/* roulang page: index */
:root{
  --bg-0:#080C10;--bg-1:#0E141A;--bg-2:#141C24;
  --brand:#2BE0C6;--brand-2:#7B5CFF;--hot:#FF4D6D;
  --line:rgba(43,224,198,.16);--line-strong:rgba(43,224,198,.42);
  --text:#E9F2F3;--text-2:#93A6AE;--text-3:#5C6E77;
  --radius-card:16px;--radius-img:14px;--radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 26px -8px rgba(43,224,198,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(43,224,198,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(43,224,198,.045) 1px,transparent 1px);
  background-size:48px 48px;
}
body::after{
  content:"";position:fixed;top:-45%;left:-25%;width:150%;height:190%;z-index:0;pointer-events:none;
  background:linear-gradient(12deg,transparent 38%,rgba(43,224,198,.08) 50%,rgba(123,92,255,.08) 60%,transparent 72%);
  animation:sheen 20s linear infinite;
}
@keyframes sheen{0%{transform:translate3d(0,0,0)}100%{transform:translate3d(-6%,4%,0)}}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.18;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;position:relative;z-index:1}
.num{font-family:'Barlow','Inter',system-ui,sans-serif;font-variant-numeric:tabular-nums}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04120F;padding:10px 18px;z-index:99}
.skip-link:focus{left:12px;top:12px;border-radius:8px}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,18,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(43,224,198,0) 0%,var(--brand) 32%,var(--brand-2) 68%,rgba(123,92,255,0) 100%);
  opacity:.75;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.logo:hover{color:var(--text)}
.logo-mark{color:var(--brand);filter:drop-shadow(0 0 6px rgba(43,224,198,.55));flex:0 0 auto}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;
  padding:0 14px;font-size:15px;color:var(--text-2);font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:1px;
  background:rgba(233,242,243,.5);transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  transform:scaleX(1);height:2px;bottom:14px;background:var(--brand);
  box-shadow:0 0 12px rgba(43,224,198,.85);
}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;align-items:center;justify-content:center;color:var(--text-2)}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand)}
.mobile-drawer{
  display:none;position:fixed;top:60px;left:0;right:0;bottom:0;z-index:59;
  background:rgba(8,12,16,.985);padding:18px 20px 32px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 4px;font-size:17px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--brand)}
.drawer-cta{margin-top:22px}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .24s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04120F;box-shadow:0 10px 26px -14px rgba(43,224,198,.9)}
.btn-primary:hover{background:#48ecd4;color:#04120F;box-shadow:0 0 26px -6px rgba(43,224,198,.75)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{background:rgba(43,224,198,.08);color:var(--brand);border-color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.link-underline{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;
  border-bottom:1px solid rgba(43,224,198,.35);padding-bottom:2px;transition:border-color .24s var(--ease)
}
.link-underline:hover{border-color:var(--brand)}

/* ============ Badges & tags ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;border:1px solid var(--line);color:var(--brand);
  background:rgba(43,224,198,.06);
}
.badge-purple{color:#B7A6FF;border-color:rgba(123,92,255,.34);background:rgba(123,92,255,.08)}
.badge-hot{color:#FFD3DA;border-color:rgba(255,77,109,.4);background:rgba(255,77,109,.12)}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--hot);box-shadow:0 0 10px rgba(255,77,109,.9);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;padding:8px 16px;border-radius:999px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);transition:all .24s var(--ease)
}
.tag:hover{color:var(--brand);border-color:var(--line-strong)}
.tag.is-active{color:var(--brand);border-color:var(--brand);background:rgba(43,224,198,.08)}

/* ============ Section basics ============ */
main{position:relative;z-index:1}
.section{padding:104px 0}
.section-alt{background:var(--bg-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:32px;margin-bottom:48px}
.eyebrow{
  display:block;font-family:'Barlow','Inter',system-ui,sans-serif;font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--brand);margin-bottom:14px;
}
.section-title{font-size:36px;font-weight:700}
.section-desc{color:var(--text-2);font-size:15px;max-width:560px;margin-top:12px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ============ Hero ============ */
.hero{position:relative;padding:88px 0 96px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;opacity:.34;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(255deg,transparent 18%,rgba(8,12,16,.86) 62%,var(--bg-0) 100%);
}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;min-height:640px;position:relative;z-index:1}
.hero-title{font-size:clamp(34px,4.4vw,58px);font-weight:800;line-height:1.12;letter-spacing:-.02em}
.hero-title .accent{
  background:linear-gradient(96deg,var(--brand) 0%,#8FF3E5 42%,var(--brand-2) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:22px;color:var(--text-2);font-size:17px;max-width:540px;line-height:1.9}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-trust{margin-top:20px;font-size:12px;letter-spacing:.06em;color:var(--text-3)}
.hero-visual{position:relative}
.hero-visual img{border:1px solid var(--line);box-shadow:var(--shadow-card)}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-img);pointer-events:none;
  background:linear-gradient(200deg,rgba(8,12,16,0) 34%,rgba(8,12,16,.78) 100%);
}
.float-card{
  position:absolute;left:-24px;bottom:34px;z-index:3;
  background:rgba(14,20,26,.95);border:1px solid var(--line-strong);border-radius:14px;
  padding:18px 22px;min-width:212px;box-shadow:0 0 34px -12px rgba(43,224,198,.6);
}
.float-card .fc-label{font-size:12px;color:var(--text-3);letter-spacing:.1em}
.float-card .fc-value{font-size:30px;font-weight:700;color:var(--brand);line-height:1.2}
.float-card .fc-note{font-size:12px;color:var(--text-2)}
.hero-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:44px;position:relative;z-index:1}

