/* roulang page: index */
:root{
  --brand:#6D3BF5;
  --brand-deep:#4C22C9;
  --brand-light:#8A63FF;
  --brand-100:#EDE7FF;
  --warm:#FF7A45;
  --warm-100:#FFE9DF;
  --lime:#C6F24E;
  --ink:#17141F;
  --ink-2:#3A3547;
  --ink-3:#6B6580;
  --line:#E9E6F5;
  --bg:#F6F5FB;
  --card:#FFFFFF;
  --dark-1:#191430;
  --dark-2:#241C46;
  --grad:linear-gradient(120deg,#6D3BF5 0%,#A24BFF 45%,#FF7A45 100%);
  --grad-soft:linear-gradient(140deg,#EDE7FF 0%,#FFE9DF 100%);
  --r-sm:12px;
  --r-md:18px;
  --r-lg:28px;
  --r-xl:36px;
  --sh-sm:0 2px 8px rgba(35,20,80,.06);
  --sh-md:0 10px 28px rgba(69,32,160,.10);
  --sh-lg:0 24px 60px rgba(69,32,160,.16);
  --sh-glow:0 12px 32px rgba(109,59,245,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.28;color:var(--ink);}
h1{font-size:clamp(32px,4.4vw,54px);}
h2{font-size:clamp(24px,3vw,36px);}
h3{font-size:22px;font-weight:700;}
h4{font-size:18px;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;position:relative;}
.section-tight{padding:64px 0;}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
}
.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-deep);background:var(--brand-100);
  padding:6px 14px;border-radius:999px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{margin:16px 0 12px;}
.section-head p{color:var(--ink-3);font-size:16px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(109,59,245,.24);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-glow);}
.btn-primary:active{transform:translateY(1px);}
.btn-primary:focus-visible{outline:2px solid #fff;box-shadow:0 0 0 4px var(--brand);}
.btn-ghost{background:#fff;color:var(--ink-2);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand-light);color:var(--brand-deep);background:rgba(237,231,255,.4);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:42px;padding:0 22px;font-size:14px;}
.btn-block{width:100%;}
.arrow-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-deep);
}
.arrow-link svg{transition:transform .24s var(--ease);}
.arrow-link:hover svg{transform:translateX(4px);}
.arrow-link:hover{color:var(--brand);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  height:72px;
  background:rgba(246,245,251,.86);
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-sm);
}
.header-inner{
  height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
}
.nav-side{display:flex;align-items:center;gap:6px;}
.nav-side.right{justify-content:flex-end;gap:14px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 12px;font-size:15px;font-weight:500;color:var(--ink-2);
  border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--grad);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-deep);font-weight:600;background:rgba(237,231,255,.6);}
.nav-link.active::after{transform:scaleX(1);}
.logo{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink);
  padding:6px 4px;
}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:14px;font-weight:800;letter-spacing:-.04em;
  box-shadow:0 8px 18px rgba(109,59,245,.32);
}
.logo:hover{color:var(--brand-deep);}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

.mobile-mask{
  position:fixed;inset:0;background:rgba(23,20,31,.42);
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);
  z-index:90;
}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:88px 20px 28px;
  background:#fff;border-radius:0 0 28px 28px;
  box-shadow:var(--sh-lg);
  transform:translateY(-110%);
  transition:transform .28s var(--ease);
}
.mobile-drawer.open{transform:translateY(0);}
.mobile-mask.open{opacity:1;visibility:visible;}
.mobile-drawer a{
  display:block;padding:16px 20px;margin-bottom:10px;
  border-radius:18px;background:var(--bg);
  font-size:16px;font-weight:600;color:var(--ink-2);
  border:1px solid var(--line);
}
.mobile-drawer a.active{background:var(--brand-100);color:var(--brand-deep);border-color:var(--brand-light);}
.mobile-drawer .btn{width:100%;margin-top:6px;}
.drawer-close{
  position:absolute;top:22px;right:22px;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:#fff;font-size:18px;color:var(--ink-3);
  display:flex;align-items:center;justify-content:center;
}
@media (max-width:860px){
  .nav-side,.nav-side.right{display:none;}
  .header-inner{grid-template-columns:44px 1fr 44px;}
  .logo{grid-column:2;justify-self:center;}
  .burger{display:inline-flex;grid-column:3;justify-self:end;}
  .header-spacer-m{grid-column:1;}
}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-soft);
  padding:80px 0 88px;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(109,59,245,.14) 1px,transparent 1px);
  background-size:24px 24px;opacity:.55;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-180px;
  background:radial-gradient(circle,rgba(109,59,245,.28),transparent 68%);
  filter:blur(10px);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center;
}
.hero-copy h1{margin:20px 0 18px;}
.hero-sub{
  font-size:17px;color:var(--ink-2);max-width:520px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px;}
.badge-strip{
  display:flex;flex-wrap:wrap;gap:12px;
}
.badge-pill{
  display:flex;align-items:baseline;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;box-shadow:var(--sh-sm);
}
.badge-pill b{
  font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.badge-pill span{font-size:13px;color:var(--ink-3);font-weight:500;}
.hero-visual{position:relative;}
.hero-visual .frame{
  position:relative;border-radius:28px;overflow:hidden;
  border:1px solid var(--brand-light);
  box-shadow:0 28px 70px rgba(76,34,201,.22),0 0 0 10px rgba(109,59,245,.06);
  aspect-ratio:16/11;
  background:var(--grad-soft);
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover;}
.hero-visual .frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(25,20,48,0) 45%,rgba(25,20,48,.42) 100%);
}
.float-card{
  position:absolute;background:#fff;border-radius:16px;
  padding:12px 16px;box-shadow:var(--sh-md);border:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;
}
.float-card b{font-size:22px;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.2;}
.float-card span{font-size:12px;color:var(--ink-3);font-weight:500;}
.float-card.tl{top:22px;left:-18px;}
.float-card.br{bottom:26px;right:-14px;}
.float-card.tl b{color:var(--brand);}
.float-card.br b{color:#5C7A0A;}
@media (max-width:960px){
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;}
  .float-card.tl{left:10px;}
  .float-card.br{right:10px;}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .badge-strip{gap:10px;}
}

