/* roulang page: index */
:root{
  --bg:#08090C;
  --bg-2:#0E1016;
  --card:#14171F;
  --card-hi:#1A1E28;
  --main:#35F0C0;
  --amber:#FFB03A;
  --purple:#6E56FF;
  --text:#EDEFF5;
  --text-2:#A6ACBB;
  --text-3:#6B7280;
  --line:rgba(255,255,255,.08);
  --line-main:rgba(53,240,192,.35);
  --danger:#FF5C6C;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  --font-num:Oswald,"Barlow Condensed","Noto Sans SC",sans-serif;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--text);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--main);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.25;}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding-left:1.15em;}
li{margin-bottom:8px;}
::selection{background:rgba(53,240,192,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0A0B0F;}
::-webkit-scrollbar-thumb{background:#242938;border-radius:999px;border:2px solid #0A0B0F;}
::-webkit-scrollbar-thumb:hover{background:#33outputs;}
::-webkit-scrollbar-thumb:hover{background:#33405a;}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
@media(min-width:1441px){:root{--wrap:1320px;}}
.section{padding:104px 0;position:relative;}
.section--alt{background:var(--bg-2);}
@media(max-width:1024px){.section{padding:80px 0;}}
@media(max-width:840px){.section{padding:72px 0;}}
@media(max-width:560px){.section{padding:52px 0;}.container{padding:0 16px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,9,12,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,240,192,.55),rgba(110,86,255,.35),transparent);
}
.nav{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:800;color:var(--text);white-space:nowrap;}
.logo:hover{color:var(--text);}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 30px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,rgba(53,240,192,.22),rgba(110,86,255,.22));
  border:1px solid var(--line-main);
  box-shadow:0 0 16px rgba(53,240,192,.16);
}
.logo-mark i{font-size:13px;color:var(--main);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:block;padding:9px 14px;border-radius:8px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:2px;background:var(--main);
  transition:height var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a.active{color:var(--main);}
.nav-links a.active::before{height:18px;box-shadow:0 0 10px rgba(53,240,192,.5);}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--main);box-shadow:0 0 10px rgba(53,240,192,.65);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;background:transparent;
  border:1px solid var(--line);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color var(--dur) var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--dur) var(--ease),opacity 160ms linear;}
.nav-toggle:hover{border-color:var(--line-main);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ buttons ============ */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;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 var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn i{font-size:13px;}
.btn-amber{background:var(--amber);color:#16130a;border-color:var(--amber);}
.btn-amber::after{
  content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);
  transform:skewX(-18deg);transition:left 240ms var(--ease);
}
.btn-amber:hover{filter:brightness(1.06);color:#16130a;transform:translateY(-1px);}
.btn-amber:hover::after{left:140%;}
.btn-amber:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--line-main);color:var(--main);}
.btn-ghost:hover{background:rgba(53,240,192,.08);color:var(--main);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--main);font-size:14px;font-weight:600;
}
.btn-link i{transition:transform var(--dur) var(--ease);font-size:12px;}
.btn-link:hover i{transform:translateX(4px);}

/* ============ section head ============ */
.sec-head{display:flex;align-items:center;gap:16px;margin-bottom:38px;}
.sec-num{
  font-family:var(--font-num);font-size:19px;font-weight:600;letter-spacing:.08em;
  color:var(--main);text-shadow:0 0 14px rgba(53,240,192,.35);flex:0 0 auto;
}
.sec-head h2{font-size:clamp(23px,3vw,36px);white-space:nowrap;}
.sec-line{flex:1 1 auto;height:1px;min-width:40px;background:linear-gradient(90deg,rgba(53,240,192,.4),rgba(53,240,192,0));}
.sec-head .sec-side{flex:0 0 auto;}
.sec-lead{color:var(--text-2);font-size:15px;max-width:720px;margin:-18px 0 36px;}
@media(max-width:840px){
  .sec-head{flex-wrap:wrap;gap:10px 12px;margin-bottom:26px;}
  .sec-head h2{white-space:normal;font-size:22px;}
  .sec-line{order:5;flex-basis:100%;}
}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:118px 0 104px;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;pointer-events:none;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,9,12,.80) 0%,rgba(8,9,12,.88) 55%,rgba(8,9,12,.94) 100%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.9;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:58px 58px;
}
.hero-inner{position:relative;z-index:2;max-width:840px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;font-size:13px;color:var(--text-2);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.pill i{font-size:11px;color:var(--main);}
.pill:hover{border-color:var(--line-main);color:var(--text);}
.hero h1{
  font-size:clamp(32px,6vw,72px);font-weight:800;letter-spacing:-.02em;line-height:1.08;
  margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--main);text-shadow:0 0 26px rgba(53,240,192,.28);}
.hero-sub{font-size:clamp(16px,1.5vw,19px);color:var(--text-2);max-width:620px;margin-bottom:36px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media(max-width:840px){
  .hero{padding:76px 0 68px;}
  .hero-sub{margin-bottom:28px;}
}
@media(max-width:560px){
  .hero{padding:56px 0 52px;}
  .hero-actions .btn{width:100%;}
}

/* ============ check band ============ */
.check-band{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
}
.check-item{padding:34px 30px;border-left:1px solid var(--line);transition:background var(--dur) var(--ease);}
.check-item:first-child{border-left:0;}
.check-item:hover{background:var(--card-hi);}
.check-idx{
  display:inline-block;font-family:var(--font-num);font-size:14px;letter-spacing:.1em;
  color:var(--main);margin-bottom:14px;
}
.check-item h3{font-size:19px;margin-bottom:10px;}
.check-item p{color:var(--text-2);font-size:15px;margin:0;line-height:1.85;}
@media(max-width:960px){
  .check-band{grid-template-columns:1fr;}
  .check-item{border-left:0;border-top:1px solid var(--line);}
  .check-item:first-child{border-top:0;}
  .check-item{padding:26px 22px;}
}

/* ============ catalog ============ */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.cat-card{
  position:relative;display:flex;flex-direction:column;gap:16px;
  padding:30px 28px 26px 34px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.cat-card::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:46%;border-radius:2px;background:var(--main);
  box-shadow:0 0 14px rgba(53,240,192,.4);
  transition:height var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.cat-card:hover{
  transform:translateY(-2px);color:var(--text);
  border-color:var(--line-main);background:var(--card-hi);
  box-shadow:0 0 24px rgba(53,240,192,.12);
}
.cat-card:hover::before{height:86%;}
.cat-num{font-family:var(--font-num);font-size:15px;letter-spacing:.12em;color:var(--main);}
.cat-card h3{font-size:20px;transition:color var(--dur) var(--ease);}
.cat-card p{color:var(--text-2);font-size:15px;margin:0;line-height:1.85;}
.cat-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:2px;}
.badge{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:6px;
  font-size:12.5px;color:var(--amber);background:rgba(255,176,58,.09);
  border:1px solid rgba(255,176,58,.28);
}
.cat-arrow{
  width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);font-size:12px;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.cat-card:hover .cat-arrow{transform:translateX(4px);color:var(--main);border-color:var(--line-main);}
@media(max-width:840px){.cat-grid{grid-template-columns:1fr;gap:16px;}}

