/* roulang page: index */
:root{
  --ink-900:#101318;
  --ink-800:#171B21;
  --ink-700:#1F242C;
  --line-dark:rgba(255,255,255,.10);
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line-light:#E6E4DF;
  --primary:#FF5A1F;
  --primary-600:#E44A12;
  --primary-50:rgba(255,90,31,.10);
  --primary-100:rgba(255,90,31,.18);
  --teal:#14C2A3;
  --teal-50:rgba(20,194,163,.12);
  --amber:#FFC53D;
  --text-1:#14171C;
  --text-2:#4B525C;
  --text-3:#7A828C;
  --err:#E5484D;
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(16,19,24,.06),0 12px 28px -18px rgba(16,19,24,.28);
  --shadow-hover:0 4px 8px rgba(16,19,24,.08),0 20px 40px -22px rgba(16,19,24,.34);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:Inter,"PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border-radius:var(--radius);object-fit:cover;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
strong{font-weight:700;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary);
  font-family:var(--font-num);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--primary);border-radius:2px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:36px;
}
.section-title{
  font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;
  margin-top:10px;color:var(--text-1);
}
.section-sub{margin-top:12px;color:var(--text-2);font-size:15px;max-width:62ch;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn svg{flex:0 0 auto;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px -14px rgba(255,90,31,.85);}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-primary:focus-visible{outline:3px solid var(--primary-100);outline-offset:2px;}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-50);}
.btn-ghost:active{transform:translateY(1px);}
.btn-ghost:focus-visible{outline:3px solid var(--primary-100);outline-offset:2px;}
.btn-dark-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff;}
.btn-dark-ghost:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);}
.btn-dark-ghost:focus-visible{outline:3px solid rgba(255,255,255,.24);outline-offset:2px;}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:15px;font-weight:600;
}
.link-more svg{transition:transform .18s ease;}
.link-more:hover{text-decoration:underline;text-underline-offset:3px;}
.link-more:hover svg{transform:translateX(2px);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-900);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:rgba(16,19,24,.94);
  backdrop-filter:blur(8px) saturate(140%);
  border-bottom-color:var(--line-dark);
}
.brand-row{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-600));
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:3px;padding:8px;
}
.brand-mark span{background:rgba(255,255,255,.9);border-radius:1.5px;}
.brand-mark span:nth-child(2),
.brand-mark span:nth-child(4),
.brand-mark span:nth-child(8){background:rgba(255,255,255,.42);}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-text b{
  color:#fff;font-size:17px;font-weight:700;line-height:1.3;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.brand-text small{
  color:rgba(255,255,255,.45);font-size:12px;line-height:1.4;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.brand-actions{display:flex;align-items:center;gap:10px;}
.quick-link{
  color:rgba(255,255,255,.68);font-size:14px;padding:8px 10px;border-radius:8px;
  transition:color .18s ease,background .18s ease;
}
.quick-link:hover{color:#fff;background:rgba(255,255,255,.06);}
.quick-link.is-active{color:var(--primary);}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-dark);
  display:inline-flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);transition:color .18s ease,border-color .18s ease;
}
.icon-btn:hover{color:#fff;border-color:rgba(255,255,255,.3);}
.icon-btn:focus-visible{outline:3px solid rgba(255,255,255,.2);outline-offset:2px;}
.hamburger{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line-dark);color:#fff;
  align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
.hamburger span::before,
.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

.channel-row-wrap{border-top:1px solid var(--line-dark);}
.channel-row{
  display:flex;align-items:center;gap:6px;
  padding:8px 24px;overflow-x:auto;scrollbar-width:none;
}
.channel-row::-webkit-scrollbar{display:none;}
.channel{
  position:relative;flex:0 0 auto;
  color:rgba(255,255,255,.68);font-size:14px;font-weight:500;
  padding:8px 14px;border-radius:999px;
  transition:color .18s ease,background .18s ease;
}
.channel:hover{color:#fff;background:rgba(255,255,255,.06);}
.channel.is-active{color:var(--primary);background:var(--primary-50);}
.channel.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}

/* 移动端抽屉 */
.overlay{
  position:fixed;inset:0;background:rgba(16,19,24,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:90;
}
.overlay.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:80%;max-width:340px;z-index:100;
  background:var(--paper);padding:22px;overflow-y:auto;
  transform:translateX(102%);transition:transform .24s ease;
  display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head b{font-size:16px;color:var(--text-1);}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line-light);display:flex;align-items:center;justify-content:center;color:var(--text-2);}
.drawer-group{display:flex;flex-direction:column;gap:2px;}
.drawer-group h4{font-size:12px;color:var(--text-3);font-weight:600;padding:6px 8px;}
.drawer-group a{
  padding:11px 10px;border-radius:10px;font-size:15px;color:var(--text-1);
  transition:background .18s ease,color .18s ease;
}
.drawer-group a:hover{background:var(--paper-2);}
.drawer-group a.is-active{color:var(--primary);background:var(--primary-50);font-weight:600;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}

/* ============ Hero ============ */
.hero{
  position:relative;background:var(--ink-900);color:#fff;overflow:hidden;
  padding:76px 0 104px;
}
.hero::before{
  content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;
  background:radial-gradient(circle at center,rgba(255,90,31,.20),transparent 66%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:40px;
  background:linear-gradient(180deg,rgba(246,245,242,0),var(--paper));
  pointer-events:none;z-index:2;
}
.hero-grid{
  position:relative;z-index:3;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--teal-50);color:var(--teal);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:block;}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.4vw,46px);font-weight:700;line-height:1.25;letter-spacing:0;
  color:#fff;
}
.hero-sub{
  margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.68);max-width:56ch;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px;
  padding-top:24px;border-top:1px solid var(--line-dark);
}
.hero-trust li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.68);
}
.hero-trust svg{color:var(--teal);flex:0 0 auto;}
.hero-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);
}
.hero-figure::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:linear-gradient(90deg,rgba(16,19,24,.62),rgba(16,19,24,.08) 58%,rgba(16,19,24,0));
}
.hero-figure figcaption{
  position:absolute;left:20px;bottom:18px;z-index:2;
  font-size:13px;color:rgba(255,255,255,.82);
  background:rgba(16,19,24,.5);border:1px solid var(--line-dark);
  padding:6px 12px;border-radius:999px;
}

