/* roulang page: index */
:root{
  --bg:#070C0F;
  --bg-2:#0C141A;
  --panel:#121E26;
  --card:#0F1A21;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --t1:#EAF2F2;
  --t2:#9FB0B8;
  --t3:#6B7C85;
  --acc:#00E5A0;
  --acc-soft:rgba(0,229,160,.12);
  --acc-line:rgba(0,229,160,.35);
  --acc2:#FF6B2C;
  --amber:#FFC53D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-in:10px;
  --sh:0 12px 40px rgba(0,0,0,.45);
  --sh-hi:0 0 0 1px rgba(0,229,160,.35),0 18px 50px rgba(0,0,0,.5);
  --max:1240px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 420px at 12% -8%,rgba(0,229,160,.07),transparent 60%),
    radial-gradient(760px 380px at 92% 6%,rgba(255,107,44,.05),transparent 62%);
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .2s ease-out}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.02em;color:var(--t1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:96px 0;position:relative;z-index:1}
.section--tight{padding:72px 0}
.section--panel{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--acc);font-family:var(--mono);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--acc);display:block}
h1{font-size:48px;line-height:1.25}
h2{font-size:30px;line-height:1.3}
h3{font-size:20px;line-height:1.4}
.lead{color:var(--t2);font-size:18px;line-height:1.85;margin-top:16px}
.muted{color:var(--t2)}
.small{font-size:13px;color:var(--t3)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,15,.96);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,160,.7) 22%,rgba(0,229,160,.7) 78%,transparent);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:72px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
}
.logo-mark{
  width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(0,229,160,.22),rgba(0,229,160,.04));
  border:1px solid var(--acc-line);
  color:var(--acc);font-family:var(--mono);font-size:14px;font-weight:700;
}
.logo strong{color:var(--t1)}
.logo span{color:var(--acc)}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{
  position:relative;
  padding:10px 14px;border-radius:8px;
  font-size:15px;color:var(--t2);
}
.nav-main a:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.nav-main a.is-active{
  color:var(--acc);
  background:rgba(0,229,160,.08);
  box-shadow:inset 0 0 0 1px rgba(0,229,160,.16);
}
.nav-main a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--acc);border-radius:2px;box-shadow:0 0 10px rgba(0,229,160,.8);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,background .2s ease-out,box-shadow .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--acc);color:#04140F;box-shadow:0 8px 24px rgba(0,229,160,.22)}
.btn-primary:hover{background:#1BF0B0;transform:translateY(-1px);box-shadow:0 10px 30px rgba(0,229,160,.35)}
.btn-ghost{background:transparent;color:var(--acc);border-color:var(--acc-line)}
.btn-ghost:hover{background:rgba(0,229,160,.1);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--t1);font-weight:600;padding-bottom:4px;
  background-image:linear-gradient(90deg,var(--acc),var(--acc));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size .22s ease-out,color .22s ease-out;
}
.link-arrow:hover{color:var(--acc);background-size:100% 2px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:transparent;border:1px solid var(--line-2);color:var(--t1);
  cursor:pointer;align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--acc-line);color:var(--acc)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
.hero-veil{position:absolute;inset:0;background:linear-gradient(105deg,rgba(7,12,15,.94) 0%,rgba(7,12,15,.82) 45%,rgba(7,12,15,.72) 100%)}
.hero-mesh{
  position:absolute;inset:0;opacity:.05;
  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:56px 56px;
}
.hero-inner{position:relative;z-index:2;padding:104px 0 88px;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:48px}
.hero h1 em{font-style:normal;color:var(--acc)}
.hero-sub{margin-top:18px;font-size:19px;color:#C6D3D6;line-height:1.8;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px;max-width:620px}
.hero-stat{border-left:2px solid var(--acc-line);padding-left:14px}
.hero-stat b{display:block;font-family:var(--mono);font-size:36px;line-height:1.1;color:var(--acc);letter-spacing:.01em}
.hero-stat span{font-size:14px;color:var(--t2)}
.hero-board{
  background:linear-gradient(180deg,rgba(18,30,38,.92),rgba(15,26,33,.92));
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:24px;
}
.board-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.board-head span{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--t3);text-transform:uppercase}
.board-dot{width:8px;height:8px;border-radius:50%;background:var(--acc);box-shadow:0 0 10px rgba(0,229,160,.9)}
.board-list{margin-top:8px}
.board-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line)}
.board-item:last-child{border-bottom:0}
.board-item b{font-size:15px;font-weight:600}
.board-item span{font-family:var(--mono);font-size:12px;color:var(--acc)}
.board-bar{height:4px;border-radius:4px;background:rgba(255,255,255,.06);margin-top:10px;overflow:hidden}
.board-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),rgba(0,229,160,.35))}

/* ---------- generic grids ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split--rev .split-media{order:2}

/* ---------- story ---------- */
.story-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.story-media img{width:100%;height:400px;object-fit:cover;border-radius:0}
.story-media figcaption{position:absolute;left:0;right:0;bottom:0;padding:16px 18px;background:linear-gradient(0deg,rgba(7,12,15,.92),transparent);font-size:13px;color:var(--t2)}
.story-points{margin-top:26px;display:grid;gap:16px}
.story-point{display:flex;gap:14px;align-items:flex-start}
.story-point i{
  flex:0 0 34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:var(--acc-soft);border:1px solid var(--acc-line);color:var(--acc);font-size:14px;
}
.story-point b{display:block;font-size:16px;margin-bottom:2px}
.story-point p{font-size:15px;color:var(--t2);line-height:1.8}

/* ---------- featured ---------- */
.feat-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);position:relative;
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
  display:flex;flex-direction:column;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--acc),rgba(0,229,160,0));z-index:3}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hi);border-color:var(--acc-line)}
.card-media{overflow:hidden;aspect-ratio:16/9;background:#0A1218}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:20px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card--lg .card-body h3{font-size:26px}
.card-excerpt{font-size:15.5px;color:var(--t2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card--lg .card-media{aspect-ratio:21/9}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:4px 10px;border-radius:999px;font-size:12px;letter-spacing:.04em;
  background:rgba(255,107,44,.12);color:#FFB08A;border:1px solid rgba(255,107,44,.28);
}
.badge--acc{background:var(--acc-soft);color:var(--acc);border-color:var(--acc-line)}
.badge--amber{background:rgba(255,197,61,.12);color:var(--amber);border-color:rgba(255,197,61,.3)}
.meta{font-family:var(--mono);font-size:12.5px;color:var(--t3);letter-spacing:.04em}

/* ---------- posts (cms) ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh);transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out}
.post-card::before{content:"";position:absolute}
.post-card{position:relative}
.post-card::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--acc),rgba(0,229,160,0));z-index:3}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hi);border-color:var(--acc-line)}
.post-media{display:block;aspect-ratio:16/9;overflow:hidden;background:#0A1218}
.post-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease-out}
.post-card:hover .post-media img{transform:scale(1.03)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a:hover{color:var(--acc)}
.post-excerpt{font-size:15px;color:var(--t2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.empty-state{
  border:1px dashed var(--line-2);border-radius:var(--r-card);padding:56px 24px;text-align:center;
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:30px;color:var(--t3);display:block;margin-bottom:14px}
.empty-state p{color:var(--t2);font-size:16px}
.empty-state .btn{margin-top:20px}