/* ============ featured ============ */
.feat-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.feat-main{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.feat-main:hover{transform:translateY(-2px);border-color:var(--line-main);box-shadow:0 0 24px rgba(53,240,192,.12);color:var(--text);}
.feat-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#191d27,#101319);}
.feat-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--dur) var(--ease);}
.feat-main:hover .feat-cover img{transform:scale(1.04);}
.feat-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,9,12,.15),rgba(8,9,12,.75));
}
.feat-body{padding:26px 28px 28px;}
.feat-body h3{font-size:22px;margin:14px 0 12px;line-height:1.35;}
.feat-body p{color:var(--text-2);font-size:15px;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;color:var(--purple);background:rgba(110,86,255,.1);
  border:1px solid rgba(110,86,255,.32);
}
.chip-main{color:var(--main);background:rgba(53,240,192,.08);border-color:var(--line-main);}
.feat-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:13.5px;color:var(--text-3);}
.time{font-family:var(--font-num);letter-spacing:.05em;color:var(--amber);}
.feat-side{display:flex;flex-direction:column;gap:20px;}
.feat-mini{
  position:relative;display:block;padding:24px 26px 24px 30px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.feat-mini::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;border-radius:2px;
  background:var(--purple);opacity:.75;transition:opacity var(--dur) var(--ease),background var(--dur) var(--ease);
}
.feat-mini:hover{transform:translateY(-2px);border-color:var(--line-main);background:var(--card-hi);color:var(--text);}
.feat-mini:hover::before{background:var(--main);opacity:1;box-shadow:0 0 12px rgba(53,240,192,.4);}
.feat-mini h3{font-size:18px;margin-bottom:12px;line-height:1.45;}
.feat-mini .time{font-size:13px;}
@media(max-width:960px){
  .feat-grid{grid-template-columns:1fr;}
}

/* ============ steps timeline ============ */
.steps{position:relative;display:grid;gap:0;}
.step{
  position:relative;display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:26px 0;border-top:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.step:first-child{border-top:0;}
.step-idx{
  font-family:var(--font-num);font-size:30px;font-weight:600;letter-spacing:.04em;
  color:var(--main);opacity:.9;line-height:1;padding-top:4px;
  text-shadow:0 0 18px rgba(53,240,192,.28);
}
.step h3{font-size:19px;margin-bottom:8px;}
.step p{color:var(--text-2);font-size:15px;margin:0;max-width:760px;}
.step:hover{background:linear-gradient(90deg,rgba(53,240,192,.04),transparent 60%);}
@media(max-width:840px){
  .step{grid-template-columns:1fr;gap:8px;padding:22px 0;}
  .step-idx{font-size:22px;}
}

/* ============ CMS list ============ */
.tl{display:flex;flex-direction:column;}
.tl-row{
  position:relative;display:grid;grid-template-columns:96px 1fr auto;align-items:center;gap:22px;
  min-height:64px;padding:18px 18px 18px 20px;border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.tl-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--main);opacity:0;transition:opacity var(--dur) var(--ease);
}
.tl-row:hover{background:var(--card);color:var(--text);}
.tl-row:hover::before{opacity:1;box-shadow:0 0 12px rgba(53,240,192,.45);}
.tl-time{font-family:var(--font-num);font-size:14px;letter-spacing:.06em;color:var(--amber);}
.tl-main h3{font-size:17px;font-weight:600;margin-bottom:6px;transition:color var(--dur) var(--ease);}
.tl-row:hover .tl-main h3{color:var(--main);}
.tl-main p{
  color:var(--text-2);font-size:14.5px;margin:0;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.tl-side{display:flex;align-items:center;gap:14px;}
.tl-side i{color:var(--text-3);font-size:12px;transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);}
.tl-row:hover .tl-side i{transform:translateX(4px);color:var(--main);}
@media(max-width:840px){
  .tl-row{grid-template-columns:1fr;gap:8px;padding:18px 14px 18px 16px;}
  .tl-side{justify-content:flex-start;}
}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:64px 24px;text-align:center;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:26px;color:var(--main);opacity:.8;}
.empty-state p{color:var(--text-2);margin:0;font-size:15px;}

/* ============ rail ============ */
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:30px;}
.rail-ctrl{display:flex;gap:10px;}
.rail-btn{
  width:40px;height:40px;border-radius:50%;background:transparent;border:1px solid var(--line);
  color:var(--text-2);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.rail-btn:hover{border-color:var(--line-main);color:var(--main);background:rgba(53,240,192,.06);}
.rail{display:flex;gap:20px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory;scrollbar-width:thin;}
.rail-card{
  flex:0 0 calc((100% - 60px)/4);min-width:228px;scroll-snap-align:start;
  display:flex;flex-direction:column;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 14px 18px;overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.rail-card:hover{transform:translateY(-2px);border-color:var(--line-main);box-shadow:0 0 24px rgba(53,240,192,.12);color:var(--text);}
.rail-thumb{aspect-ratio:16/9;overflow:hidden;border-radius:10px;background:linear-gradient(135deg,#191d27,#101319);}
.rail-thumb img{width:100%;height:100%;object-fit:cover;border-radius:10px;transition:transform var(--dur) var(--ease);}
.rail-card:hover .rail-thumb img{transform:scale(1.04);}
.rail-card h3{font-size:16px;line-height:1.5;}
.rail-card .time{font-size:12.5px;}
@media(max-width:1200px){.rail-card{flex:0 0 calc((100% - 40px)/3);}}
@media(max-width:840px){.rail-card{flex:0 0 76%;}.rail-ctrl{display:none;}}

/* ============ faq ============ */
.faq{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:17px;font-weight:600;line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--main);}
.faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--main);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.faq-icon::before{left:50%;top:3px;width:2px;height:12px;transform:translateX(-50%);}
.faq-icon::after{top:50%;left:3px;height:2px;width:12px;transform:translateY(-50%);}
.faq-item.open .faq-icon::before{transform:translateX(-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);}
.faq-a p{color:var(--text-2);font-size:15px;line-height:1.85;margin:0;padding:0 0 24px;max-width:760px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line-main);border-bottom:1px solid var(--line);
  background:var(--bg-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{
  position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:40px;padding:64px 0;
}
.cta-left h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-left p{color:var(--text-2);font-size:15px;margin:0;max-width:520px;}
.cta-right{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}
.cta-links{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;
  padding:22px 0 28px;border-top:1px solid var(--line);
}
.cta-links a{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px;}
.cta-links a i{font-size:11px;color:var(--main);}
@media(max-width:960px){
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px;padding:52px 0;}
  .cta-right{width:100%;}
  .cta-right .btn{flex:1 1 auto;}
}

/* ============ footer ============ */
.site-footer{background:#07080B;border-top:1px solid var(--line);padding-top:70px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.footer-brand .logo{margin-bottom:16px;font-size:16px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.85;margin:0;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text);letter-spacing:.02em;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{color:var(--text-2);font-size:14px;display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);}
.footer-col a:hover{color:var(--main);transform:translateX(2px);}
.footer-col p{color:var(--text-2);font-size:14px;margin:0 0 12px;line-height:1.8;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--main);}
@media(max-width:960px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media(max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

@media(max-width:900px){
  .nav-toggle{display:flex;}
  .nav-links{
    display:none;position:fixed;top:56px;left:0;right:0;z-index:70;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 16px 22px;
    background:rgba(14,16,22,.98);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(0,0,0,.5);
  }
  .nav-links a{padding:13px 14px;font-size:15.5px;border-radius:10px;}
  .nav-links a::before{left:2px;}
  .nav-links a.active{background:rgba(53,240,192,.07);}
  .nav-links a.active::after{display:none;}
  .nav{height:56px;}
  .logo{font-size:15.5px;}
  .logo-mark{width:26px;height:26px;flex:0 0 26px;}
  .logo-mark i{font-size:11px;}
  .nav-right .btn-amber{height:38px;padding:0 14px;font-size:13.5px;}
  .nav-toggle{width:40px;height:40px;}
}
@media(max-width:520px){
  .nav-right .btn-amber{display:none;}
}