/* ============ 标签条 ============ */
.tagbar{
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:22px 0;
}
.tagbar-inner{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.tagbar-title{font-size:14px;font-weight:600;color:var(--ink-3);margin-right:6px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:500;color:var(--ink-2);
  background:var(--bg);border:1px solid var(--line);
  padding:7px 14px;border-radius:999px;
  transition:border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease);
}
.chip:hover{border-color:var(--brand-light);color:var(--brand-deep);background:var(--brand-100);}

/* ============ 痛点卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
@media (max-width:1023px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:639px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}
}
.pain-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:28px;padding:32px 30px 30px 34px;
  box-shadow:var(--sh-sm);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.pain-card::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;
  border-radius:0 3px 3px 0;background:var(--grad);
}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--brand-light);}
.icon-box{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-deep);
  margin-bottom:20px;
}
.icon-box svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.pain-card h3{margin-bottom:10px;}
.pain-card p{font-size:15px;color:var(--ink-3);}

/* ============ 步骤 ============ */
.steps-wrap{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:28px;padding:30px 26px;
  box-shadow:var(--sh-sm);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--brand-light);}
.step-card::after{
  content:"";position:absolute;top:52px;right:-24px;width:24px;
  border-top:2px dashed var(--brand-light);opacity:.7;
}
.step-card:last-child::after{display:none;}
.step-num{
  font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:-.03em;line-height:1;margin-bottom:18px;display:block;
}
.step-card h3{font-size:19px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--ink-3);}
@media (max-width:1023px){
  .steps-wrap{grid-template-columns:repeat(2,1fr);}
  .step-card::after{display:none;}
}
@media (max-width:639px){
  .steps-wrap{grid-template-columns:1fr;}
  .step-card{padding-left:60px;}
  .step-num{position:absolute;left:24px;top:26px;font-size:22px;}
  .step-card::before{
    content:"";position:absolute;left:24px;top:64px;bottom:26px;width:2px;
    background:var(--brand-100);
  }
  .step-card:last-child::before{display:none;}
}

/* ============ 深色数据区 ============ */
.dark-block{
  background:var(--dark-1);
  border-radius:36px;
  padding:64px 40px;
  position:relative;overflow:hidden;
  box-shadow:0 30px 70px rgba(25,20,48,.28);
}
.dark-block::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(198,242,78,.10) 1px,transparent 1px);
  background-size:26px 26px;opacity:.7;pointer-events:none;
}
.dark-block::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;bottom:-180px;
  background:radial-gradient(circle,rgba(109,59,245,.45),transparent 70%);
  pointer-events:none;
}
.dark-block .head{position:relative;z-index:2;max-width:640px;margin-bottom:40px;}
.dark-block h2{color:#fff;margin:16px 0 12px;}
.dark-block .head p{color:rgba(255,255,255,.72);font-size:15px;}
.dark-block .eyebrow{background:rgba(255,255,255,.1);color:#D9CCFF;}
.dark-block .eyebrow::before{background:var(--lime);}
.stat-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  border-radius:22px;padding:26px 24px;
  border:1px solid transparent;
  background:
    linear-gradient(rgba(255,255,255,.08),rgba(255,255,255,.08)) padding-box,
    linear-gradient(120deg,rgba(109,59,245,.9),rgba(255,122,69,.7)) border-box;
  transition:transform .26s var(--ease),background-color .26s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);}
.stat-card b{
  display:block;font-size:38px;font-weight:800;line-height:1.1;
  color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.stat-card span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.78);font-weight:500;}
@media (max-width:900px){
  .dark-block{padding:48px 26px;border-radius:28px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
}

/* ============ 证言 ============ */
.quote-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:28px;padding:34px 28px 28px;
  box-shadow:var(--sh-sm);overflow:hidden;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.quote-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--brand-light);}
.quote-card blockquote{margin:0 0 22px;font-size:15px;color:var(--ink-2);line-height:1.9;}
.quote-person{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;}
.avatar{
  width:42px;height:42px;border-radius:50%;
  background:var(--grad-soft);border:1px solid var(--brand-light);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--brand-deep);
}
.quote-person strong{display:block;font-size:15px;font-weight:700;color:var(--ink);}
.quote-person em{font-style:normal;font-size:13px;color:var(--ink-3);}

/* ============ 资讯列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:1023px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:639px){.post-grid{grid-template-columns:1fr;}}
.post-card{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--line);border-radius:24px;overflow:hidden;
  box-shadow:var(--sh-sm);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--brand-light);}
.post-cover{
  position:relative;aspect-ratio:16/10;background:var(--grad-soft);overflow:hidden;
}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post-badge{
  align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--brand-deep);
  background:var(--brand-100);border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.post-body h3{font-size:17px;line-height:1.55;margin-bottom:10px;}
.post-card:hover .post-body h3{color:var(--brand-deep);}
.post-summary{
  font-size:14px;color:var(--ink-3);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:18px;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:14px;
}
.post-foot svg{width:16px;height:16px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .24s var(--ease);}
.post-card:hover .post-foot svg{transform:translateX(4px);}
.empty-state{
  background:#fff;border:1px dashed var(--brand-light);border-radius:24px;
  padding:56px 24px;text-align:center;color:var(--ink-3);font-size:15px;
}
.list-more{margin-top:36px;text-align:center;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease),background-color .24s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:0 3px 3px 0;background:var(--grad);
  transform:scaleY(0);transform-origin:center;transition:transform .26s var(--ease);
}
.faq-item.open{box-shadow:var(--sh-md);border-color:var(--brand-light);background:#FCFBFF;}
.faq-item.open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 24px 22px 28px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--brand-deep);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .28s var(--ease),background-color .28s var(--ease),border-color .28s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-deep);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-icon::before{width:11px;height:2px;}
.faq-icon::after{width:2px;height:11px;transition:transform .28s var(--ease);}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand-100);border-color:var(--brand-light);}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 60px 24px 28px;font-size:15px;color:var(--ink-3);line-height:1.9;}
@media (max-width:520px){
  .faq-q{font-size:16px;padding:18px 18px 18px 20px;}
  .faq-a p{padding:0 20px 20px;}
}