/* ============ 三步 ============ */
.steps{display:flex;align-items:flex-start;margin-top:44px;}
.step{flex:1;min-width:0;}
.step-num{
  width:32px;height:32px;border-radius:6px;
  border:1px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;
  background:var(--primary-50);
}
.step h3{margin-top:18px;font-size:20px;font-weight:600;line-height:1.5;color:var(--text-1);}
.step p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:30ch;}
.step-link{
  flex:0 0 62px;height:1px;border-top:1px dashed var(--line-light);
  margin-top:16px;position:relative;
}
.step-link::after{
  content:"";position:absolute;left:50%;top:-4px;width:8px;height:8px;border-radius:50%;
  background:var(--amber);transform:translateX(-50%);
}
.steps-foot{margin-top:40px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}

/* ============ 案例 ============ */
.case{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.case + .case{margin-top:56px;}
.case-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.case-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);}
.case.reverse .case-media{order:2;}
.badge{
  display:inline-flex;align-items:center;
  background:var(--teal-50);color:#0E8E79;
  font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;
}
.case h3{margin-top:14px;font-size:20px;font-weight:600;line-height:1.5;}
.case p{margin-top:10px;color:var(--text-2);font-size:15px;}
.case-points{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.case-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-2);}
.case-points svg{color:var(--primary);flex:0 0 auto;margin-top:6px;}

.stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:64px;padding-top:32px;border-top:1px solid var(--line-light);
}
.stat{padding-right:28px;}
.stat + .stat{border-left:1px solid var(--line-light);padding-left:32px;}
.stat b{
  display:block;font-family:var(--font-num);font-size:28px;font-weight:700;line-height:1.2;
  color:var(--primary);
}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--text-3);}

/* ============ 资讯区 ============ */
.news{background:var(--paper-2);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius);
  overflow:hidden;transition:transform .18s ease,box-shadow .18s ease;height:100%;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.post-link{display:flex;flex-direction:column;height:100%;}
.post-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper);}
.post-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-badge{
  position:absolute;left:12px;top:12px;
  background:var(--primary);color:#fff;font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:6px;line-height:1.5;max-width:70%;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.post-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-title{
  font-size:17px;font-weight:600;line-height:1.55;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line-light);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);font-family:var(--font-num);
}
.post-meta .meta-arrow{color:var(--primary);font-size:15px;transition:transform .18s ease;}
.post-card:hover .meta-arrow{transform:translateX(3px);}
.empty-state{
  grid-column:1/-1;background:var(--paper-2);border:1px dashed var(--line-light);
  border-radius:var(--radius);padding:48px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:32% 1fr;gap:44px;align-items:start;}
.faq-side{position:sticky;top:118px;}
.faq-side .section-title{margin-top:10px;}
.faq-side p{margin-top:12px;color:var(--text-2);font-size:15px;}
.contact-card{
  margin-top:24px;background:var(--paper-2);border:1px solid var(--line-light);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);
}
.contact-card b{display:block;font-size:16px;color:var(--text-1);}
.contact-card span{display:block;margin-top:8px;font-size:14px;color:var(--text-2);}
.contact-card .btn{margin-top:16px;}
.acc-item{
  position:relative;background:var(--paper-2);border:1px solid var(--line-light);
  border-radius:var(--radius);overflow:hidden;transition:box-shadow .18s ease;
}
.acc-item + .acc-item{margin-top:12px;}
.acc-item:hover{box-shadow:var(--shadow);}
.acc-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;
  transition:background .18s ease;
}
.acc-item.is-open::before{background:var(--primary);}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .18s ease;
}
.acc-head:focus-visible{outline:3px solid var(--primary-100);outline-offset:-3px;}
.acc-item.is-open .acc-head{color:var(--primary);}
.acc-icon{flex:0 0 auto;color:var(--text-3);transition:transform .2s ease;}
.acc-item.is-open .acc-icon{transform:rotate(180deg);color:var(--primary);}
.acc-body{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.acc-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 88px;}
.cta{
  position:relative;overflow:hidden;border-radius:20px;
  background-color:var(--ink-800);
  background-image:linear-gradient(118deg,rgba(255,90,31,.26),rgba(228,74,18,.14) 46%,rgba(23,27,33,0) 78%);
  padding:40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  border:1px solid var(--line-dark);
}
.cta::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:280px;height:280px;
  background:linear-gradient(135deg,rgba(255,90,31,.28),rgba(255,90,31,0));
  transform:rotate(24deg);border-radius:28px;pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:60ch;}
.cta-text h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;color:#fff;}
.cta-text p{margin-top:12px;color:rgba(255,255,255,.68);font-size:15px;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.92);padding:72px 0 32px;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.1fr;gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:12px;}
.footer-brand b{color:#fff;font-size:16px;font-weight:700;}
.footer-slogan{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:32ch;}
.footer-tags{margin-top:16px;}
.footer-tags .tag{
  display:inline-block;background:rgba(255,255,255,.08);color:rgba(255,255,255,.7);
  font-size:12px;padding:4px 12px;border-radius:999px;margin:6px 8px 0 0;
}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color .18s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-col address{font-style:normal;font-size:14px;color:rgba(255,255,255,.62);line-height:1.9;}
.footer-bottom{
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:40px;}
  .container{padding:0 22px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .section--tight{padding:52px 0;}
  .cta-wrap{padding:0 0 64px;}
  .hero{padding:56px 0 88px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:2;}
  .hero-sub{max-width:none;}
  .steps{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}
  .step-link{display:none;}
  .step p{max-width:none;}
  .case{grid-template-columns:1fr;gap:24px;}
  .case.reverse .case-media{order:0;}
  .case + .case{margin-top:44px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:32px;}
  .footer-brand-col{grid-column:1/-1;}
  .stats{margin-top:44px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section--tight{padding:40px 0;}
  .cta-wrap{padding:0 0 48px;}
  .hero{padding:40px 0 72px;}
  .hero-figure img{aspect-ratio:4/3;}
  .hero-cta .btn{width:100%;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{
    position:relative;padding-left:22px;padding-bottom:28px;
  }
  .step + .step{border-top:0;}
  .step:not(:last-child)::after{
    content:"";position:absolute;left:11px;top:40px;bottom:6px;
    border-left:2px dashed var(--line-light);
  }
  .step-num{position:relative;z-index:2;background:var(--paper);}
  .news-grid{grid-template-columns:1fr;}
  .news .section-head{align-items:flex-start;flex-direction:column;}
  .stats{grid-template-columns:1fr;gap:22px;}
  .stat{padding-right:0;}
  .stat + .stat{border-left:0;border-top:1px solid var(--line-light);padding-left:0;padding-top:22px;}
  .cta{flex-direction:column;align-items:flex-start;padding:28px;gap:24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .quick-link{display:none;}
  .hamburger{display:inline-flex;}
  .brand-text small{display:none;}
}
@media (max-width:480px){
  .brand-text b{font-size:15px;}
  .brand-mark{width:34px;height:34px;padding:7px;}
  .hero h1{font-size:26px;}
  .hero-sub{font-size:15px;}
  .btn{padding:13px 20px;font-size:14px;}
  .section-title{font-size:22px;}
  .acc-head{font-size:15px;padding:16px 18px;}
  .acc-inner{padding:0 18px 18px;font-size:14px;}
  .contact-card{padding:18px;}
}

