/* roulang page: index */
:root{
  --c-primary:#FF5A1F;
  --c-primary-dark:#E24A12;
  --c-primary-soft:#FFEDE4;
  --c-accent:#12B981;
  --c-accent-deep:#0E8F68;
  --c-accent-soft:#E6F7F1;
  --c-ink:#101418;
  --c-body:#1B2126;
  --c-muted:#6B7580;
  --c-line:#E8EBEA;
  --c-bg:#F4F6F5;
  --c-card:#FFFFFF;
  --r-card:16px;
  --r-img:12px;
  --r-block:24px;
  --r-btn:999px;
  --sh-1:0 1px 2px rgba(16,20,24,.05);
  --sh-2:0 10px 28px rgba(16,20,24,.09);
  --container:1200px;
  --nav-h:68px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease-out;}
a:hover{color:var(--c-primary-dark);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}
.container{max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:31px;line-height:1.3;}
.section-head p{margin:8px 0 0;color:var(--c-muted);font-size:14px;max-width:640px;}
.text-link{font-size:14px;font-weight:600;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.text-link i{transition:transform .25s ease-out;}
.text-link:hover i{transform:translateX(3px);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary-dark);background:var(--c-primary-soft);border-radius:var(--r-btn);padding:6px 14px;}
.eyebrow.green{color:var(--c-accent-deep);background:var(--c-accent-soft);}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:all .25s ease-out;cursor:pointer;line-height:1;}
.btn-lg{height:50px;padding:0 30px;font-size:16px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary-dark);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-ink);}
.btn-light:hover{background:#f1f3f2;color:var(--c-ink);transform:translateY(-1px);}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(255,90,31,.35);}
.pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-btn);font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);}
.pill.green{background:var(--c-accent-soft);color:var(--c-accent-deep);}
.pill.plain{background:var(--c-bg);color:var(--c-muted);}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--nav-h);background:#fff;border-bottom:1px solid var(--c-line);z-index:1030;transition:box-shadow .25s ease-out;}
.site-header.scrolled{box-shadow:0 6px 18px rgba(16,20,24,.06);}
.header-inner{height:var(--nav-h);display:flex;align-items:center;gap:28px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand svg{width:32px;height:32px;flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.brand-text i{font-size:12px;font-style:normal;color:var(--c-muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-body);padding:6px 0;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;border-radius:999px;background:var(--c-primary);transform:scaleX(0);transition:transform .25s ease-out;}
.nav-link:hover{color:var(--c-primary);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box i{position:absolute;left:14px;font-size:13px;color:var(--c-muted);pointer-events:none;}
.search-box input{width:220px;height:40px;border-radius:var(--r-btn);border:1px solid transparent;background:var(--c-bg);padding:0 16px 0 36px;font-size:14px;color:var(--c-body);transition:all .25s ease-out;}
.search-box input::placeholder{color:var(--c-muted);}
.search-box input:focus{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,31,.12);}
.hamburger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink);font-size:17px;align-items:center;justify-content:center;}
.mobile-drawer{position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;background:#fff;z-index:1029;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .25s ease-out,transform .25s ease-out;overflow-y:auto;}
.mobile-drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer .drawer-link{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);}
.mobile-drawer .drawer-link.active{color:var(--c-primary);font-weight:600;}
.mobile-drawer .drawer-body{padding:8px 0 120px;}
.mobile-drawer .drawer-cta{position:fixed;left:20px;right:20px;bottom:20px;}

/* Hero */
.hero{position:relative;margin-top:var(--nav-h);min-height:560px;display:flex;align-items:center;overflow:hidden;background:var(--c-ink);}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02);}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,20,24,.94) 0%,rgba(16,20,24,.82) 42%,rgba(16,20,24,.42) 100%);}
.hero-stripes{position:absolute;right:0;bottom:0;width:300px;height:130px;background:repeating-linear-gradient(45deg,rgba(255,90,31,.5) 0 8px,rgba(255,90,31,0) 8px 22px);opacity:.55;pointer-events:none;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .85fr;gap:48px;align-items:center;padding-top:70px;padding-bottom:70px;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#FFD9C6;background:rgba(255,90,31,.18);border:1px solid rgba(255,90,31,.45);border-radius:var(--r-btn);padding:6px 14px;margin-bottom:20px;}
.hero h1{font-size:42px;line-height:1.25;font-weight:700;color:#fff;max-width:640px;}
.hero-sub{margin:18px 0 0;font-size:17px;line-height:1.7;color:rgba(255,255,255,.82);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;}
.hero-points li{font-size:14px;color:rgba(255,255,255,.76);display:flex;align-items:center;gap:8px;}
.hero-points i{color:var(--c-accent);font-size:13px;}
.hero-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-block);padding:24px;backdrop-filter:blur(6px);}
.panel-head{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);letter-spacing:.06em;margin-bottom:18px;}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(18,185,129,.18);}
.panel-row{display:flex;align-items:baseline;justify-content:space-between;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.18);}
.panel-row span{font-size:14px;color:rgba(255,255,255,.72);}
.panel-row b{font-size:24px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;}
.panel-row b i{font-size:13px;font-style:normal;color:rgba(255,255,255,.6);margin-left:4px;}
.panel-row:last-of-type{border-bottom:0;}
.panel-foot{margin-top:12px;font-size:12px;color:rgba(255,255,255,.55);line-height:1.6;}

/* Trust strip */
.trust-strip{background:#fff;border-bottom:1px solid var(--c-line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.trust-item{padding:26px 24px;border-left:3px solid var(--c-primary);display:flex;flex-direction:column;gap:6px;}
.trust-item + .trust-item{border-top:0;}
.trust-item b{font-size:22px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;}
.trust-item span{font-size:13px;color:var(--c-muted);}

/* Selling points */
.points-grid{display:grid;grid-template-columns:58% 1fr;gap:24px;}
.card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:all .25s ease-out;}
.card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px);}
.card-media{overflow:hidden;border-radius:var(--r-img);margin-bottom:18px;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.card:hover .card-media img{transform:scale(1.04);}
.point-main{padding:24px;display:flex;flex-direction:column;}
.point-main .card-media{aspect-ratio:16/10;}
.point-main h3{font-size:22px;line-height:1.4;margin-bottom:10px;}
.point-main p{font-size:15px;color:var(--c-muted);margin-bottom:0;}
.point-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.point-mini{padding:22px;display:flex;flex-direction:column;gap:10px;}
.point-mini h3{font-size:19px;line-height:1.4;}
.point-mini p{font-size:14px;color:var(--c-muted);margin-bottom:0;}
.num-badge{width:38px;height:38px;border-radius:12px;background:var(--c-ink);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;}
.num-badge.orange{background:var(--c-primary);}
.num-badge.green{background:var(--c-accent);}

/* Scene demo */
.scene-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center;}
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.tab{height:38px;padding:0 18px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;color:var(--c-body);font-size:14px;font-weight:600;transition:all .25s ease-out;}
.tab:hover{border-color:var(--c-primary);color:var(--c-primary-dark);}
.tab.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.scene-title{font-size:22px;line-height:1.4;margin-bottom:12px;}
.scene-desc{font-size:15px;color:var(--c-muted);min-height:88px;}
.scene-media{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--c-line);}
.scene-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.scene-media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:linear-gradient(90deg,var(--c-primary) 0%,var(--c-primary) 62%,rgba(255,90,31,.15) 62%,rgba(255,90,31,.15) 100%);}

