/* roulang page: index */
:root{
  --brand:#6D4AFF;
  --accent:#C6FF3D;
  --shell:#0B0D12;
  --shell-2:#141824;
  --surface:#FFFFFF;
  --surface-2:#F4F5F8;
  --ink:#F5F6FA;
  --ink-2:#A7ADBB;
  --ink-dark:#14161C;
  --ink-dark-2:#5A6270;
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5A5F;
  --radius-card:18px;
  --radius-inner:12px;
  --radius-pill:999px;
  --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-light:0 12px 32px -16px rgba(16,18,24,.18);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.07);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--shell);
  color:var(--ink);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.004em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none}
h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(109,74,255,.55);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:rgba(255,255,255,.03)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.24)}

/* ---------- 布局骨架 ---------- */
.content{margin-left:260px;min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-tight{padding:72px 0}

/* ---------- 左侧导航 ---------- */
.side{
  position:fixed;top:0;left:0;bottom:0;width:260px;z-index:60;
  background:var(--shell-2);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  overflow-y:auto;
}
.side-logo{margin-bottom:26px;padding:0 8px}
.logo{display:flex;flex-direction:column;gap:2px}
.logo-mark{font-size:20px;font-weight:700;color:#fff;letter-spacing:.01em;line-height:1.3}
.logo-sub{font-size:12px;letter-spacing:.16em;color:var(--ink-2);line-height:1.4}
.logo:hover .logo-mark{color:var(--accent)}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 16px;border-radius:10px;
  color:var(--ink-2);font-size:15px;transition:background .18s ease,color .18s ease,transform .18s ease;
}
.nav-item svg{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:1.6}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--ink)}
.nav-item:active{transform:translateY(1px)}
.nav-item:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.nav-item.active{background:rgba(109,74,255,.16);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--accent);
}
.side-divider{height:1px;background:var(--line-soft);margin:22px 8px}
.side-card{
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--radius-inner);padding:16px;margin:0 4px;
}
.side-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-2);padding:4px 0}
.side-row strong{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.side-card .btn{margin-top:12px}
.side-foot{margin-top:auto;padding:18px 8px 0;font-size:12px;line-height:1.7;color:#6C7382}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{display:none}
.mobile-drawer{display:none}
.mobile-bar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--shell);border-bottom:1px solid var(--line);
}
.mobile-bar .logo-mark{font-size:17px}
.mobile-bar .logo-sub{font-size:10px;letter-spacing:.12em}
.hamburger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;transition:.18s ease;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.hamburger:hover{background:rgba(255,255,255,.06)}
.hamburger:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.mobile-drawer{
  position:fixed;top:60px;left:0;right:0;bottom:0;z-index:79;
  background:var(--shell);padding:20px 16px 40px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.mobile-drawer .nav-item{height:48px;font-size:16px}
.mobile-drawer .btn{width:100%;margin-top:18px}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,filter .18s ease;
  white-space:nowrap;
}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--accent);color:#14161C}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 30px -12px rgba(198,255,61,.55);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--brand);color:#fff}
.btn-ghost:hover{background:rgba(109,74,255,.16);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--ink);border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.text-link:hover{color:var(--accent);border-color:var(--accent)}
.text-link:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
.card-dark{
  background:var(--shell-2);border-radius:var(--radius-card);
  box-shadow:var(--shadow-dark);padding:28px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.card-dark:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 22px 44px -22px rgba(0,0,0,.95);
}
.card-light{
  background:var(--surface);color:var(--ink-dark);
  border-radius:var(--radius-card);box-shadow:var(--shadow-light);padding:28px;
}
.card-light:hover{box-shadow:0 18px 40px -18px rgba(16,18,24,.28)}
.icon-box{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(109,74,255,.16);margin-bottom:18px;
}
.icon-box svg{width:24px;height:24px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(109,74,255,.16);color:#B9A6FF;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-title{
  position:relative;padding-left:16px;
  font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;color:#fff;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:20px;border-radius:2px;background:var(--brand);
}
.sec-desc{margin-top:12px;padding-left:16px;font-size:15px;color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--shell);border-bottom:1px solid var(--line-soft);padding:80px 0 88px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;opacity:.24;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 100% at 10% 15%, rgba(11,13,18,.94) 0%, rgba(11,13,18,.76) 42%, rgba(11,13,18,.34) 100%);
}
.hero > .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:6px;
  background:rgba(198,255,61,.12);color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.06em;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:700;color:#fff;
  max-width:15em;
}
.hero-sub{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:34em}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:6px;
  font-size:13px;color:var(--ink-2);background:rgba(255,255,255,.05);
  border:1px solid var(--line);font-variant-numeric:tabular-nums;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.phone-frame{
  position:relative;width:min(292px,70vw);aspect-ratio:9/19.5;
  border-radius:32px;overflow:hidden;background:var(--shell-2);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 0 0 1px rgba(255,255,255,.06),0 34px 64px -26px rgba(0,0,0,.95);
  transform:rotate(-3deg);
}
.phone-frame img{width:100%;height:100%;object-fit:cover}
.scan-lines{
  position:absolute;inset:-10% -6%;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.08) 0 1px,transparent 1px 5px);
  opacity:.55;border-radius:40px;
}
.hero-visual::after{
  content:"";position:absolute;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,74,255,.42) 0%,rgba(109,74,255,0) 70%);
  right:-30px;bottom:-40px;pointer-events:none;
}

/* ---------- 价值区 ---------- */
.value-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px}
.value-main{display:flex;flex-direction:column}
.value-main h3{font-size:22px;line-height:1.4;font-weight:600;color:#fff;margin-bottom:14px}
.value-main p{font-size:15px;color:var(--ink-2);margin-bottom:12px}
.value-main .text-link{margin-top:auto}
.value-side{display:grid;gap:24px}
.value-side h3{font-size:19px;line-height:1.4;font-weight:600;color:#fff;margin-bottom:10px}
.value-side p{font-size:14px;color:var(--ink-2)}
.value-side .icon-box{width:42px;height:42px;border-radius:12px;margin-bottom:14px}

/* ---------- 截图轨道 ---------- */
.shots-wrap{position:relative;padding:0 52px}
.shot-mask{
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 4%,#000 96%,transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 4%,#000 96%,transparent 100%);
}
.shot-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:8px 12px 22px;scrollbar-width:thin;scroll-behavior:smooth;
}
.shot-item{flex:0 0 auto;width:220px;scroll-snap-align:start}
.shot-screen{
  width:100%;aspect-ratio:9/19.5;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);background:var(--shell-2);
  box-shadow:var(--shadow-dark);transition:transform .18s ease,box-shadow .18s ease;
}
.shot-screen img{width:100%;height:100%;object-fit:cover}
.shot-item:hover .shot-screen{
  transform:translateY(-4px);
  box-shadow:0 0 0 1px rgba(198,255,61,.35),0 22px 44px -22px rgba(0,0,0,.95);
}
.shot-cap{margin-top:12px;text-align:center;font-size:13px;color:var(--ink-2)}
.shot-arrow{
  position:absolute;top:44%;transform:translateY(-50%);
  width:40px;height:40px;border-radius:50%;cursor:pointer;z-index:5;
  background:var(--shell-2);border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;
  transition:.18s ease;
}
.shot-arrow:hover{background:rgba(109,74,255,.32);border-color:var(--brand)}
.shot-arrow:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.shot-arrow.prev{left:0}
.shot-arrow.next{right:0}
.shot-dots{display:flex;justify-content:center;gap:8px;margin-top:8px}
.shot-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.2);cursor:pointer;transition:.18s ease}
.shot-dot.active{background:var(--accent);width:22px;border-radius:4px}
.shot-dot:hover{background:rgba(255,255,255,.45)}
.shot-dot:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-card{background:var(--surface);color:var(--ink-dark)}
.req-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.req-head svg{width:26px;height:26px;stroke:var(--brand);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.req-head h3{font-size:20px;font-weight:700;color:var(--ink-dark)}
.req-note{font-size:13px;color:var(--ink-dark-2);margin-bottom:18px}
.req-list{border-top:1px solid #E7E9EF}
.req-list > div{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid #E7E9EF}
.req-list dt{font-size:14px;color:var(--ink-dark-2)}
.req-list dd{font-size:14px;font-weight:600;color:var(--ink-dark);font-variant-numeric:tabular-nums;text-align:right}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.review-col{display:grid;gap:24px}
.review-col.offset{transform:translateY(32px)}
.review-card{position:relative}
.stars{color:var(--accent);font-size:14px;letter-spacing:.18em;line-height:1}
.review-text{margin-top:12px;font-size:15px;color:var(--ink-2);line-height:1.8}
.review-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line-soft)}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:rgba(109,74,255,.22);color:#D6CBFF;font-size:15px;font-weight:700;
}
.review-meta{font-size:13px;color:#6C7382;line-height:1.6}
.review-meta strong{display:block;color:var(--ink);font-size:14px;font-weight:600}
.verify-badge{
  position:absolute;top:20px;right:20px;height:22px;padding:0 8px;border-radius:6px;
  display:inline-flex;align-items:center;font-size:11px;font-weight:600;letter-spacing:.04em;
  background:rgba(53,208,127,.14);color:var(--ok);
}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;
  background:var(--shell-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:40px;box-shadow:var(--shadow-dark);
}
.cta-panel h2{font-size:clamp(22px,2.2vw,30px);line-height:1.3;font-weight:700;color:#fff}
.cta-panel .cta-desc{margin-top:12px;font-size:15px;color:var(--ink-2)}
.cta-right{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px}
.cta-foot{font-size:13px;color:#6C7382;line-height:1.7}
.qr-box{
  width:120px;height:120px;border-radius:12px;flex:none;
  border:1px dashed rgba(255,255,255,.24);background:rgba(255,255,255,.03);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:#6C7382;text-align:center;line-height:1.5;padding:8px;
}
.cta-right-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--shell-2);border-radius:var(--radius-card);
  box-shadow:var(--shadow-dark);
  transition:transform .18s ease,box-shadow .18s ease;
}
.news-card:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,255,255,.14),0 22px 44px -22px rgba(0,0,0,.95);
}
.news-card:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:#0E1119;position:relative}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-thumb::after{
  content:"";position:absolute;right:0;bottom:0;width:16px;height:16px;
  background:var(--shell-2);clip-path:polygon(100% 0,100% 100%,0 100%);
}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.news-date{font-size:12px;color:#6C7382;font-variant-numeric:tabular-nums}
.news-title{
  font-size:17px;line-height:1.5;font-weight:600;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  background:var(--shell-2);border-radius:var(--radius-card);box-shadow:var(--shadow-dark);
  padding:56px 32px;text-align:center;
}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:16px}