/* ============ Marquee promise bar ============ */
.promise{padding:44px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1)}
.promise-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.promise-line{font-size:clamp(19px,2.2vw,26px);font-weight:700;letter-spacing:-.01em;max-width:720px}
.promise-line span{color:var(--brand)}

/* ============ Story / system ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.prose p{color:var(--text-2);margin-bottom:18px}
.prose p:last-child{margin-bottom:0}
.media-frame{border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;margin-top:28px}
.media-frame img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-25px;top:6px;width:11px;height:11px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);box-shadow:0 0 12px rgba(43,224,198,.7);
}
.tl-step{font-family:'Barlow','Inter',system-ui,sans-serif;font-size:12px;letter-spacing:.16em;color:var(--text-3)}
.tl-title{font-size:19px;font-weight:600;margin:4px 0 6px}
.tl-text{color:var(--text-2);font-size:15px}

/* ============ Feature asymmetric grid ============ */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--glow)}
.card-cover{position:relative;overflow:hidden}
.card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .5s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(8,12,16,0) 40%,rgba(8,12,16,.7) 100%)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:20px;font-weight:600;line-height:1.45}
.card-title-lg{font-size:27px}
.card-text{color:var(--text-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-3);margin-top:auto}
.card-meta .sep{width:1px;height:12px;background:var(--line-strong)}
.card-lg{grid-column:span 7}
.card-stack{grid-column:span 5;display:grid;gap:24px;align-content:start}
.mini-card{
  display:grid;grid-template-columns:112px 1fr;gap:16px;background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:16px;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  box-shadow:var(--shadow-card);
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--glow)}
.mini-card img{width:112px;height:100%;min-height:88px;object-fit:cover}
.mini-card .mc-title{font-size:17px;font-weight:600;line-height:1.5;margin-top:8px}
.mini-card .mc-text{color:var(--text-2);font-size:14px;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ============ Stats ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{padding:30px 26px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-2);box-shadow:var(--shadow-card)}
.stat:nth-child(even) .stat-value{color:#B7A6FF}
.stat-value{font-family:'Barlow','Inter',system-ui,sans-serif;font-size:42px;font-weight:700;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-label{font-size:14px;color:var(--text-2);margin-top:8px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;align-items:center}

/* ============ News (CMS) ============ */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:grid;grid-template-columns:196px 1fr;gap:18px;padding:16px;background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--glow)}
.news-card .nc-cover{overflow:hidden;border-radius:var(--radius-img);position:relative}
.news-card .nc-cover img{width:196px;height:128px;object-fit:cover;border-radius:var(--radius-img);transition:transform .5s var(--ease)}
.news-card:hover .nc-cover img{transform:scale(1.03)}
.news-card .nc-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-card .nc-title{font-size:17px;font-weight:600;line-height:1.5}
.news-card .nc-text{color:var(--text-2);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .nc-foot{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-3)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--radius-card);text-align:center;
}
.empty-state p{color:var(--text-2);font-size:15px}
.list-head-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:26px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--text);
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border:1px solid var(--line-strong);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  transition:transform .34s var(--ease),border-color .24s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--brand);box-shadow:0 0 14px -2px rgba(43,224,198,.6)}
.faq-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .34s var(--ease)}
.faq-item.open .faq-body{grid-template-rows:1fr}
.faq-body > div{overflow:hidden}
.faq-body p{color:var(--text-2);font-size:15px;line-height:1.85;padding:0 40px 26px 4px}

/* ============ CTA / form ============ */
.cta-band{
  border:1px solid var(--line-strong);border-radius:20px;padding:48px 52px;
  background:linear-gradient(120deg,rgba(43,224,198,.07) 0%,rgba(14,20,26,1) 46%,rgba(123,92,255,.09) 100%);
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
  box-shadow:var(--shadow-card);
}
.cta-title{font-size:30px;font-weight:700}
.cta-text{color:var(--text-2);font-size:15px;margin-top:14px;max-width:520px}
.field-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:8px;letter-spacing:.08em}
.field-input{
  width:100%;padding:13px 16px;border-radius:var(--radius-btn);background:#0B1116;
  border:1px solid #22303A;color:var(--text);transition:all .24s var(--ease);
}
.field-input::placeholder{color:var(--text-3)}
.field-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,224,198,.16)}
.field-row{display:flex;gap:12px;margin-top:8px}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px}