/* Posts */
.posts-top{display:grid;grid-template-columns:1.3fr 1fr;gap:24px;}
.posts-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.posts-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;}
.post-card{display:block;padding:0;overflow:hidden;}
.post-card .pc-media{width:100%;overflow:hidden;}
.post-card .pc-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.post-card:hover .pc-media img{transform:scale(1.04);}
.post-card .pc-body{padding:20px 22px 22px;}
.post-card h3{font-size:19px;line-height:1.45;margin:12px 0 8px;color:var(--c-ink);transition:color .25s ease-out;}
.post-card:hover h3{color:var(--c-primary);}
.post-card:hover{border-color:var(--c-primary);}
.post-card .pc-ex{font-size:14px;color:var(--c-muted);margin-bottom:12px;}
.post-card .pc-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums;}
.post-lg .pc-media{aspect-ratio:16/9;}
.post-lg h3{font-size:22px;}
.post-sm .pc-media{aspect-ratio:16/9;}
.post-sm .pc-body{padding:16px 18px 18px;}
.post-sm h3{font-size:16px;margin:10px 0 6px;}
.post-sm .pc-ex{font-size:13px;margin-bottom:8px;}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px;}
.empty-state i{font-size:26px;color:var(--c-muted);}
.empty-state p{font-size:14px;color:var(--c-muted);margin:0;}

/* Testimonials */
.testi-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;}
.testi-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);}
.testi-main{display:flex;flex-direction:column;justify-content:space-between;gap:20px;}
.testi-quote{font-size:24px;color:var(--c-primary);line-height:1;}
.testi-text{font-size:16px;color:var(--c-body);margin:0;}
.testi-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.testi-side .testi-card{padding:22px;}
.testi-side .testi-text{font-size:14px;color:var(--c-muted);}
.testi-person{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--c-muted);}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--c-ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;}
.avatar.green{background:var(--c-accent);}
.avatar.orange{background:var(--c-primary);}
.partners{margin-top:36px;display:grid;grid-template-columns:repeat(6,1fr);gap:14px;}
.partner{height:56px;border:1px solid var(--c-line);border-radius:var(--r-img);background:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;color:var(--c-muted);filter:grayscale(1);transition:all .25s ease-out;}
.partner:hover{filter:grayscale(0);color:var(--c-ink);border-color:var(--c-primary);}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;transition:border-color .25s ease-out;}
.faq-item.open{border-color:var(--c-primary);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:20px 22px 20px 24px;font-size:16px;font-weight:600;color:var(--c-ink);text-align:left;position:relative;cursor:pointer;}
.faq-q::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:2px;background:var(--c-primary);border-radius:2px;}
.faq-icon{width:24px;height:24px;border-radius:50%;background:var(--c-bg);color:var(--c-primary-dark);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;}
.faq-icon::before{content:"+";}
.faq-item.open .faq-icon::before{content:"−";}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease-out;}
.faq-a p{padding:0 24px 22px 24px;margin:0;font-size:15px;line-height:1.8;color:var(--c-muted);}

/* CTA band */
.cta-band{position:relative;background:var(--c-ink);color:#fff;overflow:hidden;}
.cta-band::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:repeating-linear-gradient(45deg,var(--c-primary) 0 10px,rgba(255,90,31,0) 10px 24px);}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 0;}
.cta-inner h2{color:#fff;font-size:30px;line-height:1.3;}
.cta-inner p{margin:10px 0 0;font-size:15px;color:rgba(255,255,255,.72);max-width:620px;}

/* Footer */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand b{color:#fff;font-size:17px;}
.footer-brand i{font-style:normal;font-size:12px;color:rgba(255,255,255,.55);display:block;letter-spacing:.06em;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin:0;}
.footer-col h4{font-size:14px;color:rgba(255,255,255,.55);font-weight:600;letter-spacing:.06em;margin-bottom:18px;}
.footer-col li{margin-bottom:12px;}
.footer-col li a{font-size:14px;color:rgba(255,255,255,.78);}
.footer-col li a:hover{color:var(--c-primary);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);}

/* Sticky bar */
.sticky-bar{position:fixed;left:0;right:0;bottom:0;height:64px;background:#fff;border-top:1px solid var(--c-line);box-shadow:0 -6px 18px rgba(16,20,24,.08);z-index:1040;display:flex;align-items:center;transform:translateY(105%);transition:transform .25s ease-out;}
.sticky-bar.show{transform:translateY(0);}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;}
.sticky-text{font-size:14px;color:var(--c-body);display:flex;align-items:center;gap:10px;}
.sticky-text i{color:var(--c-accent);}
.sticky-actions{display:flex;align-items:center;gap:12px;}
.sticky-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);background:#fff;color:var(--c-muted);font-size:14px;display:flex;align-items:center;justify-content:center;transition:all .25s ease-out;}
.sticky-close:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* Reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .posts-top{grid-template-columns:1fr;}
  .posts-row{grid-template-columns:repeat(2,1fr);}
  .partners{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .hamburger{display:flex;}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding-top:56px;padding-bottom:56px;}
  .hero{min-height:auto;}
  .hero h1{font-size:33px;}
  .points-grid{grid-template-columns:1fr;}
  .point-side{grid-template-columns:1fr 1fr;grid-template-rows:none;}
  .scene-wrap{grid-template-columns:1fr;gap:28px;}
  .scene-desc{min-height:0;}
  .testi-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item{border-top:1px solid var(--c-line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 0;}
  .section{padding:64px 0;}
  .section-sm{padding:52px 0;}
  .section-head h2{font-size:27px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .posts-row{grid-template-columns:1fr;}
  .posts-side{grid-template-rows:none;}
  .point-side{grid-template-columns:1fr;}
  .partners{grid-template-columns:repeat(2,1fr);}
  .testi-side{grid-template-rows:none;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:15px;}
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .section-head h2{font-size:24px;}
  .cta-inner h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .sticky-text span{display:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .trust-grid{grid-template-columns:1fr;}
  .tabs{overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px;}
  .tab{white-space:nowrap;}
}

