muted);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(140,190,255,.18);
  border-radius:var(--r-pill);
  backdrop-filter:blur(10px);
}
.badge-chip b{font-family:var(--mono);color:var(--brand);font-weight:700}
.hero-card{padding:24px}
.hero-card h2{font-size:16px;color:var(--text);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.hero-card h2::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(255,138,61,.9)}
.hero-card-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14px;color:var(--muted);
}
.hero-card-list li:last-child{border-bottom:0}
.hero-card-list b{font-family:var(--mono);color:var(--brand);font-size:14px}

/* ============ 通用板块 ============ */
.section{padding:64px 0}
@media(min-width:992px){.section{padding:96px 0}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:36px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,3vw,32px)}
.section-head p{color:var(--dim);font-size:14px;margin-top:8px}
.section-tag{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:2px;
  color:var(--brand-600);margin-bottom:10px;
}

/* ============ 合集目录 ============ */
.track{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
@media(min-width:768px){.track{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:1200px){.track{grid-template-columns:repeat(5,minmax(0,1fr));gap:22px}}
.track-card{
  position:relative;
  display:flex;flex-direction:column;
  overflow:hidden;
  border-radius:var(--r-cover);
  background:var(--glass);
  background-color:var(--glass-solid);
  border:1px solid rgba(140,190,255,.18);
  box-shadow:var(--shadow-soft);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.track-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,255,.55);
  box-shadow:var(--shadow),0 0 0 1px rgba(47,212,255,.35);
  color:inherit;
}
.track-thumb{position:relative;aspect-ratio:16/9;background:#0d1524;overflow:hidden}
.track-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.track-card:hover .track-thumb img{transform:scale(1.05)}
.track-no{
  position:absolute;left:12px;top:12px;
  font-family:var(--mono);font-size:12px;letter-spacing:1px;
  padding:3px 9px;border-radius:var(--r-pill);
  color:#04121a;background:var(--brand);font-weight:700;
}
.track-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.track-body h3{font-size:16px;color:var(--text)}
.track-body span{font-size:13px;color:var(--dim)}
.track-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;padding-top:10px;
  font-size:12px;color:var(--dim);font-family:var(--mono);
}
.track-foot em{font-style:normal;color:var(--brand)}

/* ============ 三步查阅 ============ */
.steps{display:grid;gap:20px}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{
  position:relative;
  padding:26px 24px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:border-color .22s ease,transform .22s ease;
}
.step:hover{border-color:rgba(47,212,255,.45);transform:translateY(-3px)}
.step-no{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:rgba(47,212,255,.1);border:1px solid rgba(47,212,255,.28);
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px}

/* ============ 精选条目 ============ */
.featured{display:grid;gap:22px}
@media(min-width:992px){.featured{grid-template-columns:1.25fr 1fr}}
.big-card{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-cover);
  min-height:330px;
  border:1px solid rgba(140,190,255,.18);
  box-shadow:var(--shadow);
  background:#0d1524;
}
.big-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.big-card:hover img{transform:scale(1.04)}
.big-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,13,.05) 0%,rgba(5,7,13,.72) 58%,rgba(5,7,13,.95) 100%);
}
.big-card-content{
  position:relative;z-index:2;
  display:flex;flex-direction:column;justify-content:flex-end;gap:10px;
  height:100%;padding:26px 24px;
}
.big-card-content .pill{align-self:flex-start}
.big-card-content h3{font-size:22px;color:#fff}
.big-card-content p{font-size:14px;color:rgba(230,238,251,.78);max-width:46ch}
.big-meta{display:flex;gap:14px;font-family:var(--mono);font-size:12px;color:rgba(230,238,251,.62)}
.grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:575px){.grid-2x2{grid-template-columns:1fr}}
.mini-card{
  display:flex;flex-direction:column;gap:8px;
  padding:18px;
  border-radius:var(--r-card);
  background:var(--glass);background-color:var(--glass-solid);
  border:1px solid var(--line);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.mini-card:hover{transform:translateY(-3px);border-color:rgba(47,212,255,.45);box-shadow:0 0 0 1px rgba(47,212,255,.28);color:inherit}
.mini-card h3{font-size:15.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card p{font-size:13.5px;color:var(--dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto;padding-top:8px;font-family:var(--mono);font-size:12px;color:var(--dim)}

/* ============ 最新信息 CMS ============ */
.news-list{display:flex;flex-direction:column;gap:12px}
.news-row{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;gap:16px;
  padding:16px 18px;
  border-radius:14px;
  background:rgba(255,255,255,.035);
  border:1px solid var(--line-soft);
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.news-row:hover{background:rgba(47,212,255,.07);border-color:rgba(47,212,255,.35);color:inherit;transform:translateX(3px)}
.news-main{display:flex;flex-direction:column;gap:4px;min-width:0}
.news-title{font-size:15.5px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-desc{font-size:13px;color:var(--dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-time{font-family:var(--mono);font-size:12px;color:var(--dim);white-space:nowrap}
.news-arrow{display:none;font-family:var(--mono);color:var(--brand)}
@media(min-width:768px){
  .news-row{grid-template-columns:auto 1fr auto auto}
  .news-arrow{display:block}
}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:48px 24px;text-align:center;
  border-radius:var(--r-card);
  background:var(--glass);background-color:var(--glass-solid);
  border:1px dashed rgba(140,190,255,.28);
}
.empty-state .empty-icon{
  width:52px;height:52px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:22px;color:var(--brand);
  background:rgba(47,212,255,.1);border:1px solid rgba(47,212,255,.3);
}
.empty-state p{color:var(--muted);font-size:15px}

/* ============ 相关推荐 ============ */
.rec-grid{display:grid;gap:18px}
@media(min-width:576px){.rec-grid{grid-template-columns:1fr 1fr}}
@media(min-width:992px){.rec-grid{grid-template-columns:repeat(4,1fr)}}
.rec-card{
  display:block;padding:20px 18px;
  border-radius:16px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  transition:border-color .22s ease,transform .22s ease,background .22s ease;
}
.rec-card:hover{border-color:rgba(47,212,255,.5);transform:translateY(-3px);background:rgba(47,212,255,.07);color:inherit}
.rec-card .rec-no{font-family:var(--mono);font-size:12px;color:var(--brand-600);letter-spacing:1px}
.rec-card h3{font-size:15.5px;margin:8px 0 6px;color:var(--text)}
.rec-card p{font-size:13px;color:var(--dim)}

/* ============ CTA 面板 ============ */
.cta-panel{
  position:relative;overflow:hidden;
  padding:44px 28px;
  border-radius:var(--r-cover);
  background:linear-gradient(160deg,rgba(47,212,255,.12),rgba(255,138,61,.06) 60%,rgba(255,255,255,.02));
  border:1px solid rgba(140,190,255,.24);
  box-shadow:var(--shadow);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:.9;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;gap:26px;align-items:center}
@media(min-width:992px){.cta-inner{grid-template-columns:1fr auto}}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:10px}
.cta-inner p{color:var(--muted);font-size:15px;max-width:56ch}
.cta-buttons{display:flex;flex-wrap:wrap;gap:12px}
.copy-note{
  margin-top:14px;font-family:var(--mono);font-size:12px;color:var(--brand-600);
  min-height:18px;
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:12px}
.faq-item{
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item:hover{border-color:rgba(47,212,255,.35)}
.faq-item.is-open{border-color:rgba(47,212,255,.45);background:rgba(47,212,255,.06);box-shadow:inset 3px 0 0 0 var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;
  background:transparent;border:0;
  color:var(--text);font-size:16px;font-weight:600;text-align:left;
  cursor:pointer;
}
.faq-q .sign{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;
  font-family:var(--mono);font-size:16px;line-height:1;
  color:var(--brand);background:rgba(47,212,255,.12);border:1px solid rgba(47,212,255,.28);
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{padding:0 20px 20px;color:var(--muted);font-size:14.5px}
.faq-item.is-open .faq-a{max-height:320px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:32px;
  background:#04060b;
  border-top:1px solid rgba(120,170,255,.14);
  padding:56px 0 26px;
}
.footer-grid{display:grid;gap:34px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-brand .logo{font-size:19px;margin-bottom:14px}
.footer-brand p{color:var(--dim);font-size:13.5px;max-width:32ch}
.footer-col h4{
  font-family:var(--mono);font-size:12px;letter-spacing:2px;
  color:var(--brand-600);font-weight:700;margin-bottom:16px;
}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:38px;padding-top:20px;
  border-top:1px solid rgba(120,170,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--dim);
}
.footer-bottom .mono{font-size:12px}

/* roulang page: article */
:root{
  --brand:#2fd4ff;
  --brand-600:#12a6cc;
  --brand-ink:#07708d;
  --accent:#ff8a3d;
  --ink:#0d1a2b;
  --ink-2:#41556e;
  --ink-3:#7d8ea3;
  --bg:#f2f7fd;
  --surface:#ffffff;
  --surface-2:#eaf3fc;
  --line:rgba(18,58,108,.12);
  --line-strong:rgba(18,58,108,.2);
  --night:#08111f;
  --night-2:#0d1b2d;
  --radius-card:18px;
  --radius-cover:22px;
  --radius-btn:12px;
  --shadow:0 12px 30px rgba(15,40,80,.08);
  --shadow-hover:0 18px 42px rgba(15,40,80,.15);
  --mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  --bs-body-bg:#f2f7fd;
  --bs-body-color:#0d1a2b;
  --bs-border-color:rgba(18,58,108,.12);
  --bs-link-color:#07708d;
  --bs-link-hover-color:#12a6cc;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:
    radial-gradient(900px 420px at 88% -8%, rgba(47,212,255,.16), transparent 62%),
    radial-gradient(700px 380px at 2% 6%, rgba(255,138,61,.10), transparent 60%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-600)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--mono);letter-spacing:.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:992px){.container{padding-left:32px;padding-right:32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(8,17,31,.94);
  border-bottom:1px solid rgba(120,170,255,.16);
  backdrop-filter:blur(14px) saturate(120%);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{
  display:inline-flex;align-items:baseline;gap:6px;
  font-size:19px;font-weight:700;color:#e9f4ff;letter-spacing:.02em;white-space:nowrap;
}
.logo:hover{color:#fff}
.logo-ayx{
  font-family:var(--mono);font-weight:700;letter-spacing:.06em;
  color:var(--brand);text-shadow:0 0 14px rgba(47,212,255,.55);
}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-link{
  position:relative;font-size:15px;color:rgba(226,238,252,.78);
  padding:8px 12px;border-radius:999px;transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(47,212,255,.8);
  transform:translateX(-50%);transition:width .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{width:18px}
.nav-link.active{color:var(--brand);background:rgba(47,212,255,.12)}
.nav-link.active::after{display:none}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:11px 20px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;color:#04121a;
  background:var(--brand);border:1px solid var(--brand);
  box-shadow:0 0 22px rgba(47,212,255,.35);
  transition:box-shadow .22s ease,transform .22s ease,background .22s ease;
}
.nav-cta:hover{color:#04121a;background:#59dfff;transform:translateY(-1px);box-shadow:0 0 32px rgba(47,212,255,.58)}
.nav-toggle{
  display:none;width:42px;height:38px;border-radius:10px;
  background:rgba(47,212,255,.10);border:1px solid rgba(120,170,255,.28);
  color:var(--brand);font-size:18px;line-height:1;cursor:pointer;
}
@media (max-width:991px){
  .header-inner{height:56px;gap:12px}
  .logo{font-size:16px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#08111f;border-bottom:1px solid rgba(120,170,255,.18);
    padding:10px 20px 18px;
  }
  .site-header.nav-open .nav-links{display:flex}
  .nav-link{padding:14px 6px;border-radius:10px;border-bottom:1px solid rgba(120,170,255,.10);font-size:15px}
  .nav-link::after{display:none}
  .nav-link.active{background:rgba(47,212,255,.12)}
  .nav-cta{margin-top:14px;width:100%;padding:14px 20px;font-size:15px}
}