/* roulang page: article */
:root{
  --ink-900:#101318;
  --ink-800:#171B21;
  --ink-700:#1F242C;
  --line-dark:rgba(255,255,255,.10);
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line-light:#E6E4DF;
  --primary:#FF5A1F;
  --primary-600:#E44A12;
  --primary-50:rgba(255,90,31,.10);
  --primary-100:rgba(255,90,31,.18);
  --teal:#14C2A3;
  --teal-50:rgba(20,194,163,.12);
  --amber:#FFC53D;
  --text-1:#14171C;
  --text-2:#4B525C;
  --text-3:#7A828C;
  --error:#E5484D;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,19,24,.06),0 12px 28px -18px rgba(16,19,24,.28);
  --shadow-2:0 4px 8px rgba(16,19,24,.08),0 20px 40px -22px rgba(16,19,24,.34);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--text-1);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--ink-900);
  border-bottom:1px solid transparent;transition:background var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{background:#0D1015;border-bottom-color:var(--line-dark);}
.brand-row{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:2px;padding:5px;border-radius:9px;background:var(--primary);flex-shrink:0;
}
.brand-mark span{background:rgba(255,255,255,.92);border-radius:1.5px;display:block;}
.brand-text b{display:block;font-size:16px;font-weight:700;line-height:1.25;letter-spacing:0;}
.brand-text em{display:block;font-style:normal;font-size:12px;line-height:1.4;color:rgba(255,255,255,.45);}
.quick-links{display:flex;align-items:center;gap:22px;margin-left:auto;}
.quick-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color var(--ease);}
.quick-links a:hover{color:#fff;}
.brand-cta{margin-left:auto;}
.quick-links + .brand-cta{margin-left:0;}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);color:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:rgba(255,255,255,.4);}

.channel-row{display:flex;align-items:center;gap:6px;height:52px;overflow-x:auto;scrollbar-width:none;}
.channel-row::-webkit-scrollbar{display:none;}
.channel{
  position:relative;padding:6px 12px;font-size:14px;color:rgba(255,255,255,.68);
  border-radius:999px;white-space:nowrap;transition:color var(--ease),background var(--ease);
}
.channel:hover{color:#fff;background:rgba(255,255,255,.07);}
.channel.is-active{color:#fff;font-weight:600;}
.channel.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--primary);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 26px -16px rgba(255,90,31,.9);}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(255,90,31,.95);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px var(--primary-100);}
.btn-ghost{border-color:var(--primary);color:var(--primary);background:transparent;}
.btn-ghost:hover{background:var(--primary-50);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-dark-ghost{border-color:rgba(255,255,255,.24);color:#fff;background:transparent;}
.btn-dark-ghost:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;transition:color var(--ease);}
.text-link:hover{color:var(--primary-600);text-decoration:underline;text-underline-offset:4px;}
.text-link .arrow{transition:transform var(--ease);}
.text-link:hover .arrow{transform:translateX(2px);}

/* ---------- article head ---------- */
.article-head{background:var(--paper-2);border-bottom:1px solid var(--line-light);}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding-top:22px;font-size:14px;color:var(--text-3);}
.crumbs a{color:var(--text-3);transition:color var(--ease);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:#C9C6C0;}
.crumbs .current{color:var(--text-1);max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(28px,3.6vw,42px);font-weight:700;line-height:1.28;color:var(--text-1);
  margin:18px 0 16px;letter-spacing:0;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding-bottom:26px;font-size:13.5px;color:var(--text-3);}
.article-meta .dot{color:#C9C6C0;}
.meta-chip{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:var(--teal-50);color:#0E8F79;font-size:13px;font-weight:600;
}

/* ---------- article layout ---------- */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;padding:44px 0 0;}
.article-main{min-width:0;max-width:760px;}
.article-side{min-width:0;}

.article-content{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-lg);
  padding:34px 40px 40px;font-size:17px;line-height:1.9;color:#242830;
  box-shadow:var(--shadow-1);overflow-wrap:break-word;word-break:break-word;
}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.1em;}
.article-content h2{
  font-size:24px;font-weight:700;line-height:1.45;color:var(--text-1);
  margin:36px 0 14px;padding-left:14px;border-left:4px solid var(--primary);border-radius:2px;
}
.article-content h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--text-1);margin:26px 0 10px;}
.article-content h4{font-size:17px;font-weight:600;color:var(--text-1);margin:20px 0 8px;}
.article-content ul,.article-content ol{margin:0 0 1.1em;padding-left:22px;}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li{margin-bottom:.5em;}
.article-content blockquote{
  margin:22px 0;padding:14px 20px;background:var(--primary-50);
  border-left:4px solid var(--primary);border-radius:0 10px 10px 0;color:var(--text-2);font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:12px;margin:22px 0;height:auto;}
.article-content figure{margin:22px 0;}
.article-content figcaption{font-size:13.5px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-content th,.article-content td{border:1px solid var(--line-light);padding:10px 14px;text-align:left;}
.article-content th{background:var(--paper);font-weight:600;color:var(--text-1);}
.article-content code{background:var(--paper);border:1px solid var(--line-light);border-radius:6px;padding:1px 6px;font-size:.9em;}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-content hr{border:none;border-top:1px dashed var(--line-light);margin:32px 0;}

/* ---------- tags / related / back ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:30px;}
.tag-row .label{font-size:13.5px;color:var(--text-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:var(--paper-2);border:1px solid var(--line-light);color:var(--text-2);
  font-size:13.5px;line-height:1.5;transition:all var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-50);}