/* roulang page: category1 */
:root{
  --c-primary:#FF5A1F;
  --c-primary-dark:#E24A12;
  --c-primary-soft:#FFEDE4;
  --c-accent:#12B981;
  --c-accent-soft:#E6F7F1;
  --c-ink:#101418;
  --c-body:#1B2126;
  --c-muted:#6B7580;
  --c-line:#E8EBEA;
  --c-bg:#F4F6F5;
  --c-card:#FFFFFF;
  --font-stack:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --shadow-card:0 1px 2px rgba(16,20,24,.05);
  --shadow-hover:0 10px 28px rgba(16,20,24,.09);
  --r-card:16px;
  --r-img:12px;
  --r-block:24px;
  --sec-space:88px;
  --bs-primary:#FF5A1F;
  --bs-link-color:#E24A12;
  --bs-link-hover-color:#FF5A1F;
  --bs-body-color:#1B2126;
  --bs-body-bg:#FFFFFF;
  --bs-border-color:#E8EBEA;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary-dark);text-decoration:none;transition:color .25s ease-out}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(255,90,31,.35);outline-offset:2px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
.no-scroll{overflow:hidden}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,20,24,.06)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg{flex:0 0 auto}
.brand-text b{
  display:block;
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  line-height:1.1;
  letter-spacing:.5px;
}
.brand-text i{
  display:block;
  font-style:normal;
  font-size:12px;
  color:var(--c-muted);
  line-height:1.2;
  letter-spacing:1px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  flex:1 1 auto;
  justify-content:center;
  height:68px;
}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  height:68px;
  padding:0 2px;
  font-size:15px;
  color:var(--c-body);
  white-space:nowrap;
  transition:color .25s ease-out;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:16px;
  transform:translateX(-50%);
  width:22px;
  height:3px;
  border-radius:999px;
  background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  height:40px;
  padding:0 14px;
  border-radius:999px;
  background:var(--c-bg);
  border:1px solid transparent;
  transition:border-color .25s ease-out,background .25s ease-out;
}
.nav-search:focus-within{border-color:var(--c-primary);background:#FFFFFF}
.nav-search i{font-size:13px;color:var(--c-muted)}
.nav-search input{
  width:100%;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  font-family:inherit;
  color:var(--c-body);
}
.btn-pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .25s ease-out,color .25s ease-out,border-color .25s ease-out,transform .25s ease-out,box-shadow .25s ease-out;
}
.btn-pill--primary{background:var(--c-primary);color:#FFFFFF}
.btn-pill--primary:hover{background:var(--c-primary-dark);color:#FFFFFF;transform:translateY(-1px)}
.btn-pill--outline{background:#FFFFFF;color:var(--c-primary-dark);border-color:var(--c-primary)}
.btn-pill--outline:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-pill--light{background:#FFFFFF;color:var(--c-ink)}
.btn-pill--light:hover{background:var(--c-primary-soft);color:var(--c-ink);transform:translateY(-1px)}
.header-cta{height:40px;padding:0 20px;font-size:14px}
.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:#FFFFFF;
  color:var(--c-ink);
  font-size:16px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.mobile-drawer{display:none}

/* ---------- cat hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--c-bg);
  padding:64px 0 68px;
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-70px;
  bottom:-50px;
  width:340px;
  height:220px;
  background:repeating-linear-gradient(45deg,rgba(255,90,31,.13) 0 10px,transparent 10px 22px);
  transform:skewX(-12deg);
  pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:1;max-width:860px}
.pill-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
}
.pill-tag--accent{background:var(--c-accent-soft);color:#0E8F68}
.cat-hero h1{
  margin:18px 0 14px;
  font-size:clamp(30px,4.6vw,44px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:.5px;
}
.cat-hero-lead{
  font-size:17px;
  color:var(--c-body);
  max-width:760px;
  margin-bottom:10px;
}
.cat-hero-text{
  font-size:15px;
  color:var(--c-muted);
  max-width:760px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ---------- stat strip ---------- */
.stat-strip{
  background:#FFFFFF;
  border-bottom:1px solid var(--c-line);
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  padding:30px 0;
}
.stat-item{
  border-left:3px solid var(--c-primary);
  padding-left:16px;
}
.stat-num{
  display:block;
  font-size:26px;
  font-weight:700;
  line-height:1.25;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
}
.stat-label{
  display:block;
  margin-top:4px;
  font-size:13.5px;
  color:var(--c-muted);
}

/* ---------- section head ---------- */
.section-block{padding:var(--sec-space) 0}
.section-block--soft{background:var(--c-bg)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.3;
  margin-bottom:12px;
}
.section-head p{color:var(--c-muted);font-size:16px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- feature rows ---------- */
.feature-list{margin-top:8px}
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:40px 0;
  border-top:1px dashed var(--c-line);
}
.feature-row:first-child{border-top:0;padding-top:0}
.feature-row--rev .feature-media{order:2}
.feature-media{position:relative;border-radius:var(--r-img);overflow:hidden}
.feature-media img{
  width:100%;
  height:auto;
  aspect-ratio:16 / 9;
  object-fit:cover;
  border-radius:var(--r-img);
  transition:transform .25s ease-out;
}
.feature-media::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:56%;
  height:4px;
  background:var(--c-primary);
  border-radius:0 4px 4px 0;
}
.feature-row:hover .feature-media img{transform:scale(1.04)}
.feature-body h3{
  font-size:clamp(19px,2.2vw,22px);
  line-height:1.4;
  margin:14px 0 12px;
  font-weight:600;
}
.feature-body p{color:var(--c-muted);font-size:15.5px;margin-bottom:16px}
.num-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:10px;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-primary-dark);
}
.text-link::after{content:"→";font-size:14px;transition:transform .25s ease-out}
.text-link:hover::after{transform:translateX(3px)}

/* ---------- search band ---------- */
.search-panel{
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  padding:36px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
  align-items:center;
}
.search-panel h2{font-size:24px;line-height:1.35;margin-bottom:10px}
.search-panel p{color:var(--c-muted);font-size:15px}
.search-form{display:flex;gap:12px;flex-wrap:wrap}
.search-form .field{flex:1 1 220px}
.search-form input{
  width:100%;
  height:44px;
  padding:0 16px;
  border-radius:var(--r-img);
  border:1px solid var(--c-line);
  background:#FFFFFF;
  font-size:15px;
  font-family:inherit;
  color:var(--c-body);
  outline:none;
  transition:border-color .25s ease-out,box-shadow .25s ease-out;
}
.search-form input::placeholder{color:#98A2AB}
.search-form input:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,90,31,.15);
}
.form-hint{
  grid-column:1 / -1;
  font-size:13px;
  color:var(--c-muted);
  margin:0;
}

