/* roulang page: index */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-s:8px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:20px;
  --r-p:999px;
  --shadow:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35),0 10px 34px -12px rgba(35,230,160,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-body-bg:#070A0C;
  --bs-body-color:#A6B4B8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#23E6A0;
  --bs-link-hover-color:#0FA878;
  --bs-primary-rgb:35,230,160;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--neon);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--neon-deep);}
h1,h2,h3,h4,h5{color:var(--t1);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px;}
.container,.container-lg,.container-md,.container-sm,.container-xl,.container-xxl{max-width:1200px;padding-left:20px;padding-right:20px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 顶部进度条 ---------- */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;background:transparent;z-index:1100;}
.scroll-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--neon-deep),var(--neon));box-shadow:0 0 12px rgba(35,230,160,.6);transition:width .1s linear;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1050;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(4,7,8,.96);border-bottom-color:rgba(35,230,160,.3);}
.nav-wrap{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:2px;font-size:19px;font-weight:800;color:var(--t1);letter-spacing:-.02em;white-space:nowrap;}
.brand-mark{color:var(--neon);}
.brand-text{color:var(--t1);}
.brand:hover .brand-text{color:var(--neon);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:16px;flex:1;}
.nav-links a{
  position:relative;display:block;padding:8px 12px;font-size:15px;font-weight:500;color:var(--t2);border-radius:var(--r-s);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a:hover{color:var(--t1);}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--neon);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);border-radius:2px;
}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--neon);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active::before{
  content:"";position:absolute;top:-1px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px var(--neon);
}
.nav-cta{display:flex;align-items:center;gap:10px;}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line-strong);background:transparent;border-radius:var(--r-s);
  color:var(--t1);font-size:17px;cursor:pointer;transition:border-color .22s var(--ease),color .22s var(--ease);
}
.menu-toggle:hover{border-color:var(--neon);color:var(--neon);}

/* ---------- 按钮 ---------- */
.btn-neon,.btn-ghost,.btn-amber{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:var(--r-m);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .24s var(--ease);white-space:nowrap;text-align:center;
}
.btn-neon{background:var(--neon);color:#04140E;border-color:var(--neon);}
.btn-neon:hover{background:var(--neon-deep);border-color:var(--neon-deep);color:#04140E;box-shadow:var(--glow);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--t1);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon);background:rgba(35,230,160,.06);}
.btn-amber{background:rgba(255,178,56,.12);color:var(--amber);border-color:rgba(255,178,56,.4);}
.btn-amber:hover{background:rgba(255,178,56,.2);color:var(--amber);border-color:var(--amber);}
.btn-lg-x{padding:17px 34px;font-size:16px;border-radius:var(--r-m);}
.btn-neon .fa-arrow-right,.btn-ghost .fa-arrow-right{transition:transform .24s var(--ease);}
.btn-neon:hover .fa-arrow-right,.btn-ghost:hover .fa-arrow-right{transform:translateX(4px);}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0;position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--neon);letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px;}
.section-head h2{font-size:33px;font-weight:700;line-height:1.25;}
.section-head p{color:var(--t3);font-size:14px;max-width:520px;margin-top:10px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--r-p);
  border:1px solid rgba(35,230,160,.4);color:var(--neon);font-size:12.5px;font-weight:600;background:rgba(35,230,160,.07);
}
.chip-amber{border-color:rgba(255,178,56,.42);color:var(--amber);background:rgba(255,178,56,.08);}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:660px;display:flex;align-items:center;padding:150px 0 90px;
  background-image:linear-gradient(180deg,rgba(7,10,12,.86),rgba(7,10,12,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 22% 18%,rgba(35,230,160,.16),transparent 46%),
                   linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,48px 48px,48px 48px;
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero h1{font-size:48px;font-weight:800;line-height:1.14;letter-spacing:-.02em;margin:22px 0 20px;}
.hero h1 em{font-style:normal;color:var(--neon);}
.hero-sub{font-size:17px;line-height:1.9;color:var(--t2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line);}
.hero-trust div{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--t3);}
.hero-trust strong{color:var(--t1);font-weight:700;font-size:16px;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(35,230,160,.8);flex:0 0 auto;}
.dot-amber{background:var(--amber);box-shadow:0 0 8px rgba(255,178,56,.8);}
.device-frame{
  width:100%;max-width:330px;margin:0 auto;aspect-ratio:9/19.5;border-radius:var(--r-xl);
  border:1px solid rgba(35,230,160,.35);background:var(--surface);overflow:hidden;position:relative;
  box-shadow:var(--glow);transform:perspective(1200px) rotateY(-8deg) rotateX(3deg);
  transition:transform .5s var(--ease);
}
.device-frame:hover{transform:perspective(1200px) rotateY(0) rotateX(0);}
.device-frame img{width:100%;height:100%;object-fit:cover;}
.device-wrap{position:relative;}
.device-wrap::after{
  content:"";position:absolute;left:50%;bottom:-28px;transform:translateX(-50%);
  width:70%;height:60px;background:radial-gradient(ellipse at center,rgba(35,230,160,.22),transparent 70%);filter:blur(14px);
}

/* ---------- 价值条目 ---------- */
.value-list{border-top:1px solid var(--line);}
.value-item{
  display:flex;gap:32px;align-items:flex-start;padding:34px 0;border-bottom:1px solid var(--line);
  transition:padding-left .28s var(--ease);
}
.value-item:nth-child(even){padding-left:32px;}
.value-item:hover{padding-left:12px;}
.value-item:nth-child(even):hover{padding-left:44px;}
.value-num{
  font-size:30px;font-weight:800;color:var(--amber);min-width:62px;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.1;
}
.value-body h3{font-size:21px;font-weight:650;margin-bottom:8px;}
.value-body p{color:var(--t2);font-size:15.5px;max-width:760px;}

/* ---------- 轮播 ---------- */
.carousel-neon{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);padding:44px;position:relative;overflow:hidden;}
.carousel-neon .device-frame{max-width:230px;transform:none;}
.carousel-neon .device-frame:hover{transform:translateY(-4px);}
.slide-title{font-size:23px;font-weight:700;margin:14px 0 12px;}
.slide-text{color:var(--t2);font-size:15.5px;max-width:520px;}
.carousel-indicators{position:static;margin:34px 0 0;justify-content:flex-start;gap:8px;}
.carousel-indicators [data-bs-target]{
  width:24px;height:4px;border-radius:2px;background:var(--line-strong);border:0;opacity:1;margin:0;
  transition:all .26s var(--ease);
}
.carousel-indicators .active{width:46px;background:var(--neon);box-shadow:0 0 10px rgba(35,230,160,.6);}
.carousel-control-prev,.carousel-control-next{
  width:44px;height:44px;top:auto;bottom:38px;border-radius:50%;border:1px solid var(--line-strong);
  opacity:1;background:var(--bg-1);transition:all .24s var(--ease);
}
.carousel-control-prev{left:auto;right:104px;}
.carousel-control-next{right:44px;}
.carousel-control-prev:hover,.carousel-control-next:hover{border-color:var(--neon);background:rgba(35,230,160,.1);}
.carousel-control-prev-icon,.carousel-control-next-icon{display:none;}
.carousel-control-prev::after,.carousel-control-next::after{color:var(--t1);font-size:18px;line-height:1;}
.carousel-control-prev::after{content:"\2039";}
.carousel-control-next::after{content:"\203A";}

/* ---------- 系统要求 ---------- */
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:34px;height:100%;
  position:relative;transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.spec-card:hover{border-color:rgba(35,230,160,.4);transform:translateY(-3px);}
.spec-card::after{content:"";position:absolute;left:34px;right:34px;bottom:0;height:2px;background:rgba(35,230,160,.2);border-radius:2px;}
.spec-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;}
.spec-head i{font-size:26px;color:var(--neon);}
.spec-head h3{font-size:20px;}
.spec-list li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;}
.spec-list li:last-child{border-bottom:0;}
.spec-list span:first-child{color:var(--t3);}
.spec-list span:last-child{color:var(--t1);font-weight:600;text-align:right;}
.spec-note{font-size:13px;color:var(--t3);margin-top:22px;}

/* ---------- 评价墙 ---------- */
.wall{column-count:3;column-gap:24px;}
.wall-card{
  position:relative;display:inline-block;width:100%;margin-bottom:24px;break-inside:avoid;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:26px;
  overflow:hidden;transition:transform .26s var(--ease),border-color .26s var(--ease);
}
.wall-card:hover{transform:translateY(-4px);border-color:rgba(35,230,160,.4);}
.wall-card::after{
  content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(35,230,160,.12),transparent);
  transition:left .5s var(--ease);
}
.wall-card:hover::after{left:130%;}
.wall-top{display:flex;align-items:center;gap:13px;margin-bottom:14px;}
.avatar{width:46px;height:46px;border-radius:var(--r-m);object-fit:cover;border:1px solid var(--line-strong);}
.wall-name{font-size:15px;color:var(--t1);font-weight:650;}
.stars{color:var(--amber);font-size:12.5px;letter-spacing:2px;}
.wall-card p{font-size:14.8px;color:var(--t2);line-height:1.85;}
.wall-time{font-size:12.5px;color:var(--t3);margin-top:14px;}

/* ---------- 下载区 ---------- */
.download-box{
  position:relative;border:1px solid rgba(35,230,160,.25);border-radius:var(--r-xl);
  padding:56px 44px;background:var(--bg-1);overflow:hidden;text-align:center;
}
.download-box::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 0%,rgba(35,230,160,.14),transparent 60%);pointer-events:none;
}
.download-box > *{position:relative;z-index:2;}
.download-box h2{font-size:32px;margin-bottom:14px;}
.download-box p.lead{color:var(--t2);font-size:16px;max-width:660px;margin:0 auto;}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px;}
.dl-note{font-size:13px;color:var(--t3);margin-top:22px;}

/* ---------- CMS 卡片 ---------- */
.card-neon{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;height:100%;
  display:flex;flex-direction:column;transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.card-neon:hover{transform:translateY(-3px);border-color:rgba(35,230,160,.4);box-shadow:var(--shadow);}
.post-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.card-neon:hover .post-thumb img{transform:scale(1.05);}
.post-badge{
  position:absolute;left:14px;top:14px;padding:4px 12px;border-radius:var(--r-p);font-size:12px;font-weight:600;
  color:var(--neon);background:rgba(7,10,12,.78);border:1px solid rgba(35,230,160,.42);backdrop-filter:blur(4px);
}
.post-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:17.5px;font-weight:650;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body h3 a{color:var(--t1);}
.post-body h3 a:hover{color:var(--neon);}
.post-body p{font-size:14.3px;color:var(--t3);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1;}
.post-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);}
.post-foot .time{font-size:12.5px;color:var(--t3);}
.post-foot .arrow{color:var(--neon);transition:transform .24s var(--ease);}
.card-neon:hover .post-foot .arrow{transform:translateX(4px);}
.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-l);background:var(--surface);
}
.empty-icon{font-size:34px;color:var(--neon);opacity:.7;margin-bottom:14px;}
.empty-state p{color:var(--t3);font-size:15px;margin-bottom:20px;}