/* ---------- article hero ---------- */
.page-main{padding-bottom:96px}
.article-hero{
  position:relative;overflow:hidden;
  padding:108px 0 56px;
  background:var(--night) url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,10,20,.94) 0%,rgba(5,10,20,.80) 46%,rgba(5,10,20,.42) 100%),
             linear-gradient(180deg,rgba(5,10,20,.30) 0%,rgba(5,10,20,.86) 100%);
}
.article-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(198,216,240,.72);margin-bottom:18px}
.crumbs a{color:rgba(198,216,240,.78)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(198,216,240,.42)}
.crumbs .current{color:var(--brand);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  margin:0 0 20px;font-size:clamp(26px,3.6vw,44px);line-height:1.28;font-weight:800;
  color:#f2f8ff;letter-spacing:.01em;max-width:900px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(198,216,240,.82)}
.hero-meta .pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-family:var(--mono);font-size:12px;
  background:rgba(47,212,255,.13);border:1px solid rgba(47,212,255,.34);color:#b9edff;
}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(198,216,240,.5)}
@media (max-width:767px){
  .article-hero{padding:92px 0 40px}
}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;margin-top:-40px;position:relative;z-index:3}
@media (max-width:991px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:24px;margin-top:-28px}
}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow)}
.article-main{padding:0;overflow:hidden}
.cover-figure{margin:0;background:#eef5fc}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body{padding:32px}
@media (max-width:575px){.article-body{padding:22px 18px}}
.color-line{width:36px;height:3px;border-radius:3px;background:var(--brand);box-shadow:0 0 12px rgba(47,212,255,.7);margin-bottom:16px}

/* ---------- article body typography ---------- */
.article-body p{margin:0 0 1.1em;font-size:16px;line-height:1.9;color:var(--ink-2)}
.article-body h2{
  position:relative;margin:2.1em 0 .8em;padding-top:18px;
  font-size:26px;line-height:1.35;font-weight:800;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;top:0;left:0;width:36px;height:3px;border-radius:3px;
  background:var(--brand);box-shadow:0 0 12px rgba(47,212,255,.7);
}
.article-body h3{margin:1.8em 0 .6em;font-size:20px;font-weight:700;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em;color:var(--ink-2)}
.article-body li{margin-bottom:.5em;line-height:1.85}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;background:rgba(47,212,255,.07);
  box-shadow:inset 3px 0 14px -10px rgba(47,212,255,.9);
  color:var(--ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.4em 0 .6em;box-shadow:var(--shadow)}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--ink-3);text-align:center;margin-bottom:1.6em}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border:1px solid var(--line-strong);border-radius:12px;overflow:hidden;background:#fbfdff}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:rgba(47,212,255,.10);color:var(--ink);font-weight:700}
.article-body tbody tr:nth-child(even){background:rgba(18,58,108,.035)}
.article-body a{color:var(--brand-ink);text-decoration:underline;text-decoration-color:rgba(18,166,204,.4);text-underline-offset:3px}
.article-body a:hover{color:var(--brand-600)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body code{font-family:var(--mono);font-size:14px;background:var(--surface-2);padding:2px 6px;border-radius:6px}

/* ---------- empty state ---------- */
.empty-state{text-align:center;padding:40px 20px}
.empty-state .icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,212,255,.12);border:1px solid rgba(47,212,255,.32);
  color:var(--brand-ink);font-family:var(--mono);font-size:22px;font-weight:700;
}
.empty-state h2{font-size:20px;margin:0 0 8px;color:var(--ink)}
.empty-state p{color:var(--ink-3);margin:0 0 20px}

/* ---------- sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:992px){.side-sticky{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}}
.side-card{padding:22px}
.side-title{
  display:flex;align-items:center;gap:8px;margin:0 0 14px;
  font-size:12px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);
}
.side-title::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(47,212,255,.8)}
.reason-list{list-style:none;margin:0;padding:0}
.reason-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink-2);line-height:1.7}
.reason-list li:last-child{border-bottom:0;padding-bottom:0}
.reason-list .idx{font-family:var(--mono);font-size:12px;color:var(--brand-ink);padding-top:3px}
.rel-list{list-style:none;margin:0;padding:0}
.rel-list li + li{margin-top:12px}
.rel-item{display:block;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:#fafcff;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.rel-item:hover{border-color:rgba(47,212,255,.55);transform:translateY(-2px);box-shadow:var(--shadow)}
.rel-item .cat{font-family:var(--mono);font-size:11px;color:var(--brand-ink);letter-spacing:.08em}
.rel-item strong{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.55;margin:4px 0 2px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-item span.meta{font-family:var(--mono);font-size:11px;color:var(--ink-3)}
.side-cta{
  padding:22px;border-radius:var(--radius-card);
  background:linear-gradient(150deg,rgba(47,212,255,.16),rgba(47,212,255,.04));
  border:1px solid rgba(47,212,255,.3);
}
.side-cta h3{margin:0 0 8px;font-size:16px;color:var(--ink);font-weight:700}
.side-cta p{margin:0 0 14px;font-size:13px;color:var(--ink-2);line-height:1.75}

/* ---------- buttons ---------- */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-brand{background:var(--brand);border:1px solid var(--brand);color:#04121a;box-shadow:0 0 22px rgba(47,212,255,.35)}
.btn-brand:hover{color:#04121a;background:#59dfff;transform:translateY(-1px);box-shadow:0 0 34px rgba(47,212,255,.55)}
.btn-ghost{background:transparent;border:1px solid rgba(18,166,204,.45);color:var(--brand-ink)}
.btn-ghost:hover{background:rgba(47,212,255,.14);color:var(--brand-ink);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:13px}

/* ---------- tags & share ---------- */
.article-foot{padding:0 32px 32px}
@media (max-width:575px){.article-foot{padding:0 18px 22px}}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:6px 14px;border-radius:999px;font-size:12px;
  background:var(--surface-2);border:1px solid var(--line);color:var(--ink-2);
}
.tag:hover{border-color:rgba(47,212,255,.55);color:var(--brand-ink)}
.share-bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between}
.share-bar .share-group{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- related ---------- */
.section-block{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-head h2{margin:0;font-size:28px;font-weight:800;color:var(--ink)}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--ink-3)}
.section-link{font-size:14px;color:var(--brand-ink);white-space:nowrap}
.section-link:hover{color:var(--brand-600)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:767px){.related-grid{grid-template-columns:minmax(0,1fr)}}
.rel-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,212,255,.55)}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#e7f1fb}
.rel-card .rel-body{padding:18px}
.rel-card .cat{font-family:var(--mono);font-size:11px;color:var(--brand-ink);letter-spacing:.08em}
.rel-card h3{margin:6px 0 8px;font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card p{margin:0;font-size:13px;color:var(--ink-3);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- cta panel ---------- */
.cta-panel{
  margin-top:56px;padding:36px;
  border-radius:var(--radius-cover);
  background:linear-gradient(150deg,rgba(47,212,255,.16),rgba(255,255,255,.9) 62%);
  border:1px solid rgba(47,212,255,.34);
  box-shadow:var(--shadow);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-panel h2{margin:0 0 8px;font-size:24px;color:var(--ink)}
.cta-panel p{margin:0;font-size:14px;color:var(--ink-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:575px){.cta-panel{padding:24px 18px}.cta-panel h2{font-size:20px}}

/* ---------- footer ---------- */
.site-footer{background:#07101d;border-top:1px solid rgba(120,170,255,.16);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:26px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo{font-size:18px;margin-bottom:14px}
.footer-brand p{margin:0;font-size:13.5px;line-height:1.85;color:rgba(186,206,232,.66);max-width:340px}
.footer-col h4{margin:0 0 14px;font-size:12px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:rgba(186,206,232,.52);font-weight:600}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(214,230,250,.8);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:44px;padding:20px 0;
  border-top:1px solid rgba(120,170,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(186,206,232,.55);
}
.footer-bottom .mono{color:rgba(186,206,232,.45)}

/* roulang page: category1 */
:root{
  --brand:#12b8e6;
  --brand-600:#0a94bd;
  --brand-deep:#0b6f8f;
  --brand-soft:rgba(18,184,230,.12);
  --accent:#ff8a3d;
  --accent-soft:rgba(255,138,61,.14);
  --bg:#f4f9ff;
  --bg-soft:#eaf3ff;
  --surface:#ffffff;
  --ink:#0f1f31;
  --text:#26374a;
  --muted:#5e7488;
  --weak:#93a5b8;
  --line:rgba(21,66,110,.10);
  --line-strong:rgba(21,66,110,.18);
  --radius-card:20px;
  --radius-cover:22px;
  --radius-btn:12px;
  --radius-sm:14px;
  --shadow-sm:0 6px 18px rgba(19,60,110,.07);
  --shadow:0 18px 42px rgba(19,60,110,.11);
  --shadow-brand:0 12px 28px rgba(18,184,230,.28);
  --mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--text);
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand-600);
  --bs-link-hover-color:var(--brand-deep);
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:
    radial-gradient(900px 420px at 88% -8%, rgba(18,184,230,.16), transparent 62%),
    radial-gradient(760px 380px at 4% 6%, rgba(255,138,61,.10), transparent 60%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--brand-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:992px){ .container{padding-left:32px;padding-right:32px;} }