/* ---------- trust ---------- */
.trust-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-item b{display:block;font-family:var(--mono);font-size:44px;line-height:1.1;color:var(--acc)}
.trust-item span{display:block;margin-top:6px;font-size:14px;color:var(--t2)}
.partner-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px}
.partner{
  height:82px;border:1px solid var(--line);border-radius:var(--r-card);
  display:grid;place-items:center;color:var(--t3);font-size:14px;letter-spacing:.06em;
  background:rgba(255,255,255,.015);filter:grayscale(1);opacity:.75;
  transition:filter .22s ease-out,opacity .22s ease-out,border-color .22s ease-out,color .22s ease-out;
}
.partner:hover{filter:grayscale(0);opacity:1;border-color:var(--acc-line);color:var(--t1)}

/* ---------- cta ---------- */
.cta-panel{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:18px;
  background:linear-gradient(140deg,#0F1A21,#0A1319 60%);
  padding:56px;box-shadow:var(--sh);
}
.cta-panel::before{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,160,.16),transparent 62%);
}
.cta-panel::after{
  content:"";position:absolute;left:-140px;bottom:-180px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,44,.12),transparent 65%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:center}
.cta-form{display:flex;gap:10px;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:14px;padding:10px}
.cta-form input{
  flex:1;height:48px;border-radius:var(--r-in);border:1px solid var(--line-2);
  background:rgba(7,12,15,.6);color:var(--t1);padding:0 14px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.cta-form input::placeholder{color:var(--t3)}
.cta-form input:focus{outline:none;border-color:var(--acc);box-shadow:0 0 0 3px rgba(0,229,160,.16)}
.form-note{margin-top:12px;font-size:13px;color:var(--t3)}
.form-note.is-error{color:var(--acc2)}
.form-note.is-ok{color:var(--acc)}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 48px 22px 0;font-size:17px;font-weight:600;color:var(--t1);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:-14px;top:22px;bottom:22px;width:3px;border-radius:3px;
  background:transparent;transition:background .2s ease-out;
}
.faq-item summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:20px;color:var(--t3);transition:color .2s ease-out,transform .24s ease-out;
}
.faq-item[open] summary{color:var(--acc)}
.faq-item[open] summary::before{background:var(--acc);box-shadow:0 0 10px rgba(0,229,160,.8)}
.faq-item[open] summary::after{content:"–";color:var(--acc)}
.faq-item p{padding:0 48px 24px 0;color:var(--t2);font-size:15.5px;line-height:1.85}

/* ---------- footer ---------- */
.site-footer{background:#050A0D;border-top:1px solid var(--line);position:relative;z-index:1;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(0,229,160,.6),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--t2);line-height:1.9;max-width:320px}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--t1);margin-bottom:16px}
.footer-links a{display:block;padding:6px 0;font-size:14.5px;color:var(--t2);transition:color .2s ease-out,transform .2s ease-out}
.footer-links a:hover{color:var(--acc);transform:translateX(2px)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--t2);padding:5px 0}
.footer-contact i{color:var(--acc);margin-top:4px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13.5px;color:var(--t3);
}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--acc)}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  h1,.hero h1{font-size:40px}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:84px 0 72px}
  .hero-stats{max-width:100%}
  .feat-grid{grid-template-columns:1fr 1fr}
  .card--lg{grid-column:span 2}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .grid-3,.post-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4,.trust-bar,.partner-row{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .split--rev .split-media{order:0}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-main{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:#080F13;border-bottom:1px solid var(--line);
    padding:16px 24px 28px;transform:translateY(-140%);opacity:0;pointer-events:none;
    transition:transform .28s ease-out,opacity .28s ease-out;
    box-shadow:0 24px 50px rgba(0,0,0,.6);
  }
  .nav-main.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-main a{padding:16px 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-main a.is-active::after{left:0;right:auto;width:3px;height:22px;top:50%;bottom:auto;transform:translateY(-50%);box-shadow:0 0 10px rgba(0,229,160,.8)}
  .nav-main a.is-active{padding-left:16px;background:transparent;box-shadow:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:768px){
  body{font-size:16px}
  h1,.hero h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .section{padding:56px 0}
  .container{padding:0 18px}
  .hero-inner{padding:64px 0 56px}
  .hero-sub{font-size:17px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:14px}
  .hero-stat b{font-size:30px}
  .feat-grid{grid-template-columns:1fr}
  .card--lg{grid-column:auto}
  .grid-3,.post-grid,.grid-2{grid-template-columns:1fr}
  .trust-item b{font-size:36px}
  .cta-panel{padding:32px 22px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 28px}
  .hero-board{padding:18px}
}
@media (max-width:520px){
  .grid-4,.trust-bar,.partner-row{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr}
  .logo{font-size:16px}
  .nav-actions .btn-ghost{display:none}
  .faq-item p{padding-right:0}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: article */
:root{
  --bg:#070C0F;
  --bg-soft:#0C141A;
  --panel:#121E26;
  --card:#0F1A21;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --txt:#EAF2F2;
  --txt-2:#9FB0B8;
  --txt-3:#6B7C85;
  --neon:#00E5A0;
  --neon-dim:rgba(0,229,160,.12);
  --orange:#FF6B2C;
  --amber:#FFC53D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow:0 12px 40px rgba(0,0,0,.45);
  --shadow-up:0 12px 40px rgba(0,0,0,.45),0 0 0 1px rgba(0,229,160,.35);
  --maxw:1240px;
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.02em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
::selection{background:rgba(0,229,160,.28);color:#04120c}

/* ---------- 顶栏导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,15,.95);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,160,.75),transparent);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,#00E5A0,#00a976);
  color:#04120c;font-weight:800;font-size:14px;letter-spacing:.5px;
  box-shadow:0 0 18px rgba(0,229,160,.3);
}
.logo strong{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.logo strong span{color:var(--neon);margin:0 2px}
.nav-main{display:flex;align-items:center;gap:4px}
.nav-main a{
  position:relative;padding:10px 14px;border-radius:8px;
  color:var(--txt-2);font-size:15px;font-weight:500;
  transition:color var(--ease),background var(--ease);
}
.nav-main a:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-main a.is-active{color:var(--neon);background:var(--neon-dim)}
.nav-main a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(0,229,160,.85);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-2);
  background:transparent;color:var(--txt);font-size:17px;cursor:pointer;transition:all var(--ease);
}
.nav-toggle:hover{border-color:rgba(0,229,160,.5);color:var(--neon)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--neon);color:#04120c}
.btn-primary:hover{background:#1bf0ae;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(0,229,160,.35),0 10px 26px rgba(0,229,160,.28)}
.btn-ghost{background:transparent;border-color:rgba(0,229,160,.5);color:var(--neon)}
.btn-ghost:hover{background:rgba(0,229,160,.12)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn:focus-visible,.nav-main a:focus-visible,.link-arrow:focus-visible,.nav-toggle:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.btn:active{transform:translateY(0)}
.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(7,12,15,.86),rgba(7,12,15,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:52px 0 46px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 260px at 18% 0%,rgba(0,229,160,.10),transparent 70%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:20px}
.breadcrumb a{color:var(--txt-2);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:var(--txt-3)}
.breadcrumb .current{color:var(--txt-2)}
.page-title{
  font-size:40px;line-height:1.3;max-width:920px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;font-size:13px;color:var(--txt-3)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(255,107,44,.12);border:1px solid rgba(255,107,44,.35);
  color:#FFB08A;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item i{color:var(--txt-3)}