/* ---------- FAQ ---------- */
.acc-neon .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.acc-neon .accordion-button{
  background:transparent;color:var(--t1);font-size:17px;font-weight:600;padding:22px 46px 22px 20px;border-radius:0;
  box-shadow:none;border-left:3px solid transparent;transition:all .24s var(--ease);
}
.acc-neon .accordion-button:not(.collapsed){color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.04);}
.acc-neon .accordion-button::after{
  content:"\002B";font-family:inherit;background-image:none;color:var(--t3);font-size:18px;
  width:auto;height:auto;transform:none;transition:color .24s var(--ease);display:flex;align-items:center;
}
.acc-neon .accordion-button:not(.collapsed)::after{content:"\2212";color:var(--neon);}
.acc-neon .accordion-button:focus{box-shadow:none;outline:2px solid rgba(35,230,160,.5);outline-offset:-2px;}
.acc-neon .accordion-body{padding:0 46px 24px 20px;color:var(--t2);font-size:15.4px;line-height:1.85;}

/* ---------- CTA 条 ---------- */
.cta-strip{
  border:1px solid var(--line-strong);border-radius:var(--r-xl);padding:44px;background:var(--surface);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-strip h3{font-size:24px;margin-bottom:8px;}
.cta-strip p{color:var(--t3);font-size:14.5px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand{font-size:19px;margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;max-width:330px;}
.footer-col h4{
  font-size:14px;font-weight:600;color:var(--neon);margin-bottom:18px;display:flex;align-items:center;gap:8px;
}
.footer-col h4::before{content:"";width:14px;height:2px;background:var(--neon);border-radius:2px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--t2);}
.footer-col a:hover{color:var(--neon);}
.footer-col .plain{font-size:14px;color:var(--t3);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;
  gap:18px;flex-wrap:wrap;font-size:13px;color:var(--t3);
}
.footer-bottom .end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(35,230,160,.8);}

/* ---------- Offcanvas ---------- */
.offcanvas-neon{background:var(--bg-1);border-left:1px solid var(--line);color:var(--t2);}
.offcanvas-neon .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px;}
.offcanvas-neon .btn-close{filter:invert(1) grayscale(1);opacity:.7;}
.oc-link{
  display:flex;align-items:center;height:48px;padding:0 20px;color:var(--t2);font-size:15.5px;
  border-bottom:1px solid var(--line);border-left:3px solid transparent;transition:all .22s var(--ease);
}
.oc-link:hover{color:var(--t1);background:rgba(255,255,255,.03);}
.oc-link.active{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.06);}
.oc-cta{padding:22px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-links a{padding:8px 9px;font-size:14.3px;}
  .hero h1{font-size:42px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-cta .btn-neon{display:none;}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-wrap{height:60px;justify-content:space-between;}
  .section{padding:72px 0;}
  .hero{min-height:auto;padding:120px 0 72px;}
  .hero h1{font-size:34px;}
  .device-wrap{margin-top:52px;}
  .wall{column-count:2;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .carousel-control-prev,.carousel-control-next{display:none;}
  .value-item:nth-child(even){padding-left:0;}
  .value-item:nth-child(even):hover,.value-item:hover{padding-left:0;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .section{padding:60px 0;}
  .section-head h2{font-size:26px;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-trust{gap:18px;}
  .carousel-neon{padding:26px 20px 90px;}
  .wall{column-count:1;}
  .download-box{padding:40px 22px;}
  .download-box h2{font-size:25px;}
  .cta-strip{padding:30px 22px;}
  .spec-card{padding:26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .value-num{font-size:24px;min-width:48px;}
  .value-item{gap:18px;padding:26px 0;}
}
@media (max-width:519.98px){
  .hero h1{font-size:26px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn-neon,.hero-actions .btn-ghost{width:100%;}
  .dl-actions{flex-direction:column;}
  .dl-actions .btn-neon,.dl-actions .btn-ghost{width:100%;}
  .brand{font-size:17px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-s:8px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:20px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35),0 10px 34px -12px rgba(35,230,160,.45);
  --ease:cubic-bezier(.2,.7,.2,1);

  --bs-body-bg:#070A0C;
  --bs-body-color:#A6B4B8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#A6B4B8;
  --bs-link-hover-color:#23E6A0;
  --bs-primary-rgb:35,230,160;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--t2);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--neon)}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}
::selection{background:rgba(35,230,160,.28);color:#fff}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ Header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:68px;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,9,11,.96)}
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:1px;width:0;
  background:linear-gradient(90deg,rgba(35,230,160,.2),var(--neon));
  transition:width .1s linear;
}
.header-inner{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:baseline;gap:2px;font-weight:800;letter-spacing:-.02em;flex:0 0 auto}
.brand-mark{color:var(--t1);font-size:20px}
.brand-text{color:var(--neon);font-size:20px}
.brand:hover .brand-text{color:#4ff5bb}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto}
.nav-links a{
  position:relative;
  display:block;
  padding:22px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:14px;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);border-radius:2px;
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--neon)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active::before{
  content:"";position:absolute;top:20px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 8px 2px rgba(35,230,160,.7);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn-neon{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;border:none;border-radius:var(--r-m);
  background:var(--neon);color:#04231A;font-size:15px;font-weight:700;
  cursor:pointer;transition:all .22s var(--ease);
}
.btn-neon:hover{background:var(--neon-deep);color:#04231A;box-shadow:0 10px 28px -12px rgba(35,230,160,.7)}
.btn-neon i{font-size:13px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-m);
  border:1px solid var(--line-strong);background:transparent;color:var(--t1);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}

/* mobile offcanvas */
.offcanvas.offcanvas-neon{
  background:var(--bg-1);color:var(--t2);width:300px;
  border-right:1px solid var(--line);
}
.offcanvas-neon .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-neon .btn-close{filter:invert(1) grayscale(1);opacity:.7}
.mobile-nav a{
  display:flex;align-items:center;height:48px;padding:0 20px;
  border-bottom:1px solid var(--line);border-left:3px solid transparent;
  font-size:15px;color:var(--t2);
}
.mobile-nav a:hover{color:var(--t1);background:rgba(255,255,255,.03)}
.mobile-nav a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.06)}
.mobile-cta{padding:20px}
.mobile-cta .btn-neon{width:100%;justify-content:center}

/* ============ Page hero ============ */
.page-hero{
  position:relative;
  margin-top:68px;
  padding:96px 0 78px;
  background-image:linear-gradient(rgba(7,10,12,.82),rgba(7,10,12,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(560px 320px at 18% 0%,rgba(35,230,160,.16),transparent 70%);
  pointer-events:none;
}
.page-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: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%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:22px}
.crumbs a{color:var(--t3)}
.crumbs a:hover{color:var(--neon)}
.crumbs i{font-size:10px;opacity:.6}
.crumbs .cur{color:var(--t2)}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border:1px solid rgba(35,230,160,.4);border-radius:999px;
  font-size:13px;color:var(--neon);background:rgba(35,230,160,.06);
  margin-bottom:20px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px 2px rgba(35,230,160,.7)}
.page-hero h1{
  font-size:clamp(28px,4vw,46px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  margin-bottom:18px;
  max-width:820px;
}
.page-hero h1 span{color:var(--neon)}
.page-hero .lede{font-size:17px;max-width:680px;color:var(--t2);margin:0 0 30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 24px;border-radius:var(--r-m);
  border:1px solid var(--line-strong);color:var(--t1);font-size:15px;font-weight:600;
  background:rgba(255,255,255,.02);transition:all .22s var(--ease);
}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon);background:rgba(35,230,160,.06)}
.btn-neon.lg{height:48px;padding:0 26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px}
.hero-meta div{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--t2)}
.hero-meta i{color:var(--neon);font-size:13px}
.hero-meta b{color:var(--t1);font-weight:700;font-variant-numeric:tabular-nums}

/* ============ Sections ============ */
.section{padding:96px 0}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:52px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;letter-spacing:.08em;color:var(--neon);text-transform:uppercase;
  margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:16px;letter-spacing:-.02em}
.section-head p{font-size:16px;color:var(--t2);margin:0}

/* ============ Prep cards ============ */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prep-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:28px 24px;box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.prep-card:hover{transform:translateY(-3px);border-color:rgba(35,230,160,.4)}
.prep-card .idx{font-size:13px;color:var(--amber);font-weight:700;letter-spacing:.14em;font-variant-numeric:tabular-nums}
.prep-card h3{font-size:19px;margin:12px 0 10px;font-weight:650}
.prep-card p{font-size:15px;margin:0;color:var(--t2)}

/* ============ Timeline ============ */
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:15px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--neon),rgba(35,230,160,.06));border-radius:2px;
}
.tl-item{position:relative;padding-left:66px;padding-bottom:52px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;
  border:1px solid rgba(35,230,160,.5);background:var(--bg-0);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 5px rgba(7,10,12,.95);
}
.tl-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:28px 28px 24px;box-shadow:var(--shadow-card);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.tl-body:hover{border-color:rgba(35,230,160,.32);background:var(--surface-2)}
.tl-body h3{font-size:21px;margin-bottom:12px;font-weight:650}
.tl-body h3 em{font-style:normal;color:var(--neon);font-size:14px;font-weight:600;margin-left:10px}
.tl-body p{font-size:15.5px;margin-bottom:14px}
.tl-body p:last-child{margin-bottom:0}
.tl-body .tl-shot{
  margin:20px 0 0;border-radius:var(--r-m);overflow:hidden;
  border:1px solid var(--line);
}
.tl-body .tl-shot img{width:100%;height:220px;object-fit:cover}
.tl-body .tl-shot figcaption{
  padding:10px 14px;font-size:13px;color:var(--t3);background:var(--bg-1);
  border-top:1px solid var(--line);
}
.tick-list{display:grid;gap:10px;margin:16px 0}
.tick-list li{position:relative;padding-left:24px;font-size:15px;color:var(--t2)}
.tick-list li::before{
  content:"";position:absolute;left:4px;top:.62em;width:6px;height:6px;border-radius:1px;
  background:var(--neon);
}
.note-inline{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:var(--r-m);
  background:rgba(255,178,56,.07);border-left:3px solid var(--amber);
  font-size:14.5px;color:#d8c39a;
}
.note-inline i{color:var(--amber);margin-top:5px;font-size:13px}
.note-inline p{margin:0}

