/* roulang page: index */
:root{
  --brand-700:#4A1FB0;
  --brand-600:#5C2BD6;
  --brand-400:#8B62F0;
  --brand-100:#EDE6FE;
  --accent-500:#FF7A45;
  --accent-100:#FFE7DC;
  --ink-900:#1B1030;
  --ink-700:#3A2A5C;
  --ink-500:#6B5E86;
  --ink-300:#A99FC0;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:#EDE8F5;
  --ok:#12B39C;
  --warn:#E8A33D;
  --danger:#D94A4A;
  --grad:linear-gradient(120deg,#5C2BD6 0%,#8B62F0 45%,#FF7A45 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --e1:0 2px 8px rgba(27,16,48,.06);
  --e2:0 10px 24px rgba(27,16,48,.09);
  --e3:0 18px 40px rgba(92,43,214,.18);
  --sidebar-w:248px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg);
  color:var(--ink-700);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent-500);}
button{font-family:inherit;}
h1,h2,h3{color:var(--ink-900);margin:0;letter-spacing:0;line-height:1.35;}
h1{font-size:clamp(28px,4vw,44px);font-weight:800;}
h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;}
h3{font-size:19px;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink-900);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  overflow-y:auto;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{display:none;}
.sidebar::after{
  content:"";position:absolute;top:-60px;right:-70px;width:190px;height:190px;
  background:var(--grad);opacity:.32;filter:blur(38px);border-radius:50%;pointer-events:none;
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 22px;position:relative;z-index:1;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:16px;flex:0 0 40px;box-shadow:var(--e3);
}
.brand-text b{display:block;color:#fff;font-size:16px;font-weight:700;line-height:1.3;}
.brand-text span{display:block;color:var(--ink-300);font-size:11.5px;letter-spacing:.4px;}
.nav-group-label{
  color:rgba(255,255,255,.42);font-size:12px;font-weight:600;
  padding:16px 12px 8px;letter-spacing:.6px;
}
.nav{display:flex;flex-direction:column;gap:6px;position:relative;z-index:1;}
.nav-item{
  display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:var(--r-md);color:rgba(255,255,255,.78);font-size:14.5px;font-weight:500;
  position:relative;transition:background .2s ease,color .2s ease;
}
.nav-item i{width:20px;text-align:center;font-style:normal;font-size:15px;opacity:.85;}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;}
.nav-item.active{background:var(--grad);color:#fff;font-weight:600;box-shadow:var(--e3);}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:3px;background:var(--accent-500);
}
.sidebar-foot{margin-top:auto;padding-top:24px;position:relative;z-index:1;}
.sidebar-foot .btn{width:100%;justify-content:center;}
.sidebar-contact{margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.1);}
.sidebar-contact div{color:var(--ink-300);font-size:12.5px;line-height:1.9;}
.sidebar-contact strong{color:#fff;font-weight:600;font-size:13px;}

/* ---------- Topbar / drawer ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;
  background:#fff;border-bottom:1px solid var(--line);z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .brand{padding:0;gap:8px;}
.topbar .brand-text b{color:var(--ink-900);}
.topbar .brand-text span{color:var(--ink-500);}
.burger{
  width:42px;height:42px;border-radius:var(--r-md);border:1px solid var(--line);
  background:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-700);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,16,48,.55);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}

/* ---------- Layout ---------- */
.main{margin-left:var(--sidebar-w);padding:0 0 96px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section.tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head p{color:var(--ink-500);font-size:14px;margin-top:8px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);white-space:nowrap;}
.link-more span{transition:transform .2s ease;}
.link-more:hover span{transform:translateX(3px);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-pill);font-size:15.5px;font-weight:600;cursor:pointer;
  border:1.5px solid transparent;transition:transform .2s ease,box-shadow .25s ease,border-color .2s ease,background-position .4s ease;
  background-size:180% auto;
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:var(--e2);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--e3);background-position:right center;}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-100);}
.btn-ghost:hover{color:var(--brand-700);border-color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--e1);}
.btn:active{transform:scale(.98);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{padding:64px 0 72px;}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;min-height:560px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-700);font-size:12.5px;font-weight:600;margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent-500);font-style:normal;}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--ink-500);max-width:520px;margin-bottom:24px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:#fff;border:1.5px solid var(--brand-100);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{position:relative;}
.hero-img{
  border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--e3);aspect-ratio:16/10;background:var(--brand-100);
}
.hero-img img{width:100%;height:100%;object-fit:cover;}
.hero-badges{position:absolute;right:-12px;bottom:-20px;display:flex;flex-direction:column;gap:10px;align-items:flex-end;}
.badge-grad{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:13px;font-weight:600;box-shadow:var(--e2);
  font-variant-numeric:tabular-nums;
}
.badge-grad b{font-weight:800;}

/* ---------- Stat strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--e1);transition:box-shadow .25s ease,transform .25s ease;
}
.stat-card:hover{box-shadow:var(--e3);transform:translateY(-2px);}
.stat-card b{display:block;font-size:24px;color:var(--ink-900);font-weight:800;font-variant-numeric:tabular-nums;}
.stat-card span{display:block;font-size:13.5px;color:var(--ink-500);margin-top:6px;}

/* ---------- Feature asymmetric ---------- */
.feature-grid{display:grid;grid-template-columns:60% 1fr;gap:24px;align-items:stretch;}
.feature-main{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--e1);display:flex;flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.feature-main:hover{box-shadow:var(--e3);transform:translateY(-2px);border-color:var(--brand-100);}
.feature-main .media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.feature-main .media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.feature-main:hover .media img{transform:scale(1.03);}
.feature-main .body{padding:28px;}
.feature-main .body p{color:var(--ink-500);font-size:15px;margin-top:10px;}
.feature-side{display:flex;flex-direction:column;gap:24px;}
.mini-card{
  flex:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--e1);transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;justify-content:center;
}
.mini-card:hover{box-shadow:var(--e3);transform:translateY(-2px);border-color:var(--brand-100);}
.mini-icon{
  width:42px;height:42px;border-radius:12px;background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-style:normal;margin-bottom:14px;
}
.mini-card h3{margin-bottom:8px;}
.mini-card p{font-size:14px;color:var(--ink-500);}