/* ---------- 文章布局 ---------- */
.section{padding:64px 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:56px;align-items:start;padding:64px 0 72px}
.article-main{min-width:0}

.post-body{max-width:780px;font-size:17px;line-height:1.9;color:#DCE7E7}
.post-body p{margin:0 0 1em}
.post-body h2{
  position:relative;margin:44px 0 18px;padding-left:18px;font-size:26px;color:var(--txt);
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:.36em;width:8px;height:18px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 12px rgba(0,229,160,.7);
}
.post-body h3{margin:32px 0 14px;font-size:19px;color:var(--txt)}
.post-body ul,.post-body ol{margin:0 0 1.2em;padding-left:1.35em;list-style:disc}
.post-body ol{list-style:decimal}
.post-body li{margin:.35em 0}
.post-body a{color:var(--neon);border-bottom:1px solid rgba(0,229,160,.35)}
.post-body a:hover{border-bottom-color:var(--neon)}
.post-body img{border-radius:var(--r-img);margin:22px 0 8px;width:100%;object-fit:cover}
.post-body figure{margin:24px 0}
.post-body figcaption{font-size:13px;color:var(--txt-3);text-align:center;margin-top:4px}
.post-body blockquote{
  margin:28px 0;padding:8px 0 8px 20px;border-left:3px solid var(--neon);
  background:linear-gradient(90deg,rgba(0,229,160,.07),transparent);
  color:var(--txt-2);
}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;margin:24px 0;font-size:15px}
.post-body th,.post-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.post-body th{background:rgba(255,255,255,.04);color:var(--txt)}
.post-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.post-body strong{color:#FFFFFF}
.post-body code{background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;font-size:15px}

.empty-state{
  max-width:780px;padding:56px 32px;border:1px dashed var(--line-2);border-radius:var(--r-card);
  background:var(--card);text-align:center;
}
.empty-state i{font-size:34px;color:var(--txt-3)}
.empty-state h2{margin:16px 0 10px;font-size:22px}
.empty-state p{color:var(--txt-2);margin-bottom:24px}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px 20px;box-shadow:var(--shadow);
}
.side-card h3{
  font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(0,229,160,.8)}
.side-list li+li{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;color:var(--txt-2);transition:color var(--ease),transform var(--ease)}
.side-list a:hover{color:var(--neon);transform:translateX(2px)}
.side-list .idx{font-size:12px;color:var(--neon);font-weight:700;line-height:1.9;flex-shrink:0}
.side-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:8px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--txt-2);
  font-size:13px;transition:all var(--ease);
}
.tag:hover{border-color:rgba(0,229,160,.5);color:var(--neon);background:rgba(0,229,160,.08)}
.side-back{display:flex;flex-direction:column;gap:10px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--txt);
  padding-bottom:3px;border-bottom:2px solid transparent;
  background-image:linear-gradient(90deg,transparent,transparent);
  transition:color var(--ease);
}
.link-arrow i{color:var(--neon);transition:transform var(--ease)}
.link-arrow:hover{color:var(--neon)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0;background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:36px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--neon-dim);border:1px solid rgba(0,229,160,.3);color:var(--neon);
  font-size:12px;font-weight:600;letter-spacing:.06em;margin-bottom:14px;
}
.sec-title{font-size:30px}
.sec-desc{margin-top:12px;color:var(--txt-2);font-size:16px;max-width:640px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card::before{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--neon),rgba(0,229,160,0))}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-up);border-color:var(--line-2)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A1218}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out}
.post-card:hover .thumb img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body h3{
  font-size:18px;line-height:1.5;margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body h3 a:hover{color:var(--neon)}
.card-body p{
  font-size:15px;line-height:1.75;color:var(--txt-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--txt-3);
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;padding:76px 0;
  background-image:radial-gradient(720px 320px at 78% 10%,rgba(0,229,160,.12),transparent 68%),linear-gradient(180deg,rgba(12,20,26,.96),rgba(7,12,15,.98));
  border-top:1px solid var(--line);
}
.cta-inner{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
.cta-inner h2{font-size:30px;line-height:1.35}
.cta-inner p{margin-top:14px;color:var(--txt-2);font-size:16px}
.cta-form{display:flex;gap:0;background:var(--panel);border:1px solid var(--line-2);border-radius:var(--r-btn);padding:6px}
.cta-form input{
  flex:1;min-width:0;height:46px;border:0;background:transparent;color:var(--txt);
  padding:0 14px;font-size:15px;outline:none;border-radius:8px;
}
.cta-form input::placeholder{color:var(--txt-3)}
.cta-form input:focus{box-shadow:0 0 0 3px rgba(0,229,160,.18);background:rgba(0,229,160,.05)}
.form-note{display:none;margin-top:12px;font-size:14px;color:var(--neon)}
.form-note i{margin-right:6px}
.cta-hint{margin-top:10px;font-size:13px;color:var(--txt-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--bg);border-top:1px solid var(--line);padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,160,.65),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--txt-2);max-width:340px}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--txt-2);transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-links a:hover{color:var(--neon);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--txt-2);line-height:1.8}
.footer-contact i{color:var(--neon);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--txt-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:40px}
}
@media (max-width:1024px){
  .nav-main{
    position:fixed;top:73px;left:0;right:0;bottom:0;z-index:70;
    display:flex;flex-direction:column;align-items:stretch;gap:8px;
    padding:24px;background:rgba(7,12,15,.99);
    border-top:1px solid var(--line);
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    overflow-y:auto;
  }
  .nav-main.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-main a{padding:14px 16px;font-size:17px;border-left:3px solid transparent}
  .nav-main a.is-active{
    background:rgba(0,229,160,.08);border-left-color:var(--neon);color:var(--neon);
  }
  .nav-main a.is-active::after{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-actions .btn-ghost{display:none}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:48px 0 56px}
  .article-side{position:static}
  .post-body{max-width:none}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-title{font-size:32px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:48px 0}
  .page-hero{padding:38px 0 34px}
  .page-title{font-size:27px;-webkit-line-clamp:3}
  .card-grid{grid-template-columns:1fr}
  .sec-title{font-size:24px}
  .post-body h2{font-size:22px;margin-top:34px}
  .cta-band{padding:52px 0}
  .cta-inner h2{font-size:23px}
  .related{padding:52px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .logo strong{font-size:15px}
}
@media (max-width:520px){
  .logo-mark{width:34px;height:34px}
  .logo strong{font-size:14px}
  .logo strong span{display:none}
  .nav-actions .btn-sm{padding:0 12px;font-size:13px}
  .cta-form{flex-direction:column;gap:8px;padding:10px}
  .cta-form input{height:44px}
  .cta-form .btn{width:100%}
  .post-meta{gap:10px;font-size:12px}
  .side-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --bg:#070C0F;
  --bg-2:#0C141A;
  --panel:#121E26;
  --card:#0F1A21;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF2F2;
  --muted:#9FB0B8;
  --dim:#6B7C85;
  --cyan:#00E5A0;
  --cyan-soft:rgba(0,229,160,.12);
  --orange:#FF6B2C;
  --amber:#FFC53D;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-input:10px;
  --shadow:0 12px 40px rgba(0,0,0,.45);
  --shadow-hover:0 16px 48px rgba(0,0,0,.55), 0 0 0 1px rgba(0,229,160,.35);
  --container:1240px;
  --t:200ms ease-out;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"SF Mono",ui-monospace,"Roboto Mono",Menlo,Consolas,monospace;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-2);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--t),transform var(--t),background var(--t),border-color var(--t);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.02em;font-weight:700;}
p{margin:0 0 1em;color:var(--muted);}
button{font-family:inherit;cursor:pointer;}
hr{border:0;border-top:1px solid var(--line);margin:0;}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--panel{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);border-radius:2px;}
h2{font-size:30px;margin-bottom:16px;}
h3{font-size:20px;line-height:1.45;}
.lead{font-size:17px;color:var(--muted);max-width:720px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:all var(--t);white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--cyan);color:#04120C;box-shadow:0 8px 24px rgba(0,229,160,.18);}
.btn-primary:hover{background:#1BF2B2;color:#04120C;transform:translateY(-1px);box-shadow:0 10px 30px rgba(0,229,160,.32);}
.btn-primary:active{transform:translateY(0);background:#00CF90;}
.btn-ghost{background:transparent;border-color:rgba(0,229,160,.5);color:var(--cyan);}
.btn-ghost:hover{background:var(--cyan-soft);border-color:var(--cyan);transform:translateY(-1px);}
.btn-ghost:active{background:rgba(0,229,160,.2);}
.btn-plain{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-plain:hover{border-color:var(--cyan);color:var(--cyan);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;box-shadow:none;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;color:var(--text);font-weight:600;
  padding-bottom:2px;background-image:linear-gradient(var(--cyan),var(--cyan));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size var(--t),color var(--t);
}
.link-more:hover{color:var(--cyan);background-size:100% 2px;}