/* ================= Header / Nav ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(255,255,255,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(19,60,110,.08);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:17px;
  font-weight:800;
  color:var(--ink);
  white-space:nowrap;
  letter-spacing:.01em;
}
.logo:hover{color:var(--ink);}
.logo-ayx{
  font-family:var(--mono);
  font-weight:700;
  color:var(--brand-600);
  padding:0 6px;
  border-radius:8px;
  background:var(--brand-soft);
  letter-spacing:.06em;
  text-shadow:0 0 14px rgba(18,184,230,.45);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex-wrap:nowrap;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(18,184,230,.8);
  transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-link:hover{color:var(--brand-600);background:rgba(18,184,230,.07);}
.nav-link:hover::after{width:18px;}
.nav-link.active{
  color:var(--brand-600);
  background:var(--brand-soft);
  font-weight:600;
}
.nav-link.active::after{width:0;}
.nav-cta{
  display:inline-block;
  margin-left:10px;
  padding:10px 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  color:#ffffff;
  background:linear-gradient(135deg,var(--brand),var(--brand-600));
  box-shadow:var(--shadow-brand);
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.nav-cta:hover{
  color:#ffffff;
  transform:translateY(-1px);
  box-shadow:0 16px 32px rgba(18,184,230,.42);
  filter:saturate(115%);
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:#fff;
  color:var(--ink);
  font-size:20px;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--bg-soft);border-color:var(--brand);}

@media (max-width:991.98px){
  .header-inner{height:56px;gap:10px;}
  .logo{font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:10px 20px 22px;
    background:#ffffff;
    border-bottom:1px solid var(--line);
    box-shadow:0 22px 40px rgba(19,60,110,.14);
  }
  .site-header.is-open .nav-links{display:flex;}
  .nav-link{
    padding:14px 4px;
    border-radius:0;
    border-bottom:1px solid var(--line);
    font-size:16px;
  }
  .nav-link::after{display:none;}
  .nav-link.active{background:transparent;color:var(--brand-600);}
  .nav-cta{
    margin:16px 0 0;
    text-align:center;
    padding:13px 20px;
    border-radius:14px;
  }
}

/* ================= Breadcrumb ================= */
.crumb-bar{padding:20px 0 0;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--weak);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:var(--weak);opacity:.7;}
.crumb .current{color:var(--brand-600);font-weight:600;}

/* ================= Banner ================= */
.cat-banner{
  position:relative;
  margin-top:18px;
  border-radius:26px;
  overflow:hidden;
  min-height:272px;
  display:flex;
  align-items:center;
  background:#0f2f45 url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  box-shadow:var(--shadow);
  isolation:isolate;
}
.cat-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(100deg,rgba(9,40,62,.92) 0%,rgba(11,60,88,.74) 44%,rgba(16,120,155,.30) 100%);
  z-index:1;
}
.cat-banner::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:52%;
  background:linear-gradient(180deg,rgba(4,26,40,0),rgba(4,26,40,.55));
  z-index:1;
}
.banner-inner{
  position:relative;
  z-index:2;
  padding:38px 34px;
  max-width:760px;
}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  color:#d6f6ff;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.26);
  backdrop-filter:blur(8px);
}
.banner-tag i{color:#8ee9ff;}
.cat-banner h1{
  color:#ffffff;
  font-size:clamp(26px,3.6vw,40px);
  margin:16px 0 12px;
  letter-spacing:-.02em;
  text-shadow:0 4px 22px rgba(0,0,0,.35);
}
.cat-banner h1 .hl{
  color:#8ee9ff;
  font-family:var(--mono);
  font-weight:700;
}
.banner-sub{
  color:rgba(232,246,255,.9);
  font-size:15px;
  line-height:1.75;
  margin:0;
  max-width:620px;
}
.banner-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.badge-glass{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:12px;
  font-size:13px;
  color:#e6f7ff;
  background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(10px);
}
.badge-glass b{
  font-family:var(--mono);
  font-size:15px;
  color:#ffffff;
}
@media (max-width:767.98px){
  .cat-banner{min-height:0;border-radius:20px;}
  .banner-inner{padding:28px 20px;}
  .banner-sub{font-size:14px;}
}

/* ================= Tabs ================= */
.tab-strip-wrap{
  margin-top:26px;
  padding:8px;
  border-radius:999px;
  background:#ffffff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  overflow-x:auto;
  scrollbar-width:none;
}
.tab-strip-wrap::-webkit-scrollbar{display:none;}
.tab-strip{
  display:flex;
  align-items:center;
  gap:6px;
  min-width:max-content;
}
.tab-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border-radius:999px;
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.tab-item .idx{
  font-family:var(--mono);
  font-size:11px;
  color:var(--weak);
}
.tab-item:hover{background:var(--bg-soft);color:var(--brand-600);}
.tab-item:hover .idx{color:var(--brand-600);}
.tab-item.active{
  color:#ffffff;
  background:linear-gradient(135deg,var(--brand),var(--brand-600));
  box-shadow:0 8px 20px rgba(18,184,230,.32);
  font-weight:600;
}
.tab-item.active .idx{color:rgba(255,255,255,.78);}

/* ================= Section ================= */
.section{padding:64px 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(22px,2.5vw,30px);
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  bottom:8px;
  width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--accent));
}
.section-desc{
  color:var(--muted);
  font-size:14px;
  margin:8px 0 0;
  max-width:640px;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-600);
}
.link-more:hover{gap:10px;}

/* ================= Big Cover Cards ================= */
.cover-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:26px;
}
.cover-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.cover-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,184,230,.42);
  box-shadow:0 22px 44px rgba(19,60,110,.16);
}
.cover-media{
  position:relative;
  aspect-ratio:16/9;
  background:#dfeaf6;
  overflow:hidden;
}
.cover-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.cover-card:hover .cover-media img{transform:scale(1.04);}
.cover-chip{
  position:absolute;
  left:16px;
  top:16px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:#06384a;
  background:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.7);
  backdrop-filter:blur(6px);
}
.cover-num{
  position:absolute;
  right:16px;
  bottom:14px;
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:rgba(255,255,255,.92);
  text-shadow:0 2px 12px rgba(0,0,0,.45);
  letter-spacing:.04em;
}
.cover-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.cover-body h3{
  font-size:19px;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cover-body h3 a{color:var(--ink);}
.cover-card:hover .cover-body h3 a{color:var(--brand-600);}
.cover-body p{
  margin:0;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cover-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px dashed var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--weak);
}
.cover-meta .m-left{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;}
.pill{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  white-space:nowrap;
  color:var(--brand-deep);
  background:var(--brand-soft);
  border:1px solid rgba(18,184,230,.22);
}
.pill.warm{
  color:#a34f10;
  background:var(--accent-soft);
  border-color:rgba(255,138,61,.28);
}
.arrow-go{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  border-radius:50%;
  color:var(--brand-600);
  background:var(--brand-soft);
  transition:transform .22s ease,background .22s ease;
}
.cover-card:hover .arrow-go{transform:translateX(3px);background:rgba(18,184,230,.2);}

@media (max-width:900px){
  .cover-grid{grid-template-columns:1fr;gap:20px;}
}

/* ================= Steps ================= */
.steps{
  position:relative;
  padding:34px 30px;
  border-radius:24px;
  background:linear-gradient(160deg,rgba(18,184,230,.10),rgba(255,138,61,.07));
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.steps-track{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  position:relative;
}
.step{
  position:relative;
  padding:0 6px;
}
.step-dot{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  border-radius:16px;
  font-family:var(--mono);
  font-size:16px;
  font-weight:700;
  color:#ffffff;
  background:linear-gradient(135deg,var(--brand),var(--brand-600));
  box-shadow:0 10px 22px rgba(18,184,230,.32);
  margin-bottom:16px;
}
.step:nth-child(2) .step-dot{background:linear-gradient(135deg,#38c9a5,#0f9e86);box-shadow:0 10px 22px rgba(24,180,150,.28);}
.step:nth-child(3) .step-dot{background:linear-gradient(135deg,var(--accent),#e96a1f);box-shadow:0 10px 22px rgba(255,138,61,.3);}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{margin:0;font-size:14px;color:var(--muted);line-height:1.75;}
@media (max-width:820px){
  .steps{padding:26px 20px;}
  .steps-track{grid-template-columns:1fr;gap:24px;}
  .step{padding-left:0;}
}

/* ================= FAQ ================= */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(18,184,230,.34);box-shadow:var(--shadow-sm);}
.faq-q{margin:0;font-size:16px;font-weight:600;}
.faq-btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  transition:color .2s ease,background .2s ease;
}
.faq-btn:hover{color:var(--brand-600);background:rgba(18,184,230,.04);}
.faq-icon{
  position:relative;
  flex:0 0 22px;
  width:22px;
  height:22px;
  border-radius:8px;
  background:var(--brand-soft);
  color:var(--brand-600);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:currentColor;
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px;}
.faq-icon::after{width:2px;height:11px;transition:opacity .2s ease;}
.faq-btn[aria-expanded="true"]{color:var(--brand-600);}
.faq-btn[aria-expanded="true"] .faq-icon{background:rgba(18,184,230,.18);}
.faq-btn[aria-expanded="true"] .faq-icon::after{opacity:0;}
.faq-a{
  padding:0 22px 20px 22px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.85;
  border-left:3px solid var(--brand);
  margin-left:0;
  box-shadow:inset 0 1px 0 var(--line);
}
.faq-a p:last-child{margin-bottom:0;}

/* ================= Related ================= */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.related-card{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 20px;
  border-radius:var(--radius-sm);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.related-card:hover{
  transform:translateY(-3px);
  border-color:rgba(18,184,230,.4);
  box-shadow:0 16px 32px rgba(19,60,110,.14);
}
.related-ico{
  flex:0 0 44px;
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  font-size:19px;
  color:var(--brand-600);
  background:var(--brand-soft);
}
.related-card:nth-child(2) .related-ico{color:#0f9e86;background:rgba(24,180,150,.13);}
.related-card:nth-child(3) .related-ico{color:#d9661c;background:var(--accent-soft);}
.related-txt strong{
  display:block;
  font-size:15px;
  color:var(--ink);
  margin-bottom:2px;
}
.related-txt span{font-size:12.5px;color:var(--weak);}
@media (max-width:820px){
  .related-grid{grid-template-columns:1fr;}
}

/* ================= CTA ================= */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:26px;
  padding:40px 36px;
  background:
    linear-gradient(130deg,rgba(18,184,230,.14),rgba(255,138,61,.12)),
    #ffffff;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:240px;
  height:240px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,184,230,.22),transparent 68%);
  pointer-events:none;
}
.cta-text h2{font-size:clamp(20px,2.3vw,26px);margin-bottom:10px;}
.cta-text p{margin:0;color:var(--muted);font-size:14.5px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  color:#ffffff;
  background:linear-gradient(135deg,var(--brand),var(--brand-600));
  box-shadow:var(--shadow-brand);
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{
  color:#ffffff;
  transform:translateY(-2px);
  box-shadow:0 18px 34px rgba(18,184,230,.42);
  filter:saturate(112%);
}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(18,184,230,.42);
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
  background:rgba(255,255,255,.7);
  cursor:pointer;
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-ghost:hover{
  background:rgba(18,184,230,.12);
  border-color:var(--brand);
  color:var(--brand-deep);
  transform:translateY(-2px);
}
.btn-warm{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,138,61,.4);
  background:var(--accent-soft);
  color:#b8510f;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease,transform .2s ease;
}
.btn-warm:hover{background:rgba(255,138,61,.24);transform:translateY(-2px);color:#8f3d08;}
.copy-tip{
  flex:1 1 100%;
  font-size:13px;
  color:var(--brand-600);
  min-height:18px;
  margin:2px 0 0;
}

