/* roulang page: index */
:root{
  --c-primary:#6C4CF1;
  --c-mid:#A63BFF;
  --c-accent:#FF4D9D;
  --c-mint:#17D6B4;
  --c-amber:#FFC53D;
  --c-danger:#F2555A;
  --c-ink:#17142A;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A63BFF 45%,#FF4D9D 100%);

  --bg-page:#F7F6FC;
  --bg-soft:#EFECFB;
  --bg-card:#FFFFFF;

  --t1:#17142A;
  --t2:#4B4763;
  --t3:#8A85A3;
  --line:#E6E2F5;

  --sh1:0 2px 8px rgba(23,20,42,.05);
  --sh2:0 12px 32px rgba(76,52,180,.10);
  --sh3:0 24px 64px rgba(76,52,180,.16);

  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;

  --container:1200px;
  --content:1080px;

  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--t2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{color:var(--t1);font-weight:700;}
h1{font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:800;letter-spacing:-.5px;}
h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{font-size:16.5px;line-height:1.9;}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:6px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:72px;
  z-index:80;
  background:rgba(247,246,252,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh2);background:rgba(247,246,252,.95);}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(108,76,241,.32);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:16px;font-weight:800;color:var(--t1);letter-spacing:.2px;white-space:nowrap;}
.brand-text span{color:var(--c-primary);}

.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}

.nav-right{display:flex;align-items:center;gap:14px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 26px rgba(108,76,241,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--t1);border-color:var(--line);box-shadow:var(--sh1);}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:#D8D0F5;color:var(--c-primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px;}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .2s ease;}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{
  position:fixed;inset:72px 0 0 0;z-index:70;
  background:#fff;
  padding:28px 24px calc(28px + env(safe-area-inset-bottom));
  display:none;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{display:flex;}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 2px;font-size:18px;font-weight:600;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.active{color:var(--c-primary);}
.drawer a.drawer-link small{font-size:13px;color:var(--t3);font-weight:400;}
.drawer .drawer-cta{margin-top:26px;}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  padding:150px 0 84px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,59,255,.28),rgba(255,77,157,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-200px;left:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,214,180,.20),rgba(108,76,241,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh1);
  font-size:13.5px;color:var(--t2);margin-bottom:22px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--c-mint);display:block;}
.hero h1{margin-bottom:20px;}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{font-size:17.5px;line-height:1.9;color:var(--t2);max-width:620px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}

.badges{
  display:flex;gap:16px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:none;
}
.badges::-webkit-scrollbar{display:none;}
.badge{
  flex:1 0 168px;min-width:168px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 18px 16px;box-shadow:var(--sh1);
  position:relative;overflow:hidden;
}
.badge::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:8px;
  border-radius:0 8px 8px 0;background:var(--grad-brand);
}
.badge strong{
  display:block;font-size:30px;font-weight:800;color:var(--t1);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.badge span{display:block;font-size:13px;color:var(--t3);margin-top:6px;}

.hero-visual{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--sh3);border:1px solid rgba(255,255,255,.6);
  aspect-ratio:4/4.2;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(108,76,241,.35) 0%,rgba(23,20,42,.55) 78%);
}
.hero-visual-card{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:3;
  background:rgba(255,255,255,.94);
  border-radius:var(--r-lg);padding:18px 20px;
  backdrop-filter:blur(6px);box-shadow:var(--sh2);
}
.hero-visual-card h4{margin-bottom:6px;}
.hero-visual-card p{font-size:14px;color:var(--t2);line-height:1.7;}

/* ---------- 通用区块 ---------- */
section{scroll-margin-top:88px;}
.section{padding:96px 0;}
.section-soft{background:var(--bg-soft);}
.section-line{border-top:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:52px;}
.section-tag{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary);background:rgba(108,76,241,.10);
  border-radius:var(--r-pill);padding:5px 14px;margin-bottom:16px;
}
.section-head h2{margin-bottom:16px;}
.section-head p{font-size:16.5px;color:var(--t2);}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.text-link{
  position:relative;font-size:15px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;
}
.text-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1.5px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.text-link:hover::after{transform:scaleX(1);}

/* ---------- 卖点 2x2 交错 ---------- */
.feature-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.feature-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#DCD4F8;}
.feature-grid .feature-card:nth-child(2){margin-top:34px;}
.feature-grid .feature-card:nth-child(4){margin-top:34px;}
.feature-icon{
  width:44px;height:44px;border-radius:14px;background:var(--bg-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  color:var(--c-primary);
}
.feature-icon svg{width:22px;height:22px;}
.feature-card h3{margin-bottom:10px;}
.feature-card p{font-size:15px;line-height:1.8;color:var(--t2);}

/* ---------- 流程 ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:26px;position:relative;
}
.step{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.step-img{aspect-ratio:16/10;overflow:hidden;}
.step-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.step:hover .step-img img{transform:scale(1.04);}
.step-body{padding:22px 22px 26px;}
.step-num{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);margin-bottom:10px;
}
.step-num i{width:9px;height:9px;border-radius:50%;background:var(--c-mint);display:block;}
.step-body h3{font-size:18px;margin-bottom:8px;}
.step-body p{font-size:14.5px;line-height:1.8;color:var(--t2);}
.step::after{
  content:"";position:absolute;top:74px;right:-24px;width:24px;
  border-top:1px dashed #C9C0EE;
}
.steps .step:last-child::after{display:none;}

/* ---------- 数据证据 ---------- */
.proof{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.proof-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.proof-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh1);
}
.proof-item strong{
  display:block;font-size:42px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.proof-item span{display:block;font-size:14px;color:var(--t2);margin-top:10px;}
.chip-amber{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-amber);color:#5A3D00;
  font-size:12.5px;font-weight:600;border-radius:var(--r-pill);
  padding:5px 13px;
}
.note-list{margin-top:22px;}
.note-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--t2);margin-bottom:10px;
}
.note-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--c-mint);
}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:#DCD4F8;}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.tag{
  align-self:flex-start;
  background:rgba(108,76,241,.10);color:#5533D6;
  font-size:12.5px;font-weight:600;border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:14px;
}
.news-title{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;color:var(--t1);}
.news-title a{transition:color .2s ease;}
.news-title a:hover{color:var(--c-primary);}
.news-desc{
  font-size:15px;line-height:1.75;color:var(--t2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);
  border-top:1px solid var(--line);padding-top:14px;
}
.news-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC8EA;}
.news-meta a{color:var(--c-primary);font-weight:600;transition:opacity .2s ease;}
.news-meta a:hover{opacity:.75;}
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:64px 24px;text-align:center;box-shadow:var(--sh1);
}
.empty-state svg{width:44px;height:44px;color:var(--t3);margin:0 auto 16px;}
.empty-state p{font-size:15px;color:var(--t3);}

/* ---------- 方案 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-xl);padding:34px 30px;box-shadow:var(--sh1);
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.price-card.featured{
  border:2px solid transparent;
  background:
    linear-gradient(#fff,#fff) padding-box,
    var(--grad-brand) border-box;
  box-shadow:var(--sh3);
}
.price-flag{
  position:absolute;top:-14px;left:30px;
  background:var(--c-amber);color:#5A3D00;
  font-size:12.5px;font-weight:700;border-radius:var(--r-pill);padding:5px 14px;
}
.price-card h3{margin-bottom:6px;}
.price-desc{font-size:14.5px;color:var(--t3);margin-bottom:20px;}
.price-num{
  font-size:34px;font-weight:800;color:var(--t1);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.price-num small{font-size:14px;font-weight:500;color:var(--t3);margin-left:6px;}
.price-line{height:1px;background:var(--line);margin:22px 0;}
.price-list{flex:1;margin-bottom:26px;}
.price-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--t2);margin-bottom:12px;line-height:1.7;
}
.price-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:11px;height:6px;
  border-left:2px solid var(--c-mint);border-bottom:2px solid var(--c-mint);
  transform:rotate(-45deg);
}

