/* roulang page: index */
:root{
  --bg-base:#0A0A0F;
  --bg-elev-1:#12121A;
  --bg-elev-2:#1A1A24;
  --brand:#C8FF3D;
  --brand-2:#FF3E7F;
  --hint:#FFB020;
  --ok:#3DDC97;
  --ink-1:#F2F4F8;
  --ink-2:#A5ACBA;
  --ink-3:#6C7382;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(200,255,61,.35);
  --glow:rgba(200,255,61,.28);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--ink-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease,opacity .16s ease;}
a:hover{color:#DCFF7A;}
h1,h2,h3,h4{font-weight:800;margin:0;line-height:1.25;letter-spacing:-.01em;}
p{margin:0 0 1.4em;color:var(--ink-2);}
p:last-child{margin-bottom:0;}
ul,ol{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{max-width:1200px;padding-left:20px;padding-right:20px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,10,15,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2) 55%,transparent);
  opacity:.75;
}
.header-inner{min-height:72px;display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-1);flex:0 0 auto;}
.brand:hover{color:var(--ink-1);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(200,255,61,.16),rgba(255,62,127,.14));
  border:1px solid var(--line-neon);
  box-shadow:0 0 20px -8px var(--glow);
}
.brand-mark svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;align-items:baseline;gap:6px;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--brand);letter-spacing:.22em;font-family:var(--mono);}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:var(--r-sm);
  color:var(--ink-2);font-size:15px;font-weight:600;
  transition:color .16s ease,background .16s ease;
}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-main a:hover{color:var(--ink-1);background:rgba(255,255,255,.04);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.active{color:var(--brand);text-shadow:0 0 14px var(--glow);}
.nav-main a.active::after{transform:scaleX(1);}
.nav-main a.active::before{
  content:"";position:absolute;top:2px;left:50%;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 12px var(--glow);
}
.header-cta{margin-left:12px;}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#0A0A0F;border:1px solid var(--brand);
  font-size:15px;font-weight:700;line-height:1;
  padding:13px 22px;border-radius:var(--r-md);
  transition:transform .16s ease,box-shadow .16s ease,filter .16s ease;
  min-height:44px;cursor:pointer;
}
.btn-neon:hover{color:#0A0A0F;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 14px 30px -14px var(--glow);}
.btn-neon:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand);border:1px solid var(--line-neon);
  font-size:15px;font-weight:600;line-height:1;padding:13px 22px;border-radius:var(--r-md);
  transition:background .16s ease,transform .16s ease;min-height:44px;cursor:pointer;
}
.btn-ghost:hover{background:rgba(200,255,61,.08);color:var(--brand);transform:translateY(-1px);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand);border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--brand);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--bg-elev-1);color:var(--ink-1);
  align-items:center;justify-content:center;margin-left:auto;cursor:pointer;
}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--bg-base);}
.mobile-panel.show{display:block;}
.mobile-panel a{display:block;padding:15px 20px;color:var(--ink-1);font-size:17px;font-weight:600;border-bottom:1px solid var(--line);}
.mobile-panel a.active{color:var(--brand);}
.mobile-panel .mobile-cta{padding:16px 20px 22px;}
.mobile-panel .mobile-cta .btn-neon{width:100%;}
/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:96px 0 84px;
  background-image:linear-gradient(100deg,rgba(10,10,15,.97) 0%,rgba(10,10,15,.9) 46%,rgba(10,10,15,.58) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.1;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero::after{
  content:"";position:absolute;left:-10%;top:20%;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,61,.14),transparent 66%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.16em;color:var(--brand);
  border:1px solid var(--line-neon);border-radius:999px;padding:7px 14px;
  background:rgba(200,255,61,.06);margin-bottom:24px;
}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--glow);animation:pulse 2.6s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.42;transform:scale(.82);}}
.hero h1{font-size:clamp(30px,5.2vw,58px);line-height:1.16;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:640px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.fact-row{display:flex;flex-wrap:wrap;gap:14px 34px;border-top:1px solid var(--line);padding-top:22px;}
.fact{display:flex;flex-direction:column;gap:2px;}
.fact-num{font-family:var(--mono);font-size:16px;font-weight:600;color:var(--brand);}
.fact-label{font-size:13px;color:var(--ink-3);}
.hero-card{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-elev-1);
  box-shadow:0 30px 60px -34px rgba(0,0,0,.9);
}
.hero-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-card figcaption{
  padding:14px 18px;font-size:13.5px;color:var(--ink-2);
  background:linear-gradient(180deg,rgba(18,18,26,.6),var(--bg-elev-1));
  border-top:1px solid var(--line);
}
.corner{position:absolute;width:18px;height:18px;border:2px solid var(--brand);pointer-events:none;}
.corner.tl{left:12px;top:12px;border-right:0;border-bottom:0;}
.corner.tr{right:12px;top:12px;border-left:0;border-bottom:0;}
.corner.bl{left:12px;bottom:12px;border-right:0;border-top:0;}
.corner.br{right:12px;bottom:12px;border-left:0;border-top:0;}
/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:80px;z-index:1020;
  background:rgba(10,10,15,.88);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none;}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-scroll a{
  flex:0 0 auto;font-size:13.5px;font-weight:600;color:var(--ink-2);
  border:1px solid var(--line);border-radius:999px;padding:7px 16px;
  background:var(--bg-elev-1);transition:all .16s ease;
}
.anchor-scroll a:hover{color:var(--ink-1);border-color:var(--line-neon);}
.anchor-scroll a.on{color:var(--brand);background:rgba(200,255,61,.12);border-color:var(--line-neon);}
/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-elev-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.section-title{font-size:clamp(24px,3.2vw,38px);}
.section-title span{color:var(--brand);}
.section-sub{font-size:15.5px;color:var(--ink-2);max-width:660px;margin-top:12px;}
.kicker{font-family:var(--mono);font-size:12.5px;letter-spacing:.18em;color:var(--brand-2);margin-bottom:12px;display:block;}
/* ---------- feature ---------- */
.feature-main{
  display:flex;flex-direction:column;height:100%;
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg-elev-1);
  overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.feature-main:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:0 18px 40px -18px var(--glow);}
.feature-main img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.feature-main .pad{padding:28px;}
.feature-main h3{font-size:22px;margin-bottom:12px;}
.feature-mini{
  height:100%;padding:24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--bg-elev-1);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.feature-mini:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:0 18px 40px -18px var(--glow);}
.feature-mini i{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  background:rgba(200,255,61,.1);border:1px solid var(--line-neon);
  color:var(--brand);font-size:17px;margin-bottom:16px;
}
.feature-mini h3{font-size:18px;margin-bottom:8px;}
.feature-mini p{font-size:14.5px;line-height:1.8;margin:0;}
/* ---------- channel cards ---------- */
.channel-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg-elev-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:0 18px 40px -18px var(--glow);}
.channel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.channel-card .pad{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.channel-tag{
  align-self:flex-start;font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  color:var(--brand);background:rgba(200,255,61,.1);border:1px solid var(--line-neon);
  border-radius:999px;padding:5px 12px;
}
.channel-card h3{font-size:20px;}
.channel-card p{font-size:14.5px;line-height:1.8;}
/* ---------- steps + tabs ---------- */
.steps{position:relative;padding-left:6px;}
.steps::before{
  content:"";position:absolute;left:21px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(255,62,127,.5),transparent);
}
.step{position:relative;display:flex;gap:18px;padding:0 0 26px 0;}
.step:last-child{padding-bottom:0;}
.step-no{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--brand);
  background:var(--bg-base);border:1px solid var(--line-neon);box-shadow:0 0 18px -6px var(--glow);
}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{font-size:14.5px;margin:0;line-height:1.8;}
.demo-tabs{
  border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg-elev-1);
  padding:22px;height:100%;
}
.demo-tabs .nav-tabs{border-bottom:1px solid var(--line);gap:6px;}
.demo-tabs .nav-tabs .nav-link{
  border:1px solid transparent;border-radius:999px;color:var(--ink-2);
  font-size:14px;font-weight:600;padding:8px 16px;background:transparent;
}
.demo-tabs .nav-tabs .nav-link:hover{color:var(--ink-1);background:rgba(255,255,255,.04);}
.demo-tabs .nav-tabs .nav-link.active{
  color:var(--brand);background:rgba(200,255,61,.12);border-color:var(--line-neon);