.section-block{margin-top:48px;}
.section-block > h2{
  font-size:22px;font-weight:700;color:var(--text-1);line-height:1.4;
  display:flex;align-items:center;gap:10px;margin-bottom:20px;
}
.section-block > h2::before{content:"";width:6px;height:20px;border-radius:3px;background:var(--primary);display:block;}

.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:flex;flex-direction:column;background:var(--paper-2);border:1px solid var(--line-light);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DAD7D1;}
.related-card .thumb{aspect-ratio:16/10;overflow:hidden;background:#EDEBE6;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .body{padding:16px 18px 18px;}
.related-card h3{font-size:15.5px;font-weight:600;line-height:1.5;color:var(--text-1);margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card p{font-size:13.5px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

.back-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- sidebar ---------- */
.side-card{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);
  padding:20px 20px 18px;box-shadow:var(--shadow-1);margin-bottom:20px;
}
.side-card h3{font-size:15px;font-weight:700;color:var(--text-1);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--primary);display:block;}
.toc{display:flex;flex-direction:column;max-height:340px;overflow-y:auto;}
.toc a{
  display:block;font-size:14px;line-height:1.6;color:var(--text-2);padding:7px 0 7px 12px;
  border-left:2px solid var(--line-light);transition:color var(--ease),border-color var(--ease);
}
.toc a:hover{color:var(--primary);border-left-color:var(--primary);}
.toc a.lv3{padding-left:24px;font-size:13.5px;color:var(--text-3);}
.side-link{display:flex;gap:12px;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line-light);transition:transform var(--ease);}
.side-link:last-child{border-bottom:none;padding-bottom:0;}
.side-link:hover{transform:translateX(2px);}
.side-link img{width:64px;height:48px;object-fit:cover;border-radius:9px;flex-shrink:0;}
.side-link b{display:block;font-size:14px;font-weight:600;color:var(--text-1);line-height:1.45;}
.side-link em{display:block;font-style:normal;font-size:12.5px;color:var(--text-3);line-height:1.5;}
.side-cta{background:var(--ink-800);border-color:var(--ink-800);color:#fff;}
.side-cta h3{color:#fff;}
.side-cta h3::before{background:var(--amber);}
.side-cta p{font-size:13.5px;line-height:1.75;color:rgba(255,255,255,.62);margin-bottom:16px;}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-lg);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:16px;background:var(--primary-50);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:26px;font-weight:700;
}
.empty-state h2{font-size:22px;font-weight:700;color:var(--text-1);margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:24px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.92);margin-top:72px;padding-bottom:32px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1.2fr;gap:36px;padding:56px 0 36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;margin-bottom:14px;}
.footer-brand .brand-mark{width:30px;height:30px;padding:4px;border-radius:8px;}
.footer-slogan{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:16px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.footer-tags .tag{
  background:rgba(255,255,255,.08);border-color:transparent;color:rgba(255,255,255,.7);
  padding:5px 12px;font-size:12.5px;
}
.footer-tags .tag:hover{color:#fff;background:rgba(255,255,255,.14);border-color:transparent;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color var(--ease);}
.footer-col a:hover{color:var(--primary);}
.footer-col address{font-style:normal;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  border-top:1px solid var(--line-dark);padding-top:22px;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,19,24,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:80%;max-width:340px;background:var(--paper);z-index:90;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:22px 20px 28px;overflow-y:auto;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-head b{font-size:15px;font-weight:700;color:var(--text-1);}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line-light);background:var(--paper-2);cursor:pointer;}
.drawer-group{margin-bottom:20px;}
.drawer-group span{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:10px;letter-spacing:0;}
.drawer-group a{
  display:block;padding:11px 14px;border-radius:10px;font-size:15px;color:var(--text-1);
  background:var(--paper-2);border:1px solid var(--line-light);margin-bottom:9px;transition:all var(--ease);
}
.drawer-group a:hover{border-color:var(--primary);color:var(--primary);}
.drawer .btn{width:100%;margin-top:6px;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-main{max-width:none;}
  .article-side{margin-top:8px;}
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:30px;}
  .related{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:900px){
  .quick-links{display:none;}
  .menu-toggle{display:inline-flex;}
  .article-grid{padding-top:32px;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-row{height:64px;gap:12px;}
  .brand-text b{font-size:14.5px;}
  .brand-text em{display:none;}
  .channel-row{height:48px;}
  .crumbs{padding-top:18px;font-size:13px;}
  .crumbs .current{max-width:180px;}
  .article-title{margin:14px 0 12px;}
  .article-content{padding:24px 20px 28px;font-size:16.5px;line-height:1.9;}
  .article-content h2{font-size:21px;margin-top:28px;}
  .article-content h3{font-size:17.5px;}
  .related{grid-template-columns:minmax(0,1fr);}
  .site-footer{margin-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px;}
  .footer-bottom{flex-direction:column;gap:6px;font-size:12.5px;}
  .section-block{margin-top:36px;}
  .back-row .btn{width:100%;}
}
@media (max-width:480px){
  .article-title{font-size:25px;}
  .btn{padding:12px 18px;font-size:14.5px;}
  .brand-cta{padding:9px 14px;font-size:13.5px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#101318;
  --ink-800:#171B21;
  --ink-700:#1F242C;
  --line-dark:rgba(255,255,255,.10);
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line-light:#E6E4DF;
  --primary:#FF5A1F;
  --primary-600:#E44A12;
  --primary-50:rgba(255,90,31,.10);
  --primary-100:rgba(255,90,31,.18);
  --teal:#14C2A3;
  --teal-50:rgba(20,194,163,.12);
  --amber:#FFC53D;
  --text-1:#14171C;
  --text-2:#4B525C;
  --text-3:#7A828C;
  --danger:#E5484D;
  --warn:#F0A020;
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(16,19,24,.06), 0 12px 28px -18px rgba(16,19,24,.28);
  --shadow-hover:0 4px 8px rgba(16,19,24,.08), 0 20px 40px -22px rgba(16,19,24,.34);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;object-fit:cover;border-radius:var(--radius);}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
input,textarea,select{font:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
svg{display:block;}
:focus-visible{outline:3px solid var(--primary-100);outline-offset:2px;border-radius:6px;}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-weight:600;font-size:15px;line-height:1;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px -14px rgba(255,90,31,.9);}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-50);}
.btn-dark-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff;}
.btn-dark-ghost:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px;}
.link-arrow svg{transition:transform .18s ease;}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}
.link-arrow:hover svg{transform:translateX(2px);}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-block;padding:5px 12px;border-radius:999px;font-size:13px;line-height:1.4;
  background:var(--paper-2);border:1px solid var(--line-light);color:var(--text-2);
}
.badge{
  display:inline-block;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;line-height:1.5;
}
.badge-hot{background:var(--primary);color:#fff;}
.badge-teal{background:var(--teal-50);color:#0E8F79;}
.badge-amber{background:rgba(255,197,61,.22);color:#8A6100;}
.badge-soft{background:var(--primary-50);color:var(--primary-600);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{background:rgba(16,19,24,.94);box-shadow:0 12px 30px -20px rgba(0,0,0,.9);}
.brand-row{display:flex;align-items:center;gap:24px;min-height:66px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  display:grid;grid-template-columns:repeat(3,1fr);gap:3px;
  width:34px;height:34px;padding:5px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--primary-600));
}
.brand-mark span{background:rgba(255,255,255,.92);border-radius:2px;}
.brand-mark span:nth-child(1),.brand-mark span:nth-child(9){background:rgba(255,255,255,.55);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{color:#fff;font-size:17px;font-weight:700;}
.brand-text small{color:rgba(255,255,255,.45);font-size:12px;margin-top:3px;}
.quick-links{display:flex;align-items:center;gap:22px;margin-left:auto;}
.quick-links a{color:rgba(255,255,255,.68);font-size:14px;transition:color .18s ease;}
.quick-links a:hover{color:#fff;}
.brand-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid var(--line-dark);background:transparent;
  color:rgba(255,255,255,.72);cursor:pointer;transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.icon-btn:hover{color:#fff;border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.06);}
.hamburger{
  display:none;width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line-dark);background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;background:rgba(255,255,255,.85);border-radius:2px;}