/* ================= Footer ================= */
.site-footer{
  margin-top:72px;
  padding:56px 0 26px;
  background:#eef5ff;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand .logo{font-size:17px;margin-bottom:14px;display:inline-flex;}
.footer-brand p{
  margin:0;
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
  max-width:340px;
}
.footer-col h4{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--weak);
  margin-bottom:14px;
  font-weight:700;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  font-size:14px;
  color:var(--muted);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col ul li a:hover{color:var(--brand-600);transform:translateX(2px);}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--weak);
}
.footer-bottom .mono{color:var(--brand-600);letter-spacing:.04em;}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:44px 0 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* small screens tweaks */
@media (max-width:575.98px){
  .section{padding:48px 0 0;}
  .section-head{margin-bottom:20px;}
  .cover-body{padding:18px 18px 20px;}
  .cta-panel{padding:28px 20px;}
  .btn-main,.btn-ghost,.btn-warm{width:100%;justify-content:center;}
  .cta-actions{width:100%;}
}

/* roulang page: category2 */
:root{
  --ink-900:#05070d;
  --ink-800:#0a1018;
  --ink-700:#101a2a;
  --ink-600:#0e1728;
  --brand:#2fd4ff;
  --brand-600:#12a6cc;
  --accent:#ff8a3d;
  --text:#e6eefb;
  --text-2:#9aa8bd;
  --text-3:#66758c;
  --line:rgba(120,170,255,.16);
  --line-soft:rgba(120,170,255,.09);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --glass-border:rgba(140,190,255,.18);
  --r-card:18px;
  --r-cover:22px;
  --r-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --zh:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --sp-section:96px;

  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text);
  --bs-border-color:var(--line);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:#7fe6ff;
  --bs-border-radius:12px;
  --bs-font-sans-serif:var(--zh);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--zh);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 82% -8%,rgba(47,212,255,.10),transparent 62%),
    radial-gradient(700px 420px at 4% 8%,rgba(255,138,61,.07),transparent 60%),
    var(--ink-900);
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#7fe6ff;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.2px;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.mono{font-family:var(--mono);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:992px){
  .container{padding-left:32px;padding-right:32px;}
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(5,7,13,.28);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,18,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  font-size:19px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--text);
  white-space:nowrap;
}
.logo:hover{color:var(--text);}
.logo-ayx{
  font-family:var(--mono);
  font-size:19px;
  color:var(--brand);
  text-shadow:0 0 18px rgba(47,212,255,.55);
  letter-spacing:1px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 2px;
  border-radius:999px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-4px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,212,255,.8);
  transform:translateX(-50%);
  transition:width .22s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{width:20px;}
.nav-link.active{
  color:var(--brand);
  background:rgba(47,212,255,.12);
  padding:6px 14px;
}
.nav-link.active::after{display:none;}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 20px;
  font-size:14px;
  font-weight:600;
  color:#04121a;
  background:var(--brand);
  border-radius:var(--r-btn);
  box-shadow:0 0 24px rgba(47,212,255,.35);
  transition:box-shadow .22s ease,transform .22s ease,background .22s ease;
  white-space:nowrap;
}
.nav-cta:hover{
  color:#04121a;
  background:#5ce0ff;
  transform:translateY(-1px);
  box-shadow:0 0 34px rgba(47,212,255,.55);
}
.nav-toggle{
  display:none;
  width:44px;height:40px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.04);
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.mobile-nav{display:none;}
.mobile-nav .m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 4px;
  font-size:16px;
  color:var(--text);
  border-bottom:1px solid var(--line-soft);
}
.mobile-nav .m-link:hover{color:var(--brand);}
.mobile-nav .m-link.active{color:var(--brand);}
.mobile-nav .m-cta{
  display:block;
  margin:18px 0 4px;
  text-align:center;
  padding:13px 18px;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:#04121a;
  font-weight:600;
  box-shadow:0 0 24px rgba(47,212,255,.35);
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:56px;}
  .logo{font-size:17px;}
  .logo-ayx{font-size:17px;}
  .mobile-nav{
    display:block;
    background:#070c15;
    border-top:1px solid var(--line);
    padding:8px 0 20px;
  }
  .mobile-nav.collapse:not(.show){display:none;}
}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.page-banner__bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center 40%;
  filter:saturate(.9);
}
.page-banner__bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(100deg,rgba(5,7,13,.95) 8%,rgba(5,7,13,.72) 52%,rgba(5,7,13,.35) 100%),
    linear-gradient(180deg,rgba(5,7,13,.35),rgba(5,7,13,.96));
}
.page-banner__inner{
  position:relative;
  padding:38px 0 40px;
  min-height:260px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.breadcrumb-trail{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:14px;
}
.breadcrumb-trail a{color:var(--text-2);}
.breadcrumb-trail a:hover{color:var(--brand);}
.breadcrumb-trail .sep{color:var(--text-3);}
.breadcrumb-trail .current{color:var(--brand);}
.banner-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:2px;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:12px;
}
.banner-eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,212,255,.7);
}
.page-banner h1{
  font-size:clamp(26px,3.6vw,42px);
  max-width:760px;
  margin-bottom:12px;
}
.page-banner .banner-sub{
  max-width:640px;
  font-size:15px;
  color:var(--text-2);
  margin:0;
}
.banner-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:22px;
}
.metric-chip{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:8px 14px;
  font-size:13px;
  color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:999px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.metric-chip b{
  font-family:var(--mono);
  font-size:15px;
  color:var(--brand);
  font-weight:600;
}

/* ---------- category tabs ---------- */
.cat-tabs-wrap{
  padding:22px 0 0;
  border-bottom:1px solid var(--line-soft);
}
.cat-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding-bottom:22px;
}
.cat-tab{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 18px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.03);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
  white-space:nowrap;
}
.cat-tab .idx{
  font-family:var(--mono);
  font-size:11px;
  color:var(--text-3);
}
.cat-tab:hover{
  color:var(--brand);
  border-color:rgba(47,212,255,.4);
  background:rgba(47,212,255,.08);
  transform:translateY(-1px);
}
.cat-tab.is-active{
  color:#04121a;
  background:var(--brand);
  border-color:var(--brand);
  box-shadow:0 0 22px rgba(47,212,255,.35);
  font-weight:600;
}
.cat-tab.is-active .idx{color:rgba(4,18,26,.6);}

/* ---------- section base ---------- */
.section{padding:64px 0;}
.section--tight{padding:48px 0;}
@media (min-width:992px){
  .section{padding:var(--sp-section) 0;}
  .section--tight{padding:64px 0;}
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
}
.section-head .sub{
  margin:8px 0 0;
  font-size:14px;
  color:var(--text-3);
  max-width:620px;
}
.section-head .more{
  font-size:14px;
  color:var(--brand);
  white-space:nowrap;
}
.section-head .more:hover{color:#7fe6ff;}

/* ---------- rank list ---------- */
.rank-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.rank-item{
  display:grid;
  grid-template-columns:70px 1fr 132px 32px;
  align-items:center;
  gap:20px;
  padding:20px 22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.rank-item:hover{
  transform:translateY(-3px);
  border-color:rgba(47,212,255,.45);
  box-shadow:var(--shadow),0 0 0 1px rgba(47,212,255,.35);
}
.rank-no{
  font-family:var(--mono);
  font-size:22px;
  font-weight:600;
  color:var(--text-3);
  letter-spacing:1px;
  transition:color .22s ease;
}
.rank-item:hover .rank-no{color:var(--brand);}
.rank-item.is-top .rank-no{color:var(--accent);}
.rank-body h3{
  font-size:17px;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rank-body h3 a{color:var(--text);}
.rank-body h3 a:hover{color:var(--brand);}
.rank-body p{
  margin:0;
  font-size:14px;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rank-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:8px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 11px;
  font-size:12px;
  line-height:1.7;
  color:var(--brand);
  background:rgba(47,212,255,.10);
  border:1px solid rgba(47,212,255,.26);
  border-radius:999px;
  white-space:nowrap;
}
.pill--accent{
  color:var(--accent);
  background:rgba(255,138,61,.10);
  border-color:rgba(255,138,61,.32);
}
.pill--muted{
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border-color:var(--line);
}
.rank-side{
  text-align:right;
}
.rank-time{
  font-family:var(--mono);
  font-size:13px;
  color:var(--text-3);
  display:block;
}
.rank-arrow{
  font-size:16px;
  color:var(--text-3);
  text-align:right;
  transition:color .2s ease,transform .2s ease;
}
.rank-item:hover .rank-arrow{color:var(--brand);transform:translateX(3px);}

/* ---------- scene cards ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.scene-card{
  padding:24px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,255,.42);
  box-shadow:var(--shadow),0 0 0 1px rgba(47,212,255,.3);
}
.icon-box{
  width:44px;height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  margin-bottom:16px;
  font-family:var(--mono);
  font-size:16px;
  font-weight:600;
  color:var(--brand);
  background:rgba(47,212,255,.10);
  border:1px solid rgba(47,212,255,.28);
  box-shadow:0 0 18px rgba(47,212,255,.16);
}
.icon-box.warm{
  color:var(--accent);
  background:rgba(255,138,61,.10);
  border-color:rgba(255,138,61,.3);
  box-shadow:0 0 18px rgba(255,138,61,.14);
}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:26px 24px 24px;
  border-radius:var(--r-card);
  background:var(--ink-700);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
}
.step::before{
  counter-increment:step;
  content:"0" counter(step);
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  letter-spacing:2px;
}
.step h3{font-size:17px;margin:10px 0 8px;}
.step p{font-size:14px;color:var(--text-2);margin:0;}
.step .bar{
  position:absolute;
  left:24px;right:24px;top:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,rgba(47,212,255,.75),rgba(47,212,255,0));
  box-shadow:0 0 14px rgba(47,212,255,.5);
}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--glass-border);}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--glass-border)!important;
  border-radius:14px!important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:border-color .2s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,212,255,.4)!important;
}
.accordion-item:has(.accordion-button:not(.collapsed)) .accordion-button{
  box-shadow:inset 3px 0 0 var(--brand),0 0 18px rgba(47,212,255,.18);
}
.accordion-button{
  background:transparent!important;
  color:var(--text)!important;
  font-size:16px;
  font-weight:600;
  padding:18px 54px 18px 22px;
  box-shadow:none!important;
}
.accordion-button:not(.collapsed){color:var(--text)!important;}
.accordion-button:focus{box-shadow:none!important;outline:none;}
.accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-3px;}
.accordion-button::after{
  content:"+";
  background-image:none!important;
  transform:none!important;
  font-family:var(--mono);
  font-size:20px;
  line-height:1;
  color:var(--brand);
  width:auto;height:auto;
  display:flex;
  align-items:center;
  justify-content:center;
  position:absolute;
  right:22px;
  top:50%;
  margin:0;
  translate:0 -50%;
}
.accordion-button:not(.collapsed)::after{content:"−";}
.accordion-body{
  padding:0 22px 20px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ---------- cta panel ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  padding:38px 32px;
  border-radius:var(--r-cover);
  background:var(--glass);
  border:1px solid var(--glass-border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(120,170,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,170,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.55;
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1;}
.cta-panel h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px;}
.cta-panel p{margin:0;font-size:14px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  text-decoration:none;
  cursor:pointer;
}
.btn-primary{
  background:var(--brand);
  color:#04121a;
  box-shadow:0 0 24px rgba(47,212,255,.35);
}
.btn-primary:hover{
  background:#5ce0ff;
  color:#04121a;
  transform:translateY(-1px);
  box-shadow:0 0 32px rgba(47,212,255,.55);
}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:rgba(47,212,255,.4);
}
.btn-ghost:hover{
  background:rgba(47,212,255,.12);
  color:#7fe6ff;
  border-color:rgba(47,212,255,.65);
}
.btn-accent{
  background:var(--accent);
  color:#1b0c02;
  box-shadow:0 0 22px rgba(255,138,61,.3);
}
.btn-accent:hover{
  background:#ffa268;
  color:#1b0c02;
  transform:translateY(-1px);
  box-shadow:0 0 30px rgba(255,138,61,.5);
}