/* ---------- Tabs / steps ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.tab{
  height:40px;padding:0 20px;border-radius:var(--r-pill);border:1.5px solid var(--line);
  background:#fff;color:var(--ink-700);font-size:14.5px;font-weight:600;cursor:pointer;
  transition:all .2s ease;
}
.tab:hover{border-color:var(--brand-400);color:var(--brand-600);}
.tab.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:var(--e2);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--e1);transition:box-shadow .25s ease,transform .25s ease;
}
.step:hover{box-shadow:var(--e3);transform:translateY(-2px);}
.step-shot{
  aspect-ratio:16/9;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--e1);margin-bottom:16px;background:var(--brand-100);
}
.step-shot img{width:100%;height:100%;object-fit:cover;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;
  border-radius:50%;background:var(--grad);color:#fff;font-size:12.5px;font-weight:700;
  font-variant-numeric:tabular-nums;margin-bottom:10px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-500);}

/* ---------- Social ---------- */
.social{display:grid;grid-template-columns:40% 1fr;gap:40px;align-items:center;}
.social-stats{display:flex;flex-direction:column;gap:20px;}
.social-stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--e1);}
.social-stat b{font-size:32px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;}
.social-stat span{display:block;color:var(--ink-500);font-size:14px;margin-top:4px;}
.quote-list{display:flex;flex-direction:column;gap:20px;}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--e1);transition:box-shadow .25s ease,transform .25s ease;
}
.quote-card:hover{box-shadow:var(--e3);transform:translateY(-2px);}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;flex:0 0 44px;
}
.quote-top b{display:block;font-size:15px;color:var(--ink-900);}
.quote-top em{font-style:normal;font-size:12.5px;color:var(--ink-500);}
.stars{color:var(--accent-500);font-size:13px;letter-spacing:2px;margin-bottom:8px;}
.quote-card p{font-size:14.5px;color:var(--ink-700);}
.logo-strip{display:flex;flex-wrap:wrap;gap:16px;margin-top:44px;justify-content:space-between;}
.logo-box{
  flex:1 1 140px;height:64px;border-radius:var(--r-md);border:1px solid var(--line);
  background:#fff;display:flex;align-items:center;justify-content:center;
  color:var(--ink-300);font-size:13px;font-weight:600;opacity:.55;
  transition:opacity .25s ease,box-shadow .25s ease;
}
.logo-box:hover{opacity:1;box-shadow:var(--e1);}

/* ---------- Posts ---------- */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--e1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;color:inherit;
}
.post-card:hover{box-shadow:var(--e3);transform:translateY(-2px);border-color:var(--brand-100);color:inherit;}
.post-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-media img{transform:scale(1.03);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--accent-100);color:#C9451A;font-size:12.5px;font-weight:600;align-self:flex-start;
}
.post-body h3{
  font-size:17px;margin-top:12px;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body p{
  font-size:14px;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--ink-500);font-variant-numeric:tabular-nums;
}
.post-meta .arrow{transition:transform .2s ease;color:var(--brand-600);font-weight:700;}
.post-card:hover .post-meta .arrow{transform:translateX(3px);}
.empty-state{
  grid-column:1/-1;border:1.5px dashed var(--brand-400);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.6);
}
.empty-state i{display:block;font-style:normal;font-size:26px;color:var(--brand-400);margin-bottom:12px;}
.empty-state p{color:var(--ink-500);font-size:14.5px;margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  position:relative;overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad);
  transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
}
.faq-item.open{box-shadow:var(--e2);border-color:var(--brand-100);}
.faq-item.open::before{transform:scaleY(1);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-100);
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;transition:transform .2s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding:0 24px 22px;color:var(--ink-500);font-size:14.5px;}
.faq-item.open .faq-a{max-height:320px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink-900);border-radius:var(--r-xl);padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;top:-120px;right:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,98,240,.55),transparent 68%);
}
.cta-band h2{color:#fff;position:relative;z-index:1;max-width:620px;}
.cta-band p{color:var(--ink-300);font-size:14.5px;margin-top:12px;position:relative;z-index:1;}
.cta-band .btn{position:relative;z-index:1;flex:0 0 auto;}

/* ---------- Floating CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:80;
  display:flex;align-items:center;gap:10px;
  background-image:var(--grad);background-size:180% auto;
  border-radius:var(--r-pill);padding:8px 8px 8px 22px;box-shadow:var(--e3);
}
.float-cta span{color:#fff;font-size:14px;font-weight:600;}
.float-cta a{
  width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.22);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;
}
.float-cta a:hover{background:#fff;color:var(--brand-600);}

/* ---------- Footer ---------- */
.footer{background:var(--ink-900);border-top:1px solid transparent;border-image:var(--grad) 1;margin-top:24px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 40px;
}
.footer h4{
  font-size:13px;font-weight:600;color:rgba(255,255,255,.6);
  margin:0 0 16px;letter-spacing:.5px;
}
.footer p{color:var(--ink-300);font-size:13.5px;line-height:1.9;}
.footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer ul a{color:var(--ink-300);font-size:14px;}
.footer ul a:hover{color:#fff;}
.footer .brand{padding:0 0 16px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:var(--ink-300);font-size:12.5px;
}