/* ---------- FAQ ---------- */
.faq-card{background:var(--surface);border-radius:var(--radius-card);box-shadow:var(--shadow-light);overflow:hidden}
.faq-item{border-bottom:1px solid #E7E9EF;color:var(--ink-dark)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 26px;font-size:16px;font-weight:600;line-height:1.6;
  transition:color .18s ease,background .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FAFAFC;color:var(--brand)}
.faq-item summary:focus-visible{outline:3px solid var(--brand);outline-offset:-3px}
.faq-item[open] summary{color:var(--brand)}
.faq-icon{
  width:22px;height:22px;flex:none;position:relative;transition:transform .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;transition:transform .2s ease,opacity .2s ease}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--ink-dark-2)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;background:var(--shell-2);border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand .logo-mark{font-size:18px}
.footer-brand .logo-sub{font-size:11px;letter-spacing:.14em}
.footer-about{margin-top:16px;font-size:14px;color:var(--ink-2);line-height:1.8;max-width:26em}
.footer h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-links a{display:block;font-size:14px;line-height:1.6;color:var(--ink-2);padding:5px 0;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-links a:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.footer-bottom{
  margin-top:44px;border-top:1px solid var(--line-soft);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  font-size:13px;color:#6C7382;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279.98px){
  .container{padding:0 24px}
}
@media (min-width:1024px) and (max-width:1279.98px){
  .side{width:220px}
  .content{margin-left:220px}
  .side-card{display:none}
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023.98px){
  .side{display:none}
  .mobile-bar{display:flex}
  .content{margin-left:0;padding-top:60px}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{max-width:none}
  .hero-visual{order:2}
  .section{padding:72px 0}
  .value-grid{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .review-col.offset{transform:none}
  .cta-panel{grid-template-columns:1fr;padding:32px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:639.98px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%;min-height:48px}
  .phone-frame{transform:rotate(0deg)}
  .shots-wrap{padding:0}
  .shot-arrow{display:none}
  .shot-track{padding:4px 16px 20px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .news-grid{grid-template-columns:1fr}
  .cta-btns{width:100%;flex-direction:column}
  .cta-btns .btn{width:100%}
  .review-grid{gap:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card-dark:hover,.news-card:hover,.btn:hover,.text-link:hover,.footer-links a:hover{transform:none!important}
}

/* roulang page: article */
:root{
    --brand:#6D4AFF;
    --accent:#C6FF3D;
    --shell:#0B0D12;
    --shell-2:#141824;
    --surface:#FFFFFF;
    --surface-2:#F4F5F8;
    --ink:#F5F6FA;
    --ink-2:#A7ADBB;
    --ink-dark:#14161C;
    --ink-dark-2:#5A6270;
    --success:#35D07F;
    --warn:#FFB020;
    --danger:#FF5A5F;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --radius-lg:18px;
    --radius-md:12px;
    --radius-sm:6px;
    --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -20px rgba(0,0,0,.9);
    --shadow-light:0 12px 32px -16px rgba(16,18,24,.18);
    --sidebar-w:260px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink);
    background:var(--shell);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:3px solid var(--accent);outline-offset:2px;}

  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

  /* 左侧竖向导航 */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    background:var(--shell-2);border-right:1px solid var(--line);
    display:flex;flex-direction:column;gap:20px;padding:26px 18px 22px;
    overflow-y:auto;z-index:60;
  }
  .logo{display:inline-flex;flex-direction:column;gap:2px;}
  .logo-mark{font-size:19px;font-weight:700;letter-spacing:.02em;color:#fff;line-height:1.2;}
  .logo-sub{font-size:12px;letter-spacing:.2em;color:var(--ink-2);line-height:1.2;}

  .side-nav{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:44px;padding:0 16px;border-radius:10px;
    font-size:15px;color:var(--ink-2);transition:all .18s ease;
  }
  .nav-item svg{
    width:20px;height:20px;flex:none;fill:none;stroke:currentColor;
    stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
  }
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateX(2px);}
  .nav-item:active{transform:translateX(1px);}
  .nav-item.active{background:rgba(109,74,255,.16);color:#fff;}
  .nav-item.active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
    border-radius:0 3px 3px 0;background:var(--accent);
  }

  .sidebar-card{
    margin-top:auto;display:flex;flex-direction:column;gap:10px;
    background:rgba(255,255,255,.03);border:1px solid var(--line);
    border-radius:14px;padding:16px;
  }
  .sidebar-card .row{
    display:flex;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;
  }
  .sidebar-card .row strong{color:#fff;font-weight:600;}
  .sidebar-note{font-size:12px;line-height:1.7;color:rgba(167,173,187,.72);}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:999px;
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:all .18s ease;white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:var(--ink-dark);box-shadow:0 10px 24px -16px rgba(198,255,61,.9);}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 30px -18px rgba(198,255,61,1);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{border-color:var(--brand);color:#fff;}
  .btn-ghost:hover{background:rgba(109,74,255,.16);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-sm{height:36px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}

  .link-underline{
    color:var(--ink-2);border-bottom:1px solid rgba(255,255,255,.25);
    padding-bottom:2px;transition:all .18s ease;
  }
  .link-underline:hover{color:var(--accent);border-color:var(--accent);}

  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:var(--radius-sm);font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .tag-brand{background:rgba(109,74,255,.16);color:#B9A6FF;}

  /* 页面骨架 */
  .page{margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-height:100vh;}
  .main{flex:1;padding:34px 0 8px;}

  /* 移动端顶部导航 */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:60px;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:var(--shell);border-bottom:1px solid var(--line);z-index:70;
  }
  .mobile-bar .logo-mark{font-size:16px;}
  .mobile-bar .logo-sub{font-size:10px;letter-spacing:.16em;}
  .hamburger{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    transition:all .18s ease;
  }
  .hamburger svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;}
  .hamburger:hover{background:rgba(255,255,255,.06);}
  .hamburger:active{transform:translateY(1px);}

  .mobile-drawer{
    position:fixed;top:60px;left:0;right:0;bottom:0;z-index:65;
    background:var(--shell);padding:18px 16px 40px;overflow-y:auto;
    opacity:0;transform:translateY(-10px);pointer-events:none;transition:all .2s ease;
  }
  .mobile-drawer.open{opacity:1;transform:none;pointer-events:auto;}
  .mobile-drawer .sidebar-card{margin-top:18px;}

  /* 面包屑 */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--ink-2);margin-bottom:22px;
  }
  .breadcrumb a{color:var(--ink-2);transition:color .18s ease;}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:rgba(255,255,255,.28);}
  .breadcrumb .current{color:#fff;}

  /* 文章标题区 */
  .article-head{
    max-width:860px;margin:0 auto 26px;padding-bottom:22px;
    border-bottom:1px solid var(--line);
  }
  .article-head h1{
    margin-top:14px;font-size:clamp(26px,3.4vw,38px);line-height:1.28;
    font-weight:700;letter-spacing:-.01em;color:#fff;
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:14px;font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;
  }
  .article-meta .dot{color:rgba(255,255,255,.28);}

  /* 正文与阅读栏 */
  .article-layout{
    display:grid;grid-template-columns:minmax(0,860px);
    justify-content:center;align-items:start;gap:32px;
  }
  @media (min-width:1280px){
    .article-layout{grid-template-columns:minmax(0,860px) 180px;}
  }

  .article-card{
    max-width:860px;margin:0 auto;padding:48px;
    background:var(--surface);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-light);
  }

  .article-body{font-size:16px;line-height:1.9;color:var(--ink-dark-2);}
  .article-body p{margin:0 0 1.2em;}
  .article-body h2{
    position:relative;font-size:clamp(20px,2vw,26px);line-height:1.35;font-weight:700;
    color:var(--ink-dark);margin:40px 0 16px;padding-left:14px;
  }
  .article-body h2:first-child{margin-top:0;}
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.22em;width:4px;height:20px;
    border-radius:2px;background:var(--brand);
  }
  .article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--ink-dark);margin:28px 0 12px;}
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;list-style:revert;}
  .article-body li{margin:.4em 0;}
  .article-body ul li::marker{color:var(--brand);}
  .article-body ol li::marker{color:var(--brand);font-weight:600;}
  .article-body blockquote{
    margin:1.4em 0;padding:14px 18px;border-left:4px solid var(--brand);
    background:var(--surface-2);border-radius:0 12px 12px 0;color:var(--ink-dark-2);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body img{max-width:100%;height:auto;border-radius:12px;margin:1.4em auto;}
  .article-body figure{margin:1.6em 0;}
  .article-body figcaption{text-align:center;font-size:13px;color:#8A90A0;margin-top:10px;}
  .article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:#8A6BFF;}
  .article-body strong{color:var(--ink-dark);font-weight:600;}
  .article-body code{
    font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;
    background:var(--shell-2);color:var(--accent);padding:2px 6px;border-radius:6px;
  }
  .article-body pre{
    background:var(--shell-2);color:var(--ink);padding:16px 18px;border-radius:12px;
    overflow-x:auto;margin:1.4em 0;font-size:14px;line-height:1.7;
  }
  .article-body pre code{background:transparent;color:inherit;padding:0;}
  .article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
  .article-body th,.article-body td{border:1px solid #E4E7EF;padding:10px 12px;text-align:left;}
  .article-body th{background:var(--surface-2);color:var(--ink-dark);font-weight:600;}

  .article-foot{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
    margin-top:36px;padding-top:20px;border-top:1px solid #E9EBF1;
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;}

  .empty-state{
    display:flex;flex-direction:column;align-items:flex-start;gap:14px;
    padding:8px 0 4px;
  }
  .empty-state .empty-icon{
    width:46px;height:46px;border-radius:14px;background:rgba(109,74,255,.12);
    display:flex;align-items:center;justify-content:center;
  }
  .empty-state .empty-icon svg{
    width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.8;
    stroke-linecap:round;stroke-linejoin:round;
  }
  .empty-title{font-size:24px;font-weight:700;color:var(--ink-dark);}
  .empty-state p{font-size:15px;line-height:1.85;color:var(--ink-dark-2);max-width:560px;}

  /* 阅读辅助 */
  .reader-rail{display:none;flex-direction:column;gap:14px;position:sticky;top:34px;}
  @media (min-width:1280px){.reader-rail{display:flex;}}
  .rail-card{
    background:var(--shell-2);border:1px solid var(--line);border-radius:14px;
    padding:16px;display:flex;flex-direction:column;gap:10px;
  }
  .rail-title{font-size:13px;font-weight:600;color:#fff;letter-spacing:.04em;}
  .rail-text{font-size:12px;line-height:1.7;color:var(--ink-2);}
  .rail-card a{
    font-size:13px;color:var(--ink-2);padding:6px 0;border-radius:8px;transition:color .18s ease;
  }
  .rail-card a:hover{color:var(--accent);}

  /* 分类入口 */
  .entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:60px;}
  .entry-card{
    display:block;background:var(--shell-2);border:1px solid var(--line);
    border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-dark);
    transition:all .18s ease;
  }
  .entry-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
  .entry-card:active{transform:translateY(0);}
  .entry-icon{
    width:42px;height:42px;border-radius:12px;margin-bottom:14px;
    display:flex;align-items:center;justify-content:center;background:rgba(109,74,255,.16);
  }
  .entry-icon svg{
    width:20px;height:20px;fill:none;stroke:#B9A6FF;stroke-width:1.7;
    stroke-linecap:round;stroke-linejoin:round;
  }
  .entry-card h3{font-size:17px;font-weight:600;color:#fff;}
  .entry-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-2);}

