/* roulang page: index */
:root{
  --brand-700:#0E3B33;
  --brand-900:#0B1A17;
  --brand-500:#175B4C;
  --lime:#CDF24A;
  --flame:#F0562A;
  --paper:#F7F6F1;
  --paper-2:#FFFFFF;
  --line:#E3E1D8;
  --text:#12211E;
  --muted:#6B7A75;
  --radius-card:10px;
  --radius-img:12px;
  --radius-btn:8px;
  --shadow-1:0 1px 2px rgba(11,26,23,.05);
  --shadow-2:0 14px 34px -14px rgba(11,26,23,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:116px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .28s var(--ease);}
a:hover{color:var(--brand-500);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--brand-900);line-height:1.2;}
p{margin:0 0 1.1em;max-width:760px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px;}

.container,.container-lg,.container-xl,.container-fluid{
  width:100%;
  max-width:1240px;
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 22px -14px rgba(11,26,23,.35);}
.brand-row{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  border-radius:9px;
  background:var(--brand-700);
  color:var(--lime);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:17px;
  letter-spacing:-.03em;
}
.brand-text{
  font-size:21px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--brand-900);
  white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  transition:background .28s var(--ease),color .28s var(--ease);
}
.main-nav a:hover{background:#EFF1EA;color:var(--brand-700);}
.main-nav a.active{color:var(--brand-700);font-weight:700;}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  background:var(--paper-2);
  border-radius:8px;
  color:var(--brand-900);
  cursor:pointer;
  transition:border-color .28s var(--ease),background .28s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-700);background:#F1F3EC;}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:0 20px;
  background:var(--brand-700);
  color:#F7F6F1;
  font-weight:700;
  font-size:15px;
  border:1px solid var(--brand-700);
  border-radius:var(--radius-btn);
  cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.btn-brand:hover{background:var(--lime);color:var(--brand-900);border-color:var(--lime);transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:0 20px;
  background:transparent;
  color:var(--brand-900);
  font-weight:700;
  font-size:15px;
  border:1px solid var(--brand-900);
  border-radius:var(--radius-btn);
  cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease);
}
.btn-ghost:hover{background:var(--brand-900);color:#F7F6F1;}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;
  padding:0 24px;
  background:var(--brand-900);
  color:var(--lime);
  font-weight:800;
  font-size:15px;
  border:1px solid var(--brand-900);
  border-radius:var(--radius-btn);
  cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease);
}
.btn-lime:hover{background:#16302A;color:var(--lime);}
.header-search{
  display:none;
  align-items:center;
  gap:8px;
  border-bottom:1px solid var(--line);
  padding:0 4px;
  height:44px;
}
.header-search.open{display:flex;}
.header-search input{
  border:0;background:transparent;outline:none;
  height:42px;width:170px;font-size:15px;color:var(--text);
}
.header-search input::placeholder{color:var(--muted);}
.burger{display:none;}

/* 频道 Tabs 行 */
.channel-row{
  height:46px;
  display:flex;
  align-items:center;
  gap:8px;
  border-top:1px solid var(--line);
  overflow-x:auto;
  scroll-snap-type:x proximity;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-row::-webkit-scrollbar{display:none;}
.channel-row .pill{
  scroll-snap-align:start;
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--brand-700);
  background:transparent;
  white-space:nowrap;
  transition:background .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease);
}
.channel-row .pill:hover{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700);}
.channel-row .pill.active{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700);font-weight:700;}

/* ============ 通用板块 ============ */
.section{padding:104px 0;}
.section-sm{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:Inter,system-ui,sans-serif;
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-weight:700;
  color:var(--brand-500);
}
.eyebrow::before{content:"";width:22px;height:3px;background:var(--lime);display:block;border-radius:2px;}
.badge-lime{
  display:inline-flex;align-items:center;
  height:32px;
  padding:0 14px;
  border:1px solid var(--lime);
  background:rgba(205,242,74,.16);
  color:var(--brand-700);
  font-size:13px;
  font-weight:700;
  border-radius:999px;
}
.badge-tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 10px;
  border-radius:999px;
  background:#EFF1EA;
  color:var(--brand-700);
  font-size:12px;font-weight:700;
  font-family:Inter,system-ui,sans-serif;
  letter-spacing:.04em;
}
h1{font-size:clamp(34px,5vw,62px);line-height:1.12;letter-spacing:-.02em;}
.section-title{font-size:clamp(26px,3vw,40px);line-height:1.2;}
.section-lead{font-size:17px;color:var(--muted);max-width:720px;margin-top:18px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* Hero */
.hero{padding:72px 0 88px;background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);}
.hero h1{margin-top:22px;max-width:15em;}
.hero .lead{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  margin-top:22px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:44px;
  margin-top:48px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.stat-num{
  font-family:Inter,system-ui,sans-serif;
  font-size:36px;
  font-weight:800;
  color:var(--brand-700);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat-num span{font-size:18px;margin-left:2px;}
.hero-stats .stat-num{font-size:34px;}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-2);
}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  border-radius:var(--radius-img);
  background-image:linear-gradient(rgba(11,26,23,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(11,26,23,.08) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.hero-chip{
  position:absolute;
  right:16px;bottom:16px;
  background:var(--brand-900);
  color:var(--lime);
  font-family:Inter,system-ui,sans-serif;
  font-size:12px;
  letter-spacing:.06em;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid rgba(205,242,74,.45);
}