/* ============ 底部 CTA ============ */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:36px;padding:52px 48px;
  background:var(--grad);
  box-shadow:0 30px 70px rgba(109,59,245,.28);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:640px;}
.cta-text h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-text p{color:rgba(255,255,255,.88);font-size:15px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
.btn-white{background:#fff;color:var(--brand-deep);box-shadow:0 10px 26px rgba(25,20,48,.18);}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(25,20,48,.24);}
.btn-outline-white{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.6);color:#fff;}
.btn-outline-white:hover{background:rgba(255,255,255,.24);transform:translateY(-2px);}
@media (max-width:860px){
  .cta-card{flex-direction:column;align-items:flex-start;padding:40px 26px;border-radius:28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;justify-content:center;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark-1);
  border-radius:32px 32px 0 0;
  margin-top:96px;
  padding:64px 0 0;
  color:rgba(255,255,255,.72);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{color:#fff;justify-content:flex-start;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{
  font-size:14px;color:rgba(255,255,255,.68);
  display:inline-block;
}
.footer-col a:hover{color:var(--brand-100);transform:translateX(2px);}
.footer-note{font-size:14px;color:rgba(255,255,255,.6);line-height:1.9;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8A83A6;
}
.footer-bottom a{color:#8A83A6;}
.footer-bottom a:hover{color:var(--brand-100);}
@media (max-width:900px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{margin-top:56px;padding-top:48px;}
}

/* roulang page: article */
:root{
  --brand:#6D3BF5; --brand-dark:#4C22C9; --brand-light:#8A63FF; --brand-100:#EDE7FF;
  --warm:#FF7A45; --warm-100:#FFE9DF; --lime:#C6F24E;
  --ink:#17141F; --ink-2:#3A3547; --ink-3:#6B6580;
  --line:#E9E6F5; --page:#F6F5FB; --card:#FFFFFF; --night:#191430; --night-2:#241C46;
  --grad:linear-gradient(120deg,#6D3BF5 0%,#A24BFF 45%,#FF7A45 100%);
  --grad-soft:linear-gradient(135deg,#EDE7FF 0%,#FFE9DF 100%);
  --r-s:12px; --r-m:18px; --r-l:28px; --r-xl:36px;
  --sh-s:0 2px 8px rgba(35,20,80,.06);
  --sh-m:0 10px 28px rgba(69,32,160,.10);
  --sh-l:0 24px 60px rgba(69,32,160,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--page);color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease)}
a:hover{color:var(--brand-dark)}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:72px;display:flex;align-items:center;
  background:rgba(246,245,251,.86);border-bottom:1px solid transparent;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--line);box-shadow:var(--sh-s)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.nav-side{display:flex;align-items:center;gap:22px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.02em;white-space:nowrap}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;
  background:var(--grad);color:#fff;font-size:12px;font-weight:700;letter-spacing:0;box-shadow:0 8px 18px rgba(109,59,245,.32)
}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 2px}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease)
}
.nav-link:hover{color:var(--brand-dark)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-dark);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-spacer-m{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
  border-radius:999px;font-weight:600;font-size:15px;line-height:1;height:48px;padding:0 28px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease)
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 32px rgba(109,59,245,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-glow,0 12px 32px rgba(109,59,245,.35));color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand-light);color:var(--brand-dark);background:rgba(237,231,255,.42)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.burger{
  display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;cursor:pointer
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,20,31,.4);opacity:0;pointer-events:none;transition:opacity .2s var(--ease);z-index:70
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;right:0;z-index:80;background:#fff;border-radius:0 0 28px 28px;
  padding:20px 24px 26px;transform:translateY(-112%);transition:transform .3s var(--ease);box-shadow:var(--sh-l)
}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;color:var(--ink-3);line-height:1}
.drawer a.m-item{
  display:block;padding:14px 18px;border-radius:16px;font-size:16px;font-weight:600;color:var(--ink);
  background:#F8F7FD;margin-bottom:10px
}
.drawer a.m-item:hover{background:var(--brand-100);color:var(--brand-dark)}
.drawer .m-cta{background:var(--grad);color:#fff;text-align:center;margin-top:6px;margin-bottom:0}
.drawer .m-cta:hover{color:#fff;background:var(--grad)}

/* ---------- Hero band ---------- */
.art-head{position:relative;overflow:hidden;background:var(--grad-soft);border-bottom:1px solid var(--line)}
.art-head::before{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:linear-gradient(#4C22C9 1px,transparent 1px),linear-gradient(90deg,#4C22C9 1px,transparent 1px);
  background-size:24px 24px
}
.art-head::after{
  content:"";position:absolute;width:520px;height:520px;right:-160px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,59,245,.28),rgba(109,59,245,0) 68%)
}
.art-head .container{position:relative;z-index:2}
.crumb{font-size:14px;color:var(--ink-3);padding:22px 0 0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand-dark)}
.crumb .sep{color:#BFB9D4}
.crumb .now{color:var(--ink);font-weight:600;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.art-title-wrap{padding:18px 0 42px;max-width:880px}
.art-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.78);border:1px solid #DCD3FF;color:var(--brand-dark);font-size:13px;font-weight:600;margin-bottom:16px
}
.art-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--warm)}
.art-h1{
  font-size:42px;font-weight:800;line-height:1.28;color:var(--ink);letter-spacing:-.02em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.art-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px;font-size:14px;color:var(--ink-3)}
.art-meta b{color:var(--ink);font-weight:600}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-s);font-size:13.5px;color:var(--ink-3)
}
.meta-chip svg{width:15px;height:15px;stroke:var(--brand);fill:none;stroke-width:1.6}