/* ---------- FAQ ---------- */
.faq-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 28px;font-size:17px;font-weight:600;color:var(--t1);
  transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--c-primary);background:#FBFAFF;}
.faq-q .ic{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:var(--bg-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;font-weight:600;
  transition:transform .2s ease,background .2s ease;
}
.faq-item.open .faq-q .ic{transform:rotate(180deg);background:rgba(108,76,241,.14);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{padding:0 28px 26px;font-size:15px;line-height:1.85;color:var(--t2);max-width:900px;}

/* ---------- 最终 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,rgba(108,76,241,.10),rgba(255,77,157,.10));
  border:1px solid var(--line);border-radius:var(--r-xl);
  padding:56px 48px;display:flex;align-items:center;justify-content:space-between;
  gap:36px;flex-wrap:wrap;box-shadow:var(--sh1);
}
.cta-band h2{margin-bottom:12px;}
.cta-band p{font-size:16px;color:var(--t2);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#17142A;color:#B8B2D6;padding:72px 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand .brand-text{color:#fff;}
.footer-grid p{font-size:14.5px;line-height:1.8;color:#B8B2D6;max-width:320px;}
.footer-grid h4{color:#fff;font-size:15.5px;margin-bottom:18px;}
.footer-grid li{margin-bottom:12px;}
.footer-grid li a{font-size:14.5px;color:#B8B2D6;transition:color .2s ease;}
.footer-grid li a:hover{color:#fff;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:24px 0 32px;flex-wrap:wrap;font-size:13.5px;color:#8E88AE;
}
.footer-bottom a{color:#B8B2D6;transition:color .2s ease;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:32px;z-index:60;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 26px;border-radius:var(--r-pill);
  background:var(--grad-brand);color:#fff;font-size:15.5px;font-weight:600;
  box-shadow:var(--sh3);
  transition:transform .22s ease,filter .22s ease;
}
.float-cta:hover{transform:translateY(-2px);filter:brightness(1.07);}
.float-cta:active{transform:translateY(1px);}
.float-cta svg{width:18px;height:18px;}

.to-top{
  position:fixed;right:24px;bottom:98px;z-index:59;
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh2);
  display:none;align-items:center;justify-content:center;color:var(--t1);
}
.to-top.show{display:flex;}
.to-top:hover{color:var(--c-primary);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 20px;}
  .nav-links{gap:22px;}
  .hero-grid{gap:40px;}
}
@media (max-width:992px){
  .nav-links,.nav-right .btn{display:none;}
  .burger{display:flex;}
  .hero{padding:128px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{aspect-ratio:16/10;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-grid .feature-card:nth-child(2),
  .feature-grid .feature-card:nth-child(4){margin-top:0;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .proof{grid-template-columns:1fr;gap:36px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .hero{padding:112px 0 56px;}
  h1{font-size:clamp(28px,7.6vw,38px);}
  h2{font-size:clamp(23px,6vw,30px);}
  .news-grid{grid-template-columns:1fr;}
  .proof-list{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-band{padding:36px 24px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .faq-q{padding:20px;font-size:16px;}
  .faq-a-inner{padding:0 20px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta{
    left:0;right:0;bottom:0;height:auto;
    padding:15px 20px calc(15px + env(safe-area-inset-bottom));
    border-radius:0;justify-content:center;
    box-shadow:0 -8px 24px rgba(76,52,180,.18);
  }
  .float-cta:hover{transform:none;}
  .to-top{bottom:86px;right:16px;width:42px;height:42px;}
  .site-footer{padding-top:56px;}
  .footer-bottom{padding-bottom:96px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .badge{flex:0 0 150px;min-width:150px;}
  .badge strong{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .price-card{padding:28px 22px;}
}

/* roulang page: article */
:root{
  --c-primary:#6C4CF1;
  --c-mid:#A63BFF;
  --c-accent:#FF4D9D;
  --c-mint:#17D6B4;
  --c-amber:#FFC53D;
  --c-danger:#F2555A;
  --c-ink:#17142A;
  --grad-brand:linear-gradient(120deg,#6C4CF1,#A63BFF 45%,#FF4D9D);
  --bg-page:#F7F6FC;
  --bg-soft:#EFECFB;
  --bg-card:#FFFFFF;
  --t1:#17142A;
  --t2:#4B4763;
  --t3:#8A85A3;
  --line:#E6E2F5;
  --sh1:0 2px 8px rgba(23,20,42,.05);
  --sh2:0 12px 32px rgba(76,52,180,.10);
  --sh3:0 24px 64px rgba(76,52,180,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --container:1200px;
  --read:760px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--t2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--t1);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--t1);}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(166,59,255,.18);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.grad-text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,246,252,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(108,76,241,.32);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:17px;font-weight:800;color:var(--t1);letter-spacing:.2px;white-space:nowrap;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--t2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:14px;}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-card);flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .25s ease;}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 22px rgba(108,76,241,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.06);}
.btn-ghost{background:var(--bg-card);color:var(--t1);border:1px solid var(--line);box-shadow:var(--sh1);}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(108,76,241,.45);transform:translateY(-2px);box-shadow:var(--sh2);}
.btn:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:72px 0 0;z-index:110;
  background:rgba(255,255,255,.98);backdrop-filter:blur(10px);
  padding:24px;transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .24s ease,transform .24s ease;overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a.drawer-link{
  display:block;padding:18px 4px;font-size:19px;font-weight:600;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.active{color:var(--c-primary);}
.drawer .btn{width:100%;margin-top:24px;}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--bg-page);border-bottom:1px solid var(--line);}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:16px 0;font-size:13px;color:var(--t3);
}
.crumb a{color:var(--t3);font-size:13px;}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C9C4DE;}

/* ============ 文章头部 ============ */
.article-head{padding:56px 0 32px;background:var(--bg-page);}
.article-head-inner{max-width:var(--read);margin:0 auto;}
.article-chip{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(108,76,241,.10);color:#5B39D6;font-size:13px;font-weight:600;
}
.article-chip i{width:6px;height:6px;border-radius:50%;background:var(--c-mint);display:inline-block;}
.article-head h1{
  margin:18px 0 20px;font-size:clamp(28px,4vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.4px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13px;color:var(--t3);padding-bottom:24px;border-bottom:1px solid var(--line);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9C4DE;display:inline-block;}
.article-meta strong{color:var(--t2);font-weight:600;}

/* ============ 正文 ============ */
.article-wrap{padding:40px 0 88px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,var(--read)) 300px;gap:56px;justify-content:center;align-items:start;
}
.article-body{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);padding:44px 48px;font-size:17px;line-height:1.95;color:var(--t2);
}
.article-body>*+*{margin-top:20px;}
.article-body h2{
  position:relative;margin-top:48px;padding-left:18px;
  font-size:clamp(21px,2.4vw,26px);line-height:1.4;font-weight:700;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:1.05em;border-radius:3px;background:var(--grad-brand);
}
.article-body h3{margin-top:32px;font-size:19px;line-height:1.5;font-weight:600;}
.article-body h4{margin-top:24px;font-size:17px;font-weight:600;}
.article-body p{margin-top:20px;}
.article-body ul,.article-body ol{margin-top:18px;padding-left:0;}
.article-body ul li{position:relative;padding-left:22px;margin-top:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--c-mint);
}
.article-body ol{counter-reset:olc;list-style:none;}
.article-body ol li{position:relative;padding-left:34px;margin-top:12px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.18em;
  width:22px;height:22px;border-radius:50%;background:rgba(108,76,241,.12);color:#5B39D6;
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin-top:24px;padding:18px 22px;background:var(--bg-soft);
  border-left:3px solid var(--c-primary);border-radius:var(--r-md);color:var(--t2);
}
.article-body blockquote p{margin:0;}
.article-body img{border-radius:var(--r-md);margin:28px auto 0;box-shadow:var(--sh1);}
.article-body figure{margin:28px 0 0;}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:12px;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body table{
  width:100%;border-collapse:collapse;margin-top:24px;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--bg-soft);color:var(--t1);font-weight:600;}
.article-body code{
  background:var(--bg-soft);border-radius:6px;padding:2px 6px;font-size:14px;
  font-family:ui-monospace,Menlo,Consolas,monospace;color:#5B39D6;
}
.article-body pre{
  background:#17142A;color:#EDE9FF;border-radius:var(--r-md);padding:18px 20px;margin-top:24px;
  overflow-x:auto;font-size:14px;line-height:1.8;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.article-empty{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);padding:56px 32px;text-align:center;
}
.article-empty .ico{
  width:56px;height:56px;border-radius:18px;background:var(--bg-soft);margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.article-empty h2{font-size:22px;margin-bottom:12px;}
.article-empty p{font-size:15px;color:var(--t3);margin-bottom:24px;}