  /* CTA */
  .cta-band{
    margin-top:60px;padding:32px 36px;border-radius:var(--radius-lg);
    background:var(--shell-2);border:1px solid var(--line);box-shadow:var(--shadow-dark);
  }
  .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
  .cta-band h2{font-size:clamp(20px,2.2vw,26px);line-height:1.3;font-weight:700;color:#fff;}
  .cta-band p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--ink-2);max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* 页脚 */
  .footer{background:var(--shell-2);border-top:1px solid var(--line);margin-top:68px;padding:56px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;}
  .footer-about{margin-top:14px;max-width:340px;font-size:14px;line-height:1.8;color:var(--ink-2);}
  .footer-links h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:12px;}
  .footer-links a{
    display:block;font-size:14px;line-height:1.4;color:var(--ink-2);
    padding:7px 0;transition:all .18s ease;
  }
  .footer-links a:hover{color:var(--accent);transform:translateX(2px);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    font-size:13px;color:var(--ink-2);
  }

  /* 响应式 */
  @media (max-width:1023px){
    .sidebar{display:none;}
    .mobile-bar{display:flex;}
    .page{margin-left:0;padding-top:60px;}
    .container{padding:0 24px;}
    .main{padding-top:26px;}
    .entry-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
    .article-card{padding:32px;}
  }
  @media (max-width:639px){
    .container{padding:0 16px;}
    .entry-grid{grid-template-columns:1fr;margin-top:44px;}
    .footer-grid{grid-template-columns:1fr;gap:22px;}
    .article-card{padding:20px;border-radius:14px;}
    .article-head h1{font-size:26px;}
    .cta-band{padding:24px 20px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 100%;}
    .footer{padding:44px 0 24px;}
    .footer-bottom{font-size:12px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    .entry-card:hover,.btn:hover,.nav-item:hover,.footer-links a:hover{transform:none;}
  }

/* roulang page: category1 */
:root{
    --brand:#6D4AFF;
    --accent:#C6FF3D;
    --shell:#0B0D12;
    --shell-2:#141824;
    --surface:#FFFFFF;
    --surface-2:#F4F5F8;
    --ink:#F5F6FA;
    --ink-2:#A7ADBB;
    --ink-dark:#14161C;
    --ink-dark-2:#5A6270;
    --success:#35D07F;
    --warning:#FFB020;
    --danger:#FF5A5F;
    --line:rgba(255,255,255,.07);
    --line-strong:rgba(255,255,255,.14);
    --radius:18px;
    --radius-sm:12px;
    --ring:rgba(109,74,255,.18);
    --side-w:260px;
    --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -20px rgba(0,0,0,.9);
    --shadow-light:0 12px 32px -16px rgba(16,18,24,.18);
    --ease:.18s ease;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--shell);
    color:var(--ink);
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer}
  h1,h2,h3,p,dl,dd,figure{margin:0}
  :focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

  /* ---------- 左侧导航 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
    background:var(--shell-2);border-right:1px solid var(--line);
    padding:26px 18px 22px;display:flex;flex-direction:column;gap:20px;
    overflow-y:auto;z-index:60;
  }
  .logo{display:inline-flex;flex-direction:column;gap:4px;align-items:flex-start}
  .logo-mark{font-size:22px;font-weight:700;letter-spacing:.02em;color:#fff;line-height:1.2}
  .logo-sub{font-size:12px;letter-spacing:.16em;color:var(--accent);line-height:1}
  .logo-row{flex-direction:row;align-items:baseline;gap:8px}
  .logo-row .logo-mark{font-size:18px}
  .logo-row .logo-sub{font-size:11px;letter-spacing:.08em}

  .side-nav{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line);padding-top:16px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 16px;
    border-radius:10px;font-size:15px;color:var(--ink-2);
    transition:background-color var(--ease),color var(--ease),transform var(--ease);
  }
  .nav-item svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .nav-item:hover{background:rgba(255,255,255,.06);color:var(--ink);transform:translateX(2px)}
  .nav-item:active{transform:translateX(0) translateY(1px)}
  .nav-item.active{background:rgba(109,74,255,.16);color:#fff;font-weight:600}
  .nav-item.active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--accent);
  }
  .side-card{
    margin-top:auto;background:rgba(255,255,255,.03);border:1px solid var(--line);
    border-radius:var(--radius-sm);padding:16px;display:flex;flex-direction:column;gap:6px;
  }
  .side-card-label{font-size:11px;letter-spacing:.12em;color:var(--ink-2)}
  .side-card-ver{font-size:24px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2}
  .side-card-meta{font-size:12px;color:var(--ink-2);font-variant-numeric:tabular-nums;margin-bottom:10px}
  .side-foot{font-size:12px;color:rgba(167,173,187,.75);line-height:1.7}

  /* ---------- 移动端顶栏 ---------- */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
    background:rgba(11,13,18,.96);border-bottom:1px solid var(--line);
    align-items:center;justify-content:space-between;padding:0 16px;
  }
  .menu-btn{
    width:42px;height:42px;border-radius:10px;border:1px solid var(--line-strong);
    background:rgba(255,255,255,.04);display:grid;place-items:center;color:var(--ink);
    transition:background-color var(--ease),border-color var(--ease);
  }
  .menu-btn:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.26)}
  .menu-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
  .drawer{
    display:none;position:fixed;top:60px;left:0;right:0;bottom:0;z-index:65;
    background:var(--shell);border-top:1px solid var(--line);
    padding:18px 16px 32px;overflow-y:auto;
  }
  .drawer.open{display:block}
  .drawer .side-nav{border-top:0;padding-top:0;margin-bottom:18px}

  /* ---------- 布局 ---------- */
  .layout{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
  .section{padding:56px 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}
  .section-title{
    position:relative;padding-left:16px;font-size:clamp(24px,2.6vw,34px);line-height:1.25;
    font-weight:700;color:#fff;letter-spacing:-.01em;
  }
  .section-title::before{
    content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--brand);
  }
  .section-sub{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:720px}

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;padding:60px 0 56px;overflow:hidden;border-bottom:1px solid var(--line);
    background-image:linear-gradient(180deg, rgba(11,13,18,.88) 0%, rgba(11,13,18,.97) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
  }
  .page-head::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
    background-image:repeating-linear-gradient(0deg, rgba(255,255,255,.9) 0 1px, transparent 1px 5px);
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:22px;position:relative;z-index:1}
  .breadcrumb a{transition:color var(--ease)}
  .breadcrumb a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}
  .breadcrumb .sep{color:rgba(255,255,255,.3)}
  .breadcrumb .current{color:var(--ink)}
  .page-head-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
  .page-title{font-size:clamp(30px,4vw,48px);line-height:1.16;font-weight:700;color:#fff;letter-spacing:-.015em;margin-bottom:18px}
  .page-lead{font-size:16px;line-height:1.9;color:var(--ink-2);max-width:620px;margin-bottom:28px}
  .head-actions{display:flex;flex-wrap:wrap;gap:14px}
  .page-head-media{
    border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-dark);
  }
  .page-head-media img{width:100%;aspect-ratio:16/9;object-fit:cover}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
    transition:transform var(--ease),background-color var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease);
  }
  .btn-lg{height:52px;padding:0 28px;font-size:16px}
  .btn-sm{height:36px;padding:0 16px;font-size:14px}
  .btn-block{width:100%}
  .btn-primary{background:var(--accent);color:#14161C}
  .btn-primary:hover{background:#d6ff63;transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(198,255,61,.65)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-ghost{background:transparent;border-color:var(--brand);color:var(--ink)}
  .btn-ghost:hover{background:rgba(109,74,255,.16);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-text{
    display:inline-flex;align-items:center;height:36px;font-size:14px;font-weight:600;color:var(--ink);
    border-bottom:1px solid rgba(255,255,255,.35);padding:0 2px;transition:color var(--ease),border-color var(--ease);
  }
  .btn-text:hover{color:var(--accent);border-bottom-color:var(--accent)}

  /* ---------- 标签 / 徽章 ---------- */
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
    background:rgba(109,74,255,.16);color:#B9A6FF;
  }
  .pill-row{list-style:none;display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:18px 0 24px}
  .pill{
    display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
    font-size:13px;color:var(--ink);background:rgba(255,255,255,.05);border:1px solid var(--line);
    font-variant-numeric:tabular-nums;
  }

  /* ---------- 下载面板 ---------- */
  .panel{
    position:relative;overflow:hidden;background:var(--shell-2);border-radius:var(--radius);
    padding:34px 36px;box-shadow:var(--shadow-dark);
  }
  .panel::after{
    content:"";position:absolute;top:0;right:0;width:0;height:0;
    border-top:26px solid rgba(109,74,255,.45);border-left:26px solid transparent;
  }
  .download-panel{display:flex;justify-content:space-between;align-items:center;gap:36px}
  .panel-title{font-size:clamp(22px,2.2vw,28px);font-weight:700;color:#fff;margin-top:14px}
  .panel-desc{font-size:15px;color:var(--ink-2);margin-top:10px;max-width:520px}
  .btn-group{display:flex;flex-wrap:wrap;gap:14px}
  .panel-note{font-size:13px;color:var(--ink-2);margin-top:18px}
  .qr-box{
    flex:none;display:flex;flex-direction:column;align-items:center;gap:10px;
    padding:14px;border-radius:var(--radius-sm);background:rgba(255,255,255,.04);border:1px solid var(--line);
  }
  .qr-pattern{
    width:120px;height:120px;border-radius:8px;background-color:#fff;
    background-image:repeating-conic-gradient(#14161C 0% 25%, #ffffff 0% 50%);
    background-size:15px 15px;
  }
  .qr-label{font-size:12px;color:var(--ink-2);letter-spacing:.04em}

  /* ---------- 系统要求卡 ---------- */
  .spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
  .spec-card{
    background:var(--surface);border-radius:var(--radius);padding:30px 30px 24px;
    box-shadow:var(--shadow-light);color:var(--ink-dark);
    transition:transform var(--ease),box-shadow var(--ease);
  }
  .spec-card:hover{transform:translateY(-2px);box-shadow:0 20px 44px -18px rgba(16,18,24,.3)}
  .spec-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
  .spec-icon{
    width:44px;height:44px;flex:none;border-radius:var(--radius-sm);display:grid;place-items:center;
    background:rgba(109,74,255,.12);color:var(--brand);
  }
  .spec-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .spec-title{font-size:20px;font-weight:600;color:var(--ink-dark);line-height:1.3}
  .spec-desc{font-size:13px;color:var(--ink-dark-2);margin-top:2px}
  .spec-list{margin-top:4px;border-top:1px solid #E6E8EF}
  .spec-row{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid #E6E8EF}
  .spec-row:last-child{border-bottom:0}
  .spec-row dt{font-size:14px;color:var(--ink-dark-2)}
  .spec-row dd{font-size:14px;font-weight:600;color:var(--ink-dark);text-align:right;font-variant-numeric:tabular-nums}