/* ---------- Layout ---------- */
.art-main{padding:56px 0 88px}
.art-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;justify-content:space-between;gap:44px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-s)}
.art-card{padding:40px 44px;min-height:420px}
.art-body{font-size:16.5px;line-height:1.9;color:var(--ink-2)}
.art-body>*:first-child{margin-top:0}
.art-body p{margin:0 0 1.35em}
.art-body h2{
  position:relative;font-size:25px;font-weight:700;color:var(--ink);margin:2em 0 .8em;padding-left:16px;line-height:1.45
}
.art-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:999px;background:var(--grad)
}
.art-body h3{font-size:20px;font-weight:700;color:var(--ink);margin:1.7em 0 .6em}
.art-body h4{font-size:17.5px;font-weight:700;color:var(--ink);margin:1.4em 0 .5em}
.art-body a{color:var(--brand-dark);border-bottom:1px solid rgba(109,59,245,.35)}
.art-body a:hover{color:var(--warm);border-bottom-color:var(--warm)}
.art-body strong{color:var(--ink)}
.art-body blockquote{
  margin:1.6em 0;padding:20px 24px;background:#F5F1FF;border-left:4px solid;border-image:var(--grad) 1;
  border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink-2)
}
.art-body blockquote p:last-child{margin-bottom:0}
.art-body img{border-radius:var(--r-m);border:1px solid #D9CFFF;margin:1.4em auto;box-shadow:var(--sh-s)}
.art-body figcaption,.art-body .caption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.art-body ul,.art-body ol{margin:1.2em 0 1.5em;padding-left:2px}
.art-body ul li,.art-body ol li{position:relative;padding-left:26px;margin-bottom:.7em}
.art-body ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:8px;height:8px;border-radius:3px;
  background:var(--grad);transform:rotate(45deg)
}
.art-body ol{counter-reset:olc}
.art-body ol li{counter-increment:olc}
.art-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:7px;
  background:var(--brand-100);color:var(--brand-dark);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center
}
.art-body table{width:100%;border-collapse:separate;border-spacing:0;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.art-body thead th{background:#F5F2FF;color:var(--ink);font-weight:700;text-align:left}
.art-body th,.art-body td{padding:13px 16px;border-bottom:1px solid var(--line)}
.art-body tbody tr:nth-child(even){background:#FBFAFF}
.art-body tbody tr:last-child td{border-bottom:0}
.table-scroll{overflow-x:auto}

/* ---------- Tags / related ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:26px 44px 0}
.tag-chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-dark);font-size:13px;font-weight:600;transition:all .22s var(--ease)
}
.tag-chip:hover{background:var(--brand);color:#fff}
.tag-chip.warm{background:var(--warm-100);color:#B0410F}
.tag-chip.warm:hover{background:var(--warm);color:#fff}
.divider{height:1px;background:var(--line);margin:26px 44px}
.block-title{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink);margin-bottom:18px}
.block-title span.bar{width:5px;height:18px;border-radius:999px;background:var(--grad)}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-m);border-color:var(--brand-light)}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--grad-soft)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .thumb img{transform:scale(1.05)}
.rel-card .rc-body{padding:18px 20px 22px}
.rel-card .rc-body h4{font-size:15.5px;line-height:1.55;margin-bottom:8px}
.rel-card .rc-body p{font-size:13.5px;color:var(--ink-3);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.back-entry{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.arrow-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand-dark);font-size:15px}
.arrow-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;transition:transform .24s var(--ease)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- Sidebar ---------- */
.aside{display:flex;flex-direction:column;gap:22px}
.aside-col{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
.side-card{padding:24px 24px 26px}
.side-card h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{width:6px;height:6px;border-radius:50%;background:var(--warm);display:inline-block}
.toc-list{display:flex;flex-direction:column;gap:4px;max-height:340px;overflow:auto}
.toc-list a{
  display:block;font-size:14px;color:var(--ink-3);padding:7px 12px;border-radius:10px;border-left:2px solid transparent;
  line-height:1.55
}
.toc-list a:hover{background:#F7F5FF;color:var(--brand-dark);border-left-color:var(--brand-light)}
.toc-list a.on{background:var(--brand-100);color:var(--brand-dark);font-weight:600;border-left-color:var(--brand)}
.side-rel{display:flex;flex-direction:column;gap:14px}
.side-rel a{display:flex;gap:12px;align-items:flex-start}
.side-rel .sq{width:58px;height:58px;flex:0 0 58px;border-radius:14px;overflow:hidden;background:var(--grad-soft)}
.side-rel .sq img{width:100%;height:100%;object-fit:cover}
.side-rel .txt strong{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-rel .txt em{font-style:normal;font-size:12.5px;color:var(--ink-3)}
.side-rel a:hover .txt strong{color:var(--brand-dark)}
.side-cta{background:linear-gradient(160deg,#241C46 0%,#191430 100%);color:#EDE9FA;position:relative;overflow:hidden}
.side-cta::after{
  content:"";position:absolute;width:220px;height:220px;right:-90px;bottom:-110px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,59,245,.55),rgba(109,59,245,0) 70%)
}
.side-cta h3{color:#fff;position:relative;z-index:2;margin-bottom:10px}
.side-cta p{font-size:13.5px;color:#B9B2D6;line-height:1.75;position:relative;z-index:2;margin-bottom:18px}
.side-cta .btn{position:relative;z-index:2;width:100%}

/* ---------- Empty state ---------- */
.empty-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:72px 32px;text-align:center;background:#FBFAFF;border:1px dashed #D9CFFF;border-radius:var(--r-m)
}
.empty-card .ic{
  width:64px;height:64px;border-radius:20px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center
}
.empty-card .ic svg{width:28px;height:28px;stroke:var(--brand);fill:none;stroke-width:1.6}
.empty-card h3{font-size:20px}
.empty-card p{color:var(--ink-3);font-size:15px;max-width:44ch}

/* ---------- Bottom CTA ---------- */
.cta-band{padding:0 0 96px}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:52px 56px;
  background:linear-gradient(120deg,#6D3BF5 0%,#A24BFF 45%,#FF7A45 100%);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 26px 60px rgba(109,59,245,.28)
}
.cta-card::after{
  content:"";position:absolute;inset:0;opacity:.12;
  background-image:radial-gradient(circle at 18% 20%,#fff 0,transparent 42%),radial-gradient(circle at 82% 76%,#fff 0,transparent 38%)
}
.cta-card h2{color:#fff;font-size:30px;margin-bottom:12px;position:relative;z-index:2}
.cta-card p{color:rgba(255,255,255,.86);max-width:56ch;position:relative;z-index:2;font-size:15.5px}
.cta-card .btn{position:relative;z-index:2;background:#fff;color:var(--brand-dark);box-shadow:0 14px 34px rgba(20,10,60,.22)}
.cta-card .btn:hover{color:var(--brand-dark);transform:translateY(-2px)}