/* ---------- related ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.related-card{
  display:block;
  padding:20px;
  border-radius:var(--r-card);
  background:var(--ink-700);
  border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.related-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,212,255,.42);
  box-shadow:var(--shadow),0 0 0 1px rgba(47,212,255,.28);
}
.related-card .num{
  font-family:var(--mono);
  font-size:12px;
  color:var(--text-3);
  letter-spacing:2px;
}
.related-card h3{
  font-size:16px;
  color:var(--text);
  margin:10px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card p{font-size:13px;color:var(--text-3);margin:0;}
.related-card:hover h3{color:var(--brand);}

/* ---------- back home ---------- */
.back-home{display:flex;justify-content:center;padding-top:32px;}

/* ---------- footer ---------- */
.site-footer{
  background:#04060b;
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  margin-top:16px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand .logo{margin-bottom:14px;display:inline-flex;}
.footer-brand p{
  font-size:14px;
  color:var(--text-3);
  max-width:340px;
  margin:0;
}
.footer-col h4{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:2px;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:16px;
  text-transform:uppercase;
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .related-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .rank-item{
    grid-template-columns:52px 1fr;
    grid-template-areas:
      "no body"
      "side side";
    row-gap:12px;
  }
  .rank-no{grid-area:no;font-size:18px;}
  .rank-body{grid-area:body;}
  .rank-side{
    grid-area:side;
    display:flex;
    align-items:center;
    justify-content:space-between;
    text-align:left;
  }
  .rank-arrow{display:none;}
  .scene-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-banner__inner{min-height:0;padding:32px 0 34px;}
}
@media (max-width:575px){
  .scene-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .rank-item{padding:18px;gap:14px;}
  .rank-body h3{font-size:16px;}
  .cat-tab{padding:8px 14px;font-size:13px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .banner-metrics{gap:8px;}
  .metric-chip{font-size:12px;padding:7px 12px;}
}

/* roulang page: category3 */
:root{
  --ink-900:#05070d;
  --ink-800:#0a1018;
  --ink-700:#101a2a;
  --brand:#2fd4ff;
  --brand-600:#12a6cc;
  --accent:#ff8a3d;
  --text:#e6eefb;
  --text-2:#9aa8bd;
  --text-3:#66758c;
  --line:rgba(120,170,255,.16);
  --line-soft:rgba(120,170,255,.09);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --glass-border:rgba(140,190,255,.18);
  --r-card:18px;
  --r-cover:22px;
  --r-btn:12px;
  --r-pill:999px;
  --sh:0 10px 30px rgba(0,0,0,.45);
  --sh-soft:0 8px 22px rgba(0,0,0,.32);
  --glow:0 0 24px rgba(47,212,255,.35);
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --bs-body-bg:#05070d;
  --bs-body-color:#e6eefb;
  --bs-border-color:rgba(120,170,255,.16);
  --bs-link-color:#2fd4ff;
  --bs-link-hover-color:#7de6ff;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--ink-900);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(rgba(120,170,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.9;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:#7de6ff}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
p{margin:0}
ul{list-style:none;margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
  position:relative;
  z-index:1;
}
@media (min-width:992px){
  .container{padding-left:32px;padding-right:32px}
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.scrolled{
  background:rgba(6,10,18,.82);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo:hover{color:var(--text)}
.logo-ayx{
  font-family:var(--mono);
  color:var(--brand);
  text-shadow:0 0 16px rgba(47,212,255,.6);
  margin:0 5px;
  letter-spacing:.06em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-links .nav-link{
  position:relative;
  display:inline-block;
  font-size:15px;
  color:var(--text-2);
  padding:8px 13px;
  border-radius:var(--r-pill);
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-links .nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px var(--brand);
  transform:translateX(-50%) scaleX(0);
  transition:transform .22s ease;
}
.nav-links .nav-link:hover{color:var(--brand);background:rgba(47,212,255,.06)}
.nav-links .nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-links .nav-link.active{
  color:var(--brand);
  background:rgba(47,212,255,.12);
  box-shadow:inset 0 0 0 1px rgba(47,212,255,.22);
}
.nav-links .nav-link.active::after{display:none}
.nav-cta{
  margin-left:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 20px;
  border-radius:var(--r-btn);
  background:var(--brand);
  color:#04121a;
  font-size:14px;
  font-weight:700;
  box-shadow:var(--glow);
  transition:box-shadow .22s ease,transform .22s ease,background .22s ease;
  white-space:nowrap;
}
.nav-cta:hover{
  color:#04121a;
  background:#5de0ff;
  transform:translateY(-1px);
  box-shadow:0 0 30px rgba(47,212,255,.55);
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;
  height:38px;
  padding:0 9px;
  background:rgba(47,212,255,.08);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (max-width:991.98px){
  .header-inner{height:56px}
  .nav-toggle{display:flex}
  .logo{font-size:15px}
  .nav-links{
    position:fixed;
    left:0;
    right:0;
    top:56px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:10px 20px 26px;
    background:#070b13;
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.55);
    max-height:calc(100vh - 56px);
    overflow-y:auto;
  }
  .nav-links.is-open{display:flex}
  .nav-links .nav-link{
    padding:14px 6px;
    border-radius:10px;
    border-bottom:1px solid var(--line-soft);
    font-size:16px;
  }
  .nav-links .nav-link::after{display:none}
  .nav-cta{margin:16px 0 0;width:100%;padding:14px 20px;font-size:15px}
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--text-3);font-family:var(--mono)}
.crumb .now{color:var(--brand);font-weight:600}

/* ---------- 分类横幅 ---------- */
.cat-banner{
  position:relative;
  padding:44px 0 46px;
  min-height:264px;
  display:flex;
  align-items:center;
  background-color:#070c15;
  background-image:
    linear-gradient(90deg,rgba(5,7,13,.95) 0%,rgba(5,7,13,.82) 48%,rgba(5,7,13,.44) 100%),
    linear-gradient(180deg,rgba(5,7,13,.35) 0%,rgba(5,7,13,.96) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-banner h1{
  font-size:clamp(28px,4.2vw,46px);
  letter-spacing:.01em;
  max-width:820px;
}
.cat-banner .lead{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
  max-width:640px;
}
.badge-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.mini-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  font-size:13px;
  color:var(--text-2);
  backdrop-filter:blur(14px) saturate(120%);
}
.mini-badge b{
  font-family:var(--mono);
  color:var(--brand);
  font-size:14px;
  font-weight:700;
}

/* ---------- 分类切换条 ---------- */
.cat-tabs-wrap{
  background:var(--ink-800);
  border-bottom:1px solid var(--line);
}
.cat-tabs{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:16px 0;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tabs a{
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  color:var(--text-2);
  font-size:14px;
  white-space:nowrap;
  transition:color .2s,border-color .2s,background .2s,box-shadow .2s;
}
.cat-tabs a:hover{
  color:var(--brand);
  border-color:rgba(47,212,255,.42);
  background:rgba(47,212,255,.07);
}
.cat-tabs a.is-active{
  color:#04121a;
  background:var(--brand);
  border-color:var(--brand);
  font-weight:700;
  box-shadow:0 0 20px rgba(47,212,255,.35);
}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media (min-width:992px){.section{padding:88px 0}}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.sec-head h2{
  font-size:clamp(22px,2.6vw,30px);
}
.sec-head .sub{
  font-size:14px;
  color:var(--text-3);
  margin-top:6px;
}
.text-link{
  font-size:14px;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
}
.text-link:hover{gap:10px}

/* ---------- 主体两栏 ---------- */
.layout-main{
  display:grid;
  grid-template-columns:minmax(0,1fr) 336px;
  gap:32px;
  align-items:start;
}
@media (max-width:991.98px){
  .layout-main{grid-template-columns:minmax(0,1fr);gap:28px}
}

/* ---------- 条目卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
@media (max-width:575.98px){
  .card-grid{grid-template-columns:minmax(0,1fr)}
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-soft);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,255,.4);
  box-shadow:var(--sh),0 0 0 1px rgba(47,212,255,.35);
}
.entry-thumb{
  aspect-ratio:16/9;
  background:#0d1524;
  overflow:hidden;
}
.entry-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.entry-card:hover .entry-thumb img{transform:scale(1.05)}
.entry-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.entry-body h3{
  font-size:19px;
  line-height:1.38;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-body .desc{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:12px;
  border-top:1px solid var(--line-soft);
}
.pill{
  display:inline-block;
  padding:3px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  color:var(--brand);
  background:rgba(47,212,255,.12);
  border:1px solid rgba(47,212,255,.26);
  white-space:nowrap;
}
.pill.warm{
  color:var(--accent);
  background:rgba(255,138,61,.12);
  border-color:rgba(255,138,61,.32);
}
.mono-meta{
  font-family:var(--mono);
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.02em;
  white-space:nowrap;
}

/* ---------- 侧栏 ---------- */
.side-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-soft);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  margin-bottom:20px;
}
.side-card h2{
  font-size:17px;
  margin-bottom:6px;
}
.side-card .side-note{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:12px;
}
.stat-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:11px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:14px;
  color:var(--text-2);
}
.stat-row:last-child{border-bottom:0;padding-bottom:0}
.stat-row .num{
  font-family:var(--mono);
  font-size:15px;
  color:var(--brand);
  font-weight:700;
}
.side-list li{
  position:relative;
  padding:9px 0 9px 22px;
  font-size:14px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.side-list li:last-child{border-bottom:0}
.side-list li::before{
  content:"";
  position:absolute;
  left:4px;
  top:18px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,212,255,.7);
}
.side-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  margin-top:16px;
  padding:11px 18px;
  border-radius:var(--r-btn);
  border:1px solid rgba(47,212,255,.4);
  color:var(--brand);
  font-size:14px;
  font-weight:600;
  background:transparent;
  transition:background .2s,color .2s;
}
.side-cta:hover{background:rgba(47,212,255,.12);color:var(--brand)}