/* 痛点清单 */
.pain-list{border-top:1px solid var(--line);margin-top:44px;}
.pain-item{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:24px;
  padding:30px 0;
  border-bottom:1px solid var(--line);
}
.pain-index{
  font-family:Inter,system-ui,sans-serif;
  font-size:48px;
  font-weight:800;
  color:#CFD6CE;
  line-height:1;
}
.pain-body{border-left:3px solid var(--brand-700);padding-left:22px;}
.pain-body h3{font-size:21px;margin-bottom:8px;}
.pain-body p{color:var(--muted);margin-bottom:0;}
.pain-body .mark{color:var(--flame);font-weight:700;}

/* 交错图文 */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.feature-row + .feature-row{margin-top:96px;}
.feature-row.reverse .feature-media{order:2;}
.feature-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow-1);
  transition:transform .42s var(--ease);
}
.feature-media:hover img{transform:scale(1.02);}
.feature-body h3{font-size:24px;margin-bottom:16px;}
.feature-body p{color:var(--muted);}
.point-list{margin-top:20px;display:grid;gap:12px;}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;}
.point-list li::before{
  content:"";width:10px;height:10px;flex:0 0 10px;
  background:var(--lime);border-radius:2px;margin-top:10px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:22px;font-weight:700;font-size:15px;
  color:var(--brand-700);
  border-bottom:2px solid transparent;
  transition:border-color .3s var(--ease),gap .3s var(--ease);
}
.link-arrow:hover{border-color:var(--lime);gap:12px;}

/* 成果区深色 */
.dark-band{background:var(--brand-900);color:#EDEFE9;padding:96px 0;}
.dark-band h2{color:#FFFFFF;}
.dark-band .section-lead{color:rgba(237,239,233,.72);}
.dark-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:rgba(205,242,74,.18);
  border:1px solid rgba(205,242,74,.18);
  margin-top:52px;
}
.dark-cell{
  background:var(--brand-900);
  padding:34px 28px;
}
.dark-cell .stat-num{color:var(--lime);font-size:40px;}
.dark-cell .stat-label{color:rgba(237,239,233,.66);}
.dark-note{margin-top:22px;font-size:13px;color:rgba(237,239,233,.55);}

/* 证言 */
.quotes{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:8px 4px 24px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.quote-card{
  scroll-snap-align:start;
  flex:0 0 calc((100% - 40px)/2.5);
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 28px;
  box-shadow:var(--shadow-1);
  transition:transform .34s var(--ease),box-shadow .34s var(--ease);
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.quote-card blockquote{margin:0;font-size:16.5px;line-height:1.9;color:var(--text);}
.quote-card blockquote::before{
  content:"“";
  display:block;
  font-family:Georgia,serif;
  font-size:52px;
  line-height:.4;
  color:var(--lime);
  margin-bottom:18px;
}
.quote-who{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);}
.avatar{
  width:44px;height:44px;border-radius:50%;
  background:var(--brand-700);color:var(--lime);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;flex:0 0 44px;
}
.quote-who .name{font-weight:700;font-size:15px;}
.quote-who .role{font-size:13px;color:var(--muted);}

/* 资讯列表 */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.filter-row .pill{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:var(--paper-2);
  font-size:14px;color:var(--brand-700);
  transition:background .28s var(--ease),color .28s var(--ease),border-color .28s var(--ease);
}
.filter-row .pill:hover,.filter-row .pill.active{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700);}
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:36px;margin-top:40px;}
.news-feature{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .34s var(--ease),box-shadow .34s var(--ease);
  height:100%;
  display:flex;flex-direction:column;
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.news-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .42s var(--ease);}
.news-feature:hover img{transform:scale(1.03);}
.news-feature .body{padding:26px 28px 30px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-feature h3{font-size:22px;}
.news-feature .summary{color:var(--muted);font-size:15.5px;margin:0;}
.meta-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);font-family:Inter,system-ui,sans-serif;}
.news-side{display:flex;flex-direction:column;}
.news-side li{border-bottom:1px solid var(--line);padding:18px 0;}
.news-side li:first-child{padding-top:0;}
.news-side h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px;}
.news-side h3 a{color:var(--brand-900);}
.news-side h3 a:hover{color:var(--brand-500);}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--paper-2);
  padding:56px 24px;
  text-align:center;
  margin-top:40px;
}
.empty-state i{font-size:32px;color:var(--brand-500);}
.empty-state p{color:var(--muted);margin:14px auto 20px;max-width:420px;}

/* FAQ */
.faq-wrap{margin-top:44px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 18px 22px 16px;
  font-size:17.5px;
  font-weight:700;
  color:var(--brand-900);
  position:relative;
  transition:background .28s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#F1F3EC;}
.faq-item summary .plus{
  flex:0 0 26px;width:26px;height:26px;
  border:1px solid var(--brand-700);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-700);font-size:15px;line-height:1;
  transition:transform .34s var(--ease),background .3s var(--ease),color .3s var(--ease);
}
.faq-item[open] summary{background:#F1F3EC;}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;
  background:var(--lime);border-radius:2px;
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:var(--brand-700);color:var(--lime);}
.faq-answer{padding:0 60px 24px 16px;color:var(--muted);font-size:15.5px;}