/* roulang page: article */
:root{
  --bg:#08090C;
  --bg-2:#0E1016;
  --card:#14171F;
  --card-hover:#1A1E28;
  --primary:#35F0C0;
  --amber:#FFB03A;
  --violet:#6E56FF;
  --text:#EDEFF5;
  --text-2:#A6ACBB;
  --text-3:#6B7280;
  --line:rgba(255,255,255,.08);
  --line-hi:rgba(53,240,192,.35);
  --r-card:16px;
  --r-btn:10px;
  --r-chip:999px;
  --r-img:14px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --glow:0 0 24px rgba(53,240,192,.12);
  --font-cn:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Oswald","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.35;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(53,240,192,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0C11}
::-webkit-scrollbar-thumb{background:#23272F;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#2F3540}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(8,9,12,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,240,192,.55) 18%,rgba(110,86,255,.35) 58%,transparent);
  pointer-events:none;
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--text);
  white-space:nowrap;
}
.logo-mark{
  display:grid;
  place-items:center;
  width:32px;
  height:32px;
  border-radius:9px;
  border:1px solid var(--line-hi);
  background:rgba(53,240,192,.08);
  color:var(--primary);
  font-size:13px;
  transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.logo:hover .logo-mark{background:rgba(53,240,192,.16);box-shadow:var(--glow)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  padding:10px 12px;
  font-size:15px;
  color:var(--text-2);
  transition:color var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:16px;
  border-radius:2px;
  background:var(--primary);
}
.nav-links a.active::after{
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(53,240,192,.65);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  padding:0 11px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:transparent;
  transition:border-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--line-hi)}
.nav-toggle span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--text-2);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-toggle.open span{background:var(--primary)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  position:relative;
  overflow:hidden;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn::after{
  content:"";
  position:absolute;
  top:0;left:-60%;
  width:40%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);
  transform:skewX(-18deg);
  transition:left 240ms var(--ease);
}
.btn:hover::after{left:120%}
.btn-amber{background:var(--amber);color:#171202}
.btn-amber:hover{filter:brightness(1.06);box-shadow:0 10px 28px rgba(255,176,58,.22)}
.btn-ghost{
  background:transparent;
  border-color:var(--line-hi);
  color:var(--primary);
}
.btn-ghost:hover{background:rgba(53,240,192,.08);box-shadow:var(--glow)}
.btn:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:36px 0 40px;
  background:linear-gradient(180deg,#0E1016 0%,#08090C 100%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  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:64px 64px;
  pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent);
}
.article-hero .container{position:relative;z-index:1}
.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 var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{
  max-width:360px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--text-3);
}
.article-title{
  font-size:clamp(28px,3.6vw,42px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.25;
  max-width:920px;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13px;
  color:var(--text-3);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#2C313C}
.meta-time{color:var(--amber);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:var(--r-chip);
  font-size:12.5px;
  line-height:1.5;
  color:var(--text-2);
  background:rgba(255,255,255,.02);
}
.chip-cat{
  border-color:rgba(110,86,255,.45);
  background:rgba(110,86,255,.10);
  color:#BFB4FF;
}

/* ============ 文章主体 ============ */
.article-main{padding:56px 0 88px}
.article-wrap{max-width:760px;margin:0 auto}
.article-cover{
  margin:0 0 40px;
  border:1px solid var(--line);
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,#14171F,#0E1016);
}
.article-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform var(--dur) var(--ease);
}
.article-cover:hover img{transform:scale(1.04)}

.cms-article-body{
  font-size:16.5px;
  line-height:1.95;
  color:#D8DCE7;
  overflow-wrap:break-word;
}
.cms-article-body p{margin:0 0 22px}
.cms-article-body h2{
  font-size:25px;
  font-weight:700;
  line-height:1.45;
  margin:48px 0 18px;
  padding-left:14px;
  border-left:3px solid var(--primary);
}
.cms-article-body h3{font-size:19px;font-weight:600;margin:34px 0 14px}
.cms-article-body h4{font-size:16.5px;font-weight:600;margin:26px 0 12px;color:var(--text-2)}
.cms-article-body ul,.cms-article-body ol{margin:0 0 22px;padding-left:22px}
.cms-article-body ul{list-style:disc}
.cms-article-body ol{list-style:decimal}
.cms-article-body li{margin-bottom:10px}
.cms-article-body ul li::marker{color:var(--primary)}
.cms-article-body ol li::marker{color:var(--amber);font-weight:600}
.cms-article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  background:var(--bg-2);
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.cms-article-body blockquote p:last-child{margin-bottom:0}
.cms-article-body a{color:var(--primary);border-bottom:1px solid rgba(53,240,192,.35);transition:border-color var(--dur) var(--ease)}
.cms-article-body a:hover{border-bottom-color:var(--primary)}
.cms-article-body img{border-radius:var(--r-img);margin:26px auto}
.cms-article-body figure{margin:26px 0}
.cms-article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;line-height:1.6}
.cms-article-body table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px}
.cms-article-body th,.cms-article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}
.cms-article-body th{background:var(--bg-2);color:var(--text);font-weight:600}
.cms-article-body code{
  background:rgba(53,240,192,.08);
  color:var(--primary);
  padding:2px 6px;
  border-radius:6px;
  font-size:.92em;
}
.cms-article-body pre{
  background:#0E1016;
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px 18px;
  margin:0 0 24px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.cms-article-body pre code{background:none;color:#C9D1E0;padding:0}
.cms-article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

.empty-state{
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  background:var(--bg-2);
}
.empty-state i{font-size:30px;color:var(--text-3);margin-bottom:16px;display:block}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;max-width:440px;margin:0 auto 24px}

.article-end{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:48px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.article-end .label{font-size:13px;color:var(--text-3);margin-right:4px}

/* ============ 区块标题母题 ============ */
.section-head{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:26px;
}
.section-head .num{
  font-family:var(--font-num);
  font-size:14px;
  letter-spacing:.08em;
  color:var(--primary);
}
.section-head h2{font-size:22px;font-weight:700}
.section-head .rule{
  flex:1;
  height:1px;
  background:linear-gradient(90deg,rgba(53,240,192,.45),rgba(255,255,255,.05) 70%,transparent);
}

/* ============ 相关推荐 ============ */
.related{margin-top:64px}
.related-list{border-top:1px solid var(--line)}
.related-item{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:18px 14px 18px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.related-item:hover{background:rgba(255,255,255,.02);padding-left:12px}
.related-item .idx{
  flex:none;
  width:26px;
  font-family:var(--font-num);
  font-size:14px;
  color:var(--primary);
  padding-top:4px;
}
.related-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.related-item p{font-size:14px;color:var(--text-2);line-height:1.75}
.related-item .arrow{
  margin-left:auto;
  color:var(--text-3);
  font-size:13px;
  padding-top:6px;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.related-item:hover .arrow{transform:translateX(4px);color:var(--primary)}

/* ============ 上下篇 ============ */
.article-pager{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:44px;
}
.pager-card{
  display:block;
  padding:20px 22px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.pager-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-hi);
  background:var(--card-hover);
  box-shadow:var(--glow);
}
.pager-card .dir{
  display:block;
  font-size:12.5px;
  color:var(--text-3);
  letter-spacing:.04em;
  margin-bottom:8px;
}
.pager-card strong{font-size:15.5px;font-weight:600;display:block;line-height:1.6}
.pager-next{text-align:right}

/* ============ FAQ ============ */
.faq-section{
  padding:0 0 96px;
}
.faq-head-wrap{max-width:860px;margin:0 auto}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-wrap .accordion{
  border:0;
  background:transparent;
  margin:0;
}
.faq-wrap .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-wrap .accordion-title{
  position:relative;
  padding:20px 48px 20px 0;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
  background:transparent;
  border:0;
  line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-wrap .accordion-title:hover{color:var(--primary)}
.faq-wrap .accordion-title::before{
  content:"+";
  position:absolute;
  right:14px;
  top:50%;
  left:auto;
  width:auto;
  height:auto;
  margin:0;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--primary);
  background:none;
  border:0;
  transition:transform var(--dur) var(--ease);
}
.faq-wrap .accordion-item.is-active .accordion-title{color:var(--primary)}
.faq-wrap .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg)}
.faq-wrap .accordion-content{
  padding:0 48px 22px 0;
  border:0;
  background:transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}
.faq-wrap .accordion-content p{margin:0}

