/* roulang page: index */
:root{
  --brand:#1C55D6;
  --brand-deep:#143A9E;
  --accent:#F2A93B;
  --support:#12A594;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --text:#101B2E;
  --muted:#5C6B84;
  --radius-card:16px;
  --radius-input:10px;
  --radius-pill:999px;
  --shadow-base:0 1px 2px rgba(16,32,64,.04), 0 14px 34px -18px rgba(20,48,110,.18);
  --shadow-hover:0 22px 44px -20px rgba(20,48,110,.26);
  --space-section:88px;
  --gap:24px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;color:var(--text);letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.container{max-width:1180px;margin:0 auto;padding:0 32px;width:100%;}
.section{padding:var(--space-section) 0;}
.section--tint{background:var(--bg);}
.section--white{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:1.4px;
  color:var(--brand);background:rgba(28,85,214,.09);
  padding:5px 12px;border-radius:var(--radius-pill);margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s ease,box-shadow .2s ease,transform .18s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -14px rgba(28,85,214,.7);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:var(--surface);color:var(--brand);border-color:rgba(28,85,214,.4);}
.btn-outline:hover{background:rgba(28,85,214,.06);color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line);}
.btn-ghost:hover{background:#fff;color:var(--brand-deep);border-color:rgba(28,85,214,.35);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* 标签与徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 11px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:600;line-height:1;
  background:rgba(18,165,148,.12);color:#0B6C61;
}
.badge--accent{background:rgba(242,169,59,.18);color:#8A5A0B;}
.badge--brand{background:rgba(28,85,214,.1);color:var(--brand-deep);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -18px rgba(20,48,110,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%,#2F6BEA 100%);
  color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;
}
.brand-text strong{display:block;font-size:16px;font-weight:700;letter-spacing:.2px;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.4px;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;color:var(--text);
  border-radius:var(--radius-pill);font-weight:500;
}
.nav-link:hover{color:var(--brand-deep);background:rgba(28,85,214,.06);}
.nav-link.is-active{color:var(--brand-deep);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand-deep);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:16px;}
.text-link{font-size:14px;font-weight:600;color:var(--muted);}
.text-link:hover{color:var(--brand-deep);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:12px;color:var(--text);
  cursor:pointer;font-size:17px;
}
.nav-toggle:hover{border-color:rgba(28,85,214,.4);color:var(--brand-deep);}

/* 移动抽屉 */
.off-canvas{background:#fff;width:308px;padding:0;z-index:120;}
.off-canvas-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.off-canvas-header strong{font-size:15px;}
.off-canvas-close{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:#fff;
  color:var(--muted);cursor:pointer;font-size:16px;
}
.off-canvas-close:hover{color:var(--brand-deep);border-color:rgba(28,85,214,.4);}
.drawer-nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:13px 14px;border-radius:12px;font-size:15px;color:var(--text);font-weight:500;
}
.drawer-link:hover{background:rgba(28,85,214,.07);color:var(--brand-deep);}
.drawer-link.is-active{background:rgba(28,85,214,.1);color:var(--brand-deep);font-weight:700;}
.drawer-foot{padding:18px 20px 26px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
.drawer-foot .btn{margin-bottom:14px;}
.drawer-foot p{margin-bottom:6px;}
.is-open-body{overflow:hidden;}

/* Hero */
.hero{
  position:relative;background-image:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(240,245,255,.9) 52%,rgba(232,240,255,.78) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-inner{padding:86px 0 68px;}
.hero-grid{display:flex;gap:56px;align-items:center;}
.hero-copy{flex:1 1 58%;max-width:640px;}
.hero h1{font-size:clamp(28px,4vw,44px);margin-bottom:20px;letter-spacing:.3px;}
.hero h1 span{color:var(--brand-deep);}
.hero-lead{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-notes{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:14px;color:var(--muted);}
.hero-notes i{color:var(--support);margin-right:7px;}
.hero-side{flex:1 1 38%;min-width:280px;}
.hero-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-base);padding:26px 24px;
}
.hero-card h3{font-size:17px;margin-bottom:6px;}
.hero-card .hero-card-sub{font-size:13px;color:var(--muted);margin-bottom:22px;}
.steps-line{position:relative;padding-left:6px;}
.step-node{display:flex;gap:14px;align-items:flex-start;position:relative;padding-bottom:24px;}
.step-node:last-child{padding-bottom:0;}
.step-node::before{
  content:"";position:absolute;left:13px;top:28px;bottom:0;width:2px;background:var(--line);
}
.step-node:last-child::before{display:none;}
.step-dot{
  position:relative;z-index:1;width:28px;height:28px;flex:0 0 28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  background:var(--brand);color:#fff;
}
.step-dot--doing{background:#fff;border:2px solid var(--accent);color:#8A5A0B;animation:breathe 2.4s ease-in-out infinite;}
.step-dot--todo{background:#fff;border:2px solid var(--line);color:var(--muted);}
@keyframes breathe{0%,100%{box-shadow:0 0 0 0 rgba(242,169,59,.35);}50%{box-shadow:0 0 0 6px rgba(242,169,59,0);}}
.step-text strong{display:block;font-size:15px;font-weight:600;}
.step-text em{font-style:normal;font-size:13px;color:var(--muted);}
.progress-wrap{margin-top:22px;}
.progress-bar{height:6px;border-radius:var(--radius-pill);background:var(--line);overflow:hidden;}
.progress-bar span{display:block;height:100%;width:64%;border-radius:var(--radius-pill);background:linear-gradient(90deg,var(--brand),#4C82F0);}
.progress-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:9px;}