/* ============ 侧栏 ============ */
.side-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);padding:24px;
}
.side-card+.side-card{margin-top:20px;}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;}
.side-list li+li{border-top:1px solid var(--line);}
.side-list a{display:flex;align-items:flex-start;gap:10px;padding:13px 0;font-size:14px;line-height:1.7;color:var(--t2);}
.side-list a:hover{color:var(--c-primary);}
.side-list .num{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:rgba(108,76,241,.10);
  color:#5B39D6;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.side-note{font-size:14px;line-height:1.85;color:var(--t2);}
.side-note strong{color:var(--t1);}
.side-cta{
  display:block;text-align:center;margin-top:16px;height:44px;line-height:44px;
  border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-size:14px;font-weight:600;
  box-shadow:0 8px 20px rgba(108,76,241,.24);
}
.side-cta:hover{color:#fff;filter:brightness(1.06);}

/* ============ 标签 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--bg-soft);color:#5B39D6;font-size:13px;font-weight:500;
  border:1px solid transparent;transition:all .2s ease;
}
.tag:hover{background:rgba(108,76,241,.14);border-color:rgba(108,76,241,.35);color:#4B29C9;}

/* ============ 区块通用 ============ */
.section{padding:88px 0;}
.section-soft{background:var(--bg-soft);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#5B39D6;
  background:rgba(108,76,241,.10);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,3.2vw,36px);line-height:1.25;font-weight:700;}
.section-head p{margin-top:14px;font-size:16px;color:var(--t2);line-height:1.85;}

/* ============ 推荐卡 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(108,76,241,.30);}
.post-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.post-card:hover .thumb img{transform:scale(1.04);}
.post-card .body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.post-card .cat{
  align-self:flex-start;height:26px;line-height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(108,76,241,.10);color:#5B39D6;font-size:12px;font-weight:600;margin-bottom:12px;
}
.post-card h3{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover h3{color:var(--c-primary);}
.post-card .desc{
  margin-top:10px;font-size:14px;line-height:1.75;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .meta{
  margin-top:auto;padding-top:18px;font-size:13px;color:var(--t3);
  display:flex;align-items:center;gap:10px;
}
.post-card .meta .dot{width:4px;height:4px;border-radius:50%;background:#C9C4DE;}

/* ============ CTA 条 ============ */
.cta-bar{
  background:linear-gradient(120deg,rgba(108,76,241,.10),rgba(255,77,157,.10));
  border:1px solid var(--line);border-radius:var(--r-xl);
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh1);
}
.cta-bar h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;}
.cta-bar p{margin-top:12px;font-size:15px;color:var(--t2);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:32px;z-index:130;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 26px;
  border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh3);transition:transform .22s ease,filter .22s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.float-cta svg{width:18px;height:18px;}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:100px;z-index:129;
  width:44px;height:44px;border-radius:50%;background:var(--bg-card);border:1px solid var(--line);
  box-shadow:var(--sh2);display:flex;align-items:center;justify-content:center;color:var(--t2);
  opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;
}
.to-top.is-show{opacity:1;pointer-events:auto;}
.to-top:hover{color:var(--c-primary);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{background:#17142A;color:#BDB7D6;padding:64px 0 28px;}
.site-footer .footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-text{color:#fff;font-size:17px;font-weight:800;}
.site-footer .brand-text span{color:#B79BFF;}
.site-footer p{font-size:14px;line-height:1.85;color:#A9A3C4;max-width:360px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.site-footer ul li{margin-bottom:12px;font-size:14px;color:#A9A3C4;}
.site-footer ul li a{color:#A9A3C4;font-size:14px;}
.site-footer ul li a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:#8A85A3;
}
.footer-bottom a{color:#B79BFF;font-size:13px;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,var(--read)) 280px;gap:36px;}
}
@media (max-width:992px){
  .nav-links{display:none;}
  .burger{display:flex;}
  .nav-right .btn-sm{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:72px 0;}
  .site-footer .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:36px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .article-body{padding:28px 22px;font-size:16px;}
  .article-head{padding:36px 0 24px;}
  .article-wrap{padding:28px 0 64px;}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-bar{padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;justify-content:center;height:auto;
    padding:15px 20px calc(15px + env(safe-area-inset-bottom));
    border-radius:0;box-shadow:0 -8px 28px rgba(76,52,180,.22);
  }
  .to-top{display:none;}
  .site-footer{padding-bottom:96px;}
  body{padding-bottom:0;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  .brand-text{font-size:15px;}
  .article-meta{font-size:12px;gap:8px 12px;}
  .article-chip{height:28px;padding:0 12px;}
  .site-footer .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
}

/* roulang page: category1 */
:root{
  --c-primary:#6C4CF1;
  --c-mid:#A63BFF;
  --c-accent:#FF4D9D;
  --c-mint:#17D6B4;
  --c-amber:#FFC53D;
  --c-danger:#F2555A;
  --ink-deep:#17142A;
  --grad-brand:linear-gradient(120deg,#6C4CF1,#A63BFF 45%,#FF4D9D);
  --grad-soft:linear-gradient(120deg,rgba(108,76,241,.10),rgba(255,77,157,.10));
  --bg-page:#F7F6FC;
  --bg-soft:#EFECFB;
  --bg-card:#FFFFFF;
  --t1:#17142A;
  --t2:#4B4763;
  --t3:#8A85A3;
  --line:#E6E2F5;
  --sh1:0 2px 8px rgba(23,20,42,.05);
  --sh2:0 12px 32px rgba(76,52,180,.10);
  --sh3:0 24px 64px rgba(76,52,180,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --container:1200px;
  --ff:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:72px;
  font-family:var(--ff);
  font-size:16.5px;
  line-height:1.9;
  color:var(--t2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.25;}
h1{font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:800;}
h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 18px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(166,59,255,.18);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.narrow{max-width:1080px;}
section{scroll-margin-top:88px;}
.section{padding:96px 0;}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);background:rgba(108,76,241,.08);border:1px solid rgba(108,76,241,.16);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad-brand);}
.lead{font-size:17px;color:var(--t2);line-height:1.9;}

/* ---------- Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;height:72px;z-index:90;background:rgba(247,246,252,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:800;font-size:18px;letter-spacing:.2px;}
.brand:hover{color:var(--t1);}
.brand-mark{width:34px;height:34px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:0 8px 18px rgba(108,76,241,.32);flex:0 0 auto;}
.brand-mark svg{width:18px;height:18px;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--t2);padding:6px 0;}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;padding:0;place-items:center;gap:4px;flex-direction:column;}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .2s ease;}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,filter .22s ease;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(108,76,241,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--t1);}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh1);}
.btn-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.42);color:#fff;}
.btn-light:hover{background:#fff;color:var(--c-primary);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- Drawer ---------- */
.drawer{position:fixed;top:72px;left:0;right:0;bottom:0;background:#fff;z-index:85;padding:8px 24px 32px;overflow-y:auto;transform:translateY(-10px);opacity:0;visibility:hidden;transition:transform .26s ease,opacity .26s ease,visibility .26s;}
.drawer.open{transform:none;opacity:1;visibility:visible;}
.drawer a.drawer-link{display:block;padding:18px 4px;font-size:19px;font-weight:600;color:var(--t1);border-bottom:1px solid var(--line);}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{color:var(--c-primary);}
.drawer .drawer-cta{margin-top:24px;}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:84px 0 72px;background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;color:#fff;}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(23,20,42,.90) 0%,rgba(108,76,241,.74) 52%,rgba(255,77,157,.58) 100%);}
.page-hero::after{content:"";position:absolute;width:520px;height:520px;right:-140px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(255,197,61,.30),rgba(255,197,61,0) 68%);}
.page-hero .container{position:relative;z-index:2;}
.hero-inner{max-width:840px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.9);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span{color:rgba(255,255,255,.9);}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);border-radius:var(--r-pill);padding:6px 16px;margin-bottom:22px;}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--c-mint);display:inline-block;}
.page-hero h1{color:#fff;text-shadow:0 8px 32px rgba(23,20,42,.35);}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.9);max-width:680px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:52px;max-width:820px;}
.hero-stat{position:relative;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);border-radius:var(--r-md);padding:16px 18px 16px 22px;backdrop-filter:blur(6px);}
.hero-stat::before{content:"";position:absolute;left:8px;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--grad-brand);}
.hero-stat b{display:block;font-size:28px;font-weight:800;color:var(--c-amber);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-stat small{display:block;font-size:13px;color:rgba(255,255,255,.86);line-height:1.6;margin-top:4px;}