/* ============ 延伸阅读 CTA ============ */
.cta-band{padding:0 0 96px}
.cta-box{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:32px;
  align-items:center;
  padding:44px;
  border:1px solid var(--line-hi);
  border-radius:20px;
  background-image:linear-gradient(rgba(8,9,12,.84),rgba(8,9,12,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  box-shadow:0 24px 60px rgba(0,0,0,.4);
}
.cta-box h2{font-size:26px;font-weight:700;margin-bottom:12px}
.cta-box p{color:var(--text-2);font-size:15px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-actions .btn{flex:none}
.cta-links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
}
.cta-links a{
  font-size:13.5px;
  color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.14);
  padding-bottom:2px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.cta-links a:hover{color:var(--primary);border-bottom-color:var(--line-hi)}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:#0B0C11;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.9;max-width:340px}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li a{
  display:inline-block;
  font-size:14px;
  color:var(--text-2);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-col li a:hover{color:var(--primary);transform:translateX(2px)}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.9;margin-bottom:10px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  align-items:center;
  padding:22px 0;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .container{max-width:1000px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav{height:60px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;
    left:0;right:0;top:60px;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:12px 16px 22px;
    background:rgba(14,16,22,.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    box-shadow:0 22px 44px rgba(0,0,0,.55);
    transform:translateY(-14px);
    opacity:0;
    pointer-events:none;
    transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{padding:14px 12px;font-size:15.5px;border-radius:10px}
  .nav-links a::after{display:none}
  .nav-links a.active{background:rgba(53,240,192,.08)}
  .nav-links a.active::before{left:0;top:50%;height:20px}
  .cta-box{grid-template-columns:1fr;padding:34px 26px}
  .cta-actions{justify-content:flex-start}
  .article-pager{grid-template-columns:1fr;gap:14px}
  .pager-next{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:640px){
  body{font-size:15px}
  .container{padding:0 16px}
  .logo{font-size:15.5px}
  .logo-mark{width:28px;height:28px;font-size:12px}
  .article-hero{padding:26px 0 32px}
  .article-title{font-size:28px;margin-bottom:16px}
  .breadcrumb .current{max-width:180px}
  .article-main{padding:40px 0 64px}
  .article-cover{margin-bottom:28px}
  .cms-article-body{font-size:16px}
  .cms-article-body h2{font-size:21px;margin:38px 0 16px}
  .cms-article-body h3{font-size:17.5px;margin:28px 0 12px}
  .cms-article-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
  .related-item{padding:16px 0}
  .related-item .arrow{display:none}
  .faq-wrap .accordion-title{padding:18px 40px 18px 0;font-size:15.5px}
  .faq-wrap .accordion-content{padding:0 40px 20px 0}
  .cta-box h2{font-size:21px}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion: reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .article-cover:hover img{transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#08090C;
  --bg-2:#0E1016;
  --card:#14171F;
  --card-hover:#1A1E28;
  --primary:#35F0C0;
  --amber:#FFB03A;
  --violet:#6E56FF;
  --text:#EDEFF5;
  --text-2:#A6ACBB;
  --text-3:#6B7280;
  --line:rgba(255,255,255,.08);
  --line-primary:rgba(53,240,192,.35);
  --danger:#FF5C6C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --radius-img:14px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --glow:0 0 24px rgba(53,240,192,.12);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:56px 56px;
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary)}
button{font-family:inherit;font-size:inherit;border:0;background:none;color:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(53,240,192,.28);color:var(--text)}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0b0c10}
::-webkit-scrollbar-thumb{background:#232733;border-radius:var(--radius-pill)}
::-webkit-scrollbar-thumb:hover{background:rgba(53,240,192,.45)}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  position:relative;
  overflow:hidden;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-amber{background:var(--amber);color:#141002;box-shadow:0 0 0 rgba(255,176,58,0)}
.btn-amber::after{
  content:"";
  position:absolute;
  top:0;left:-60%;
  width:45%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.42),transparent);
  transform:skewX(-18deg);
  transition:left 240ms var(--ease);
}
.btn-amber:hover{background:#ffbd57;color:#141002;box-shadow:0 8px 22px rgba(255,176,58,.22)}
.btn-amber:hover::after{left:120%}
.btn-amber:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  color:var(--primary);
  border:1px solid var(--line-primary);
}
.btn-ghost:hover{background:rgba(53,240,192,.08);color:var(--primary);box-shadow:var(--glow)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.btn-link i{transition:transform var(--dur) var(--ease)}
.btn-link:hover i{transform:translateX(4px)}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(8,9,12,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent 6%,rgba(53,240,192,.55) 38%,rgba(110,86,255,.4) 62%,transparent 94%);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--text);
  white-space:nowrap;
}
.logo:hover{color:var(--text)}
.logo-mark{
  width:30px;height:30px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:9px;
  border:1px solid var(--line-primary);
  background:rgba(53,240,192,.08);
  color:var(--primary);
  font-size:13px;
  box-shadow:var(--glow);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-links a{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
  box-shadow:0 0 10px rgba(53,240,192,.55);
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  transition:border-color var(--dur) var(--ease);
}
.nav-toggle span{
  display:block;
  width:17px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.nav-toggle:hover{border-color:var(--line-primary)}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  padding-top:26px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--primary)}

/* ---------- 导语区 ---------- */
.page-head{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(8,9,12,.82) 0%,rgba(8,9,12,.9) 55%,rgba(8,9,12,.96) 100%);
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  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:46px 46px;
  opacity:.85;
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2}
.page-head-inner{padding:44px 0 56px;max-width:880px}
.page-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(110,86,255,.45);
  background:rgba(110,86,255,.1);
  color:#bdb2ff;
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
}
.page-head h1{
  margin:20px 0 16px;
  font-size:clamp(32px,4.6vw,52px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--text);
}
.page-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  max-width:720px;
}
.head-rule{
  margin-top:26px;
  height:1px;
  width:150px;
  background:linear-gradient(90deg,var(--primary),rgba(53,240,192,0));
  box-shadow:0 0 12px rgba(53,240,192,.45);
}

/* ---------- 主体布局 ---------- */
.main-wrap{padding:72px 0 96px}
.entry-layout{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:56px;
  align-items:start;
}

.section-head{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:8px;
}
.section-num{
  font-family:"Oswald","Barlow Condensed",ui-monospace,monospace;
  font-size:14px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--primary);
  flex:none;
}
.section-title{
  font-size:clamp(21px,2.4vw,27px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--text);
  flex:none;
}
.section-line{
  flex:1 1 auto;
  height:1px;
  min-width:24px;
  background:linear-gradient(90deg,rgba(53,240,192,.42),rgba(53,240,192,0));
}

.entry-section{
  padding:30px 0 34px;
  border-bottom:1px solid var(--line);
  scroll-margin-top:96px;
}
.entry-section:first-child{padding-top:6px}
.entry-section p{
  margin-top:18px;
  color:var(--text-2);
  font-size:16px;
  line-height:1.92;
  max-width:70ch;
}
.entry-section h3{
  margin-top:28px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}

.check-list{
  margin-top:20px;
  display:grid;
  gap:12px;
}
.check-list li{
  position:relative;
  padding-left:30px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.55em;
  width:13px;
  height:13px;
  border-radius:4px;
  border:1px solid var(--line-primary);
  background:rgba(53,240,192,.1);
}
.check-list li b{color:var(--text);font-weight:600}

.tip-bar{
  margin-top:24px;
  padding:16px 20px;
  border-left:3px solid var(--amber);
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  background:var(--bg-2);
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.85;
}
.tip-bar b{color:var(--amber);font-weight:600}

/* ---------- 图片区块 ---------- */
.media-figure{
  margin:40px 0 8px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--card);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.media-figure:hover{
  border-color:var(--line-primary);
  box-shadow:var(--glow);
  transform:translateY(-2px);
}
.media-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-img) var(--radius-img) 0 0;
  transition:transform var(--dur) var(--ease);
}
.media-figure:hover img{transform:scale(1.04)}
.media-figure figcaption{
  padding:14px 20px 16px;
  font-size:13px;
  line-height:1.7;
  color:var(--text-3);
}