/* ============ 顶栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,15,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(4px);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(0,229,160,0) 0%,rgba(0,229,160,.85) 22%,rgba(0,229,160,.1) 60%,rgba(0,229,160,0) 100%);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:74px;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(0,229,160,.22),rgba(0,229,160,.05));
  border:1px solid rgba(0,229,160,.45);
  color:var(--cyan);font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.04em;
}
.logo strong{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text);white-space:nowrap;}
.logo strong span{color:var(--cyan);margin:0 1px;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main a{
  position:relative;padding:10px 16px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--muted);
}
.nav-main a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-main a.is-active{color:var(--cyan);background:rgba(0,229,160,.08);}
.nav-main a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;
  background:var(--cyan);border-radius:2px;box-shadow:0 0 12px rgba(0,229,160,.9);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:transparent;border:1px solid var(--line-strong);color:var(--text);font-size:16px;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  padding:88px 0 76px;
  background-image:linear-gradient(180deg,rgba(7,12,15,.86),rgba(7,12,15,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 300px at 82% 18%,rgba(0,229,160,.09),transparent 70%);
}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--dim);margin-bottom:22px;font-family:var(--font-num);}
.crumbs a:hover{color:var(--cyan);}
.crumbs span.sep{opacity:.5;}
.page-hero h1{
  font-size:44px;line-height:1.28;max-width:900px;margin-bottom:20px;position:relative;z-index:1;
}
.page-hero h1 em{font-style:normal;color:var(--cyan);}
.page-hero .lead{font-size:18px;max-width:680px;position:relative;z-index:1;color:#B9C8CD;}
.hero-tags{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;position:relative;z-index:1;}
.hero-tag{min-width:130px;}
.hero-tag b{display:block;font-family:var(--font-num);font-size:36px;line-height:1.1;color:var(--cyan);font-weight:700;}
.hero-tag small{display:block;margin-top:6px;font-size:14px;color:var(--dim);}

/* ============ 锚点目录 ============ */
.toc{background:var(--bg);border-bottom:1px solid var(--line);}
.toc-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:22px 0;}
.toc-title{font-size:14px;color:var(--dim);font-family:var(--font-num);letter-spacing:.1em;margin-right:6px;}
.toc a{
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;color:var(--muted);background:var(--card);
}
.toc a:hover{border-color:var(--cyan);color:var(--cyan);background:var(--cyan-soft);}

/* ============ 图文交替 ============ */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center;}
.split + .split{margin-top:96px;}
.split.reverse .split-media{order:-1;}
.split-media{position:relative;}
.split-media img{aspect-ratio:16/10;object-fit:cover;width:100%;box-shadow:var(--shadow);}
.split-media::after{
  content:"";position:absolute;left:-14px;bottom:-14px;width:120px;height:120px;
  border-left:3px solid var(--cyan);border-bottom:3px solid var(--cyan);border-radius:0 0 0 12px;opacity:.55;
}
.split-body h3{font-size:24px;margin-bottom:14px;}
.split-body p{font-size:16.5px;}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{position:relative;padding-left:26px;font-size:16px;color:var(--muted);}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 10px rgba(0,229,160,.7);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  font-size:13px;padding:6px 13px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--muted);background:rgba(255,255,255,.02);
}
.tag--hot{border-color:rgba(255,107,44,.5);color:var(--orange);}
.tag--new{border-color:rgba(255,197,61,.5);color:var(--amber);}