}
.tab-panel{padding-top:20px;}
.tab-panel img{border-radius:var(--r-md);aspect-ratio:16/10;object-fit:cover;margin-bottom:16px;width:100%;}
.tab-panel p{font-size:14.5px;line-height:1.85;margin:0;}
/* ---------- proof ---------- */
.proof-card{
  height:100%;padding:24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--bg-base);transition:transform .2s ease,border-color .2s ease;
}
.proof-card:hover{transform:translateY(-4px);border-color:var(--line-neon);}
.proof-card i{color:var(--brand-2);font-size:18px;margin-bottom:14px;display:block;}
.proof-card h3{font-size:17px;margin-bottom:8px;}
.proof-card p{font-size:14px;margin:0;line-height:1.8;}
.marquee{
  margin-top:36px;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:14px 0;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.marquee-track{display:flex;gap:40px;width:max-content;animation:slide 26s linear infinite;}
.marquee-track span{font-family:var(--mono);font-size:13px;color:var(--ink-3);letter-spacing:.08em;white-space:nowrap;}
.marquee-track span b{color:var(--brand);font-weight:600;}
@keyframes slide{from{transform:translateX(0);}to{transform:translateX(-50%);}}
/* ---------- tiers ---------- */
.tier{
  position:relative;height:100%;display:flex;flex-direction:column;gap:18px;
  padding:28px 24px;border-radius:var(--r-lg);border:1px solid var(--line);
  background:var(--bg-base);transition:transform .2s ease,border-color .2s ease;
}
.tier:hover{transform:translateY(-4px);border-color:var(--line-neon);}
.tier.featured{
  border-color:var(--line-neon);background:linear-gradient(180deg,rgba(200,255,61,.07),var(--bg-elev-1));
  box-shadow:0 22px 50px -26px var(--glow);z-index:2;
}
.tier-flag{
  position:absolute;top:-12px;left:24px;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:#0A0A0F;background:var(--brand-2);border-radius:999px;padding:4px 12px;
}
.tier-name{font-size:18px;font-weight:800;}
.tier-price{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;}
.tier-price small{display:block;font-family:var(--sans);font-size:13px;color:var(--ink-3);font-weight:400;margin-top:6px;}
.tier ul{display:flex;flex-direction:column;gap:11px;margin:4px 0 8px;}
.tier li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.tier li i{color:var(--brand);font-size:13px;margin-top:6px;}
.tier .btn-ghost,.tier .btn-neon{margin-top:auto;width:100%;}
/* ---------- news ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg-elev-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:0 18px 40px -18px var(--glow);}
.news-thumb{display:block;position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-elev-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-thumb-fallback{
  display:block;width:100%;height:100%;
  background:linear-gradient(135deg,rgba(200,255,61,.12),rgba(255,62,127,.12));
}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-badge{
  align-self:flex-start;font-size:12px;font-family:var(--mono);color:var(--brand);
  background:rgba(200,255,61,.1);border:1px solid var(--line-neon);border-radius:999px;padding:4px 11px;
}
.news-title{font-size:17px;line-height:1.5;font-weight:700;}
.news-title a{color:var(--ink-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--brand);}
.news-desc{
  font-size:14px;color:var(--ink-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12.5px;color:var(--ink-3);
  border-top:1px solid var(--line);padding-top:14px;
}
.empty-state{
  text-align:center;padding:56px 24px;border-radius:var(--r-lg);
  border:1px dashed var(--line);background:var(--bg-elev-1);
}
.empty-state i{font-size:26px;color:var(--brand);margin-bottom:16px;display:block;}
.empty-state p{margin-bottom:20px;}
/* ---------- faq ---------- */
.accordion-custom .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.accordion-custom .accordion-button{
  background:transparent;color:var(--ink-1);
  font-size:17px;font-weight:600;padding:22px 44px 22px 0;
  box-shadow:none;gap:14px;line-height:1.6;
}
.accordion-custom .accordion-button:not(.collapsed){color:var(--brand);}
.accordion-custom .accordion-button::after{
  background-image:none;content:"+";font-family:var(--mono);font-size:20px;font-weight:400;
  color:var(--brand);display:grid;place-items:center;width:24px;height:24px;
  transition:transform .2s ease;
}
.accordion-custom .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-custom .accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-custom .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;
  background:var(--brand);border-radius:2px;
}
.accordion-custom .accordion-button{position:relative;padding-left:18px;}
.accordion-custom .accordion-body{
  padding:0 0 22px 18px;font-size:15px;line-height:1.9;color:var(--ink-2);
}
/* ---------- cta ---------- */
.cta-wrap{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  border:1px solid var(--line);background:var(--bg-elev-1);padding:56px 48px;
}
.cta-wrap::before{
  content:"";position:absolute;right:-120px;top:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,61,.12),transparent 68%);
}
.cta-wrap h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.cta-wrap>.row{position:relative;z-index:2;}
.form-card{
  background:var(--bg-base);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;
}
.form-card label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:7px;}
.form-card .form-control{
  background:var(--bg-elev-1);border:1px solid var(--line);color:var(--ink-1);
  border-radius:var(--r-sm);padding:12px 14px;font-size:14.5px;
}
.form-card .form-control::placeholder{color:var(--ink-3);}
.form-card .form-control:focus{
  background:var(--bg-elev-1);border-color:var(--brand);color:var(--ink-1);
  box-shadow:0 0 0 3px rgba(200,255,61,.12);
}
.form-note{font-size:12.5px;color:var(--ink-3);margin:12px 0 0;}
.form-tip{font-size:13.5px;color:var(--ok);margin:12px 0 0;display:none;}
.form-tip.show{display:block;}
/* ---------- footer ---------- */
.site-footer{
  position:relative;border-top:1px solid var(--line);background:#08080C;padding:64px 0 28px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),transparent);
}
.footer-title{font-size:15px;font-weight:600;margin-bottom:18px;position:relative;padding-left:16px;}
.footer-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:10px;height:2px;background:var(--brand);border-radius:2px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--ink-3);transition:color .16s ease,transform .16s ease;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-about{font-size:14px;color:var(--ink-3);line-height:1.85;max-width:320px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);font-family:var(--mono);
}
/* ---------- floating cta ---------- */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:1040;display:flex;align-items:center;gap:0;}
.float-main{
  display:inline-flex;align-items:center;gap:9px;background:var(--brand);color:#0A0A0F;
  font-size:15px;font-weight:700;padding:14px 22px;border-radius:999px;min-width:150px;justify-content:center;
  box-shadow:0 16px 34px -16px var(--glow);transition:transform .16s ease,filter .16s ease;
}
.float-main:hover{color:#0A0A0F;transform:translateY(-2px);filter:brightness(1.07);}
.float-more{
  display:none;flex-direction:column;gap:8px;margin-left:10px;padding:12px;
  background:var(--bg-elev-2);border:1px solid var(--line-neon);border-radius:var(--r-lg);
}
.float-cta:hover .float-more{display:flex;}
.float-more a{font-size:13.5px;color:var(--ink-2);white-space:nowrap;}
.float-more a:hover{color:var(--brand);}
/* ---------- animation ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:none;transition:opacity .42s ease-out,transform .42s ease-out;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;}
  .marquee-track{animation:none;}
  .pulse-dot{animation:none;}
  html{scroll-behavior:auto;}
}
/* ---------- responsive ---------- */
@media (max-width:1399px){
  .container{max-width:1160px;}
}
@media (max-width:1199px){
  .hero{padding:84px 0 72px;}
  .hero-card{margin-top:40px;}
  .anchor-bar{top:72px;}
}
@media (max-width:991px){
  .nav-main,.header-cta{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{min-height:60px;}
  .section{padding:72px 0;}
  .cta-wrap{padding:40px 28px;}
  .anchor-bar{top:60px;}
  .float-cta{right:16px;bottom:18px;}
}
@media (max-width:767px){
  body{padding-bottom:78px;font-size:15.5px;}
  .section{padding:56px 0;}
  .hero{padding:64px 0 56px;}
  .hero-lead{font-size:16px;}
  .hero-card img{max-height:320px;}
  .section-head{margin-bottom:32px;}
  .feature-main .pad{padding:22px;}
  .cta-wrap{padding:32px 22px;}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;
    background:rgba(10,10,15,.94);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);padding:10px 14px;gap:10px;
  }
  .float-main{flex:1;min-width:0;border-radius:var(--r-md);padding:13px 18px;font-size:14.5px;}
  .float-side{
    display:grid;place-items:center;width:46px;height:46px;border-radius:var(--r-md);
    border:1px solid var(--line-neon);color:var(--brand);flex:0 0 auto;
  }
  .float-more{display:none !important;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  .hero h1{font-size:clamp(26px,7.4vw,34px);}
  .fact-row{gap:16px 24px;}
  .fact{flex:1 1 40%;}
}
@media (max-width:399px){
  .hero::before{display:none;}
}
.float-side{display:none;}
@media (max-width:767px){.float-side{display:grid;}}