/* CTA 带 */
.cta-band{background:var(--lime);color:var(--brand-900);padding:76px 0;}
.cta-band h2{color:var(--brand-900);font-size:clamp(24px,2.6vw,34px);}
.cta-band p{color:#22392F;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.cta-form .field{position:relative;margin-bottom:26px;}
.cta-form label{
  position:absolute;left:0;top:12px;
  font-size:14px;color:#3C5248;
  transition:all .26s var(--ease);
  pointer-events:none;
}
.cta-form .field.active label{top:-12px;font-size:12px;color:var(--brand-700);font-weight:700;}
.cta-form input,.cta-form textarea{
  width:100%;
  border:0;border-bottom:1px solid rgba(11,26,23,.35);
  background:transparent;
  padding:12px 0;
  color:var(--brand-900);
  outline:none;
  transition:border-color .28s var(--ease);
  resize:none;
}
.cta-form input:focus,.cta-form textarea:focus{border-color:var(--brand-700);border-bottom-width:2px;}
.cta-form .submit-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.cta-form .privacy{font-size:12.5px;color:#3C5248;margin-top:14px;max-width:420px;}

/* 页脚 */
.site-footer{background:var(--brand-900);color:#DDE2DA;padding:72px 0 0;}
.site-footer h4{color:#FFFFFF;font-size:16px;margin-bottom:18px;letter-spacing:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.site-footer p{color:rgba(221,226,218,.72);font-size:14.5px;max-width:340px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:rgba(221,226,218,.78);font-size:14.5px;}
.footer-links a:hover{color:var(--lime);}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:rgba(221,226,218,.78);margin-bottom:12px;}
.footer-contact i{color:var(--lime);margin-top:5px;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(221,226,218,.6);
}
.footer-bottom a{color:rgba(221,226,218,.7);}
.footer-bottom a:hover{color:var(--lime);}

/* 滚动进入动画 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1399px){
  .hero h1{font-size:clamp(32px,4.4vw,54px);}
}
@media (max-width:1199px){
  .section{padding:88px 0;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .quote-card{flex:0 0 calc((100% - 20px)/1.6);}
}
@media (max-width:991px){
  :root{--header-h:104px;}
  .main-nav,.header-actions .btn-brand{display:none;}
  .burger{display:inline-flex;}
  .brand-row{height:58px;}
  .brand-text{font-size:18px;}
  .section{padding:72px 0;}
  .hero{padding:52px 0 64px;}
  .feature-row{grid-template-columns:1fr;gap:28px;}
  .feature-row.reverse .feature-media{order:0;}
  .dark-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .mobile-panel{display:block;}
}
@media (max-width:767px){
  .container,.container-lg,.container-xl{padding-left:20px;padding-right:20px;}
  body{font-size:16px;}
  .section{padding:56px 0;}
  .hero-stats{gap:28px;}
  .stat-num{font-size:28px;}
  .dark-cell .stat-num{font-size:32px;}
  .news-grid{grid-template-columns:1fr;}
  .quote-card{flex:0 0 86%;}
  .pain-item{grid-template-columns:64px 1fr;gap:16px;}
  .pain-index{font-size:36px;}
  .faq-answer{padding-right:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575px){
  .section{padding:48px 0;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .dark-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .news-feature .body{padding:20px;}
}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--paper-2);
  padding:12px 20px 20px;
}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--text);
}
.mobile-panel a:last-child{border-bottom:0;}
.mobile-panel a.active{color:var(--brand-700);font-weight:700;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --brand-700:#0E3B33;
  --brand-900:#0B1A17;
  --brand-500:#175B4C;
  --lime:#CDF24A;
  --flame:#F0562A;
  --paper:#F7F6F1;
  --paper-2:#FFFFFF;
  --line:#E3E1D8;
  --text:#12211E;
  --muted:#6B7A75;
  --radius-card:10px;
  --radius-img:12px;
  --radius-btn:8px;
  --shadow-1:0 1px 2px rgba(11,26,23,.05);
  --shadow-2:0 14px 34px -14px rgba(11,26,23,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .26s var(--ease),border-color .26s var(--ease);}
a:hover{color:var(--brand-700);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{padding-left:1.15em;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.container{max-width:var(--container);padding-left:32px;padding-right:32px;}
.row{--bs-gutter-x:1.75rem;}