/* ============ 场景卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);transition:all var(--t);
  position:relative;display:flex;flex-direction:column;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(0,229,160,0));
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.card-media{overflow:hidden;}
.card-media img{aspect-ratio:16/9;object-fit:cover;width:100%;border-radius:0;transition:transform 400ms ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;}
.card-body p{font-size:15.5px;margin:0;line-height:1.75;}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--font-num);font-size:13px;color:var(--dim);
}
.badge{font-size:12px;padding:3px 10px;border-radius:6px;background:rgba(0,229,160,.12);color:var(--cyan);}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:1px;
  background:repeating-linear-gradient(180deg,rgba(0,229,160,.55) 0 6px,transparent 6px 12px);
}
.timeline li{position:relative;padding:0 0 34px 0;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-34px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-2);border:2px solid var(--cyan);box-shadow:0 0 12px rgba(0,229,160,.6);
}
.timeline .step-no{font-family:var(--font-num);font-size:13px;color:var(--cyan);letter-spacing:.12em;}
.timeline h3{font-size:19px;margin:6px 0 8px;}
.timeline p{margin:0;font-size:15.8px;}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;color:var(--text);text-align:left;
  padding:22px 46px 22px 18px;font-size:17px;font-weight:600;position:relative;
  transition:color var(--t),background var(--t);
}
.faq-q::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--dim);transition:transform 240ms ease-out,color var(--t);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--cyan);opacity:0;transition:opacity var(--t);
}
.faq-q:hover{color:var(--cyan);background:rgba(255,255,255,.02);}
.faq-item.is-open .faq-q{color:var(--cyan);}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-item.is-open .faq-q::after{transform:translateY(-50%) rotate(180deg);color:var(--cyan);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease-out;}
.faq-a p{padding:0 46px 24px 18px;margin:0;font-size:16px;line-height:1.85;color:var(--muted);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;margin:0 auto;border-radius:18px;
  padding:64px 56px;border:1px solid var(--line);overflow:hidden;
  background-image:linear-gradient(120deg,rgba(7,12,15,.9),rgba(12,20,26,.94)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 240px at 12% 0%,rgba(0,229,160,.12),transparent 70%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center;}
.cta-band h2{font-size:28px;margin-bottom:12px;}
.cta-band p{margin:0;color:#B9C8CD;font-size:16.5px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 220px;min-width:200px;height:50px;padding:0 16px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);
  border-radius:var(--r-input);color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.sub-form input::placeholder{color:var(--dim);}
.sub-form input:focus{outline:none;border-color:var(--cyan);background:rgba(0,229,160,.06);box-shadow:0 0 0 3px rgba(0,229,160,.16);}
.form-note{margin-top:12px;font-size:13px;color:var(--dim);}
.form-msg{margin-top:10px;font-size:14px;display:none;align-items:center;gap:8px;}
.form-msg.ok{display:flex;color:var(--cyan);}
.form-msg.err{display:flex;color:var(--orange);}

/* ============ 交叉入口 ============ */
.cross-links{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cross-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:26px 24px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);transition:all var(--t);
}
.cross-card:hover{border-color:rgba(0,229,160,.45);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.cross-card b{display:block;font-size:18px;margin-bottom:6px;}
.cross-card small{color:var(--dim);font-size:14px;}
.cross-card i{color:var(--cyan);font-size:18px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg);border-top:1px solid var(--line);position:relative;margin-top:96px;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(0,229,160,0),rgba(0,229,160,.7),rgba(0,229,160,0));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:64px 0 40px;}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--muted);line-height:1.9;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:18px;}
.footer-links{display:grid;gap:12px;}
.footer-links a{font-size:14px;color:var(--muted);display:inline-block;}
.footer-links a:hover{color:var(--cyan);transform:translateX(2px);}
.footer-contact{display:grid;gap:12px;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);}
.footer-contact i{color:var(--cyan);font-size:14px;width:16px;text-align:center;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 32px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .page-hero{padding:72px 0 60px;}
  .page-hero h1{font-size:36px;}
  h2{font-size:26px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .split + .split{margin-top:64px;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:48px 34px;}
  .cross-links{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-main{
    position:fixed;top:74px;left:0;right:0;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:8px;
    background:#080F13;border-top:1px solid var(--line);
    padding:24px;overflow-y:auto;margin-left:0;
  }
  .nav-main.is-open{display:flex;}
  .nav-main a{font-size:17px;padding:16px 14px;border-left:3px solid transparent;}
  .nav-main a.is-active{border-left-color:var(--cyan);background:rgba(0,229,160,.08);}
  .nav-main a.is-active::after{display:none;}
  .nav-actions .btn-ghost{display:none;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero h1{font-size:30px;}
  .page-hero .lead{font-size:16.5px;}
  .hero-tags{gap:20px;}
  .hero-tag b{font-size:30px;}
  .card-grid{grid-template-columns:1fr;}
  .split-body h3{font-size:21px;}
  .cta-band{padding:36px 22px;border-radius:14px;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .logo strong{font-size:15px;}
  .page-hero h1{font-size:26px;}
  h2{font-size:22px;}
  .sub-form input,.sub-form .btn{width:100%;}
  .sub-form .btn{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#00E5A0;
  --brand-strong:#1AEEAE;
  --accent:#FF6B2C;
  --amber:#FFC53D;
  --bg:#070C0F;
  --bg-2:#0C141A;
  --panel:#121E26;
  --card:#0F1A21;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#EAF2F2;
  --muted:#9FB0B8;
  --dim:#6B7C85;
  --radius:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 12px 40px rgba(0,0,0,.45);
  --shadow-hover:0 12px 40px rgba(0,0,0,.5),0 0 0 1px rgba(0,229,160,.35);
  --container:1240px;
  --ease:190ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg-2);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
h1,h2,h3{margin:0;font-weight:700;line-height:1.32;letter-spacing:.02em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(0,229,160,.3)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section--panel{background:var(--bg)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:30px}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--brand);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,160,.85),transparent);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:9px;background:var(--brand);
  color:#04140e;font-size:13px;font-weight:800;letter-spacing:.02em;
  display:grid;place-items:center;
}
.logo strong{font-size:17px;font-weight:700;letter-spacing:.02em}
.logo strong span{color:var(--brand);margin:0 2px}
.nav-main{display:flex;align-items:center;gap:6px;margin:0 auto}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  color:var(--muted);font-size:15px;
  transition:color var(--ease),background var(--ease);
}
.nav-main a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-main a.is-active{color:var(--brand);background:rgba(0,229,160,.08)}
.nav-main a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
  box-shadow:0 0 10px rgba(0,229,160,.75);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;
  background:transparent;color:var(--text);
  border:1px solid var(--line-strong);cursor:pointer;
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#04140e}
.btn-primary:hover{background:var(--brand-strong);transform:translateY(-1px);box-shadow:0 8px 24px rgba(0,229,160,.25)}
.btn-ghost{background:transparent;border-color:rgba(0,229,160,.5);color:var(--brand)}
.btn-ghost:hover{background:rgba(0,229,160,.1);transform:translateY(-1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--text);
  font-size:15px;font-weight:600;padding-bottom:4px;
  border-bottom:2px solid rgba(0,229,160,.28);
  transition:border-color var(--ease),color var(--ease);
}
.btn-text:hover{color:var(--brand);border-color:var(--brand)}
.btn:focus-visible,.btn-text:focus-visible,.nav-toggle:focus-visible,.nav-main a:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
.btn[disabled]{opacity:.4;box-shadow:none;pointer-events:none}