/* ---------- 侧栏目录 ---------- */
.toc{
  position:sticky;
  top:96px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 20px;
}
.toc h2{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--text-3);
  text-transform:uppercase;
  margin-bottom:14px;
}
.toc h2 i{color:var(--primary);font-size:12px}
.toc-nav{display:grid;gap:4px}
.toc-nav a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:9px 12px;
  border-radius:9px;
  border-left:2px solid transparent;
  font-size:14px;
  color:var(--text-2);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc-nav a span{
  font-family:"Oswald","Barlow Condensed",ui-monospace,monospace;
  font-size:12px;
  color:var(--text-3);
  letter-spacing:.06em;
}
.toc-nav a:hover{background:var(--card-hover);color:var(--text)}
.toc-nav a.active{
  background:rgba(53,240,192,.07);
  border-left-color:var(--primary);
  color:var(--primary);
}
.toc-nav a.active span{color:var(--primary)}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:1.75;
  color:var(--text-3);
}

/* ---------- FAQ ---------- */
.faq-block{margin-top:72px}
.faq-list{margin-top:28px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:block;
  position:relative;
  padding:22px 48px 22px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  position:absolute;
  right:6px;
  top:50%;
  width:16px;height:16px;
  transform:translateY(-50%);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--primary);
  border-radius:2px;
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%)}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 200ms var(--ease);
}
.faq-a p{
  padding:0 40px 22px 0;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:80px;
  position:relative;
  overflow:hidden;
  background:var(--bg-2);
  border:1px solid var(--line-primary);
  border-radius:var(--radius-card);
  padding:44px;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:36px;
  align-items:center;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:38px 38px;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.01em;
}
.cta-band p{
  margin-top:12px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
  max-width:52ch;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:flex-end;
}

/* ---------- 相关分类 ---------- */
.related{
  margin-top:64px;
  padding-top:34px;
  border-top:1px solid var(--line);
}
.related h2{
  font-size:15px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:16px;
}
.related-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
}
.related-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  color:var(--text-2);
  padding:8px 0;
  border-bottom:1px solid transparent;
}
.related-links a i{font-size:11px;color:var(--primary);transition:transform var(--dur) var(--ease)}
.related-links a:hover{color:var(--primary);border-bottom-color:var(--line-primary)}
.related-links a:hover i{transform:translateX(4px)}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:64px 0 28px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,240,192,.4),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand p{
  margin-top:16px;
  color:var(--text-3);
  font-size:14px;
  line-height:1.85;
  max-width:34ch;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul{display:grid;gap:10px}
.footer-col li a{
  color:var(--text-3);
  font-size:14px;
  display:inline-block;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-col li a:hover{color:var(--primary);transform:translateX(2px)}
.footer-col p{
  color:var(--text-3);
  font-size:14px;
  line-height:1.85;
  margin-bottom:10px;
}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  color:var(--text-3);
  font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .entry-layout{grid-template-columns:1fr;gap:34px}
  .entry-main{order:1}
  .toc{position:static;order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;gap:26px}
  .cta-actions{justify-content:flex-start}
}

@media (max-width:900px){
  .nav{gap:12px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;
    top:68px;
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:14px 18px 20px;
    background:rgba(10,11,15,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms var(--ease);
    max-height:calc(100vh - 68px);
    overflow-y:auto;
  }
  .nav-links.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-links a{
    padding:14px 12px;
    font-size:15px;
    border-left:3px solid transparent;
    border-radius:8px;
  }
  .nav-links a::after{display:none}
  .nav-links a.active{
    border-left-color:var(--primary);
    background:rgba(53,240,192,.06);
    color:var(--primary);
  }
  .nav-links a:hover{background:var(--card-hover)}
  .main-wrap{padding:52px 0 72px}
}

@media (max-width:840px){
  .page-head-inner{padding:32px 0 44px}
  .page-lead{font-size:16px}
  .cta-band{padding:30px 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:640px){
  .container{padding:0 16px}
  .entry-section p{font-size:15px}
  .check-list li{font-size:14.5px}
  .entry-section{padding:24px 0 28px}
  .faq-q{font-size:16px;padding:18px 44px 18px 0}
  .faq-a p{padding-right:16px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .logo{font-size:15px}
  .logo-mark{width:27px;height:27px;font-size:12px}
  .btn-sm{height:38px;padding:0 14px;font-size:13px}
}

@media (max-width:400px){
  .nav-links{padding:12px 14px 18px}
  .section-title{font-size:19px}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
  .media-figure:hover img{transform:none}
  .media-figure:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#08090C;
  --bg-2:#0E1016;
  --card:#14171F;
  --card-hover:#1A1E28;
  --main:#35F0C0;
  --amber:#FFB03A;
  --violet:#6E56FF;
  --text:#EDEFF5;
  --text-2:#A6ACBB;
  --text-3:#6B7280;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(53,240,192,.35);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-chip:999px;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --glow:0 0 24px rgba(53,240,192,.12);
  --sec-gap:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  background-position:center top;
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding-left:1.25em;}
li{margin-bottom:8px;}
::selection{background:rgba(53,240,192,.28);color:#fff;}
:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:4px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-2);}
::-webkit-scrollbar-thumb{background:#242938;border-radius:8px;border:2px solid var(--bg-2);}
::-webkit-scrollbar-thumb:hover{background:#2f3648;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.mono{font-family:"Oswald","Barlow Condensed",system-ui,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,9,12,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,240,192,.55),rgba(110,86,255,.35),transparent);
}
.nav{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.logo-mark{
  width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;border:1px solid var(--line-strong);
  background:rgba(53,240,192,.08);color:var(--main);font-size:13px;
  box-shadow:0 0 18px rgba(53,240,192,.14);
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;font-size:15px;color:var(--text-2);border-radius:8px;
}
.nav-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:16px;border-radius:3px;background:var(--main);
  box-shadow:0 0 10px rgba(53,240,192,.6);transition:transform var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--main);box-shadow:0 0 12px rgba(53,240,192,.65);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.03);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--main);background:rgba(53,240,192,.05);}
.nav-links a.active::before{transform:translateY(-50%) scaleY(1);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:transparent;cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(53,240,192,.06);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;position:relative;overflow:hidden;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn i{font-size:13px;}
.btn-amber{background:var(--amber);color:#1A1206;box-shadow:0 6px 20px rgba(255,176,58,.16);}
.btn-amber:hover{filter:brightness(1.06);box-shadow:0 8px 26px rgba(255,176,58,.24);}
.btn-amber:active{transform:translateY(1px);}
.btn-outline{border-color:var(--line-strong);color:var(--main);background:transparent;}
.btn-outline:hover{background:rgba(53,240,192,.08);box-shadow:var(--glow);}
.btn-outline:active{transform:translateY(1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--main);font-weight:600;font-size:15px;
  border:0;background:none;padding:0;cursor:pointer;
}
.btn-link i{transition:transform var(--dur) var(--ease);}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- Breadcrumb ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-3);}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;}
.crumb li{margin:0;display:flex;align-items:center;gap:8px;}
.crumb li:not(:last-child)::after{content:"/";color:#3A4050;}
.crumb a:hover{color:var(--main);}
.crumb .current{color:var(--text-2);}

/* ---------- Hero ---------- */
.hero{
  position:relative;margin-top:22px;padding:0;
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background-image:linear-gradient(rgba(8,9,12,.80),rgba(8,9,12,.92)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:48px 48px,48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;padding:64px 56px 56px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--main);letter-spacing:.08em;
  border:1px solid var(--line-strong);border-radius:var(--r-chip);
  padding:6px 14px;margin-bottom:22px;background:rgba(53,240,192,.06);
}
.hero h1{font-size:clamp(32px,4.4vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.08;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--main);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:32em;margin-bottom:26px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);transition:transform var(--dur) var(--ease);}
.hero-visual img:hover{transform:scale(1.04);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tag{
  font-size:12px;color:var(--text-2);border:1px solid var(--line);
  border-radius:var(--r-chip);padding:5px 12px;background:rgba(255,255,255,.02);
}