/* ---------- faq ---------- */
.faq-list{
  max-width:860px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  background:#FFFFFF;
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  overflow:hidden;
  transition:border-color .25s ease-out,box-shadow .25s ease-out;
}
.faq-item.is-open{border-color:var(--c-primary);box-shadow:var(--shadow-card)}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px 18px 26px;
  border:0;
  background:transparent;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:16px;
  bottom:16px;
  width:2px;
  background:var(--c-primary);
  opacity:0;
  transition:opacity .25s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{
  position:relative;
  flex:0 0 24px;
  width:24px;
  height:24px;
  border-radius:50%;
  border:1px solid var(--c-line);
  transition:border-color .25s ease-out,background-color .25s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--c-muted);
  transition:opacity .25s ease-out,background-color .25s ease-out;
}
.faq-icon::before{width:10px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:10px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{border-color:var(--c-primary);background:var(--c-primary-soft)}
.faq-item.is-open .faq-icon::before{background:var(--c-primary-dark)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease-out;
}
.faq-a p{
  padding:0 26px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-muted);
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  background:var(--c-ink);
  color:#FFFFFF;
  padding:64px 0 70px;
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:6px;
  background:repeating-linear-gradient(45deg,var(--c-primary) 0 8px,rgba(255,90,31,.35) 8px 16px);
}
.cta-band-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{
  color:#FFFFFF;
  font-size:clamp(22px,2.8vw,30px);
  line-height:1.3;
  margin-bottom:10px;
}
.cta-band p{color:#B7C0C8;font-size:15px;max-width:620px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-ink);
  color:#9AA4AE;
  padding:64px 0 24px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand b{
  display:block;
  font-size:17px;
  color:#FFFFFF;
  line-height:1.1;
  letter-spacing:.5px;
}
.footer-brand i{
  display:block;
  font-style:normal;
  font-size:12px;
  color:#8C97A1;
  line-height:1.2;
  letter-spacing:1px;
}
.footer-col p{color:#9AA4AE;font-size:14px;line-height:1.75}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#C7CFD6;
  margin-bottom:14px;
}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#9AA4AE;font-size:14px}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:#7C868F;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .feature-row{gap:36px}
}
@media (max-width:991.98px){
  :root{--sec-space:64px}
  .main-nav{display:none}
  .nav-search{display:none}
  .menu-toggle{display:inline-flex}
  .header-inner{min-height:64px}
  .mobile-drawer{
    display:block;
    max-height:0;
    overflow:hidden;
    background:#FFFFFF;
    transition:max-height .3s ease-out;
  }
  .mobile-drawer.is-open{
    max-height:460px;
    border-top:1px solid var(--c-line);
  }
  .mobile-drawer a{
    display:block;
    height:48px;
    line-height:48px;
    padding:0 20px;
    font-size:15px;
    color:var(--c-body);
    border-bottom:1px dashed var(--c-line);
  }
  .mobile-drawer a.active{color:var(--c-primary);font-weight:600}
  .mobile-drawer .drawer-cta{padding:16px 20px}
  .mobile-drawer .drawer-cta .btn-pill{width:100%}
  .cat-hero{padding:52px 0 56px}
  .feature-row{
    grid-template-columns:1fr;
    gap:24px;
    padding:32px 0;
  }
  .feature-row--rev .feature-media{order:0}
  .search-panel{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  .stat-grid{grid-template-columns:1fr;gap:18px;padding:24px 0}
  .cat-hero h1{margin-top:14px}
  .cta-band{padding:48px 0 56px}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .cta-band-inner .btn-pill{width:100%}
  .section-head{margin-bottom:32px}
}
@media (max-width:575.98px){
  .header-cta .cta-text{display:none}
  .header-cta{width:40px;padding:0}
  .hero-actions .btn-pill{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --c-primary:#FF5A1F;
  --c-primary-dark:#E24A12;
  --c-primary-soft:#FFEDE4;
  --c-accent:#12B981;
  --c-accent-soft:#E6F7F1;
  --c-ink:#101418;
  --c-body:#1B2126;
  --c-muted:#6B7580;
  --c-line:#E8EBEA;
  --c-bg:#F4F6F5;
  --c-card:#FFFFFF;
  --r-card:16px;
  --r-img:12px;
  --r-block:24px;
  --sh-1:0 1px 2px rgba(16,20,24,.05);
  --sh-2:0 10px 28px rgba(16,20,24,.09);
  --shell:1200px;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--c-body);
  background:var(--c-bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
@media (min-width:1400px){.container{max-width:1320px}}
::selection{background:rgba(255,90,31,.18)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,20,24,.06)}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg{flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:700;color:var(--c-ink)}
.brand-text i{font-size:12px;font-style:normal;color:var(--c-muted);letter-spacing:2px}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:#38424A;padding:22px 0;transition:color .25s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:12px;width:0;height:3px;border-radius:3px;
  background:var(--c-primary);transform:translateX(-50%);transition:width .25s ease-out;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{width:22px}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  background:var(--c-bg);border:1px solid transparent;border-radius:999px;transition:border-color .25s ease-out,background .25s ease-out;
}
.nav-search:focus-within{background:#fff;border-color:var(--c-primary)}
.nav-search svg{flex:0 0 auto;stroke:var(--c-muted)}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--c-body);
}
.nav-search input::placeholder{color:#9AA4AD}
.btn-primary,.btn-outline,.btn-light,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;
  border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .25s ease-out,color .25s ease-out,border-color .25s ease-out,transform .25s ease-out,box-shadow .25s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:focus-visible,.btn-outline:focus-visible,.btn-light:focus-visible,.btn-ghost:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(255,90,31,.35)
}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary-dark)}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--c-ink)}
.btn-light:hover{background:#F0F3F2;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--c-line);color:#38424A}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.cta-sm{height:40px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:12px;background:#fff;
  cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform .25s ease-out,opacity .25s ease-out}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;padding:8px 0 20px}
.mobile-drawer .drawer-link{display:flex;align-items:center;height:48px;font-size:16px;color:#38424A;border-bottom:1px dashed var(--c-line)}
.mobile-drawer .drawer-link.active{color:var(--c-primary);font-weight:600}
.mobile-drawer .drawer-foot{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.mobile-drawer.is-open{display:block}

/* ---------- article head band ---------- */
.page-band{
  position:relative;overflow:hidden;background:var(--c-bg);border-bottom:1px solid var(--c-line);
  padding:26px 0 40px;
}
.page-band::after{
  content:"";position:absolute;right:-60px;bottom:-40px;width:320px;height:220px;
  background:repeating-linear-gradient(45deg,rgba(255,90,31,.10) 0 8px,transparent 8px 20px);
  pointer-events:none;
}
.breadcrumb-row{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);flex-wrap:wrap}
.breadcrumb-row a{color:var(--c-muted)}
.breadcrumb-row a:hover{color:var(--c-primary)}
.breadcrumb-row .sep{color:#C3CACF}
.breadcrumb-row .crumb-title{max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#4A545D}
.article-head{position:relative;z-index:1;margin-top:20px;max-width:860px}
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:13px;font-weight:600;
}
.article-title{
  font-size:40px;line-height:1.25;font-weight:700;margin:16px 0 18px;color:var(--c-ink);
}
.article-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--c-muted);padding-top:18px;border-top:1px solid var(--c-line)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--c-accent)}
.author-chip{display:inline-flex;align-items:center;gap:8px;color:#38424A;font-weight:600}
.author-chip .avatar{
  width:26px;height:26px;border-radius:50%;background:var(--c-ink);color:#fff;font-size:12px;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;
}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding:48px 0 0;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:56px}
}
.article-main{min-width:0}
.article-inline-figure{
  margin:0 0 28px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:#fff;
}
.article-inline-figure img{width:100%;height:300px;object-fit:cover}
.article-inline-figure figcaption{
  padding:10px 16px;font-size:13px;color:var(--c-muted);border-top:1px solid var(--c-line);
}
.article-body{max-width:760px;font-size:16px;line-height:1.8;color:var(--c-body);margin-top:32px}
.article-body p{margin:0 0 1.2em}
.article-body > p:first-of-type{font-size:17px;color:#242D33}
.article-body h2{
  position:relative;font-size:26px;line-height:1.4;font-weight:700;color:var(--c-ink);
  margin:40px 0 16px;padding-left:16px;scroll-margin-top:100px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--c-ink);margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--c-primary-soft);
  border-left:4px solid var(--c-primary);border-radius:0 12px 12px 0;color:#5A3626;font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px auto;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:10px}
.article-body ul,.article-body ol{padding-left:0;list-style:none;margin:0 0 1.2em}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:.6em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:oli}
.article-body ol li{counter-increment:oli}
.article-body ol li::before{
  content:counter(oli);position:absolute;left:0;top:0;color:var(--c-primary);font-weight:700;
  font-variant-numeric:tabular-nums;
}
.article-body a{color:var(--c-primary-dark);border-bottom:1px solid rgba(255,90,31,.35)}
.article-body a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.article-body strong{color:var(--c-ink);font-weight:700}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;min-width:520px}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body thead th{background:#EFF2F1;font-weight:600;color:var(--c-ink)}
.article-body tbody tr:nth-child(even){background:#FAFBFB}
.table-scroll{overflow-x:auto;border-radius:var(--r-img)}
.article-empty{
  margin-top:32px;padding:48px 24px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  text-align:center;
}
.article-empty p{font-size:16px;color:var(--c-muted);margin-bottom:18px}