/* ---------- Prep cards ---------- */
.prep-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.prep-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh1);transition:transform .25s ease,box-shadow .25s ease;}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.prep-icon{width:44px;height:44px;border-radius:14px;background:var(--bg-soft);display:grid;place-items:center;margin-bottom:18px;}
.prep-icon svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.prep-card h3{font-size:18px;margin-bottom:10px;}
.prep-card p{margin:0;font-size:15px;line-height:1.8;color:var(--t2);}

/* ---------- Flow cards (two column) ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
.flow-card{display:grid;grid-template-columns:216px 1fr;gap:0;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;}
.flow-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.flow-thumb{position:relative;overflow:hidden;min-height:100%;}
.flow-thumb img{width:100%;height:100%;min-height:190px;object-fit:cover;transition:transform .4s ease;}
.flow-card:hover .flow-thumb img{transform:scale(1.04);}
.flow-no{position:absolute;left:12px;top:12px;background:rgba(23,20,42,.72);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;border-radius:var(--r-pill);padding:4px 12px;backdrop-filter:blur(4px);}
.flow-body{padding:24px 26px;}
.flow-body h3{font-size:19px;margin-bottom:10px;}
.flow-body p{margin:0 0 14px;font-size:15px;line-height:1.82;color:var(--t2);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;color:#5B34C8;background:rgba(108,76,241,.10);border:1px solid rgba(108,76,241,.18);}
.tag.mint{color:#0E8E77;background:rgba(23,214,180,.12);border-color:rgba(23,214,180,.28);}
.tag.amber{color:#8A6200;background:rgba(255,197,61,.18);border-color:rgba(255,197,61,.38);}

/* ---------- CTA bar ---------- */
.cta-bar{margin-top:52px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;background:var(--grad-soft);border:1px solid rgba(108,76,241,.20);border-radius:var(--r-xl);padding:32px 36px;box-shadow:var(--sh1);}
.cta-bar h3{font-size:22px;margin-bottom:8px;}
.cta-bar p{margin:0;font-size:15px;color:var(--t2);line-height:1.8;max-width:640px;}
.cta-bar .cta-bar-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- Scene list ---------- */
.scene-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.scene-item{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 26px;box-shadow:var(--sh1);}
.scene-item h4{display:flex;align-items:center;gap:10px;font-size:17px;margin-bottom:10px;}
.scene-item h4 .dot{width:8px;height:8px;border-radius:50%;background:var(--c-mint);flex:0 0 auto;}
.scene-item p{margin:0;font-size:15px;line-height:1.82;color:var(--t2);}

/* ---------- FAQ ---------- */
.faq-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;background:none;border:0;cursor:pointer;padding:22px 28px;font-size:17px;font-weight:600;color:var(--t1);transition:background .2s ease;}
.faq-q:hover{background:rgba(108,76,241,.05);}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.faq-icon::before{left:2px;right:2px;top:10px;height:2px;}
.faq-icon::after{top:2px;bottom:2px;left:10px;width:2px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{margin:0;padding:0 28px 24px;font-size:15px;line-height:1.85;color:var(--t2);}

/* ---------- Final CTA ---------- */
.final-cta{position:relative;overflow:hidden;background:var(--grad-brand);border-radius:var(--r-xl);padding:56px 48px;color:#fff;box-shadow:var(--sh3);text-align:center;}
.final-cta::after{content:"";position:absolute;width:420px;height:420px;right:-120px;bottom:-200px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.28),rgba(255,255,255,0) 70%);}
.final-cta h2{color:#fff;position:relative;z-index:2;}
.final-cta p{position:relative;z-index:2;color:rgba(255,255,255,.92);max-width:660px;margin:16px auto 28px;}
.final-cta .btn{position:relative;z-index:2;}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--t1);margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:11px;}
.footer-brand .brand-mark svg{width:17px;height:17px;}
.footer-brand span span{color:var(--c-primary);}
.site-footer p{font-size:14.5px;line-height:1.85;color:var(--t2);margin:0;}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--t1);}
.site-footer ul li{font-size:14.5px;color:var(--t2);line-height:1.9;margin-bottom:10px;}
.site-footer ul li a{color:var(--t2);}
.site-footer ul li a:hover{color:var(--c-primary);}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--t3);}
.footer-bottom a{color:var(--t3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ---------- Floating CTA & back to top ---------- */
.float-cta{position:fixed;right:24px;bottom:32px;z-index:70;display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 26px;border-radius:var(--r-pill);background:var(--grad-brand);color:#fff;font-size:15px;font-weight:600;box-shadow:var(--sh3);transition:transform .22s ease,filter .22s ease;}
.float-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.back-top{position:fixed;right:24px;bottom:98px;z-index:70;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh1);display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .2s ease;}
.back-top.show{opacity:1;visibility:visible;}
.back-top:hover{transform:translateY(-2px);box-shadow:var(--sh2);}
.back-top svg{width:18px;height:18px;stroke:var(--c-primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .container{padding:0 22px;}
  .flow-card{grid-template-columns:190px 1fr;}
}
@media (max-width:992px){
  .nav-links{display:none;}
  .burger{display:flex;align-items:center;}
  .prep-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
  .page-hero{padding:72px 0 60px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .scene-list{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr;gap:12px;}
  .hero-stat b{font-size:24px;}
  .cta-bar{padding:26px 22px;border-radius:var(--r-lg);}
  .final-cta{padding:40px 24px;border-radius:var(--r-lg);}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a p{padding:0 20px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .nav-right .btn{display:none;}
  .float-cta{left:0;right:0;bottom:0;height:auto;justify-content:center;padding:14px 20px calc(14px + env(safe-area-inset-bottom));border-radius:0;}
  .back-top{display:none;}
  .site-footer{padding-bottom:96px;}
}
@media (max-width:520px){
  .prep-grid{grid-template-columns:1fr;}
  .flow-card{grid-template-columns:1fr;}
  .flow-thumb img{min-height:180px;height:180px;}
  .hero-actions .btn{width:100%;}
  .cta-bar .cta-bar-actions{width:100%;}
  .cta-bar .cta-bar-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --c-primary:#6C4CF1;
  --c-mid:#A63BFF;
  --c-accent:#FF4D9D;
  --grad-brand:linear-gradient(120deg,#6C4CF1,#A63BFF 45%,#FF4D9D);
  --c-mint:#17D6B4;
  --c-amber:#FFC53D;
  --c-amber-deep:#8A5A00;
  --c-danger:#F2555A;
  --c-ink:#17142A;
  --bg-page:#F7F6FC;
  --bg-soft:#EFECFB;
  --bg-card:#FFFFFF;
  --t1:#17142A;
  --t2:#4B4763;
  --t3:#8A85A3;
  --line:#E6E2F5;
  --sh1:0 2px 8px rgba(23,20,42,.05);
  --sh2:0 12px 32px rgba(76,52,180,.10);
  --sh3:0 24px 64px rgba(76,52,180,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--t2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;line-height:1.25;}
p{margin:0 0 20px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
section{scroll-margin-top:88px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  height:72px;
  background:rgba(247,246,252,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh1);
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{font-size:18px;font-weight:800;color:var(--t1);letter-spacing:.2px;white-space:nowrap;}
.brand-text span{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--t2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:14px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--r-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--t1);border-color:var(--line);}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(108,76,241,.4);transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;}