/* ---------- 通用按钮 / 标签 ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border:1px solid var(--brand-700);
  background:var(--brand-700);color:#F4F6F2 !important;font-weight:700;font-size:15px;
  border-radius:var(--radius-btn);cursor:pointer;
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-brand:hover{background:var(--lime);border-color:var(--lime);color:var(--brand-900) !important;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border:1px solid rgba(14,59,51,.35);
  background:transparent;color:var(--brand-700) !important;font-weight:700;font-size:15px;
  border-radius:var(--radius-btn);cursor:pointer;
  transition:background .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.btn-ghost:hover{background:var(--brand-700);border-color:var(--brand-700);color:#F4F6F2 !important;transform:translateY(-2px);}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;border:1px solid var(--lime);
  background:var(--lime);color:var(--brand-900) !important;font-weight:800;font-size:15px;
  border-radius:var(--radius-btn);cursor:pointer;
  transition:background .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-lime:hover{background:#dcff66;transform:translateY(-2px);box-shadow:0 14px 34px -16px rgba(11,26,23,.45);}
.btn-sm-brand{min-height:40px;padding:9px 18px;font-size:14px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;
  border:1px solid rgba(14,59,51,.22);color:var(--brand-700);background:transparent;
}
.pill-lime{border-color:var(--lime);background:rgba(205,242,74,.22);color:var(--brand-700);}
.pill-flame{border-color:rgba(240,86,42,.4);color:var(--flame);background:rgba(240,86,42,.07);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:var(--paper-2);border-bottom:1px solid var(--line);}
.header-bar{position:relative;border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;transition:height .3s var(--ease);}
.site-header.is-scrolled .header-inner{height:60px;}
.site-header.is-scrolled{box-shadow:0 6px 22px -18px rgba(11,26,23,.55);}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--brand-900);}
.brand:hover{color:var(--brand-900);}
.brand-mark{width:12px;height:22px;border-radius:3px;background:linear-gradient(180deg,var(--brand-700) 0 50%,var(--lime) 50% 100%);flex:none;}
.brand-text{font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1.1;white-space:nowrap;}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--paper-2);border-radius:999px;color:var(--brand-700);
  cursor:pointer;transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.icon-btn:hover{background:var(--brand-700);border-color:var(--brand-700);color:#F4F6F2;}
.nav-toggle{display:none;}
.header-search{
  display:none;position:absolute;left:50%;top:13px;transform:translateX(-50%);
  width:min(460px,52vw);align-items:center;gap:10px;
  background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:6px 10px 6px 16px;
  box-shadow:var(--shadow-1);
}
.header-search.is-open{display:flex;}
.header-search input{flex:1;border:0;background:transparent;outline:none;height:32px;font-size:15px;}
.header-search button{border:0;background:var(--brand-700);color:#F4F6F2;border-radius:999px;height:34px;padding:0 16px;font-size:14px;font-weight:700;cursor:pointer;}
.header-search button:hover{background:var(--lime);color:var(--brand-900);}
.mobile-panel{display:none;padding:14px 0 18px;}
.mobile-panel.is-open{display:block;}
.mobile-search{display:flex;gap:10px;margin-bottom:12px;}
.mobile-search input{flex:1;min-height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--paper-2);padding:0 14px;outline:none;}
.mobile-search input:focus{border-color:var(--brand-700);}
.channel-bar{background:var(--paper-2);}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:48px;}
.main-nav{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.main-nav::-webkit-scrollbar{display:none;}
.main-nav a{
  flex:none;display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);color:var(--brand-700);font-size:14px;font-weight:500;white-space:nowrap;
  transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.main-nav a:hover{background:var(--brand-700);border-color:var(--brand-700);color:#F4F6F2 !important;}
.main-nav a.active{background:var(--brand-700);border-color:var(--brand-700);color:#F4F6F2;}
.channel-more{flex:none;font-size:13px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:6px;}
.channel-more:hover{color:var(--brand-700);}

/* ---------- 面包屑 + 标题区 ---------- */
.article-head{background:var(--paper-2);padding:34px 0 38px;border-bottom:1px solid var(--line);position:relative;}
.article-head::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,var(--brand-700) 0 88px,transparent 88px);
}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.breadcrumb-nav a{color:var(--muted);}
.breadcrumb-nav a:hover{color:var(--brand-700);}
.breadcrumb-nav .sep{color:#BFC6C1;}
.crumb-cat{color:var(--brand-700);font-weight:600;}
.crumb-current{color:var(--muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head h1{
  font-size:clamp(28px,3.4vw,44px);line-height:1.2;letter-spacing:-.02em;font-weight:900;
  color:var(--brand-900);margin:0 0 20px;max-width:960px;overflow-wrap:break-word;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-row i{color:var(--brand-500);}