/* ============ Footer ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-text{color:var(--text-2);font-size:14px;max-width:320px}
.footer-col h4{font-size:14px;letter-spacing:.1em;color:var(--text-3);font-weight:600;margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col a,.footer-col span{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-sep{border-left:1px solid var(--line);padding-left:40px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:70;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line-strong);background:rgba(14,20,26,.92);color:var(--brand);
  display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;
  transition:all .3s var(--ease);
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:rgba(43,224,198,.12);box-shadow:var(--glow)}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:1279px){
  .container{max-width:1240px}
}
@media (max-width:1024px){
  .container{padding:0 32px}
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{height:60px}
  .mobile-drawer{top:60px}
  .section{padding:76px 0}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px;min-height:auto}
  .hero-visual{order:2}
  .float-card{left:16px;bottom:16px}
  .split{grid-template-columns:1fr;gap:40px}
  .feature-grid{grid-template-columns:repeat(6,1fr)}
  .card-lg{grid-column:span 6}
  .card-stack{grid-column:span 6}
  .stats{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:38px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-sep{border-left:0;padding-left:0}
  .section-title{font-size:31px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .news-grid{grid-template-columns:1fr}
  .news-card{grid-template-columns:1fr;gap:14px}
  .news-card .nc-cover img{width:100%;height:auto;aspect-ratio:16/9}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:15px}
  .hero{padding:52px 0 60px;min-height:520px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-trust{font-size:11.5px}
  .float-card{position:static;margin-top:16px;min-width:0}
  .section-title{font-size:26px}
  .card-lg{grid-column:span 6}
  .card-title-lg{font-size:22px}
  .stats{grid-template-columns:1fr}
  .stat-value{font-size:34px}
  .mini-card{grid-template-columns:1fr}
  .mini-card img{width:100%;height:auto;aspect-ratio:16/9;min-height:0}
  .faq-q{font-size:15.5px;padding:20px 0}
  .faq-body p{padding:0 0 20px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-title{font-size:23px}
  .field-row{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#080C10; --bg-1:#0E141A; --bg-2:#141C24;
  --brand:#2BE0C6; --brand-2:#7B5CFF; --hot:#FF4D6D;
  --line:rgba(43,224,198,.16); --line-strong:rgba(43,224,198,.42);
  --text:#E9F2F3; --text-2:#93A6AE; --text-3:#5C6E77;
  --radius-card:16px; --radius-img:14px; --radius-btn:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --glow:0 0 26px -8px rgba(43,224,198,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  --font-num:'Barlow','Inter',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  font-feature-settings:"tnum" 1;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(43,224,198,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(43,224,198,.06) 1px,transparent 1px);
  background-size:48px 48px;opacity:.4;
}
.bg-beam{
  position:fixed;top:-10%;left:-20%;width:140%;height:46%;
  z-index:0;pointer-events:none;transform:rotate(-12deg);
  background:linear-gradient(90deg,rgba(43,224,198,0),rgba(43,224,198,.10),rgba(123,92,255,.10),rgba(123,92,255,0));
  filter:blur(6px);animation:beamMove 20s linear infinite;
}
@keyframes beamMove{
  0%{transform:translateX(-6%) rotate(-12deg)}
  50%{transform:translateX(6%) rotate(-12deg)}
  100%{transform:translateX(-6%) rotate(-12deg)}
}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;position:relative;z-index:2}
@media (min-width:1280px){.container{max-width:1240px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:68px;
  background:rgba(10,14,18,.94);backdrop-filter:blur(8px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(43,224,198,0),var(--brand) 30%,var(--brand-2) 70%,rgba(123,92,255,0));
  opacity:.7;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.logo-mark{color:var(--brand);flex:none}
.nav-desktop{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 0;
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{height:2px;transform:scaleX(1);box-shadow:0 0 10px rgba(43,224,198,.8)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--text);
  cursor:pointer;transition:border-color .25s,color .25s;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand)}
.mobile-drawer{
  display:none;flex-direction:column;gap:2px;padding:12px 20px 24px;
  background:rgba(10,14,18,.98);border-top:1px solid var(--line);
}
.mobile-drawer.is-open{display:flex}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(43,224,198,.12);
}
.drawer-link.is-active,.drawer-link:hover{color:var(--brand)}
.drawer-cta{margin-top:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:all .25s var(--ease);
}
.btn-primary{background:var(--brand);color:#052723;border-color:var(--brand)}
.btn-primary:hover{background:#48ebd3;box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{background:rgba(43,224,198,.08);color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);
  padding-bottom:2px;border-bottom:1px solid rgba(43,224,198,.35);
  transition:border-color .25s;
}
.text-link:hover{border-color:var(--brand)}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;border:1px solid var(--line);color:var(--brand);
  background:rgba(43,224,198,.06);