/* ---------- Section base ---------- */
.section{padding:var(--sec-gap) 0 0;}
.sec-head{display:flex;align-items:center;gap:18px;margin-bottom:36px;}
.sec-num{font-size:14px;color:var(--main);letter-spacing:.16em;}
.sec-head h2{font-size:clamp(23px,2.6vw,34px);font-weight:700;white-space:nowrap;}
.sec-line{flex:1;height:1px;background:linear-gradient(90deg,var(--line-strong),transparent);}
.sec-desc{color:var(--text-2);max-width:40em;margin:-18px 0 32px;font-size:15px;}

/* ---------- Chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-chip);
  padding:8px 16px;background:rgba(255,255,255,.02);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.chip i{font-size:11px;color:var(--violet);}
.chip:hover{color:var(--text);border-color:rgba(110,86,255,.5);background:rgba(110,86,255,.08);transform:translateY(-1px);}

/* ---------- QA card matrix ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.qa-card{
  position:relative;display:block;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px 28px;overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.qa-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;border-radius:2px;
  background:var(--main);opacity:.5;transition:opacity var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.qa-card:hover{transform:translateY(-2px);background:var(--card-hover);border-color:var(--line-strong);box-shadow:var(--glow);}
.qa-card:hover::before{opacity:1;box-shadow:0 0 14px rgba(53,240,192,.6);}
.qa-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);background:rgba(53,240,192,.06);color:var(--main);
  font-size:16px;margin-bottom:18px;
}
.qa-card:nth-child(2) .qa-icon{border-color:rgba(255,176,58,.4);background:rgba(255,176,58,.07);color:var(--amber);}
.qa-card:nth-child(3) .qa-icon{border-color:rgba(110,86,255,.45);background:rgba(110,86,255,.09);color:#A99AFF;}
.qa-card:nth-child(5) .qa-icon{border-color:rgba(255,176,58,.4);background:rgba(255,176,58,.07);color:var(--amber);}
.qa-card:nth-child(6) .qa-icon{border-color:rgba(110,86,255,.45);background:rgba(110,86,255,.09);color:#A99AFF;}
.qa-card h3{font-size:19px;font-weight:600;margin-bottom:12px;letter-spacing:0;}
.qa-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;margin:0;}
.qa-idx{position:absolute;top:24px;right:26px;font-size:13px;color:var(--text-3);}
.qa-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--main);margin-top:18px;}
.qa-card:hover .qa-more i{transform:translateX(4px);}
.qa-more i{transition:transform var(--dur) var(--ease);}

/* ---------- Client block ---------- */
.client-block{
  display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:center;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:40px;
}
.client-figure{margin:0;}
.client-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);transition:transform var(--dur) var(--ease);}
.client-figure img:hover{transform:scale(1.04);}
.client-figure figcaption{font-size:13px;color:var(--text-3);margin-top:12px;}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{
  display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);line-height:1.75;margin:0;
}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--main);font-size:13px;margin-top:6px;}
.check-list strong{color:var(--text);font-weight:600;}

/* ---------- Error list ---------- */
.err-list{border-top:1px solid var(--line);margin:0;}
.err-row{
  display:grid;grid-template-columns:.85fr 1fr 1.15fr;gap:24px;
  padding:22px 20px;border-bottom:1px solid var(--line);
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  position:relative;
}
.err-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--main);opacity:0;transition:opacity var(--dur) var(--ease);
}
.err-row:hover{background:var(--card);box-shadow:inset 0 0 0 1px var(--line);}
.err-row:hover::before{opacity:1;}
.err-term{font-size:15px;font-weight:600;color:var(--text);}
.err-term span{display:block;font-size:12px;color:var(--text-3);font-weight:400;margin-top:4px;}
.err-cause{font-size:14.5px;color:var(--text-2);margin:0;}
.err-fix{font-size:14.5px;color:var(--text-2);margin:0;}
.err-fix b{color:var(--main);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:none;border:0;color:var(--text);text-align:left;
  padding:22px 4px;font-size:17px;font-weight:600;cursor:pointer;line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--main);}
.faq-ico{
  flex:none;width:26px;height:26px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:8px;color:var(--main);font-size:12px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.open .faq-ico{transform:rotate(45deg);border-color:var(--line-strong);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--dur) var(--ease);}
.faq-a p{font-size:15px;color:var(--text-2);line-height:1.85;padding:0 4px 22px;margin:0;max-width:64em;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--sec-gap);
  position:relative;overflow:hidden;
  border:1px solid var(--line-strong);border-radius:20px;
  background-image:linear-gradient(rgba(8,9,12,.86),rgba(8,9,12,.94)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  padding:48px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:40px 40px,40px 40px;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.cta-band p{color:var(--text-2);font-size:15px;margin:0;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-links{margin-top:22px;display:flex;flex-wrap:wrap;gap:20px;font-size:14px;color:var(--text-3);}
.cta-links a{color:var(--text-2);border-bottom:1px dashed rgba(255,255,255,.14);padding-bottom:2px;}
.cta-links a:hover{color:var(--main);border-color:var(--line-strong);}

/* ---------- Related ---------- */
.related{padding-top:var(--sec-gap);}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-item{
  display:flex;align-items:flex-start;gap:14px;
  padding:20px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.rel-item:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--card-hover);}
.rel-item i{color:var(--main);font-size:14px;margin-top:6px;}
.rel-item span{display:block;font-size:15px;font-weight:600;}
.rel-item small{display:block;color:var(--text-3);font-size:13px;margin-top:6px;line-height:1.6;}