/* ============ Spec cards ============ */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:30px 28px;box-shadow:var(--shadow-card);border-bottom:1px solid rgba(35,230,160,.2);
  position:relative;overflow:hidden;
}
.spec-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(35,230,160,0));
}
.spec-card .spec-title{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.spec-card .spec-title i{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(35,230,160,.4);color:var(--neon);background:rgba(35,230,160,.08);font-size:17px;
}
.spec-card .spec-title h3{font-size:19px;font-weight:650}
.spec-list{display:grid;gap:0}
.spec-list li{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;
}
.spec-list li:last-child{border-bottom:none}
.spec-list .k{color:var(--t3);font-size:14px}
.spec-list .v{color:var(--t1);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.spec-foot{font-size:13px;color:var(--t3);margin-top:22px}

/* ============ Checklist ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.check-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px;transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.check-item:hover{transform:translateY(-3px);border-color:rgba(35,230,160,.4)}
.check-item .ci{
  flex:0 0 auto;width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(35,230,160,.45);color:var(--neon);background:rgba(35,230,160,.08);font-size:15px;
}
.check-item h3{font-size:17px;margin-bottom:8px;font-weight:650}
.check-item p{font-size:14.5px;margin:0;color:var(--t2)}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto}
.acc-neon .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;
}
.acc-neon .accordion-button{
  background:transparent;color:var(--t1);font-size:17px;font-weight:600;
  padding:22px 44px 22px 18px;box-shadow:none;border-left:3px solid transparent;
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.acc-neon .accordion-button:not(.collapsed){
  color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.04);
}
.acc-neon .accordion-button:focus{box-shadow:none;outline:none}
.acc-neon .accordion-button::after{
  content:"\002b";font-family:inherit;background-image:none;font-size:20px;font-weight:400;
  width:auto;height:auto;color:var(--t3);transform:none;position:absolute;right:18px;top:50%;
  margin-top:-14px;line-height:1;
}
.acc-neon .accordion-button:not(.collapsed)::after{content:"\2212";color:var(--neon)}
.acc-neon .accordion-body{padding:2px 40px 26px 18px;font-size:15.5px;line-height:1.85;color:var(--t2)}

/* ============ CTA ============ */
.cta-box{
  position:relative;overflow:hidden;
  border:1px solid rgba(35,230,160,.25);border-radius:var(--r-xl);
  background:var(--surface);
  padding:56px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 220px at 12% 0%,rgba(35,230,160,.14),transparent 70%);
  pointer-events:none;
}
.cta-box > *{position:relative;z-index:2}
.cta-box h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;letter-spacing:-.02em}
.cta-box p{margin:0;max-width:620px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ Footer ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14.5px;color:var(--t3);line-height:1.85;margin:0;max-width:380px}
.footer-col h4{
  font-size:14px;color:var(--neon);font-weight:600;margin-bottom:18px;
  display:flex;align-items:center;gap:8px;
}
.footer-col h4::before{content:"";width:14px;height:2px;background:var(--neon);border-radius:2px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:var(--t2)}
.footer-col a:hover{color:var(--neon)}
.footer-col .plain{font-size:14.5px;color:var(--t3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
.end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px 2px rgba(35,230,160,.6)}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:1199.98px){
  .nav-links a{padding:22px 9px;font-size:14.5px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-actions .btn-neon{display:none}
  .section{padding:72px 0}
  .page-hero{padding:78px 0 64px}
  .prep-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-box{padding:40px 28px}
}
@media (max-width:767.98px){
  .site-header,.header-inner{height:60px}
  .brand-mark,.brand-text{font-size:18px}
  .page-hero{margin-top:60px;padding:64px 0 54px}
  .page-hero .lede{font-size:15.5px}
  .hero-actions{gap:12px}
  .btn-neon.lg,.btn-ghost{height:46px;padding:0 20px;font-size:14.5px;width:100%;justify-content:center}
  .hero-meta{gap:16px;margin-top:26px}
  .section{padding:60px 0}
  .prep-grid,.spec-grid,.check-grid{grid-template-columns:1fr}
  .tl-item{padding-left:52px;padding-bottom:40px}
  .timeline::before{left:14px}
  .tl-node{width:29px;height:29px;font-size:11px}
  .tl-body{padding:22px 20px}
  .tl-body h3{font-size:18.5px}
  .tl-body .tl-shot img{height:170px}
  .cta-box{padding:32px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-neon,.cta-actions .btn-ghost{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .acc-neon .accordion-button{font-size:15.5px;padding:18px 40px 18px 14px}
  .acc-neon .accordion-body{padding:0 24px 22px 14px;font-size:14.5px}
}
@media (max-width:519.98px){
  .container{padding:0 16px}
  .page-hero h1{font-size:26px}
  .section-head{margin-bottom:36px}
  .spec-card,.prep-card,.check-item{padding:22px 18px}
  .spec-list li{flex-direction:column;align-items:flex-start;gap:2px}
  .spec-list .v{text-align:left}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-s:8px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:20px;
  --r-pill:999px;
  --container:1200px;
  --read:760px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35),0 10px 34px -12px rgba(35,230,160,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t2);
  --bs-border-color:var(--line);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--neon-deep);
  --bs-primary-rgb:35,230,160;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--neon);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--neon-deep)}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 18px}
ul,ol{margin:0 0 18px;padding-left:22px}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  --bs-gutter-x:24px;
}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 顶部导航 ============ */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;background:transparent;z-index:1060;pointer-events:none}
.scroll-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--neon),var(--neon-deep));box-shadow:0 0 12px rgba(35,230,160,.6)}
.site-header{
  position:sticky;top:0;z-index:1050;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(7,10,12,.96);border-bottom-color:rgba(35,230,160,.3)}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:inline-flex;align-items:baseline;gap:2px;font-size:19px;letter-spacing:-.02em;white-space:nowrap}
.brand-mark{color:var(--t1);font-weight:800}
.brand-text{color:var(--neon);font-weight:500}
.brand:hover .brand-mark{color:var(--neon)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;
  display:block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  border-radius:var(--r-s);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);border-radius:2px;
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--neon)}
.nav-links a.active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(35,230,160,.8)}
.nav-links a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 8px rgba(35,230,160,.9);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-m);border:1px solid transparent;
  background:var(--neon);color:#06231A;font-weight:700;font-size:15px;
  cursor:pointer;transition:background .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.btn-neon:hover{background:var(--neon-deep);color:#04170F;box-shadow:0 0 0 1px rgba(35,230,160,.5),0 14px 34px -14px rgba(35,230,160,.75);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-m);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
  color:var(--t1);font-weight:600;font-size:15px;cursor:pointer;
  transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{border-color:rgba(35,230,160,.6);color:var(--neon);background:rgba(35,230,160,.06);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-m);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
  color:var(--t1);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(35,230,160,.6);color:var(--neon)}
.offcanvas{background:var(--bg-1);color:var(--t2);border-left:1px solid var(--line)}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-title{font-size:17px;color:var(--t1)}
.offcanvas-body{padding:14px 0 24px}
.m-nav{display:flex;flex-direction:column}
.m-nav a{
  display:block;padding:14px 22px;font-size:15px;color:var(--t2);
  border-left:3px solid transparent;border-bottom:1px solid var(--line);
}
.m-nav a:hover{color:var(--t1);background:rgba(255,255,255,.03)}
.m-nav a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.05)}
.m-cta{padding:20px 22px 0}
.m-cta .btn-neon{width:100%}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6)}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(35,230,160,.05),rgba(7,10,12,0))}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 0;font-size:13.5px;color:var(--t3)}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--neon)}
.crumb .sep{color:var(--t3);opacity:.6}
.crumb .current{color:var(--t3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-hero{padding:56px 0 34px;position:relative;overflow:hidden}
.article-hero::before{
  content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);
  width:760px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,230,160,.16),rgba(35,230,160,0) 68%);
  pointer-events:none;
}
.article-hero .inner{position:relative;max-width:900px}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--neon);letter-spacing:.08em}
.kicker::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px;display:inline-block}
.article-hero h1{
  font-size:44px;font-weight:800;letter-spacing:-.02em;line-height:1.16;
  margin:16px 0 20px;color:var(--t1);
}
.meta-bar{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13.5px;color:var(--t3)}
.meta-bar .dot{width:6px;height:6px;border-radius:50%;background:var(--neon);display:inline-block;opacity:.85}
.meta-bar .chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(35,230,160,.35);color:var(--neon);font-size:12.5px;font-weight:600;
}

/* ============ 正文布局 ============ */
.article-wrap{padding:20px 0 96px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,var(--read)) 240px;
  gap:56px;justify-content:center;align-items:start;
}
.article-body{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:38px 40px 42px;
  box-shadow:var(--shadow-card);
}
.article-content{font-size:16.5px;line-height:1.9;color:var(--t2)}
.article-content h2{
  font-size:26px;margin:44px 0 16px;padding-left:16px;position:relative;color:var(--t1);
}
.article-content h2:first-child{margin-top:0}
.article-content h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--neon),var(--neon-deep));
}
.article-content h3{font-size:20px;margin:32px 0 12px;color:rgba(35,230,160,.92)}
.article-content h4{font-size:17px;margin:24px 0 10px;color:var(--t1)}
.article-content p{margin:0 0 20px}
.article-content a{border-bottom:1px solid rgba(35,230,160,.45)}
.article-content strong{color:var(--t1);font-weight:700}
.article-content ul,.article-content ol{margin:0 0 22px;padding-left:6px;list-style:none}
.article-content ul li,.article-content ol li{position:relative;padding-left:24px;margin-bottom:10px}
.article-content ul li::before{
  content:"";position:absolute;left:4px;top:.78em;width:6px;height:6px;border-radius:2px;
  background:var(--neon);
}
.article-content ol{counter-reset:li}
.article-content ol li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:.18em;width:18px;height:18px;border-radius:5px;
  display:flex;align-items:center;justify-content:center;
  font-size:11.5px;font-weight:700;color:#06231A;background:var(--amber);
  font-variant-numeric:tabular-nums;
}
.article-content blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--amber);
  background:var(--bg-1);border-radius:0 var(--r-m) var(--r-m) 0;color:var(--t2);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{
  border-radius:var(--r-m);margin:26px auto;width:100%;height:auto;
  border:1px solid var(--line);
}
.article-content figure{margin:26px 0}
.article-content figcaption{text-align:center;font-size:13px;color:var(--t3);margin-top:10px}
.article-content table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
}
.article-content thead th{
  background:var(--bg-1);color:var(--t1);font-weight:700;
  border-bottom:1px solid rgba(35,230,160,.4);
}
.article-content th,.article-content td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-content tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-content hr{border:none;border-top:1px solid var(--line);margin:36px 0}
.article-content code{
  background:var(--bg-1);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:14px;color:var(--neon);
}

/* 空态 */
.empty-state{
  text-align:center;padding:60px 24px;
  border:1px dashed var(--line-strong);border-radius:var(--r-l);background:var(--bg-1);
}
.empty-state .ico{
  width:64px;height:64px;margin:0 auto 20px;border-radius:50%;
  border:1px solid rgba(35,230,160,.4);display:flex;align-items:center;justify-content:center;
  color:var(--neon);font-size:24px;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{margin-bottom:22px;color:var(--t3)}