}
.badge-hot{color:var(--hot);border-color:rgba(255,77,109,.35);background:rgba(255,77,109,.08)}
.badge-purple{color:#B9A8FF;border-color:rgba(123,92,255,.35);background:rgba(123,92,255,.08)}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--hot);box-shadow:0 0 8px var(--hot)}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;padding:44px 0 40px;
  background:linear-gradient(180deg,rgba(14,20,26,.9),rgba(8,12,16,0));
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;right:-8%;top:-40%;width:52%;height:180%;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.24;transform:rotate(-6deg);
  -webkit-mask-image:linear-gradient(270deg,#000,transparent 78%);
  mask-image:linear-gradient(270deg,#000,transparent 78%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:var(--text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  font-size:clamp(30px,4.2vw,54px);font-weight:800;line-height:1.14;
  max-width:900px;margin-bottom:22px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  font-size:13.5px;color:var(--text-2);padding-top:20px;border-top:1px solid var(--line);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{color:var(--brand);opacity:.9}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(280px,4fr);
  gap:52px;padding:56px 0 24px;align-items:start;
}
.article-body{max-width:820px;font-size:16px;color:#D6E2E5}
.article-body>p:first-of-type{font-size:17px;color:#E2EDEF}
.article-body p{margin:1.2em 0;line-height:1.9}
.article-body h2{
  position:relative;padding-left:18px;margin:44px 0 18px;
  font-size:clamp(23px,2.4vw,30px);font-weight:700;line-height:1.32;color:var(--text);
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));box-shadow:0 0 12px rgba(43,224,198,.45);
}
.article-body h3{margin:30px 0 12px;font-size:21px;font-weight:600;color:var(--text);line-height:1.4;scroll-margin-top:96px}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--brand)}
.article-body ul,.article-body ol{margin:1.2em 0}
.article-body li{position:relative;padding-left:20px;margin:.55em 0;line-height:1.85}
.article-body li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(43,224,198,.6);
}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li;padding-left:30px}
.article-body ol li::before{
  content:counter(li);width:auto;height:auto;left:0;top:0;background:none;box-shadow:none;
  color:var(--brand);font-family:var(--font-num);font-weight:600;font-size:15px;
}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:rgba(43,224,198,.08);border-radius:0 12px 12px 0;color:#CFE3E6;
}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(43,224,198,.4);transition:border-color .2s}
.article-body a:hover{border-color:var(--brand)}
.article-body img{
  margin:1.7em auto;border-radius:var(--radius-img);border:1px solid var(--line);height:auto;
}
.article-body figcaption,.article-body .caption{
  text-align:center;font-size:13px;color:var(--text-3);margin-top:-1em;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th{
  text-align:left;padding:12px 16px;color:var(--brand);font-weight:600;
  background:rgba(43,224,198,.07);border-bottom:1px solid var(--line);
}
.article-body td{padding:12px 16px;border-top:1px solid rgba(43,224,198,.1);color:#C9D7DA}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:var(--bg-2);
  padding:2px 7px;border-radius:6px;color:var(--brand);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:72px 24px;background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--radius-card);
}
.empty-state svg{color:var(--brand);opacity:.85}
.empty-state p{margin:0;color:var(--text-2);font-size:15px}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
  transition:border-color .3s var(--ease);
}
.side-card:hover{border-color:var(--line-strong)}
.side-title{
  display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--text-2);font-family:var(--font-num);margin-bottom:16px;
}
.side-title::before{content:"";width:16px;height:1px;background:var(--brand)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;font-size:14px;color:var(--text-2);padding:7px 10px;border-left:2px solid transparent;
  border-radius:0 8px 8px 0;transition:all .22s var(--ease);line-height:1.55;
}
.toc-list a:hover{color:var(--text);background:rgba(43,224,198,.05)}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(43,224,198,.07)}
.toc-empty{font-size:13.5px;color:var(--text-3)}
.hot-list{display:flex;flex-direction:column}
.hot-item{
  display:flex;gap:12px;padding:14px 0;border-top:1px solid rgba(43,224,198,.12);
  transition:transform .25s var(--ease);
}
.hot-item:first-child{border-top:0;padding-top:0}
.hot-item:hover{transform:translateX(3px)}
.hot-num{
  font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--text-3);
  line-height:1.2;min-width:26px;
}
.hot-item:hover .hot-num{color:var(--brand)}
.hot-item h4{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:5px;color:var(--text)}
.hot-item p{margin:0;font-size:13px;color:var(--text-3);line-height:1.6}
.sub-form{display:flex;flex-direction:column;gap:12px}
.form-label{font-size:12.5px;color:var(--text-3);letter-spacing:.04em}
.form-input{
  width:100%;padding:11px 14px;border-radius:var(--radius-btn);
  background:var(--bg-0);border:1px solid #22303A;color:var(--text);
  transition:border-color .25s,box-shadow .25s;
}
.form-input::placeholder{color:var(--text-3)}
.form-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,224,198,.14)}
.form-note{font-size:12.5px;color:var(--text-3);margin:0}
.form-note.is-ok{color:var(--brand)}