/* ---------- article foot ---------- */
.foot-block{margin-top:40px;padding-top:28px;border-top:1px solid var(--c-line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:#4A545D;
  transition:border-color .25s ease-out,color .25s ease-out,transform .25s ease-out;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.tag-accent{background:var(--c-accent-soft);color:#0E8F68;border-color:transparent}
.pager{display:grid;grid-template-columns:1fr;gap:16px;margin-top:36px}
@media (min-width:768px){.pager{grid-template-columns:1fr 1fr}}
.pager-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px 22px;
  transition:border-color .25s ease-out,box-shadow .25s ease-out,transform .25s ease-out;
}
.pager-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.pager-card .kicker{font-size:12px;color:var(--c-muted);letter-spacing:1px;margin-bottom:8px;display:block}
.pager-card .ttl{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pager-card:hover .ttl{color:var(--c-primary)}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:48px 0 20px}
.related-head h2{font-size:24px;font-weight:700}
.related-head a{font-size:14px;color:var(--c-primary-dark);font-weight:600}
.related-head a:hover{color:var(--c-primary)}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1200px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:border-color .25s ease-out,box-shadow .25s ease-out,transform .25s ease-out;
}
.card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDF0EF}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body .ttl{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-body .ttl{color:var(--c-primary)}
.card-body .sum{
  font-size:14px;color:var(--c-muted);line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body .meta{margin-top:auto;font-size:13px;color:var(--c-muted)}
.back-row{margin-top:32px}

/* ---------- sidebar ---------- */
.sidebar{align-self:start}
@media (min-width:1200px){.sidebar{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px 22px}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-primary)}
.toc-list li a{
  display:block;font-size:14px;color:#4A545D;padding:9px 0 9px 12px;border-left:2px solid var(--c-line);
  transition:color .25s ease-out,border-color .25s ease-out;
}
.toc-list li a:hover{color:var(--c-primary);border-left-color:var(--c-primary)}
.mini-list li + li{border-top:1px dashed var(--c-line)}
.mini-list a{display:flex;gap:12px;padding:12px 0;align-items:flex-start}
.mini-list .mini-thumb{width:64px;height:44px;border-radius:8px;object-fit:cover;flex:0 0 auto;background:#EDF0EF}
.mini-list .mini-txt{font-size:14px;line-height:1.55;color:#38424A;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-list a:hover .mini-txt{color:var(--c-primary)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--c-bg);font-size:13px;color:#4A545D;transition:background .25s ease-out,color .25s ease-out;
}
.tag-cloud a:hover{background:var(--c-primary-soft);color:var(--c-primary-dark)}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--c-ink);color:#fff;margin-top:88px;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:repeating-linear-gradient(45deg,var(--c-primary) 0 14px,transparent 14px 28px);
}
.cta-band::before{
  content:"";position:absolute;right:-40px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,31,.30) 0%,rgba(255,90,31,0) 70%);
}
.cta-inner{
  position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:28px;padding:56px 0 62px;
}
.cta-inner h2{color:#fff;font-size:28px;font-weight:700;line-height:1.35;margin-bottom:10px}
.cta-inner p{color:#B9C1C7;font-size:15px;max-width:620px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#B9C1C7;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand span{display:flex;flex-direction:column;line-height:1.15}
.footer-brand b{font-size:17px;color:#fff;font-weight:700}
.footer-brand i{font-size:12px;font-style:normal;color:#8A939A;letter-spacing:2px}
.footer-col p{font-size:14px;line-height:1.8;color:#96A0A7;max-width:340px}
.footer-col h4{font-size:14px;color:#8A939A;font-weight:600;margin-bottom:16px;letter-spacing:1px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:#C6CDD2;transition:color .25s ease-out}
.footer-col ul a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7E888F;
}

/* ---------- sticky bar ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px rgba(16,20,24,.08);transform:translateY(110%);transition:transform .3s ease-out;
}
.sticky-bar.is-visible{transform:translateY(0)}
.sticky-inner{display:flex;align-items:center;gap:16px;height:64px}
.sticky-inner .sticky-text{font-size:14px;color:#4A545D;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sticky-close{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--c-line);background:#fff;color:var(--c-muted);
  font-size:16px;line-height:1;cursor:pointer;flex:0 0 auto;transition:color .25s ease-out,border-color .25s ease-out;
}
.sticky-close:hover{color:var(--c-primary);border-color:var(--c-primary)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-title{font-size:34px}
  .article-body{max-width:none}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{gap:16px}
  .site-footer{padding-top:48px}
  .cta-inner{padding:44px 0 50px}
  .cta-inner h2{font-size:24px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-title{font-size:27px;line-height:1.3}
  .page-band{padding:18px 0 28px}
  .article-layout{padding-top:32px;gap:36px}
  .article-body{font-size:16px;margin-top:24px}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-body h3{font-size:18px}
  .article-inline-figure img{height:200px}
  .cta-band{margin-top:56px}
  .sticky-inner .sticky-text{font-size:13px}
  .cta-sm{display:none}
  .btn-primary,.btn-outline,.btn-light{padding:0 20px}
}
@media (max-width:575px){
  .breadcrumb-row .crumb-title{max-width:22ch}
  .article-meta{gap:12px}
  .sticky-inner .sticky-text{display:none}
  .sticky-inner .btn-primary{flex:1}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .sticky-bar{transform:none}
}

/* roulang page: category2 */
:root{
  --c-primary:#FF5A1F;
  --c-primary-dark:#E24A12;
  --c-primary-soft:#FFEDE4;
  --c-accent:#12B981;
  --c-accent-soft:#E6F7F1;
  --c-ink:#101418;
  --c-body:#1B2126;
  --c-muted:#6B7580;
  --c-line:#E8EBEA;
  --c-bg:#F4F6F5;
  --c-card:#FFFFFF;
  --r-card:16px;
  --r-img:12px;
  --r-block:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,20,24,.05);
  --sh-2:0 10px 28px rgba(16,20,24,.09);
  --sp-section:88px;
  --bs-primary:#FF5A1F;
  --bs-primary-rgb:255,90,31;
  --bs-body-color:#1B2126;
  --bs-body-bg:#F4F6F5;
  --bs-link-color:#FF5A1F;
  --bs-link-hover-color:#E24A12;
  --bs-border-color:#E8EBEA;
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::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","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  padding-bottom:0;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s ease-out;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}