/* 粘性目录 */
.toc{
  position:sticky;top:96px;
  border:1px solid var(--line);border-radius:var(--r-l);background:var(--bg-1);
  padding:20px 18px;
}
.toc h4{font-size:13px;letter-spacing:.1em;color:var(--neon);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.toc h4::before{content:"";width:14px;height:2px;background:var(--neon);border-radius:2px}
.toc ul{list-style:none;margin:0;padding:0}
.toc li{margin-bottom:2px}
.toc a{
  display:block;padding:7px 10px;border-radius:8px;font-size:13.5px;line-height:1.5;
  color:var(--t3);border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.toc a.on{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.07)}
.toc .toc-back{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t2);
}
.toc .toc-back:hover{color:var(--neon)}

/* ============ 标签 / 相关 / CTA ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row .label{font-size:13px;color:var(--t3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
  font-size:13px;color:var(--t2);transition:all .22s var(--ease);
}
.tag:hover{border-color:rgba(35,230,160,.6);color:var(--neon);background:rgba(35,230,160,.06)}

.section{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:32px}
.section-head .sub{color:var(--t3);font-size:14.5px;margin-top:8px}
.more-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.more-link i{transition:transform .22s var(--ease)}
.more-link:hover i{transform:translateX(4px)}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-neon{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card-neon:hover{transform:translateY(-3px);border-color:rgba(35,230,160,.45);box-shadow:0 20px 44px -28px rgba(35,230,160,.5)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card-neon:hover .card-cover img{transform:scale(1.05)}
.card-cover .badge-cat{
  position:absolute;left:12px;top:12px;padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(7,10,12,.8);border:1px solid rgba(35,230,160,.5);
  color:var(--neon);font-size:12px;font-weight:600;backdrop-filter:blur(6px);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.card-body h3 a{color:var(--t1)}
.card-body h3 a:hover{color:var(--neon)}
.card-body p{font-size:14px;color:var(--t3);margin-bottom:16px}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--t3);border-top:1px solid var(--line);padding-top:14px}
.card-foot i{color:var(--neon);transition:transform .22s var(--ease)}
.card-neon:hover .card-foot i{transform:translateX(4px)}

.cta-band{
  position:relative;overflow:hidden;
  border:1px solid rgba(35,230,160,.25);border-radius:var(--r-xl);
  background:linear-gradient(135deg,rgba(35,230,160,.08),rgba(7,10,12,0) 58%),var(--bg-1);
  padding:44px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,230,160,.18),rgba(35,230,160,0) 70%);pointer-events:none;
}
.cta-band h2{font-size:27px;margin-bottom:10px}
.cta-band p{margin:0;color:var(--t3);font-size:14.5px;max-width:56ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}
.cta-note{margin-top:26px;text-align:center;font-size:13px;color:var(--t3)}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:64px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{font-size:20px;margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:var(--t3);line-height:1.85;margin:0;max-width:44ch}
.footer-col h4{
  font-size:14px;color:var(--neon);letter-spacing:.06em;margin-bottom:18px;
  display:flex;align-items:center;gap:8px;
}
.footer-col h4::before{content:"";width:14px;height:2px;background:var(--neon);border-radius:2px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:13.5px;color:var(--t2)}
.footer-col a:hover{color:var(--neon)}
.footer-col .plain{font-size:13.5px;color:var(--t3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:20px 0 24px;font-size:13px;color:var(--t3);
}
.end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(35,230,160,.9)}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:36px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-neon{display:none}
  .header-inner{height:60px;gap:14px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  .article-hero h1{font-size:34px}
  .article-body{padding:28px 24px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:56px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:32px 26px}
}
@media (max-width:767px){
  .article-hero{padding:40px 0 24px}
  .article-hero h1{font-size:28px}
  .article-content{font-size:16px}
  .article-content h2{font-size:22px}
  .article-content h3{font-size:18px}
  .grid-3{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn-neon,.cta-actions .btn-ghost{flex:1 1 100%}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .footer-grid{grid-template-columns:1fr}
  .crumb .current{white-space:normal;max-width:100%}
  .article-body{padding:22px 18px 26px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-s:8px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:20px;
  --shadow:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35),0 10px 34px -12px rgba(35,230,160,.45);
  --container:1200px;

  --bs-body-bg:#070A0C;
  --bs-body-color:#A6B4B8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#EAF2F0;
  --bs-link-hover-color:#23E6A0;
  --bs-primary-rgb:35,230,160;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--t1);text-decoration:none;transition:color .22s cubic-bezier(.2,.7,.2,1),opacity .22s}
a:hover{color:var(--neon)}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-weight:700;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}
::selection{background:rgba(35,230,160,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;font-family:"Barlow","Oswald",system-ui,sans-serif}

/* ============ 顶部进度条 ============ */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--neon),var(--neon-deep));
  z-index:1200;box-shadow:0 0 12px rgba(35,230,160,.6);
  transition:width .12s linear;
}

/* ============ Header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1100;
  height:68px;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s,border-color .25s;
}
.site-header.is-scrolled{background:rgba(7,10,12,.96);border-bottom-color:rgba(35,230,160,.3)}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:baseline;gap:2px;font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--t1);white-space:nowrap}
.brand .brand-mark{color:var(--neon)}
.brand .brand-text{color:var(--t1);font-weight:500}
.brand:hover .brand-text{color:var(--neon)}

.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:inline-block;
  padding:10px 12px;font-size:15px;font-weight:500;color:var(--t2);
  border-radius:var(--r-s);
  transition:color .2s cubic-bezier(.2,.7,.2,1),background .2s;
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--neon);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s cubic-bezier(.2,.7,.2,1);
}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--neon);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 10px 2px rgba(35,230,160,.8);
}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-m);
  background:var(--neon);color:#04120C;font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:background .22s,box-shadow .22s,transform .22s;
}
.header-cta:hover{background:var(--neon-deep);color:#04120C;box-shadow:0 0 0 1px rgba(35,230,160,.4),0 10px 30px -10px rgba(35,230,160,.6);transform:translateY(-1px)}
.header-cta i{font-size:13px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-m);
  background:transparent;border:1px solid var(--line-strong);color:var(--t1);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}

/* Offcanvas */
.offcanvas.oc-neon{background:var(--bg-1);color:var(--t2);border-left:1px solid var(--line-strong);width:300px}
.oc-neon .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.oc-neon .offcanvas-title{font-size:17px;color:var(--t1)}
.oc-neon .offcanvas-body{padding:0}
.oc-list a{
  display:flex;align-items:center;height:48px;padding:0 20px;
  border-left:3px solid transparent;border-bottom:1px solid var(--line);
  color:var(--t2);font-size:15px;
}
.oc-list a:hover{background:rgba(255,255,255,.04);color:var(--t1)}
.oc-list a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.06)}
.oc-foot{padding:20px}

/* ============ 按钮 ============ */
.btn-neon,.btn-ghost,.btn-amber{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 26px;border-radius:var(--r-m);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s cubic-bezier(.2,.7,.2,1),color .22s,border-color .22s,box-shadow .22s,transform .22s;
}
.btn-neon{background:var(--neon);color:#04120C}
.btn-neon:hover{background:var(--neon-deep);color:#04120C;box-shadow:var(--glow);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--t1);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon);box-shadow:0 0 0 1px rgba(35,230,160,.25)}
.btn-amber{background:rgba(255,178,56,.12);color:var(--amber);border-color:rgba(255,178,56,.35)}
.btn-amber:hover{background:rgba(255,178,56,.2);color:var(--amber)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-neon i.arrow,.btn-ghost i.arrow{transition:transform .22s}
.btn-neon:hover i.arrow,.btn-ghost:hover i.arrow{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.chip{
  display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(35,230,160,.35);background:rgba(35,230,160,.07);
  color:var(--neon);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.chip-amber{border-color:rgba(255,178,56,.35);background:rgba(255,178,56,.08);color:var(--amber)}
.chip i{font-size:12px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;border:1px solid var(--line-strong);
  color:var(--t2);font-size:13px;background:rgba(255,255,255,.02);
}
.tag-amber{border-color:rgba(255,178,56,.3);color:var(--amber)}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg-1);margin-top:68px}
.crumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:16px 0;font-size:13px;color:var(--t3)}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--neon)}
.crumb .sep{color:#3A474C}
.crumb .cur{color:var(--neon)}

/* ============ Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:76px 0 84px;
  background-image:linear-gradient(180deg,rgba(7,10,12,.9) 0%,rgba(7,10,12,.82) 45%,rgba(7,10,12,.96) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  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;
  mask-image:radial-gradient(ellipse 70% 60% at 30% 20%,#000 12%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 30% 20%,#000 12%,transparent 72%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;top:-160px;left:-120px;width:620px;height:620px;
  background:radial-gradient(circle,rgba(35,230,160,.16) 0%,transparent 62%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-copy h1{
  font-size:46px;font-weight:800;letter-spacing:-.02em;line-height:1.14;
  margin:20px 0 18px;
}
.hero-copy h1 .accent{color:var(--neon)}
.hero-sub{font-size:17px;color:var(--t2);max-width:560px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stat{display:flex;flex-direction:column;gap:2px}
.hero-stat b{font-size:24px;color:var(--t1);font-weight:700}
.hero-stat span{font-size:13px;color:var(--t3);display:flex;align-items:center;gap:7px}
.hero-stat span::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 8px rgba(35,230,160,.8)}
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:var(--r-xl);overflow:hidden;
  border:1px solid rgba(35,230,160,.28);
  box-shadow:0 0 0 1px rgba(35,230,160,.12),0 30px 70px -30px rgba(0,0,0,.95);
  background:var(--surface);
}
.hero-visual .frame img{width:100%;height:360px;object-fit:cover}
.hero-visual .badge-float{
  position:absolute;left:-18px;bottom:-18px;
  background:rgba(12,17,20,.94);border:1px solid var(--line-strong);
  border-radius:var(--r-m);padding:12px 18px;backdrop-filter:blur(8px);
}
.hero-visual .badge-float b{display:block;color:var(--neon);font-size:19px}
.hero-visual .badge-float span{font-size:12px;color:var(--t3)}

/* ============ 快捷锚点 ============ */
.quick-bar{padding:22px 0;border-bottom:1px solid var(--line);background:var(--bg-1);position:sticky;top:68px;z-index:900;backdrop-filter:blur(8px)}
.quick-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.quick-label{font-size:13px;color:var(--t3);display:flex;align-items:center;gap:8px;margin-right:4px}
.quick-label i{color:var(--neon)}
.quick-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--t2);font-size:14px;
  background:rgba(255,255,255,.02);
  transition:all .22s cubic-bezier(.2,.7,.2,1);
}
.quick-pill:hover{border-color:var(--neon);color:var(--neon);background:rgba(35,230,160,.07);transform:translateY(-1px)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-sm{padding:72px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:600;color:var(--neon);letter-spacing:.06em;
  text-transform:uppercase;
}
.sec-eyebrow::before{content:"";width:18px;height:2px;background:var(--neon);border-radius:2px}
.sec-head h2{font-size:33px;font-weight:700;margin:14px 0 14px;letter-spacing:-.01em}
.sec-head p{font-size:16px;color:var(--t2);line-height:1.85}