/* ---------- 正文区 ---------- */
.article-main{padding:52px 0 80px;}
.article-paper{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px 46px;box-shadow:var(--shadow-1);
}
.article-body{max-width:760px;font-size:17px;line-height:1.95;color:var(--text);overflow-wrap:break-word;}
.article-body p{margin:0 0 1.3em;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.2vw,28px);font-weight:800;line-height:1.35;
  color:var(--brand-900);margin:46px 0 18px;padding-left:17px;letter-spacing:-.01em;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--lime);}
.article-body h3{font-size:20px;font-weight:700;color:var(--brand-900);margin:32px 0 14px;line-height:1.45;}
.article-body h4{font-size:17px;font-weight:700;color:var(--brand-700);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.3em;}
.article-body li{margin-bottom:.6em;}
.article-body ul li::marker{color:var(--brand-500);content:"■  ";}
.article-body ol li::marker{color:var(--brand-700);font-weight:700;}
.article-body blockquote{
  margin:28px 0;padding:20px 26px;background:var(--paper);border-left:4px solid var(--brand-700);
  border-radius:0 var(--radius-card) var(--radius-card) 0;color:#41524D;font-style:italic;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-img);margin:28px auto;box-shadow:var(--shadow-1);}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--brand-500);border-bottom:1px solid rgba(23,91,76,.3);}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700);}
.article-body pre{
  background:#F1F2ED;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;overflow-x:auto;font-family:"Inter",ui-monospace,Menlo,Consolas,monospace;font-size:14px;line-height:1.7;
}
.article-body code{font-family:"Inter",ui-monospace,Menlo,Consolas,monospace;font-size:.92em;background:#F1F2ED;padding:2px 6px;border-radius:4px;}
.article-body pre code{background:transparent;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--paper);font-weight:700;color:var(--brand-900);}
.article-body strong{font-weight:800;color:var(--brand-900);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.article-empty{padding:30px 0 10px;text-align:left;}
.article-empty h2{font-size:24px;font-weight:800;color:var(--brand-900);margin:0 0 12px;padding:0;}
.article-empty p{color:var(--muted);margin:0 0 22px;max-width:620px;}

/* 文末标签 / 分享 */
.article-footer{margin-top:44px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:22px;justify-content:space-between;}
.tag-row,.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-label{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;font-family:"Inter",sans-serif;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);font-size:13.5px;color:var(--brand-700);background:var(--paper);
  transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.tag:hover{background:var(--brand-700);border-color:var(--brand-700);color:#F4F6F2 !important;}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper-2);color:var(--brand-700);font-size:13.5px;cursor:pointer;
  transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.share-btn:hover{background:var(--lime);border-color:var(--lime);color:var(--brand-900);}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-1);}
.side-title{font-size:15px;font-weight:800;color:var(--brand-900);margin:0 0 16px;display:flex;align-items:center;gap:8px;letter-spacing:.01em;}
.side-title::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--lime);}
.toc-list{list-style:none;margin:0;padding:0;max-height:320px;overflow:auto;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:7px 10px 7px 13px;border-left:2px solid var(--line);
  font-size:14px;color:var(--muted);line-height:1.5;
  transition:color .26s var(--ease),border-color .26s var(--ease),background .26s var(--ease);
}
.toc-list a:hover{color:var(--brand-700);background:var(--paper);}
.toc-list a.is-active{color:var(--brand-900);font-weight:700;border-left-color:var(--lime);background:var(--paper);}
.hot-list{list-style:none;margin:0;padding:0;}
.hot-list li{padding:12px 0;border-bottom:1px solid var(--line);}
.hot-list li:first-child{padding-top:0;}
.hot-list li:last-child{border-bottom:0;padding-bottom:0;}
.hot-list a{display:flex;gap:10px;align-items:flex-start;color:var(--text);font-size:14.5px;line-height:1.6;}
.hot-list a:hover{color:var(--brand-700);}
.hot-index{font-family:"Inter",sans-serif;font-size:13px;font-weight:700;color:var(--brand-500);flex:none;padding-top:2px;}
.hot-list a:hover .hot-index{color:var(--flame);}
.side-cta{background:var(--brand-900);border-color:transparent;color:#E7EBE6;box-shadow:none;border:1px solid rgba(247,246,241,.14);}
.side-cta .side-title{color:#F4F6F2;}
.side-cta p{font-size:14px;line-height:1.75;color:rgba(247,246,241,.72);margin:0 0 18px;}
.side-cta .btn-lime{width:100%;}

/* ---------- 相关推荐 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.8vw,36px);font-weight:900;letter-spacing:-.02em;color:var(--brand-900);margin:0 0 12px;line-height:1.25;}
.section-head p{color:var(--muted);margin:0;font-size:16px;}
.related-section{background:var(--paper-2);border-top:1px solid var(--line);}
.card-post{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  height:100%;display:flex;flex-direction:column;
  transition:transform .34s var(--ease),box-shadow .34s var(--ease),border-color .34s var(--ease);
}
.card-post:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D5D2C6;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.card-post:hover .card-media img{transform:scale(1.03);}
.card-badge{
  position:absolute;left:12px;top:12px;padding:5px 12px;border-radius:999px;
  background:rgba(11,26,23,.82);color:#F4F6F2;font-size:12px;font-weight:600;backdrop-filter:blur(2px);
}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18px;font-weight:700;line-height:1.5;color:var(--brand-900);margin:0 0 10px;}
.card-body h3 a{color:inherit;}
.card-body h3 a:hover{color:var(--brand-700);}
.card-desc{font-size:14.5px;color:var(--muted);line-height:1.75;margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);font-family:"Inter","Noto Sans SC",sans-serif;}
.card-meta .more{font-weight:600;color:var(--brand-500);display:inline-flex;align-items:center;gap:6px;}
.card-meta .more:hover{color:var(--brand-700);}