/* ---------- 自查三步 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
@media (max-width:991.98px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.steps{grid-template-columns:minmax(0,1fr)}}
.step{
  position:relative;
  padding:24px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--glass-border);
  box-shadow:var(--sh-soft);
  transition:transform .22s,border-color .22s;
}
.step:hover{transform:translateY(-3px);border-color:rgba(47,212,255,.36)}
.step .step-num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  letter-spacing:.14em;
  display:inline-block;
  padding:2px 10px;
  border-radius:var(--r-pill);
  background:rgba(47,212,255,.12);
  border:1px solid rgba(47,212,255,.24);
}
.step h3{
  font-size:19px;
  margin:14px 0 8px;
}
.step p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
}
.step-bar{
  display:flex;
  align-items:center;
  gap:6px;
  margin-top:18px;
}
.step-bar i{
  display:block;
  height:4px;
  flex:1;
  border-radius:4px;
  background:rgba(47,212,255,.2);
}
.step-bar i.on{background:var(--brand);box-shadow:0 0 12px rgba(47,212,255,.6)}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq .accordion-item{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
  position:relative;
  box-shadow:var(--sh-soft);
}
.faq .accordion-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--brand);
  box-shadow:0 0 14px rgba(47,212,255,.8);
  opacity:0;
  transition:opacity .2s ease;
  z-index:2;
}
.faq .accordion-item:has(.accordion-button:not(.collapsed))::before{opacity:1}
.faq .accordion-button{
  position:relative;
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:18px 56px 18px 22px;
  box-shadow:none;
  border-radius:14px;
  line-height:1.5;
}
.faq .accordion-button::after{display:none}
.faq .accordion-button::before{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  font-family:var(--mono);
  font-size:22px;
  line-height:1;
  color:var(--brand);
  transition:transform .2s ease;
}
.faq .accordion-button:not(.collapsed){
  color:var(--brand);
  background:rgba(47,212,255,.07);
}
.faq .accordion-button:not(.collapsed)::before{content:"−"}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq .accordion-body{
  padding:4px 22px 20px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-cover);
  padding:36px 32px;
  background:linear-gradient(160deg,rgba(47,212,255,.12),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  box-shadow:var(--sh);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
}
.cta-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(120,170,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,170,255,.06) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.5;
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{
  font-size:clamp(21px,2.6vw,28px);
  margin-bottom:8px;
}
.cta-panel p{
  font-size:14px;
  color:var(--text-2);
  max-width:520px;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-glow,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-glow{
  background:var(--brand);
  color:#04121a;
  box-shadow:var(--glow);
}
.btn-glow:hover{
  background:#5de0ff;
  color:#04121a;
  transform:translateY(-1px);
  box-shadow:0 0 34px rgba(47,212,255,.55);
}
.btn-glow:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:rgba(47,212,255,.4);
}
.btn-ghost:hover{
  background:rgba(47,212,255,.12);
  color:var(--brand);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0)}
.copy-hint{
  font-size:13px;
  color:var(--accent);
  min-height:20px;
  margin-top:10px;
  font-family:var(--mono);
}

/* ---------- 相关推荐 ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
@media (max-width:991.98px){.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575.98px){.related-grid{grid-template-columns:minmax(0,1fr)}}
.related-card{
  display:block;
  padding:20px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--glass-border);
  color:var(--text);
  transition:transform .22s,border-color .22s,box-shadow .22s;
}
.related-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,255,.4);
  box-shadow:0 0 0 1px rgba(47,212,255,.3),var(--sh-soft);
  color:var(--text);
}
.related-card .idx{
  font-family:var(--mono);
  font-size:12px;
  color:var(--brand);
  letter-spacing:.14em;
}
.related-card h3{
  font-size:16px;
  margin:10px 0 6px;
}
.related-card p{
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.back-home{
  margin-top:26px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04060b;
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo{font-size:18px}
.footer-brand p{
  margin-top:14px;
  font-size:14px;
  color:var(--text-3);
  line-height:1.85;
  max-width:340px;
}
.footer-col h4{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col li{margin-bottom:11px}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
  display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .mono{font-family:var(--mono);letter-spacing:.04em}

/* ---------- 其它 ---------- */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}
@media (max-width:575.98px){
  .cat-banner{padding:34px 0 38px;min-height:0}
  .section{padding:48px 0}
  .cta-panel{padding:28px 22px}
  .side-card{padding:18px}
}

/* roulang page: category4 */
:root{
  --ink-900:#05070d;
  --ink-800:#0a1018;
  --ink-700:#101a2a;
  --brand:#2fd4ff;
  --brand-600:#12a6cc;
  --accent:#ff8a3d;
  --text:#e6eefb;
  --text-2:#9aa8bd;
  --text-3:#66758c;
  --line:rgba(120,170,255,.16);
  --line-soft:rgba(120,170,255,.09);
  --glass:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  --glass-border:rgba(140,190,255,.18);
  --radius-card:18px;
  --radius-cover:22px;
  --radius-btn:12px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --space-section:96px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;

  --bs-body-bg:#05070d;
  --bs-body-color:#e6eefb;
  --bs-border-color:rgba(120,170,255,.16);
  --bs-link-color:#2fd4ff;
  --bs-link-hover-color:#7ee6ff;
  --bs-border-radius:12px;
  --bs-border-radius-lg:18px;
  --bs-font-sans-serif:var(--font-sans);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--ink-900);
  background-image:
    linear-gradient(rgba(120,170,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,170,255,.028) 1px, transparent 1px);
  background-size:24px 24px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;background:#0d1524}
a{color:var(--brand);text-decoration:none;transition:color .2s ease, opacity .2s ease}
a:hover{color:#7ee6ff}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:20px;
}
@media (min-width:992px){.container{padding-inline:32px}}

.section{padding-block:64px}
@media (min-width:992px){.section{padding-block:96px}}
.section-tight{padding-block:40px}
@media (min-width:992px){.section-tight{padding-block:56px}}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(6,10,18,.86);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
  backdrop-filter:blur(14px) saturate(120%);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:17px;
  font-weight:700;
  color:var(--text);
  white-space:nowrap;
  letter-spacing:.02em;
}
.logo:hover{color:var(--text)}
.logo-ayx{
  font-family:var(--font-mono);
  font-weight:700;
  letter-spacing:.06em;
  color:var(--brand);
  text-shadow:0 0 14px rgba(47,212,255,.55);
  padding-inline:2px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease;
}
.nav-link:hover{color:var(--brand);background:rgba(47,212,255,.08)}
.nav-link.active{color:var(--brand);background:rgba(47,212,255,.12);box-shadow:inset 0 0 0 1px rgba(47,212,255,.22)}
.nav-cta{
  margin-left:8px;
  padding:10px 20px;
  border-radius:var(--radius-btn);
  background:var(--brand);
  color:#04121a;
  font-size:14px;
  font-weight:700;
  white-space:nowrap;
  box-shadow:0 0 24px rgba(47,212,255,.35);
  transition:box-shadow .22s ease, transform .22s ease, background .22s ease;
}
.nav-cta:hover{
  color:#04121a;
  background:#63e0ff;
  transform:translateY(-1px);
  box-shadow:0 0 32px rgba(47,212,255,.55);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--glass-border);
  border-radius:12px;
  background:rgba(255,255,255,.04);
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--brand);
  border-radius:2px;
  transition:transform .22s ease, opacity .22s ease;
}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:991px){
  .header-inner{height:56px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;
    inset:56px 0 0 0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:20px;
    background:#060a12;
    border-top:1px solid var(--line);
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .22s ease, transform .22s ease, visibility .22s;
    overflow-y:auto;
  }
  .nav-open .nav-links{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }
  .nav-link{
    padding:16px 8px;
    border-radius:10px;
    border-bottom:1px solid var(--line-soft);
    font-size:16px;
  }
  .nav-link.active{background:rgba(47,212,255,.1);box-shadow:none}
  .nav-cta{
    margin:22px 0 0;
    padding:14px 20px;
    text-align:center;
    font-size:15px;
  }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  line-height:1.3;
  transition:box-shadow .22s ease, transform .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
}
.btn-brand{
  background:var(--brand);
  color:#04121a;
  box-shadow:0 0 24px rgba(47,212,255,.35);
}
.btn-brand:hover{
  color:#04121a;
  background:#63e0ff;
  transform:translateY(-1px);
  box-shadow:0 0 34px rgba(47,212,255,.55);
}
.btn-ghost{
  background:transparent;
  border-color:rgba(47,212,255,.4);
  color:var(--brand);
}
.btn-ghost:hover{
  background:rgba(47,212,255,.12);
  color:var(--brand);
  border-color:rgba(47,212,255,.65);
}
.btn-soft{
  background:rgba(255,255,255,.05);
  border-color:var(--glass-border);
  color:var(--text);
}
.btn-soft:hover{background:rgba(47,212,255,.12);color:var(--text);border-color:rgba(47,212,255,.4)}
.btn-accent{
  background:var(--accent);
  color:#2a1206;
  box-shadow:0 0 22px rgba(255,138,61,.28);
}
.btn-accent:hover{background:#ffa268;color:#2a1206;transform:translateY(-1px);box-shadow:0 0 30px rgba(255,138,61,.45)}

/* ---------- pills / tags ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  white-space:nowrap;
  color:var(--brand);
  background:rgba(47,212,255,.1);
  border:1px solid rgba(47,212,255,.24);
}
.tag-warm{color:var(--accent);background:rgba(255,138,61,.1);border-color:rgba(255,138,61,.28)}
.tag-muted{color:var(--text-2);background:rgba(255,255,255,.04);border-color:var(--line)}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  min-height:260px;
  display:flex;
  align-items:flex-end;
  padding:56px 0 34px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(5,7,13,.95) 12%, rgba(5,7,13,.55) 58%, rgba(5,7,13,.25) 100%),
             linear-gradient(180deg, rgba(5,7,13,.25) 0%, rgba(5,7,13,.9) 100%);
}
.page-banner > .container{position:relative;z-index:2}
.breadcrumb-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:16px;
}
.breadcrumb-line a{color:var(--text-2)}
.breadcrumb-line a:hover{color:var(--brand)}
.breadcrumb-line .sep{color:var(--text-3)}
.breadcrumb-line .current{color:var(--brand)}
.page-banner h1{
  font-size:clamp(30px,4.4vw,48px);
  max-width:820px;
  text-wrap:balance;
}
.banner-sub{
  margin-top:14px;
  max-width:680px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.8;
}
.banner-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.banner-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(120%);
}
.banner-chip b{font-family:var(--font-mono);color:var(--brand);font-size:13px;letter-spacing:.04em}