.channel-row{
  display:flex;align-items:center;gap:26px;
  padding-top:6px;padding-bottom:12px;
  overflow-x:auto;scrollbar-width:none;
}
.channel-row::-webkit-scrollbar{display:none;}
.channel{
  position:relative;flex:0 0 auto;padding:4px 0 6px;
  color:rgba(255,255,255,.68);font-size:14px;transition:color .18s ease;
}
.channel:hover{color:rgba(255,255,255,.95);}
.channel.is-active{color:var(--primary);font-weight:600;}
.channel.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--primary);
}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,19,24,.5);z-index:80;opacity:0;pointer-events:none;
  transition:opacity .22s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:80%;max-width:340px;z-index:90;
  background:var(--paper);padding:22px 20px 28px;overflow-y:auto;
  transform:translateX(102%);transition:transform .26s ease;
  display:flex;flex-direction:column;gap:22px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head span{font-weight:700;font-size:16px;}
.drawer-close{
  width:34px;height:34px;border-radius:8px;border:1px solid var(--line-light);background:var(--paper-2);
  cursor:pointer;font-size:18px;line-height:1;
}
.drawer-group h3{font-size:13px;color:var(--text-3);font-weight:600;margin-bottom:10px;}
.drawer-group a{
  display:block;padding:11px 12px;border-radius:10px;background:var(--paper-2);
  border:1px solid var(--line-light);color:var(--text-1);font-size:15px;margin-bottom:8px;
}
.drawer-group a.is-active{border-color:var(--primary);color:var(--primary);background:var(--primary-50);}
.drawer-cta{margin-top:auto;}

/* ============ 分类头部条 ============ */
.page-hero{
  position:relative;background:var(--paper-2);border-bottom:1px solid var(--line-light);
  padding:52px 0 56px;min-height:250px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;right:-60px;top:-40px;width:280px;height:280px;
  background:var(--primary-50);transform:rotate(18deg);border-radius:40px;
}
.page-hero::after{
  content:"";position:absolute;right:180px;bottom:-70px;width:180px;height:180px;
  border:1px dashed var(--line-light);border-radius:50%;
}
.page-hero .container{position:relative;z-index:1;}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:18px;}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--line-light);}
.crumb .current{color:var(--text-1);}
.page-hero h1{
  font-size:clamp(30px,4.4vw,46px);font-weight:700;line-height:1.25;max-width:840px;
}
.page-hero .hero-note{
  margin-top:16px;max-width:720px;color:var(--text-2);font-size:16px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ============ 主体布局 ============ */
.page-main{padding:64px 0 8px;}
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:44px;align-items:start;}

.side-panel{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
}
.side-card h3{font-size:14px;color:var(--text-3);font-weight:600;margin-bottom:14px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;
  color:var(--text-2);font-size:14px;transition:background-color .18s ease,color .18s ease;
}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--line-light);flex:0 0 auto;}
.side-nav a:hover{background:var(--primary-50);color:var(--primary-600);}
.side-nav a:hover::before{background:var(--primary);}
.side-tags{display:flex;flex-wrap:wrap;gap:8px;}

.content-col{display:flex;flex-direction:column;gap:56px;}

.section-head{margin-bottom:26px;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;}
.section-head p{margin-top:12px;color:var(--text-2);max-width:760px;font-size:15px;}

/* ============ 横卡列表 ============ */
.entry-list{display:flex;flex-direction:column;gap:20px;}
.entry-card{
  display:grid;grid-template-columns:240px minmax(0,1fr);
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .18s ease,box-shadow .18s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.entry-thumb{position:relative;overflow:hidden;}
.entry-thumb img{width:100%;height:100%;min-height:160px;border-radius:0;transition:transform .3s ease;}
.entry-card:hover .entry-thumb img{transform:scale(1.04);}
.entry-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;}
.entry-body h3{font-size:20px;font-weight:600;}
.entry-body h3 a:hover{color:var(--primary);}
.entry-body p{color:var(--text-2);font-size:15px;margin:0;}
.entry-foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:auto;padding-top:6px;font-size:13px;color:var(--text-3);}
.entry-foot .dot{width:4px;height:4px;border-radius:50%;background:var(--line-light);}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.step{position:relative;padding-top:4px;}
.step-num{
  width:32px;height:32px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--primary);color:var(--primary);font-weight:700;font-size:14px;
  background:var(--primary-50);margin-bottom:14px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step p{color:var(--text-2);font-size:14.5px;margin:0;}
.step::after{
  content:"";position:absolute;left:46px;top:18px;right:-24px;border-top:1px dashed var(--line-light);
}
.step::before{
  content:"";position:absolute;left:calc(50% + 0px);top:14px;width:8px;height:8px;border-radius:50%;
  background:var(--amber);display:none;
}
.step:last-child::after{display:none;}