  /* ---------- 版本历史 ---------- */
  .version-list{border:1px solid var(--line);border-radius:var(--radius);background:var(--shell-2);overflow:hidden}
  .version-head,.version-row{
    display:grid;grid-template-columns:120px 130px minmax(0,1fr) 110px;gap:18px;align-items:center;padding:0 24px;
  }
  .version-head{
    height:48px;font-size:12px;letter-spacing:.08em;color:var(--ink-2);
    background:rgba(255,255,255,.02);border-bottom:1px solid var(--line);
  }
  .version-row{
    min-height:64px;border-bottom:1px solid var(--line);font-size:14px;color:var(--ink-2);
    transition:background-color var(--ease),color var(--ease);
  }
  .version-row:last-child{border-bottom:0}
  .version-row:hover{background:rgba(255,255,255,.06);color:var(--ink)}
  .version-no{font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}
  .version-date{font-size:13px;font-variant-numeric:tabular-nums}
  .version-note{line-height:1.6}
  .version-link{
    justify-self:end;font-size:13px;font-weight:600;color:var(--accent);
    border-bottom:1px solid rgba(198,255,61,.35);padding-bottom:2px;
    transition:border-color var(--ease),color var(--ease);
  }
  .version-link:hover{border-bottom-color:var(--accent)}

  /* ---------- 安装步骤 ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
  .step{
    background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:var(--radius-sm);
    padding:24px 22px;transition:transform var(--ease),border-color var(--ease),background-color var(--ease);
  }
  .step:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(255,255,255,.055)}
  .step-no{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent);font-variant-numeric:tabular-nums}
  .step-title{font-size:17px;font-weight:600;color:#fff;margin:12px 0 8px;line-height:1.4}
  .step-text{font-size:14px;line-height:1.75;color:var(--ink-2)}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px}
  .faq-item{background:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow-light);overflow:hidden}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
    min-height:60px;padding:18px 24px;font-size:16px;font-weight:600;color:var(--ink-dark);
    transition:color var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-item[open] summary{color:var(--brand)}
  .faq-icon{width:22px;height:22px;flex:none;color:var(--brand)}
  .faq-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
  .faq-mark{margin-left:auto;width:22px;height:22px;position:relative;flex:none}
  .faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--ink-dark-2);border-radius:2px;transition:transform var(--ease)}
  .faq-mark::before{left:50%;top:5px;bottom:5px;width:2px;transform:translateX(-50%)}
  .faq-mark::after{top:50%;left:5px;right:5px;height:2px;transform:translateY(-50%)}
  .faq-item[open] .faq-mark::before{transform:translateX(-50%) scaleY(0)}
  .faq-body{padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-dark-2)}

  /* ---------- CTA ---------- */
  .cta-strip{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    padding:28px 32px;border-radius:var(--radius);border:1px solid var(--line-strong);
    background:linear-gradient(90deg, rgba(109,74,255,.24) 0%, rgba(20,24,36,.92) 72%);
    box-shadow:var(--shadow-dark);
  }
  .cta-title{font-size:20px;font-weight:700;color:#fff;line-height:1.4}
  .cta-text{font-size:14px;color:var(--ink-2);margin-top:8px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}

  /* ---------- 页脚 ---------- */
  .footer{margin-top:auto;background:var(--shell-2);border-top:1px solid var(--line);padding:56px 0 0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
  .footer-brand .logo{margin-bottom:16px}
  .footer-about{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:320px}
  .footer-links h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px}
  .footer-links a{display:block;font-size:14px;line-height:1.4;color:var(--ink-2);padding:7px 0;transition:color var(--ease),transform var(--ease)}
  .footer-links a:hover{color:var(--accent);transform:translateX(2px)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
    border-top:1px solid var(--line);margin-top:44px;padding:22px 0 26px;font-size:13px;color:var(--ink-2);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    :root{--side-w:220px}
    .side-card{display:none}
    .container{padding:0 32px}
  }
  @media (max-width:1023px){
    :root{--side-w:0px}
    .sidebar{display:none}
    .layout{margin-left:0;padding-top:60px}
    .mobile-bar{display:flex}
    .container{padding:0 24px}
    .page-head{padding:44px 0 44px}
    .page-head-grid{grid-template-columns:1fr;gap:30px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  }
  @media (max-width:767px){
    .spec-grid{grid-template-columns:1fr}
    .download-panel{flex-direction:column;align-items:flex-start;gap:26px}
    .panel{padding:26px 22px}
    .cta-strip{flex-direction:column;align-items:flex-start;padding:24px 22px}
    .cta-actions{width:100%}
    .head-actions{width:100%}
    .btn-group{width:100%}
    .version-head{display:none}
    .version-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}
    .version-link{justify-self:start;margin-top:4px}
  }
  @media (max-width:639px){
    .container{padding:0 16px}
    .section{padding:44px 0}
    .footer-grid{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr}
    .btn-group .btn,.head-actions .btn{width:100%}
    .cta-actions .btn{width:100%}
    .page-title{font-size:28px}
    .qr-box{align-self:center}
  }
  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
    html{scroll-behavior:auto}
  }

/* roulang page: category2 */
:root{
    --brand:#6D4AFF;
    --brand-soft:rgba(109,74,255,.16);
    --brand-line:#B9A6FF;
    --accent:#C6FF3D;
    --shell:#0B0D12;
    --shell-2:#141824;
    --shell-3:#1B2030;
    --surface:#FFFFFF;
    --surface-2:#F4F5F8;
    --ink:#F5F6FA;
    --ink-2:#A7ADBB;
    --ink-dark:#14161C;
    --ink-dark-2:#5A6270;
    --ok:#35D07F;
    --warn:#FFB020;
    --err:#FF5A5F;
    --line:rgba(255,255,255,.08);
    --line-soft:rgba(255,255,255,.07);
    --radius:18px;
    --radius-sm:12px;
    --radius-pill:999px;
    --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -20px rgba(0,0,0,.9);
    --shadow-light:0 12px 32px -16px rgba(16,18,24,.18);
    --side-w:260px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--shell);
    color:var(--ink);
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
  ul{padding-left:0;list-style:none;}
  h1{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.01em;}
  h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;}
  h3{font-size:20px;line-height:1.4;font-weight:600;}
  .num{font-variant-numeric:tabular-nums;}
  :focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px;}

  /* ---------- 侧栏导航 ---------- */
  .side-nav-wrap{
    position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
    background:var(--shell-2);border-right:1px solid var(--line);
    display:flex;flex-direction:column;gap:18px;
    padding:26px 18px 24px;overflow-y:auto;z-index:60;
  }
  .logo{display:flex;flex-direction:column;gap:2px;padding:0 10px 6px;}
  .logo-mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.02em;line-height:1.2;}
  .logo-sub{font-size:12px;color:var(--ink-2);letter-spacing:.18em;}
  .side-nav{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:44px;padding:0 16px;border-radius:10px;
    color:var(--ink-2);font-size:15px;
    transition:background .18s ease,color .18s ease,transform .18s ease;
  }
  .nav-item svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
  .nav-item:hover{background:rgba(255,255,255,.06);color:var(--ink);}
  .nav-item:active{transform:translateY(1px);}
  .nav-item.active{background:var(--brand-soft);color:#fff;}
  .nav-item.active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:22px;border-radius:2px;background:var(--accent);
  }
  .side-divider{height:1px;background:var(--line);margin:4px 10px;}
  .side-card{
    background:var(--shell-3);border:1px solid var(--line);border-radius:var(--radius-sm);
    padding:16px;display:flex;flex-direction:column;gap:12px;
  }
  .side-card p{font-size:13px;line-height:1.7;color:var(--ink-2);}
  .side-note{font-size:12px;color:var(--ink-2);padding:0 10px;line-height:1.7;}

  /* ---------- 移动端顶栏 ---------- */
  .mobile-topbar{
    display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
    background:var(--shell);border-bottom:1px solid var(--line);
    align-items:center;justify-content:space-between;padding:0 16px;
  }
  .mobile-topbar .logo{padding:0;}
  .menu-btn{
    width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:transparent;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;transition:background .18s ease;
  }
  .menu-btn:hover{background:rgba(255,255,255,.08);}
  .menu-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
  .drawer{
    display:none;position:fixed;top:60px;left:0;right:0;bottom:0;z-index:65;
    background:var(--shell);border-top:1px solid var(--line);padding:16px;overflow-y:auto;
  }
  .drawer.open{display:block;}
  .drawer .nav-item{height:48px;font-size:16px;}

  /* ---------- 主区域与容器 ---------- */
  .main-content{margin-left:var(--side-w);padding:36px 0 0;}
  .container{max-width:1240px;margin:0 auto;padding:0 40px;}
  .section{padding:56px 0;}
  .section-light{background:var(--surface-2);color:var(--ink-dark);}
  .section-light h2,.section-light h3{color:var(--ink-dark);}
  .section-light p{color:var(--ink-dark-2);}
  .section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:32px;max-width:760px;}
  .section-head h2{position:relative;padding-left:18px;}
  .section-head h2::before{
    content:"";position:absolute;left:0;top:.22em;width:4px;height:20px;border-radius:2px;background:var(--brand);
  }
  .section-head p{color:var(--ink-2);font-size:15px;line-height:1.8;}
  .section-light .section-head p{color:var(--ink-dark-2);}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:22px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--ink-2);transition:color .18s ease;}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:rgba(255,255,255,.28);}
  .breadcrumb .current{color:var(--ink);}

  /* ---------- 分类页头 ---------- */
  .cat-hero{
    position:relative;overflow:hidden;border-radius:22px;
    background:var(--shell-2);border:1px solid var(--line);box-shadow:var(--shadow-dark);
    padding:44px;display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:center;
  }
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;opacity:.16;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(0deg, rgba(255,255,255,.06) 0 1px, transparent 1px 5px);
  }
  .cat-hero-text,.cat-hero-media{position:relative;z-index:1;}
  .eyebrow{
    display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;
    color:var(--brand-line);background:var(--brand-soft);border-radius:6px;padding:6px 10px;margin-bottom:18px;
  }
  .cat-hero h1{margin-bottom:16px;}
  .cat-hero .lead{font-size:16px;color:var(--ink-2);line-height:1.85;max-width:60ch;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .cat-hero-media img{
    width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-sm);
    border:1px solid var(--line);
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:var(--radius-pill);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  }
  .btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .btn-primary{background:var(--accent);color:#14161C;}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(198,255,61,.75);}
  .btn-ghost{background:transparent;border-color:var(--brand);color:#fff;}
  .btn-ghost:hover{background:rgba(109,74,255,.2);transform:translateY(-2px);}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);
    border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:2px;transition:border-color .18s ease,color .18s ease;
  }
  .btn-link:hover{color:var(--accent);border-color:var(--accent);}
  .btn-sm{height:36px;padding:0 16px;font-size:14px;}
  .btn-lg{height:52px;padding:0 28px;font-size:16px;}
  .btn:active{transform:translateY(1px);}

  /* ---------- 标签与徽章 ---------- */
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
    background:var(--brand-soft);color:var(--brand-line);
  }
  .tag-ok{background:rgba(53,208,127,.12);color:var(--ok);}
  .tag-warn{background:rgba(255,176,32,.12);color:var(--warn);}
  .tag-num{background:rgba(255,255,255,.07);color:var(--ink-2);}