/* ---------- category tabs ---------- */
.cat-tabs-wrap{
  position:relative;
  z-index:5;
  margin-top:-26px;
}
.cat-tabs{
  display:flex;
  gap:10px;
  padding:12px;
  border-radius:999px;
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow);
  backdrop-filter:blur(14px) saturate(120%);
  overflow-x:auto;
  scrollbar-width:none;
}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tab{
  flex:0 0 auto;
  padding:9px 20px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease, box-shadow .2s ease;
}
.cat-tab:hover{color:var(--brand);background:rgba(47,212,255,.1)}
.cat-tab.active{
  color:#04121a;
  font-weight:700;
  background:var(--brand);
  box-shadow:0 0 22px rgba(47,212,255,.4);
}
@media (max-width:575px){
  .cat-tabs{border-radius:18px}
  .cat-tab{padding:8px 16px;font-size:13px}
}

/* ---------- section heading ---------- */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:28px;
  display:flex;
  align-items:center;
  gap:12px;
}
.section-head h2::before{
  content:"";
  width:12px;height:12px;
  border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 16px rgba(47,212,255,.7);
  flex:0 0 auto;
  transform:rotate(45deg);
}
.section-head p{color:var(--text-2);font-size:14px;margin-top:8px;max-width:640px}
.section-head .more{
  font-size:14px;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.section-head .more:hover{gap:10px}

/* ---------- timeline ---------- */
.timeline{
  position:relative;
  padding-left:64px;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:20px;top:8px;bottom:8px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, rgba(47,212,255,.85), rgba(47,212,255,.18) 55%, rgba(47,212,255,.02));
  box-shadow:0 0 18px rgba(47,212,255,.25);
}
.tl-item{position:relative;margin-bottom:20px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-50px;top:30px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(47,212,255,.14), 0 0 16px rgba(47,212,255,.7);
}
.tl-card{
  display:block;
  padding:22px 24px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.tl-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,212,255,.4);
  box-shadow:0 16px 36px rgba(0,0,0,.5), 0 0 0 1px rgba(47,212,255,.28);
}
.tl-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.tl-date{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--brand);
}
.tl-card h3{
  font-size:20px;
  margin-bottom:8px;
  color:var(--text);
}
.tl-card h3 a{color:inherit}
.tl-card h3 a:hover{color:var(--brand)}
.tl-desc{
  color:var(--text-2);
  font-size:15px;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.tl-foot{
  margin-top:14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
}
.tl-foot .link{
  font-size:13px;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
@media (max-width:575px){
  .timeline{padding-left:44px}
  .timeline::before{left:12px}
  .tl-item::before{left:-38px;top:26px;width:10px;height:10px}
  .tl-card{padding:18px}
  .tl-card h3{font-size:18px}
}

/* ---------- steps / stats ---------- */
.step-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.step-card{
  position:relative;
  padding:26px 24px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
  transition:transform .22s ease, border-color .22s ease;
}
.step-card::before{
  content:"";
  position:absolute;left:0;right:0;top:0;
  height:3px;
  background:linear-gradient(90deg, var(--brand), rgba(47,212,255,0));
}
.step-card:nth-child(2)::before{background:linear-gradient(90deg, var(--accent), rgba(255,138,61,0))}
.step-card:nth-child(3)::before{background:linear-gradient(90deg,#7c8cff, rgba(124,140,255,0))}
.step-card:hover{transform:translateY(-4px);border-color:rgba(47,212,255,.35)}
.step-no{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text-3);
}
.step-card h3{font-size:19px;margin:10px 0 8px}
.step-card p{color:var(--text-2);font-size:14px;line-height:1.8}
@media (max-width:991px){.step-grid{grid-template-columns:1fr 1fr}}
@media (max-width:767px){.step-grid{grid-template-columns:1fr}}

/* ---------- related ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.rel-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,255,.4);
  box-shadow:0 16px 36px rgba(0,0,0,.5), 0 0 0 1px rgba(47,212,255,.28);
}
.rel-card .thumb{aspect-ratio:16/9;width:100%;background:#0d1524;overflow:hidden}
.rel-card .thumb img{width:100%;height:100%;transition:transform .35s ease}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-body{padding:16px 18px 18px}
.rel-body h3{
  font-size:16px;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-body h3 a{color:var(--text)}
.rel-body h3 a:hover{color:var(--brand)}
.rel-body p{font-size:13px;color:var(--text-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media (max-width:991px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.rel-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--glass-border);--bs-accordion-btn-focus-box-shadow:none}
.accordion-item{
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  border:1px solid var(--glass-border);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,212,255,.4);
  box-shadow:var(--shadow), 0 0 0 1px rgba(47,212,255,.25);
}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:18px 22px;
  gap:14px;
  box-shadow:none !important;
}
.accordion-button:not(.collapsed){
  color:var(--brand);
  background:rgba(47,212,255,.06);
  box-shadow:inset 3px 0 0 var(--brand) !important;
}
.accordion-button::after{display:none}
.accordion-button .faq-mark{
  margin-left:auto;
  width:26px;height:26px;
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:8px;
  border:1px solid rgba(47,212,255,.35);
  color:var(--brand);
  font-family:var(--font-mono);
  font-size:15px;
  line-height:1;
}
.faq-mark .m-minus{display:none}
.accordion-button:not(.collapsed) .faq-mark .m-plus{display:none}
.accordion-button:not(.collapsed) .faq-mark .m-minus{display:inline}
.accordion-body{
  padding:0 22px 20px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:26px;
  padding:44px 40px;
  background:linear-gradient(160deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-panel::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(120,170,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,170,255,.05) 1px, transparent 1px);
  background-size:24px 24px;
  opacity:.7;
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1}
.cta-panel h2{font-size:26px;margin-bottom:10px}
.cta-panel p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-note{
  margin-top:14px;
  font-size:13px;
  color:var(--brand);
  font-family:var(--font-mono);
  min-height:20px;
}
@media (max-width:767px){
  .cta-panel{padding:30px 22px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:80px;
  background:#04060b;
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{font-size:18px;margin-bottom:14px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.9;max-width:320px}
.footer-col h4{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col li{margin-bottom:10px}
.footer-col a{
  color:var(--text-2);
  font-size:14px;
  display:inline-block;
  transition:color .2s ease, transform .2s ease;
}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line-soft);
  color:var(--text-3);
  font-size:13px;
}
.footer-bottom .mono{letter-spacing:.06em}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{margin-top:56px;padding-top:44px}
}

/* ---------- misc ---------- */
.back-home{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
}
.back-home:hover{color:var(--brand)}
.divider{height:1px;background:var(--line-soft);margin-block:28px}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --bg:#f4f9fd;
  --bg-soft:#eaf4fb;
  --surface:#ffffff;
  --surface-soft:#f0f7fc;
  --ink:#12263a;
  --ink-soft:#4a6480;
  --ink-mute:#7d92a8;
  --brand:#0e9fc4;
  --brand-600:#0b83a3;
  --brand-soft:#e2f6fc;
  --brand-line:#bfe9f4;
  --accent:#ff8a3d;
  --accent-soft:#fff0e5;
  --line:#e0ecf5;
  --line-strong:#cfe3f0;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --pill:999px;
  --shadow-sm:0 4px 14px rgba(18,38,58,.06);
  --shadow-md:0 16px 38px rgba(18,38,58,.10);
  --shadow-brand:0 12px 26px rgba(14,159,196,.26);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --bs-body-bg:#f4f9fd;
  --bs-body-color:#12263a;
  --bs-border-color:#e0ecf5;
  --bs-link-color:#0b83a3;
  --bs-link-hover-color:#0e9fc4;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:.2px;color:var(--ink);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:992px){.container{padding:0 32px;}}
.mono{font-family:var(--font-mono);letter-spacing:.4px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--line);
  box-shadow:0 6px 22px rgba(18,38,58,.07);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:68px;flex-wrap:wrap;
}
.logo{
  display:inline-flex;align-items:center;gap:4px;
  font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.5px;
  padding:6px 0;white-space:nowrap;
}
.logo:hover{color:var(--ink);}
.logo-ayx{
  font-family:var(--font-mono);font-weight:700;color:var(--brand-600);
  background:var(--brand-soft);border:1px solid var(--brand-line);
  border-radius:8px;padding:0 7px;margin:0 2px;font-size:16px;
  box-shadow:0 0 0 3px rgba(14,159,196,.08);
}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--line-strong);border-radius:12px;
  background:var(--surface);cursor:pointer;padding:0 11px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-soft);transition:background .2s ease;}
.nav-toggle:hover span{background:var(--brand);}
.nav-collapse{width:100%;}
.nav-links{display:flex;flex-direction:column;gap:2px;padding:10px 0 18px;}
.nav-link{
  display:block;padding:11px 14px;font-size:15px;font-weight:600;color:var(--ink-soft);
  border-radius:var(--pill);transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-soft);}
.nav-link.active{color:var(--brand-600);background:var(--brand-soft);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:10px;padding:12px 22px;border-radius:var(--pill);
  background:var(--accent);color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 10px 22px rgba(255,138,61,.32);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-cta:hover{color:#fff;background:#f9781f;transform:translateY(-1px);box-shadow:0 14px 28px rgba(255,138,61,.42);}
@media (min-width:992px){
  .header-inner{flex-wrap:nowrap;min-height:72px;}
  .nav-toggle{display:none;}
  .nav-collapse.collapse{display:block !important;width:auto;}
  .nav-collapse{width:auto;}
  .nav-links{flex-direction:row;align-items:center;gap:6px;padding:0;}
  .nav-link{padding:9px 15px;}
  .nav-cta{margin-top:0;margin-left:12px;padding:11px 20px;}
}

/* ---------- Banner ---------- */
.cat-banner{
  position:relative;overflow:hidden;
  border-radius:0 0 32px 32px;
  background:#dceef7;
  min-height:250px;
  display:flex;align-items:flex-end;
}
.cat-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center 35%;
  opacity:.9;
}
.cat-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.88) 42%,rgba(255,255,255,.42) 72%,rgba(255,255,255,.16) 100%);
}
.banner-inner{position:relative;z-index:2;width:100%;padding:34px 0 30px;}
.breadcrumb-line{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--ink-mute);margin-bottom:16px;
}
.breadcrumb-line a{color:var(--ink-soft);font-weight:600;}
.breadcrumb-line a:hover{color:var(--brand-600);}
.breadcrumb-line .sep{color:var(--line-strong);}
.breadcrumb-line .current{color:var(--brand-600);font-weight:700;}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--brand-line);
  color:var(--brand-600);font-size:12px;font-weight:700;letter-spacing:1px;
  padding:6px 14px;border-radius:var(--pill);margin-bottom:14px;
  box-shadow:var(--shadow-sm);
}
.banner-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.cat-banner h1{
  font-size:clamp(26px,4vw,42px);
  line-height:1.24;max-width:16em;
  color:var(--ink);
}
.cat-banner h1 .hl{color:var(--brand-600);}
.banner-desc{
  margin-top:14px;max-width:640px;
  font-size:15px;color:var(--ink-soft);line-height:1.9;
}
.banner-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.stat-chip{
  display:inline-flex;align-items:baseline;gap:7px;
  background:rgba(255,255,255,.9);border:1px solid var(--line);
  border-radius:var(--pill);padding:7px 15px;
  font-size:12.5px;color:var(--ink-soft);box-shadow:var(--shadow-sm);
}
.stat-chip b{font-family:var(--font-mono);font-size:15px;color:var(--brand-600);font-weight:700;}
@media (min-width:992px){.cat-banner{min-height:268px;}}