/* roulang page: article */
:root{
  --bg-base:#0A0A0F;
  --bg-elev-1:#12121A;
  --bg-elev-2:#1A1A24;
  --brand:#C8FF3D;
  --brand-2:#FF3E7F;
  --hint:#FFB020;
  --ok:#3DDC97;
  --ink-1:#F2F4F8;
  --ink-2:#A5ACBA;
  --ink-3:#6C7382;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(200,255,61,.35);
  --glow:rgba(200,255,61,.28);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--ink-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:#DBFF7A;}
p{margin:0 0 1.4em;}
ul,ol{margin:0 0 1.4em;padding-left:1.2em;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em;color:var(--ink-1);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(200,255,61,.28);color:#fff;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container{max-width:1240px;}}
.section{padding-block:96px;}
.mono{font-family:var(--mono);}
.text-ink2{color:var(--ink-2);}
.text-ink3{color:var(--ink-3);}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,10,15,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(200,255,61,.55),rgba(255,62,127,.45),rgba(200,255,61,0));
}
.site-header.is-stuck{box-shadow:0 12px 30px -18px rgba(0,0,0,.9);}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-1);}
.brand:hover{color:var(--ink-1);}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(200,255,61,.08);
  border:1px solid var(--line-neon);
  box-shadow:0 0 18px -6px var(--glow);
}
.brand-text{display:flex;align-items:baseline;gap:6px;}
.brand-name{font-size:20px;font-weight:800;letter-spacing:.04em;}
.brand-sub{
  font-size:12px;color:var(--brand);font-family:var(--mono);
  padding:2px 6px;border-radius:6px;background:rgba(200,255,61,.1);
  border:1px solid rgba(200,255,61,.2);letter-spacing:.08em;
}
.nav-main{display:flex;align-items:center;gap:6px;}
.nav-main a{
  position:relative;
  padding:8px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .18s ease,background .18s ease;
}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;border-radius:2px;
}
.nav-main a:hover{color:var(--ink-1);background:rgba(255,255,255,.04);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.active{color:var(--brand);text-shadow:0 0 14px var(--glow);}
.nav-main a.active::after{transform:scaleX(1);}
.nav-main a.active::before{
  content:"";position:absolute;top:-4px;left:50%;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 20px;border-radius:var(--r-md);
  background:var(--brand);color:#0A0A0F;font-size:15px;font-weight:600;
  border:1px solid var(--brand);cursor:pointer;
  transition:transform .12s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-neon:hover{color:#0A0A0F;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 10px 26px -12px var(--glow);}
.btn-neon:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 20px;border-radius:var(--r-md);
  background:transparent;color:var(--brand);font-size:15px;font-weight:600;
  border:1px solid var(--line-neon);cursor:pointer;
  transition:background .18s ease,transform .12s ease;
}
.btn-ghost:hover{background:rgba(200,255,61,.08);color:var(--brand);transform:translateY(-1px);}
.btn-quiet{
  display:inline-flex;align-items:center;gap:8px;
  background:none;border:none;padding:6px 0;color:var(--brand);
  font-size:15px;font-weight:600;cursor:pointer;
  border-bottom:1px solid transparent;transition:border-color .18s ease;
}
.btn-quiet:hover{border-bottom-color:var(--brand);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--ink-1);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-neon);color:var(--brand);}
.nav-drawer{
  position:fixed;inset:0;z-index:1050;background:#0A0A0F;
  padding:24px 20px 32px;display:flex;flex-direction:column;gap:8px;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.nav-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-head .close-btn{
  width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);color:var(--ink-1);cursor:pointer;
}
.nav-drawer a.drawer-link{
  padding:16px 4px;font-size:18px;font-weight:600;color:var(--ink-1);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.drawer-link.active{color:var(--brand);}
.nav-drawer .btn-neon{margin-top:24px;width:100%;}