  /* ---------- 锚点标签行 ---------- */
  .tab-row{
    display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
    padding:14px;border-radius:var(--radius);background:var(--shell-2);border:1px solid var(--line);
  }
  .chip{
    display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--radius-pill);
    font-size:14px;color:var(--ink-2);border:1px solid var(--line);
    transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
  }
  .chip:hover{background:rgba(255,255,255,.07);color:#fff;border-color:rgba(255,255,255,.18);transform:translateY(-2px);}
  .chip.is-active{background:var(--brand-soft);border-color:rgba(109,74,255,.5);color:#fff;}

  /* ---------- 图文卡（左图右文） ---------- */
  .guide-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .guide-card{
    display:grid;grid-template-columns:184px 1fr;gap:20px;
    background:var(--shell-2);border:1px solid var(--line);border-radius:var(--radius);
    padding:18px;box-shadow:var(--shadow-dark);
    transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
  }
  .guide-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.16);}
  .guide-media{position:relative;}
  .guide-media img{
    width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-sm);
    border:1px solid var(--line);
  }
  .guide-media .num{
    position:absolute;left:-6px;top:-10px;
    display:inline-flex;align-items:center;justify-content:center;
    min-width:42px;height:28px;padding:0 10px;border-radius:8px;
    background:var(--accent);color:#14161C;font-size:13px;font-weight:800;letter-spacing:.06em;
    box-shadow:0 8px 18px -10px rgba(0,0,0,.9);
  }
  .guide-body{display:flex;flex-direction:column;gap:10px;min-width:0;}
  .guide-body h3{font-size:17px;color:#fff;}
  .guide-body p{font-size:13.5px;line-height:1.75;color:var(--ink-2);}
  .dot-list{display:flex;flex-direction:column;gap:6px;}
  .dot-list li{
    position:relative;padding-left:14px;font-size:13px;line-height:1.7;color:var(--ink-2);
  }
  .dot-list li::before{
    content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;border-radius:50%;background:var(--brand-line);
  }

  /* ---------- 流程步骤 ---------- */
  .step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
  .step-card{
    background:var(--surface);border-radius:var(--radius);padding:22px;
    box-shadow:var(--shadow-light);display:flex;flex-direction:column;gap:10px;
    transition:transform .18s ease,box-shadow .18s ease;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:0 18px 38px -18px rgba(16,18,24,.28);}
  .step-card .step-idx{
    width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);
    display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  }
  .step-card h3{font-size:16px;}
  .step-card p{font-size:13.5px;line-height:1.75;color:var(--ink-dark-2);}

  /* ---------- 场景卡 ---------- */
  .scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .scene-card{
    background:var(--shell-2);border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;box-shadow:var(--shadow-dark);
    transition:transform .18s ease,border-color .18s ease;
  }
  .scene-card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.16);}
  .scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .scene-body{padding:20px;display:flex;flex-direction:column;gap:10px;}
  .scene-body h3{font-size:17px;color:#fff;}
  .scene-body p{font-size:13.5px;line-height:1.75;color:var(--ink-2);}

  /* ---------- 指标条 ---------- */
  .metric-band{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  }
  .metric-cell{background:var(--shell-2);padding:24px 20px;display:flex;flex-direction:column;gap:6px;}
  .metric-cell strong{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;font-variant-numeric:tabular-nums;}
  .metric-cell span{font-size:13px;color:var(--ink-2);}

  /* ---------- FAQ ---------- */
  .faq-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-light);overflow:hidden;}
  .faq-item{border-bottom:1px solid #E7E9EF;}
  .faq-item:last-child{border-bottom:none;}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:60px;padding:16px 24px;font-size:16px;font-weight:600;color:var(--ink-dark);
    transition:color .18s ease,background .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";flex:none;width:26px;height:26px;border-radius:8px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--surface-2);color:var(--ink-dark-2);font-size:16px;font-weight:700;
    transition:transform .2s ease,color .2s ease,background .2s ease;
  }
  .faq-item summary:hover{color:var(--brand);background:#FAFAFD;}
  .faq-item[open] summary{color:var(--brand);}
  .faq-item[open] summary::after{content:"−";transform:rotate(180deg);color:#fff;background:var(--brand);}
  .faq-answer{padding:0 24px 22px;font-size:14.5px;line-height:1.9;color:var(--ink-dark-2);}

  /* ---------- 继续下载 CTA ---------- */
  .cta-band{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
    background:var(--shell-2);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 28px;box-shadow:var(--shadow-dark);
  }
  .cta-band h3{font-size:19px;color:#fff;}
  .cta-band p{font-size:13.5px;color:var(--ink-2);margin-top:6px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ---------- 页脚 ---------- */
  .footer{background:var(--shell-2);border-top:1px solid var(--line);margin-top:72px;padding:48px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
  .footer-brand .logo{padding:0 0 12px;}
  .footer-about{font-size:13.5px;line-height:1.8;color:var(--ink-2);max-width:38ch;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:4px;}
  .footer-links a{font-size:14px;color:var(--ink-2);transition:color .18s ease;}
  .footer-links a:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:36px;border-top:1px solid var(--line-soft);padding:18px 0 24px;
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:13px;color:var(--ink-2);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    :root{--side-w:220px;}
    .container{padding:0 24px;}
    .cat-hero{padding:34px;}
    .guide-card{grid-template-columns:160px 1fr;}
  }
  @media (max-width:1023px){
    .side-nav-wrap{display:none;}
    .mobile-topbar{display:flex;}
    .main-content{margin-left:0;padding-top:80px;}
    .container{padding:0 24px;}
    .cat-hero{grid-template-columns:1fr;gap:26px;padding:30px;}
    .guide-list{grid-template-columns:1fr;}
    .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .metric-band{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  }
  @media (max-width:639px){
    .container{padding:0 16px;}
    .section{padding:44px 0;}
    .cat-hero{padding:22px;border-radius:18px;}
    .cat-hero h1{font-size:clamp(26px,7vw,34px);}
    .guide-card{grid-template-columns:1fr;padding:16px;}
    .guide-media .num{left:8px;top:8px;}
    .step-grid{grid-template-columns:1fr;}
    .scene-grid{grid-template-columns:1fr;}
    .metric-band{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:24px;}
    .cta-band{padding:22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .hero-actions .btn{width:100%;}
    .footer-bottom{flex-direction:column;}
  }
  @media (prefers-reduced-motion: reduce){
    *{transition:none !important;animation:none !important;}
    .btn:hover,.guide-card:hover,.scene-card:hover,.step-card:hover,.chip:hover{transform:none !important;}
  }

/* roulang page: category3 */
:root{
  --brand:#6D4AFF;
  --accent:#C6FF3D;
  --shell:#0B0D12;
  --shell-2:#141824;
  --surface:#FFFFFF;
  --surface-2:#F4F5F8;
  --ink:#F5F6FA;
  --ink-2:#A7ADBB;
  --ink-dark:#14161C;
  --ink-dark-2:#5A6270;
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5A5F;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --r-card:18px;
  --r-inner:12px;
  --r-pill:999px;
  --r-tag:6px;
  --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-light:0 12px 32px -16px rgba(16,18,24,.18);
  --sidebar-w:260px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--shell);
  color:var(--ink);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0f1119;}
::-webkit-scrollbar-thumb{background:#2a2f40;border-radius:8px;border:2px solid #0f1119;}
::-webkit-scrollbar-thumb:hover{background:#3a4157;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--shell-2);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:26px 18px 22px;
  overflow-y:auto;
  z-index:40;
}
.logo{display:flex;flex-direction:column;gap:2px;line-height:1.25;padding:0 10px;}
.logo-mark{font-size:19px;font-weight:700;letter-spacing:.02em;color:#fff;}
.logo-sub{font-size:11px;letter-spacing:.16em;color:var(--ink-2);}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 16px;
  border-radius:10px;
  font-size:15px;
  color:var(--ink-2);
  transition:background .18s ease, color .18s ease, transform .18s ease;
}
.nav-item svg{
  width:20px;height:20px;flex:none;
  fill:none;stroke:currentColor;
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:var(--ink);}
.nav-item:active{transform:translateY(1px);}
.nav-item.active{background:rgba(109,74,255,.16);color:#fff;}
.nav-item.active::before{
  content:"";
  position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--accent);
}
.side-card{
  margin-top:auto;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 16px;
}
.side-card-label{font-size:12px;letter-spacing:.08em;color:var(--ink-2);}
.side-card-ver{
  font-size:26px;font-weight:700;color:#fff;line-height:1.3;
  font-variant-numeric:tabular-nums;
}
.side-card-time{font-size:13px;color:var(--ink-2);margin-bottom:14px;}
.side-card .btn{width:100%;}
.side-foot{font-size:12px;line-height:1.7;color:#6c7284;padding:0 10px;}

/* ============ 移动到顶部导航 ============ */
.topbar{display:none;}
.drawer{display:none;}
.page{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease, background .18s ease, filter .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#14161C;}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 26px -14px rgba(198,255,61,.75);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--brand);color:#fff;}
.btn-ghost:hover{background:rgba(109,74,255,.16);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn[disabled]{opacity:.45;pointer-events:none;}

.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-tag);font-size:12px;font-weight:600;letter-spacing:.04em;
  white-space:nowrap;
}
.tag-brand{background:rgba(109,74,255,.16);color:#B9A6FF;}
.tag-accent{background:rgba(198,255,61,.14);color:var(--accent);}
.tag-ok{background:rgba(53,208,127,.12);color:var(--ok);}
.tag-warn{background:rgba(255,176,32,.12);color:var(--warn);}

.link-more{
  font-size:14px;color:var(--accent);
  border-bottom:1px solid transparent;
  transition:border-color .18s ease, color .18s ease;
}
.link-more:hover{border-bottom-color:var(--accent);}
.link-quiet{
  font-size:14px;color:var(--ink-2);
  border-bottom:1px solid rgba(255,255,255,.25);
  transition:color .18s ease, border-color .18s ease;
}
.link-quiet:hover{color:var(--accent);border-bottom-color:var(--accent);}

.sec{padding:56px 0;}
.sec-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.sec-head::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--brand);flex:none;}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.sec-lead{color:var(--ink-2);font-size:15px;max-width:760px;margin-bottom:32px;}

.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);flex-wrap:wrap;}
.breadcrumb a{transition:color .18s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:#4b5163;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:52px 0 8px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.16;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;top:0;right:0;width:46%;height:100%;
  background:repeating-linear-gradient(180deg, rgba(198,255,61,.09) 0 1px, transparent 1px 9px);
  opacity:.5;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;font-weight:700;letter-spacing:-.02em;
  margin:18px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-lead{color:#C6CAD6;font-size:16px;max-width:600px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);
  box-shadow:var(--shadow-dark);
  border:1px solid var(--line-strong);
}