/* ---------- Responsive ---------- */
@media (min-width:1024px) and (max-width:1439px){
  :root{--sidebar-w:224px;}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);transition:transform .28s ease;width:280px;}
  body.drawer-open .sidebar{transform:translateX(0);}
  body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
  .sidebar .nav-item{height:48px;font-size:15px;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:60px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:0;padding-top:32px;}
  .feature-grid{grid-template-columns:1fr;}
  .social{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:1fr;}
  .posts-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stat-strip{display:flex;overflow-x:auto;gap:16px;padding-bottom:6px;}
  .stat-card{flex:0 0 232px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero{padding:32px 0 48px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .hero-badges{position:static;flex-direction:row;flex-wrap:wrap;margin-top:16px;align-items:flex-start;}
  .stat-card{flex:0 0 200px;}
  .feature-main .body{padding:20px;}
  .mini-card{padding:20px;}
  .posts-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 22px;border-radius:var(--r-lg);}
  .cta-band .btn{width:100%;justify-content:center;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 28px;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;padding:8px 14px;
    justify-content:space-between;background:#fff;background-image:none;
    border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(27,16,48,.08);
  }
  .float-cta span{display:none;}
  .float-cta .btn{width:100%;justify-content:center;}
  .float-cta .icon-btn{
    background:var(--brand-100);color:var(--brand-600);
  }
  .main{padding-bottom:96px;}
}
@media (max-width:519px){
  h1{font-size:26px;}
  .hero-badges{gap:8px;}
  .badge-grad{height:30px;font-size:12px;padding:0 12px;}
  .logo-strip{gap:10px;}
  .logo-box{flex:1 1 100%;}
}

/* roulang page: article */
:root{
  --brand-700:#4A1FB0;
  --brand-600:#5C2BD6;
  --brand-400:#8B62F0;
  --brand-100:#EDE6FE;
  --accent-500:#FF7A45;
  --accent-100:#FFE7DC;
  --ink-900:#1B1030;
  --ink-700:#3A2A5C;
  --ink-500:#6B5E86;
  --ink-300:#A99FC0;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:#EDE8F5;
  --ok:#12B39C;
  --warn:#E8A33D;
  --danger:#D94A4A;
  --grad:linear-gradient(120deg,#5C2BD6 0%,#8B62F0 45%,#FF7A45 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --e1:0 2px 8px rgba(27,16,48,.06);
  --e2:0 10px 24px rgba(27,16,48,.09);
  --e3:0 18px 40px rgba(92,43,214,.18);
  --sidebar:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:0;line-height:1.4;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-100);color:var(--brand-700);}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 布局骨架 ---------- */
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.page{flex:1;padding:28px 0 88px;}

/* ---------- 顶部栏（移动端） ---------- */
.topbar{
  display:none;
  align-items:center;
  justify-content:space-between;
  height:60px;
  padding:0 18px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:70;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:12px;
  background:var(--grad);
  display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:13px;
  box-shadow:var(--e2);
}
.brand-text b{display:block;font-size:15px;font-weight:800;color:#fff;line-height:1.3;}
.brand-text span{display:block;font-size:11.5px;color:var(--ink-300);letter-spacing:.5px;line-height:1.4;}
.topbar .brand-text b{color:var(--ink-900);}
.topbar .brand-text span{color:var(--ink-500);}
.burger{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-content:center;gap:5px;
  border:1px solid var(--line);
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:.2s;}