/* ============ 功能卡网格 ============ */
.fn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.fn-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-l);padding:28px 26px 26px;
  transition:transform .24s cubic-bezier(.2,.7,.2,1),border-color .24s,box-shadow .24s,background .24s;
  overflow:hidden;
}
.fn-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:48px;
  background:linear-gradient(180deg,rgba(35,230,160,.08),transparent);
  opacity:0;transition:opacity .24s;
}
.fn-card:hover{transform:translateY(-3px);border-color:rgba(35,230,160,.42);background:var(--surface-2);box-shadow:var(--shadow)}
.fn-card:hover::before{opacity:1}
.fn-icon{
  position:relative;width:48px;height:48px;border-radius:var(--r-m);
  border:1px solid rgba(35,230,160,.35);background:rgba(35,230,160,.06);
  display:flex;align-items:center;justify-content:center;
  color:var(--neon);font-size:19px;margin-bottom:20px;
  transition:background .24s,border-color .24s;
}
.fn-card:hover .fn-icon{background:rgba(35,230,160,.16);border-color:rgba(35,230,160,.6)}
.fn-card h3{position:relative;font-size:20px;font-weight:650;margin-bottom:10px}
.fn-card p{position:relative;font-size:14.5px;color:var(--t2);line-height:1.82}
.fn-meta{
  position:relative;display:flex;align-items:center;gap:8px;margin-top:18px;
  padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);
}
.fn-meta i{color:var(--amber);font-size:12px}

/* ============ 流程时间线 ============ */
.flow-wrap{position:relative;padding-left:56px}
.flow-wrap::before{
  content:"";position:absolute;left:19px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--neon),rgba(35,230,160,.06));
}
.flow-item{position:relative;padding-bottom:40px}
.flow-item:last-child{padding-bottom:0}
.flow-dot{
  position:absolute;left:-56px;top:0;
  width:40px;height:40px;border-radius:50%;
  border:1px solid rgba(35,230,160,.42);background:var(--bg-0);
  display:flex;align-items:center;justify-content:center;
  color:var(--amber);font-size:14px;font-weight:700;
}
.flow-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px 26px;
  transition:border-color .24s,transform .24s,background .24s;
}
.flow-card:hover{border-color:rgba(35,230,160,.38);transform:translateX(3px);background:var(--surface-2)}
.flow-card h3{font-size:19px;margin-bottom:10px}
.flow-card p{font-size:14.5px;color:var(--t2);line-height:1.85}
.flow-tip{
  display:flex;gap:10px;align-items:flex-start;margin-top:16px;
  padding:12px 14px;border-radius:var(--r-s);
  background:rgba(255,178,56,.06);border-left:3px solid var(--amber);
  font-size:13.5px;color:#D9BC8C;
}
.flow-tip i{color:var(--amber);margin-top:5px;font-size:12px}

/* ============ 参数表卡 ============ */
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;
}
.spec-card-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 26px;border-bottom:1px solid var(--line)}
.spec-card-head h3{font-size:19px}
.spec-card-head span{font-size:13px;color:var(--t3)}
.spec-list{padding:8px 26px 22px}
.spec-row{
  display:grid;grid-template-columns:210px 1fr;gap:20px;
  padding:18px 0;border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:0}
.spec-key{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--t1);font-weight:600}
.spec-key .dot{width:6px;height:6px;border-radius:50%;background:var(--neon);flex:0 0 auto}
.spec-val{font-size:14.5px;color:var(--t2);line-height:1.82}

/* ============ 图文场景区 ============ */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.scene-img{
  border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.scene-img img{width:100%;height:400px;object-fit:cover}
.scene-list{margin-top:26px;display:flex;flex-direction:column;gap:16px}
.scene-list li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--t2);line-height:1.8}
.scene-list li i{color:var(--neon);margin-top:6px;font-size:14px}

/* ============ 提示卡三连 ============ */
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px}
.note-card{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--amber);
  border-radius:var(--r-s) var(--r-l) var(--r-l) var(--r-s);
  padding:24px 24px 22px;
  transition:background .24s,transform .24s;
}
.note-card:hover{background:var(--surface-2);transform:translateY(-2px)}
.note-card.risk-alert{border-left-color:var(--alert)}
.note-card.risk-neon{border-left-color:var(--neon)}
.note-card h4{font-size:17px;margin-bottom:10px}
.note-card p{font-size:14px;color:var(--t2);line-height:1.82}
.note-card .lvl{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--t3);margin-bottom:12px}
.note-card .lvl i{font-size:11px;color:var(--amber)}

/* ============ FAQ ============ */
.acc-neon .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m)!important;
  margin-bottom:14px;overflow:hidden;
}
.acc-neon .accordion-button{
  background:transparent;color:var(--t1);font-size:16px;font-weight:600;
  padding:20px 24px;border:0;box-shadow:none;
  transition:color .2s,background .2s;
}
.acc-neon .accordion-button:not(.collapsed){color:var(--neon);background:rgba(35,230,160,.05);box-shadow:inset 3px 0 0 var(--neon)}
.acc-neon .accordion-button:focus{box-shadow:none;outline:2px solid var(--neon);outline-offset:-2px}
.acc-neon .accordion-button::after{
  background-image:none;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--t3);width:auto;height:auto;transition:transform .24s,color .24s;
}
.acc-neon .accordion-button:not(.collapsed)::after{content:"\f068";color:var(--neon);transform:none}
.acc-neon .accordion-body{padding:4px 24px 22px;font-size:14.5px;color:var(--t2);line-height:1.9}

/* ============ CTA ============ */
.cta-box{
  position:relative;overflow:hidden;
  border:1px solid rgba(35,230,160,.25);border-radius:var(--r-xl);
  background:var(--surface);
  padding:56px 48px;
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.cta-box::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(35,230,160,.16),transparent 65%);pointer-events:none;
}
.cta-box h2{font-size:30px;letter-spacing:-.01em;margin-bottom:14px}
.cta-box p{font-size:15.5px;color:var(--t2);max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:14px;position:relative;z-index:2}
.cta-note{font-size:13px;color:var(--t3);text-align:center}

/* ============ Footer ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{font-size:22px;margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;max-width:340px}
.footer-col h4{
  display:flex;align-items:center;gap:9px;
  font-size:14px;color:var(--neon);font-weight:600;margin-bottom:20px;letter-spacing:.02em;
}
.footer-col h4::before{content:"";width:14px;height:2px;background:var(--neon);border-radius:2px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14px;color:var(--t2)}
.footer-col ul a:hover{color:var(--neon);padding-left:3px}
.footer-col .plain{font-size:14px;color:var(--t3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
.end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(35,230,160,.85)}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.fade-up.in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-copy h1{font-size:40px}
  .fn-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .nav-links,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-copy h1{font-size:34px}
  .hero-visual .frame img{height:300px}
  .fn-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr;gap:32px}
  .scene-img img{height:320px}
  .note-grid{grid-template-columns:1fr}
  .cta-box{grid-template-columns:1fr;padding:40px 28px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .section-sm{padding:56px 0}
  .sec-head h2{font-size:27px}
  .quick-bar{position:static}
  .spec-row{grid-template-columns:1fr;gap:8px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .crumb-bar{margin-top:60px}
  .site-header{height:60px}
  .header-inner{height:60px}
  .brand{font-size:18px}
  .cat-hero{padding:52px 0 60px}
  .hero-copy h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-stats{gap:22px}
  .fn-grid{grid-template-columns:1fr}
  .flow-wrap{padding-left:44px}
  .flow-wrap::before{left:15px}
  .flow-dot{left:-44px;width:32px;height:32px;font-size:12px}
  .cta-box h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .sec-head h2{font-size:24px}
  .hero-visual .badge-float{left:auto;right:12px;bottom:-14px}
}
@media (max-width:520px){
  .btn-neon,.btn-ghost{height:48px;padding:0 20px;font-size:14.5px;width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-stat b{font-size:20px}
  .scene-img img{height:250px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:18px;
  --r-xl:20px;
  --r-pill:999px;
  --shadow:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35), 0 10px 34px -12px rgba(35,230,160,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","Oswald",system-ui,sans-serif;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t2);
  --bs-border-color:var(--line);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--t1);
  --bs-primary-rgb:35,230,160;
  --bs-font-sans-serif:var(--font-cn);
  --bs-body-font-family:var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(35,230,160,.3);color:#fff;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(7,10,12,.95);border-bottom-color:rgba(35,230,160,.3);}
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;}
.scroll-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--neon),var(--amber));transition:width .12s linear;}
.header-inner{display:flex;align-items:center;gap:26px;height:68px;}
.brand{display:inline-flex;align-items:baseline;gap:2px;font-size:20px;font-weight:800;letter-spacing:-.015em;white-space:nowrap;}
.brand-mark{color:var(--t1);}
.brand-text{color:var(--neon);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;
  padding:9px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  border-radius:var(--r-sm);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--neon);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  width:4px;height:4px;
  margin-left:-2px;
  border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 8px var(--neon);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:rgba(255,255,255,.02);
  color:var(--t1);
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(35,230,160,.5);color:var(--neon);}

/* ---------- 按钮 ---------- */
.btn-neon,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:12px 22px;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .22s var(--ease),transform .2s var(--ease);
}
.btn-neon{background:var(--neon);color:#04140E;}
.btn-neon:hover{background:var(--neon-deep);color:#04140E;box-shadow:var(--glow);transform:translateY(-1px);}
.btn-neon svg,.btn-neon i{transition:transform .22s var(--ease);}
.btn-neon:hover i.fa-arrow-right{transform:translateX(3px);}
.btn-ghost{background:rgba(255,255,255,.02);border-color:var(--line-strong);color:var(--t1);}
.btn-ghost:hover{border-color:rgba(35,230,160,.5);color:var(--neon);background:rgba(35,230,160,.06);}
.btn-neon:active,.btn-ghost:active{transform:translateY(0);}
.btn-sm-neon{padding:9px 18px;font-size:14px;border-radius:12px;}
.btn-lg-neon{padding:0 28px;height:56px;font-size:16px;border-radius:var(--r-md);}