/* ---------- Footer ---------- */
.site-footer{background:var(--night);color:#B9B2D6;border-radius:32px 32px 0 0;margin-top:24px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:#9E97BE;max-width:34ch}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:#B9B2D6;display:inline-block}
.footer-col ul a:hover{color:var(--brand-100);transform:translateX(-2px)}
.footer-note{font-size:13.5px;line-height:1.85;color:#9E97BE}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:#8A83A6
}
.footer-bottom a{color:#8A83A6}
.footer-bottom a:hover{color:var(--brand-100)}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .art-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
  .art-card{padding:34px 32px}
  .tag-row,.divider{margin-left:32px;margin-right:32px}
  .tag-row{padding-left:0;padding-right:0}
}
@media (max-width:1023px){
  .art-layout{grid-template-columns:minmax(0,1fr)}
  .aside{order:2}
  .aside-col{position:static;flex-direction:row;flex-wrap:wrap}
  .aside-col>.side-card{flex:1 1 280px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .art-title-wrap{padding-bottom:34px}
  .art-h1{font-size:34px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  .nav-side.left{display:none}
  .nav-side.right .nav-link{display:none}
  .nav-side.right .btn{display:none}
  .burger{display:inline-flex}
  .header-spacer-m{display:block;width:44px}
  .container{padding:0 18px}
  .art-main{padding:32px 0 64px}
  .art-card{padding:26px 20px}
  .art-h1{font-size:30px}
  .crumb .now{max-width:32ch}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .divider{margin:20px}
  .tag-row{margin:0;padding:22px 20px 0}
  .cta-band{padding:0 0 64px}
  .cta-card{padding:34px 24px;border-radius:var(--r-l)}
  .cta-card h2{font-size:23px}
  .cta-card .btn{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .site-footer{padding-top:48px;border-radius:24px 24px 0 0}
  .art-body h2{font-size:21px}
}
@media (max-width:520px){
  .art-h1{font-size:26px}
  .rel-grid{gap:16px}
  .meta-chip{height:30px;padding:0 12px}
}

/* roulang page: category1 */
:root{
  --violet:#6D3BF5;
  --violet-deep:#4C22C9;
  --violet-light:#8A63FF;
  --violet-100:#EDE7FF;
  --orange:#FF7A45;
  --orange-100:#FFE9DF;
  --lime:#C6F24E;
  --ink:#17141F;
  --ink-2:#3A3547;
  --ink-3:#6B6580;
  --line:#E9E6F5;
  --bg:#F6F5FB;
  --card:#FFFFFF;
  --dark:#191430;
  --dark-2:#241C46;
  --grad:linear-gradient(120deg,#6D3BF5 0%,#A24BFF 45%,#FF7A45 100%);
  --soft:linear-gradient(120deg,#EDE7FF 0%,#FFE9DF 100%);
  --r-s:12px;
  --r-m:18px;
  --r-l:28px;
  --r-xl:36px;
  --sh-sm:0 2px 8px rgba(35,20,80,.06);
  --sh-md:0 10px 28px rgba(69,32,160,.10);
  --sh-lg:0 24px 60px rgba(69,32,160,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background-color:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(246,245,251,.88);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{
  background:#ffffff;
  box-shadow:0 1px 0 var(--line),0 6px 20px rgba(35,20,80,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
  position:relative;
}
.header-spacer-m{display:none;}
.nav-side{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0;}
.nav-side.left{justify-content:flex-start;}
.nav-side.right{justify-content:flex-end;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:800;
  letter-spacing:-.02em;
  white-space:nowrap;
  flex:0 0 auto;
}
.logo-mark{
  display:inline-grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:11px;
  background:var(--grad);
  color:#fff;
  font-size:12px;
  font-weight:700;
  letter-spacing:0;
  box-shadow:0 8px 20px rgba(109,59,245,.32);
}
.nav-link{
  position:relative;
  padding:6px 2px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:color .22s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--grad);
  transition:width .26s var(--ease);
}
.nav-link:hover{color:var(--violet-deep);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--violet-deep);font-weight:600;}
.nav-link.active::after{width:100%;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s,color .22s,border-color .22s;
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow:0 12px 32px rgba(109,59,245,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(109,59,245,.42);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 20px rgba(109,59,245,.32);}
.btn-ghost{
  background:#fff;
  border-color:var(--line);
  color:var(--ink-2);
}
.btn-ghost:hover{
  border-color:var(--violet-light);
  color:var(--violet-deep);
  background:rgba(237,231,255,.45);
  transform:translateY(-2px);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn:focus-visible{outline:2px solid #fff;outline-offset:2px;box-shadow:0 0 0 4px var(--violet);}
.cta-card .btn-ghost{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.28);
  color:#fff;
}
.cta-card .btn-ghost:hover{
  background:rgba(255,255,255,.16);
  border-color:#fff;
  color:#fff;
}