/* ---------- 侧栏 / 抽屉 ---------- */
.sidebar{
  position:fixed;left:0;top:0;
  width:var(--sidebar);height:100vh;
  background:var(--ink-900);
  padding:24px 16px 20px;
  display:flex;flex-direction:column;
  overflow-y:auto;
  z-index:80;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{width:0;}
.sidebar::after{
  content:"";position:absolute;right:-50px;top:-50px;
  width:170px;height:170px;border-radius:50%;
  background:var(--grad);filter:blur(52px);opacity:.45;
  pointer-events:none;
}
.sidebar .brand{position:relative;z-index:1;padding:0 8px 20px;}
.nav-label{
  font-size:11.5px;font-weight:600;letter-spacing:1.4px;
  color:rgba(255,255,255,.4);
  margin:20px 12px 8px;
}
.nav{display:flex;flex-direction:column;gap:4px;position:relative;z-index:1;}
.nav a{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;
  border-radius:var(--r-md);
  color:rgba(255,255,255,.78);
  font-size:14.5px;
  transition:background .18s ease,color .18s ease;
}
.nav a svg{width:17px;height:17px;flex:0 0 17px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.85;}
.nav a:hover{background:rgba(255,255,255,.08);color:#fff;}
.nav a.active{background:var(--grad);color:#fff;font-weight:600;box-shadow:var(--e3);}
.nav a.active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:2px;background:var(--grad);
}
.side-cta{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);position:relative;z-index:1;}
.side-cta p{font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.7;margin-bottom:12px;padding:0 4px;}
.side-cta .btn{width:100%;justify-content:center;}
.side-contact{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.45);padding:0 4px;line-height:1.9;}
.side-contact a{color:rgba(255,255,255,.72);border-bottom:1px dashed rgba(255,255,255,.25);}
.side-contact a:hover{color:#fff;}
.overlay{
  position:fixed;inset:0;background:rgba(27,16,48,.55);
  opacity:0;visibility:hidden;transition:.24s;z-index:75;
}
.overlay.show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  transition:transform .18s ease,box-shadow .18s ease,background-position .4s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);background-size:180% 180%;color:#fff;box-shadow:var(--e2);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--e3);background-position:100% 50%;}
.btn-ghost{background:var(--surface);color:var(--brand-600);border:1.5px solid var(--brand-100);}
.btn-ghost:hover{border-color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--e2);}
.btn:active{transform:scale(.98);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.link-more{color:var(--brand-600);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.link-more i{font-style:normal;transition:transform .18s ease;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;white-space:nowrap;
}
.badge-soft{background:var(--brand-100);color:var(--brand-700);}
.badge-accent{background:var(--accent-100);color:#C4471A;}
.badge-grad{background:var(--grad);color:#fff;}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-500);
}
.crumbs a{color:var(--ink-500);}
.crumbs a:hover{color:var(--brand-600);}
.crumbs .sep{color:var(--ink-300);}
.crumbs .current{
  color:var(--ink-500);
  max-width:min(520px,58vw);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章头部 ---------- */
.article-head{padding:26px 0 0;}
.article-title{
  font-size:clamp(24px,3.2vw,38px);
  font-weight:800;
  line-height:1.35;
  margin:16px 0 14px;
  color:var(--ink-900);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:14px;color:var(--ink-500);
  padding:0 0 24px;
  border-bottom:1px solid var(--line);
}
.meta-row .vd{width:1px;height:14px;background:var(--line);}
.meta-row b{color:var(--ink-700);font-weight:600;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
  padding-top:36px;
}
.article-body{max-width:760px;}
.prose{font-size:16.5px;line-height:1.9;color:var(--ink-700);}
.prose>*+*{margin-top:1.2em;}
.prose h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  font-weight:800;
  color:var(--ink-900);
  line-height:1.5;
  margin-top:2.1em;
  padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:4px;height:.9em;border-radius:2px;background:var(--grad);
}
.prose h3{
  font-size:18px;font-weight:700;color:var(--brand-700);
  border-left:2px solid var(--brand-600);
  padding-left:10px;margin-top:1.8em;line-height:1.6;
}
.prose h4{font-size:16.5px;font-weight:700;color:var(--ink-900);margin-top:1.6em;}
.prose p{margin:0;}
.prose ul,.prose ol{padding-left:1.35em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li+li{margin-top:.5em;}
.prose li::marker{color:var(--brand-400);}
.prose a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--accent-500);}
.prose strong{color:var(--ink-900);}
.prose img{border-radius:var(--r-md);box-shadow:var(--e1);margin:1.6em auto;}
.prose blockquote{
  position:relative;
  background:var(--brand-100);
  border-radius:var(--r-md);
  padding:16px 22px 16px 26px;
  color:var(--ink-700);
  font-size:15.5px;
}
.prose blockquote::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;
  width:4px;border-radius:2px;background:var(--grad);
}
.prose hr{border:0;height:1px;background:var(--line);margin:2.2em 0;}
.prose table{
  width:100%;border-collapse:collapse;overflow:hidden;
  border-radius:var(--r-md);box-shadow:var(--e1);font-size:15px;
  background:var(--surface);
}
.prose th{background:var(--brand-100);color:var(--ink-900);text-align:left;padding:12px 14px;font-weight:600;}
.prose td{padding:12px 14px;border-top:1px solid var(--line);}
.prose tbody tr{transition:background .16s ease;}
.prose tbody tr:hover{background:#FBF9FF;}
.prose pre{
  background:var(--ink-900);color:#E9E3FB;
  padding:16px 18px;border-radius:var(--r-md);
  overflow-x:auto;font-size:13.5px;line-height:1.7;
}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.prose :not(pre)>code{background:var(--brand-100);color:var(--brand-700);padding:2px 6px;border-radius:6px;font-size:.9em;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1.5px dashed var(--brand-100);
  border-radius:var(--r-lg);
  background:var(--surface);
  padding:56px 24px;
  text-align:center;
  box-shadow:var(--e1);
}
.empty-state .ico{
  width:56px;height:56px;border-radius:18px;margin:0 auto 18px;
  background:var(--brand-100);display:grid;place-items:center;
}
.empty-state .ico svg{width:26px;height:26px;stroke:var(--brand-600);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:8px;}
.empty-state p{color:var(--ink-500);font-size:14.5px;margin-bottom:22px;}

/* ---------- 侧栏卡片 ---------- */
.aside{display:none;}
.side-card{
  position:sticky;top:28px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--e1);
}
.side-card+.side-card{margin-top:20px;position:static;}
.side-card .label{
  font-size:12.5px;font-weight:600;letter-spacing:1px;
  color:var(--ink-300);margin-bottom:12px;
}
.side-list li{height:56px;display:flex;align-items:center;}
.side-list li+li{border-top:1px solid var(--line);}
.side-list a{display:flex;align-items:center;gap:10px;width:100%;font-size:14.5px;color:var(--ink-700);transition:color .18s ease;}
.side-list a:hover{color:var(--brand-600);}
.side-list .dot{width:8px;height:8px;border-radius:3px;background:var(--grad);flex:0 0 8px;}
.side-note{font-size:13.5px;color:var(--ink-500);line-height:1.8;}

/* ---------- 文末导航 ---------- */
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  margin-top:48px;padding-top:36px;border-top:1px solid var(--line);
}
.post-card{
  display:flex;flex-direction:column;gap:8px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--e1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--e3);border-color:var(--brand-100);}
.post-card .k{font-size:12.5px;color:var(--ink-300);font-weight:600;letter-spacing:1px;}
.post-card .t{font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.55;}
.post-card .d{font-size:13.5px;color:var(--ink-500);}
.post-card .arw{color:var(--brand-600);font-weight:600;font-size:14px;}
.post-card.right{text-align:right;align-items:flex-end;}
.back-row{margin-top:26px;}

/* ---------- 通用板块标题 ---------- */
.section{padding-top:72px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;}
.section-head p{font-size:14.5px;color:var(--ink-500);margin-top:8px;}