/* ---------- Category tabs ---------- */
.cat-tabs-wrap{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 16px rgba(18,38,58,.04);
}
.cat-tabs{
  display:flex;gap:10px;flex-wrap:nowrap;overflow-x:auto;
  padding:16px 0;scrollbar-width:none;-ms-overflow-style:none;
}
.cat-tabs::-webkit-scrollbar{display:none;}
.cat-tab{
  flex:0 0 auto;padding:10px 20px;border-radius:var(--pill);
  font-size:14px;font-weight:600;color:var(--ink-soft);
  background:var(--surface-soft);border:1px solid transparent;
  white-space:nowrap;transition:all .2s ease;
}
.cat-tab:hover{color:var(--brand-600);background:var(--brand-soft);border-color:var(--brand-line);}
.cat-tab.active{
  color:#fff;background:var(--brand-600);border-color:var(--brand-600);
  box-shadow:var(--shadow-brand);
}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
@media (min-width:992px){.section{padding:88px 0;}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:18px;flex-wrap:wrap;margin-bottom:30px;
}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:2px;color:var(--brand-600);text-transform:uppercase;
  margin-bottom:10px;
}
.section-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);}
.section-head h2{font-size:clamp(22px,3vw,30px);}
.section-head .sub{margin-top:8px;font-size:14.5px;color:var(--ink-mute);max-width:56ch;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand-600);
  padding:8px 4px;border-radius:8px;
}
.link-more:hover{gap:10px;color:var(--brand);}

/* ---------- Filter pills ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;
}
.filter-pill{
  padding:9px 18px;border-radius:var(--pill);border:1px solid var(--line-strong);
  background:var(--surface);color:var(--ink-soft);font-size:13.5px;font-weight:600;
  cursor:pointer;transition:all .2s ease;
}
.filter-pill:hover{color:var(--brand-600);border-color:var(--brand-line);background:var(--brand-soft);}
.filter-pill.active{
  color:#fff;background:var(--brand-600);border-color:var(--brand-600);
  box-shadow:var(--shadow-brand);
}

/* ---------- Compact grid cards ---------- */
.compact-grid{
  display:grid;grid-template-columns:1fr;gap:16px;
}
@media (min-width:576px){.compact-grid{grid-template-columns:repeat(2,1fr);gap:18px;}}
@media (min-width:992px){.compact-grid{grid-template-columns:repeat(3,1fr);gap:20px;}}
.q-card{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:18px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  height:100%;
}
.q-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:var(--brand-line);
}
.q-thumb{
  flex:0 0 54px;width:54px;height:54px;border-radius:14px;overflow:hidden;
  background:#e6f1f8;border:1px solid var(--line);
}
.q-thumb img{width:100%;height:100%;object-fit:cover;}
.q-body{min-width:0;flex:1;}
.q-meta{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:11.5px;font-weight:700;letter-spacing:.6px;margin-bottom:7px;
}
.q-cat{
  display:inline-block;padding:2px 10px;border-radius:var(--pill);
  background:var(--brand-soft);color:var(--brand-600);
  border:1px solid var(--brand-line);white-space:nowrap;
}
.q-time{font-family:var(--font-mono);color:var(--ink-mute);letter-spacing:.4px;}
.q-card h3{
  font-size:16px;line-height:1.5;font-weight:700;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.q-card h3 a{color:var(--ink);}
.q-card h3 a:hover{color:var(--brand-600);}
.q-sum{
  font-size:13.5px;color:var(--ink-mute);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.q-arrow{
  margin-left:auto;align-self:center;flex:0 0 auto;
  color:var(--brand);font-size:16px;font-weight:700;
  transition:transform .2s ease;
}
.q-card:hover .q-arrow{transform:translateX(4px);}
.filter-empty{
  display:none;padding:34px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--line-strong);
  border-radius:var(--radius-md);color:var(--ink-mute);font-size:14px;
}

/* ---------- Process / steps ---------- */
.process-panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px 22px;
  box-shadow:var(--shadow-sm);
}
@media (min-width:992px){.process-panel{padding:40px 38px;}}
.steps{
  display:grid;grid-template-columns:1fr;gap:22px;
}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);gap:26px;}}
@media (min-width:992px){.steps{grid-template-columns:repeat(4,1fr);gap:22px;}}
.step{
  position:relative;padding:20px 18px 18px;
  background:var(--surface-soft);border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--brand-line);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-soft);border:1px solid var(--brand-line);
  color:var(--brand-600);font-family:var(--font-mono);font-weight:700;font-size:14px;
  margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:6px;}
.step p{font-size:13.5px;color:var(--ink-mute);line-height:1.8;}
.step-line{display:none;}
@media (min-width:992px){
  .steps{position:relative;}
  .steps::before{
    content:"";position:absolute;left:8px;right:8px;top:44px;height:2px;
    background:linear-gradient(90deg,var(--brand-line),var(--line));
    z-index:0;
  }
  .step{position:relative;z-index:1;background:var(--surface);}
}

/* ---------- Checklist ---------- */
.check-panel{
  background:linear-gradient(160deg,#ffffff 0%,#f2fafe 100%);
  border:1px solid var(--brand-line);
  border-radius:var(--radius-lg);
  padding:26px 22px;
  box-shadow:var(--shadow-sm);
}
@media (min-width:992px){.check-panel{padding:36px 34px;}}
.check-list{display:grid;gap:14px;}
@media (min-width:768px){.check-list{grid-template-columns:repeat(2,1fr);gap:16px;}}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:15px 16px;
}
.check-item .dot{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;margin-top:2px;
}
.check-item h4{font-size:14.5px;margin-bottom:3px;}
.check-item p{font-size:13px;color:var(--ink-mute);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--line);}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line) !important;
  border-radius:16px !important;
  overflow:hidden;margin-bottom:14px;
  box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--brand-line) !important;
  box-shadow:0 12px 28px rgba(14,159,196,.12);
}
.accordion-button{
  background:var(--surface);
  color:var(--ink);font-size:16px;font-weight:600;
  padding:18px 52px 18px 20px;
  border-radius:16px !important;
  box-shadow:none !important;
  line-height:1.6;
}
.accordion-button:not(.collapsed){
  background:var(--brand-soft);
  color:var(--brand-600);
  box-shadow:inset 3px 0 0 var(--brand) !important;
}
.accordion-button::after{
  background-image:none !important;
  content:"+";
  font-family:var(--font-mono);
  font-size:20px;font-weight:700;line-height:1;
  width:auto;height:auto;
  color:var(--brand);transform:none;
  position:absolute;right:20px;top:50%;
  margin-top:-10px;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-body{
  padding:4px 22px 22px;font-size:14.5px;color:var(--ink-soft);line-height:1.9;
}

/* ---------- Related ---------- */
.rel-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:576px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.rel-grid{grid-template-columns:repeat(3,1fr);gap:22px;}}
.rel-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-line);}
.rel-cover{aspect-ratio:16/9;background:#e6f1f8;overflow:hidden;}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .rel-cover img{transform:scale(1.04);}
.rel-body{padding:18px;}
.rel-body .rel-tag{
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:1px;
  color:var(--brand-600);margin-bottom:7px;display:block;
}
.rel-body h3{font-size:16px;margin-bottom:6px;}
.rel-body p{font-size:13.5px;color:var(--ink-mute);line-height:1.75;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(140deg,#e8f7fd 0%,#ffffff 55%,#fff3ea 100%);
  border:1px solid var(--brand-line);
  border-radius:var(--radius-lg);
  padding:34px 24px;
  box-shadow:var(--shadow-md);
}
@media (min-width:992px){.cta-panel{padding:48px 44px;}}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(14,159,196,.14) 1px,transparent 1px);
  background-size:22px 22px;opacity:.7;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;gap:22px;}
@media (min-width:992px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}}
.cta-inner h2{font-size:clamp(21px,2.8vw,28px);margin-bottom:8px;}
.cta-inner p{font-size:14.5px;color:var(--ink-soft);max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--pill);border:1px solid var(--brand-600);
  background:var(--brand-600);color:#fff;font-size:14.5px;font-weight:700;
  box-shadow:var(--shadow-brand);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-brand:hover{color:#fff;background:var(--brand);border-color:var(--brand);transform:translateY(-1px);box-shadow:0 16px 32px rgba(14,159,196,.36);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--pill);border:1px solid var(--brand-line);
  background:var(--surface);color:var(--brand-600);font-size:14.5px;font-weight:700;
  transition:transform .2s ease,background .2s ease,border-color .2s ease;
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-600);transform:translateY(-1px);}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--pill);border:1px solid var(--accent);
  background:var(--accent);color:#fff;font-size:14.5px;font-weight:700;
  box-shadow:0 12px 26px rgba(255,138,61,.32);
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-accent:hover{color:#fff;background:#f9781f;transform:translateY(-1px);box-shadow:0 16px 32px rgba(255,138,61,.42);}
.cta-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:1px;
  color:var(--brand-600);background:var(--surface);
  border:1px solid var(--brand-line);border-radius:var(--pill);
  padding:5px 14px;margin-bottom:14px;
}

/* ---------- Footer ---------- */
.site-footer{
  background:#0f2334;
  color:#c3d6e4;
  padding:56px 0 0;
  margin-top:40px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand .logo{color:#fff;margin-bottom:14px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand .logo-ayx{background:rgba(47,212,255,.14);border-color:rgba(47,212,255,.34);color:#7fe4ff;box-shadow:none;}
.footer-brand p{font-size:13.5px;line-height:1.9;color:#8fa9bd;max-width:34ch;}
.footer-col h4{
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:2px;
  color:#6f8aa0;text-transform:uppercase;margin-bottom:14px;
}
.footer-col li{margin-bottom:9px;}
.footer-col a{
  display:inline-block;font-size:13.5px;color:#c3d6e4;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:#7fe4ff;transform:translateX(2px);}
.footer-bottom{
  margin-top:36px;padding:20px 0 26px;
  border-top:1px solid rgba(140,190,255,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:#6f8aa0;
}
.footer-bottom .mono{color:#587289;}

/* ---------- utility ---------- */
.bg-soft-block{background:var(--bg-soft);}
.alt-section{background:#ffffff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}