/* ============ 场景图文 ============ */
.scene{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;align-items:center;
  margin-bottom:44px;
}
.scene:last-child{margin-bottom:0;}
.scene.reverse .scene-media{order:2;}
.scene-media img{width:100%;aspect-ratio:4/3;border-radius:var(--radius);box-shadow:var(--shadow);}
.scene-text h3{font-size:22px;margin:14px 0 10px;}
.scene-text p{color:var(--text-2);font-size:15px;}
.check-list{margin-top:14px;display:flex;flex-direction:column;gap:9px;}
.check-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text-2);font-size:14.5px;}
.check-list li svg{flex:0 0 auto;margin-top:5px;color:var(--primary);}

/* ============ 数据条 ============ */
.stat-bar{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius);
  margin-top:44px;box-shadow:var(--shadow);
}
.stat{padding:24px 20px;text-align:center;border-right:1px solid var(--line-light);}
.stat:last-child{border-right:none;}
.stat b{display:block;font-size:28px;font-weight:700;color:var(--amber);line-height:1.2;font-family:Inter,system-ui,sans-serif;}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:32% minmax(0,1fr);gap:36px;align-items:start;}
.faq-side{position:sticky;top:132px;}
.faq-side h2{font-size:clamp(24px,2.6vw,32px);}
.faq-side > p{color:var(--text-2);font-size:15px;margin-top:12px;}
.faq-contact{
  margin-top:20px;background:var(--paper-2);border:1px solid var(--line-light);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);
}
.faq-contact b{display:block;font-size:15px;margin-bottom:6px;}
.faq-contact p{font-size:14px;color:var(--text-2);margin-bottom:14px;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius);
  padding:18px 22px;box-shadow:var(--shadow);position:relative;transition:border-color .18s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;
  background:transparent;transition:background-color .18s ease;
}
.faq-item[open]{border-color:var(--line-light);}
.faq-item[open]::before{background:var(--primary);}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16.5px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item[open] summary{color:var(--primary);}
.faq-arrow{
  flex:0 0 auto;width:10px;height:10px;border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform .2s ease,border-color .2s ease;margin-top:-3px;
}
.faq-item[open] .faq-arrow{transform:rotate(-135deg);margin-top:3px;border-color:var(--primary);}
.faq-body{padding-top:12px;color:var(--text-2);font-size:15px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-800);
  border-radius:20px;padding:40px;margin:72px 0 72px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background:linear-gradient(135deg,var(--primary),var(--primary-600) 65%,transparent);
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-50px;width:260px;height:260px;
  background:rgba(255,255,255,.06);transform:skewX(-16deg);border-radius:28px;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px);}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin-top:12px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);margin-top:72px;padding:72px 0 32px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:12px;}
.footer-brand b{color:#fff;font-size:16px;}
.footer-slogan{color:rgba(255,255,255,.62);font-size:14px;margin-top:16px;max-width:300px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-tags .tag{background:rgba(255,255,255,.08);border-color:transparent;color:rgba(255,255,255,.7);}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.62);font-size:14px;transition:color .18s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-col address{font-style:normal;color:rgba(255,255,255,.62);font-size:14px;line-height:1.9;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:rgba(255,255,255,.45);font-size:13px;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .layout{grid-template-columns:236px minmax(0,1fr);gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .step:nth-child(2)::after{display:none;}
}
@media (max-width:1023px){
  .quick-links{display:none;}
  .layout{grid-template-columns:minmax(0,1fr);}
  .side-panel{position:static;}
  .side-card{padding:18px;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);}
  .faq-side{position:static;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand-col{grid-column:1 / -1;}
  .cta-band{grid-template-columns:minmax(0,1fr);}
  .entry-card{grid-template-columns:200px minmax(0,1fr);}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .hamburger{display:flex;}
  .brand-text b{font-size:15px;}
  .brand-text small{display:none;}
  .brand-row{min-height:60px;gap:12px;}
  .brand-actions .btn-sm{display:none;}
  .page-hero{padding:36px 0 40px;min-height:220px;}
  .page-main{padding:44px 0 0;}
  .content-col{gap:44px;}
  .entry-card{grid-template-columns:minmax(0,1fr);}
  .entry-thumb img{min-height:190px;aspect-ratio:16/9;}
  .steps{grid-template-columns:minmax(0,1fr);gap:22px;}
  .step{padding-left:20px;border-left:2px dashed var(--line-light);}
  .step::after{display:none;}
  .scene{grid-template-columns:minmax(0,1fr);gap:20px;}
  .scene.reverse .scene-media{order:0;}
  .stat-bar{grid-template-columns:minmax(0,1fr);}
  .stat{border-right:none;border-bottom:1px solid var(--line-light);}
  .stat:last-child{border-bottom:none;}
  .cta-band{padding:28px;border-radius:16px;margin:56px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .site-footer{padding-top:52px;}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px;}
  .section-head h2,.faq-side h2,.cta-band h2{font-size:22px;}
  .entry-body{padding:16px;}
  .entry-body h3{font-size:18px;}
  .faq-item{padding:16px;}
  .faq-item summary{font-size:15.5px;}
  .btn{padding:13px 20px;font-size:14.5px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#101318;
  --ink-800:#171B21;
  --ink-700:#1F242C;
  --line-dark:rgba(255,255,255,.10);
  --paper:#F6F5F2;
  --paper-2:#FFFFFF;
  --line-light:#E6E4DF;
  --primary:#FF5A1F;
  --primary-600:#E44A12;
  --primary-50:rgba(255,90,31,.10);
  --primary-100:rgba(255,90,31,.18);
  --teal:#14C2A3;
  --teal-50:rgba(20,194,163,.12);
  --amber:#FFC53D;
  --text-1:#14171C;
  --text-2:#4B525C;
  --text-3:#7A828C;
  --err:#E5484D;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,19,24,.06),0 12px 28px -18px rgba(16,19,24,.28);
  --shadow-2:0 4px 8px rgba(16,19,24,.08),0 20px 40px -22px rgba(16,19,24,.34);
  --wrap:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:Inter,system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text-1);
  background:var(--paper);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-card);object-fit:cover}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
p+p{margin-top:1.1em}
:focus-visible{outline:3px solid var(--primary-100);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;font-weight:700}
.section-head .sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--primary);text-transform:none}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px}