/* Zigzag 流程 */
.zigzag{display:flex;flex-direction:column;gap:64px;}
.zig-row{display:flex;align-items:center;gap:48px;}
.zig-row:nth-child(even){flex-direction:row-reverse;}
.zig-media{flex:1 1 48%;}
.zig-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--shadow-base);
}
.zig-body{flex:1 1 52%;}
.zig-index{
  font-size:14px;font-weight:700;color:var(--brand);letter-spacing:2px;
  font-variant-numeric:tabular-nums;margin-bottom:12px;display:block;
}
.zig-body h3{font-size:22px;margin-bottom:14px;}
.zig-body p{color:var(--muted);margin-bottom:18px;}
.zig-list li{position:relative;padding-left:22px;margin-bottom:10px;font-size:15px;color:var(--text);}
.zig-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:rgba(28,85,214,.28);
}
.zig-list li strong{font-weight:600;color:var(--brand-deep);}

/* 奖励横滑卡 */
.reward-scroller{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.reward-scroller::-webkit-scrollbar{height:8px;}
.reward-scroller::-webkit-scrollbar-thumb{background:rgba(28,85,214,.22);border-radius:var(--radius-pill);}
.reward-card{
  flex:0 0 320px;scroll-snap-align:start;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-base);padding:24px 22px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.reward-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.reward-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.reward-icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:rgba(28,85,214,.1);color:var(--brand-deep);font-size:18px;
}
.reward-card h3{font-size:19px;margin-bottom:8px;}
.reward-card p{font-size:14px;color:var(--muted);min-height:44px;}
.reward-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.reward-value{font-size:22px;font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums;}
.reward-value small{font-size:12px;font-weight:500;color:var(--muted);margin-left:3px;}

/* 进度时间线区块 */
.timeline-layout{display:flex;gap:44px;align-items:flex-start;}
.timeline{flex:1 1 46%;}
.tl-item{display:flex;gap:16px;padding-bottom:26px;position:relative;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{content:"";position:absolute;left:13px;top:30px;bottom:0;width:2px;background:var(--line);}
.tl-item:last-child::before{display:none;}
.tl-dot{
  width:28px;height:28px;flex:0 0 28px;border-radius:50%;position:relative;z-index:1;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
}
.tl-dot--done{background:var(--brand);color:#fff;}
.tl-dot--now{background:#fff;border:2px solid var(--accent);color:#8A5A0B;}
.tl-dot--wait{background:#fff;border:2px solid var(--line);color:var(--muted);}
.tl-text strong{display:block;font-size:16px;margin-bottom:4px;}
.tl-text span{font-size:14px;color:var(--muted);}
.timeline-progress{flex:1 1 54%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 26px;box-shadow:var(--shadow-base);}
.timeline-progress h3{font-size:20px;margin-bottom:10px;}
.timeline-progress > p{font-size:14px;color:var(--muted);margin-bottom:24px;}
.mini-progress{margin-bottom:20px;}
.mini-progress .top{display:flex;justify-content:space-between;font-size:13px;margin-bottom:8px;}
.mini-progress .top strong{font-weight:600;}
.mini-progress .top span{color:var(--muted);font-variant-numeric:tabular-nums;}
.bar{height:6px;border-radius:var(--radius-pill);background:var(--line);overflow:hidden;}
.bar span{display:block;height:100%;border-radius:var(--radius-pill);background:var(--brand);}
.bar span.accent{background:var(--accent);}
.bar span.support{background:var(--support);}

/* CTA 带 */
.cta-band{
  background:linear-gradient(96deg,#E9F0FF 0%,#F4F8FF 60%,#EEF4FF 100%);
  border:1px solid rgba(28,85,214,.14);border-radius:20px;
  padding:44px 44px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,27px);margin-bottom:8px;}
.cta-band p{color:var(--muted);font-size:15px;max-width:620px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 文章卡 */
.posts-grid{margin-top:8px;}
.post-card{
  height:100%;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-base);
  transition:transform .22s ease,box-shadow .22s ease;display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.post-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--bg);}
.post-card__media img{width:100%;height:100%;object-fit:cover;}
.post-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post-card__body h3{font-size:18px;margin-bottom:10px;}
.post-card__body h3 a{color:var(--text);}
.post-card__body h3 a:hover{color:var(--brand-deep);}
.post-card__body p{font-size:14px;color:var(--muted);margin-bottom:18px;flex:1;}
.post-card__meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}
.empty-state{
  text-align:center;background:var(--surface);border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:56px 24px;
}
.empty-state i{font-size:30px;color:rgba(28,85,214,.35);margin-bottom:14px;display:block;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px;}

/* FAQ */
.faq-list .accordion{border:0;background:transparent;}
.faq-list .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:box-shadow .2s ease;
}
.faq-list .accordion-item.is-active{box-shadow:var(--shadow-base);}
.faq-list .accordion-title{
  border:0;font-size:18px;font-weight:600;color:var(--text);padding:20px 52px 20px 24px;position:relative;
}
.faq-list .accordion-title:hover{background:rgba(28,85,214,.04);color:var(--brand-deep);}
.faq-list .accordion-title::before{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  color:var(--muted);position:absolute;right:24px;top:50%;transform:translateY(-50%);
  border:0;margin:0;width:auto;height:auto;
}
.faq-list .accordion-item.is-active .accordion-title::before{content:"\f077";color:var(--brand);}
.faq-list .accordion-item.is-active .accordion-title::after{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--brand);border-radius:0 3px 3px 0;
}
.faq-list .accordion-content{
  border:0;padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--muted);background:var(--surface);
}

/* 信任数据 */
.stat-row{display:flex;gap:24px;flex-wrap:wrap;}
.stat-card{
  flex:1 1 200px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-base);
}
.stat-card .num{font-size:30px;font-weight:700;color:var(--brand-deep);display:block;line-height:1.2;}
.stat-card strong{display:block;font-size:15px;margin:10px 0 6px;}
.stat-card p{font-size:13px;color:var(--muted);}

/* 底部转化 */
.final-cta{
  background:var(--surface);border-top:1px solid var(--line);padding:72px 0;
}
.final-cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.final-cta h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.final-cta p{color:var(--muted);font-size:15px;max-width:640px;}