/* ---------- 卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--e1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--e3);border-color:var(--brand-100);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17.5px;font-weight:700;line-height:1.55;color:var(--ink-900);}
.card-body .desc{
  font-size:14px;color:var(--ink-500);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-300);
}
.card-meta .go{color:var(--brand-600);font-weight:600;}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;}
.faq details{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:0 22px;
  box-shadow:var(--e1);
  transition:border-color .2s ease,box-shadow .2s ease;
  overflow:hidden;
}
.faq details:hover{border-color:var(--brand-100);box-shadow:var(--e2);}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .plus{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq details[open] summary .plus{transform:rotate(45deg);background:var(--grad);color:#fff;border-color:transparent;}
.faq details[open]{border-color:var(--brand-100);}
.faq .ans{
  position:relative;
  padding:0 0 20px 16px;
  font-size:14.5px;color:var(--ink-500);line-height:1.85;
}
.faq .ans::before{
  content:"";position:absolute;left:0;top:4px;bottom:22px;
  width:4px;border-radius:2px;background:var(--grad);
}

/* ---------- CTA ---------- */
.cta-block{
  margin-top:72px;
  background:var(--brand-100);
  border-radius:var(--r-lg);
  padding:36px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.cta-block h2{font-size:clamp(20px,2.2vw,26px);font-weight:800;}
.cta-block p{font-size:14.5px;color:var(--ink-500);margin-top:8px;}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;
  background:var(--ink-900);
  color:var(--ink-300);
  border-top:1px solid transparent;
  background-image:linear-gradient(var(--ink-900),var(--ink-900)),var(--grad);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer .brand{padding:0 0 16px;}
.footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);}
.footer h4{
  font-size:13px;font-weight:600;letter-spacing:1px;
  color:rgba(255,255,255,.55);margin-bottom:14px;
}
.footer ul li+li{margin-top:10px;}
.footer ul a{font-size:14px;color:var(--ink-300);transition:color .18s ease;}
.footer ul a:hover{color:#fff;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:12.5px;color:rgba(255,255,255,.42);
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;}
  .aside{display:block;}
}
@media (min-width:1024px) and (max-width:1439px){
  :root{--sidebar:224px;}
}
@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{
    transform:translateX(-100%);
    transition:transform .26s ease;
    width:280px;
    box-shadow:var(--e3);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .nav a{height:48px;font-size:15px;}
  .main{margin-left:0;}
  .page{padding:20px 0 64px;}
  .section{padding-top:56px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .article-title{font-size:24px;}
  .grid-3{grid-template-columns:1fr;}
  .post-nav{grid-template-columns:1fr;}
  .post-card.right{text-align:left;align-items:flex-start;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-block .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer{padding:44px 0 22px;}
  .meta-row{gap:8px;font-size:13px;}
  .meta-row .vd{display:none;}
  .prose{font-size:16px;}
  .prose table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:520px){
  .crumbs .current{max-width:62vw;}
  .btn{width:100%;}
  .back-row .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand-700:#4A1FB0;
  --brand-600:#5C2BD6;
  --brand-400:#8B62F0;
  --brand-100:#EDE6FE;
  --accent-500:#FF7A45;
  --accent-100:#FFE7DC;
  --ink-900:#1B1030;
  --ink-700:#3A2A5C;
  --ink-500:#6B5E86;
  --ink-300:#A99FC0;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:#EDE8F5;
  --ok:#12B39C;
  --warn:#E8A33D;
  --danger:#D94A4A;
  --grad:linear-gradient(120deg,#5C2BD6 0%,#8B62F0 45%,#FF7A45 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --pill:999px;
  --e1:0 2px 8px rgba(27,16,48,.06);
  --e2:0 10px 24px rgba(27,16,48,.09);
  --e3:0 18px 40px rgba(92,43,214,.18);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:60px;
  padding-bottom:88px;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}

/* ---------- 顶部栏 ---------- */
.topbar{
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  z-index:60;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 20px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--grad);
  color:#fff;
  font-size:14px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  letter-spacing:.5px;
  box-shadow:var(--e2);
  flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:15px;color:var(--ink-900);font-weight:700;}
.brand-text span{font-size:12px;color:var(--ink-500);}
.burger{
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .2s ease,opacity .2s ease;}
.burger:hover{border-color:var(--brand-400);box-shadow:var(--e1);}
.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);}