/* ============ 面包屑 & 文章头 ============ */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,12,18,.9),rgba(10,10,15,0));
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;font-family:var(--mono);font-size:13px;color:var(--ink-3);
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:rgba(255,255,255,.18);}
.crumb .current{color:var(--ink-2);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero{
  position:relative;overflow:hidden;
  padding:56px 0 48px;
  background-image:linear-gradient(180deg,rgba(10,10,15,.72),rgba(10,10,15,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.12;pointer-events:none;
}
.article-hero .inner{position:relative;max-width:820px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12px;font-weight:600;
  color:var(--brand);background:rgba(200,255,61,.1);
  border:1px solid rgba(200,255,61,.28);letter-spacing:.06em;
}
.badge-cat i{font-size:11px;}
.article-hero h1{
  margin:20px 0 18px;
  font-size:clamp(28px,4.4vw,46px);
  line-height:1.18;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-family:var(--mono);font-size:13px;color:var(--ink-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-3);display:inline-block;}
.article-hero .divider{
  margin-top:28px;height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(255,62,127,.5),transparent);
}

/* ============ 正文 ============ */
.article-main{padding:56px 0 72px;background:var(--bg-base);}
.article-wrap{max-width:820px;margin:0 auto;}
.tip-bar{
  display:flex;gap:12px;align-items:flex-start;
  background:rgba(255,176,32,.08);
  border-left:3px solid var(--hint);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:14px 18px;margin-bottom:36px;
  font-size:14px;color:var(--ink-2);
}
.tip-bar i{color:var(--hint);margin-top:4px;}
.article-body{font-size:17px;line-height:1.95;color:#DDE2EC;word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:22px;margin:44px 0 18px;padding-left:14px;
  border-left:3px solid var(--brand);line-height:1.4;
}
.article-body h3{font-size:19px;margin:34px 0 14px;color:var(--ink-1);}
.article-body h4{font-size:17px;margin:26px 0 12px;color:var(--brand);}
.article-body p{margin:0 0 1.4em;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
.article-body a:hover{color:#E4FF9B;}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:1.4em;}
.article-body li{margin-bottom:.6em;line-height:1.9;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-family:var(--mono);}
.article-body blockquote{
  margin:28px 0;padding:16px 20px;
  border-left:3px solid var(--brand);
  background:#14141C;border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ink-2);font-size:16px;
}
.article-body img{border-radius:var(--r-lg);margin:28px 0;border:1px solid var(--line);}
.article-body figure{margin:28px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-3);margin-top:10px;font-family:var(--mono);}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  margin:28px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-md);
}
.article-body th{
  background:#191922;color:var(--ink-1);text-align:left;
  padding:12px 16px;font-weight:600;white-space:nowrap;
}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);color:var(--ink-2);}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.article-body code{
  font-family:var(--mono);font-size:14px;
  background:rgba(200,255,61,.1);color:var(--brand);
  padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:#101019;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;overflow-x:auto;margin:26px 0;
}
.article-body pre code{background:none;color:var(--ink-1);padding:0;}
.entry-note{
  display:flex;align-items:flex-start;gap:14px;
  margin:32px 0;padding:18px 20px;
  border:1px solid var(--line-neon);border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(200,255,61,.07),rgba(255,62,127,.05));
}
.entry-note .icon{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(200,255,61,.12);color:var(--brand);border:1px solid rgba(200,255,61,.25);
}
.entry-note p{margin:0 0 6px;font-size:15px;color:var(--ink-2);}
.empty-state{
  text-align:center;padding:64px 24px;
  background:var(--bg-elev-1);border:1px solid var(--line);border-radius:var(--r-xl);
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);border:1px solid var(--line-neon);background:rgba(200,255,61,.08);
}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--ink-3);font-size:15px;margin-bottom:22px;}

/* ============ 文末 ============ */
.article-foot{margin-top:56px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;
  color:var(--ink-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:border-color .18s ease,color .18s ease;
}
.tag:hover{border-color:var(--line-neon);color:var(--brand);}
.action-row{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.action-row .btn-ghost{padding:8px 18px;min-height:42px;font-size:14px;}
.back-cta{
  margin-top:48px;padding:40px 32px;border-radius:var(--r-xl);
  background:radial-gradient(circle at 20% 0%,rgba(200,255,61,.12),transparent 60%),var(--bg-elev-1);
  border:1px solid var(--line);text-align:center;
}
.back-cta h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:12px;}
.back-cta p{color:var(--ink-2);font-size:15px;max-width:620px;margin:0 auto 24px;}

/* ============ 相关阅读 ============ */
.related{padding:72px 0 88px;background:#0C0C12;border-top:1px solid var(--line);}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.sec-head h2{font-size:clamp(22px,2.8vw,30px);}
.sec-head h2 span{color:var(--brand);}
.sec-head p{margin:8px 0 0;color:var(--ink-3);font-size:14px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--bg-elev-1);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;color:inherit;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:0 18px 40px -18px var(--glow);color:inherit;}
.card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,rgba(200,255,61,.12),rgba(255,62,127,.12));}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .thumb img{transform:scale(1.04);}
.card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.card .pill{
  align-self:flex-start;font-size:12px;padding:4px 10px;border-radius:999px;
  color:var(--brand);background:rgba(200,255,61,.1);border:1px solid rgba(200,255,61,.22);
  margin-bottom:14px;
}
.card h3{
  font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card p{
  font-size:14px;color:var(--ink-3);line-height:1.7;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card .meta{
  margin-top:auto;font-family:var(--mono);font-size:12px;color:var(--ink-3);
  display:flex;align-items:center;gap:8px;
}
.card .meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);}

/* ============ 浮动 CTA ============ */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1040;}
.float-cta .panel{
  position:absolute;right:0;bottom:calc(100% + 12px);width:238px;
  background:var(--bg-elev-2);border:1px solid var(--line-neon);border-radius:var(--r-lg);
  padding:10px;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  box-shadow:0 24px 50px -24px rgba(0,0,0,.9);
}
.float-cta:hover .panel,.float-cta:focus-within .panel{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .panel a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14px;color:var(--ink-2);
}
.float-cta .panel a:hover{background:rgba(200,255,61,.08);color:var(--brand);}
.float-cta .panel a i{color:var(--brand);font-size:13px;}
.float-cta .main{
  display:inline-flex;align-items:center;gap:10px;
  min-height:48px;padding:12px 22px;border-radius:999px;
  background:var(--brand);color:#0A0A0F;font-weight:600;font-size:15px;
  box-shadow:0 16px 36px -16px var(--glow);
  transition:transform .14s ease,filter .18s ease;
}
.float-cta .main:hover{color:#0A0A0F;filter:brightness(1.08);transform:translateY(-1px);}
.float-cta .pulse{
  width:8px;height:8px;border-radius:50%;background:#0A0A0F;
  animation:pulseDot 2.6s ease-in-out infinite;
}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.7);}}

/* ============ Toast ============ */
.toast-neon{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,14px);
  background:var(--bg-elev-2);border:1px solid var(--line-neon);color:var(--ink-1);
  padding:12px 22px;border-radius:999px;font-size:14px;z-index:1080;
  opacity:0;visibility:hidden;transition:opacity .22s ease,transform .22s ease,visibility .22s;
  box-shadow:0 18px 40px -20px var(--glow);
}
.toast-neon.show{opacity:1;visibility:visible;transform:translate(-50%,0);}
.toast-neon i{color:var(--brand);margin-right:8px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:#08080C;padding:72px 0 28px;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),transparent);
  opacity:.7;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;
  align-items:center;justify-content:center;background:rgba(200,255,61,.08);
  border:1px solid var(--line-neon);
}
.footer-brand .brand-name{font-size:19px;font-weight:800;letter-spacing:.04em;}
.footer-brand .brand-sub{
  font-size:12px;color:var(--brand);font-family:var(--mono);margin-left:6px;letter-spacing:.08em;
}
.footer-about{font-size:14px;line-height:1.8;color:var(--ink-3);max-width:340px;}
.footer-title{
  font-size:15px;font-weight:600;margin-bottom:18px;position:relative;padding-bottom:12px;
}
.footer-title::after{
  content:"";position:absolute;left:0;bottom:0;width:22px;height:2px;background:var(--brand);border-radius:2px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a,.footer-links span{font-size:14px;color:var(--ink-3);transition:color .18s ease,transform .18s ease;}
.footer-links a{display:inline-block;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-family:var(--mono);font-size:13px;color:var(--ink-3);
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
  .float-cta .pulse{animation:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  :root{--header-h:64px;}
  .nav-main{display:none;}
  .header-actions .btn-neon{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding-block:72px;}
  .article-hero{padding:44px 0 38px;}
  .article-body{font-size:16.5px;}
  .related{padding:56px 0 72px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding-block:56px;}
  .container{padding:0 16px;}
  .brand-sub{display:none;}
  .article-hero h1{font-size:clamp(22px,6.4vw,30px);}
  .article-meta{font-size:12px;gap:9px;}
  .article-main{padding:40px 0 56px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:20px;margin-top:34px;}
  .article-body h3{font-size:17.5px;}
  .card-grid{grid-template-columns:1fr;}
  .crumb{padding:12px 0;font-size:12px;}
  .crumb .current{max-width:26ch;}
  .back-cta{padding:32px 20px;}
  .float-cta{left:12px;right:12px;bottom:12px;}
  .float-cta .main{width:100%;justify-content:center;}
  .float-cta .panel{left:0;right:0;width:auto;bottom:calc(100% + 10px);}
  .float-cta .panel a{justify-content:center;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:399px){
  .article-hero::before{display:none;}
}