.num,.time,[data-num]{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ============ 通用按钮 ============ */
.btn-main,.btn-ghost,.btn-light{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .25s ease-out,color .25s ease-out,border-color .25s ease-out,transform .25s ease-out,box-shadow .25s ease-out;
  white-space:nowrap;
}
.btn-main{
  background:var(--c-primary);
  color:#fff;
  border-color:var(--c-primary);
}
.btn-main:hover{
  background:var(--c-primary-dark);
  border-color:var(--c-primary-dark);
  color:#fff;
  transform:translateY(-1px);
}
.btn-main:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(255,90,31,.35);
}
.btn-ghost{
  background:#fff;
  color:var(--c-primary);
  border-color:var(--c-primary);
}
.btn-ghost:hover{
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  border-color:var(--c-primary-dark);
  transform:translateY(-1px);
}
.btn-ghost:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(255,90,31,.35);
}
.btn-light{
  background:#fff;
  color:var(--c-ink);
  border-color:#fff;
}
.btn-light:hover{
  background:#F1F3F2;
  color:var(--c-ink);
  transform:translateY(-1px);
}
.btn-outline-light-2{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.7);
  transition:background-color .25s ease-out,border-color .25s ease-out,transform .25s ease-out;
}
.btn-outline-light-2:hover{
  background:rgba(255,255,255,.12);
  border-color:#fff;
  color:#fff;
  transform:translateY(-1px);
}
.btn-outline-light-2:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(255,255,255,.4);
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease-out;
}
.site-header.is-scrolled{
  box-shadow:0 6px 18px rgba(16,20,24,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:68px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.brand-text b{
  font-size:17px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.5px;
}
.brand-text i{
  font-style:normal;
  font-size:12px;
  color:var(--c-muted);
  letter-spacing:1px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-right:auto;
}
.main-nav .nav-link{
  position:relative;
  display:inline-block;
  padding:22px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
  border-radius:0;
  background:none;
}
.main-nav .nav-link:hover{
  color:var(--c-primary);
  background:none;
}
.main-nav .nav-link.active{
  color:var(--c-primary);
  font-weight:700;
}
.main-nav .nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:14px;
  height:3px;
  border-radius:3px;
  background:var(--c-primary);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.search-box{
  position:relative;
  width:220px;
  height:40px;
  display:flex;
  align-items:center;
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  padding:0 14px;
  transition:border-color .25s ease-out,box-shadow .25s ease-out;
}
.search-box:focus-within{
  border-color:var(--c-primary);
  box-shadow:0 0 0 2px rgba(255,90,31,.14);
}
.search-box i{
  font-size:13px;
  color:var(--c-muted);
  margin-right:8px;
}
.search-box input{
  flex:1;
  min-width:0;
  height:38px;
  border:none;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--c-body);
}
.search-box input::placeholder{color:var(--c-muted);}
.hamburger{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  font-size:16px;
  cursor:pointer;
  transition:border-color .25s ease-out,color .25s ease-out;
}
.hamburger:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;
  inset:68px 0 0 0;
  z-index:1029;
  background:#fff;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease-out,transform .25s ease-out,visibility .25s;
  display:flex;
  flex-direction:column;
  padding:8px 20px 0;
  overflow-y:auto;
}
.mobile-drawer.is-open{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.mobile-drawer a.drawer-link{
  display:flex;
  align-items:center;
  height:48px;
  font-size:16px;
  color:var(--c-body);
  border-bottom:1px dashed var(--c-line);
}
.mobile-drawer a.drawer-link.active{
  color:var(--c-primary);
  font-weight:700;
}
.mobile-drawer .drawer-search{
  margin:16px 0 4px;
  height:44px;
  width:100%;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:var(--c-bg);
  padding:0 14px;
  font-size:15px;
  outline:none;
}
.mobile-drawer .drawer-search:focus{
  border-color:var(--c-primary);
}
.mobile-drawer .drawer-cta{
  margin:16px 0 28px;
}

/* ============ 视觉带 Hero ============ */
.band-hero{
  position:relative;
  background-image:linear-gradient(90deg,rgba(16,20,24,.88) 0%,rgba(16,20,24,.66) 52%,rgba(16,20,24,.38) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.band-hero::after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:-70px;
  width:320px;
  height:240px;
  background:repeating-linear-gradient(45deg,rgba(255,90,31,.55) 0 10px,transparent 10px 26px);
  opacity:.35;
  pointer-events:none;
}
.band-hero-inner{
  position:relative;
  z-index:2;
  padding:76px 0 72px;
  max-width:760px;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:18px;
}
.breadcrumb-line a{
  color:rgba(255,255,255,.72);
}
.breadcrumb-line a:hover{color:#fff;}
.badge-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:18px;
}
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.2px;
}
.badge-pill.on-dark{
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.24);
  color:#fff;
}
.badge-pill.primary{
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
}
.badge-pill.accent{
  background:var(--c-accent-soft);
  color:#0E8F68;
}
.band-hero h1{
  font-size:42px;
  line-height:1.25;
  color:#fff;
  font-weight:700;
  letter-spacing:.2px;
}
.band-hero .hero-sub{
  margin-top:18px;
  font-size:16.5px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
  max-width:700px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:32px;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-meta .meta-item span{
  display:block;
  font-size:12.5px;
  color:rgba(255,255,255,.66);
  letter-spacing:.5px;
}
.hero-meta .meta-item b{
  display:block;
  margin-top:4px;
  font-size:22px;
  font-weight:700;
  color:#fff;
  font-variant-numeric:tabular-nums;
}
.hero-meta .meta-item b em{
  font-style:normal;
  font-size:13px;
  color:var(--c-primary);
  margin-left:4px;
}

/* ============ 板块通用 ============ */
.section{
  padding:var(--sp-section) 0;
}
.section-alt{
  background:#fff;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head .sh-text{max-width:720px;}
.section-eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--c-primary);
  margin-bottom:12px;
}
.section-head h2{
  font-size:31px;
  line-height:1.3;
}
.section-head p{
  margin-top:12px;
  font-size:15.5px;
  color:var(--c-muted);
  line-height:1.85;
}
.link-more{
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.link-more:hover{color:var(--c-primary-dark);}
.link-more i{font-size:12px;}

/* ============ 说明条 ============ */
.intro-strip{
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.intro-strip-inner{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
}
.intro-item{
  padding:28px 26px 28px 0;
  border-left:3px solid var(--c-primary);
  padding-left:20px;
  margin:26px 0;
}
.intro-item + .intro-item{
  margin-left:0;
}
.intro-item h3{
  font-size:17px;
  font-weight:700;
  margin-bottom:8px;
}
.intro-item p{
  font-size:14.5px;
  color:var(--c-muted);
  line-height:1.8;
}

/* ============ 卡片网格 2x3 ============ */
.cards-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.topic-card{
  display:flex;
  flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .25s ease-out,box-shadow .25s ease-out,transform .25s ease-out;
}
.topic-card:hover{
  border-color:var(--c-primary);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.topic-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--c-bg);
}
.topic-card .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .25s ease-out;
}
.topic-card:hover .thumb img{
  transform:scale(1.04);
}
.topic-card .thumb .num-block{
  position:absolute;
  left:14px;
  top:14px;
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--c-primary);
  color:#fff;
  font-size:15px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  font-variant-numeric:tabular-nums;
  box-shadow:0 4px 12px rgba(16,20,24,.18);
}
.topic-card .card-body-in{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.topic-card h3{
  font-size:20px;
  line-height:1.4;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.topic-card p{
  font-size:14.5px;
  color:var(--c-muted);
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.topic-card .card-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--c-line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.topic-card .card-foot .tag{
  font-size:12.5px;
  font-weight:600;
  color:#0E8F68;
  background:var(--c-accent-soft);
  border-radius:var(--r-pill);
  padding:3px 12px;
}
.topic-card .card-foot .go{
  font-size:13.5px;
  font-weight:600;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:5px;
}
.topic-card:hover .card-foot .go{color:var(--c-primary-dark);}