/* 页脚 */
.site-footer{background:#0E1A30;color:#B9C6DA;padding:64px 0 0;font-size:14px;}
.footer-grid{display:flex;gap:40px;flex-wrap:wrap;}
.footer-col{flex:1 1 220px;min-width:200px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8B9DB8;}
.footer-brand p{margin-top:16px;color:#93A4BE;font-size:13px;line-height:1.8;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#B9C6DA;}
.footer-links a:hover{color:#fff;}
.footer-note{font-size:13px;color:#8B9DB8;line-height:1.9;}
.footer-note strong{color:#DCE5F2;font-weight:600;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8295B1;
}
.footer-bottom a{color:#8295B1;}
.footer-bottom a:hover{color:#fff;}

@media screen and (max-width:1024px){
  :root{--space-section:64px;--gap:20px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm{display:none;}
  .hero-inner{padding:64px 0 56px;}
  .hero-grid{flex-direction:column;gap:36px;align-items:stretch;}
  .hero-copy{max-width:100%;}
  .zig-row{gap:34px;}
  .timeline-layout{flex-direction:column;gap:30px;}
  .cta-band{padding:36px 30px;}
}
@media screen and (max-width:768px){
  :root{--space-section:48px;--gap:16px;}
  .container{padding:0 20px;}
  .header-inner{height:64px;}
  .brand-text em{display:none;}
  .zig-row,.zig-row:nth-child(even){flex-direction:column;gap:22px;}
  .zigzag{gap:48px;}
  .reward-card{flex:0 0 82%;}
  .section-head{margin-bottom:30px;}
  .cta-band{padding:30px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .final-cta{padding:52px 0;}
  .final-cta-inner .btn{width:100%;}
  .footer-grid{gap:32px;}
  .footer-col{flex:1 1 45%;}
}
@media screen and (max-width:520px){
  .hero h1{font-size:27px;}
  .hero-lead{font-size:15px;}
  .stat-card{flex:1 1 100%;}
  .footer-col{flex:1 1 100%;}
  .post-card__body{padding:18px;}
  .faq-list .accordion-title{font-size:16px;padding:17px 46px 17px 18px;}
  .faq-list .accordion-content{padding:0 18px 18px;}
  .off-canvas{width:86%;}
}

/* roulang page: article */
:root{
  --brand:#1C55D6;
  --brand-deep:#143A9E;
  --accent:#F2A93B;
  --support:#12A594;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --text:#101B2E;
  --muted:#5C6B84;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(16,32,64,.04), 0 14px 34px -18px rgba(20,48,110,.18);
  --shadow-hover:0 22px 44px -20px rgba(20,48,110,.26);
  --space:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{line-height:1.28;margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.num{font-variant-numeric:tabular-nums}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(20,48,110,.45)}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;
  font-size:18px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px -10px rgba(28,85,214,.75);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.3px}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:500;
  color:var(--text);
  white-space:nowrap;
}
.nav-link:hover{background:var(--bg);color:var(--brand-deep)}
.nav-link.is-active{color:var(--brand-deep);font-weight:600}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.link-quiet{
  font-size:14px;
  color:var(--muted);
  padding:6px 4px;
  border-bottom:1px dashed var(--line);
}
.link-quiet:hover{color:var(--brand-deep);border-bottom-color:var(--brand)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:28px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:min(84vw,340px);
  height:100%;
  background:#fff;
  z-index:200;
  transform:translateX(102%);
  transition:transform .3s ease;
  padding:22px 22px 32px;
  display:flex;
  flex-direction:column;
  gap:8px;
  box-shadow:-18px 0 46px -24px rgba(20,48,110,.45);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--muted);
  display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{color:var(--brand-deep);border-color:var(--brand)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;
  border-radius:var(--radius-sm);
  font-size:15px;
  color:var(--text);
  background:var(--bg);
}
.drawer-link:hover{background:#E9EFFB;color:var(--brand-deep)}
.drawer-link.is-active{background:#E4ECFC;color:var(--brand-deep);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.9}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,27,46,.42);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:190;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
  white-space:nowrap;
}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -16px rgba(28,85,214,.9)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 20px 38px -18px rgba(20,48,110,.7)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:#EEF3FE;color:var(--brand-deep);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}

/* ============ Article head ============ */
.article-head{
  background:
    linear-gradient(180deg,rgba(245,247,251,.92) 0%,rgba(255,255,255,.98) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:34px 0 46px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#B6C1D4}
.breadcrumb .current{color:var(--text);font-weight:500}
.article-head h1{
  font-size:clamp(28px,4vw,44px);
  max-width:900px;
  margin-bottom:20px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:14px;color:var(--muted);
}
.badge{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.3px;
}
.badge-cat{background:rgba(18,165,148,.12);color:#0C7A6E}
.badge-accent{background:rgba(242,169,59,.18);color:#8A5A10}
.dot-sep{width:4px;height:4px;border-radius:50%;background:#C6D0E0;display:inline-block}