/* ---------- Footer ---------- */
.site-footer{margin-top:var(--sec-gap);border-top:1px solid var(--line);background:var(--bg-2);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:60px 0 44px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:30em;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:.04em;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;}
.footer-col a:hover{color:var(--main);transform:translateX(2px);}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;margin:0 0 10px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 30px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .hero-inner{padding:52px 40px 44px;gap:36px;}
  .container{max-width:100%;}
}
@media (max-width:1000px){
  :root{--sec-gap:76px;}
  .hero-inner{grid-template-columns:1fr;padding:44px 32px 40px;}
  .hero-visual{order:-1;}
  .qa-grid{grid-template-columns:repeat(2,1fr);}
  .client-block{grid-template-columns:1fr;gap:28px;padding:30px;}
  .cta-band{grid-template-columns:1fr;gap:26px;padding:36px;}
  .cta-actions{justify-content:flex-start;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 34px;}
  .err-row{grid-template-columns:1fr;gap:10px;padding:20px 16px;}
}
@media (max-width:900px){
  .nav{height:56px;gap:12px;}
  .nav-toggle{display:flex;}
  .nav-right .btn{display:none;}
  .logo{font-size:15.5px;}
  .logo-mark{width:26px;height:26px;font-size:12px;border-radius:8px;}
  .nav-links{
    position:fixed;left:0;right:0;top:57px;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(14,16,22,.985);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    padding:10px 20px 22px;
    transform:translateY(-14px);opacity:0;pointer-events:none;
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
    margin-left:0;
    max-height:calc(100vh - 57px);overflow-y:auto;
  }
  .nav-links.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-links a{padding:14px 12px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-links a::after{display:none;}
  .nav-links a::before{width:3px;height:20px;}
  .nav-links a.active{background:rgba(53,240,192,.05);}
}
@media (max-width:768px){
  :root{--sec-gap:62px;}
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .hero-inner{padding:36px 22px 32px;}
  .hero h1{font-size:clamp(28px,7.4vw,40px);}
  .hero-sub{font-size:15.5px;}
  .qa-grid{grid-template-columns:1fr;}
  .qa-card{padding:26px 22px;}
  .sec-head{flex-wrap:wrap;gap:12px;}
  .sec-head h2{white-space:normal;}
  .sec-line{display:none;}
  .faq-q{font-size:15.5px;padding:18px 2px;}
  .cta-band{padding:28px 22px;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:560px){
  .btn{height:46px;width:100%;}
  .btn-sm{height:40px;width:auto;}
  .hero-actions{flex-direction:column;}
  .chip{font-size:12.5px;padding:7px 14px;}
  .tag{font-size:11.5px;}
  .client-block{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .qa-card:hover,.rel-item:hover,.hero-visual img:hover,.client-figure img:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg:#08090C;
  --bg-2:#0E1016;
  --card:#14171F;
  --card-hover:#1A1E28;
  --primary:#35F0C0;
  --amber:#FFB03A;
  --violet:#6E56FF;
  --text:#EDEFF5;
  --text-2:#A6ACBB;
  --text-3:#6B7280;
  --danger:#FF5C6C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(53,240,192,.35);
  --r-card:16px;
  --r-btn:10px;
  --r-chip:999px;
  --r-img:14px;
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --max:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -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)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:rgba(53,240,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0C11}
::-webkit-scrollbar-thumb{background:#242835;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#31374a}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--card);padding:10px 16px;border-radius:var(--r-btn);z-index:120}
.skip-link:focus{left:16px;top:12px}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,9,12,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(53,240,192,0),rgba(53,240,192,.65),rgba(110,86,255,.4),rgba(53,240,192,0));
  pointer-events:none;
}
.nav{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;color:var(--text);white-space:nowrap;
}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:rgba(53,240,192,.1);
  border:1px solid var(--line-strong);
  color:var(--primary);font-size:13px;
  box-shadow:0 0 18px rgba(53,240,192,.16);
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  padding:10px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:color var(--t),background var(--t);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(53,240,192,.6);
}
.nav-links a.active::before{
  content:"";position:absolute;left:-4px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--primary);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text);
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;overflow:hidden;
  transition:transform var(--t),background var(--t),border-color var(--t),filter var(--t),color var(--t);
  white-space:nowrap;
}
.btn::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,rgba(255,255,255,0),rgba(255,255,255,.22),rgba(255,255,255,0));
  transition:left 240ms cubic-bezier(.22,.61,.36,1);
}
.btn:hover::after{left:130%}
.btn:active{transform:translateY(1px)}
.btn-amber{background:var(--amber);color:#191307;box-shadow:0 8px 24px rgba(255,176,58,.16)}
.btn-amber:hover{filter:brightness(1.06)}
.btn-ghost{border-color:rgba(53,240,192,.45);color:var(--primary);background:transparent}
.btn-ghost:hover{background:rgba(53,240,192,.1)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--text-2);
  font-size:14px;font-weight:600;padding:6px 0;
}
.btn-text i{transition:transform var(--t)}
.btn-text:hover{color:var(--primary)}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- 首屏导语区 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  opacity:.42;
}
.page-hero .hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,9,12,.82) 0%,rgba(8,9,12,.9) 55%,rgba(8,9,12,.97) 100%);
}
.page-hero .hero-grid{
  position:absolute;inset:0;opacity:.035;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:52px 52px;
}
.hero-inner{position:relative;z-index:2;padding:36px 0 76px}
.breadcrumb{margin-bottom:28px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.6}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb [aria-current="page"]{color:var(--text-2)}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);text-transform:uppercase;margin-bottom:18px;
}
.hero-eyebrow::before{content:"";width:26px;height:1px;background:var(--primary);opacity:.7}
.page-hero h1{
  font-size:clamp(30px,5.4vw,64px);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
  max-width:16em;margin-bottom:18px;
}
.hero-sub{
  font-size:clamp(16px,2vw,20px);color:var(--text);font-weight:500;
  max-width:36em;margin-bottom:18px;
}
.hero-text{
  max-width:46em;color:var(--text-2);font-size:16px;line-height:1.9;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-chip);
  border:1px solid var(--line);background:rgba(20,23,31,.7);
  font-size:13px;color:var(--text-2);
}
.chip i{color:var(--violet);font-size:11px}
.chip-accent{border-color:var(--line-strong);color:var(--primary)}
.chip-accent i{color:var(--primary)}
.hero-rule{margin-top:40px;height:1px;background:linear-gradient(90deg,rgba(53,240,192,.55),rgba(53,240,192,0))}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:center;gap:18px;margin-bottom:34px}
.sec-num{
  font-family:"Oswald","Barlow Condensed",sans-serif;
  font-size:15px;letter-spacing:.14em;color:var(--primary);padding-top:4px;
}
.sec-title{font-size:clamp(24px,3.2vw,38px);font-weight:700}
.sec-desc{margin-top:12px;color:var(--text-2);max-width:52em;line-height:1.9}
.sec-line{flex:1;height:1px;background:linear-gradient(90deg,rgba(53,240,192,.38),rgba(53,240,192,0))}

/* ---------- 概览条 ---------- */
.overview-bar{
  display:flex;align-items:stretch;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--card),var(--bg-2));
  overflow:hidden;
  box-shadow:0 18px 46px rgba(0,0,0,.35);
}
.overview-step{
  flex:1;display:flex;gap:16px;padding:24px;
  border-right:1px dashed rgba(255,255,255,.12);
}
.overview-step:last-child{border-right:0}
.ov-index{
  font-family:"Oswald",sans-serif;font-size:22px;font-weight:600;
  color:var(--primary);line-height:1;padding-top:2px;min-width:34px;
}
.ov-body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.ov-body p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}
.ov-arrow{
  display:flex;align-items:center;color:var(--text-3);
  padding:0 14px;border-right:1px dashed rgba(255,255,255,.12);
}
.ov-arrow i{font-size:13px}

.quick-anchor{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.quick-anchor a{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-chip);font-size:14px;
  border:1px solid var(--line);color:var(--text-2);background:rgba(20,23,31,.55);
  transition:border-color var(--t),color var(--t),background var(--t);
}
.quick-anchor a:hover{border-color:var(--line-strong);color:var(--primary);background:rgba(53,240,192,.07)}

/* ---------- 步骤流 ---------- */
.stepflow{position:relative;margin-top:8px}
.stepflow::before{
  content:"";position:absolute;left:55px;top:14px;bottom:26px;width:1px;
  background-image:linear-gradient(180deg,rgba(53,240,192,.5) 0 6px,rgba(53,240,192,0) 6px 14px);
  background-size:1px 14px;background-repeat:repeat-y;
}
.step{
  position:relative;
  display:grid;grid-template-columns:112px 1fr;
  align-items:start;
  padding-bottom:34px;
}
.step:last-child{padding-bottom:0}
.step-node{
  position:relative;display:flex;justify-content:center;padding-top:6px;
}
.step-dot{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  font-family:"Oswald",sans-serif;font-size:14px;letter-spacing:.04em;
  color:var(--primary);
  background:radial-gradient(circle at 50% 50%,rgba(53,240,192,.18),rgba(20,23,31,.95) 70%);
  border:1px solid var(--line-strong);
  box-shadow:0 0 20px rgba(53,240,192,.24);
  position:relative;z-index:2;
}
.step-card{
  position:relative;
  margin-left:22px;
  padding:26px 28px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--card),rgba(14,16,22,.85));
  transition:transform var(--t),border-color var(--t),box-shadow var(--t),background var(--t);
}
.step-card::before{
  content:"";position:absolute;left:-23px;top:24px;width:22px;height:1px;
  background:rgba(53,240,192,.35);
}
.step-card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,240,192,.32);
  box-shadow:0 0 24px rgba(53,240,192,.12);
  background:linear-gradient(180deg,var(--card-hover),rgba(14,16,22,.9));
}
.step-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.step-card p{color:var(--text-2);font-size:15.5px;line-height:1.9;margin-bottom:14px}
.step-card p:last-child{margin-bottom:0}
.step-tip{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 16px;border-radius:12px;
  border-left:3px solid var(--amber);
  background:rgba(255,176,58,.07);
  font-size:14px;color:#F0D7AE;line-height:1.8;
}
.step-tip i{color:var(--amber);margin-top:4px;font-size:13px}
.step-list{margin:0 0 14px}
.step-list li{
  position:relative;padding-left:20px;color:var(--text-2);font-size:15px;line-height:1.9;margin-bottom:6px;
}
.step-list li::before{
  content:"";position:absolute;left:2px;top:13px;width:6px;height:6px;border-radius:50%;
  background:var(--primary);opacity:.75;
}