/* ---------- 抽屉导航 ---------- */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(27,16,48,.55);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;left:0;bottom:0;
  width:280px;
  max-width:84vw;
  background:var(--ink-900);
  background-image:radial-gradient(220px 220px at 100% 0,rgba(255,122,69,.35),transparent 65%);
  transform:translateX(-102%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  z-index:80;
  display:flex;
  flex-direction:column;
  padding:22px 18px 24px;
  overflow-y:auto;
  scrollbar-width:none;
}
.drawer::-webkit-scrollbar{display:none;}
.drawer.is-open{transform:translateX(0);}
.drawer .brand{margin-bottom:26px;}
.drawer .brand-text b{color:#fff;}
.drawer .brand-text span{color:var(--ink-300);}
.drawer-label{font-size:12.5px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.45);padding:0 12px;margin-bottom:10px;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:26px;}
.drawer-nav a{
  height:48px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 14px;
  border-radius:var(--r-md);
  color:rgba(255,255,255,.82);
  font-size:15px;
  position:relative;
  transition:background .2s ease,color .2s ease;
}
.drawer-nav a i{
  width:8px;height:8px;border-radius:50%;
  background:rgba(255,255,255,.35);
  flex:none;
}
.drawer-nav a:hover{background:rgba(255,255,255,.08);color:#fff;}
.drawer-nav a.active{
  background:var(--grad);
  color:#fff;
  font-weight:600;
  box-shadow:var(--e3);
}
.drawer-nav a.active i{background:#fff;}
.drawer-nav a.active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:2px;
  background:#fff;
}
.drawer-cta{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.drawer-cta .btn{width:100%;justify-content:center;}
.drawer-note{font-size:12.5px;color:var(--ink-300);line-height:1.7;padding:0 4px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:600;
  border:1.5px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease,background-position .35s ease;
}
.btn-primary{
  background:var(--grad);
  background-size:160% 100%;
  background-position:0 0;
  color:#fff;
  box-shadow:var(--e2);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--e3);background-position:100% 0;}
.btn-ghost{
  background:var(--surface);
  color:var(--brand-600);
  border-color:var(--brand-100);
}
.btn-ghost:hover{border-color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--e1);}
.btn-on-dark{
  background:rgba(255,255,255,.14);
  color:#fff;
  border-color:rgba(255,255,255,.42);
  backdrop-filter:blur(6px);
}
.btn-on-dark:hover{background:rgba(255,255,255,.24);border-color:#fff;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn:active{transform:scale(.98);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  min-height:312px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:56px 24px;
  border-radius:0 0 var(--r-xl) var(--r-xl);
  overflow:hidden;
  background-image:linear-gradient(120deg,rgba(74,31,176,.86) 0%,rgba(139,98,240,.66) 45%,rgba(255,122,69,.62) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:auto -80px -140px auto;
  width:340px;height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 62%);
}
.page-hero .container{position:relative;z-index:2;max-width:820px;}
.hero-tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:var(--pill);
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.38);
  color:#fff;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800;
  line-height:1.35;
  letter-spacing:0;
  margin-bottom:14px;
  text-shadow:0 2px 16px rgba(27,16,48,.28);
}
.page-hero p{
  color:rgba(255,255,255,.92);
  font-size:16px;
  max-width:620px;
  margin:0 auto 26px;
}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ---------- 通用标题 ---------- */
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto;}
.sec-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:600;
  color:var(--brand-600);
  background:var(--brand-100);
  border-radius:var(--pill);
  height:26px;
  padding:0 13px;
  margin-bottom:14px;
}
.sec-head h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  color:var(--ink-900);
  line-height:1.4;
  letter-spacing:0;
}
.sec-head p{margin-top:12px;color:var(--ink-500);font-size:15.5px;}

/* ---------- 说明段 ---------- */
.intro-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.intro-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 26px;
  box-shadow:var(--e1);
  position:relative;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.intro-card:hover{box-shadow:var(--e3);transform:translateY(-2px);border-color:var(--brand-100);}
.intro-card::before{
  content:"";
  position:absolute;
  left:26px;top:0;
  width:44px;height:4px;
  border-radius:0 0 4px 4px;
  background:var(--grad);
}
.intro-card h3{font-size:19px;color:var(--ink-900);font-weight:700;margin:10px 0 12px;}
.intro-card p{font-size:15.5px;color:var(--ink-700);}

/* ---------- 矩阵卡 ---------- */
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.matrix-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--e1);
  display:flex;
  gap:18px;
  align-items:flex-start;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.matrix-card:hover{box-shadow:var(--e3);transform:translateY(-2px);border-color:var(--brand-100);}
.matrix-icon{
  width:52px;height:52px;
  flex:none;
  border-radius:var(--r-md);
  background:var(--grad);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:17px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--e2);
}
.matrix-card h3{font-size:18px;color:var(--ink-900);font-weight:700;margin-bottom:8px;}
.matrix-card p{font-size:15px;color:var(--ink-500);}
.matrix-card .chip-row{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--pill);
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:12.5px;
  font-weight:600;
}
.chip.accent{background:var(--accent-100);color:var(--accent-500);}

/* ---------- 卡片栅格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--e1);
  display:flex;
  flex-direction:column;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.card:hover{box-shadow:var(--e3);transform:translateY(-2px);border-color:var(--brand-100);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#EDE6FE,#FFE7DC);}
.card-media img{width:100%;height:100%;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.5;}
.card-body p{font-size:14.5px;color:var(--ink-500);line-height:1.75;}
.card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--ink-300);
  padding-top:14px;
  border-top:1px solid var(--line);
}
.card-foot .arrow{color:var(--brand-600);font-weight:600;transition:transform .2s ease;}
.card:hover .card-foot .arrow{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;margin:0 auto;}
.faq-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:4px;
  border-radius:0 4px 4px 0;
  background:var(--grad);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.open{border-color:var(--brand-100);box-shadow:var(--e2);}
.faq-item.open::before{opacity:1;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  background:none;
  border:0;
  padding:20px 24px;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
}
.faq-icon{
  position:relative;
  width:22px;height:22px;
  flex:none;
  border-radius:50%;
  background:var(--brand-100);
  transition:transform .2s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand-600);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:background .2s ease;
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-600);}
.faq-item.open .faq-icon::before,
.faq-item.open .faq-icon::after{background:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease;
}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  color:var(--ink-500);
  line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-soft{
  background:var(--brand-100);
  border-radius:var(--r-lg);
  padding:36px 34px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-soft h2{font-size:clamp(20px,2.1vw,26px);font-weight:800;color:var(--ink-900);margin-bottom:10px;line-height:1.4;}
.cta-soft p{font-size:15px;color:var(--ink-700);max-width:620px;}