/* ============ Article body ============ */
.article-section{padding:56px 0 24px}
.article-shell{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:clamp(22px,3.4vw,52px);
}
.reading-column{max-width:760px;margin:0 auto}
.article-body{font-size:17px;line-height:1.9;color:#16223A;word-wrap:break-word}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  margin:40px 0 16px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em;line-height:1.8}
.article-body li{margin-bottom:.4em}
.article-body blockquote{
  background:var(--bg);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:16px 20px;
  margin:24px 0;
  color:var(--muted);
  font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-sm);margin:24px auto}
.article-body a{font-weight:500;border-bottom:1px solid rgba(28,85,214,.35)}
.article-body a:hover{border-bottom-color:var(--brand-deep)}
.article-body table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;white-space:nowrap}
.article-body th{background:var(--bg);font-weight:600}
.article-body code{background:var(--bg);border-radius:6px;padding:2px 6px;font-size:15px}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}
.empty-state{
  text-align:center;
  padding:52px 20px;
  border:1px dashed var(--line);
  border-radius:var(--radius);
  background:var(--bg);
}
.empty-state i{font-size:34px;color:#B6C1D4;margin-bottom:14px;display:block}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* ============ Related ============ */
.related-section{padding:8px 0 var(--space)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-bottom:26px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px)}
.section-head p{color:var(--muted);font-size:15px;margin-top:8px;max-width:640px}
.text-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--brand)}
.text-link:hover{color:var(--brand-deep)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3DEF2}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.45}
.card-body h3 a{color:var(--text)}
.card-body h3 a:hover{color:var(--brand-deep)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.7}
.card-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);
}
.related-empty{
  border:1px dashed var(--line);border-radius:var(--radius);background:#fff;
  padding:30px;text-align:center;color:var(--muted);font-size:15px;
}

/* ============ CTA ============ */
.cta-band{
  background:linear-gradient(120deg,#EAF1FF 0%,#F6F9FF 55%,#FFF6E9 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:44px 0;
}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-inner p{color:var(--muted);font-size:15px;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ Footer ============ */
.footer-wave{display:block;width:100%;height:44px;color:#fff;margin-bottom:-1px}
.site-footer{background:#fff;border-top:1px solid var(--line);padding:0 0 26px}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.2fr 1.2fr;
  gap:36px;
  padding:48px 0 34px;
}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85}
.footer-links{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--brand-deep)}
.footer-note{font-size:14px;color:var(--muted);line-height:2}
.footer-note strong{color:var(--text)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ Responsive ============ */
@media screen and (max-width:1024px){
  :root{--space:64px}
  .container{padding-left:24px;padding-right:24px}
  .main-nav{gap:2px}
  .nav-link{padding:0 10px;font-size:14px}
  .header-actions .link-quiet{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media screen and (max-width:768px){
  :root{--space:48px}
  .container{padding-left:20px;padding-right:20px}
  .header-inner{height:62px;gap:12px}
  .main-nav,.header-actions{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .brand-text em{display:none}
  .article-head{padding:24px 0 34px}
  .article-section{padding:32px 0 16px}
  .article-shell{padding:20px 16px;border-radius:14px}
  .reading-column{max-width:100%}
  .article-body{font-size:16px;line-height:1.85}
  .section-head{flex-direction:column;align-items:flex-start}
  .cta-inner{padding:36px 0;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto;justify-content:center}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;padding:36px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .mobile-drawer{width:min(88vw,320px)}
}
@media screen and (max-width:520px){
  .brand-text strong{font-size:15px}
  .badge{height:24px;font-size:11px;padding:0 10px}
  .meta-row{font-size:13px;gap:10px}
  .article-body table{font-size:14px}
}

/* roulang page: category1 */
:root{
  --brand:#1C55D6;
  --brand-deep:#143A9E;
  --brand-soft:rgba(28,85,214,.08);
  --brand-line:rgba(28,85,214,.28);
  --accent:#F2A93B;
  --support:#12A594;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --text:#101B2E;
  --muted:#5C6B84;
  --radius-card:16px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.04);
  --shadow:0 1px 2px rgba(16,32,64,.04), 0 14px 34px -18px rgba(20,48,110,.18);
  --shadow-hover:0 22px 44px -20px rgba(20,48,110,.26);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{line-height:1.28;margin:0;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(28px,4vw,44px)}
h2{font-size:clamp(22px,2.6vw,32px)}
h3{font-size:20px}
h4{font-size:17px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
img{max-width:100%;display:block}
a{color:var(--brand-deep);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -14px rgba(28,85,214,.85)}
.btn-primary:hover{background:#1949C0;color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(28,85,214,.95)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -12px rgba(28,85,214,.9)}
.btn-outline{background:var(--surface);color:var(--brand-deep);border-color:var(--brand-line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{display:flex;width:100%}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-support{background:rgba(18,165,148,.12);color:#0B6E63}
.badge-accent{background:rgba(242,169,59,.2);color:#8A5A0B}
.badge-brand{background:var(--brand-soft);color:var(--brand-deep)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(16,32,64,.42)}
.header-inner{display:flex;align-items:center;gap:24px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:17px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;color:var(--text);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand-deep);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-deep);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  flex-direction:column;gap:4px;transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}
.nav-toggle-bar{display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(16,27,46,.44);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:min(330px,86vw);
  background:var(--surface);padding:22px;overflow-y:auto;
  transform:translateX(102%);transition:transform .28s cubic-bezier(.4,0,.2,1);
  box-shadow:-24px 0 50px -28px rgba(16,32,64,.45);
  display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0)}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:15px;font-weight:700;color:var(--text)}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  font-size:20px;line-height:1;color:var(--muted);display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand-deep)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-link{
  padding:13px 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text);
  border:1px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-link.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:700;border-color:var(--brand-line)}
.drawer-note{margin:0;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-white{background:var(--surface)}
.section-alt{background:var(--bg)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{margin:12px 0 14px}
.section-head p{color:var(--muted);font-size:16px}
.section-head-center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- 页头 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:#EEF3FC url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.page-hero-bg{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(245,247,251,.96) 0%,rgba(245,247,251,.88) 48%,rgba(233,241,254,.74) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding-top:56px;padding-bottom:52px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#A8B3C7}
.breadcrumb .current{color:var(--text);font-weight:600}
.page-hero h1{max-width:820px;color:var(--text)}
.page-hero-sub{max-width:660px;margin:16px 0 26px;font-size:17px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 步骤卡 ---------- */
.step-grid{margin-bottom:34px}
.step-grid > .cell{display:flex;margin-bottom:24px}
.step-card{
  display:flex;flex-direction:column;width:100%;padding:26px 24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line)}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;margin-bottom:16px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{font-size:15px;color:var(--muted);line-height:1.75}