.burger{
  display:none;width:42px;height:42px;border-radius:12px;
  background:#fff;border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .25s ease;}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.open span:nth-child(2){opacity:0;}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 页面标题区 ============ */
.page-head{
  position:relative;overflow:hidden;
  background:
    radial-gradient(760px 320px at 8% -10%,rgba(166,59,255,.16),transparent 62%),
    radial-gradient(680px 300px at 96% 0%,rgba(255,77,157,.13),transparent 60%),
    var(--bg-soft);
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
}
.breadcrumb{font-size:13px;color:var(--t3);display:flex;align-items:center;gap:8px;margin-bottom:22px;}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span{color:var(--t3);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  color:var(--c-primary);background:#fff;border:1px solid var(--line);
  padding:7px 16px;border-radius:var(--r-pill);margin:0 0 18px;
  box-shadow:var(--sh1);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--c-mint);}
.page-head h1{font-size:clamp(30px,4.2vw,46px);font-weight:800;line-height:1.18;max-width:860px;margin-bottom:18px;}
.lead{font-size:17px;line-height:1.9;color:var(--t2);max-width:760px;margin-bottom:30px;}

.stat-strip{display:flex;gap:16px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;}
.stat-strip::-webkit-scrollbar{display:none;}
.stat-badge{
  position:relative;flex:0 0 auto;min-width:158px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 22px 14px 28px;box-shadow:var(--sh1);overflow:hidden;
}
.stat-badge::before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;background:var(--grad-brand);}
.stat-badge strong{
  display:block;font-size:28px;font-weight:800;line-height:1.2;color:var(--c-amber-deep);
  font-variant-numeric:tabular-nums;
}
.stat-badge span{display:block;font-size:13px;color:var(--t3);margin-top:2px;}

/* ============ 主体两列 ============ */
.main-wrap{padding:64px 0 88px;}
.layout{display:grid;grid-template-columns:288px 1fr;gap:56px;align-items:start;}

.side-nav{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.panel{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh1);
}
.panel-title{
  font-size:13px;font-weight:700;letter-spacing:.6px;color:var(--t3);
  text-transform:uppercase;margin:0 0 16px;
}
.toc-list li+li{border-top:1px solid var(--line);}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:12px 0;font-size:15px;color:var(--t2);font-weight:500;
}
.toc-list a .idx{
  flex:0 0 auto;width:22px;height:22px;border-radius:8px;
  background:var(--bg-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.toc-list a:hover{color:var(--c-primary);}
.toc-list a:hover .idx{background:var(--grad-brand);color:#fff;}

.check-list li{
  position:relative;padding:0 0 0 22px;margin-bottom:12px;
  font-size:15px;line-height:1.8;color:var(--t2);
}
.check-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--c-mint);
}
.check-list li:last-child{margin-bottom:0;}

.side-cta{
  background:var(--grad-brand);border-radius:var(--r-lg);padding:26px 24px;color:#fff;
  box-shadow:var(--sh2);
}
.side-cta h4{color:#fff;font-size:17px;margin-bottom:8px;}
.side-cta p{color:rgba(255,255,255,.88);font-size:14px;line-height:1.8;margin-bottom:16px;}
.side-cta .btn{background:#fff;color:var(--c-primary);width:100%;}
.side-cta .btn:hover{color:var(--c-primary);}

/* ============ 内容流 ============ */
.flow-head{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 30px;box-shadow:var(--sh1);margin-bottom:8px;
}
.flow-head h2{font-size:22px;margin-bottom:8px;}
.flow-head p{margin:0;font-size:15px;color:var(--t2);}

.sec{padding:34px 0 6px;border-top:1px solid var(--line);}
.sec:first-of-type{border-top:none;}
.sec-header{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px;}
.sec-bar{flex:0 0 auto;width:4px;height:26px;border-radius:4px;background:var(--grad-brand);margin-top:3px;}
.sec h2{font-size:23px;line-height:1.35;}
.sec h3{font-size:18px;margin:26px 0 12px;}
.sec p{font-size:16px;line-height:1.95;color:var(--t2);}
.sec ul.bullets{margin:0 0 20px;}
.sec ul.bullets li{
  position:relative;padding:0 0 0 20px;margin-bottom:10px;
  font-size:16px;line-height:1.9;color:var(--t2);
}
.sec ul.bullets li::before{
  content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--grad-brand);
}

.mini-stats{display:flex;flex-wrap:wrap;gap:12px;margin:6px 0 22px;}
.mini-stat{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 18px 8px 22px;font-size:14px;color:var(--t2);box-shadow:var(--sh1);
}
.mini-stat::before{content:"";position:absolute;left:8px;top:50%;transform:translateY(-50%);width:6px;height:16px;border-radius:4px;background:var(--grad-brand);}
.mini-stat b{color:var(--c-amber-deep);font-variant-numeric:tabular-nums;}

.note{
  background:var(--bg-soft);border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);padding:18px 22px;margin:0 0 22px;
  font-size:15px;line-height:1.9;color:var(--t2);
}
.note strong{color:var(--t1);}

.figure{margin:6px 0 26px;}
.figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-md);border:1px solid var(--line);
  transition:transform .35s ease,box-shadow .3s ease;
}
.figure:hover img{transform:scale(1.02);box-shadow:var(--sh2);}
.figure figcaption{font-size:13px;color:var(--t3);margin-top:10px;text-align:center;}

/* ============ FAQ ============ */
.faq-block{margin-top:44px;}
.faq-block h2{font-size:24px;margin-bottom:18px;}
.faq-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 26px;box-shadow:var(--sh1);
}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:none;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--t1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  background:var(--bg-soft);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;line-height:1;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);background:var(--grad-brand);color:#fff;}
.faq-item .answer{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--t2);max-width:720px;}

/* ============ CTA 大卡 ============ */
.cta-section{padding:0 0 88px;}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:linear-gradient(120deg,rgba(108,76,241,.10),rgba(166,59,255,.10) 45%,rgba(255,77,157,.10)),#fff;
  border:1px solid var(--line);
  box-shadow:var(--sh2);
  padding:56px 48px;
  display:grid;grid-template-columns:1.4fr .9fr;gap:36px;align-items:center;
}
.cta-card h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-card p{font-size:16px;line-height:1.9;color:var(--t2);margin-bottom:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-glow{
  position:absolute;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,59,255,.30),transparent 68%);
  right:-90px;bottom:-140px;pointer-events:none;filter:blur(6px);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.85;color:var(--t2);max-width:340px;}
.site-footer h4{font-size:15px;margin-bottom:16px;color:var(--t1);}
.site-footer ul li{margin-bottom:11px;font-size:14px;color:var(--t2);line-height:1.7;}
.site-footer ul li a{color:var(--t2);}
.site-footer ul li a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3);}
.footer-bottom a:hover{color:var(--c-primary);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:32px;z-index:150;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:var(--r-pill);
  background:var(--grad-brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh3);
  transition:transform .2s ease,filter .2s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);}
.float-cta:active{transform:translateY(0);}
.float-cta .pulse{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 0 0 rgba(255,255,255,.7);animation:pulse 2.2s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(255,255,255,.65);}
  70%{box-shadow:0 0 0 10px rgba(255,255,255,0);}
  100%{box-shadow:0 0 0 0 rgba(255,255,255,0);}
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .layout{grid-template-columns:262px 1fr;gap:40px;}
}
@media (max-width:992px){
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:16px 24px 40px;
    transform:translateX(102%);transition:transform .3s ease;
    overflow-y:auto;border-top:1px solid var(--line);
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{padding:18px 0;border-bottom:1px solid var(--line);font-size:17px;}
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--c-primary);}
  .burger{display:flex;}
  .layout{grid-template-columns:1fr;gap:32px;}
  .side-nav{position:static;}
  .cta-card{grid-template-columns:1fr;padding:44px 32px;text-align:left;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .main-wrap{padding:48px 0 72px;}
}
@media (max-width:768px){
  body{padding-bottom:74px;}
  .page-head{padding:40px 0 36px;}
  .lead{font-size:16px;}
  .main-wrap{padding:36px 0 60px;}
  .panel{padding:22px 20px;}
  .faq-card{padding:6px 20px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .cta-section{padding-bottom:60px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:48px 0 24px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    justify-content:center;padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    box-shadow:0 -8px 28px rgba(76,52,180,.18);
  }
  .float-cta:hover{transform:none;}
  .nav-right .btn-sm{display:none;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .brand-text{font-size:16px;}
  .stat-badge{min-width:140px;padding:14px 18px 12px 24px;}
  .stat-badge strong{font-size:24px;}
  .sec h2{font-size:20px;}
  .flow-head{padding:22px 20px;}
  .cta-card{padding:34px 22px;}
  .mini-stat{font-size:13px;padding:7px 16px 7px 20px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#6C4CF1;
  --c-mid:#A63BFF;
  --c-accent:#FF4D9D;
  --c-mint:#17D6B4;
  --c-amber:#FFC53D;
  --c-danger:#F2555A;
  --grad-brand:linear-gradient(120deg,#6C4CF1,#A63BFF 45%,#FF4D9D);
  --bg-page:#F7F6FC;
  --bg-soft:#EFECFB;
  --bg-card:#FFFFFF;
  --ink-deep:#17142A;
  --t1:#17142A;
  --t2:#4B4763;
  --t3:#736E8C;
  --line:#E6E2F5;
  --sh1:0 2px 8px rgba(23,20,42,.05);
  --sh2:0 12px 32px rgba(76,52,180,.10);
  --sh3:0 24px 64px rgba(76,52,180,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --container:1200px;
}