/* ---------- 底部悬浮转化条 ---------- */
.float-cta{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:55;
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px 12px 10px 22px;
  border-radius:var(--pill);
  background:var(--grad);
  box-shadow:var(--e3);
}
.float-cta span{color:#fff;font-size:14px;font-weight:600;}
.float-cta .btn{background:#fff;color:var(--brand-600);box-shadow:none;height:38px;padding:0 18px;font-size:14px;}
.float-cta .btn:hover{transform:translateY(-1px);}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;
  background:var(--ink-900);
  background-image:radial-gradient(600px 320px at 12% 0,rgba(92,43,214,.42),transparent 70%);
  color:var(--ink-300);
  padding:68px 0 26px;
  margin-top:24px;
}
.footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:3px;
  background:var(--grad);
}
.footer .brand{margin-bottom:18px;}
.footer .brand-text b{color:#fff;}
.footer .brand-text span{color:var(--ink-300);}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-grid p{font-size:14px;line-height:1.85;color:var(--ink-300);max-width:360px;}
.footer h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:rgba(255,255,255,.55);
  margin-bottom:16px;
}
.footer ul{display:flex;flex-direction:column;gap:11px;}
.footer ul a{font-size:14px;color:var(--ink-300);transition:color .2s ease;}
.footer ul a:hover{color:#fff;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:12.5px;
  color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:64px 0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:860px){
  .intro-grid{grid-template-columns:1fr;}
  .matrix{grid-template-columns:1fr;}
}
@media (max-width:768px){
  body{padding-bottom:96px;}
  .section{padding:52px 0;}
  .container{padding:0 18px;}
  .page-hero{min-height:260px;padding:44px 18px;border-radius:0 0 var(--r-xl) var(--r-xl);}
  .page-hero p{font-size:15px;}
  .hero-actions{flex-direction:column;width:100%;}
  .hero-actions .btn{width:100%;}
  .card-grid{grid-template-columns:1fr;}
  .card-body{padding:18px;}
  .intro-card{padding:22px 20px;}
  .matrix-card{padding:22px 20px;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a p{padding:0 18px 20px;}
  .cta-soft{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .float-cta{
    left:0;right:0;bottom:0;
    border-radius:0;
    background:var(--surface);
    border-top:1px solid var(--line);
    padding:10px 16px;
    justify-content:space-between;
    box-shadow:0 -6px 18px rgba(27,16,48,.08);
  }
  .float-cta span{color:var(--ink-700);font-size:13.5px;}
  .footer{padding:52px 0 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .page-hero h1{font-size:24px;}
  .sec-head h2{font-size:21px;}
  .brand-text span{font-size:11.5px;}
}

/* roulang page: category1 */
:root{
  --brand-700:#4A1FB0;
  --brand-600:#5C2BD6;
  --brand-400:#8B62F0;
  --brand-100:#EDE6FE;
  --accent-500:#FF7A45;
  --accent-100:#FFE7DC;
  --ink-900:#1B1030;
  --ink-700:#3A2A5C;
  --ink-500:#6B5E86;
  --ink-300:#A99FC0;
  --bg:#FAF7F3;
  --surface:#FFFFFF;
  --line:#EDE8F5;
  --ok:#12B39C;
  --warn:#E8A33D;
  --danger:#D94A4A;
  --grad:linear-gradient(120deg,#5C2BD6 0%,#8B62F0 45%,#FF7A45 100%);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --e1:0 2px 8px rgba(27,16,48,.06);
  --e2:0 10px 24px rgba(27,16,48,.09);
  --e3:0 18px 40px rgba(92,43,214,.18);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-700);
  background:var(--bg);
  padding-bottom:88px;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 侧栏 App Shell ---------- */
.sidebar{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink-900);
  display:flex;
  flex-direction:column;
  padding:22px 18px 20px;
  z-index:80;
  overflow-y:auto;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{display:none;}
.sidebar-glow{
  position:absolute;top:-60px;right:-70px;width:200px;height:200px;border-radius:50%;
  background:var(--grad);opacity:.35;filter:blur(48px);pointer-events:none;
}
.brand{display:flex;align-items:center;gap:10px;position:relative;z-index:1;}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:0;
  box-shadow:var(--e2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;font-weight:800;color:#fff;letter-spacing:0;}
.brand-text span{font-size:12.5px;color:var(--ink-300);}
.nav-label{
  margin:26px 0 10px;padding-left:10px;
  font-size:12px;font-weight:600;letter-spacing:.14em;
  color:rgba(255,255,255,.42);
}
.side-nav{display:flex;flex-direction:column;gap:6px;position:relative;z-index:1;}
.nav-item{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-md);
  color:rgba(255,255,255,.78);
  font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.nav-item svg{width:19px;height:19px;flex:0 0 19px;opacity:.85;}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;}
.nav-item.active{
  background:var(--grad);color:#fff;font-weight:600;
  box-shadow:var(--e2);
}
.nav-item.active svg{opacity:1;}
.side-foot{margin-top:auto;padding-top:24px;position:relative;z-index:1;}
.side-contact{margin-top:14px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.5);}
.side-contact p+p{margin-top:2px;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 16px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:70;
}
.topbar .brand-text b{color:var(--ink-900);}
.topbar .brand-text span{color:var(--ink-500);}
.topbar .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:11px;font-size:12.5px;}
.burger{width:42px;height:42px;display:grid;place-content:center;gap:5px;border-radius:12px;}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .2s ease;}
.burger:hover{background:var(--brand-100);}
.overlay{
  position:fixed;inset:0;background:rgba(27,16,48,.55);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:75;
}
.overlay.show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.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;letter-spacing:0;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease,background-position .3s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);background-size:200% 100%;background-position:0 0;
  color:#fff;box-shadow:var(--e2);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--e3);background-position:60% 0;}
.btn-secondary{
  background:var(--surface);color:var(--brand-600);
  border:1.5px solid var(--brand-100);
}
.btn-secondary:hover{border-color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--e1);}
.btn-ghost-light{
  background:rgba(255,255,255,.14);color:#fff;
  border:1.5px solid rgba(255,255,255,.62);
  backdrop-filter:blur(6px);
}
.btn-ghost-light:hover{background:#fff;color:var(--brand-700);border-color:#fff;transform:translateY(-2px);}
.btn:active{transform:scale(.98);}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-600);font-size:14.5px;font-weight:600;
}
.link-more span{transition:transform .2s ease;}
.link-more:hover span{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
}
.badge-grad{background:var(--grad);color:#fff;}
.badge-soft{background:var(--brand-100);color:var(--brand-600);}
.badge-accent{background:var(--accent-100);color:var(--accent-500);}