.burger{
  display:none;
  width:44px;
  height:44px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:border-color .22s var(--ease),background .22s;
}
.burger:hover{border-color:var(--violet-light);}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.burger span::before,.burger span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink);
  transition:transform .24s var(--ease);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
body.nav-open .burger span{background:transparent;}
body.nav-open .burger span::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .burger span::after{transform:translateY(-6px) rotate(-45deg);}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  overflow:hidden;
  background:var(--soft);
  padding:40px 0 56px;
  border-bottom:1px solid rgba(109,59,245,.10);
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(109,59,245,.12) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.55;
  pointer-events:none;
}
.page-head-glow{
  position:absolute;
  width:520px;
  height:520px;
  border-radius:50%;
  top:-240px;
  right:-140px;
  background:radial-gradient(circle,rgba(162,75,255,.30),transparent 62%);
  pointer-events:none;
}
.page-head-inner{position:relative;z-index:1;}
.page-head-top{display:flex;justify-content:flex-end;margin-bottom:26px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);}
.breadcrumb a{transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--violet-deep);}
.breadcrumb .sep{color:#C3BCDC;}
.breadcrumb .current{color:var(--ink);font-weight:600;}
.page-head h1{
  font-size:clamp(32px,4.4vw,54px);
  font-weight:800;
  margin-bottom:18px;
}
.page-head .lead{
  max-width:660px;
  font-size:17px;
  color:var(--ink-3);
  line-height:1.9;
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.72);
  border:1px solid rgba(109,59,245,.20);
  font-size:13px;
  font-weight:500;
  color:var(--violet-deep);
}

/* ============ 指引主体 ============ */
.guide-wrap{padding:72px 0 8px;}
.guide-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:32px;
  align-items:start;
}
.guide-toc{position:sticky;top:96px;}
.toc-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:22px;
  box-shadow:var(--sh-sm);
}
.toc-title{
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--ink-3);
  margin-bottom:14px;
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:4px;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-radius:var(--r-s);
  font-size:14.5px;
  color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.toc-list a:hover{background:var(--violet-100);color:var(--violet-deep);transform:translateX(2px);}
.toc-list a.current{
  background:rgba(109,59,245,.08);
  color:var(--violet-deep);
  font-weight:600;
  box-shadow:inset 3px 0 0 var(--violet);
}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13px;
  line-height:1.8;
  color:var(--ink-3);
}
.toc-note strong{display:block;color:var(--ink);font-size:13.5px;margin-bottom:4px;}

.guide-body{display:flex;flex-direction:column;gap:24px;}
.gcard{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:32px;
  box-shadow:var(--sh-sm);
  scroll-margin-top:96px;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.gcard:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:rgba(109,59,245,.22);}
.gcard-head{display:flex;align-items:center;gap:14px;margin-bottom:18px;}
.gcard-num{
  display:inline-grid;
  place-items:center;
  width:44px;
  height:44px;
  border-radius:14px;
  background:var(--violet-100);
  color:var(--violet-deep);
  font-weight:800;
  font-size:15px;
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.gcard-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;}
.gcard-text{font-size:16.5px;color:var(--ink-2);margin-bottom:20px;}
.check-list{list-style:none;display:grid;gap:12px;}
.check-list li{
  position:relative;
  padding-left:30px;
  font-size:15.5px;
  color:var(--ink-2);
  line-height:1.8;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.55em;
  width:16px;
  height:16px;
  border-radius:6px;
  background:var(--violet-100);
  border:1px solid rgba(109,59,245,.28);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:5px;
  top:.92em;
  width:7px;
  height:3px;
  border-left:2px solid var(--violet);
  border-bottom:2px solid var(--violet);
  transform:rotate(-45deg);
}
.steps{
  list-style:none;
  counter-reset:step;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin-bottom:6px;
}
.steps li{
  position:relative;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:20px 22px 20px 62px;
  transition:border-color .24s var(--ease),background .24s var(--ease),transform .24s var(--ease);
}
.steps li:hover{border-color:var(--violet-light);background:#fff;transform:translateY(-3px);}
.steps li::before{
  counter-increment:step;
  content:"0" counter(step);
  position:absolute;
  left:20px;
  top:20px;
  font-size:14px;
  font-weight:800;
  color:var(--violet);
  font-variant-numeric:tabular-nums;
}
.steps h3{font-size:16.5px;font-weight:700;margin-bottom:6px;}
.steps p{font-size:14.5px;color:var(--ink-3);line-height:1.8;}
.gcard-figure{margin:24px 0 0;}
.gcard-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-m);
  border:1px solid rgba(109,59,245,.18);
}
.gcard-figure figcaption{
  margin-top:12px;
  font-size:13px;
  color:var(--ink-3);
  text-align:center;
}

/* ============ 场景区块 ============ */
.scene-section{padding:84px 0 8px;}
.section-head{max-width:740px;margin-bottom:38px;}
.section-eyebrow{
  display:inline-block;
  padding:6px 14px;
  border-radius:999px;
  background:var(--violet-100);
  color:var(--violet-deep);
  font-size:13px;
  font-weight:600;
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;margin-bottom:14px;}
.section-head p{color:var(--ink-3);font-size:16.5px;}
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.scene-card{
  position:relative;
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:30px;
  box-shadow:var(--sh-sm);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.scene-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--grad);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--violet-light);}
.scene-card.accent-warm::before{background:linear-gradient(180deg,#FF7A45,#FFB38A);}
.scene-card.accent-lime::before{background:linear-gradient(180deg,#6D3BF5,#C6F24E);}
.scene-tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:rgba(109,59,245,.08);
  color:var(--violet-deep);
  font-size:12.5px;
  font-weight:600;
  margin-bottom:14px;
}
.scene-card.accent-warm .scene-tag{background:var(--orange-100);color:#C24B14;}
.scene-card.accent-lime .scene-tag{background:rgba(198,242,78,.28);color:#3F5A00;}
.scene-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.scene-card p{font-size:15px;color:var(--ink-3);line-height:1.85;}
.scene-stat{
  display:flex;
  align-items:baseline;
  gap:8px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--ink-3);
}
.scene-stat b{
  font-size:24px;
  font-weight:800;
  color:var(--violet-deep);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.scene-card.accent-warm .scene-stat b{color:#C24B14;}
.scene-card.accent-lime .scene-stat b{color:#4C6B00;}