/* ---------- 行列表 ---------- */
.rows{border-top:1px solid var(--line);margin-top:10px}
.row-item{
  position:relative;
  display:grid;grid-template-columns:196px 1fr 40px;gap:22px;align-items:start;
  padding:22px 14px 22px 20px;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.row-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--primary);opacity:0;transform:scaleY(.4);
  transition:opacity var(--t),transform var(--t);
}
.row-item:hover{background:var(--card-hover)}
.row-item:hover::before{opacity:1;transform:scaleY(1)}
.row-key{
  font-size:14px;font-weight:600;color:var(--amber);letter-spacing:.01em;
  padding-top:3px;
}
.row-body h3{font-size:17.5px;font-weight:600;margin-bottom:8px}
.row-body p{color:var(--text-2);font-size:15px;line-height:1.9;margin:0}
.row-arrow{display:flex;justify-content:flex-end;color:var(--text-3);padding-top:4px;transition:color var(--t),transform var(--t)}
.row-item:hover .row-arrow{color:var(--primary);transform:translateX(3px)}

/* ---------- 图文区块 ---------- */
.figure-block{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--card);
}
.figure-media{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#1B2029,#101319)}
.figure-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 260ms cubic-bezier(.22,.61,.36,1)}
.figure-block:hover .figure-media img{transform:scale(1.04)}
.figure-cap{padding:16px 20px;font-size:13px;color:var(--text-3);line-height:1.7;border-top:1px solid var(--line)}

/* ---------- 安全习惯 ---------- */
.habit-grid{margin:0 -12px}
.habit-grid > .cell{padding:0 12px}
.habit-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--card)}
.habit-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.habit-list{margin-top:6px}
.habit-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 0;border-bottom:1px solid var(--line);
}
.habit-list li:first-child{border-top:1px solid var(--line)}
.habit-icon{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;font-size:13px;
  color:var(--primary);background:rgba(53,240,192,.09);border:1px solid var(--line-strong);
}
.habit-list h3{font-size:16.5px;font-weight:600;margin-bottom:6px}
.habit-list p{margin:0;color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- 表格 ---------- */
.compare-wrap{
  margin-top:8px;border:1px solid var(--line);border-radius:var(--r-card);
  overflow-x:auto;background:var(--card);
}
table.compare{width:100%;border-collapse:collapse;min-width:640px}
table.compare th,table.compare td{
  padding:18px 20px;text-align:left;font-size:15px;line-height:1.8;
  border-bottom:1px solid var(--line);
}
table.compare th{
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-3);font-weight:600;background:rgba(20,23,31,.9);
}
table.compare td{color:var(--text-2)}
table.compare td:first-child{color:var(--text);font-weight:600}
table.compare tr:last-child td{border-bottom:0}
table.compare tbody tr{transition:background var(--t)}
table.compare tbody tr:hover{background:var(--card-hover)}

/* ---------- FAQ ---------- */
.faq-list{margin-top:6px;border-top:1px solid var(--line)}
.faq-list .accordion-item{border-bottom:1px solid var(--line)}
.faq-list .accordion-title{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--text);
  transition:color var(--t);
}
.faq-list .accordion-title::before,
.faq-list .accordion-title::after{display:none!important;content:none!important}
.faq-list .accordion-title:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:13px;color:var(--primary);
  transition:transform var(--t),border-color var(--t),background var(--t);
}
.faq-list .accordion-item.is-open .faq-icon{
  transform:rotate(45deg);border-color:var(--line-strong);background:rgba(53,240,192,.1);
}
.faq-list .accordion-content{
  max-height:0;overflow:hidden;padding:0 4px;
  transition:max-height 240ms cubic-bezier(.22,.61,.36,1),padding 240ms cubic-bezier(.22,.61,.36,1);
}
.faq-list .accordion-content p{
  color:var(--text-2);font-size:15px;line-height:1.9;margin:0;
  border-left:2px solid rgba(53,240,192,.35);padding-left:16px;
}
.faq-list .accordion-item.is-open .accordion-content{max-height:420px;padding-bottom:24px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center;
  padding:44px 46px;border-radius:20px;
  border:1px solid var(--line-strong);
  background:linear-gradient(120deg,#0E1016,#14171F 60%,#101420);
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.035;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-band h2{font-size:clamp(22px,2.7vw,30px);font-weight:700;margin-bottom:12px;position:relative;z-index:2}
.cta-band p{color:var(--text-2);margin:0;position:relative;z-index:2;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:2}

/* ---------- 相关分类 ---------- */
.link-row{display:flex;flex-wrap:wrap;gap:26px;margin-top:8px}
.link-row a{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--text-2);font-size:15px;font-weight:500;
  padding-bottom:4px;border-bottom:1px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.link-row a i{color:var(--primary);font-size:12px}
.link-row a:hover{color:var(--primary);border-color:rgba(53,240,192,.4)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#0A0B0F,#08090C);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:42px;border-bottom:1px solid var(--line);
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-2);font-size:14.5px;line-height:1.9;max-width:30em;margin:0}
.footer-col h4{
  font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--text);
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:12px}
.footer-col a{
  color:var(--text-2);font-size:14.5px;
  transition:color var(--t),transform var(--t);
  display:inline-block;
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-col p{color:var(--text-3);font-size:14px;line-height:1.85;margin:0 0 10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:var(--text-3);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    transition-duration:.01ms!important;
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    scroll-behavior:auto!important;
  }
  .btn::after{display:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 20px}
  .nav-links a{padding:10px 11px;font-size:14.5px}
}

@media (max-width:1024px){
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 16px 20px;
    background:rgba(10,11,15,.98);
    backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 48px rgba(0,0,0,.5);
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:14px 12px;font-size:15.5px;border-radius:10px}
  .nav-links a.active::after{left:12px;right:auto;width:36px;bottom:6px}
  .nav-links a.active::before{left:0;height:22px}
  .overview-bar{flex-direction:column}
  .overview-step{border-right:0;border-bottom:1px dashed rgba(255,255,255,.12)}
  .overview-step:last-child{border-bottom:0}
  .ov-arrow{display:none}
  .cta-band{grid-template-columns:1fr;padding:34px 28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:840px){
  body{font-size:15.5px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .hero-inner{padding:26px 0 56px}
  .page-hero h1{max-width:100%}
  .stepflow::before{left:19px}
  .step{grid-template-columns:44px 1fr;padding-bottom:26px}
  .step-node{justify-content:flex-start;padding-top:4px}
  .step-dot{width:32px;height:32px;font-size:12.5px}
  .step-card{margin-left:12px;padding:20px 20px}
  .step-card::before{left:-12px;width:12px}
  .row-item{grid-template-columns:1fr;gap:10px;padding:20px 8px 20px 16px}
  .row-arrow{display:none}
  .figure-cap{font-size:12.5px}
  .site-footer{margin-top:64px;padding:48px 0 22px}
  .footer-bottom{flex-direction:column;gap:8px}
}

@media (max-width:560px){
  .container{padding:0 16px}
  .logo{font-size:15.5px}
  .logo-mark{width:28px;height:28px}
  .nav{height:58px}
  .btn{height:46px;font-size:14.5px}
  .btn-sm{height:40px}
  .hero-actions .btn{width:100%}
  .sec-head{gap:12px;flex-wrap:wrap}
  .sec-line{display:none}
  .quick-anchor a{font-size:13.5px;padding:7px 12px}
  .overview-step{padding:18px}
  .faq-list .accordion-title{font-size:15.5px;padding:18px 2px}
  .cta-band{padding:26px 20px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  table.compare th,table.compare td{padding:14px 16px;font-size:14px}
}