/* ---------- related ---------- */
.related-section{padding:64px 0 8px;border-top:1px solid var(--line);margin-top:56px}
.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:clamp(22px,2.6vw,32px);font-weight:700}
.section-head p{margin:8px 0 0;color:var(--text-2);font-size:15px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hcard{
  display:flex;gap:16px;padding:16px;background:var(--bg-1);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.hcard:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--glow)}
.hcard-thumb{
  width:120px;height:88px;flex:none;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);
}
.hcard-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.hcard:hover .hcard-thumb img{transform:scale(1.06)}
.hcard-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.hcard-body h3{font-size:16px;font-weight:600;line-height:1.5;color:var(--text)}
.hcard-body p{margin:0;font-size:13.5px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hcard-meta{font-size:12.5px;color:var(--text-3);font-family:var(--font-num)}

/* ---------- post nav ---------- */
.post-nav{display:flex;flex-wrap:wrap;gap:16px;padding:56px 0 0}
.post-nav .btn{flex:1 1 220px}
.back-list{display:flex;justify-content:center;padding:24px 0 0}

/* ---------- cta band ---------- */
.cta-band{margin:72px 0 0;padding:56px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:34px 36px;border-radius:20px;
  background:linear-gradient(120deg,rgba(43,224,198,.09),rgba(123,92,255,.09));
  border:1px solid var(--line-strong);box-shadow:var(--shadow-card);
}
.cta-inner h3{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:8px}
.cta-inner p{margin:0;color:var(--text-2);font-size:15px;max-width:520px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form .form-input{min-width:240px}

/* ---------- footer ---------- */
.site-footer{margin-top:72px;background:var(--bg-1);border-top:1px solid var(--line);position:relative;z-index:2}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-brand .logo-mark{color:var(--brand)}
.footer-text{margin:0;font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:var(--text-3);font-family:var(--font-num);text-transform:uppercase;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .22s}
.footer-col a:hover{color:var(--brand)}
.footer-sep{border-left:1px solid rgba(43,224,198,.12);padding-left:32px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 32px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}

.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;width:44px;height:44px;
  display:none;align-items:center;justify-content:center;border-radius:50%;
  background:rgba(14,20,26,.94);border:1px solid var(--line-strong);color:var(--brand);
  cursor:pointer;transition:all .25s var(--ease);
}
.to-top:hover{box-shadow:var(--glow);transform:translateY(-3px)}
.to-top.is-show{display:flex}