/* ---------- 进度条 ---------- */
.progress-box{
  padding:24px 26px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
}
.progress-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.progress-head strong{font-size:15px}
.progress-head span{font-size:13px;color:var(--muted)}
.progress-track{height:6px;border-radius:999px;background:var(--line);overflow:hidden}
.progress-track > span{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--brand),var(--support));
  transition:width .6s ease;
}

/* ---------- 图文两栏 ---------- */
.zigzag + .zigzag{margin-top:56px}
.zigzag-media{margin-bottom:24px}
.feature-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-card);box-shadow:var(--shadow);
}
.feature-text h3{margin:14px 0 12px}
.feature-text > p{color:var(--muted)}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.check-list li{
  position:relative;padding-left:28px;font-size:15px;color:var(--text);
}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  width:19px;height:19px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,165,148,.14);color:#0B6E63;font-size:12px;font-weight:700;
  line-height:19px;text-align:center;
}
.zigzag-text{padding-top:4px}

/* ---------- 自检清单 ---------- */
.check-item{
  padding:20px 22px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.check-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.check-head strong{font-size:15px}
.check-item p{font-size:14px;color:var(--muted);margin:12px 0 0}
.bar{height:6px;border-radius:999px;background:var(--line);overflow:hidden}
.bar > span{display:block;height:100%;border-radius:999px;background:var(--support)}
.bar > span.is-warn{background:var(--accent)}
.bar > span.is-brand{background:var(--brand)}

/* ---------- 窄条入口卡 ---------- */
.entry-list{display:flex;flex-direction:column;gap:14px}
.entry-row{
  display:flex;align-items:center;gap:16px;
  padding:18px 22px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--brand-line);color:inherit}
.entry-no{
  flex-shrink:0;width:34px;height:34px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.entry-body{display:flex;flex-direction:column;gap:2px;min-width:0}
.entry-body strong{font-size:16px;color:var(--text)}
.entry-body em{font-style:normal;font-size:14px;color:var(--muted)}
.entry-arrow{margin-left:auto;flex-shrink:0;color:var(--brand);font-size:18px;font-weight:700}

/* ---------- FAQ ---------- */
.accordion{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);overflow:hidden;box-shadow:var(--shadow-sm);
  margin:0;
}
.accordion .accordion-item{border-bottom:1px solid var(--line);background:var(--surface)}
.accordion .accordion-item:last-child{border-bottom:0}
.accordion .accordion-title{
  display:block;position:relative;padding:20px 56px 20px 26px;
  font-size:18px;font-weight:600;color:var(--text);
  border:0;background:transparent;transition:color .18s ease,background-color .18s ease;
}
.accordion .accordion-title:hover{background:var(--brand-soft);color:var(--brand-deep)}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand);line-height:1;
}
.accordion .accordion-item.is-active .accordion-title{color:var(--brand-deep)}
.accordion .accordion-item.is-active .accordion-title::before{content:"–"}
.accordion .accordion-item.is-active .accordion-title::after{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.accordion .accordion-content{
  padding:0 26px 22px;border:0;background:var(--surface);
  font-size:15px;line-height:1.8;color:var(--muted);
}
.accordion .accordion-content p{margin:0;color:var(--muted)}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:38px 40px;border-radius:24px;border:1px solid #DCE7FB;
  background:linear-gradient(100deg,#EAF0FE 0%,#F4F8FF 52%,#EAF7F5 100%);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.cta-band p{color:var(--muted);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1E3C;color:#B9C6DE;padding:72px 0 0;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:48px;
}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:#8FA2C4}
.footer-brand .brand-mark{background:linear-gradient(135deg,#2A6BF0,#143A9E)}
.footer-brand p{font-size:14px;color:#9FB0CF;line-height:1.8;max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#B9C6DE}
.footer-links a:hover{color:#fff}
.footer-note{font-size:14px;color:#9FB0CF;line-height:1.9;margin:0}
.footer-note strong{color:#fff;font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8FA2C4;flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 28px}
  .section{padding:64px 0}
  .main-nav{display:none}
  .header-actions{display:none}
  .nav-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero-inner{padding-top:46px;padding-bottom:44px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .page-hero-sub{font-size:16px}
  .zigzag + .zigzag{margin-top:40px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .entry-row{padding:16px 18px;align-items:flex-start}
  .accordion .accordion-title{font-size:16px;padding:18px 48px 18px 20px}
  .accordion .accordion-content{padding:0 20px 20px}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .check-head{flex-direction:column;align-items:flex-start;gap:6px}
  .progress-head{flex-direction:column;align-items:flex-start;gap:4px}
}
@media (min-width:1025px){
  .zigzag.is-reverse .zigzag-media{order:2}
  .zigzag.is-reverse .zigzag-text{order:1}
  .zigzag-media{margin-bottom:0}
  .zigzag-text{padding:0 8px}
}