/* ============ 数据卡 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:var(--shell-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 20px;
  transition:transform .18s ease, border-color .18s ease;
}
.stat-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.stat-label{display:block;font-size:13px;color:var(--ink-2);}
.stat-value{
  display:block;font-size:clamp(22px,2.4vw,28px);font-weight:700;color:#fff;
  line-height:1.35;font-variant-numeric:tabular-nums;
}
.stat-note{display:block;font-size:13px;color:#767c8d;}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:30px;}
.timeline::before{
  content:"";position:absolute;left:6px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg, var(--brand), rgba(109,74,255,.08));
}
.tl-item{position:relative;margin-bottom:24px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;
  width:14px;height:14px;border-radius:50%;
  background:var(--shell);border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(109,74,255,.14);
}
.tl-item.is-latest::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px rgba(198,255,61,.16);}
.tl-card{
  background:var(--shell-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  transition:transform .18s ease, border-color .18s ease;
}
.tl-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.tl-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px;}
.tl-ver{font-size:20px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;}
.tl-date{font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;}
.tl-list{display:flex;flex-direction:column;gap:8px;}
.tl-list li{position:relative;padding-left:18px;font-size:15px;color:#D3D7E2;}
.tl-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:6px;height:6px;border-radius:2px;background:var(--brand);
  transform:rotate(45deg);
}
.tl-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;
  flex-wrap:wrap;
}

/* ============ 更新类型 ============ */
.upd-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;}
.upd-card{
  background:var(--shell-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .18s ease, border-color .18s ease;
}
.upd-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.upd-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.upd-body{padding:22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.upd-body h3{font-size:20px;line-height:1.4;font-weight:600;color:#fff;}
.upd-body p{font-size:15px;color:var(--ink-2);}
.upd-side{display:grid;gap:24px;grid-template-rows:1fr 1fr;}
.upd-side .upd-card{flex-direction:row;align-items:stretch;}
.upd-side img{width:132px;aspect-ratio:auto;height:100%;flex:none;}
.upd-side .upd-body{padding:18px 20px;gap:6px;}
.upd-side h3{font-size:17px;}

/* ============ 步骤流程 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step;}
.step-card{
  background:var(--surface);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow-light);
  color:var(--ink-dark);
  transition:transform .18s ease, box-shadow .18s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:0 18px 40px -18px rgba(16,18,24,.28);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:rgba(109,74,255,.12);color:var(--brand);
  font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:18px;line-height:1.45;font-weight:600;color:var(--ink-dark);margin:14px 0 8px;}
.step-card p{font-size:15px;color:var(--ink-dark-2);line-height:1.8;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:start;}
.faq-card{
  background:var(--surface);
  border-radius:var(--r-card);
  padding:8px 26px;
  box-shadow:var(--shadow-light);
}
.faq-item{border-bottom:1px solid #E6E8EF;}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;gap:12px;
  min-height:60px;padding:12px 0;
  font-size:16px;font-weight:600;color:var(--ink-dark);
  cursor:pointer;list-style:none;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";margin-left:auto;flex:none;
  font-size:20px;line-height:1;color:#98A0AF;
  transition:transform .2s ease, color .2s ease;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{content:"−";color:var(--brand);transform:rotate(180deg);}
.faq-item summary:hover{color:var(--brand);}
.faq-answer{padding:0 0 20px 0;font-size:15px;line-height:1.85;color:var(--ink-dark-2);}
.faq-aside{
  background:var(--shell-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
}
.faq-aside h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:10px;}
.faq-aside p{font-size:14px;color:var(--ink-2);margin-bottom:16px;}
.faq-aside .btn{width:100%;margin-bottom:10px;}

/* ============ CTA ============ */
.cta-band{
  background:var(--shell-2);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  padding:28px 30px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
}
.cta-band h3{font-size:20px;font-weight:600;color:#fff;line-height:1.4;}
.cta-band p{font-size:14px;color:var(--ink-2);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.footer{
  margin-top:72px;
  background:var(--shell-2);
  border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .logo{padding:0;margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.9;color:var(--ink-2);max-width:340px;}
.footer-links h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-links a{
  display:block;font-size:14px;line-height:1;color:var(--ink-2);
  padding:7px 0;
  transition:color .18s ease, transform .18s ease;
}
.footer-links a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid var(--line);
  padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  flex-wrap:wrap;
  font-size:13px;color:#767c8d;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:220px;}
  .container{padding:0 24px;}
  .upd-side img{width:104px;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .drawer{display:none;}
  .drawer.open{display:block;}
  .page{margin-left:0;padding-top:60px;}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;
    padding:0 18px;
    background:var(--shell);
    border-bottom:1px solid var(--line);
    z-index:50;
  }
  .topbar .logo{padding:0;}
  .topbar .logo-mark{font-size:17px;}
  .burger{
    display:inline-flex;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:10px;
    border:1px solid var(--line-strong);
    transition:background .18s ease;
  }
  .burger:hover{background:rgba(255,255,255,.06);}
  .burger svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;}
  .drawer{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    background:var(--shell);
    padding:20px 16px 40px;
    overflow-y:auto;
    z-index:45;
  }
  .drawer .side-nav{margin-bottom:20px;}
  .drawer .side-card{margin-top:0;}
  .hero{padding:32px 0 4px;}
  .hero::after{width:70%;opacity:.35;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-actions .btn{flex:1 1 auto;min-height:48px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .upd-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;}
  .faq-aside{order:-1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  .sec{padding:44px 0;}
  .hero h1{font-size:clamp(28px,7.6vw,36px);}
  .hero-lead{font-size:15px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .stat-grid{grid-template-columns:1fr;}
  .upd-side .upd-card{flex-direction:column;}
  .upd-side img{width:100%;aspect-ratio:16/9;height:auto;}
  .timeline{padding-left:24px;}
  .tl-item::before{left:-24px;}
  .tl-card{padding:18px 18px;}
  .faq-card{padding:6px 16px;}
  .faq-item summary{font-size:15px;}
  .cta-band{padding:22px 18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-about{max-width:none;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
    --brand:#6D4AFF;
    --accent:#C6FF3D;
    --shell:#0B0D12;
    --shell-2:#141824;
    --surface:#FFFFFF;
    --surface-2:#F4F5F8;
    --ink:#F5F6FA;
    --ink-2:#A7ADBB;
    --ink-dark:#14161C;
    --ink-dark-2:#5A6270;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --line-light:#E3E7EF;
    --ok:#35D07F;
    --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -20px rgba(0,0,0,.9);
    --shadow-light:0 12px 32px -16px rgba(16,18,24,.18);
    --radius-card:18px;
    --radius-inner:12px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--shell);
    color:var(--ink);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  .num{font-variant-numeric:tabular-nums}

  ::selection{background:rgba(109,74,255,.45);color:#fff}

  .container{
    max-width:1240px;
    margin:0 auto;
    padding:0 40px;
  }

  /* ---------- 侧栏 ---------- */
  .sidebar{
    position:fixed;
    top:0;left:0;bottom:0;
    width:260px;
    background:var(--shell-2);
    border-right:1px solid var(--line);
    display:flex;
    flex-direction:column;
    padding:26px 18px 22px;
    z-index:60;
  }
  .logo{
    display:inline-flex;
    flex-direction:column;
    gap:2px;
    padding:0 8px 22px;
    border-bottom:1px solid var(--line);
  }
  .logo-mark{
    font-size:20px;
    font-weight:700;
    letter-spacing:.01em;
    color:#fff;
  }
  .logo-sub{
    font-size:12px;
    letter-spacing:.22em;
    color:var(--ink-2);
  }
  .side-nav{
    display:flex;
    flex-direction:column;
    gap:6px;
    margin-top:20px;
    flex:1 1 auto;
    overflow-y:auto;
  }
  .nav-item{
    display:flex;
    align-items:center;
    gap:12px;
    height:44px;
    padding:0 16px;
    border-radius:10px;
    font-size:15px;
    color:var(--ink-2);
    transition:background .18s ease,color .18s ease,transform .18s ease;
    position:relative;
  }
  .nav-item svg{
    width:20px;height:20px;
    fill:none;
    stroke:currentColor;
    stroke-width:1.6;
    stroke-linecap:round;
    stroke-linejoin:round;
    flex:0 0 20px;
  }
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
  .nav-item:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
  .nav-item:active{transform:translateY(1px)}
  .nav-item.active{
    background:rgba(109,74,255,.16);
    color:#fff;
  }
  .nav-item.active::before{
    content:"";
    position:absolute;
    left:0;top:10px;bottom:10px;
    width:3px;
    border-radius:0 3px 3px 0;
    background:var(--accent);
  }
  .side-card{
    margin-top:20px;
    padding:16px;
    border-radius:var(--radius-inner);
    background:rgba(255,255,255,.03);
    border:1px solid var(--line);
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .side-card-row{
    display:flex;
    justify-content:space-between;
    align-items:baseline;
    font-size:13px;
    color:var(--ink-2);
  }
  .side-card-row strong{color:#fff;font-weight:600}
  .side-note{
    margin-top:14px;
    font-size:12px;
    line-height:1.6;
    color:rgba(167,173,187,.7);
    padding:0 4px;
  }

  /* ---------- 顶部（移动） ---------- */
  .topbar{
    display:none;
    position:fixed;
    top:0;left:0;right:0;
    height:60px;
    background:var(--shell);
    border-bottom:1px solid var(--line);
    align-items:center;
    justify-content:space-between;
    padding:0 16px;
    z-index:70;
  }
  .topbar .logo{padding:0;border:0;gap:0}
  .topbar .logo-mark{font-size:17px}
  .topbar .logo-sub{font-size:10px;letter-spacing:.16em}
  .menu-btn{
    width:42px;height:42px;
    border-radius:10px;
    border:1px solid var(--line-strong);
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    transition:background .18s ease;
  }
  .menu-btn span{
    display:block;
    width:18px;height:2px;
    background:var(--ink);
    border-radius:2px;
    transition:transform .18s ease,opacity .18s ease;
  }
  .menu-btn:hover{background:rgba(255,255,255,.06)}
  .menu-btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
  .menu-btn.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-btn.is-active span:nth-child(2){opacity:0}
  .menu-btn.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  .mobile-panel{
    display:none;
    position:fixed;
    top:60px;left:0;right:0;bottom:0;
    background:var(--shell-2);
    padding:18px 16px 40px;
    overflow-y:auto;
    z-index:65;
    border-top:1px solid var(--line);
  }
  .mobile-panel.is-open{display:block}
  .mobile-panel .nav-item{height:50px;font-size:16px}
  .mobile-panel .btn{margin-top:18px;width:100%;justify-content:center}

  .page{margin-left:260px;min-height:100vh}
  .footer{margin-left:260px}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:44px;
    padding:0 22px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    white-space:nowrap;
    transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  }
  .btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
  .btn:active{transform:translateY(1px)}
  .btn-primary{
    background:var(--accent);
    color:var(--ink-dark);
  }
  .btn-primary:hover{
    background:#D6FF66;
    box-shadow:0 12px 28px -12px rgba(198,255,61,.6);
    transform:translateY(-2px);
  }
  .btn-ghost{
    background:transparent;
    color:#fff;
    border:1px solid var(--brand);
  }
  .btn-ghost:hover{
    background:rgba(109,74,255,.18);
    transform:translateY(-2px);
  }
  .btn-sm{height:36px;padding:0 16px;font-size:14px}
  .btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