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

@media (max-width:1024px){
  .container{padding:0 32px}
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .article-layout{grid-template-columns:1fr;gap:40px;padding-top:44px}
  .article-side{position:static}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-sep{border-left:0;padding-left:0}
}
@media (max-width:768px){
  .article-hero{padding:30px 0 28px}
  .article-hero::before{opacity:.14}
  .breadcrumb .current{max-width:200px}
  .article-body h2{margin-top:36px}
  .cta-inner{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .logo span{font-size:15.5px}
  .article-title{font-size:30px}
  .article-layout{padding-top:34px}
  .related-section{padding-top:44px;margin-top:40px}
  .hcard{flex-direction:column}
  .hcard-thumb{width:100%;height:150px}
  .cta-band{padding:44px 0}
  .cta-form{width:100%}
  .cta-form .form-input{min-width:0;width:100%}
  .cta-form .btn{width:100%}
  .post-nav .btn{flex:1 1 100%}
  .to-top{right:16px;bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#080C10;
  --bg-1:#0E141A;
  --bg-2:#141C24;
  --brand:#2BE0C6;
  --brand-2:#7B5CFF;
  --hot:#FF4D6D;
  --line:rgba(43,224,198,.16);
  --line-strong:rgba(43,224,198,.42);
  --text:#E9F2F3;
  --text-2:#93A6AE;
  --text-3:#5C6E77;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 18px 40px -24px rgba(0,0,0,.9);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(43,224,198,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(43,224,198,.04) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  top:-30%;
  left:-10%;
  width:150%;
  height:180%;
  background:linear-gradient(12deg,rgba(43,224,198,.08) 0%,rgba(43,224,198,0) 42%,rgba(123,92,255,.08) 100%);
  pointer-events:none;
  z-index:0;
  animation:drift 20s linear infinite alternate;
}
@keyframes drift{
  from{transform:translate3d(-2%,0,0);}
  to{transform:translate3d(2%,1.5%,0);}
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
  position:relative;
  z-index:1;
}
@media (min-width:1280px){ .container{max-width:1240px;} }

/* ---------- 顶栏导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,14,18,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  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) 70%,transparent);
  opacity:.8;
}
.nav-wrap{
  height:68px;
  display:flex;
  align-items:center;
  gap:32px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:17px;
  letter-spacing:-.01em;
  color:var(--text);
  white-space:nowrap;
}
.logo-mark{color:var(--brand);filter:drop-shadow(0 0 6px rgba(43,224,198,.45));}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  padding:22px 14px;
  font-size:15px;
  color:var(--text-2);
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:14px;
  height:1px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s var(--ease);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  height:2px;
  transform:scaleX(1);
  box-shadow:0 0 10px rgba(43,224,198,.8);
}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  cursor:pointer;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(43,224,198,.08);}
.mobile-drawer{
  display:none;
  padding:8px 20px 22px;
  background:rgba(8,12,16,.98);
  border-top:1px solid var(--line);
}
.mobile-drawer.is-open{display:block;}
.drawer-link{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:15px 4px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--brand);}
.drawer-cta{margin-top:18px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn-sm{padding:10px 16px;font-size:14px;}
.btn-primary{
  background:var(--brand);
  color:#06231F;
  box-shadow:0 0 0 rgba(43,224,198,0);
}
.btn-primary:hover{
  filter:brightness(1.08);
  box-shadow:0 0 26px -6px rgba(43,224,198,.65);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{background:rgba(43,224,198,.08);color:var(--brand);}
.btn-block{width:100%;}
.link-line{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.link-line::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:100%;
  height:1px;
  background:currentColor;
  transform:scaleX(.4);
  transform-origin:left;
  transition:transform .28s var(--ease);
}
.link-line:hover::after{transform:scaleX(1);}

/* ---------- 小 Hero 横幅 ---------- */
.page-banner{
  position:relative;
  min-height:308px;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-banner .banner-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.page-banner .banner-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(to top right,rgba(8,12,16,.96) 8%,rgba(8,12,16,.82) 45%,rgba(8,12,16,.55) 100%);
}
.page-banner .banner-inner{
  position:relative;
  width:100%;
  padding:64px 0 42px;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);}
.crumbs .now{color:#fff;}
.banner-title{
  font-size:clamp(30px,4vw,50px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  max-width:820px;
}
.banner-title em{
  font-style:normal;
  color:var(--brand);
  text-shadow:0 0 26px rgba(43,224,198,.35);
}
.banner-sub{
  margin-top:16px;
  font-size:15px;
  color:var(--text-2);
  max-width:720px;
}
.banner-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(43,224,198,.06);
  color:var(--brand);
  font-size:12px;
  letter-spacing:.08em;
}
.badge-volt{
  border-color:rgba(123,92,255,.35);
  background:rgba(123,92,255,.1);
  color:#B7A6FF;
}
.badge-hot{
  border-color:rgba(255,77,109,.4);
  background:rgba(255,77,109,.12);
  color:#FF8095;
}
.dot-live{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--hot);
  box-shadow:0 0 8px rgba(255,77,109,.9);
  animation:pulse 1.8s infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.45;transform:scale(.82);}
}

/* ---------- 数据速览条 ---------- */
.stats-bar{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  margin:-42px 0 0;
  position:relative;
  z-index:2;
  box-shadow:var(--shadow);
}
.stat-cell{
  background:var(--bg-1);
  padding:26px 24px;
}
.stat-num{
  font-family:'Barlow','Inter',system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:32px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--brand);
}
.stat-cell:nth-child(even) .stat-num{color:#A99AFF;}
.stat-label{
  margin-top:6px;
  font-size:13px;
  color:var(--text-2);
}

/* ---------- 主体布局 ---------- */
.section{padding:96px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
}
.section-head .lead{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:620px;
}
.eyebrow{
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--brand);
  font-family:'Barlow','Inter',system-ui,sans-serif;
  margin-bottom:12px;
  display:block;
}