*,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--t2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;line-height:1.25;}
p{margin:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:8px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.narrow{max-width:1080px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(247,246,252,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{height:72px;display:flex;align-items:center;gap:36px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
  flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:17px;font-weight:800;color:var(--t1);letter-spacing:.4px;white-space:nowrap;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:32px;margin:0 auto;}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--t2);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-pill);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(108,76,241,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(108,76,241,.3);}
.btn-ghost{background:#fff;color:var(--t1);border:1px solid var(--line);}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--sh2);color:var(--c-primary);border-color:rgba(108,76,241,.4);}
.btn-ghost:active{transform:translateY(1px);}
.btn .arw{transition:transform .2s ease;font-size:15px;line-height:1;}
.btn:hover .arw{transform:translateX(3px);}
.btn[aria-disabled="true"],.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.burger{
  display:none;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .2s ease;}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.open span:nth-child(2){opacity:0;}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 通用区块 ---------- */
main{padding-top:72px;}
.section{padding:96px 0;}
.section.soft{background:var(--bg-soft);}
.section-line{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:rgba(108,76,241,.08);
  border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--c-mint);}
.section-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.2;}
.section-head p{margin-top:16px;font-size:16px;line-height:1.9;color:var(--t2);}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1.4;
  color:#5B3BD6;background:rgba(108,76,241,.1);
  border-radius:var(--r-pill);padding:4px 12px;
}
.chip-mint{color:#0C8471;background:rgba(23,214,180,.16);}
.chip-amber{color:#7E5900;background:rgba(255,197,61,.26);}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li::after{content:'/';color:#C7C1DE;}
.crumb li:last-child::after{content:'';}
.crumb a:hover{color:var(--c-primary);}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:36px 0 80px;overflow:hidden;}
.hero-blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.42;pointer-events:none;}
.blob-a{width:340px;height:340px;background:#A63BFF;top:-120px;left:-80px;}
.blob-b{width:300px;height:300px;background:#FF4D9D;bottom:-140px;right:-60px;}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(32px,4.4vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.5px;}
.hero h1 em{
  font-style:normal;
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--t2);max-width:600px;}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-media{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--sh3);aspect-ratio:16/11;background:var(--bg-soft);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(108,76,241,.42),rgba(255,77,157,.22));
}
.hero-media-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);
  border-radius:var(--r-pill);padding:8px 16px;
  font-size:13px;font-weight:600;color:var(--t1);
}
.hero-media-tag i{width:8px;height:8px;border-radius:50%;background:var(--c-mint);display:block;}

.stats{margin-top:38px;display:flex;gap:16px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;}
.stats::-webkit-scrollbar{display:none;}
.stat{
  position:relative;flex:0 0 auto;min-width:172px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 20px 16px 26px;box-shadow:var(--sh1);
}
.stat::before{
  content:'';position:absolute;left:11px;top:17px;bottom:17px;width:4px;border-radius:4px;
  background:var(--grad-brand);
}
.stat b{display:block;font-size:29px;font-weight:800;line-height:1.1;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.stat span{display:block;margin-top:6px;font-size:13px;line-height:1.6;color:var(--t3);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding:8px 0;}
.timeline::before{
  content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;
  background:linear-gradient(180deg,rgba(108,76,241,0),rgba(108,76,241,.55) 8%,rgba(255,77,157,.55) 92%,rgba(255,77,157,0));
}
.tl-item{position:relative;width:calc(50% - 60px);margin-bottom:44px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item.left{margin-right:auto;}
.tl-item.right{margin-left:auto;}
.tl-dot{
  position:absolute;top:34px;z-index:3;
  width:44px;height:44px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);
  color:var(--c-primary);font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
  display:grid;place-items:center;
  box-shadow:0 6px 18px rgba(76,52,180,.16);
}
.tl-item.left .tl-dot{right:-82px;}
.tl-item.right .tl-dot{left:-82px;}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(108,76,241,.28);}
.tl-card h3{font-size:20px;line-height:1.4;margin:12px 0 12px;}
.tl-card p{font-size:15px;line-height:1.85;color:var(--t2);}
.tl-media{margin-top:18px;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10;background:var(--bg-soft);}
.tl-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.tl-card:hover .tl-media img{transform:scale(1.04);}
.tl-list{margin-top:16px;display:grid;gap:10px;}
.tl-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--t2);}
.tl-list li::before{content:'';position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:var(--c-mint);}
.tl-tip{
  margin-top:16px;padding:14px 16px;border-radius:var(--r-md);
  background:rgba(255,197,61,.16);border-left:3px solid var(--c-amber);
  font-size:14px;line-height:1.8;color:#5A4A20;
}

/* ---------- 设备适配 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.device-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.device-icon{
  width:44px;height:44px;border-radius:14px;
  background:var(--bg-soft);color:var(--c-primary);
  display:grid;place-items:center;margin-bottom:18px;
}
.device-icon svg{width:22px;height:22px;}
.device-card h3{font-size:18px;margin-bottom:8px;}
.device-card > p{font-size:15px;line-height:1.85;color:var(--t2);}
.device-list{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);display:grid;gap:10px;}
.device-list li{position:relative;padding-left:22px;font-size:14px;line-height:1.75;color:var(--t2);}
.device-list li::before{
  content:'';position:absolute;left:2px;top:9px;width:11px;height:6px;
  border-left:2px solid var(--c-mint);border-bottom:2px solid var(--c-mint);
  transform:rotate(-45deg);border-radius:1px;
}