/* roulang page: category2 */
:root{
  --brand:#1C55D6;
  --brand-deep:#143A9E;
  --brand-soft:rgba(28,85,214,.08);
  --accent:#F2A93B;
  --accent-soft:rgba(242,169,59,.16);
  --support:#12A594;
  --support-soft:rgba(18,165,148,.12);
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --text:#101B2E;
  --muted:#5C6B84;
  --radius-card:16px;
  --radius-pill:999px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,32,64,.04), 0 14px 34px -18px rgba(20,48,110,.18);
  --shadow-2:0 1px 2px rgba(16,32,64,.05), 0 22px 44px -20px rgba(20,48,110,.26);
  --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(20,48,110,.45)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;
  box-shadow:0 10px 20px -14px rgba(28,85,214,.9);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15.5px;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.4px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;height:38px;padding:0 13px;
  border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:500;color:#33415C;
  transition:background-color .2s ease,color .2s ease;
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand-deep);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand-deep);
}
.nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0}
.link-quiet{
  font-size:14px;color:var(--muted);
  border-bottom:1px dashed var(--line);padding-bottom:2px;
}
.link-quiet:hover{color:var(--brand-deep);border-color:var(--brand)}
.nav-toggle{
  display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:4px;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}
.nav-toggle span{width:18px;height:2px;border-radius:2px;background:var(--text);display:block}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -16px rgba(28,85,214,.9)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 20px 40px -22px rgba(20,48,110,.7)}
.btn-secondary{background:var(--surface);color:var(--brand-deep);border-color:var(--brand)}
.btn-secondary:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px)}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sm{height:38px;padding:0 18px;font-size:14px}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;top:0;right:-360px;width:330px;max-width:88vw;height:100%;
  background:var(--surface);z-index:95;padding:22px 22px 32px;overflow-y:auto;
  box-shadow:-24px 0 48px -34px rgba(16,32,64,.55);
  transition:right .3s cubic-bezier(.4,0,.2,1);
}
.mobile-drawer.is-open{right:0}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  cursor:pointer;font-size:18px;line-height:1;color:var(--muted);
  transition:border-color .2s ease,color .2s ease;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand-deep)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin:6px 0 22px}
.drawer-nav a{
  display:block;padding:13px 14px;border-radius:12px;font-size:15px;color:#33415C;font-weight:500;
  transition:background-color .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.drawer-cta .btn{width:100%}
.drawer-meta{border-top:1px solid var(--line);padding-top:18px;font-size:13px;color:var(--muted);line-height:1.9}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,27,46,.42);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  display:flex;align-items:center;
  min-height:240px;
  background-image:linear-gradient(100deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.84) 54%,rgba(240,245,252,.88) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero .container{padding-top:36px;padding-bottom:38px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-bottom:14px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#A9B6CB}
.breadcrumb .current{color:#33415C;font-weight:600}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  letter-spacing:-.5px;
  max-width:840px;
}
.page-hero .lead{
  margin-top:14px;max-width:740px;
  font-size:17px;color:var(--muted);line-height:1.8;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0}
.section--surface{background:var(--surface)}
.section--bg{background:var(--bg)}
.section--top-tight{padding-top:60px}
.section-head{max-width:780px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.6px;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:var(--radius-pill);
  padding:6px 15px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);letter-spacing:-.3px}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;flex-wrap:wrap;
}
.section-head--row .more-link{font-size:14px;font-weight:600;color:var(--brand-deep);white-space:nowrap}
.section-head--row .more-link:hover{color:var(--brand)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;
  border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.2px;white-space:nowrap;
}
.badge-support{background:var(--support-soft);color:#0B7A6D}
.badge-accent{background:var(--accent-soft);color:#96610E}
.badge-brand{background:var(--brand-soft);color:var(--brand-deep)}

/* ---------- 筛选标签行 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.filter-chip{
  height:36px;padding:0 18px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--muted);
  font-size:14px;font-weight:500;cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.filter-chip.is-active{
  background:var(--brand);border-color:var(--brand);color:#fff;
  box-shadow:0 12px 24px -16px rgba(28,85,214,.95);
}
.filter-hint{font-size:13px;color:var(--muted);margin-bottom:22px}

/* ---------- 奖励条目卡 ---------- */
.reward-list{display:grid;gap:16px}
.reward-item{
  display:flex;align-items:center;gap:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px 24px 16px 16px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.reward-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6DFEE}
.reward-item.is-hidden{display:none}
.reward-thumb{
  width:136px;height:84px;flex:0 0 auto;border-radius:12px;overflow:hidden;background:var(--bg);
}
.reward-thumb img{width:100%;height:100%;object-fit:cover}
.reward-body{flex:1 1 auto;min-width:0}
.reward-body h3{font-size:18px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.reward-body p{margin-top:7px;font-size:14px;color:var(--muted)}
.reward-value{
  flex:0 0 auto;display:flex;flex-direction:column;align-items:flex-end;gap:8px;text-align:right;
}
.reward-num{
  font-size:22px;font-weight:700;color:var(--brand-deep);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.reward-num small{font-size:12.5px;font-weight:600;color:var(--muted);margin-left:5px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 22px 24px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.step-num{
  width:34px;height:34px;border-radius:50%;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:17px}
.step p{margin-top:8px;font-size:14px;color:var(--muted)}
.step.is-current .step-num{background:var(--surface);border:2px solid var(--accent);color:#96610E}
.progress-block{margin-top:34px;max-width:760px}
.progress-track{height:6px;border-radius:var(--radius-pill);background:#E6ECF6;overflow:hidden}
.progress-bar{
  height:100%;width:0;border-radius:inherit;
  background:linear-gradient(90deg,var(--brand),var(--support));
  transition:width 1s ease;
}
.progress-caption{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-top:10px;
}