/* ============ 底部 CTA ============ */
.cta-section{padding:80px 0 88px;}
.cta-card{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  padding:48px 52px;
  border-radius:var(--r-xl);
  background:linear-gradient(120deg,#241C46 0%,#191430 58%,#3A2069 100%);
  color:#fff;
  box-shadow:var(--sh-lg);
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-90px;
  bottom:-170px;
  width:380px;
  height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(109,59,245,.55),transparent 65%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:600px;}
.cta-text h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin-bottom:12px;}
.cta-text p{font-size:15.5px;color:rgba(255,255,255,.74);line-height:1.9;}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:#fff;
  border-radius:32px 32px 0 0;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand p{
  max-width:330px;
  font-size:14.5px;
  line-height:1.9;
  color:#A79FC4;
}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  display:inline-block;
  font-size:14.5px;
  color:#A79FC4;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--violet-100);transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.9;color:#A79FC4;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:16px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;
  color:#8A83A6;
}
.footer-bottom a{color:#8A83A6;transition:color .2s var(--ease);}
.footer-bottom a:hover{color:var(--violet-100);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .header-spacer-m{display:block;flex:1 1 0;}
  .nav-side.left{display:none;}
  .nav-side.right{flex:1 1 0;justify-content:flex-end;gap:12px;}
  .nav-side.right .nav-link,
  .nav-side.right .btn{display:none;}
  .burger{display:inline-flex;}
  body.nav-open{overflow:hidden;}
  body.nav-open::before{
    content:"";
    position:fixed;
    inset:0;
    background:rgba(23,20,31,.35);
    z-index:40;
  }
  body.nav-open .header-inner{
    flex-wrap:wrap;
    min-height:72px;
    padding-top:10px;
    padding-bottom:16px;
  }
  body.nav-open .nav-side.left{
    order:5;
    display:flex;
    flex:1 0 100%;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    margin-top:14px;
    padding-top:14px;
    border-top:1px solid var(--line);
  }
  body.nav-open .nav-side.left .nav-link{
    padding:14px 18px;
    border-radius:var(--r-m);
    background:var(--bg);
    font-size:16px;
    font-weight:500;
  }
  body.nav-open .nav-side.left .nav-link::after{display:none;}
  body.nav-open .nav-side.left .nav-link.active{
    background:var(--violet-100);
    color:var(--violet-deep);
  }
  .guide-layout{grid-template-columns:1fr;}
  .guide-toc{position:static;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc-list a{
    padding:8px 14px;
    border-radius:999px;
    background:var(--bg);
    font-size:14px;
  }
  .toc-note{display:none;}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-card{padding:40px 34px;}
}

@media (max-width:767px){
  .container{padding:0 18px;}
  .page-head{padding:28px 0 40px;}
  .page-head-top{justify-content:flex-start;margin-bottom:20px;}
  .page-head .lead{font-size:16px;}
  .guide-wrap{padding:48px 0 0;}
  .gcard{padding:24px;border-radius:22px;}
  .steps{grid-template-columns:1fr;}
  .gcard-figure img{aspect-ratio:4/3;}
  .scene-section{padding:56px 0 0;}
  .scene-grid{grid-template-columns:1fr;}
  .cta-section{padding:56px 0 64px;}
  .cta-card{
    flex-direction:column;
    align-items:flex-start;
    padding:32px 24px;
    border-radius:var(--r-l);
  }
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding:48px 0 24px;border-radius:24px 24px 0 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:520px){
  .logo{font-size:16px;}
  .logo-mark{width:30px;height:30px;border-radius:10px;font-size:11px;}
  .page-head h1{font-size:32px;}
  .gcard-head{gap:12px;}
  .gcard-num{width:38px;height:38px;border-radius:12px;font-size:13px;}
  .gcard-head h2{font-size:21px;}
}

/* roulang page: category2 */
:root{
  --brand:#6D3BF5;
  --brand-deep:#4C22C9;
  --brand-light:#8A63FF;
  --brand-100:#EDE7FF;
  --warm:#FF7A45;
  --warm-100:#FFE9DF;
  --lime:#C6F24E;
  --ink:#17141F;
  --ink-2:#3A3547;
  --ink-3:#6B6580;
  --line:#E9E6F5;
  --page:#F6F5FB;
  --card:#FFFFFF;
  --night:#191430;
  --night-2:#241C46;
  --grad:linear-gradient(120deg,#6D3BF5 0%,#A24BFF 45%,#FF7A45 100%);
  --grad-soft:linear-gradient(140deg,#EDE7FF 0%,#FFE9DF 100%);
  --r-sm:12px;--r-md:18px;--r-lg:28px;--r-xl:36px;
  --sh-sm:0 2px 8px rgba(35,20,80,.06);
  --sh-md:0 10px 28px rgba(69,32,160,.10);
  --sh-lg:0 24px 60px rgba(69,32,160,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background-color:var(--page);
  background-image:
    radial-gradient(900px 420px at 8% -6%,rgba(109,59,245,.10),transparent 60%),
    radial-gradient(800px 400px at 96% 4%,rgba(255,122,69,.10),transparent 62%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.28}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,251,.75);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-sm);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.header-spacer-m{display:none}
.nav-side{display:flex;align-items:center;gap:22px}
.nav-side.left{flex:1 1 0;justify-content:flex-start}
.nav-side.right{flex:1 1 0;justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left center;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--brand-deep)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-deep);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--ink);
  white-space:nowrap;
}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;
  background:var(--grad);color:#fff;font-size:14px;font-weight:700;letter-spacing:0;
  box-shadow:0 8px 20px rgba(109,59,245,.32);
}
.logo:hover{color:var(--brand-deep)}
.burger{
  display:none;width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;
}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 32px rgba(109,59,245,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(109,59,245,.44)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--brand-light);color:var(--brand-deep);background:rgba(237,231,255,.5)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-on-dark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.32);color:#fff}
.btn-on-dark:hover{background:rgba(255,255,255,.2);color:#fff}
.arrow-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-deep);font-size:15px;
}
.arrow-link svg{transition:transform .24s var(--ease)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,20,31,.42);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:#fff;border-radius:0 0 var(--r-lg) var(--r-lg);
  padding:18px 20px 24px;
  box-shadow:var(--sh-lg);
  transform:translateY(-104%);
  transition:transform .26s var(--ease),opacity .24s var(--ease);
  opacity:0;
}
.mobile-drawer.open{transform:translateY(0);opacity:1}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--ink-3)}
.drawer-link{
  display:block;padding:15px 18px;border-radius:16px;font-size:16px;font-weight:600;
  color:var(--ink-2);background:#F8F7FD;margin-bottom:10px;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-deep)}
.drawer-link.active{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(109,59,245,.28)}
.drawer-cta{margin-top:16px;width:100%}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--grad-soft);
  border-radius:0 0 var(--r-xl) var(--r-xl);
  padding:64px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.14;mix-blend-mode:luminosity;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(109,59,245,.18) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:22px}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand-deep)}
.crumb .sep{color:#B9B2CF}
.crumb .current{color:var(--ink);font-weight:600}
.hero-title{
  font-size:54px;font-weight:800;letter-spacing:-.03em;line-height:1.12;margin-bottom:18px;
  background:linear-gradient(120deg,#17141F 0%,#3A1F86 60%,#4C22C9 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;max-width:640px;color:var(--ink-2)}
.hero-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.mini-badge{
  display:flex;align-items:baseline;gap:10px;
  background:rgba(255,255,255,.86);border:1px solid rgba(109,59,245,.16);
  border-radius:16px;padding:12px 18px;box-shadow:var(--sh-sm);
}
.mini-badge b{font-size:20px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.mini-badge span{font-size:13px;color:var(--ink-3);font-weight:500}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:36px;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-deep);background:var(--brand-100);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;letter-spacing:.02em;
}