/* ============ 步骤条 ============ */
.steps-wrap{
  margin-top:64px;
  padding-top:56px;
  border-top:1px solid var(--c-line);
}
.steps-title{
  font-size:22px;
  margin-bottom:8px;
}
.steps-sub{
  font-size:15px;
  color:var(--c-muted);
  margin-bottom:36px;
  max-width:760px;
}
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
}
.step{
  position:relative;
  padding:0 32px 0 0;
}
.step + .step{
  padding-left:32px;
  border-left:1px solid var(--c-line);
}
.step .step-no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:14px;
  background:var(--c-primary-soft);
  color:var(--c-primary-dark);
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h4{
  font-size:18px;
  margin-bottom:10px;
}
.step p{
  font-size:14.5px;
  color:var(--c-muted);
  line-height:1.8;
  max-width:300px;
}
.step .step-line{
  position:absolute;
  top:22px;
  right:-1px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-primary);
}

/* ============ FAQ ============ */
.faq-wrap{
  max-width:860px;
  margin:0 auto;
}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .25s ease-out;
}
.faq-item.is-open{
  border-color:var(--c-primary);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  background:none;
  border:none;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  cursor:pointer;
  position:relative;
  padding-left:26px;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:12px;
  top:22px;
  bottom:22px;
  width:2px;
  border-radius:2px;
  background:var(--c-primary);
}
.faq-q .fx{
  flex-shrink:0;
  width:26px;
  height:26px;
  border-radius:8px;
  background:var(--c-bg);
  color:var(--c-primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  transition:background-color .25s ease-out,color .25s ease-out;
}
.faq-item.is-open .fx{
  background:var(--c-primary);
  color:#fff;
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s ease-out;
}
.faq-a-in{
  padding:0 22px 22px 26px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-muted);
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  background:var(--c-ink);
  color:#fff;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:6px;
  background:repeating-linear-gradient(45deg,var(--c-primary) 0 14px,transparent 14px 30px);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:64px 0 70px;
}
.cta-inner h2{
  font-size:29px;
  color:#fff;
  line-height:1.3;
}
.cta-inner p{
  margin-top:12px;
  font-size:15.5px;
  color:rgba(255,255,255,.72);
  max-width:640px;
  line-height:1.85;
}
.cta-actions{
  display:flex;
  gap:14px;
  flex-shrink:0;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:rgba(255,255,255,.7);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand span{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}
.footer-brand b{
  font-size:16px;
  color:#fff;
  font-weight:700;
  letter-spacing:.5px;
}
.footer-brand i{
  font-style:normal;
  font-size:12px;
  color:rgba(255,255,255,.55);
  letter-spacing:1px;
}
.footer-col p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  max-width:320px;
}
.footer-col h4{
  font-size:14px;
  color:rgba(255,255,255,.5);
  font-weight:600;
  letter-spacing:.5px;
  margin-bottom:18px;
}
.footer-col ul li{
  margin-bottom:12px;
}
.footer-col ul li a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .25s ease-out;
}
.footer-col ul li a:hover{
  color:var(--c-primary);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:1040;
  height:64px;
  background:#fff;
  border-top:1px solid var(--c-line);
  box-shadow:0 -8px 24px rgba(16,20,24,.08);
  display:none;
  align-items:center;
  transform:translateY(110%);
  transition:transform .3s ease-out;
}
.sticky-bar.is-visible{
  transform:translateY(0);
}
.sticky-bar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:64px;
}
.sticky-bar p{
  font-size:14.5px;
  color:var(--c-body);
  font-weight:600;
}
.sticky-bar .sb-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.sticky-bar .sb-close{
  width:34px;
  height:34px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-muted);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:color .25s ease-out,border-color .25s ease-out;
}
.sticky-bar .sb-close:hover{
  color:var(--c-primary);
  border-color:var(--c-primary);
}
body.has-sticky-pad{
  padding-bottom:64px;
}

/* ============ 进场动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s ease-out,transform .5s ease-out;
}
.reveal.is-in{
  opacity:1;
  transform:none;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .cards-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-grid .footer-col:last-child{grid-column:span 3;}
  .footer-grid .footer-col:last-child ul{display:flex;flex-wrap:wrap;gap:24px;}
  .footer-grid .footer-col:last-child ul li{margin-bottom:0;}
}

@media (max-width:991px){
  :root{--sp-section:64px;}
  .main-nav{display:none;}
  .search-box{display:none;}
  .hamburger{display:flex;}
  .header-inner{gap:16px;justify-content:space-between;}
  .band-hero-inner{padding:56px 0 56px;}
  .band-hero h1{font-size:34px;}
  .intro-strip-inner{grid-template-columns:1fr;}
  .intro-item{margin:0;padding:22px 0 22px 18px;}
  .intro-item + .intro-item{border-top:1px solid var(--c-line);}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{padding:0 0 28px 0;}
  .step + .step{padding-left:0;border-left:none;border-top:1px solid var(--c-line);padding-top:28px;}
  .step .step-line{display:none;}
  .step p{max-width:100%;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:52px 0 58px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-grid .footer-col:last-child{grid-column:auto;}
  .footer-grid .footer-col:last-child ul{display:block;}
  .footer-grid .footer-col:last-child ul li{margin-bottom:12px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}

@media (max-width:767px){
  :root{--sp-section:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .band-hero-inner{padding:44px 0 46px;}
  .band-hero h1{font-size:28px;}
  .band-hero .hero-sub{font-size:15.5px;}
  .hero-actions{width:100%;}
  .hero-actions .btn-main,.hero-actions .btn-outline-light-2{flex:1 1 auto;justify-content:center;}
  .hero-meta{gap:20px 28px;}
  .cards-grid{grid-template-columns:1fr;}
  .section-head h2{font-size:24px;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn-main,.cta-actions .btn-outline-light-2{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .sticky-bar p{font-size:13.5px;}
  .sticky-bar p .hide-xs{display:none;}
}