/* ---------- 转化带 ---------- */
.cta-band{background:var(--lime);color:var(--brand-900);}
.cta-band .container{padding-top:64px;padding-bottom:64px;}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.cta-band h2{font-size:clamp(26px,3vw,40px);font-weight:900;letter-spacing:-.02em;margin:0 0 14px;line-height:1.18;color:var(--brand-900);}
.cta-band p{margin:0;font-size:16px;color:#1E3A33;max-width:520px;}
.field{position:relative;margin-bottom:26px;}
.field input,.field textarea{
  width:100%;border:0;border-bottom:1.5px solid rgba(11,26,23,.32);background:transparent;
  padding:14px 2px 10px;outline:none;font-size:15.5px;color:var(--brand-900);resize:none;
  transition:border-color .26s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(11,26,23,.5);}
.field input:focus,.field textarea:focus{border-bottom-color:var(--brand-900);}
.field label{font-size:12.5px;font-weight:700;letter-spacing:.06em;color:rgba(11,26,23,.7);text-transform:uppercase;font-family:"Inter",sans-serif;}
.cta-band .btn-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:13px 28px;
  background:var(--brand-900);color:#F4F6F2;border:1px solid var(--brand-900);border-radius:var(--radius-btn);
  font-weight:800;font-size:15px;cursor:pointer;transition:background .3s var(--ease),transform .3s var(--ease);
}
.cta-band .btn-dark:hover{background:var(--brand-700);transform:translateY(-2px);}
.form-note{font-size:12.5px;color:rgba(11,26,23,.62);margin:14px 0 0;}
.form-msg{font-size:14px;font-weight:700;color:var(--brand-900);margin-top:12px;min-height:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(247,246,241,.78);padding:70px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.site-footer h4{font-size:15px;font-weight:800;color:#F4F6F2;margin:0 0 18px;letter-spacing:.01em;}
.site-footer p{font-size:14px;line-height:1.8;margin:0;max-width:340px;color:rgba(247,246,241,.66);}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:rgba(247,246,241,.72);position:relative;display:inline-block;}
.footer-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--lime);transition:width .3s var(--ease);}
.footer-links a:hover{color:#F4F6F2;}
.footer-links a:hover::after{width:100%;}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin-bottom:12px;color:rgba(247,246,241,.72);}
.footer-contact i{color:var(--lime);width:16px;margin-top:5px;flex:none;}
.footer-bottom{
  border-top:1px solid rgba(247,246,241,.14);padding:20px 0;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:10px;font-size:13px;color:rgba(247,246,241,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .brand-text{font-size:20px;}
}
@media (max-width:1199.98px){
  .container{padding-left:28px;padding-right:28px;}
  .cta-grid{gap:36px;}
}
@media (max-width:991.98px){
  .container{padding-left:24px;padding-right:24px;}
  .header-inner{height:64px;}
  .header-search{display:none !important;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm-brand{display:none;}
  .channel-inner{justify-content:flex-start;gap:14px;}
  .channel-more{display:none;}
  .channel-inner::after{content:"";position:sticky;right:0;width:36px;height:34px;background:linear-gradient(90deg,rgba(255,255,255,0),var(--paper-2));flex:none;}
  .main-nav{scroll-snap-type:x proximity;}
  .main-nav a{scroll-snap-align:start;}
  .article-paper{padding:32px 28px;}
  .sidebar{position:static;}
  .section{padding:72px 0;}
  .cta-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .article-head{padding:24px 0 28px;}
  .article-main{padding:36px 0 60px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-paper{padding:26px 20px;border-radius:var(--radius-card);}
  .article-footer{flex-direction:column;gap:18px;}
  .section{padding:56px 0;}
  .cta-band .container{padding-top:48px;padding-bottom:48px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:36px;}
  .site-footer{padding-top:52px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575.98px){
  .container{padding-left:20px;padding-right:20px;}
  .brand-text{font-size:17.5px;}
  .header-inner{gap:12px;}
  .btn-brand,.btn-ghost,.btn-lime,.cta-band .btn-dark{width:100%;}
  .header-actions .btn-brand{width:auto;}
  .footer-grid{grid-template-columns:1fr;}
  .meta-row{gap:10px;}
  .card-body{padding:18px 18px 20px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --brand-700:#0E3B33;
  --brand-900:#0B1A17;
  --brand-500:#175B4C;
  --lime:#CDF24A;
  --flame:#F0562A;
  --paper:#F7F6F1;
  --paper-2:#FFFFFF;
  --line:#E3E1D8;
  --text:#12211E;
  --muted:#5F6F6A;
  --radius-card:10px;
  --radius-img:12px;
  --radius-btn:8px;
  --shadow-1:0 1px 2px rgba(11,26,23,.05);
  --shadow-2:0 14px 34px -14px rgba(11,26,23,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .26s var(--ease),background-color .26s var(--ease),border-color .26s var(--ease);}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:0;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
button,input,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px;}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

.container,.container-lg,.container-xl{
  max-width:1240px;
  width:100%;
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
}