/* roulang page: category1 */
:root{
  --bg-base:#0A0A0F;
  --bg-elev-1:#12121A;
  --bg-elev-2:#1A1A24;
  --brand:#C8FF3D;
  --brand-2:#FF3E7F;
  --hint:#FFB020;
  --ok:#3DDC97;
  --ink-1:#F2F4F8;
  --ink-2:#A5ACBA;
  --ink-3:#6C7382;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(200,255,61,.35);
  --glow:rgba(200,255,61,.28);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--ink-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(700px 420px at 12% -6%, rgba(200,255,61,.07), transparent 70%),
    radial-gradient(620px 400px at 92% 4%, rgba(255,62,127,.06), transparent 72%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease}
p{margin:0 0 1.4em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em}
ul,ol{margin:0 0 1.4em;padding-left:1.2em}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,textarea: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:1400px){.container{max-width:1240px}}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(10,10,15,.78);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,backdrop-filter .24s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),transparent);
  opacity:.7;
}
.site-header.is-stuck{
  background:rgba(10,10,15,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:16px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;
  border-radius:11px;
  display:grid;place-items:center;
  border:1px solid var(--line-neon);
  background:linear-gradient(160deg,rgba(200,255,61,.14),rgba(255,62,127,.07));
  box-shadow:0 0 18px -8px var(--glow);
}
.brand-text{display:flex;align-items:baseline;gap:6px;white-space:nowrap}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.08em}
.brand-sub{font-size:11px;font-family:var(--mono);letter-spacing:.16em;color:var(--brand)}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:26px}
.nav-main a{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-main a:hover{color:var(--ink-1)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.active{
  color:var(--ink-1);
  text-shadow:0 0 14px var(--glow);
}
.nav-main a.active::after{transform:scaleX(1)}
.nav-main a.active::before{
  content:"";
  position:absolute;
  top:1px;left:50%;
  transform:translateX(-50%);
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px var(--brand);
}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.btn-neon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--brand);
  color:#0A0A0F;
  font-weight:600;
  font-size:15px;
  line-height:1;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  cursor:pointer;
  transition:filter .16s ease-out,transform .16s ease-out,box-shadow .16s ease-out,color .16s ease-out;
}
.btn-neon:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 12px 30px -14px var(--glow);
  color:#0A0A0F;
}
.btn-neon:active{transform:translateY(0) scale(.99)}
.btn-neon.btn-sm{padding:10px 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:transparent;
  color:var(--brand);
  font-weight:600;
  font-size:15px;
  line-height:1;
  padding:13px 22px;
  border:1px solid var(--line-neon);
  border-radius:var(--r-md);
  cursor:pointer;
  transition:background .16s ease-out,transform .16s ease-out,color .16s ease-out;
}
.btn-ghost:hover{background:rgba(200,255,61,.08);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:border-color .18s ease,color .18s ease;
}
.btn-text:hover{border-bottom-color:var(--brand);color:var(--brand)}

.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:var(--bg-elev-1);
  cursor:pointer;
  padding:0;
  position:relative;
}
.nav-toggle span{
  display:block;
  position:absolute;
  left:50%;
  width:18px;height:2px;
  margin-left:-9px;
  background:var(--ink-1);
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease,background .22s ease;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);background:var(--brand)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);background:var(--brand)}

.nav-drawer{
  display:none;
  position:fixed;
  inset:0;
  z-index:1040;
  background:rgba(10,10,15,.98);
  padding:96px 24px 32px;
  flex-direction:column;
  gap:6px;
}
.nav-drawer.open{display:flex}
.nav-drawer a.drawer-link{
  font-size:18px;
  font-weight:600;
  color:var(--ink-1);
  padding:16px 4px;
  border-bottom:1px solid var(--line);
}
.nav-drawer a.drawer-link.active{color:var(--brand);text-shadow:0 0 14px var(--glow)}
.nav-drawer a.drawer-link:hover{color:var(--brand)}
.drawer-cta{margin-top:24px;width:100%;padding:16px}

/* ============ 通用区块 ============ */
.section{padding-block:96px;position:relative;z-index:1}
.section-alt{background:linear-gradient(180deg,rgba(18,18,26,.55),rgba(10,10,15,0))}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,3.2vw,38px);
  line-height:1.25;
  margin-bottom:14px;
}
.section-head h2 .hl{color:var(--brand)}
.section-head p{color:var(--ink-2);font-size:16px;margin:0}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand);
  background:rgba(200,255,61,.08);
  border:1px solid var(--line-neon);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
}
.section-tag::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px var(--brand);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.45;transform:scale(.82)}
}

/* ============ 页面头 ============ */
.page-head{
  position:relative;
  overflow:hidden;
  padding:56px 0 64px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(90deg,rgba(10,10,15,.97) 0%,rgba(10,10,15,.88) 46%,rgba(10,10,15,.6) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.12;
  background-image:
    linear-gradient(rgba(200,255,61,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(200,255,61,.5) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-head .container{position:relative;z-index:2}
.crumb{
  display:flex;
  align-items:center;
  gap:9px;
  flex-wrap:wrap;
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:26px;
}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--ink-3);opacity:.6}
.crumb .current{color:var(--brand)}
.page-head h1{
  font-size:clamp(30px,5.2vw,54px);
  line-height:1.16;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.page-head h1 .hl{
  color:var(--brand);
  text-shadow:0 0 30px rgba(200,255,61,.22);
}
.page-head .lead{
  max-width:640px;
  color:var(--ink-2);
  font-size:17px;
  line-height:1.9;
  margin:0 0 30px;
}
.head-actions{display:flex;flex-wrap:wrap;gap:14px}
.head-badge{
  position:absolute;
  right:20px;
  top:96px;
  width:210px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:rgba(18,18,26,.72);
  padding:18px 18px 16px;
  display:none;
}
.head-badge .badge-k{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--brand-2);
  display:block;
  margin-bottom:10px;
}
.head-badge .badge-v{
  font-family:var(--mono);
  font-size:15px;
  color:var(--ink-1);
  display:block;
  padding:7px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
}
.head-badge .badge-v:last-child{border-bottom:0}
@media (min-width:1200px){.head-badge{display:block}}