.mech-layout{
  display:grid;
  grid-template-columns:200px minmax(0,1fr);
  gap:36px;
  align-items:start;
}
.filter-panel{
  position:sticky;
  top:96px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  padding:18px 0;
}
.filter-title{
  padding:0 20px 14px;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--text-3);
  font-family:'Barlow','Inter',system-ui,sans-serif;
  border-bottom:1px solid var(--line);
  margin-bottom:8px;
}
.filter-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding:11px 20px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:color .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
  cursor:pointer;
}
.filter-item:hover{color:#fff;background:rgba(43,224,198,.05);}
.filter-item.is-active{
  color:var(--brand);
  border-left-color:var(--brand);
  background:rgba(43,224,198,.07);
}
.filter-count{
  font-family:'Barlow','Inter',system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--text-3);
}
.filter-note{
  margin:14px 20px 6px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.75;
}

.mech-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.mech-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.mech-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow),0 0 26px -8px rgba(43,224,198,.5);
}
.mech-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.mech-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.mech-card:hover .mech-thumb img{transform:scale(1.03);}
.mech-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top right,rgba(8,12,16,.72),rgba(8,12,16,0) 62%);
}
.mech-thumb .thumb-badge{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
}
.mech-body{
  padding:22px 22px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.mech-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
}
.mech-body h3 a:hover{color:var(--brand);}
.mech-body p{
  margin-top:10px;
  font-size:14.5px;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mech-meta{
  margin-top:auto;
  padding-top:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.mech-meta .cat{color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{
  max-width:900px;
  border-top:1px solid var(--line);
}
.q-item{border-bottom:1px solid var(--line);}
.q-head{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:22px 2px;
  background:none;
  border:0;
  text-align:left;
  cursor:pointer;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .22s var(--ease);
}
.q-head:hover{color:var(--brand);}
.q-sign{
  flex:none;
  width:20px;height:20px;
  margin-top:4px;
  position:relative;
  transition:transform .3s var(--ease);
  color:var(--brand);
}
.q-sign::before,.q-sign::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.q-sign::before{left:0;top:9px;width:20px;height:1.6px;}
.q-sign::after{left:9px;top:0;width:1.6px;height:20px;}
.q-item.is-open .q-sign{transform:rotate(45deg);}
.q-body{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .42s var(--ease);
}
.q-body > div{overflow:hidden;}
.q-body p{
  padding:0 40px 24px 2px;
  font-size:15.5px;
  color:var(--text-2);
  line-height:1.8;
}
.q-item.is-open .q-body{grid-template-rows:1fr;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border:1px solid var(--line-strong);
  border-radius:20px;
  background:
    radial-gradient(120% 140% at 0% 0%,rgba(43,224,198,.12),transparent 55%),
    radial-gradient(120% 140% at 100% 100%,rgba(123,92,255,.16),transparent 55%),
    var(--bg-1);
  padding:44px 44px;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:32px;
  align-items:center;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;}
.cta-band p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:520px;}
.sub-form{
  display:flex;
  gap:12px;
  align-items:flex-end;
  flex-wrap:wrap;
}
.field{flex:1 1 240px;min-width:0;}
.field label{
  display:block;
  font-size:12px;
  color:var(--text-3);
  margin-bottom:8px;
  letter-spacing:.06em;
}
.field input{
  width:100%;
  padding:13px 16px;
  background:#0B1116;
  border:1px solid #22303A;
  border-radius:var(--r-btn);
  color:var(--text);
  outline:none;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.field input::placeholder{color:var(--text-3);}
.field input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(43,224,198,.16);
}
.form-hint{
  margin-top:12px;
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(14,20,26,.9),rgba(8,12,16,1));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding:64px 0 40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:17px;
}
.footer-brand .logo-mark{color:var(--brand);}
.footer-text{
  margin-top:16px;
  font-size:14px;
  color:var(--text-2);
  max-width:340px;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  font-family:'Barlow','Inter',system-ui,sans-serif;
  margin-bottom:16px;
}
.footer-col li{margin-bottom:11px;}
.footer-col a,.footer-col span{
  font-size:14px;
  color:var(--text-2);
  transition:color .22s var(--ease);
}
.footer-col a:hover{color:var(--brand);}
.footer-sep{border-left:1px solid var(--line);padding-left:32px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 34px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  position:fixed;
  right:26px;
  bottom:26px;
  width:44px;height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(14,20,26,.9);
  color:var(--brand);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
  z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(43,224,198,.12);box-shadow:0 0 22px -6px rgba(43,224,198,.7);}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{height:60px;gap:16px;}
  .mech-layout{grid-template-columns:1fr;gap:24px;}
  .filter-panel{position:static;display:flex;flex-wrap:wrap;padding:10px;gap:6px;}
  .filter-title{display:none;}
  .filter-note{display:none;}
  .filter-item{border-left:0;border:1px solid var(--line);border-radius:999px;padding:8px 14px;}
  .filter-item.is-active{border-color:var(--line-strong);}
  .filter-count{display:none;}
  .stats-bar{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:32px;}
  .cta-band{grid-template-columns:1fr;padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-sep{border-left:0;padding-left:0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  body::after{animation:none;}
  .mech-grid{grid-template-columns:1fr;}
  .banner-title{font-size:clamp(26px,7vw,32px);}
  .banner-inner{padding:48px 0 32px;}
  .page-banner{min-height:260px;}
  .stat-cell{padding:20px 18px;}
  .stat-num{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sub-form{flex-direction:column;align-items:stretch;}
  .field{flex:1 1 auto;}
  .sub-form .btn{width:100%;}
  .to-top{right:16px;bottom:16px;}
  .section-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .banner-tags{gap:8px;}
  .badge{font-size:11.5px;padding:4px 10px;}
  .q-head{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --bg-0:#080C10;
  --bg-1:#0E141A;
  --bg-2:#141C24;
  --brand:#2BE0C6;
  --brand-2:#7B5CFF;
  --hot:#FF4D6D;
  --line:rgba(43,224,198,.16);
  --line-strong:rgba(43,224,198,.42);
  --text:#E9F2F3;
  --text-2:#93A6AE;
  --text-3:#5C6E77;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-glow:0 0 26px -8px rgba(43,224,198,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  --font-num:'Barlow','Inter',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  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(to right,rgba(43,224,198,.04) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(43,224,198,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
body::after{
  content:"";
  position:fixed;
  top:-20%;
  left:-40%;
  width:180%;
  height:140%;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(12deg,transparent 38%,rgba(43,224,198,.08) 50%,rgba(123,92,255,.08) 58%,transparent 70%);
  animation:sheen 20s linear infinite;
}
@keyframes sheen{
  0%{transform:translateX(-6%)}
  50%{transform:translateX(6%)}
  100%{transform:translateX(-6%)}
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{font-weight:700;line-height:1.25}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
  position:relative;
  z-index:2;
}
.site-main{position:relative;z-index:2}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,14,18,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,224,198,.75),rgba(123,92,255,.7),transparent);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
  white-space:nowrap;
}
.logo-mark{color:var(--brand);filter:drop-shadow(0 0 8px rgba(43,224,198,.35))}
.nav-desktop{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  padding:0 14px;
  font-size:15px;
  color:var(--text-2);
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:16px;
  height:1px;
  background:rgba(43,224,198,.55);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  bottom:12px;
  height:2px;
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(43,224,198,.75);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  cursor:pointer;
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(43,224,198,.06)}
.mobile-drawer{
  display:none;
  flex-direction:column;
  padding:8px 20px 22px;
  background:rgba(9,13,17,.98);
  border-bottom:1px solid var(--line);
}
.mobile-drawer.is-open{display:flex}
.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:15px 2px;
  font-size:15px;
  color:var(--text-2);
  border-top:1px solid var(--line);
  transition:color .25s var(--ease),padding-left .25s var(--ease);
}
.drawer-link:first-child{border-top:none}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand);padding-left:6px}
.drawer-cta{margin-top:18px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
}
.btn-primary{background:var(--brand);color:#04140F}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 26px -6px rgba(43,224,198,.6)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border-color:var(--line-strong);color:var(--text);background:transparent}
.btn-ghost:hover{background:rgba(43,224,198,.08);color:var(--brand);border-color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.btn-text i{
  display:block;
  width:0;
  height:1px;
  background:var(--brand);
  transition:width .3s var(--ease);
}
.btn-text:hover i{width:18px}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brand);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.h2{font-size:34px;letter-spacing:-.015em}
.section-desc{color:var(--text-2);font-size:16px;margin-top:14px;max-width:640px}
.divider{height:1px;background:var(--line);border:none;margin:0}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(43,224,198,.06);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--brand);
}
.badge-purple{border-color:rgba(123,92,255,.35);background:rgba(123,92,255,.1);color:#B7A6FF}
.badge-hot{border-color:rgba(255,77,109,.4);background:rgba(255,77,109,.1);color:#FF7C93}
.dot-live{
  width:6px;height:6px;border-radius:50%;background:var(--hot);
  box-shadow:0 0 8px rgba(255,77,109,.9);
}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);transition:color .25s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{margin:0 8px;opacity:.55}
.breadcrumb .current{color:var(--text)}