@media (max-width:520px){
  .band-hero h1{font-size:25px;line-height:1.3;}
  .badge-pill{font-size:12px;padding:0 12px;}
  .hero-meta .meta-item b{font-size:19px;}
  .topic-card .card-body-in{padding:18px 18px 20px;}
  .faq-q{font-size:15px;padding:18px 18px 18px 24px;}
  .faq-q::before{top:20px;bottom:20px;}
  .faq-a-in{padding:0 18px 18px 24px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --c-primary:#FF5A1F;
  --c-primary-dark:#E24A12;
  --c-primary-soft:#FFEDE4;
  --c-accent:#12B981;
  --c-accent-soft:#E6F7F1;
  --c-accent-deep:#0E8F68;
  --c-ink:#101418;
  --c-body:#1B2126;
  --c-muted:#6B7580;
  --c-line:#E8EBEA;
  --c-bg:#F4F6F5;
  --c-card:#FFFFFF;
  --r-card:16px;
  --r-img:12px;
  --r-block:24px;
  --sh-1:0 1px 2px rgba(16,20,24,.05);
  --sh-2:0 10px 28px rgba(16,20,24,.09);
  --ease:ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-main{background:var(--c-primary);color:#fff;}
.btn-main:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-ink);}
.btn-light:hover{background:#F0F2F1;color:var(--c-ink);transform:translateY(-1px);}
.btn-main:focus-visible,.btn-ghost:focus-visible,.btn-light:focus-visible,.nav-link:focus-visible,.faq-q:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(255,90,31,.35);
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(16,20,24,.06);}
.header-inner{display:flex;align-items:center;gap:28px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.01em;}
.brand-text i{font-size:12px;font-style:normal;color:var(--c-muted);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-body);padding:6px 2px;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:3px;border-radius:3px;
  background:var(--c-primary);transform:translateX(-50%);transition:width .25s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link.active{color:var(--c-primary);font-weight:700;}
.nav-link.active::after{width:22px;}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  background:var(--c-bg);border:1px solid transparent;border-radius:999px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-search:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 2px rgba(255,90,31,.14);}
.nav-search svg{flex-shrink:0;}
.nav-search input{
  width:100%;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-body);
}
.nav-search input::placeholder{color:var(--c-muted);}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:12px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.nav-drawer{
  display:none;position:fixed;inset:69px 0 0 0;background:#fff;z-index:1029;
  padding:12px 20px 96px;overflow-y:auto;
}
.nav-drawer.open{display:block;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;height:48px;
  font-size:16px;color:var(--c-body);border-bottom:1px dashed var(--c-line);
}
.drawer-link.active{color:var(--c-primary);font-weight:700;}
.drawer-cta{position:fixed;left:0;right:0;bottom:0;padding:12px 20px;background:#fff;border-top:1px solid var(--c-line);}
.drawer-cta .btn-main{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,20,24,.92) 0%,rgba(16,20,24,.72) 52%,rgba(16,20,24,.42) 100%);
}
.hero-stripes{
  position:absolute;right:-60px;bottom:-70px;width:280px;height:280px;opacity:.32;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(255,90,31,.85) 0 10px,transparent 10px 26px);
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 360px;
  gap:48px;align-items:center;padding:72px 0 76px;
}
.hero h1{
  color:#fff;font-size:42px;line-height:1.25;font-weight:700;letter-spacing:.01em;
  max-width:640px;
}
.hero-sub{
  color:rgba(255,255,255,.82);font-size:16px;line-height:1.8;margin-top:18px;max-width:620px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-panel{
  background:rgba(255,255,255,.97);border-radius:var(--r-block);padding:24px;
  box-shadow:0 18px 40px rgba(0,0,0,.22);
}
.hero-panel h2{font-size:16px;font-weight:700;color:var(--c-ink);margin-bottom:16px;}
.panel-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px dashed var(--c-line);
}
.panel-row:last-child{border-bottom:0;padding-bottom:0;}
.panel-row span{font-size:14px;color:var(--c-muted);}
.panel-row b{font-size:18px;color:var(--c-primary);font-weight:700;font-variant-numeric:tabular-nums;}

/* ---------- 指标条 ---------- */
.metrics{background:#fff;border-bottom:1px solid var(--c-line);}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.metric{
  position:relative;padding:26px 24px 26px 30px;border-right:1px dashed var(--c-line);
}
.metric:last-child{border-right:0;}
.metric::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:3px;background:var(--c-primary);
}
.metric b{
  display:block;font-size:26px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.3;
}
.metric span{font-size:13px;color:var(--c-muted);}
.metric em{font-style:normal;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:12px;font-weight:700;letter-spacing:.06em;
}
.eyebrow.accent{background:var(--c-accent-soft);color:var(--c-accent-deep);}
.section-head h2{font-size:31px;line-height:1.3;font-weight:700;margin-top:14px;}
.section-sub{font-size:15px;color:var(--c-muted);margin-top:14px;max-width:760px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-accent));
}
.tl-item{position:relative;padding-left:56px;margin-bottom:28px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  position:absolute;left:8px;top:26px;width:16px;height:16px;border-radius:50%;
  background:var(--c-primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--c-primary-soft);
}
.tl-item:nth-child(even) .tl-dot{background:var(--c-accent);box-shadow:0 0 0 2px var(--c-accent-soft);}
.tl-body{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:26px;align-items:center;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.tl-body:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-dark);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.tl-body h3{font-size:21px;line-height:1.4;font-weight:600;}
.tl-body p{font-size:15px;color:var(--c-muted);margin-top:10px;max-width:760px;}
.tl-figure{margin:0;border-radius:var(--r-img);overflow:hidden;position:relative;}
.tl-figure img{width:100%;height:auto;object-fit:cover;transition:transform .25s var(--ease);}
.tl-body:hover .tl-figure img{transform:scale(1.04);}
.tl-figure::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:4px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}

/* ---------- 常见问题 ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:12px;margin-bottom:12px;overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item:hover{border-color:#D8DEDC;}
.faq-item.open{border-color:var(--c-primary);box-shadow:var(--sh-1);}
.faq-q{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:18px 20px 18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.faq-q::before{
  content:"";position:absolute;left:10px;top:22px;bottom:22px;width:2px;border-radius:2px;background:var(--c-primary);
}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease);}
.faq-a-inner{padding:0 22px 20px 32px;font-size:15px;line-height:1.8;color:var(--c-muted);}
.faq-a-inner p{max-width:760px;}

/* ---------- 相关分类 ---------- */
.related{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-block);padding:34px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.related h2{font-size:22px;font-weight:600;}
.related p{font-size:14px;color:var(--c-muted);margin-top:8px;}
.chip-group{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;align-items:center;height:42px;padding:0 20px;border-radius:999px;
  background:#fff;border:1px solid var(--c-line);font-size:14px;font-weight:600;color:var(--c-ink);
  transition:border-color .25s var(--ease),color .25s var(--ease),transform .25s var(--ease),background-color .25s var(--ease);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.chip.solid{background:var(--c-accent-soft);border-color:transparent;color:var(--c-accent-deep);}
.chip.solid:hover{background:#D8F2E7;color:var(--c-accent-deep);}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;background:var(--c-ink);overflow:hidden;padding:64px 0 70px;}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:repeating-linear-gradient(45deg,var(--c-primary) 0 14px,var(--c-primary-dark) 14px 28px);
}
.cta-band::before{
  content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;opacity:.16;
  background:repeating-linear-gradient(45deg,#fff 0 8px,transparent 8px 20px);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#fff;font-size:30px;line-height:1.3;max-width:620px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;margin-top:12px;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.7);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand span{display:flex;flex-direction:column;line-height:1.2;}
.footer-brand b{color:#fff;font-size:17px;font-weight:700;}
.footer-brand i{font-style:normal;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.14em;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.88);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .hero-inner{grid-template-columns:minmax(0,1fr) 330px;gap:36px;}
  .section{padding:72px 0;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;padding:56px 0 60px;}
  .hero h1{font-size:34px;}
  .hero-panel{max-width:520px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .metric{border-right:0;border-bottom:1px dashed var(--c-line);}
  .metric:nth-child(odd){border-right:1px dashed var(--c-line);}
  .metric:nth-last-child(-n+2){border-bottom:0;}
  .tl-body{grid-template-columns:1fr;gap:18px;}
  .tl-figure{max-width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:27px;}
}
@media (min-width:576px) and (max-width:991px){
  .nav-cta{display:inline-flex;}
}
@media (max-width:575px){
  .nav-cta{display:none;}
  .hero h1{font-size:28px;}
  .hero-inner{padding:44px 0 48px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .metrics-grid{grid-template-columns:1fr 1fr;}
  .metric{padding:20px 16px 20px 22px;}
  .metric b{font-size:21px;}
  .tl-item{padding-left:40px;}
  .timeline::before{left:11px;}
  .tl-dot{left:4px;top:24px;}
  .tl-body{padding:20px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:23px;}
  .cta-inner h2{font-size:23px;}
  .cta-inner .btn-main{width:100%;}
  .related{padding:24px;}
  .chip-group{width:100%;}
  .chip{flex:1 1 auto;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}