/* ============ 介绍区 ============ */
.intro-grid{
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,4fr);
  gap:52px;
  align-items:start;
}
.intro-text h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:20px}
.intro-text p{color:var(--ink-2);font-size:16px;line-height:1.9}
.intro-highlight{
  margin-top:28px;
  border-left:3px solid var(--brand);
  background:rgba(200,255,61,.05);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  padding:16px 20px;
  color:var(--ink-1);
  font-size:15px;
  line-height:1.85;
}
.figure-frame{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-neon);
  box-shadow:0 24px 60px -34px var(--glow);
}
.figure-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.figure-frame figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 18px;
  font-size:13px;
  color:var(--ink-2);
  background:linear-gradient(180deg,transparent,rgba(10,10,15,.92));
}
.figure-tag{
  position:absolute;
  top:14px;left:14px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.14em;
  color:#0A0A0F;
  background:var(--brand);
  border-radius:999px;
  padding:6px 12px;
}

/* ============ 流程时间轴 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:20px;
  position:relative;
  margin-top:8px;
}
.steps::before{
  content:"";
  position:absolute;
  top:17px;left:6%;right:6%;
  height:1px;
  background:linear-gradient(90deg,rgba(200,255,61,.05),rgba(200,255,61,.5),rgba(255,62,127,.5),rgba(200,255,61,.05));
}
.step{position:relative;padding-top:0}
.step-num{
  position:relative;
  z-index:2;
  width:36px;height:36px;
  border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--mono);
  font-size:14px;
  font-weight:700;
  color:var(--brand);
  background:var(--bg-base);
  border:1px solid var(--line-neon);
  box-shadow:0 0 0 6px rgba(10,10,15,.9);
  margin-bottom:18px;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
.step-card{
  background:var(--bg-elev-1);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px 20px;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  height:100%;
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-neon);
  box-shadow:0 18px 40px -18px var(--glow);
}
.step-card .step-num{margin-bottom:16px}

/* ============ 条目卡片 ============ */
.node-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.node-card{
  position:relative;
  display:flex;
  flex-direction:column;
  background:var(--bg-elev-1);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 24px 24px;
  overflow:hidden;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out,background .22s ease-out;
}
.node-card::before{
  content:"";
  position:absolute;
  top:0;left:22px;right:22px;
  height:1px;
  background:linear-gradient(90deg,var(--brand),rgba(200,255,61,0));
}
.node-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-neon);
  background:var(--bg-elev-2);
  box-shadow:0 18px 40px -18px var(--glow);
}
.node-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.node-icon{
  width:42px;height:42px;
  flex-shrink:0;
  border-radius:11px;
  display:grid;place-items:center;
  background:rgba(200,255,61,.09);
  border:1px solid var(--line-neon);
  color:var(--brand);
  font-size:17px;
}
.node-index{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.12em;
}
.node-card h3{font-size:18px;margin-bottom:10px;line-height:1.45}
.node-card p{
  font-size:14.5px;
  color:var(--ink-2);
  line-height:1.85;
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.node-card .btn-text{margin-top:auto}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq .accordion-item:first-child{border-top:1px solid var(--line)}
.faq .accordion-button{
  position:relative;
  background:transparent;
  color:var(--ink-1);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:22px 48px 22px 18px;
  box-shadow:none;
  border-radius:0;
}
.faq .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:22px;bottom:22px;
  width:3px;
  border-radius:3px;
  background:transparent;
  transition:background .24s ease;
}
.faq .accordion-button::after{
  background-image:none !important;
  content:"+";
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  width:24px;height:24px;
  display:grid;place-items:center;
  transform:none;
  transition:transform .24s ease,color .24s ease;
}
.faq .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed)::before{background:var(--brand)}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand-2)}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:-2px}
.faq .accordion-body{
  padding:0 48px 22px 18px;
  color:var(--ink-2);
  font-size:15px;
  line-height:1.9;
}

/* ============ 底部互链 / CTA ============ */
.cta-panel{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  background:linear-gradient(160deg,var(--bg-elev-1),rgba(10,10,15,.9));
  padding:52px 44px 44px;
}
.cta-glow{
  position:absolute;
  width:520px;height:520px;
  right:-140px;top:-220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,61,.12),transparent 68%);
  pointer-events:none;
}
.cta-body{position:relative;z-index:2;max-width:640px}
.cta-body h2{font-size:clamp(22px,2.8vw,34px);margin-bottom:14px}
.cta-body p{color:var(--ink-2);font-size:16px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-links{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:42px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.rel-link{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:16px 18px;
  background:rgba(26,26,36,.5);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.rel-link:hover{border-color:var(--line-neon);transform:translateY(-3px);background:rgba(26,26,36,.9)}
.rel-k{
  display:block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--brand-2);
  margin-bottom:8px;
}
.rel-t{display:block;font-size:16px;font-weight:600;margin-bottom:6px}
.rel-d{display:block;font-size:13px;color:var(--ink-3);line-height:1.7}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1020;
  display:flex;
  align-items:center;
  gap:10px;
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.show{opacity:1;transform:none;pointer-events:auto}
.float-cta a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  padding:13px 20px;
  white-space:nowrap;
}
.fc-main{background:var(--brand);color:#0A0A0F;box-shadow:0 14px 34px -16px var(--glow)}
.fc-main:hover{filter:brightness(1.08);color:#0A0A0F}
.fc-alt{
  background:rgba(18,18,26,.92);
  color:var(--brand);
  border:1px solid var(--line-neon);
  opacity:0;
  transform:translateX(12px);
  pointer-events:none;
  transition:opacity .22s ease,transform .22s ease;
}
.float-cta:hover .fc-alt{opacity:1;transform:none;pointer-events:auto}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:20px;
  padding-top:72px;
  background:linear-gradient(180deg,rgba(18,18,26,.7),rgba(10,10,15,.98));
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),transparent);
  opacity:.7;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-about{color:var(--ink-2);font-size:14.5px;line-height:1.9;max-width:340px;margin:0}
.footer-title{
  position:relative;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  padding-bottom:12px;
}
.footer-title::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:12px;height:2px;
  background:var(--brand);
  border-radius:2px;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{
  font-size:14px;
  color:var(--ink-2);
  transition:color .18s ease,transform .18s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;
  padding:22px 0 26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-3);
  font-family:var(--mono);
}