/* ---------- 抽屉导航 ---------- */
.drawer-neon{background:var(--bg-1) !important;border-left:1px solid var(--line) !important;color:var(--t2);width:320px !important;max-width:88vw;}
.drawer-neon .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer-neon .offcanvas-title{font-size:17px;font-weight:700;color:var(--t1);}
.drawer-neon .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.6;}
.drawer-neon .btn-close:hover{opacity:1;}
.drawer-body{padding:0;}
.drawer-link{
  display:flex;
  align-items:center;
  height:50px;
  padding:0 20px;
  font-size:15px;
  color:var(--t2);
  border-left:3px solid transparent;
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-link:hover{color:var(--t1);background:rgba(255,255,255,.03);}
.drawer-link.active{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.06);}
.drawer-cta{margin:22px 20px;display:flex;}
.drawer-cta .btn-neon{width:100%;}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 76px;
  background:var(--bg-1);
  border-bottom:1px solid var(--line);
}
.hero-media{position:absolute;inset:0;overflow:hidden;}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.26;filter:saturate(.75);}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(760px 340px at 18% 0%, rgba(35,230,160,.16), transparent 70%),
    linear-gradient(180deg, rgba(7,10,12,.72), rgba(7,10,12,.95));
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  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;
  opacity:.7;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t3);margin-bottom:22px;}
.crumb a{color:var(--t3);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--neon);}
.crumb .sep{color:var(--line-strong);}
.crumb .current{color:var(--t2);}
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(35,230,160,.35);
  background:rgba(35,230,160,.07);
  color:var(--neon);
  font-size:13px;
  letter-spacing:.02em;
}
.badge-pill i{font-size:9px;}
.page-hero h1{
  font-size:clamp(28px,4.2vw,46px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  margin:20px 0 16px;
  max-width:920px;
}
.hero-sub{max-width:730px;font-size:17px;line-height:1.8;color:var(--t2);}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-list{
  display:flex;flex-wrap:wrap;gap:16px 40px;
  margin-top:38px;padding-top:24px;
  border-top:1px solid var(--line);
}
.trust-list li{display:flex;align-items:baseline;gap:9px;font-size:14px;color:var(--t3);}
.trust-list strong{font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--t1);font-variant-numeric:tabular-nums;}

/* ---------- 通用板块 ---------- */
.section{padding:92px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.14em;
  color:var(--neon);text-transform:uppercase;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--neon);}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.01em;margin:14px 0 14px;}
.section-desc{font-size:16px;color:var(--t2);}
.bg-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- 图文交替行 ---------- */
.alt-rows{display:flex;flex-direction:column;}
.alt-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:52px;
  align-items:center;
  padding:38px 0;
}
.alt-row + .alt-row{border-top:1px solid var(--line);}
.alt-row.reverse .alt-media{order:2;}
.alt-media{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow);
}
.alt-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease);}
.alt-media:hover img{transform:scale(1.03);}
.alt-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(7,10,12,0) 42%, rgba(7,10,12,.6));
  pointer-events:none;
}
.step-tag{
  position:absolute;left:16px;top:16px;z-index:2;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:rgba(7,10,12,.78);
  border:1px solid rgba(255,178,56,.5);
  color:var(--amber);
  font-size:12.5px;
  font-family:var(--font-num);
  letter-spacing:.06em;
}
.alt-body h3{font-size:22px;font-weight:650;margin-bottom:14px;}
.alt-body p{font-size:15.5px;}
.check-list{display:grid;gap:10px;margin:18px 0 22px;}
.check-list li{position:relative;padding-left:22px;font-size:15px;color:var(--t2);}
.check-list li::before{
  content:"";
  position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 10px rgba(35,230,160,.6);
}
.arrow-chain{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
}
.arrow-chain span{
  padding:4px 11px;
  border-radius:var(--r-pill);
  border:1px solid rgba(35,230,160,.25);
  background:rgba(35,230,160,.08);
  color:var(--t1);
  font-size:13.5px;
}
.arrow-chain i{color:var(--neon);font-size:11px;}

/* ---------- 登录方式卡片 ---------- */
.method-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.method-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 24px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.method-card:hover{transform:translateY(-3px);border-color:rgba(35,230,160,.4);background:var(--surface-2);box-shadow:var(--shadow);}
.method-icon{
  width:48px;height:48px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid rgba(35,230,160,.35);
  background:rgba(35,230,160,.08);
  color:var(--neon);
  font-size:19px;
}
.method-card h3{margin:18px 0 10px;font-size:19px;font-weight:650;}
.method-card p{font-size:15px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  padding:4px 11px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  font-size:12.5px;
  color:var(--t2);
}
.tag.neon{color:var(--neon);border-color:rgba(35,230,160,.35);background:rgba(35,230,160,.07);}
.tag.amber{color:var(--amber);border-color:rgba(255,178,56,.35);background:rgba(255,178,56,.07);}

/* ---------- 流程线 ---------- */
.flow-line{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;}
.flow-step{
  position:relative;
  padding:28px 22px 0 0;
  border-top:2px solid var(--line);
}
.flow-step::before{
  content:"";
  position:absolute;top:-9px;left:0;
  width:16px;height:16px;
  border-radius:50%;
  background:var(--bg-0);
  border:2px solid rgba(35,230,160,.55);
  box-shadow:0 0 0 4px rgba(35,230,160,.1);
}
.flow-step:first-child{border-top-color:rgba(35,230,160,.7);}
.flow-step:first-child::before{background:var(--neon);border-color:var(--neon);box-shadow:0 0 0 5px rgba(35,230,160,.16);}
.flow-step .step-num{font-family:var(--font-num);font-size:13px;color:var(--amber);letter-spacing:.14em;font-variant-numeric:tabular-nums;}
.flow-step h3{font-size:17px;font-weight:650;margin:8px 0 8px;}
.flow-step p{font-size:14.5px;color:var(--t2);}

/* ---------- 状态处理卡 ---------- */
.status-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.status-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--amber);
  border-radius:var(--r-md);
  padding:26px 24px;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.status-card:hover{transform:translateY(-3px);background:var(--surface-2);}
.status-card h3{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:650;margin-bottom:10px;}
.status-card h3 i{color:var(--amber);font-size:15px;}
.status-card p{font-size:15px;}
.status-fix{
  margin-top:16px;padding-top:14px;
  border-top:1px dashed var(--line-strong);
  font-size:14.5px;color:var(--t2);
}
.status-fix strong{color:var(--neon);font-weight:600;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.acc-neon .accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md) !important;
  margin-bottom:14px;
  overflow:hidden;
}
.acc-neon .accordion-button{
  background:transparent;
  border:0;
  box-shadow:none;
  color:var(--t1);
  font-size:16.5px;
  font-weight:600;
  padding:20px 54px 20px 22px;
  line-height:1.6;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.acc-neon .accordion-button:hover{color:var(--neon);}
.acc-neon .accordion-button:not(.collapsed){
  color:var(--neon);
  background:rgba(35,230,160,.05);
  box-shadow:inset 3px 0 0 var(--neon);
}
.acc-neon .accordion-button:focus{box-shadow:none;border-color:transparent;}
.acc-neon .accordion-button::after{
  content:"";
  position:absolute;
  right:24px;top:50%;
  width:10px;height:10px;
  margin:0;
  background:none;
  border-right:2px solid var(--neon);
  border-bottom:2px solid var(--neon);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .24s var(--ease);
}
.acc-neon .accordion-button:not(.collapsed)::after{transform:translateY(-30%) rotate(-135deg);}
.acc-neon .accordion-body{
  padding:2px 24px 24px;
  font-size:15.5px;
  color:var(--t2);
  border-left:3px solid var(--neon);
}

/* ---------- CTA 区 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:48px;
  border:1px solid rgba(35,230,160,.25);
  border-radius:24px;
  background:
    radial-gradient(520px 220px at 12% 0%, rgba(35,230,160,.12), transparent 70%),
    linear-gradient(135deg, rgba(35,230,160,.08), rgba(7,10,12,.4) 48%, rgba(255,178,56,.06));
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.cta-band p{max-width:580px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:66px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:44px;}
.footer-brand .brand{font-size:19px;}
.footer-brand p{margin-top:16px;font-size:14.5px;color:var(--t3);max-width:350px;line-height:1.8;}
.footer-col h4{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:600;
  color:var(--neon);
  margin-bottom:18px;
}
.footer-col h4::before{content:"";width:14px;height:1px;background:var(--neon);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:var(--t2);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--neon);}
.footer-col .plain{font-size:14.5px;color:var(--t3);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:50px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13.5px;color:var(--t3);
}
.end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(35,230,160,.8);flex:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .alt-row{gap:40px;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm-neon{display:none;}
  .section{padding:72px 0;}
  .alt-row{grid-template-columns:1fr;gap:26px;padding:32px 0;}
  .alt-row.reverse .alt-media{order:0;}
  .method-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-line{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:34px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
}
@media (max-width:767.98px){
  .section{padding:62px 0;}
  .page-hero{padding:40px 0 58px;}
  .hero-sub{font-size:16px;}
  .method-grid,.status-grid,.flow-line,.footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .acc-neon .accordion-button{font-size:15.5px;padding:17px 48px 17px 18px;}
  .acc-neon .accordion-body{padding:2px 18px 20px;}
}
@media (max-width:519.98px){
  .container{padding:0 18px;}
  .header-inner{height:60px;gap:12px;}
  .brand{font-size:18px;}
  .page-hero h1{font-size:27px;}
  .trust-list{gap:14px 26px;}
  .trust-list strong{font-size:21px;}
  .btn-neon,.btn-ghost{padding:11px 18px;font-size:14.5px;}
  .hero-cta a{width:100%;}
  .method-card,.status-card{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
}

/* roulang page: category4 */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-s:8px;
  --r-m:14px;
  --r-l:18px;
  --r-xl:20px;
  --r-p:999px;
  --shadow:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35), 0 10px 34px -12px rgba(35,230,160,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t2);
  --bs-border-color:var(--line);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--neon-deep);
  --bs-primary-rgb:35,230,160;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--neon);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--neon-deep)}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus{outline:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;font-family:"Barlow","Oswald",system-ui,sans-serif}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(7,10,12,.96);border-bottom-color:rgba(35,230,160,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:baseline;gap:2px;font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--t1)}
.brand:hover{color:var(--t1)}
.brand-mark{color:var(--neon)}
.brand-text{color:var(--t1)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--neon)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active::before{
  content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 8px rgba(35,230,160,.9);
}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-m);
  background:var(--neon);color:#06231A;font-size:14px;font-weight:700;
  border:1px solid rgba(35,230,160,.6);white-space:nowrap;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.header-cta:hover{background:var(--neon-deep);color:#04170F;box-shadow:var(--glow);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:transparent;border:1px solid var(--line-strong);color:var(--t1);
  font-size:18px;line-height:1;cursor:pointer;
  transition:border-color .22s var(--ease),color .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}

/* ---------- buttons ---------- */
.btn-neon,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 26px;border-radius:var(--r-m);
  font-size:16px;font-weight:700;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-neon{background:var(--neon);border:1px solid rgba(35,230,160,.65);color:#06231A}
.btn-neon:hover{background:var(--neon-deep);color:#04170F;box-shadow:var(--glow);transform:translateY(-2px)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--t1)}
.btn-ghost:hover{border-color:rgba(35,230,160,.6);color:var(--neon);transform:translateY(-2px)}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px}