/* ---------- 面包屑 ---------- */
.crumb{
  background:var(--bg);
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--dim);
}
.crumb .container{display:flex;align-items:center;gap:10px;height:52px;overflow:hidden;white-space:nowrap}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:var(--dim)}
.crumb .current{color:var(--muted)}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:104px 0 88px;
  background-color:var(--bg);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(7,12,15,.86)}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(680px 340px at 82% 18%,rgba(0,229,160,.14),transparent 70%),
             radial-gradient(520px 300px at 8% 96%,rgba(255,107,44,.10),transparent 72%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{font-size:48px;max-width:900px}
.page-hero .lead{margin-top:20px;max-width:720px;font-size:19px;color:var(--muted);line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

.stat-row{display:flex;flex-wrap:wrap;gap:0;margin-top:56px;border-top:1px solid var(--line)}
.stat-item{flex:1 1 200px;padding:26px 26px 0 0;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:44px;font-weight:700;color:var(--brand);line-height:1.1;letter-spacing:.02em;
}
.stat-num small{font-size:18px;margin-left:4px;color:var(--brand)}
.stat-label{margin-top:8px;font-size:14px;color:var(--dim)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:23px;top:14px;bottom:34px;width:0;
  border-left:1px dashed rgba(0,229,160,.32);
}
.tl-item{position:relative;padding:0 0 44px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--bg-2);
  border:1px solid rgba(0,229,160,.5);
  color:var(--brand);
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-size:16px;font-weight:700;
  box-shadow:0 0 0 6px rgba(0,229,160,.05);
}
.tl-item h3{font-size:20px}
.tl-item p{margin-top:10px;color:var(--muted);font-size:16px;line-height:1.85;max-width:820px}
.tl-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  background:rgba(0,229,160,.1);color:var(--brand);
  border:1px solid rgba(0,229,160,.22);
}
.tag--amber{background:rgba(255,197,61,.12);color:var(--amber);border-color:rgba(255,197,61,.26)}
.tag--orange{background:rgba(255,107,44,.12);color:var(--accent);border-color:rgba(255,107,44,.26)}
.tag--plain{background:rgba(255,255,255,.05);color:var(--muted);border-color:var(--line)}

/* ---------- 卡片 ---------- */
.card{
  height:100%;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 24px 26px;
  position:relative;
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--brand),rgba(0,229,160,0));
  opacity:.7;
}
.card:hover{transform:translateY(-4px);border-color:rgba(0,229,160,.35);box-shadow:var(--shadow-hover)}
.card-icon{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  border:1px solid rgba(0,229,160,.32);color:var(--brand);
  margin-bottom:18px;font-size:17px;
}
.card h3{font-size:19px}
.card p{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.75}

/* ---------- 图文区 ---------- */
.split{display:flex;flex-wrap:wrap;align-items:center;gap:56px}
.split-media{flex:1 1 380px}
.split-body{flex:1 1 460px}
.split-media img{border-radius:var(--radius);border:1px solid var(--line);width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.split-body h2{font-size:30px}
.split-body p{margin-top:16px;color:var(--muted);font-size:16px}
.mini-list{margin-top:24px;display:grid;gap:12px}
.mini-list li{display:flex;gap:12px;align-items:flex-start;color:var(--muted);font-size:15px}
.mini-list i{color:var(--brand);margin-top:5px;font-size:13px}

/* ---------- 自查清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;border-top:1px solid var(--line)}
.check-item{
  display:flex;gap:16px;padding:24px 0;border-bottom:1px solid var(--line);
}
.check-item .idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:13px;font-weight:700;
  background:rgba(255,107,44,.12);color:var(--accent);border:1px solid rgba(255,107,44,.24);
}
.check-item h3{font-size:17px;font-weight:600}
.check-item p{margin-top:8px;color:var(--muted);font-size:15px;line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;gap:14px;
  padding:22px 0 22px 0;
  font-size:17px;font-weight:600;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--dim);margin-left:auto;padding-left:16px;transition:transform var(--ease),color var(--ease);
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--brand)}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::before{
  content:"";position:absolute;left:-16px;top:24px;bottom:24px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity var(--ease);
}
.faq-item[open] summary::before{opacity:1}
.faq-answer{padding:0 0 24px 0;color:var(--muted);font-size:16px;line-height:1.85;max-width:860px}

/* ---------- 提示面板 ---------- */
.tips-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:34px 32px;
  display:grid;gap:22px;
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.tip{display:flex;gap:14px;align-items:flex-start}
.tip i{color:var(--brand);font-size:18px;margin-top:4px}
.tip h3{font-size:16px;font-weight:600}
.tip p{margin-top:6px;color:var(--muted);font-size:14px;line-height:1.75}

/* ---------- 相关入口 ---------- */
.entry-bar{
  background:var(--bg);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
}
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.entry{
  display:block;padding:26px 24px;border-radius:var(--radius);
  background:var(--card);border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.entry:hover{border-color:rgba(0,229,160,.4);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.entry .k{font-size:13px;color:var(--brand);letter-spacing:.1em}
.entry h3{margin-top:10px;font-size:18px}
.entry p{margin-top:10px;color:var(--muted);font-size:14px;line-height:1.75}
.entry .go{margin-top:16px;display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:600}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background-color:var(--bg);
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);
  padding:88px 0;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(7,12,15,.88)}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(560px 280px at 20% 10%,rgba(0,229,160,.13),transparent 70%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:760px}
.cta-inner h2{font-size:30px}
.cta-inner p{margin-top:14px;color:var(--muted);font-size:16px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.cta-form input{
  flex:1 1 280px;height:52px;padding:0 18px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  color:var(--text);transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.cta-form input::placeholder{color:var(--dim)}
.cta-form input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(0,229,160,.18);
  background:rgba(0,229,160,.05);
}
.cta-note{margin-top:14px;font-size:13px;color:var(--dim)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);position:relative;padding:72px 0 34px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,160,.7),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
.footer-brand p{margin-top:18px;color:var(--muted);font-size:14px;line-height:1.9;max-width:340px}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:var(--muted);font-size:14px;transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-links a:hover{color:var(--brand);transform:translateX(2px)}
.footer-contact{display:grid;gap:12px}
.footer-contact li{display:flex;gap:10px;color:var(--muted);font-size:14px}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--dim);
}