/* ============ 入场动效 ============ */
.js .reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s ease-out,transform .42s ease-out;
}
.js .reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .head-badge{display:none}
}
@media (max-width:991.98px){
  .nav-main,.header-cta{display:none}
  .nav-toggle{display:block}
  .header-inner{height:64px}
  .section{padding-block:72px}
  .page-head{padding:40px 0 52px}
  .intro-grid{grid-template-columns:minmax(0,1fr);gap:34px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .steps::before{display:none}
  .node-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .cta-links{grid-template-columns:minmax(0,1fr);gap:14px}
  .cta-panel{padding:40px 28px 32px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .section{padding-block:56px}
  .page-head h1{font-size:clamp(26px,7vw,34px)}
  .page-head .lead{font-size:15.5px}
  .head-actions{gap:12px}
  .btn-neon,.btn-ghost{width:100%;padding:14px 20px}
  .head-actions .btn-neon,.head-actions .btn-ghost{width:auto;flex:1 1 180px}
  .float-cta{
    left:16px;right:16px;bottom:16px;
    gap:8px;
  }
  .fc-alt{display:none}
  .fc-main{width:100%;justify-content:center;padding:15px 20px}
  .node-grid{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr)}
  .faq .accordion-button{font-size:16px;padding:20px 44px 20px 16px}
  .faq .accordion-body{padding:0 24px 20px 16px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:399.98px){
  .page-head::before{display:none}
  .brand-sub{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-base:#0A0A0F;
  --bg-elev-1:#12121A;
  --bg-elev-2:#1A1A24;
  --brand:#C8FF3D;
  --brand-2:#FF3E7F;
  --hint:#FFB020;
  --ok:#3DDC97;
  --ink-1:#F2F4F8;
  --ink-2:#A5ACBA;
  --ink-3:#6C7382;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(200,255,61,.35);
  --glow:rgba(200,255,61,.28);
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:24px;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-base);
  color:var(--ink-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  padding-bottom:0;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink-1);letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(200,255,61,.28);color:#0A0A0F;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:20px;}
@media (min-width:1400px){.container{max-width:1240px;}}

/* ============ 顶栏 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(10,10,15,.92);
  border-bottom:1px solid var(--line);
  transition:background .28s ease,box-shadow .28s ease,backdrop-filter .28s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2) 70%,transparent);
  opacity:.55;
}
.site-header.is-stuck{
  background:rgba(10,10,15,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 18px 40px -24px rgba(0,0,0,.9);
}
.header-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:var(--r-sm);
  background:var(--bg-elev-2);
  border:1px solid var(--line-neon);
  box-shadow:0 0 18px -6px var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.06em;font-family:var(--mono);color:var(--ink-1);}
.brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.18em;}
.nav-main{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-main a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--r-sm);
  white-space:nowrap;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:8px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease-out;
}
.nav-main a:hover{color:var(--ink-1);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.active{color:#fff;text-shadow:0 0 14px var(--glow);}
.nav-main a.active::after{transform:scaleX(1);}
.nav-main a.active::before{
  content:"";
  position:absolute;
  top:10px;left:50%;
  width:5px;height:5px;
  margin-left:-2.5px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px 2px var(--glow);
}
.header-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:var(--r-md);
  background:var(--brand);
  color:#0A0A0F;
  font-size:15px;
  font-weight:600;
  transition:transform .16s ease-out,filter .16s ease-out,box-shadow .16s ease-out;
}
.header-cta:hover{
  color:#0A0A0F;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(200,255,61,.5),0 14px 30px -14px var(--glow);
}
.header-cta:active{transform:translateY(0) scale(.99);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--bg-elev-1);
  color:var(--ink-1);
  align-items:center;
  justify-content:center;
}

/* ============ 页面头 ============ */
main{padding-top:var(--header-h);}
.page-head{padding:56px 0 0;}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:24px;
  flex-wrap:wrap;
}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .cur{color:var(--ink-2);}
.page-head-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 220px;
  gap:32px;
  align-items:center;
}
.badge-neon{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:999px;
  border:1px solid var(--line-neon);
  background:rgba(200,255,61,.08);
  color:var(--brand);
  font-size:13px;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.badge-neon::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px 2px var(--glow);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.45;transform:scale(.82);}
}
h1{
  font-size:clamp(30px,5.2vw,58px);
  line-height:1.16;
  margin-bottom:18px;
}
h1 .h1-accent{
  color:var(--brand);
  text-shadow:0 0 24px rgba(200,255,61,.32);
}
.lead{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:760px;
}
.page-head-deco{
  position:relative;
  height:132px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:22px 22px;
  overflow:hidden;
}
.page-head-deco::before{
  content:"";
  position:absolute;
  inset:auto -20% -40% -20%;
  height:120px;
  background:radial-gradient(60% 100% at 50% 100%,rgba(200,255,61,.22),transparent 70%);
}
.page-head-deco::after{
  content:"MK / NAV";
  position:absolute;
  right:16px;bottom:12px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.22em;
  color:var(--ink-3);
}
.wide-visual{
  position:relative;
  margin-top:40px;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  min-height:240px;
}
.wide-visual img{
  width:100%;
  height:300px;
  object-fit:cover;
  opacity:.55;
}
.wide-visual-mask{
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(10,10,15,.94) 0%,rgba(10,10,15,.7) 45%,rgba(10,10,15,.35) 100%),
    linear-gradient(0deg,rgba(10,10,15,.92),rgba(10,10,15,.2));
}
.wide-visual-caption{
  position:absolute;
  left:28px;bottom:24px;right:28px;
  max-width:520px;
}
.wide-visual-caption .mono{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--brand);
}
.wide-visual-caption p{
  margin-top:8px;
  font-size:15px;
  color:var(--ink-2);
}

/* ============ 锚点目录条 ============ */
.anchor-bar{
  position:sticky;
  top:calc(var(--header-h) + 12px);
  z-index:50;
  margin-top:32px;
  padding:10px 0;
  background:rgba(10,10,15,.9);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-label{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink-3);
  padding-right:6px;
}
.anchor-pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-elev-1);
  color:var(--ink-2);
  font-size:14px;
  white-space:nowrap;
  transition:all .2s ease-out;
}
.anchor-pill:hover{color:var(--ink-1);border-color:var(--line-neon);}
.anchor-pill.is-active{
  background:rgba(200,255,61,.12);
  border-color:var(--line-neon);
  color:var(--brand);
}

/* ============ 通用板块 ============ */
.block{padding:64px 0;}
.block + .block{border-top:1px solid var(--line);}
.block-head{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,400px);
  gap:24px;
  align-items:end;
  margin-bottom:32px;
}
.eyebrow{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.22em;
  color:var(--brand-2);
  margin-bottom:10px;
}
.block-head h2{
  font-size:clamp(24px,3.2vw,38px);
  line-height:1.25;
}
.block-note{
  font-size:15px;
  color:var(--ink-2);
  line-height:1.9;
}

/* ============ 条目卡（2 列横向） ============ */
.nav-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.nav-card{
  display:flex;
  gap:16px;
  padding:22px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-elev-1);
  position:relative;
  overflow:hidden;
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.nav-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(200,255,61,.7),rgba(255,62,127,.35) 55%,transparent);
  opacity:.75;
}
.nav-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-neon);
  box-shadow:0 18px 40px -18px var(--glow);
}
.nav-card-icon{
  flex:0 0 48px;
  width:48px;height:48px;
  display:grid;place-items:center;
  border-radius:var(--r-md);
  background:var(--bg-elev-2);
  border:1px solid var(--line-neon);
  color:var(--brand);
  font-size:18px;
}
.nav-card-body{min-width:0;}
.nav-card-body h3{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:8px;
  display:flex;
  align-items:baseline;
  gap:10px;
}
.nav-card-body h3 .idx{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.08em;
}
.nav-card-body p{
  font-size:14px;
  line-height:1.9;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:12px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:4px;
  text-decoration-color:transparent;
  transition:text-decoration-color .2s ease,color .2s ease;
}
.link-more:hover{text-decoration-color:var(--brand);}
.link-more i{font-size:12px;transition:transform .2s ease;}
.link-more:hover i{transform:translateX(3px);}