/* ---------- 图文两栏 ---------- */
.split{display:grid;grid-template-columns:1.02fr 1fr;gap:52px;align-items:center}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.split-copy h2{font-size:clamp(22px,2.6vw,32px);letter-spacing:-.3px}
.split-copy > p{margin-top:14px;color:var(--muted)}
.check-list{margin-top:24px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--muted);
}
.check-list li:last-child{border-bottom:none}
.check-list .tick{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  background:var(--support-soft);color:#0B7A6D;
  display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:2px;
}
.check-list strong{color:var(--text);font-weight:600}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:0}
.faq .accordion{background:transparent;border:none;margin:0}
.faq .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;box-shadow:var(--shadow-1);overflow:hidden;
}
.faq .accordion-title{
  position:relative;display:block;
  padding:20px 58px 20px 26px;
  font-size:18px;font-weight:600;color:var(--text);
  background:transparent;border:none;line-height:1.5;
  transition:background-color .2s ease,color .2s ease;
}
.faq .accordion-title:hover{background:#FAFBFE;color:var(--brand-deep)}
.faq .accordion-item.is-active .accordion-title{color:var(--brand-deep)}
.faq .accordion-item.is-active .accordion-title::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.faq .accordion-title::after{
  content:"+";position:absolute;right:26px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand);line-height:1;
}
.faq .accordion-item.is-active .accordion-title::after{content:"−"}
.faq .accordion-content{
  padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--muted);
  background:transparent;border:none;
}
.faq-aside{
  margin-top:22px;background:var(--bg);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 26px;
}
.faq-aside h3{font-size:17px}
.faq-aside p{margin-top:10px;font-size:14.5px;color:var(--muted)}
.faq-aside .quick-links{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.faq-aside .quick-links a{font-size:14.5px;font-weight:600}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(120deg,#EAF1FF 0%,#F3F8FF 56%,#E9F7F5 100%);
  border:1px solid #DCE7FA;border-radius:24px;
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);letter-spacing:-.3px}
.cta-band p{margin-top:10px;color:var(--muted);max-width:640px}
.cta-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#F0F4FA;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.25fr 1.1fr;gap:40px;
  padding-bottom:44px;
}
.footer-col h4{font-size:16px;margin-bottom:16px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.85}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--brand-deep)}
.footer-note{font-size:14px;color:var(--muted);line-height:1.95}
.footer-note strong{color:var(--text)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--section-y:64px}
  .main-nav,.nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:34px}
  .split-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:34px 30px}
}
@media (max-width:768px){
  :root{--section-y:48px}
  .container{padding:0 20px}
  .page-hero .container{padding-top:28px;padding-bottom:30px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .page-hero .lead{font-size:15.5px}
  .reward-item{flex-direction:column;align-items:stretch;padding:16px}
  .reward-thumb{width:100%;height:168px}
  .reward-value{flex-direction:row;align-items:center;justify-content:space-between;text-align:left}
  .steps{grid-template-columns:1fr}
  .cta-band{border-radius:18px;padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .brand-text strong{font-size:14.5px}
  .brand-text em{display:none}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .section-head--row{align-items:flex-start}
  .reward-num{font-size:19px}
  .faq .accordion-title{font-size:16px;padding:17px 50px 17px 20px}
  .faq .accordion-content{padding:0 20px 18px}
}

/* roulang page: category3 */
:root{
  --brand:#1C55D6;
  --brand-deep:#143A9E;
  --accent:#F2A93B;
  --support:#12A594;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --line:#E3E9F2;
  --text:#101B2E;
  --muted:#5C6B84;
  --radius-card:16px;
  --radius-btn:999px;
  --radius-input:10px;
  --shadow-base:0 1px 2px rgba(16,32,64,.04), 0 14px 34px -18px rgba(20,48,110,.18);
  --shadow-hover:0 22px 44px -20px rgba(20,48,110,.26);
  --container:1180px;
  --gap:24px;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-radius:12px;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{line-height:1.28;margin:0;color:var(--text);font-weight:700;}
h1{font-size:clamp(26px,3.4vw,40px);letter-spacing:-.01em;}
h2{font-size:clamp(22px,2.6vw,32px);}
h3{font-size:20px;}
h4{font-size:17px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 18px;border-radius:0 0 12px 0;z-index:200;}
.skip-link:focus{left:0;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sec) 0;}
.section-tight{padding:56px 0;}
.section-bg{background:var(--surface);}
.section-alt{background:var(--bg);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(28,85,214,.08);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}

/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(20,48,110,.45);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:15px;color:var(--text);letter-spacing:-.01em;white-space:nowrap;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);white-space:nowrap;}
.main-nav{display:flex;align-items:center;margin-left:auto;}
.nav-link{
  position:relative;
  padding:22px 0;
  margin:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:14px;
  height:2px;border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);}
.nav-toggle:hover{border-color:var(--brand);background:#F4F7FF;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -18px rgba(28,85,214,.9);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:#EFF4FF;color:var(--brand-deep);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}

/* 徽章与标签 */
.badge{
  display:inline-flex;
  align-items:center;
  height:25px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-support{background:rgba(18,165,148,.12);color:#0B7A6D;}
.badge-accent{background:rgba(242,169,59,.18);color:#8A5A0B;}
.badge-brand{background:rgba(28,85,214,.1);color:var(--brand-deep);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* 页头 */
.page-hero{
  position:relative;
  min-height:240px;
  display:flex;
  align-items:center;
  background-image:linear-gradient(100deg,rgba(245,247,251,.95),rgba(245,247,251,.7)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero-inner{padding:52px 0;max-width:820px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb .sep{color:#B7C2D6;}
.breadcrumb .current{color:var(--text);font-weight:600;}
.page-hero h1{margin-bottom:16px;}
.page-hero .lede{font-size:17px;color:var(--muted);max-width:700px;}
.page-hero .tag-row{margin-bottom:20px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* 步骤 */
.steps-3{margin-top:8px;}
.step-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 24px 26px;
  box-shadow:var(--shadow-base);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3DEF2;}
.step-node{
  width:28px;height:28px;border-radius:50%;
  background:var(--brand);color:#fff;
  font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step-card.is-pending .step-node{background:#fff;border:2px solid var(--accent);color:#8A5A0B;}
.step-card h3{margin-bottom:10px;}
.step-card p{font-size:15px;color:var(--muted);}
.step-index{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.progress-wrap{margin-top:40px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-base);}
.progress-top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px;font-size:14px;color:var(--muted);}
.progress-top strong{color:var(--text);font-variant-numeric:tabular-nums;}
.progress-bar{height:6px;border-radius:999px;background:#E8EEF9;overflow:hidden;}
.progress-bar span{display:block;height:100%;width:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--support));}