/* ============ 顶部导航 ============ */
.site-header{background:var(--paper-2);border-bottom:1px solid var(--line);}
.brand-row{transition:box-shadow .3s var(--ease);}
.site-header.scrolled .brand-row{box-shadow:0 6px 20px -14px rgba(11,26,23,.35);}
.brand-inner{display:flex;align-items:center;gap:26px;height:72px;}
.brand-logo{
  font-size:21px;font-weight:900;letter-spacing:-.01em;color:var(--brand-900);
  white-space:nowrap;display:inline-flex;align-items:center;
}
.brand-logo::after{
  content:"";display:inline-block;width:8px;height:8px;border-radius:2px;
  background:var(--lime);margin-left:7px;transform:translateY(-5px);
}
.quick-links{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:14.5px;font-weight:500;color:var(--muted);}
.quick-links a{position:relative;padding:6px 0;}
.quick-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--lime);transition:width .3s var(--ease);
}
.quick-links a:hover{color:var(--brand-700);}
.quick-links a:hover::after,.quick-links a.active::after{width:100%;}
.quick-links a.active{color:var(--brand-700);font-weight:700;}

.brand-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}
.icon-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  background:var(--paper-2);color:var(--brand-700);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .26s var(--ease);
}
.icon-btn:hover{background:var(--brand-700);color:var(--lime);border-color:var(--brand-700);}
.icon-btn:active{transform:scale(.96);}
.menu-btn{display:none;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:700;cursor:pointer;
  transition:all .28s var(--ease);white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--brand-700);color:#F7F6F1;}
.btn-primary:hover{background:var(--lime);color:var(--brand-900);}
.btn-lime{background:var(--lime);color:var(--brand-900);}
.btn-lime:hover{background:var(--brand-900);color:var(--lime);}
.btn-ghost{background:transparent;border-color:rgba(11,26,23,.22);color:var(--brand-900);}
.btn-ghost:hover{border-color:var(--brand-700);background:rgba(14,59,51,.06);}
.btn-dark{background:var(--brand-900);color:#F7F6F1;}
.btn-dark:hover{background:var(--brand-700);color:var(--lime);}
.btn-block{width:100%;}

.search-panel{border-top:1px dashed var(--line);padding:14px 0 18px;}
.search-form{
  display:flex;align-items:center;gap:12px;background:var(--paper);
  border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 18px;
}
.search-form > i{color:var(--muted);}
.search-form input{
  flex:1;border:0;background:transparent;outline:none;
  font-size:15px;min-height:40px;min-width:0;
}
.search-form input::placeholder{color:#94A19C;}

.mobile-menu{background:var(--paper-2);border-top:1px solid var(--line);padding:6px 0 18px;}
.mobile-menu a{
  display:block;padding:13px 0;border-bottom:1px solid var(--line);
  font-size:15.5px;font-weight:600;color:var(--muted);
}
.mobile-menu a:last-child{border-bottom:0;}
.mobile-menu a.active{color:var(--brand-700);font-weight:800;}

.channel-row{
  background:var(--paper-2);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:60;
}
.channel-inner{display:flex;align-items:center;gap:16px;height:48px;position:relative;}
.channel-inner::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:56px;
  background:linear-gradient(90deg,rgba(255,255,255,0),var(--paper-2));
  pointer-events:none;opacity:0;transition:opacity .3s var(--ease);
}
.main-nav{
  display:flex;align-items:center;gap:10px;height:48px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.main-nav::-webkit-scrollbar{display:none;}
.main-nav a{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:34px;padding:0 17px;
  border-radius:999px;border:1px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--muted);background:transparent;
  transition:all .26s var(--ease);
}
.main-nav a:hover{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700);}
.main-nav a.active{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700);}
.more-link{
  margin-left:auto;font-size:13.5px;font-weight:700;color:var(--brand-500);
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
}
.more-link:hover{color:var(--flame);}

/* ============ 分类横幅 ============ */
.banner{position:relative;overflow:hidden;background:var(--brand-900);}
.banner-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.38;
}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,26,23,.94) 0%,rgba(11,26,23,.78) 44%,rgba(11,26,23,.42) 100%);
}
.banner-inner{position:relative;z-index:2;padding:92px 0 70px;color:#F7F6F1;max-width:840px;}
.banner-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--lime);border:1px solid rgba(205,242,74,.45);
  background:rgba(205,242,74,.08);border-radius:999px;
  padding:6px 15px;margin-bottom:22px;
}
.banner-eyebrow i{font-size:11px;}
.banner-title{
  font-size:clamp(34px,5vw,58px);line-height:1.12;letter-spacing:-.02em;
  font-weight:900;color:#fff;margin-bottom:20px;
}
.banner-title span{
  display:block;font-size:clamp(15px,1.5vw,19px);font-weight:700;
  letter-spacing:.06em;color:var(--lime);margin-top:14px;
}
.banner-desc{
  font-size:17px;line-height:1.9;color:rgba(247,246,241,.82);
  max-width:700px;margin-bottom:0;
}
.banner-stats{
  display:flex;flex-wrap:wrap;gap:44px;
  margin-top:38px;padding-top:26px;
  border-top:1px solid rgba(247,246,241,.18);
}
.banner-stat-num{
  font-family:Inter,system-ui,sans-serif;
  font-size:32px;font-weight:800;line-height:1.1;
  color:var(--lime);font-variant-numeric:tabular-nums;
}
.banner-stat-label{font-size:13px;color:rgba(247,246,241,.68);margin-top:6px;}