/* ---------- 工具类 ---------- */
.grid-y-gap > .cell{margin-bottom:30px}
.mb-0{margin-bottom:0}
.text-mono{font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:13px;color:var(--dim)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .page-hero h1{font-size:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .section-head{margin-bottom:36px}
  .page-hero{padding:72px 0 64px}
  .page-hero h1{font-size:36px}
  .page-hero .lead{font-size:17px}
  .stat-num{font-size:38px}
  .split{gap:32px}
  .split-media,.split-body{flex:1 1 100%}
  .split-body h2{font-size:26px}
  .section-head h2,.cta-inner h2{font-size:26px}
  .tips-panel{grid-template-columns:1fr;gap:20px}
  .entry-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .nav-toggle{display:inline-flex}
  .nav-main{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:stretch;gap:20px;
    margin:0;padding:28px 24px;
    background:var(--bg);border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  }
  .nav-main.is-open{opacity:1;visibility:visible;transform:none}
  .nav-main a{padding:16px 18px;font-size:17px;border-radius:12px}
  .nav-main a.is-active::after{
    left:0;right:auto;top:16px;bottom:16px;width:3px;height:auto;
    border-radius:0 3px 3px 0;
  }
  .nav-actions .btn-ghost{display:none}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero{padding:56px 0 48px}
  .page-hero h1{font-size:30px}
  .stat-item{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);padding:20px 0}
  .stat-item:last-child{border-bottom:0}
  .stat-num{font-size:34px}
  .tl-item{padding-left:60px}
  .tl-num{width:40px;height:40px;font-size:14px}
  .timeline::before{left:19px}
  .card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-inner h2{font-size:22px}
  .cta-band{padding:64px 0}
  .entry-grid{gap:16px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .logo strong{font-size:15px}
  .hero-actions .btn{width:100%}
  .page-hero h1{font-size:26px}
  .section-head h2,.split-body h2{font-size:22px}
  .tl-item{padding-left:52px;padding-bottom:34px}
  .tl-num{width:36px;height:36px;font-size:13px}
  .timeline::before{left:17px}
  .tl-item h3{font-size:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --neon:#00E5A0;
  --neon-soft:rgba(0,229,160,.12);
  --neon-line:rgba(0,229,160,.35);
  --orange:#FF6B2C;
  --amber:#FFC53D;
  --bg:#070C0F;
  --bg-2:#0C141A;
  --panel:#121E26;
  --card:#0F1A21;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --txt:#EAF2F2;
  --muted:#9FB0B8;
  --dim:#6B7C85;
  --radius:14px;
  --radius-sm:10px;
  --radius-img:12px;
  --shadow:0 12px 40px rgba(0,0,0,.45);
  --container:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-2);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
h1,h2,h3,h4,p,ul,ol,figure,form{margin:0;padding:0}
ul,ol{list-style:none}
a{color:var(--neon);text-decoration:none;transition:color .2s var(--ease)}
button,input{font-family:inherit;font-size:inherit}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.grid-x{margin-bottom:0}
.cell{min-width:0}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(7,12,15,.95);border-bottom:1px solid var(--line)}
.site-header::before{content:"";display:block;height:2px;background:linear-gradient(90deg,transparent,rgba(0,229,160,.65),rgba(0,229,160,.15),transparent)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--txt)}
.logo:hover{color:var(--txt)}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;background:linear-gradient(140deg,var(--neon),#12b487);
  color:#052018;font-weight:700;font-size:14px;letter-spacing:.02em;font-family:var(--mono);
  box-shadow:0 0 0 1px rgba(0,229,160,.35),0 6px 18px rgba(0,229,160,.22);
}
.logo strong{font-size:17px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.logo strong span{color:var(--neon);margin:0 1px}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{position:relative;padding:10px 14px;border-radius:8px;color:var(--muted);font-size:15px;font-weight:500;letter-spacing:.02em}
.nav-main a:hover{color:var(--txt);background:rgba(255,255,255,.045)}
.nav-main a.is-active{color:var(--neon);background:var(--neon-soft)}
.nav-main a.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(0,229,160,.85)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line-strong);background:transparent;color:var(--txt);cursor:pointer}
.nav-toggle:hover{border-color:var(--neon-line);color:var(--neon)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--neon);color:#062118;box-shadow:0 6px 20px rgba(0,229,160,.16)}
.btn-primary:hover{background:#26f0b4;color:#062118;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(0,229,160,.38),0 12px 30px rgba(0,229,160,.26)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--neon-line);color:var(--neon)}
.btn-ghost:hover{background:var(--neon-soft);color:var(--neon);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
button:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;box-shadow:none;transform:none}
.link-more{position:relative;color:var(--txt);font-size:14px;font-weight:600;padding-bottom:2px}
.link-more::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--neon);transition:width .22s var(--ease)}
.link-more:hover{color:var(--neon)}
.link-more:hover::after{width:100%}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;padding:88px 0 76px;background:var(--bg);border-bottom:1px solid var(--line)}
.page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.4}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;opacity:.6;
}
.page-hero::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(900px 420px at 78% 20%,rgba(0,229,160,.14),transparent 62%),linear-gradient(180deg,rgba(7,12,15,.86),rgba(12,20,26,.96))}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--dim);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--neon)}
.crumbs .current{color:var(--neon)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--neon)}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--neon);box-shadow:0 0 8px rgba(0,229,160,.8)}
.page-hero h1{font-size:48px;line-height:1.28;letter-spacing:.02em;font-weight:700;margin:16px 0 14px;max-width:900px}
.hero-sub{max-width:660px;font-size:19px;line-height:1.75;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:48px;margin-top:44px}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-family:var(--mono);font-size:36px;line-height:1.1;color:var(--neon);letter-spacing:-.02em}
.hero-stats span{font-size:13px;color:var(--muted);margin-top:6px}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg)}
.section-panel{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:48px}
.section-head h2{font-size:30px;line-height:1.32;letter-spacing:.02em;font-weight:700;margin:14px 0 12px}
.section-head p{color:var(--muted);font-size:17px;line-height:1.85}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}

/* ============ 卡片图墙 ============ */
.wall>.cell{margin-bottom:24px}
.wall-card{
  height:100%;display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.wall-card:hover{transform:translateY(-4px);border-color:var(--neon-line);box-shadow:0 0 0 1px rgba(0,229,160,.22),0 18px 46px rgba(0,0,0,.55)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0a1216}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease)}
.wall-card:hover .card-media img{transform:scale(1.03)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,15,0) 42%,rgba(7,12,15,.72))}
.card-body{display:flex;flex-direction:column;gap:12px;padding:22px 22px 20px;flex:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--neon);background:var(--neon-soft);border:1px solid rgba(0,229,160,.28);
}
.badge.orange{color:var(--orange);background:rgba(255,107,44,.12);border-color:rgba(255,107,44,.32)}
.badge.amber{color:var(--amber);background:rgba(255,197,61,.12);border-color:rgba(255,197,61,.32)}
.card-body h3{font-size:20px;line-height:1.45;font-weight:600;letter-spacing:.02em}
.card-body p{font-size:15px;line-height:1.78;color:var(--muted)}
.card-foot{margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--dim);font-family:var(--mono)}
.card-foot i{color:var(--neon);margin-right:6px}

/* ============ 数据条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-item{padding:34px 26px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-item strong{display:block;font-family:var(--mono);font-size:50px;line-height:1.05;letter-spacing:-.03em;color:var(--neon)}
.stat-item span{display:block;margin-top:8px;font-size:14px;color:var(--muted)}
.stat-item em{display:block;margin-top:4px;font-style:normal;font-size:13px;color:var(--dim)}