/* FAQ 布局 */
.faq-layout{align-items:flex-start;}
.faq-main{min-width:0;}
.faq-group{margin-bottom:36px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-title{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.faq-group-title span.badge{flex:0 0 auto;}
.accordion{
  background:transparent;
  border:0;
  list-style:none;
  margin:0;
}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.accordion-item:hover{border-color:#D3DEF2;box-shadow:var(--shadow-base);}
.accordion-title{
  position:relative;
  display:block;
  padding:18px 56px 18px 20px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  border:0;
  background:transparent;
  box-shadow:none;
  transition:background-color .2s ease,color .2s ease;
}
.accordion-title::before{display:none;}
.accordion-title::after{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--brand);
  line-height:1;
  transition:color .2s ease;
}
.accordion-title:hover{background:#F6F9FF;color:var(--brand-deep);}
.accordion-item.is-active{border-color:#CBD9F5;box-shadow:var(--shadow-base);}
.accordion-item.is-active .accordion-title{background:#F6F9FF;color:var(--brand-deep);box-shadow:inset 3px 0 0 var(--brand);}
.accordion-item.is-active .accordion-title::after{content:"−";color:var(--brand-deep);}
.accordion-content{
  display:none;
  padding:0 20px 20px;
  border:0;
  background:var(--surface);
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
}
.accordion-item.is-active .accordion-content{display:block;}
.accordion-content p{margin:0 0 10px;}
.accordion-content p:last-child{margin-bottom:0;}
.accordion-content strong{color:var(--text);}

/* 侧栏 */
.side-col{min-width:0;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-base);
  margin-bottom:20px;
}
.side-card h4{margin-bottom:6px;}
.side-card .side-sub{font-size:13px;color:var(--muted);margin-bottom:16px;}
.side-sticky{position:sticky;top:92px;}
.entry-item{
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#FBFCFE;
  margin-bottom:10px;
  transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.entry-item:last-child{margin-bottom:0;}
.entry-item:hover{border-color:var(--brand);background:#F2F6FF;transform:translateX(2px);}
.entry-num{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:10px;
  background:rgba(28,85,214,.1);
  color:var(--brand-deep);
  font-size:13px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.entry-body{min-width:0;flex:1 1 auto;}
.entry-body strong{display:block;font-size:15px;color:var(--text);}
.entry-body em{font-style:normal;display:block;font-size:13px;color:var(--muted);}
.entry-arrow{flex:0 0 auto;color:var(--brand);font-size:16px;}
.info-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--muted);
  padding:9px 0;
  border-bottom:1px dashed var(--line);
}
.info-list li:last-child{border-bottom:0;}
.info-list li::before{
  content:"";
  flex:0 0 auto;
  width:6px;height:6px;
  margin-top:9px;
  border-radius:50%;
  background:var(--support);
}

/* 数据块 */
.stat-grid{margin-top:8px;}
.stat-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-base);
  transition:transform .22s ease,box-shadow .22s ease;
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.stat-num{
  font-size:clamp(28px,3vw,36px);
  font-weight:700;
  color:var(--brand-deep);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  margin-bottom:8px;
}
.stat-card .stat-label{font-size:15px;font-weight:600;margin-bottom:6px;}
.stat-card p{font-size:14px;color:var(--muted);}
.stat-note{
  margin-top:28px;
  font-size:15px;
  color:var(--muted);
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--accent);
  border-radius:12px;
  padding:18px 20px;
}

/* CTA */
.cta-band{
  background:linear-gradient(100deg,#EAF0FE,#F4F8FF 62%,#EEF4FF);
  border:1px solid #DCE6FA;
  border-radius:20px;
  padding:34px 36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{color:var(--muted);font-size:15px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* 页脚 */
.site-footer{background:#0F1C33;color:#C6D2E6;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.2fr;gap:32px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.8;color:#A9B7CE;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8FA1BE;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#3A74E8,#1C55D6);}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:#A9B7CE;font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-note strong{color:#fff;}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  font-size:13px;
  color:#8FA1BE;
}

/* 抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(16,27,46,.45);
  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;right:0;
  width:min(86vw,360px);
  height:100%;
  background:#fff;
  transform:translateX(105%);
  transition:transform .3s ease;
  z-index:80;
  display:flex;
  flex-direction:column;
  padding:20px 22px 26px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px;}
.drawer-close{
  width:40px;height:40px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:12px;
  cursor:pointer;
  font-size:18px;
  color:var(--muted);
  line-height:1;
  transition:border-color .2s ease,color .2s ease;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand-deep);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  padding:13px 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--text);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:#F4F7FF;color:var(--brand-deep);}
.drawer-nav a.is-active{background:#EFF4FF;color:var(--brand-deep);font-weight:600;border-color:#D8E3FB;}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-bottom:22px;}
.drawer-foot{border-top:1px solid var(--line);padding-top:16px;font-size:13px;color:var(--muted);}
.drawer-foot strong{color:var(--text);}
.hide-sm{display:inline-flex;}

/* 响应式 */
@media screen and (max-width:1024px){
  :root{--sec:64px;}
  .container{padding:0 28px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-actions{margin-left:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .side-sticky{position:static;}
}
@media screen and (max-width:768px){
  :root{--sec:48px;--gap:16px;}
  .container{padding:0 20px;}
  .hide-sm{display:none;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:14px;}
  .page-hero{min-height:200px;}
  .page-hero-inner{padding:40px 0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left;}
  .accordion-title{font-size:16px;padding:16px 50px 16px 16px;}
  .accordion-title::after{right:16px;}
  .accordion-content{padding:0 16px 18px;}
  .step-card{padding:22px 20px;}
}
@media screen and (max-width:520px){
  .brand-text strong{font-size:13px;}
  .header-actions .btn-sm{padding:0 14px;font-size:13px;height:38px;}
  .hero-actions .btn{width:100%;}
  .stat-num{font-size:26px;}
  .side-card{padding:18px;}
}