/* ============ 头部 / 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(16,19,24,.96);border-bottom:1px solid var(--line-dark);backdrop-filter:saturate(140%) blur(6px)}
.brand-row{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:.01em}
.brand-mark{display:grid;grid-template-columns:repeat(3,4px);grid-template-rows:repeat(3,4px);gap:2px}
.brand-mark span{display:block;background:var(--primary);border-radius:1px}
.brand-mark span:nth-child(2),.brand-mark span:nth-child(6),.brand-mark span:nth-child(8){background:var(--teal)}
.brand-mark span:nth-child(5){background:var(--amber)}
.brand .brand-domain{font-family:var(--font-num);font-size:12px;font-weight:500;color:rgba(255,255,255,.45);margin-left:6px;letter-spacing:.04em}
.brand-row .spacer{flex:1}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line-dark);background:transparent;color:rgba(255,255,255,.82);cursor:pointer;transition:border-color .18s ease,color .18s ease,background .18s ease}
.icon-btn:hover{border-color:rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.06)}
.hamburger{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line-dark);background:transparent;cursor:pointer;position:relative}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:#fff;border-radius:2px;transition:.2s ease}
.hamburger span:nth-child(1){top:13px}
.hamburger span:nth-child(2){top:18px}
.hamburger span:nth-child(3){top:23px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -12px rgba(255,90,31,.9)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-50)}
.btn-dark-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff}
.btn-dark-ghost:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.link-more{color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .18s ease}
.link-more:hover{gap:10px;text-decoration:underline;text-underline-offset:3px}

.channel-row-wrap{border-top:1px solid var(--line-dark)}
.channel-row{display:flex;align-items:center;gap:6px;height:48px;overflow-x:auto;scrollbar-width:none}
.channel-row::-webkit-scrollbar{display:none}
.channel{position:relative;flex:0 0 auto;padding:0 14px;height:48px;display:inline-flex;align-items:center;font-size:14.5px;color:rgba(255,255,255,.68);border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease}
.channel:hover{color:#fff}
.channel.is-active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(16,19,24,.5);opacity:0;visibility:hidden;transition:.22s ease;z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:80%;max-width:340px;background:var(--paper);z-index:90;transform:translateX(102%);transition:transform .26s ease;overflow-y:auto;padding:22px 20px 28px;box-shadow:-20px 0 50px -24px rgba(0,0,0,.5)}
.drawer.is-open{transform:translateX(0)}
.drawer-close{width:34px;height:34px;border-radius:9px;border:1px solid var(--line-light);background:var(--paper-2);cursor:pointer;font-size:16px;line-height:1;color:var(--text-2)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head b{font-size:15px}
.drawer-group h4{font-size:12.5px;color:var(--text-3);font-weight:600;margin:18px 0 8px}
.drawer-link{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--text-1);background:var(--paper-2);border:1px solid var(--line-light);margin-bottom:8px}
.drawer-link.is-active{color:var(--primary);border-color:var(--primary-100);background:var(--primary-50);font-weight:600}
.drawer .btn{margin-top:18px}

/* ============ 分类头部条（深色） ============ */
.cat-hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden}
.cat-hero-media{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center right;opacity:.30}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(16,19,24,.97) 0%,rgba(16,19,24,.88) 46%,rgba(16,19,24,.55) 100%)}
.cat-hero-slice{position:absolute;right:-60px;bottom:-80px;width:340px;height:340px;background:linear-gradient(140deg,var(--primary),var(--primary-600));opacity:.22;transform:rotate(24deg);border-radius:28px;z-index:1}
.cat-hero-slice.b{right:180px;bottom:-160px;width:220px;height:220px;opacity:.12;transform:rotate(-14deg)}
.cat-hero-inner{position:relative;z-index:2;padding:44px 24px 48px;min-height:260px}
.crumbs{font-size:13.5px;color:rgba(255,255,255,.5);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:18px}
.crumbs .sep{opacity:.5}
.crumbs .current{color:rgba(255,255,255,.92)}
.cat-hero h1{font-size:clamp(30px,4.4vw,46px);line-height:1.25;font-weight:700;max-width:16em}
.cat-hero .lead{margin-top:16px;max-width:60ch;color:rgba(255,255,255,.68);font-size:16px}
.cat-hero .hero-cta{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.cat-hero .hero-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.chip-line{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line-dark);font-size:13px;color:rgba(255,255,255,.78)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px var(--teal-50)}
.dot.amber{background:var(--amber);box-shadow:0 0 0 3px rgba(255,197,61,.16)}

/* ============ 筛选 + 网格 ============ */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px}
.filter-bar .label{font-size:13.5px;color:var(--text-3);margin-right:4px}
.filter-chip{padding:8px 16px;border-radius:999px;border:1px solid var(--line-light);background:var(--paper-2);color:var(--text-2);font-size:14px;cursor:pointer;transition:.18s ease}
.filter-chip:hover{border-color:var(--primary);color:var(--primary)}
.filter-chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sec-card{
  background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  position:relative;overflow:hidden;
}
.sec-card::before{content:"";position:absolute;top:0;left:0;width:0;height:0;border-top:14px solid var(--primary-100);border-right:14px solid transparent}
.sec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DAD7D0}
.sec-card .card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sec-num{width:32px;height:32px;border-radius:6px;border:1px solid var(--primary);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-num);font-weight:700;font-size:13px}
.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;font-size:12.5px;font-weight:600}
.badge-teal{background:var(--teal-50);color:#0E8D77}
.badge-orange{background:var(--primary-50);color:var(--primary-600)}
.badge-amber{background:rgba(255,197,61,.18);color:#8A6100}
.sec-card h3{font-size:20px;font-weight:600;line-height:1.5}
.sec-card p{margin-top:10px;color:var(--text-2);font-size:15px;line-height:1.75}
.mini-list{margin-top:14px;border-top:1px dashed var(--line-light);padding-top:14px}
.mini-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:6px}
.mini-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--teal-50);border:1px solid var(--teal)}
.mini-list li:last-child{margin-bottom:0}
.grid-empty{display:none;grid-column:1/-1;text-align:center;padding:44px 20px;background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);color:var(--text-2)}