  .tag{
    display:inline-flex;
    align-items:center;
    height:24px;
    padding:0 10px;
    border-radius:6px;
    font-size:12px;
    font-weight:600;
    letter-spacing:.04em;
    background:rgba(109,74,255,.16);
    color:#B9A6FF;
  }
  .tag-solid{
    background:rgba(198,255,61,.14);
    color:var(--accent);
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--ink-2);
    margin-bottom:18px;
  }
  .breadcrumb a{transition:color .18s ease}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb a:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
  .breadcrumb .current{color:var(--ink)}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    padding:64px 0 72px;
    background:
      radial-gradient(900px 420px at 85% -10%, rgba(109,74,255,.24), transparent 70%),
      linear-gradient(180deg, #0E1119 0%, var(--shell) 100%);
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .hero::after{
    content:"";
    position:absolute;
    right:0;top:0;bottom:0;
    width:38%;
    background-image:repeating-linear-gradient(180deg, rgba(255,255,255,.08) 0 1px, transparent 1px 9px);
    opacity:.35;
    pointer-events:none;
    mask-image:linear-gradient(90deg, transparent, #000 60%);
    -webkit-mask-image:linear-gradient(90deg, transparent, #000 60%);
  }
  .hero-grid{
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:48px;
    align-items:center;
    position:relative;
    z-index:1;
  }
  .eyebrow{
    display:inline-block;
    font-size:12px;
    font-weight:600;
    letter-spacing:.16em;
    color:var(--accent);
    margin-bottom:14px;
  }
  .hero h1{
    font-size:clamp(30px,4vw,46px);
    line-height:1.18;
    font-weight:700;
    letter-spacing:-.01em;
  }
  .hero-lead{
    margin-top:18px;
    font-size:16px;
    line-height:1.9;
    color:var(--ink-2);
    max-width:640px;
  }
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
  .hero-media{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    aspect-ratio:4/3;
    border:1px solid var(--line-strong);
    box-shadow:var(--shadow-dark);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0}
  .section-light{
    background:var(--surface-2);
    color:var(--ink-dark);
    border-top:1px solid var(--line-light);
    border-bottom:1px solid var(--line-light);
  }
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:34px;
    flex-wrap:wrap;
  }
  .section-title{
    position:relative;
    padding-left:14px;
    font-size:clamp(24px,2.4vw,32px);
    line-height:1.28;
    font-weight:700;
  }
  .section-title::before{
    content:"";
    position:absolute;
    left:0;top:8px;
    width:4px;height:20px;
    border-radius:2px;
    background:var(--brand);
  }
  .section-kicker{
    display:inline-block;
    font-size:12px;
    font-weight:600;
    letter-spacing:.14em;
    color:var(--brand);
    margin-bottom:10px;
  }
  .section-desc{
    margin-top:12px;
    font-size:15px;
    color:var(--ink-2);
    max-width:720px;
  }
  .section-light .section-desc{color:var(--ink-dark-2)}

  /* ---------- 能力卡 ---------- */
  .cap-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:24px;
  }
  .cap-card{
    background:var(--shell-2);
    border-radius:var(--radius-card);
    border:1px solid var(--line);
    box-shadow:var(--shadow-dark);
    padding:26px;
    display:flex;
    flex-direction:column;
    gap:12px;
    transition:transform .18s ease,border-color .18s ease;
  }
  .cap-card:hover{transform:translateY(-2px);border-color:var(--line-strong)}
  .cap-icon{
    width:44px;height:44px;
    border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(109,74,255,.18);
    border:1px solid rgba(109,74,255,.4);
  }
  .cap-icon svg{width:22px;height:22px;fill:none;stroke:var(--accent);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .cap-card h3{font-size:20px;font-weight:600;line-height:1.4}
  .cap-card p{font-size:15px;color:var(--ink-2);line-height:1.8}
  .cap-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}
  .cap-list li{
    font-size:14px;
    color:var(--ink-2);
    padding-left:16px;
    position:relative;
    line-height:1.7;
  }
  .cap-list li::before{
    content:"";
    position:absolute;
    left:0;top:9px;
    width:6px;height:6px;
    border-radius:2px;
    background:var(--accent);
    transform:skewX(-12deg);
  }

  /* ---------- 图文交替 ---------- */
  .split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:44px;
    align-items:center;
  }
  .split + .split{margin-top:56px}
  .split.reverse .split-media{order:2}
  .split-media{
    border-radius:var(--radius-card);
    overflow:hidden;
    aspect-ratio:16/10;
    border:1px solid var(--line-strong);
    box-shadow:var(--shadow-dark);
  }
  .split-media img{width:100%;height:100%;object-fit:cover}
  .split-body h2{
    font-size:clamp(22px,2.2vw,28px);
    line-height:1.3;
    font-weight:700;
    margin-bottom:14px;
  }
  .split-body p{font-size:15px;color:var(--ink-2);line-height:1.9}
  .check-list{display:flex;flex-direction:column;gap:12px;margin-top:18px}
  .check-list li{
    display:flex;
    gap:12px;
    font-size:15px;
    line-height:1.8;
    color:var(--ink);
  }
  .check-list li svg{
    width:20px;height:20px;
    flex:0 0 20px;
    margin-top:5px;
    fill:none;
    stroke:var(--accent);
    stroke-width:1.8;
    stroke-linecap:round;
    stroke-linejoin:round;
  }
  .mini-panel{
    margin-top:22px;
    padding:16px 18px;
    border-radius:var(--radius-inner);
    background:rgba(109,74,255,.12);
    border-left:3px solid var(--brand);
    font-size:14px;
    line-height:1.8;
    color:var(--ink);
  }

  /* ---------- 步骤 ---------- */
  .steps{
    display:grid;
    grid-template-columns:repeat(5,minmax(0,1fr));
    gap:18px;
  }
  .step{
    background:#fff;
    border:1px solid var(--line-light);
    border-radius:var(--radius-card);
    padding:22px 20px;
    box-shadow:var(--shadow-light);
    transition:transform .18s ease,box-shadow .18s ease;
  }
  .step:hover{transform:translateY(-2px);box-shadow:0 18px 38px -18px rgba(16,18,24,.28)}
  .step-no{
    font-size:22px;
    font-weight:700;
    color:var(--brand);
    letter-spacing:.02em;
    display:block;
    margin-bottom:10px;
  }
  .step h3{font-size:16px;font-weight:600;color:var(--ink-dark);margin-bottom:8px}
  .step p{font-size:14px;line-height:1.7;color:var(--ink-dark-2)}

  /* ---------- 安全提示条 ---------- */
  .notice{
    margin-top:34px;
    display:flex;
    gap:18px;
    padding:22px 24px;
    border-radius:var(--radius-card);
    background:var(--shell-2);
    border:1px solid var(--line);
    border-left:4px solid var(--brand);
    box-shadow:var(--shadow-dark);
    align-items:flex-start;
  }
  .notice svg{
    width:26px;height:26px;
    flex:0 0 26px;
    margin-top:2px;
    fill:none;
    stroke:var(--warn);
    stroke-width:1.6;
    stroke-linecap:round;
    stroke-linejoin:round;
  }
  .notice h3{font-size:17px;font-weight:600;margin-bottom:6px}
  .notice p{font-size:14px;color:var(--ink-2);line-height:1.85}

  /* ---------- FAQ ---------- */
  .faq-wrap{
    background:var(--surface);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-light);
    overflow:hidden;
    border:1px solid var(--line-light);
  }
  .faq-item{border-bottom:1px solid var(--line-light)}
  .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    min-height:60px;
    padding:14px 24px;
    font-size:16px;
    font-weight:600;
    color:var(--ink-dark);
    transition:color .18s ease,background .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{background:#FAFBFD;color:var(--brand)}
  .faq-item summary:focus-visible{outline:3px solid var(--brand);outline-offset:-3px}
  .faq-item summary .mark{
    position:relative;
    width:20px;height:20px;
    flex:0 0 20px;
  }
  .faq-item summary .mark::before,
  .faq-item summary .mark::after{
    content:"";
    position:absolute;
    left:50%;top:50%;
    background:var(--brand);
    border-radius:2px;
    transform:translate(-50%,-50%);
    transition:transform .2s ease,opacity .2s ease;
  }
  .faq-item summary .mark::before{width:12px;height:2px}
  .faq-item summary .mark::after{width:2px;height:12px}
  .faq-item[open] summary{color:var(--brand)}
  .faq-item[open] summary .mark::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
  .faq-answer{
    padding:0 24px 22px;
    font-size:15px;
    line-height:1.9;
    color:var(--ink-dark-2);
    max-width:900px;
  }

  /* ---------- CTA ---------- */
  .cta-strip{padding:56px 0}
  .cta-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    flex-wrap:wrap;
    padding:30px 34px;
    border-radius:var(--radius-card);
    background:var(--shell-2);
    border:1px solid var(--line-strong);
    box-shadow:var(--shadow-dark);
  }
  .cta-inner h3{font-size:20px;font-weight:700;margin-bottom:6px}
  .cta-inner p{font-size:14px;color:var(--ink-2)}

  /* ---------- 页脚 ---------- */
  .footer{
    background:var(--shell-2);
    border-top:1px solid var(--line);
    padding:56px 0 26px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:34px;
  }
  .footer-brand .logo{padding:0 0 16px;border-bottom:0}
  .footer-about{
    font-size:14px;
    line-height:1.8;
    color:var(--ink-2);
    max-width:360px;
  }
  .footer-links{display:flex;flex-direction:column;gap:14px}
  .footer-links h3{
    font-size:14px;
    font-weight:600;
    color:#fff;
    letter-spacing:.04em;
  }
  .footer-links a{
    font-size:14px;
    line-height:1;
    color:var(--ink-2);
    transition:color .18s ease;
  }
  .footer-links a:hover{color:var(--accent)}
  .footer-links a:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
  .footer-bottom{
    margin-top:42px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:rgba(167,173,187,.8);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .sidebar{width:220px;padding:22px 14px 18px}
    .page{margin-left:220px}
    .footer{margin-left:220px}
    .side-card{display:none}
    .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  }
  @media (max-width:1023px){
    .sidebar{display:none}
    .topbar{display:flex}
    .page{margin-left:0;padding-top:60px}
    .footer{margin-left:0}
    .container{padding:0 24px}
    .hero-grid{grid-template-columns:1fr;gap:32px}
    .hero{padding:44px 0 56px}
    .hero::after{display:none}
    .split{grid-template-columns:1fr;gap:28px}
    .split.reverse .split-media{order:0}
    .cap-grid{grid-template-columns:1fr}
    .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (max-width:639px){
    .container{padding:0 16px}
    .hero h1{font-size:clamp(26px,7vw,34px)}
    .btn-row{flex-direction:column}
    .btn-row .btn{width:100%;min-height:48px}
    .section{padding:44px 0}
    .steps{grid-template-columns:1fr}
    .cta-inner{flex-direction:column;align-items:flex-start;padding:24px 20px}
    .cta-inner .btn{width:100%;min-height:48px}
    .faq-item summary{padding:14px 16px;font-size:15px}
    .faq-answer{padding:0 16px 20px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .notice{flex-direction:column;gap:12px}
  }

  @media (prefers-reduced-motion: reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
    .cap-card:hover,.step:hover,.btn:hover{transform:none}
  }