/* ---------- 分类页 Hero ---------- */
.page-hero{
  position:relative;
  min-height:300px;
  display:flex;align-items:center;
  overflow:hidden;
  border-radius:0 0 var(--r-xl) var(--r-xl);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:var(--grad);opacity:.62;
}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px;}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  line-height:1.25;font-weight:800;color:#fff;
  max-width:760px;letter-spacing:0;
}
.page-hero .hero-sub{
  margin-top:14px;font-size:16.5px;color:rgba(255,255,255,.9);
  max-width:600px;
}
.hero-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.4);
  color:#fff;font-size:12.5px;font-weight:600;
  margin-bottom:16px;
}
.page-hero .btn{margin-top:26px;}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.eyebrow{
  display:inline-block;margin-bottom:12px;
  font-size:12.5px;font-weight:600;letter-spacing:.12em;
  color:var(--brand-600);
}
.section-head h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.35;font-weight:800;color:var(--ink-900);letter-spacing:0;
}
.section-head p{margin-top:12px;color:var(--ink-500);font-size:15.5px;}
.lead-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:32px;box-shadow:var(--e1);
}
.lead-card p+p{margin-top:18px;}
.lead-card p{color:var(--ink-700);font-size:16px;}
.lead-grid{display:grid;gap:24px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;}
.tl-item{position:relative;padding-left:76px;padding-bottom:24px;}
.tl-item::before{
  content:"";position:absolute;left:23px;top:52px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--brand-400),var(--accent-500));
  opacity:.55;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-dot{
  position:absolute;left:0;top:0;
  width:48px;height:48px;border-radius:14px;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-size:15px;font-weight:800;
  font-variant-numeric:tabular-nums;
  box-shadow:var(--e2);
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px 24px;
  box-shadow:var(--e1);
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.tl-card:hover{border-color:var(--brand-100);box-shadow:var(--e3);transform:translateY(-2px);}
.tl-card h3{font-size:19px;font-weight:700;color:var(--ink-900);}
.tl-card p{margin-top:8px;color:var(--ink-500);font-size:15px;}
.tl-card .tl-meta{
  display:inline-block;margin-top:12px;
  font-size:12.5px;color:var(--ink-300);font-weight:600;
  font-variant-numeric:tabular-nums;
}

/* ---------- 卡片栅格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--e1);
  display:flex;flex-direction:column;
  transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease;
}
.card:hover{border-color:var(--brand-100);box-shadow:var(--e3);transform:translateY(-2px);}
.card-cover{
  position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#EDE6FE,#FFE7DC);
}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-cover img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{
  font-size:18.5px;font-weight:700;color:var(--ink-900);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  color:var(--ink-500);font-size:15px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:12px;
  display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);
  font-size:12.5px;color:var(--ink-300);font-weight:600;
}
.card-foot .arrow{color:var(--brand-600);transition:transform .2s ease;}
.card:hover .card-foot .arrow{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  position:relative;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:var(--grad);opacity:0;transition:opacity .2s ease;
}
.faq-item[open]{box-shadow:var(--e2);border-color:var(--brand-100);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  font-size:16.5px;font-weight:600;color:var(--ink-900);
}
.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(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 24px 22px;color:var(--ink-500);font-size:15px;}

/* ---------- 浅色 CTA ---------- */
.cta-soft{
  background:var(--brand-100);
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cta-soft h2{font-size:clamp(21px,2.2vw,27px);font-weight:800;color:var(--ink-900);line-height:1.4;}
.cta-soft p{margin-top:10px;color:var(--ink-700);font-size:15.5px;max-width:560px;}

/* ---------- 底部悬浮条 ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:60;
  display:flex;align-items:center;gap:14px;
  padding:10px 12px 10px 20px;border-radius:var(--r-pill);
  background:var(--grad);box-shadow:var(--e3);
}
.float-cta span{color:#fff;font-size:14.5px;font-weight:600;}
.float-cta .float-btn{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--r-pill);background:#fff;color:var(--brand-700);
  font-size:14.5px;font-weight:700;
  transition:transform .2s ease;
}
.float-cta .float-btn:hover{transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;background:var(--ink-900);
  padding:64px 0 28px;color:var(--ink-300);
}
.footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);
}
.footer .brand-text b{font-size:17px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
}
.footer-grid p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:rgba(255,255,255,.5);}
.footer ul{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.footer ul a{font-size:14px;color:var(--ink-300);transition:color .2s ease;}
.footer ul a:hover{color:#fff;}
.footer-bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--sidebar-w);}
  .topbar{display:none;}
  .overlay{display:none;}
  .sidebar{transform:none;}
}
@media (min-width:1200px) and (max-width:1439px){
  :root{--sidebar-w:224px;}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);transition:transform .28s ease;width:280px;}
  .sidebar.open{transform:none;}
  .nav-item{height:48px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .section{padding:60px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  body{padding-bottom:76px;}
  .page-hero{min-height:260px;border-radius:0 0 var(--r-lg) var(--r-lg);}
  .page-hero .container{padding-top:34px;padding-bottom:34px;}
  .grid-3{grid-template-columns:1fr;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .lead-card{padding:24px;}
  .tl-item{padding-left:64px;}
  .tl-dot{width:40px;height:40px;border-radius:12px;font-size:13.5px;}
  .tl-item::before{left:19px;top:44px;}
  .cta-soft{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-soft .btn{width:100%;}
  .faq-item summary{padding:18px;font-size:15.5px;}
  .faq-item .faq-body{padding:0 18px 18px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    padding:10px 14px;justify-content:space-between;
  }
  .float-cta span{font-size:13.5px;}
  .footer{padding:48px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:26px;}
  .hero-sub{font-size:15px;}
  .btn{width:100%;}
  .link-more{width:auto;}
}