/* ---------- quick answers strip ---------- */
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.strip-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:30px 28px 30px 32px;box-shadow:var(--sh-sm);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.strip-card::before{
  content:"";position:absolute;left:0;top:28px;bottom:28px;width:3px;border-radius:3px;background:var(--grad);
}
.strip-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--brand-light)}
.strip-card h3{font-size:18px;margin-bottom:10px}
.strip-card p{font-size:14.5px;color:var(--ink-3);line-height:1.8}
.strip-num{
  font-size:26px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  display:block;margin-bottom:6px;
}

/* ---------- feature rows ---------- */
.feature-list{display:flex;flex-direction:column;gap:32px}
.feature-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:32px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-sm);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.feature-row:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--brand-light)}
.feature-row.rev .feature-media{order:2}
.feature-media{position:relative;border-radius:var(--r-md);overflow:hidden;border:1px solid rgba(109,59,245,.18)}
.feature-media img{width:100%;height:300px;object-fit:cover;border-radius:0}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(25,20,48,0) 55%,rgba(25,20,48,.34) 100%);
}
.feature-body{padding:6px 8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:var(--warm);
  background:var(--warm-100);border-radius:999px;padding:5px 13px;margin-bottom:14px;
}
.feature-body h3{font-size:23px;margin-bottom:12px}
.feature-body p{font-size:15.5px;color:var(--ink-3);margin-bottom:16px}
.point-list{display:flex;flex-direction:column;gap:10px}
.point-list li{
  position:relative;padding-left:24px;font-size:15px;color:var(--ink-2);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:9px;height:9px;border-radius:3px;
  background:var(--grad);opacity:.9;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);overflow:hidden;position:relative;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);
  opacity:0;transition:opacity .24s var(--ease);
}
.faq-item:hover{border-color:var(--brand-light)}
.faq-item.open{border-color:rgba(109,59,245,.35);box-shadow:var(--sh-md);background:#FCFBFF}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .26s var(--ease),border-color .26s var(--ease),background-color .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-deep);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px;transition:opacity .24s var(--ease)}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand-100);border-color:transparent}
.faq-item.open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 24px 22px;font-size:15.5px;color:var(--ink-3)}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#191430 0%,#241C46 55%,#3A1F86 100%);
  border-radius:var(--r-xl);padding:56px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:var(--sh-lg);
}
.cta-card::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.35) 0%,rgba(109,59,245,.20) 45%,transparent 70%);
}
.cta-text{position:relative;z-index:2;max-width:620px}
.cta-text h2{color:#fff;font-size:33px;margin-bottom:14px}
.cta-text p{color:#C7C1DF;font-size:16px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;background:var(--night);border-radius:32px 32px 0 0;color:#B9B2CF;padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;
}
.site-footer .logo{color:#fff;font-size:17px;margin-bottom:18px}
.site-footer .logo:hover{color:var(--brand-100)}
.footer-brand p{font-size:14.5px;line-height:1.9;color:#9E97B8;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14.5px;color:#B9B2CF;display:inline-block}
.footer-col a:hover{color:var(--brand-100);transform:translateX(2px)}
.footer-note{font-size:14px;line-height:1.9;color:#9E97B8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#8A83A6;
}
.footer-bottom a{color:#8A83A6}
.footer-bottom a:hover{color:var(--brand-100)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .strip-grid{grid-template-columns:1fr;gap:18px}
  .feature-row{grid-template-columns:1fr;gap:24px}
  .feature-row.rev .feature-media{order:0}
  .feature-media img{height:260px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:44px 36px;gap:28px}
  .section{padding:72px 0}
  .section-head h2{font-size:30px}
}
@media (max-width:767px){
  .header-spacer-m{display:block;width:44px;flex:0 0 44px}
  .nav-side.left{display:none}
  .nav-side.right .nav-link,.nav-side.right .btn{display:none}
  .burger{display:flex}
  .header-inner{gap:8px}
  .hero-title{font-size:34px}
  .hero-sub{font-size:16px}
  .page-hero{padding:44px 0 56px;border-radius:0 0 var(--r-lg) var(--r-lg)}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head{margin-bottom:34px}
  .section-head h2{font-size:25px}
  .strip-card{padding:24px 22px 24px 26px}
  .feature-row{padding:20px}
  .feature-media img{height:210px}
  .feature-body h3{font-size:20px}
  .faq-q{font-size:16px;padding:18px 18px}
  .faq-a p{padding:0 18px 20px}
  .cta-card{padding:36px 24px;border-radius:var(--r-lg)}
  .cta-text h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{margin-top:64px;padding-top:48px}
  .btn{width:auto}
  .cta-actions .btn{flex:1 1 auto;min-width:150px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero-badges{gap:10px}
  .mini-badge{padding:10px 14px;width:100%}
  .btn{width:100%}
  .cta-actions{width:100%;flex-direction:column}
}