/* ============ 场景卡 ============ */
.scene-card{height:100%;padding:30px 26px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);transition:border-color .2s var(--ease),transform .2s var(--ease)}
.scene-card:hover{border-color:var(--neon-line);transform:translateY(-3px)}
.scene-icon{width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:var(--neon-soft);border:1px solid rgba(0,229,160,.28);color:var(--neon);font-size:18px;margin-bottom:18px}
.scene-icon.orange{color:var(--orange);background:rgba(255,107,44,.1);border-color:rgba(255,107,44,.3)}
.scene-card h3{font-size:19px;font-weight:600;letter-spacing:.02em;margin-bottom:10px}
.scene-card p{font-size:15px;line-height:1.8;color:var(--muted)}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:30px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:8px;top:10px;bottom:16px;border-left:1px dashed rgba(0,229,160,.34)}
.timeline li{position:relative;padding-bottom:30px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-27px;top:11px;width:10px;height:10px;border-radius:50%;background:var(--neon);box-shadow:0 0 0 4px rgba(0,229,160,.12)}
.timeline .step-no{font-family:var(--mono);font-size:13px;color:var(--neon);letter-spacing:.08em}
.timeline h3{font-size:19px;font-weight:600;margin:4px 0 8px;letter-spacing:.02em}
.timeline p{font-size:15px;line-height:1.8;color:var(--muted)}
.side-figure{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.side-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.side-figure figcaption{padding:18px 20px;font-size:14px;line-height:1.75;color:var(--muted)}
.side-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.side-list li{display:flex;gap:10px;font-size:15px;color:var(--muted)}
.side-list i{color:var(--neon);margin-top:7px;font-size:12px}

/* ============ 对比 + FAQ ============ */
.compare>.cell{margin-bottom:24px}
.compare-col{height:100%;padding:28px 26px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line)}
.compare-col.is-good{background:linear-gradient(180deg,rgba(0,229,160,.06),rgba(15,26,33,1));border-color:rgba(0,229,160,.28)}
.compare-col h3{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:600;letter-spacing:.02em;margin-bottom:16px}
.compare-col h3 i{font-size:16px;color:var(--dim)}
.compare-col.is-good h3 i{color:var(--neon)}
.compare-col li{position:relative;padding:9px 0 9px 20px;font-size:15px;line-height:1.8;color:var(--muted);border-bottom:1px dashed var(--line)}
.compare-col li:last-child{border-bottom:0}
.compare-col li::before{content:"";position:absolute;left:0;top:20px;width:6px;height:6px;border-radius:2px;background:var(--dim)}
.compare-col.is-good li::before{background:var(--neon);box-shadow:0 0 8px rgba(0,229,160,.7)}
.faq{margin-top:48px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);padding-left:0;transition:border-color .24s var(--ease)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:600;letter-spacing:.02em;color:var(--txt);
  cursor:pointer;list-style:none;border-left:3px solid transparent;padding-left:16px;
  transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--neon)}
.faq-item summary i{color:var(--dim);font-size:14px;transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item[open] summary{color:var(--neon);border-left-color:var(--neon);background:rgba(0,229,160,.04)}
.faq-item[open] summary i{transform:rotate(45deg);color:var(--neon)}
.faq-answer{padding:0 4px 24px 16px;font-size:16px;line-height:1.85;color:var(--muted)}

/* ============ CTA ============ */
.cta-panel{position:relative;overflow:hidden;border-radius:18px;border:1px solid var(--line);background:var(--panel);padding:56px 48px;box-shadow:var(--shadow)}
.cta-panel-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:.28}
.cta-panel::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 20%,rgba(0,229,160,.16),transparent 62%),linear-gradient(180deg,rgba(12,20,26,.82),rgba(7,12,15,.94))}
.cta-inner{position:relative;z-index:2;max-width:720px}
.cta-panel h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.02em;margin:14px 0 12px}
.cta-panel p{color:var(--muted);font-size:17px}
.cta-form{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 320px;height:50px;padding:0 16px;border-radius:var(--radius-sm);
  background:rgba(7,12,15,.72);border:1px solid var(--line-strong);color:var(--txt);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form input::placeholder{color:var(--dim)}
.cta-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(0,229,160,.16)}
.form-msg{margin-top:14px;font-size:14px;color:var(--neon);min-height:22px}
.form-msg.is-error{color:var(--orange)}
.form-msg i{margin-right:6px}

/* ============ 入口条 ============ */
.entry-card{
  display:flex;flex-direction:column;justify-content:space-between;height:100%;
  padding:26px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.entry-card:hover{border-color:var(--neon-line);transform:translateY(-3px);background:#111d24}
.entry-card .entry-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.entry-card .entry-top i{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:var(--neon-soft);border:1px solid rgba(0,229,160,.26);color:var(--neon)}
.entry-card h3{font-size:18px;font-weight:600;letter-spacing:.02em}
.entry-card p{font-size:14px;line-height:1.78;color:var(--muted)}
.entry-card .entry-go{margin-top:18px;font-size:14px;font-weight:600;color:var(--neon);display:inline-flex;align-items:center;gap:8px}
.entry-card .entry-go i{transition:transform .2s var(--ease)}
.entry-card:hover .entry-go i{transform:translateX(4px)}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg);border-top:1px solid var(--line);position:relative;padding:64px 0 28px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(0,229,160,.55),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:var(--muted);max-width:340px}
.footer-title{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--txt);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:var(--neon);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted)}
.footer-contact i{color:var(--neon);margin-top:6px;font-size:13px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--dim);line-height:1.9}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .page-hero h1{font-size:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  body{font-size:16px}
  .nav-main{
    position:fixed;left:0;right:0;top:65px;bottom:0;
    flex-direction:column;align-items:stretch;gap:20px;
    padding:28px 24px;background:rgba(7,12,15,.99);
    border-top:1px solid var(--line);
    transform:translateX(100%);transition:transform .22s var(--ease);
    overflow-y:auto;
  }
  .nav-main.is-open{transform:translateX(0)}
  .nav-main a{font-size:17px;padding:12px 16px;border-left:3px solid transparent;border-radius:0}
  .nav-main a.is-active{background:rgba(0,229,160,.08);border-left-color:var(--neon)}
  .nav-main a.is-active::after{display:none}
  .nav-main a:hover{background:rgba(255,255,255,.04)}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  .page-hero{padding:64px 0 56px}
  .page-hero h1{font-size:36px}
  .hero-sub{font-size:17px}
  .section-head h2{font-size:26px}
  .cta-panel{padding:44px 32px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2n){border-right:0}
  .stat-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .stat-item strong{font-size:44px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .page-hero{padding:48px 0 44px}
  .page-hero h1{font-size:28px;line-height:1.4}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{gap:28px;margin-top:32px}
  .hero-stats strong{font-size:28px}
  .cta-panel{padding:34px 22px;border-radius:14px}
  .cta-panel h2{font-size:22px}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .compare-col{padding:22px 20px}
  .scene-card{padding:24px 20px}
  .card-body{padding:18px 18px 16px}
  .stat-item{padding:24px 18px}
  .stat-item strong{font-size:36px}
  .faq-item summary{font-size:16px;padding:18px 4px 18px 14px}
}
@media (max-width:519px){
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .logo strong{font-size:15px}
  .logo-mark{width:32px;height:32px;flex:0 0 32px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}