/* ---------- badges ---------- */
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-p);
  border:1px solid rgba(35,230,160,.4);
  background:rgba(35,230,160,.08);
  color:var(--neon);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-amber{border-color:rgba(255,178,56,.45);background:rgba(255,178,56,.1);color:var(--amber)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--neon);display:inline-block}


/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  padding:78px 0 68px;
  background-image:linear-gradient(180deg,rgba(7,10,12,.72),rgba(7,10,12,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(35,230,160,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(35,230,160,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(circle at 22% 30%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 22% 30%,#000 0%,transparent 72%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:22px}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--neon)}
.crumb .sep{color:var(--t3)}
.crumb .cur{color:var(--t3)}
.cat-hero h1{font-size:clamp(28px,4.4vw,48px);font-weight:800;line-height:1.16;letter-spacing:-.02em;margin:18px 0 18px}
.cat-hero h1 em{font-style:normal;color:var(--neon)}
.cat-hero .lede{max-width:640px;font-size:17px;color:var(--t2);margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.hero-facts li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2)}
.hero-facts b{color:var(--t1);font-size:20px;font-weight:800}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.25;margin-bottom:14px}
.sec-head p{color:var(--t2);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--neon);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--neon)}

/* ---------- overview ---------- */
.overview-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
.overview-text{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:34px}
.overview-text h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px}
.overview-text p:last-child{margin-bottom:0}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.stat{cart}
.stat{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-m);padding:18px}
.stat .val{font-size:26px;font-weight:800;color:var(--neon);line-height:1.2}
.stat .lab{font-size:13px;color:var(--t3);margin-top:4px}
.overview-media{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);min-height:280px}
.overview-media img{width:100%;height:100%;min-height:280px;object-fit:cover}
.overview-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,12,0) 40%,rgba(7,10,12,.85))}
.overview-media .cap{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;font-size:14px;color:var(--t1)}

/* ---------- spec table ---------- */
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--shadow);
}
.spec-card-head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:24px 28px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(35,230,160,.06),transparent);
}
.spec-card-head h3{font-size:20px}
.spec-card-head span{font-size:13px;color:var(--t3)}
.spec-row{display:grid;grid-template-columns:260px 1fr;gap:24px;padding:18px 28px;border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:none}
.spec-row:hover{background:rgba(35,230,160,.035)}
.spec-key{color:var(--t1);font-weight:600}
.spec-val{color:var(--t2);font-size:15px}
.spec-val .k{color:var(--neon);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- risk cards ---------- */
.risk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.risk-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-left:3px solid var(--line-strong);border-radius:var(--r-l);
  padding:26px 26px 24px;
  transition:transform .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.risk-card:hover{transform:translateY(-3px);background:var(--surface-2);border-color:rgba(35,230,160,.4)}
.risk-card h3{font-size:19px;margin:14px 0 12px}
.risk-card p{font-size:15px;margin-bottom:16px}
.risk-card ul li{position:relative;padding-left:16px;font-size:14px;color:var(--t2);margin-bottom:8px}
.risk-card ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;background:var(--neon);border-radius:1px}
.risk-card.lv-low{border-left-color:var(--neon)}
.risk-card.lv-mid{border-left-color:var(--amber)}
.risk-card.lv-high{border-left-color:var(--alert)}
.risk-card.lv-mid ul li::before{background:var(--amber)}
.risk-card.lv-high ul li::before{background:var(--alert)}
.lv-tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.08em;padding:4px 12px;border-radius:var(--r-p);border:1px solid var(--line-strong);color:var(--t2)}
.lv-low .lv-tag{border-color:rgba(35,230,160,.5);color:var(--neon);background:rgba(35,230,160,.08)}
.lv-mid .lv-tag{border-color:rgba(255,178,56,.5);color:var(--amber);background:rgba(255,178,56,.08)}
.lv-high .lv-tag{border-color:rgba(255,92,108,.5);color:var(--alert);background:rgba(255,92,108,.08)}


/* ---------- flow ---------- */
.flow{position:relative;padding-left:26px}
.flow::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--neon),rgba(35,230,160,.1))}
.flow-step{position:relative;padding:0 0 32px 30px}
.flow-step:last-child{padding-bottom:0}
.flow-step::before{
  content:"";position:absolute;left:-26px;top:4px;
  width:32px;height:32px;border-radius:50%;
  background:var(--bg-0);border:1px solid rgba(35,230,160,.5);
  box-shadow:0 0 0 6px rgba(35,230,160,.06);
}
.flow-step .no{
  position:absolute;left:-20px;top:9px;
  font-size:12px;font-weight:800;color:var(--amber);letter-spacing:.04em;
}
.flow-step h3{font-size:19px;margin-bottom:8px}
.flow-step p{margin-bottom:0;font-size:15px}
.flow-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}

/* ---------- records panel ---------- */
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);padding:30px;
}
.panel h3{font-size:20px;margin-bottom:18px}
.rec-list li{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.rec-list li:last-child{border-bottom:none}
.rec-list .dev{color:var(--t1);font-weight:600;font-size:15px}
.rec-list .meta{font-size:13px;color:var(--t3)}
.rec-list .tag{font-size:12px;padding:3px 10px;border-radius:var(--r-p);border:1px solid rgba(35,230,160,.45);color:var(--neon)}
.rec-list .tag.warn{border-color:rgba(255,178,56,.45);color:var(--amber)}
.two-panel{display:grid;grid-template-columns:1fr 1fr;gap:24px}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.acc-neon .accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line)}
.acc-neon .accordion-item:first-of-type{border-top:1px solid var(--line)}
.acc-neon .accordion-button{
  background:transparent;color:var(--t1);font-size:17px;font-weight:650;
  padding:22px 44px 22px 0;box-shadow:none;border-radius:0;
  transition:color .22s var(--ease),padding .22s var(--ease);
}
.acc-neon .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:400;color:var(--neon);
  transition:transform .26s var(--ease);margin-left:auto;
}
.acc-neon .accordion-button:not(.collapsed){color:var(--neon);box-shadow:none;padding-left:16px}
.acc-neon .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg)}
.acc-neon .accordion-button:focus{box-shadow:none}
.acc-neon .accordion-button:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.acc-neon .accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;background:var(--neon);border-radius:2px;
}
.acc-neon .accordion-button{position:relative}
.acc-neon .accordion-body{padding:0 44px 24px 0;color:var(--t2);font-size:15px;line-height:1.9}
.acc-neon .accordion-body p:last-child{margin-bottom:0}


/* ---------- cta ---------- */
.cta-band{
  position:relative;border:1px solid rgba(35,230,160,.25);border-radius:var(--r-xl);
  padding:52px 40px;text-align:center;overflow:hidden;
  background:radial-gradient(circle at 50% 0%,rgba(35,230,160,.12),transparent 62%),var(--surface);
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:14px}
.cta-band p{max-width:600px;margin:0 auto 26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-note{font-size:13px;color:var(--t3);margin-top:18px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{font-size:19px;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;max-width:340px}
.footer-col h4{
  font-size:14px;color:var(--neon);font-weight:700;letter-spacing:.06em;
  margin-bottom:18px;display:flex;align-items:center;gap:8px;
}
.footer-col h4::before{content:"";width:14px;height:1px;background:var(--neon)}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--t2)}
.footer-col a:hover{color:var(--neon)}
.footer-col .plain{font-size:14px;color:var(--t3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:20px 0 26px;font-size:13px;color:var(--t3);
}
.end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px rgba(35,230,160,.8)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .nav-links{gap:18px}
  .nav-links a{font-size:14px}
}
@media (max-width:991.98px){
  .site-header .header-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-links{
    position:fixed;top:68px;right:0;bottom:0;width:min(320px,84vw);
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(9,13,16,.98);backdrop-filter:blur(14px);
    border-left:1px solid var(--line);
    padding:12px 0 28px;overflow-y:auto;
    transform:translateX(102%);transition:transform .3s var(--ease);
    box-shadow:-24px 0 60px -30px rgba(0,0,0,.9);
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{
    padding:14px 24px;height:48px;display:flex;align-items:center;
    border-bottom:1px solid var(--line);border-left:3px solid transparent;
  }
  .nav-links a::after{display:none}
  .nav-links a.active{border-left-color:var(--neon);background:rgba(35,230,160,.06)}
  .nav-links a.active::before{display:none}
  .overview-grid{grid-template-columns:1fr}
  .flow-wrap{grid-template-columns:1fr;gap:44px}
  .risk-grid{grid-template-columns:1fr 1fr}
  .two-panel{grid-template-columns:1fr}
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .cat-hero{padding:56px 0 48px}
  .hero-facts{gap:20px}
  .hero-facts li{font-size:13px}
  .hero-facts b{font-size:17px}
  .stat-row{grid-template-columns:1fr 1fr}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:16px 20px}
  .spec-card-head{padding:20px}
  .risk-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .cta-band{padding:38px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .overview-text{padding:24px}
  .panel{padding:22px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .header-inner{height:60px}
  .nav-links{top:60px}
  .brand{font-size:18px}
  .stat-row{grid-template-columns:1fr}
  .btn-neon,.btn-ghost{width:100%;min-height:50px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .cta-actions{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --bg-0:#070A0C;
  --bg-1:#0C1114;
  --surface:#111A1D;
  --surface-2:#162126;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#23E6A0;
  --neon-deep:#0FA878;
  --amber:#FFB238;
  --alert:#FF5C6C;
  --t1:#EAF2F0;
  --t2:#A6B4B8;
  --t3:#6D7C82;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:18px;
  --r-xl:20px;
  --r-pill:999px;
  --shadow-card:0 24px 60px -32px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(35,230,160,.35),0 10px 34px -12px rgba(35,230,160,.45);
  --ease:cubic-bezier(.2,.7,.2,1);

  --bs-body-bg:#070A0C;
  --bs-body-color:#A6B4B8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#23E6A0;
  --bs-link-hover-color:#5CF3BF;
  --bs-primary-rgb:35,230,160;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);font-weight:700;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
::selection{background:rgba(35,230,160,.28);color:#fff}