/* ============ 页首横幅 ============ */
.page-hero{
  position:relative;
  margin-top:22px;
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  background:var(--bg-1);
  min-height:320px;
  display:flex;
  align-items:center;
  box-shadow:var(--shadow-1);
}
.page-hero-media{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  opacity:.5;
}
.page-hero-mask{
  position:absolute;
  inset:0;
  background:
    linear-gradient(100deg,rgba(8,12,16,.96) 8%,rgba(8,12,16,.82) 46%,rgba(8,12,16,.35) 100%),
    linear-gradient(to top,rgba(8,12,16,.85),transparent 60%);
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:56px 56px;
  max-width:760px;
}
.page-title{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  margin:14px 0 0;
}
.page-title em{font-style:normal;color:var(--brand)}
.page-lede{
  margin-top:18px;
  font-size:16px;
  color:var(--text-2);
  max-width:620px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ============ 数据条 ============ */
.stat-strip{
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat-cell{
  background:var(--bg-1);
  padding:24px 22px;
}
.stat-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:30px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--brand);
  line-height:1.1;
}
.stat-num.purple{color:#A08CFF}
.stat-label{margin-top:8px;font-size:13px;color:var(--text-2)}
.stat-note{font-size:12px;color:var(--text-3);margin-top:4px}

/* ============ 编号图文交错 ============ */
.zig-list{border-top:1px solid var(--line)}
.zig-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:52px;
  align-items:center;
  padding:52px 0;
  border-bottom:1px solid var(--line);
}
.zig-item .zig-media{order:2}
.zig-item.reverse .zig-media{order:-1}
.zig-media{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--bg-2);
  box-shadow:var(--shadow-1);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.zig-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.zig-item:hover .zig-media{border-color:var(--line-strong);box-shadow:var(--shadow-1),var(--shadow-glow)}
.zig-item:hover .zig-media img{transform:scale(1.03)}
.zig-media-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(8,12,16,.72),transparent 55%);
}
.zig-media-tag{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
}
.zig-index{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:58px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(43,224,198,.4);
  letter-spacing:.02em;
}
.zig-title{
  font-size:25px;
  font-weight:700;
  letter-spacing:-.01em;
  margin-top:14px;
}
.zig-text{
  margin-top:14px;
  color:var(--text-2);
  font-size:16px;
}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.point-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--text-2);
}
.point-list li svg{flex:0 0 auto;margin-top:6px;color:var(--brand)}
.zig-link{margin-top:22px}

/* ============ 流程时间轴 ============ */
.flow-wrap{
  border:1px solid var(--line);
  border-radius:20px;
  background:linear-gradient(180deg,rgba(20,28,36,.9),rgba(14,20,26,.9));
  padding:48px 44px;
}
.timeline{position:relative;margin-top:34px;padding-left:34px}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:8px;
  bottom:8px;
  width:1px;
  background:linear-gradient(180deg,var(--brand),rgba(123,92,255,.55),rgba(43,224,198,.05));
}
.tl-item{position:relative;padding:0 0 38px 0}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-33px;
  top:8px;
  width:15px;
  height:15px;
  border-radius:50%;
  background:var(--bg-0);
  border:1px solid var(--line-strong);
  box-shadow:0 0 12px rgba(43,224,198,.45);
}
.tl-item::after{
  content:"";
  position:absolute;
  left:-29px;
  top:12px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand);
}
.tl-step{
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brand);
}
.tl-title{font-size:20px;font-weight:600;margin-top:8px}
.tl-text{margin-top:8px;color:var(--text-2);font-size:15px;max-width:720px}
.tl-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--text-3)}
.tl-meta strong{color:var(--text);font-weight:600}

/* ============ 核对清单 ============ */
.check-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:start;
}
.check-panel{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--bg-1);
  padding:30px 28px;
  box-shadow:var(--shadow-1);
}
.check-item{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.check-item:last-child{border-bottom:none;padding-bottom:0}
.check-item:first-child{padding-top:0}
.check-mark{
  flex:0 0 auto;
  width:24px;
  height:24px;
  margin-top:3px;
  border-radius:7px;
  border:1px solid var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  background:rgba(43,224,198,.07);
}
.check-item h4{font-size:16px;font-weight:600}
.check-item p{font-size:14px;color:var(--text-2);margin-top:6px}
.warn-box{
  margin-top:24px;
  border-left:3px solid var(--brand);
  background:rgba(43,224,198,.06);
  padding:18px 20px;
  border-radius:0 10px 10px 0;
  font-size:15px;
  color:var(--text-2);
}
.warn-box strong{color:var(--text)}

/* ============ CTA ============ */
.cta-band{
  border:1px solid var(--line-strong);
  border-radius:20px;
  padding:44px 48px;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:36px;
  align-items:center;
  background:
    radial-gradient(120% 160% at 0% 0%,rgba(43,224,198,.12),transparent 55%),
    radial-gradient(120% 160% at 100% 100%,rgba(123,92,255,.14),transparent 55%),
    var(--bg-1);
}
.cta-title{font-size:28px;font-weight:700;letter-spacing:-.015em}
.cta-text{margin-top:12px;color:var(--text-2);font-size:15px;max-width:520px}
.form-row{display:flex;gap:12px}
.field{flex:1;display:flex;flex-direction:column;gap:8px}
.field label{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.field input{
  height:46px;
  padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid #22303A;
  background:rgba(8,12,16,.75);
  color:var(--text);
  font-size:15px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,224,198,.14);outline:none}
.form-tip{margin-top:12px;font-size:12.5px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:2;
  border-top:1px solid var(--line);
  background:rgba(9,13,17,.92);
  padding:64px 0 26px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:0;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  margin-bottom:14px;
}
.footer-text{font-size:14px;color:var(--text-2);max-width:330px}
.footer-col{padding-left:28px;border-left:1px solid var(--line)}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .25s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  position:fixed;
  right:24px;
  bottom:26px;
  z-index:70;
  width:44px;
  height:44px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(9,13,17,.9);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),box-shadow .3s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{box-shadow:var(--shadow-glow);border-color:var(--brand)}

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

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 32px}
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:76px 0}
  .section-tight{padding:60px 0}
  .page-hero-inner{padding:44px 36px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .zig-item{grid-template-columns:1fr;gap:26px;padding:40px 0}
  .zig-item .zig-media,.zig-item.reverse .zig-media{order:0}
  .zig-index{font-size:46px}
  .check-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .footer-col{padding-left:0;border-left:none}
  .footer-col:nth-child(3),.footer-col:nth-child(4){padding-left:0}
  .flow-wrap{padding:36px 28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .nav-wrap{height:60px}
  .logo{font-size:16px}
  .page-hero{min-height:auto;border-radius:16px}
  .page-hero-inner{padding:34px 22px}
  .page-lede{font-size:15px}
  .section{padding:56px 0}
  .h2{font-size:26px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-cell{padding:18px 16px}
  .stat-num{font-size:24px}
  .zig-title{font-size:21px}
  .zig-text,.section-desc{font-size:15px}
  .flow-wrap{padding:28px 20px;border-radius:16px}
  .timeline{padding-left:28px}
  .tl-item::before{left:-29px}
  .tl-item::after{left:-25px}
  .check-panel{padding:24px 20px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-title{font-size:23px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 22px;margin-top:64px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .stat-strip{grid-template-columns:1fr}
  .page-title{font-size:28px}
  .zig-index{font-size:38px}
}