/* ============ 步骤流程 ============ */
.steps-wrap{background:var(--paper-2);border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light)}
.step-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.step{padding:0 22px 0 0;position:relative}
.step .step-num{width:32px;height:32px;border-radius:6px;border:1px solid var(--primary);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-num);font-weight:700;font-size:13px;background:var(--paper-2)}
.step h3{margin-top:16px;font-size:18px;font-weight:600}
.step p{margin-top:8px;color:var(--text-2);font-size:14.5px;line-height:1.75;max-width:26ch}
.step-rail{margin-top:0;height:1px;position:relative;border-top:1px dashed var(--line-light)}
.step .rail{position:absolute;top:16px;left:44px;right:16px;border-top:1px dashed var(--line-light)}
.step .rail::after{content:"";position:absolute;right:-4px;top:-4px;width:8px;height:8px;border-radius:50%;background:var(--amber)}
.step:last-child .rail{display:none}

/* ============ 图文区块 ============ */
.fig-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:56px}
.fig-row:last-child{margin-bottom:0}
.fig-row .fig-media{position:relative}
.fig-row .fig-media img{aspect-ratio:4/3;width:100%;border-radius:var(--radius-card);box-shadow:var(--shadow-1)}
.fig-row .fig-media::after{content:"";position:absolute;left:-14px;bottom:-14px;width:72px;height:72px;border-left:3px solid var(--primary);border-bottom:3px solid var(--primary);border-radius:0 0 0 10px}
.fig-row.reverse .fig-media{order:2}
.fig-row.reverse .fig-text{order:1}
.fig-text h3{font-size:22px;font-weight:700;line-height:1.5}
.fig-text p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.check-list{margin-top:18px}
.check-list li{position:relative;padding-left:26px;margin-bottom:10px;color:var(--text-1);font-size:15px}
.check-list li::before{content:"";position:absolute;left:0;top:6px;width:14px;height:8px;border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(-45deg);border-radius:1px}

/* ============ 状态清单 ============ */
.state-panel{background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden}
.state-item{display:grid;grid-template-columns:200px 1fr;gap:24px;padding:22px 26px;border-bottom:1px solid var(--line-light);align-items:start}
.state-item:last-child{border-bottom:none}
.state-item .state-tag{font-size:14px;font-weight:600;color:var(--text-1)}
.state-item .state-tag span{display:block;margin-top:8px;font-size:13px;font-weight:500;color:var(--text-3)}
.state-item p{color:var(--text-2);font-size:15px;line-height:1.8}
.state-item b{color:var(--text-1)}

/* ============ 数据条 ============ */
.data-strip{display:grid;grid-template-columns:repeat(3,1fr);margin-top:48px;background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);overflow:hidden}
.data-strip .cell{padding:26px 24px;text-align:left;border-right:1px solid var(--line-light)}
.data-strip .cell:last-child{border-right:none}
.data-strip .num{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--primary);line-height:1.2}
.data-strip .num.amber{color:#C58A00}
.data-strip .num.teal{color:#0E8D77}
.data-strip .cap{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:32% 68%;gap:40px;align-items:start}
.faq-aside{position:sticky;top:130px}
.faq-aside h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;font-weight:700}
.faq-aside .sub{margin-top:12px;color:var(--text-2);font-size:15px}
.contact-card{margin-top:24px;background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1)}
.contact-card b{display:block;font-size:15.5px}
.contact-card p{margin-top:8px;font-size:14px;color:var(--text-2)}
.contact-card .btn{margin-top:16px}
.faq-list{display:grid;gap:14px}
.faq-item{background:var(--paper-2);border:1px solid var(--line-light);border-radius:var(--radius-card);overflow:hidden;transition:border-color .2s ease}
.faq-item.is-open{border-color:#DAD7D0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:transparent;border:none;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);cursor:pointer;position:relative}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--primary);border-radius:0 3px 3px 0}
.faq-q .arrow{flex:0 0 auto;width:18px;height:18px;position:relative;transition:transform .2s ease}
.faq-q .arrow::before,.faq-q .arrow::after{content:"";position:absolute;top:8px;width:9px;height:2px;background:var(--text-3);border-radius:2px}
.faq-q .arrow::before{left:0;transform:rotate(45deg)}
.faq-q .arrow::after{right:0;transform:rotate(-45deg)}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg)}
.faq-item.is-open .faq-q .arrow::before,.faq-item.is-open .faq-q .arrow::after{background:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ CTA 带 ============ */
.cta-band{position:relative;background:var(--ink-800);border-radius:20px;padding:40px;overflow:hidden;color:#fff}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,90,31,.30),rgba(228,74,18,.10) 58%,transparent 100%)}
.cta-band::after{content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;background:rgba(255,255,255,.06);transform:rotate(24deg);border-radius:24px}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:center}
.cta-inner h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.68);font-size:15.5px;max-width:52ch}
.cta-actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.68);margin-top:72px;padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16.5px;font-weight:700}
.footer-slogan{margin-top:14px;font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.62);max-width:34ch}
.footer-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.footer-tags .tag{font-size:12.5px;padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.08);color:rgba(255,255,255,.72)}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.62);transition:color .18s ease}
.footer-col a:hover{color:var(--primary)}
.footer-col address{font-style:normal;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.45)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:1080px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:28px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .grid-3{grid-template-columns:repeat(2,1fr);gap:20px}
  .step-track{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .step:nth-child(2) .rail{display:none}
  .fig-row{gap:32px;margin-bottom:44px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .state-item{grid-template-columns:1fr;gap:10px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .channel-row-wrap{display:none}
  .hamburger{display:block}
  .brand-row{height:60px;gap:12px}
  .brand{font-size:15.5px}
  .brand .brand-domain{display:none}
  .nav-actions .icon-btn{display:none}
  .cat-hero-inner{padding:32px 16px 38px;min-height:240px}
  .cat-hero .lead{font-size:15px}
  .grid-3{grid-template-columns:1fr}
  .step-track{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 32px 22px;border-left:2px dashed var(--line-light)}
  .step .rail{display:none}
  .step:last-child{padding-bottom:0;border-left-color:transparent}
  .fig-row{grid-template-columns:1fr;gap:22px}
  .fig-row.reverse .fig-media,.fig-row.reverse .fig-text{order:initial}
  .data-strip{grid-template-columns:1fr}
  .data-strip .cell{border-right:none;border-bottom:1px solid var(--line-light)}
  .data-strip .cell:last-child{border-bottom:none}
  .cta-band{padding:28px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .cat-hero .hero-cta .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:48px 0 26px}
}
@media (max-width:480px){
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .sec-card{padding:20px 18px}
  .faq-q{padding:16px 16px;font-size:15px}
  .faq-a p{padding:0 16px 18px}
  .state-item{padding:18px 18px}
}