.container,.container-fluid{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto}
.row{--bs-gutter-x:24px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ===== 滚动进度 ===== */
.scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:1080;
  background:linear-gradient(90deg,var(--neon),var(--amber));
  box-shadow:0 0 14px rgba(35,230,160,.6);
}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(7,10,12,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(7,10,12,.97);border-bottom-color:rgba(35,230,160,.3)}
.header-inner{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:baseline;font-size:20px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{color:var(--neon)}
.brand-text{color:var(--t1)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 12px;font-size:15px;font-weight:500;color:var(--t2);
  border-radius:var(--r-sm);white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--neon)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active::before{
  content:"";position:absolute;top:1px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 8px var(--neon);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.btn-neon{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:52px;padding:0 26px;border-radius:var(--r-md);
  background:var(--neon);color:#05140D;font-size:16px;font-weight:700;
  border:1px solid var(--neon);cursor:pointer;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.btn-neon:hover{background:var(--neon-deep);border-color:var(--neon-deep);color:#03130C;box-shadow:var(--glow);transform:translateY(-1px)}
.btn-neon:active{transform:translateY(0)}
.btn-neon.sm{height:42px;padding:0 20px;font-size:15px;border-radius:12px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:52px;padding:0 24px;border-radius:var(--r-md);
  border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
  color:var(--t1);font-size:15.5px;font-weight:600;cursor:pointer;
  transition:border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon);background:rgba(35,230,160,.06);transform:translateY(-1px)}
.btn-ghost.sm{height:42px;padding:0 18px;font-size:14.5px;border-radius:12px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);background:transparent;color:var(--t1);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}

.nav-offcanvas{background:var(--bg-1);color:var(--t2);border-left:1px solid var(--line);width:300px}
.nav-offcanvas .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-title{font-size:17px;color:var(--t1);font-weight:700}
.nav-offcanvas .offcanvas-body{padding:8px 0 24px;display:flex;flex-direction:column}
.m-nav a{
  display:flex;align-items:center;height:48px;padding:0 20px;font-size:15.5px;color:var(--t2);
  border-left:3px solid transparent;border-bottom:1px solid var(--line);
}
.m-nav a:hover{color:var(--t1);background:rgba(255,255,255,.03)}
.m-nav a.active{color:var(--neon);border-left-color:var(--neon);background:rgba(35,230,160,.06)}
.m-cta{padding:20px}

/* ===== Hero ===== */
.page-hero{position:relative;padding:168px 0 88px;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.32;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(760px 380px at 18% 8%,rgba(35,230,160,.22),transparent 68%),
    linear-gradient(180deg,rgba(7,10,12,.72) 0%,rgba(7,10,12,.9) 58%,var(--bg-0) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,#000,transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.page-hero .container{position:relative;z-index:2}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:24px;font-size:14px;color:var(--t3)}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--neon)}
.crumb li+li::before{content:"/";margin-right:8px;color:var(--t3)}
.crumb li[aria-current]{color:var(--t3)}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(35,230,160,.4);color:var(--neon);
  font-size:13.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(35,230,160,.07);margin-bottom:24px;
}
.hero-badge i{font-size:12px}
.page-hero h1{
  font-size:clamp(30px,4.6vw,50px);font-weight:800;letter-spacing:-.02em;line-height:1.12;
  max-width:900px;margin-bottom:22px;
}
.page-hero h1 .hl{color:var(--neon)}
.hero-sub{font-size:17px;color:var(--t2);max-width:660px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.hero-stats div{display:flex;flex-direction:column;gap:2px}
.hero-stats .k{font-size:24px;font-weight:800;color:var(--t1);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.hero-stats .v{font-size:13.5px;color:var(--t3)}

/* ===== 板块通用 ===== */
.section{padding:96px 0;position:relative}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;font-weight:600;color:var(--neon);letter-spacing:.06em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--neon);border-radius:2px}
.section-head h2{font-size:clamp(26px,3.2vw,34px);font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--t2);line-height:1.85}
.section-head.with-aside{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.more-link{font-size:15px;color:var(--neon);display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.more-link:hover{color:#5CF3BF}
.more-link i{font-size:12px;transition:transform .22s var(--ease)}
.more-link:hover i{transform:translateX(4px)}

/* ===== 快捷胶囊 ===== */
.quick-pills{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:52px}
.pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line-strong);
  font-size:15px;font-weight:600;color:var(--t1);
}
.pill i{color:var(--neon);font-size:14px}
.pill:hover{border-color:var(--neon);color:var(--neon);box-shadow:var(--glow);transform:translateY(-2px)}

/* ===== 自查顺序 ===== */
.check-wrap{display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start}
.check-figure{position:sticky;top:108px}
.check-figure img{width:100%;height:400px;object-fit:cover;border-radius:var(--r-xl);border:1px solid var(--line)}
.check-figure .cap{margin-top:16px;font-size:13.5px;color:var(--t3);line-height:1.8}
.step-list{position:relative;padding-left:0}
.step{position:relative;padding:0 0 34px 68px;border-left:2px solid rgba(35,230,160,.22);margin-left:20px}
.step:last-child{border-left-color:transparent;padding-bottom:0}
.step .idx{
  position:absolute;left:-21px;top:-2px;
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-1);border:1px solid rgba(35,230,160,.45);
  color:var(--amber);font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;
}
.step h3{font-size:19px;font-weight:650;margin-bottom:10px;color:var(--t1)}
.step p{font-size:15.5px;color:var(--t2);line-height:1.85}

/* ===== FAQ 手风琴 ===== */
.faq-group{margin-bottom:72px}
.faq-group:last-child{margin-bottom:0}
.faq-group-head{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:28px}
.faq-group-head h2{font-size:clamp(24px,3vw,32px);font-weight:700}
.faq-group-head .tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,178,56,.4);color:var(--amber);
  font-size:13px;font-weight:600;background:rgba(255,178,56,.07);
}
.faq-group-head p{width:100%;font-size:15.5px;color:var(--t3);max-width:720px;margin-top:4px}

.acc-neon{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent}
.acc-neon .accordion-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);margin-bottom:16px;overflow:hidden;
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.acc-neon .accordion-item:hover{border-color:rgba(35,230,160,.35)}
.acc-neon .accordion-header{margin:0}
.acc-neon .accordion-button{
  display:flex;align-items:flex-start;gap:14px;
  width:100%;padding:20px 22px;
  background:transparent;color:var(--t1);
  font-size:16.5px;font-weight:650;line-height:1.55;
  box-shadow:none;border:0;
}
.acc-neon .accordion-button:not(.collapsed){
  color:var(--neon);
  background:rgba(35,230,160,.06);
  box-shadow:inset 3px 0 0 var(--neon);
}
.acc-neon .accordion-button:focus{box-shadow:none;outline:none}
.acc-neon .accordion-button:focus-visible{outline:2px solid var(--neon);outline-offset:-2px}
.acc-neon .accordion-button::after{
  content:"";background-image:none !important;
  width:9px;height:9px;flex:0 0 auto;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg);margin:8px 4px 0 auto;
  transition:transform .25s var(--ease);
}
.acc-neon .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:12px}
.q-index{
  color:var(--amber);font-size:14px;font-weight:800;
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
  padding-top:2px;flex:0 0 auto;
}
.acc-neon .accordion-body{
  padding:4px 22px 24px 56px;color:var(--t2);font-size:15.5px;line-height:1.9;
  border-top:1px solid transparent;
}
.acc-neon .accordion-body p+p{margin-top:12px}
.acc-neon .accordion-body .hint{
  display:block;margin-top:14px;padding:12px 16px;
  border-left:3px solid var(--amber);border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:rgba(255,178,56,.07);color:#E7C489;font-size:14.5px;line-height:1.8;
}
.faq-note{
  margin-top:26px;padding:18px 22px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--surface);
  font-size:14.5px;color:var(--t3);line-height:1.85;
}
.faq-note strong{color:var(--t1);font-weight:650}

/* ===== 图文支持区 ===== */
.support-grid{display:grid;grid-template-columns:1.05fr 0.95fr;gap:56px;align-items:center}
.support-media img{width:100%;height:380px;object-fit:cover;border-radius:var(--r-xl);border:1px solid var(--line-strong)}
.support-body h2{font-size:clamp(25px,3.1vw,33px);margin-bottom:18px}
.support-body p{font-size:16px;line-height:1.9;margin-bottom:16px}
.prep-list{margin-top:26px;display:grid;gap:14px}
.prep-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--t2)}
.prep-list i{color:var(--neon);font-size:14px;margin-top:6px;flex:0 0 auto}
.support-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.chip{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);
  font-size:14px;color:var(--t2);
}
.chip i{color:var(--amber);font-size:13px}

/* ===== CTA 条 ===== */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid rgba(35,230,160,.25);border-radius:var(--r-xl);
  background:linear-gradient(140deg,rgba(35,230,160,.09),rgba(255,178,56,.05) 58%,transparent);
  padding:52px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(24px,3vw,32px);margin-bottom:12px}
.cta-band p{font-size:15.5px;color:var(--t2);max-width:600px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .brand{font-size:19px;margin-bottom:16px}
.footer-brand p{font-size:14.5px;color:var(--t3);line-height:1.9;max-width:340px}
.footer-col h4{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:600;color:var(--neon);letter-spacing:.04em;margin-bottom:18px;
}
.footer-col h4::before{content:"";width:14px;height:2px;background:var(--neon);border-radius:2px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14.5px;color:var(--t2);display:inline-block}
.footer-col a:hover{color:var(--neon);transform:translateX(3px)}
.footer-col .plain{font-size:14.5px;color:var(--t3)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--t3);
}
.end-dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 10px var(--neon);flex:0 0 auto}

/* ===== 动效 ===== */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.fade-up.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .fade-up{opacity:1;transform:none}
}

/* ===== 响应式 ===== */
@media (max-width:1399.98px){
  .nav-links a{padding:10px 10px;font-size:14.5px}
}
@media (max-width:1199.98px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions{margin-left:auto}
  .check-wrap{grid-template-columns:1fr;gap:40px}
  .check-figure{position:static}
  .check-figure img{height:320px}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .page-hero{padding:132px 0 68px}
  .support-grid{grid-template-columns:1fr;gap:36px}
  .support-media img{height:300px}
  .cta-band{padding:38px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
  .footer-brand p{max-width:none}
  .site-footer{padding:56px 0 0;margin-top:72px}
  .acc-neon .accordion-body{padding-left:22px}
}
@media (max-width:767.98px){
  .header-inner{height:60px}
  .site-header .brand{font-size:18px}
  .btn-neon.sm,.btn-ghost.sm{display:none}
  .page-hero{padding:116px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn-neon,.hero-actions .btn-ghost{width:100%}
  .hero-stats{gap:24px;margin-top:32px}
  .section-head{margin-bottom:32px}
  .section-head.with-aside{flex-direction:column;align-items:flex-start}
  .quick-pills{gap:10px;margin-bottom:36px}
  .pill{padding:10px 16px;font-size:14.5px}
  .step{padding-left:58px}
  .step h3{font-size:17.5px}
  .cta-band{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-neon,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:519.98px){
  .container,.container-fluid{padding-left:16px;padding-right:16px}
  .page-hero h1{font-size:27px}
  .acc-neon .accordion-button{font-size:15.5px;padding:18px}
  .acc-neon .accordion-body{font-size:15px;padding:0 18px 20px 18px}
  .check-figure img{height:240px}
  .support-media img{height:220px}
}