/* ---------- 异常处理 ---------- */
.fix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.fix-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.fix-grid .fix-card:nth-child(even){margin-top:36px;}
.fix-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);}
.fix-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.fix-num{
  width:32px;height:32px;border-radius:10px;flex-shrink:0;
  background:rgba(242,85,90,.12);color:#C4383C;
  display:grid;place-items:center;font-size:13px;font-weight:800;
}
.fix-card h3{font-size:18px;}
.fix-card p{font-size:15px;line-height:1.85;color:var(--t2);}
.fix-actions{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- FAQ ---------- */
.faq-wrap{
  max-width:880px;margin:0 auto;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 32px;box-shadow:var(--sh1);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--t1);line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  position:relative;flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;
  transition:transform .2s ease,background .25s ease,border-color .25s ease;
}
.faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--t2);border-radius:2px;transition:background .2s ease,opacity .2s ease;}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.faq-item.open .faq-icon{transform:rotate(180deg);background:var(--grad-brand);border-color:transparent;}
.faq-item.open .faq-icon::before{background:#fff;}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--t2);max-width:720px;}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px;}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  padding:64px 48px;
  background:linear-gradient(120deg,rgba(108,76,241,.14),rgba(166,59,255,.1) 45%,rgba(255,77,157,.12));
  border:1px solid var(--line);
  text-align:center;
}
.cta-card::before{
  content:'';position:absolute;width:280px;height:280px;border-radius:50%;
  background:rgba(166,59,255,.22);filter:blur(80px);top:-120px;right:-60px;
}
.cta-card h2{position:relative;font-size:clamp(24px,3vw,36px);}
.cta-card p{position:relative;margin:18px auto 0;max-width:640px;font-size:16px;line-height:1.9;color:var(--t2);}
.cta-actions{position:relative;margin-top:32px;display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}
.cta-note{position:relative;margin-top:20px;font-size:13px;color:var(--t3);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:#C9C4DE;padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-text span{color:#C6B6FF;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:600;}
.site-footer ul{display:grid;gap:12px;}
.site-footer ul li{font-size:14px;line-height:1.7;}
.site-footer a{color:#C9C4DE;}
.site-footer a:hover{color:#fff;}
.site-footer p{font-size:14px;line-height:1.85;color:#A9A3C4;max-width:340px;}
.footer-bottom{
  padding:24px 0;display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:12px;font-size:13px;color:#8A85A3;
}
.footer-bottom a{color:#C9C4DE;text-decoration:underline;text-underline-offset:3px;}

/* ---------- 浮动 CTA / 回到顶部 ---------- */
.float-cta{position:fixed;right:24px;bottom:32px;z-index:95;}
.to-top{
  position:fixed;right:24px;bottom:100px;z-index:95;
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--t1);
  display:grid;place-items:center;
  box-shadow:var(--sh1);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,box-shadow .2s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:var(--sh2);color:var(--c-primary);}
.to-top svg{width:20px;height:20px;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 20px;}
  .hero-grid{gap:40px;}
}
@media (max-width:992px){
  .nav{gap:20px;}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    height:calc(100vh - 72px);
    margin:0;padding:12px 24px 36px;
    background:#fff;
    flex-direction:column;align-items:stretch;gap:0;
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
  }
  .nav-links.open{transform:translateX(0);opacity:1;visibility:visible;}
  .nav-links a{width:100%;padding:18px 2px;font-size:17px;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--c-primary);}
  .burger{display:flex;}
  .section{padding:72px 0;}
  .hero{padding:28px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-media{aspect-ratio:16/10;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{padding-bottom:78px;}
  .section{padding:56px 0;}
  .hero{padding:20px 0 56px;}
  .hero h1{font-size:clamp(28px,7vw,36px);}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;}
  .grid-3{grid-template-columns:1fr;}
  .fix-grid{grid-template-columns:1fr;gap:20px;}
  .fix-grid .fix-card:nth-child(even){margin-top:0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:clamp(24px,6vw,30px);}

  .timeline::before{left:20px;margin-left:0;}
  .tl-item,.tl-item.left,.tl-item.right{width:100%;margin:0 0 24px;padding-left:60px;}
  .tl-item:last-child{margin-bottom:0;}
  .tl-item.left .tl-dot,.tl-item.right .tl-dot{left:0;right:auto;width:40px;height:40px;top:22px;font-size:13px;}
  .tl-card{padding:22px;}
  .tl-card h3{font-size:18px;}

  .faq-wrap{padding:4px 20px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .cta-card{padding:44px 22px;}
  .cta-actions .btn{width:100%;}

  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}

  .float-cta{
    right:0;left:0;bottom:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,246,252,.94);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
  }
  .float-cta .btn{width:100%;}
  .to-top{right:16px;bottom:96px;width:42px;height:42px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .stat{min-width:150px;padding:14px 16px 14px 24px;}
  .stat b{font-size:25px;}
  .btn{height:46px;padding:0 20px;font-size:15px;}
  .btn-sm{height:38px;padding:0 16px;font-size:13px;}
  .crumb ol{font-size:12px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#6C4CF1;
  --c-mid:#A63BFF;
  --c-accent:#FF4D9D;
  --c-mint:#17D6B4;
  --c-amber:#FFC53D;
  --c-danger:#F2555A;
  --c-ink:#17142A;
  --bg-page:#F7F6FC;
  --bg-soft:#EFECFB;
  --bg-card:#FFFFFF;
  --t1:#17142A;
  --t2:#4B4763;
  --t3:#8A85A3;
  --line:#E6E2F5;
  --sh1:0 2px 8px rgba(23,20,42,.05);
  --sh2:0 12px 32px rgba(76,52,180,.10);
  --sh3:0 24px 64px rgba(76,52,180,.16);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --grad-brand:linear-gradient(120deg,#6C4CF1,#A63BFF 45%,#FF4D9D);
  --container:1200px;
  --nav-h:72px;
}
*,*::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",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--t2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.25;font-weight:700;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:3px solid rgba(108,76,241,.35);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;scroll-margin-top:88px;}
.section-soft{background:var(--bg-soft);}
.section-line{border-top:1px solid var(--line);}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:var(--nav-h);
  background:rgba(247,246,252,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh2);background:rgba(247,246,252,.95);}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:24px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(108,76,241,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.2px;white-space:nowrap;}
.brand-text span{color:var(--c-primary);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--t2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.nav-links a:hover{color:var(--t1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--t1);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .2s ease;}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.burger.is-open span:nth-child(2){opacity:0;}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:15px 28px;border-radius:var(--r-pill);
  border:1px solid transparent;transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(108,76,241,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh3);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--t1);border-color:var(--line);}
.btn-ghost:hover{color:var(--c-primary);border-color:rgba(108,76,241,.45);transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn svg{width:16px;height:16px;}

/* ===== Hero ===== */
.hero{
  position:relative;padding:calc(var(--nav-h) + 72px) 0 88px;overflow:hidden;
  background:linear-gradient(180deg,#F7F6FC 0%,#EFECFB 100%);
}
.hero-bg{
  position:absolute;top:-140px;right:-160px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,rgba(166,59,255,.26),rgba(255,77,157,.14) 45%,rgba(108,76,241,0) 72%);
  pointer-events:none;
}
.hero-bg.two{
  top:auto;bottom:-220px;left:-200px;right:auto;width:520px;height:520px;
  background:radial-gradient(circle at 50% 50%,rgba(23,214,180,.20),rgba(108,76,241,0) 70%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 16px;box-shadow:var(--sh1);
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-mint);display:inline-block;}
.hero h1{
  font-size:clamp(32px,5vw,52px);line-height:1.15;font-weight:800;margin:22px 0 20px;letter-spacing:-.5px;
}
.hero h1 em{
  font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;line-height:1.9;color:var(--t2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 40px;}
.hero-stats{display:flex;gap:14px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;}
.hero-stats::-webkit-scrollbar{display:none;}
.stat-badge{
  flex:0 0 auto;display:flex;flex-direction:column;gap:2px;min-width:150px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:16px 18px 16px 24px;
  position:relative;box-shadow:var(--sh1);
}
.stat-badge::before{
  content:"";position:absolute;left:12px;top:16px;bottom:16px;width:5px;border-radius:4px;background:var(--grad-brand);
}
.stat-badge b{font-size:28px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-badge b em{font-style:normal;font-size:15px;margin-left:2px;}
.stat-badge span{font-size:13px;color:var(--t3);line-height:1.6;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;border-radius:var(--r-xl);box-shadow:var(--sh3);object-fit:cover;aspect-ratio:4/3;
}
.hero-visual::after{
  content:"";position:absolute;inset:auto -18px -18px auto;width:150px;height:150px;border-radius:var(--r-lg);
  background:var(--grad-brand);opacity:.16;z-index:-1;
}
.hero-tip{
  position:absolute;left:-24px;bottom:28px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh2);max-width:230px;
}
.hero-tip strong{display:block;font-size:14px;color:var(--t1);font-weight:600;margin-bottom:2px;}
.hero-tip span{font-size:12.5px;color:var(--t3);line-height:1.6;}