/* roulang page: category5 */
:root{
    --brand:#6D4AFF;
    --accent:#C6FF3D;
    --shell:#0B0D12;
    --shell-2:#141824;
    --surface:#FFFFFF;
    --surface-2:#F4F5F8;
    --ink:#F5F6FA;
    --ink-2:#A7ADBB;
    --ink-dark:#14161C;
    --ink-dark-2:#5A6270;
    --ok:#35D07F;
    --warn:#FFB020;
    --err:#FF5A5F;
    --line:rgba(255,255,255,.08);
    --radius:18px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--shell);
    color:var(--ink);
    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;transition:color .18s ease}
  button{font:inherit;cursor:pointer;border:0;background:none}
  h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:3px solid var(--accent);outline-offset:2px}
  .container{max-width:1240px;margin:0 auto;padding:0 40px;width:100%}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- 侧栏 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;width:260px;height:100vh;z-index:40;
    background:var(--shell-2);
    border-right:1px solid var(--line);
    padding:24px 18px 20px;
    display:flex;flex-direction:column;gap:18px;
    overflow-y:auto;
  }
  .logo{display:flex;flex-direction:column;gap:2px;padding:6px 10px 14px;border-bottom:1px solid var(--line)}
  .logo-mark{font-size:19px;font-weight:700;letter-spacing:.01em;color:#fff}
  .logo-sub{font-size:12px;letter-spacing:.14em;color:var(--ink-2)}
  .side-nav{display:flex;flex-direction:column;gap:4px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:44px;padding:0 16px;border-radius:10px;
    font-size:15px;font-weight:500;color:var(--ink-2);
    transition:background .18s ease,color .18s ease,transform .18s ease;
  }
  .nav-item svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .nav-item:hover{background:rgba(255,255,255,.06);color:var(--ink);transform:translateX(2px)}
  .nav-item:active{transform:translateX(2px) translateY(1px)}
  .nav-item.active{background:rgba(109,74,255,.16);color:#fff}
  .nav-item.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--accent)}
  .side-card{
    margin-top:auto;background:rgba(255,255,255,.03);
    border:1px solid var(--line);border-radius:14px;padding:16px;
  }
  .side-card dl{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
  .side-card .row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-2)}
  .side-card .row b{color:#fff;font-weight:600}
  .side-card .btn{width:100%}
  .side-note{font-size:12px;line-height:1.7;color:#6C7382;padding:0 4px 4px}

  /* ---------- 主区 ---------- */
  .main{margin-left:260px;min-height:100vh;display:flex;flex-direction:column}
  .section{padding:56px 0}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;flex-wrap:wrap}
  .sec-title{position:relative;padding-left:16px;font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
  .sec-title::before{content:"";position:absolute;left:0;top:.32em;width:4px;height:20px;border-radius:2px;background:var(--brand)}
  .sec-desc{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:70ch}
  .link-more{font-size:14px;font-weight:600;color:var(--accent);border-bottom:1px solid transparent;padding-bottom:2px}
  .link-more:hover{border-bottom-color:var(--accent)}

  /* ---------- 顶栏（移动端） ---------- */
  .topbar{
    position:fixed;top:0;left:0;right:0;height:60px;z-index:50;
    display:none;align-items:center;justify-content:space-between;
    padding:0 16px;background:var(--shell);border-bottom:1px solid var(--line);
  }
  .topbar .logo{flex-direction:row;align-items:baseline;gap:8px;border:0;padding:0}
  .topbar .logo-mark{font-size:17px}
  .menu-btn{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;border:1px solid var(--line);color:var(--ink)}
  .menu-btn:hover{background:rgba(255,255,255,.06)}
  .menu-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
  .drawer{
    position:fixed;top:60px;left:0;right:0;bottom:0;z-index:45;
    background:var(--shell-2);border-top:1px solid var(--line);
    padding:16px;display:none;flex-direction:column;gap:6px;overflow-y:auto;
  }
  .drawer.open{display:flex}
  .drawer .btn{margin-top:14px;width:100%}
  body.no-scroll{overflow:hidden}

  /* ---------- 页头 ---------- */
  .page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:52px 0 56px}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity:.2;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(11,13,18,.96) 0%,rgba(11,13,18,.78) 52%,rgba(11,13,18,.62) 100%);
  }
  .page-hero .container{position:relative;z-index:2}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
  .crumb a:hover{color:var(--accent)}
  .crumb-current{color:var(--ink)}
  .hero-title{margin-top:18px;font-size:clamp(28px,3.6vw,44px);line-height:1.18;font-weight:700;letter-spacing:-.015em}
  .hero-sub{margin-top:16px;max-width:62ch;color:#CBD1DE;font-size:16px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
  .hero-figure{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:0 18px 40px -20px rgba(0,0,0,.9);aspect-ratio:3/2;background:var(--shell-2)}
  .hero-figure img{width:100%;height:100%;object-fit:cover}

  /* ---------- 按钮 / 标签 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:999px;
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease,filter .18s ease,color .18s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#14161C}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(198,255,61,.6)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-ghost{background:transparent;border-color:var(--brand);color:#fff}
  .btn-ghost:hover{background:rgba(109,74,255,.14);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{height:36px;padding:0 18px;font-size:14px}
  .btn-lg{height:52px;padding:0 28px;font-size:16px}
  .btn[disabled]{opacity:.45;pointer-events:none}

  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
    font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .tag-brand{background:rgba(109,74,255,.16);color:#B9A6FF}
  .tag-soft{background:rgba(255,255,255,.06);color:var(--ink-2)}
  .tag-ok{background:rgba(53,208,127,.12);color:var(--ok)}
  .tag-warn{background:rgba(255,176,32,.12);color:var(--warn)}

  /* ---------- 卡片 ---------- */
  .card{
    background:rgba(255,255,255,.025);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:26px;
    box-shadow:0 18px 40px -20px rgba(0,0,0,.9);
    transition:transform .18s ease,border-color .18s ease,background .18s ease;
  }
  .card:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.14);background:rgba(255,255,255,.045)}
  .card-icon{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    background:rgba(109,74,255,.14);border:1px solid rgba(109,74,255,.28);
    color:#B9A6FF;margin-bottom:16px;
  }
  .card-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .card h3{font-size:18px;font-weight:600;color:#fff;line-height:1.4}
  .card p{margin-top:10px;font-size:14.5px;color:var(--ink-2)}
  .card-list{margin-top:14px;display:flex;flex-direction:column;gap:8px}
  .card-list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
  .card-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--brand)}
  .card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--accent)}
  .card-link:hover{gap:10px}

  /* ---------- 浅色卡 ---------- */
  .light-card{
    background:var(--surface);color:var(--ink-dark);
    border-radius:var(--radius);padding:8px 28px;
    box-shadow:0 12px 32px -16px rgba(16,18,24,.5);
  }
  .light-card .faq-item{border-bottom:1px solid #E7E9EF}
  .light-card .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:60px;padding:10px 0;cursor:pointer;list-style:none;
    font-size:15.5px;font-weight:600;color:var(--ink-dark);
    transition:color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-item[open] summary{color:var(--brand)}
  .faq-plus{position:relative;width:20px;height:20px;flex:none}
  .faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .2s ease}
  .faq-plus::before{left:0;top:9px;width:20px;height:2px}
  .faq-plus::after{left:9px;top:0;width:2px;height:20px}
  .faq-item[open] .faq-plus::after{transform:scaleY(0)}
  .faq-a{padding:0 4px 20px;font-size:15px;line-height:1.8;color:var(--ink-dark-2)}

  /* ---------- 联系卡 ---------- */
  .contact-card{
    background:var(--shell-2);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px;box-shadow:0 18px 40px -20px rgba(0,0,0,.9);
  }
  .contact-list{display:flex;flex-direction:column;gap:1px;margin-top:18px;border-radius:12px;overflow:hidden;background:var(--line)}
  .contact-list li{background:var(--shell-2);padding:14px 4px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--ink-2)}
  .contact-list b{color:#fff;font-weight:600;font-size:14px}
  .field{margin-top:16px}
  .field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:8px}
  .field input,.field textarea{
    width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.14);
    border-radius:10px;color:#fff;font-size:14px;padding:12px 14px;font-family:inherit;
    transition:border-color .18s ease,box-shadow .18s ease;
  }
  .field input{height:44px}
  .field textarea{min-height:96px;resize:vertical;line-height:1.7}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(109,74,255,.18)}
  .field input::placeholder,.field textarea::placeholder{color:#6C7382}
  .field-hint{margin-top:8px;font-size:12.5px;color:#6C7382}

  /* ---------- 步骤 ---------- */
  .step{position:relative;padding:24px 24px 24px 24px;border-radius:var(--radius);background:rgba(255,255,255,.025);border:1px solid var(--line);transition:transform .18s ease,border-color .18s ease}
  .step:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.14)}
  .step-no{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:10px;margin-bottom:14px;
    background:rgba(198,255,61,.12);color:var(--accent);
    font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .step h3{font-size:17px;font-weight:600;color:#fff}
  .step p{margin-top:8px;font-size:14.5px;color:var(--ink-2)}

  /* ---------- 行式列表 ---------- */
  .def-list{background:var(--surface);color:var(--ink-dark);border-radius:var(--radius);padding:8px 26px;box-shadow:0 12px 32px -16px rgba(16,18,24,.5)}
  .def-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:56px;border-bottom:1px solid #E7E9EF;font-size:14.5px}
  .def-row:last-child{border-bottom:0}
  .def-row dt{color:var(--ink-dark-2)}
  .def-row dd{color:var(--ink-dark);font-weight:600}

  /* ---------- 继续下载 CTA ---------- */
  .cta-bar{
    background:var(--shell-2);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  }
  .cta-bar h3{font-size:19px;font-weight:700;color:#fff}
  .cta-bar p{margin-top:6px;font-size:14px;color:var(--ink-2)}

  /* ---------- 页脚 ---------- */
  .footer{margin-top:auto;background:var(--shell-2);border-top:1px solid var(--line);padding:56px 0 0}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
  .footer-brand .logo{align-items:flex-start;border:0;padding:0;margin-bottom:14px}
  .footer-about{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:36ch}
  .footer-links h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
  .footer-links a{display:block;font-size:14px;line-height:1;color:var(--ink-2);padding:8px 0;transition:color .18s ease,transform .18s ease}
  .footer-links a:hover{color:var(--accent);transform:translateX(2px)}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0 26px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#6C7382;
  }

  @media (min-width:1024px){
    .section{padding:80px 0}
  }
  @media (max-width:1279px){
    .sidebar{width:220px}
    .main{margin-left:220px}
    .side-card{display:none}
    .container{padding:0 24px}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px}
  }
  @media (max-width:1023px){
    .sidebar{display:none}
    .main{margin-left:0;padding-top:60px}
    .topbar{display:flex}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  }
  @media (max-width:640px){
    .container{padding:0 16px}
    .section{padding:44px 0}
    .page-hero{padding:34px 0 40px}
    .hero-sub{font-size:15px}
    .btn{width:100%}
    .hero-meta .btn{width:auto}
    .cta-bar .btn,.side-card .btn{width:100%}
    .light-card{padding:4px 18px}
    .def-list{padding:4px 18px}
    .def-row{flex-direction:column;align-items:flex-start;justify-content:center;gap:2px;padding:12px 0}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
    html{scroll-behavior:auto}
  }