/* ============ 进入前准备 ============ */
.prepare-grid{
  display:grid;
  grid-template-columns:minmax(0,420px) minmax(0,1fr);
  gap:32px;
  align-items:center;
}
.prepare-figure{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-neon);
  position:relative;
}
.prepare-figure img{width:100%;height:300px;object-fit:cover;}
.prepare-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 16px;
  font-size:13px;
  color:var(--ink-2);
  background:linear-gradient(0deg,rgba(10,10,15,.92),transparent);
  font-family:var(--mono);
}
.prepare-list{display:grid;gap:16px;}
.prepare-item{
  display:flex;
  gap:14px;
  padding:18px 20px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-elev-1);
  transition:border-color .24s ease-out,background .24s ease-out;
}
.prepare-item:hover{border-color:var(--line-neon);background:var(--bg-elev-2);}
.prepare-item .n{
  flex:0 0 28px;
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  padding-top:3px;
}
.prepare-item h3{font-size:16px;font-weight:600;margin-bottom:4px;}
.prepare-item p{font-size:14px;color:var(--ink-2);line-height:1.85;}

/* ============ FAQ ============ */
.mk-faq{margin-top:8px;}
.mk-faq .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.mk-faq .accordion-item:first-child{border-top:1px solid var(--line);}
.mk-faq .accordion-header{margin:0;}
.mk-faq .accordion-button{
  background:transparent;
  color:var(--ink-1);
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  padding:22px 44px 22px 0;
  border-radius:0;
  box-shadow:none;
  gap:12px;
}
.mk-faq .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:inset 3px 0 0 0 var(--brand);
  padding-left:16px;
}
.mk-faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:2px;}
.mk-faq .accordion-button .faq-idx{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-3);
  margin-right:10px;
}
.mk-faq .accordion-button::after{
  content:"+";
  background-image:none;
  width:24px;height:24px;
  display:grid;place-items:center;
  font-family:var(--mono);
  font-size:20px;
  line-height:1;
  color:var(--brand);
  transition:transform .3s ease;
}
.mk-faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.mk-faq .accordion-body{
  padding:0 44px 22px 0;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-2);
}
.mk-faq .accordion-button:not(.collapsed) + .accordion-collapse .accordion-body{padding-left:16px;}

/* ============ 互链区 ============ */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  margin-top:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:20px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-elev-1);
  transition:transform .24s ease-out,border-color .24s ease-out;
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-neon);}
.related-card .tag{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand-2);
}
.related-card h3{font-size:17px;font-weight:600;}
.related-card p{font-size:14px;color:var(--ink-2);line-height:1.85;}
.related-card .go{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}

/* ============ CTA ============ */
.cta-block{
  position:relative;
  padding:56px 0;
  border-top:1px solid var(--line);
  background:radial-gradient(70% 120% at 12% 50%,rgba(200,255,61,.1),transparent 65%);
  overflow:hidden;
}
.cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:28px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-inner p{font-size:15px;color:var(--ink-2);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-md);
  background:var(--brand);
  color:#0A0A0F;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .16s ease-out,filter .16s ease-out,box-shadow .16s ease-out;
}
.btn-brand:hover{
  color:#0A0A0F;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(200,255,61,.5),0 16px 34px -16px var(--glow);
}
.btn-brand:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  border-radius:var(--r-md);
  background:transparent;
  border:1px solid var(--line-neon);
  color:var(--brand);
  font-size:15px;
  font-weight:600;
  transition:background .2s ease-out,transform .16s ease-out;
}
.btn-ghost:hover{background:rgba(200,255,61,.08);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0) scale(.99);}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  position:relative;
  padding:64px 0 0;
  background:var(--bg-base);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2) 60%,transparent);
  opacity:.6;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.9;color:var(--ink-2);max-width:360px;}
.footer-title{
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  position:relative;
  padding-bottom:10px;
}
.footer-title::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:12px;height:2px;
  background:var(--brand);
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:var(--ink-2);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;
  padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-3);
  font-family:var(--mono);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:flex;
  align-items:center;
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .32s ease-out,transform .32s ease-out;
}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto;}
.float-panel{
  display:flex;
  gap:8px;
  margin-right:10px;
  opacity:0;
  transform:translateX(10px);
  pointer-events:none;
  transition:opacity .24s ease-out,transform .24s ease-out;
}
.float-cta:hover .float-panel,
.float-cta:focus-within .float-panel{opacity:1;transform:none;pointer-events:auto;}
.float-panel a{
  display:inline-flex;
  align-items:center;
  padding:10px 16px;
  border-radius:999px;
  background:var(--bg-elev-2);
  border:1px solid var(--line-neon);
  font-size:14px;
  color:var(--ink-1);
  white-space:nowrap;
}
.float-panel a:hover{color:var(--brand);}
.float-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-width:150px;
  min-height:50px;
  padding:0 22px;
  border-radius:999px;
  background:var(--brand);
  color:#0A0A0F;
  font-size:15px;
  font-weight:600;
  box-shadow:0 16px 34px -16px var(--glow);
  transition:filter .2s ease,transform .2s ease;
}
.float-main:hover{color:#0A0A0F;filter:brightness(1.08);transform:translateY(-1px);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .page-head-grid{grid-template-columns:minmax(0,1fr);}
  .page-head-deco{display:none;}
  .prepare-grid{grid-template-columns:minmax(0,1fr);}
  .prepare-figure img{height:260px;}
}
@media (max-width:991.98px){
  :root{--header-h:60px;}
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .nav-main{
    position:fixed;
    top:var(--header-h);
    left:0;right:0;bottom:0;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:20px;
    background:rgba(10,10,15,.98);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    transform:translateX(100%);
    transition:transform .28s ease-out;
    overflow-y:auto;
  }
  body.nav-open .nav-main{transform:translateX(0);}
  .nav-main a{
    min-height:56px;
    padding:0 8px;
    font-size:18px;
    border-bottom:1px solid var(--line);
    border-radius:0;
  }
  .nav-main a::after{left:8px;right:auto;width:0;bottom:0;}
  .nav-main a.active::before{display:none;}
  .nav-main a.active{box-shadow:inset 3px 0 0 0 var(--brand);padding-left:16px;}
  .block-head{grid-template-columns:minmax(0,1fr);}
  .block{padding:56px 0;}
  .nav-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:minmax(0,1fr);}
  .anchor-bar{top:calc(var(--header-h) + 8px);}
  .wide-visual img{height:240px;}
}
@media (max-width:767.98px){
  body{font-size:15px;padding-bottom:72px;}
  .page-head{padding-top:36px;}
  .nav-grid{grid-template-columns:minmax(0,1fr);}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .nav-card{padding:18px;}
  .nav-card-body h3{font-size:17px;}
  .mk-faq .accordion-button{font-size:16px;padding:18px 40px 18px 0;}
  .mk-faq .accordion-button:not(.collapsed){padding-left:14px;}
  .mk-faq .accordion-body{padding:0 24px 20px 0;font-size:14px;}
  .footer-about{max-width:none;}
  .float-cta{
    left:0;right:0;bottom:0;
    display:block;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px));
    background:rgba(10,10,15,.94);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
  }
  .float-panel{display:none;}
  .float-main{width:100%;min-height:48px;border-radius:var(--r-md);}
  .wide-visual-caption{left:18px;right:18px;bottom:16px;}
  .wide-visual img{height:220px;}
}
@media (max-width:399.98px){
  .page-head-deco{display:none;}
  h1{font-size:28px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}