/* ===== 面包屑 ===== */
.crumb{padding:calc(var(--nav-h) + 24px) 0 0;background:linear-gradient(180deg,#F7F6FC,#F7F6FC);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--line);}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .current{color:var(--t2);font-weight:500;}

/* ===== 区块标题 ===== */
.section-head{max-width:720px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);background:rgba(108,76,241,.10);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(26px,3.4vw,38px);line-height:1.2;font-weight:700;margin-bottom:14px;}
.section-head p{font-size:16px;line-height:1.85;color:var(--t2);}

/* ===== 现象分流卡 ===== */
.split-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.split-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;
  box-shadow:var(--sh1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.split-card:hover{transform:translateY(-4px);box-shadow:var(--sh2);border-color:rgba(108,76,241,.3);}
.split-icon{
  width:44px;height:44px;border-radius:13px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.split-icon svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.split-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.split-card p{font-size:14.5px;line-height:1.8;color:var(--t2);}
.split-card .tag-line{display:inline-block;margin-top:14px;font-size:12.5px;color:var(--c-primary);background:rgba(108,76,241,.08);border-radius:var(--r-pill);padding:4px 12px;}

/* ===== 图文交错 ===== */
.z-row{
  display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);
}
.z-row:first-of-type{border-top:0;padding-top:0;}
.z-row.reverse .z-media{order:2;}
.z-media{position:relative;overflow:hidden;border-radius:var(--r-lg);box-shadow:var(--sh2);}
.z-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s ease;}
.z-row:hover .z-media img{transform:scale(1.04);}
.z-media .media-chip{
  position:absolute;left:16px;top:16px;background:rgba(23,20,42,.72);color:#fff;font-size:12.5px;font-weight:500;
  border-radius:var(--r-pill);padding:6px 14px;backdrop-filter:blur(6px);
}
.z-body h3{font-size:clamp(20px,2.2vw,24px);font-weight:600;margin-bottom:14px;line-height:1.35;}
.z-body>p{font-size:16px;line-height:1.9;color:var(--t2);margin-bottom:20px;}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;line-height:1.85;color:var(--t2);margin-bottom:10px;
}
.check-list li::before{
  content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--c-mint);
}
.mini-note{
  margin-top:20px;background:var(--bg-soft);border-left:3px solid var(--c-primary);border-radius:var(--r-md);
  padding:14px 18px;font-size:14px;line-height:1.8;color:var(--t2);
}

/* ===== 数据说明 ===== */
.proof-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center;}
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.proof-cell{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh1);
}
.proof-cell b{
  display:block;font-size:clamp(34px,4vw,44px);font-weight:800;line-height:1.1;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.proof-cell b em{font-style:normal;font-size:16px;margin-left:4px;}
.proof-cell span{display:block;margin-top:8px;font-size:14px;line-height:1.7;color:var(--t3);}
.proof-flag{
  display:inline-flex;align-items:center;gap:8px;background:var(--c-amber);color:#5A4100;font-size:12.5px;font-weight:600;
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}

/* ===== 自查 + 反馈 ===== */
.check-wrap{display:grid;grid-template-columns:1fr 460px;gap:48px;align-items:start;}
.path-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;margin-bottom:16px;
  box-shadow:var(--sh1);transition:transform .25s ease,box-shadow .25s ease;
}
.path-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);}
.path-head{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.path-num{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:var(--grad-brand);color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.path-head h3{font-size:17px;font-weight:600;}
.path-card p{font-size:15px;line-height:1.85;color:var(--t2);}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px;box-shadow:var(--sh2);
}
.form-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.form-card>p{font-size:14.5px;line-height:1.8;color:var(--t2);margin-bottom:22px;}
.field{display:block;margin-bottom:16px;}
.field span{display:block;font-size:13.5px;font-weight:600;color:var(--t1);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-sm);background:#FCFBFE;
  padding:0 16px;color:var(--t1);transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:104px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(108,76,241,.16);background:#fff;
}
.field input::placeholder,.field textarea::placeholder{color:#B4B0C6;}
.form-ok{
  margin-top:14px;background:rgba(23,214,180,.12);border:1px solid rgba(23,214,180,.45);color:#0B7F6A;
  border-radius:var(--r-sm);padding:12px 16px;font-size:14px;
}
.form-hint{margin-top:14px;font-size:12.5px;color:var(--t3);line-height:1.7;}

/* ===== FAQ ===== */
.faq-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:10px 28px;box-shadow:var(--sh1);
}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:0;}
.faq-q{
  width:100%;background:none;border:0;padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:24px;
  text-align:left;font-size:17px;font-weight:600;color:var(--t1);line-height:1.5;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;background:var(--bg-soft);position:relative;
  transition:transform .25s ease,background .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;left:50%;top:50%;
}
.faq-icon::before{width:12px;height:2px;transform:translate(-50%,-50%);}
.faq-icon::after{width:2px;height:12px;transform:translate(-50%,-50%);transition:opacity .2s ease;}
.faq-item.open .faq-icon{transform:rotate(180deg);background:rgba(108,76,241,.14);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--t2);padding:0 44px 24px 0;}

/* ===== 最终 CTA ===== */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:64px 56px;
  background:linear-gradient(120deg,rgba(108,76,241,.12),rgba(166,59,255,.10) 45%,rgba(255,77,157,.12));
  border:1px solid rgba(108,76,241,.22);box-shadow:var(--sh2);
  display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
}
.cta-card h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:14px;}
.cta-card p{font-size:16px;line-height:1.85;color:var(--t2);max-width:520px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;right:24px;bottom:32px;z-index:140;
  display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:var(--r-pill);
  background:var(--grad-brand);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh3);transition:transform .25s ease,filter .25s ease;
}
.float-cta:hover{color:#fff;transform:translateY(-3px);filter:brightness(1.07);}
.float-cta i{width:8px;height:8px;border-radius:50%;background:var(--c-mint);display:inline-block;}

/* ===== 页脚 ===== */
.site-footer{background:#17142A;color:#C9C5DB;padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-text{color:#fff;font-size:16px;}
.footer-brand .brand-text span{color:#B79BFF;}
.site-footer p{font-size:14px;line-height:1.85;color:#9E99B5;max-width:320px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.site-footer ul li{font-size:14px;line-height:2.1;color:#9E99B5;}
.site-footer ul li a{color:#C9C5DB;position:relative;}
.site-footer ul li a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8A85A3;
}
.footer-bottom a{color:#B79BFF;}
.footer-bottom a:hover{color:#fff;}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .hero-inner{gap:44px;}
  .split-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:992px){
  .section{padding:72px 0;}
  .nav-links{
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 32px;
    transform:translateY(-10px);opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    overflow-y:auto;border-top:1px solid var(--line);
  }
  .nav-links.open{opacity:1;visibility:visible;transform:none;pointer-events:auto;}
  .nav-links a{font-size:18px;font-weight:500;padding:18px 0;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--c-primary);}
  .burger{display:flex;}
  .nav-right .btn{display:none;}
  .hero{padding:calc(var(--nav-h) + 48px) 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;}
  .hero-tip{left:16px;bottom:-16px;}
  .z-row{grid-template-columns:1fr;gap:28px;padding:40px 0;}
  .z-row.reverse .z-media{order:0;}
  .proof-wrap{grid-template-columns:1fr;gap:32px;}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-card{grid-template-columns:1fr;padding:48px 36px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;align-items:center;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero-lead{font-size:16px;}
  .split-grid{grid-template-columns:1fr;}
  .proof-grid{grid-template-columns:1fr;}
  .faq-card{padding:6px 20px;}
  .faq-q{font-size:16px;padding:20px 0;}
  .faq-a p{padding-right:0;}
  .cta-card{padding:36px 24px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;justify-content:center;
    padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    box-shadow:0 -8px 28px rgba(76,52,180,.22);
  }
  .float-cta:hover{transform:none;}
  .site-footer{padding-bottom:96px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:480px){
  .brand-text{font-size:15px;}
  .hero h1{font-size:30px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
}