/* ============ 通用板块 ============ */
.section{padding:100px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--paper-2);}
.section-head{max-width:780px;margin-bottom:40px;}
.section-label{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.14em;
  color:var(--brand-500);margin-bottom:14px;text-transform:uppercase;
}
.section h2{font-size:clamp(26px,3vw,40px);color:var(--brand-900);}
.section-lead{margin-top:16px;font-size:16.5px;color:var(--muted);max-width:720px;margin-bottom:0;}

/* ============ 筛选 ============ */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.filter-pill{
  border:1px solid var(--line);background:var(--paper-2);
  border-radius:999px;padding:9px 20px;font-size:14.5px;font-weight:600;
  color:var(--muted);cursor:pointer;transition:all .26s var(--ease);
}
.filter-pill:hover{border-color:var(--brand-700);color:var(--brand-700);}
.filter-pill.active{background:var(--brand-700);border-color:var(--brand-700);color:#F7F6F1;}

/* ============ 卡片网格 ============ */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.entry-card{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.entry-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--line);}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .42s var(--ease);}
.entry-card:hover .entry-media img{transform:scale(1.03);}
.entry-badge{
  position:absolute;left:14px;top:14px;
  background:rgba(11,26,23,.84);color:var(--lime);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:5px 13px;border-radius:999px;
}
.entry-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.entry-title{font-size:19px;line-height:1.5;margin-bottom:10px;color:var(--brand-900);}
.entry-title a:hover{color:var(--brand-500);}
.entry-summary{font-size:14.5px;line-height:1.8;color:var(--muted);margin-bottom:20px;}
.entry-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  font-family:Inter,system-ui,sans-serif;font-size:13px;color:var(--muted);
}
.entry-link{font-weight:700;color:var(--brand-700);font-family:"Noto Sans SC",system-ui,sans-serif;}
.entry-link:hover{color:var(--flame);}
.entry-empty{
  display:none;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--muted);background:var(--paper-2);
}
.entry-empty i{font-size:30px;color:var(--brand-500);display:block;margin-bottom:14px;}

/* ============ 分页 ============ */
.pager{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:46px;}
.pager a,.pager span{
  min-width:44px;height:44px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid var(--line);
  background:var(--paper-2);font-size:14px;font-weight:600;
  color:var(--muted);transition:all .26s var(--ease);
}
.pager a:hover{border-color:var(--brand-700);color:var(--brand-700);}
.pager .current{background:var(--brand-700);border-color:var(--brand-700);color:#F7F6F1;}

/* ============ 编号清单 ============ */
.brief-list{border-top:1px solid var(--line);}
.brief-item{
  display:grid;grid-template-columns:120px 1fr;gap:32px;
  padding:34px 0;border-bottom:1px solid var(--line);
}
.brief-num{
  font-family:Inter,system-ui,sans-serif;font-size:48px;font-weight:800;
  line-height:1;color:rgba(14,59,51,.16);font-variant-numeric:tabular-nums;
}
.brief-item h3{
  font-size:21px;color:var(--brand-900);margin-bottom:10px;
  padding-left:16px;position:relative;
}
.brief-item h3::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  background:var(--lime);border-radius:2px;
}
.brief-item p{font-size:15.5px;color:var(--muted);max-width:780px;margin-bottom:0;}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:10px;}
.flow-step{border-top:2px solid var(--line);padding-top:24px;position:relative;}
.flow-step::before{
  content:"";position:absolute;left:0;top:-2px;width:46px;height:2px;background:var(--lime);
}
.flow-time{
  display:block;font-family:Inter,system-ui,sans-serif;font-size:12.5px;
  font-weight:700;letter-spacing:.1em;color:var(--flame);margin-bottom:12px;
  text-transform:uppercase;
}
.flow-step h3{font-size:19px;color:var(--brand-900);margin-bottom:10px;}
.flow-step p{font-size:14.5px;color:var(--muted);margin-bottom:0;}

/* ============ 数据条带 ============ */
.metrics{background:var(--brand-900);color:#F7F6F1;padding:88px 0;}
.metrics .section-label{color:var(--lime);}
.metrics h2{color:#fff;}
.metrics .section-lead{color:rgba(247,246,241,.7);}
.metrics-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(247,246,241,.16);border:1px solid rgba(247,246,241,.16);
  border-radius:var(--radius-img);overflow:hidden;margin-top:8px;
}
.metric{background:var(--brand-900);padding:34px 26px;}
.metric-num{
  font-family:Inter,system-ui,sans-serif;font-size:40px;font-weight:800;
  color:var(--lime);line-height:1.1;font-variant-numeric:tabular-nums;
}
.metric-label{font-size:14px;color:rgba(247,246,241,.72);margin-top:10px;}
.metrics-note{margin-top:22px;font-size:13px;color:rgba(247,246,241,.5);}

/* ============ FAQ ============ */
.faq-list{max-width:860px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 48px 22px 20px;font-size:17px;font-weight:700;
  color:var(--brand-900);transition:background-color .26s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;
  border-radius:2px;background:transparent;transition:background-color .26s var(--ease);
}
.faq-item[open] summary::before{background:var(--lime);}
.faq-item summary::after{
  content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand-500);
  transition:transform .3s var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq-item summary:hover{background:rgba(14,59,51,.04);}
.faq-answer{padding:0 48px 24px 20px;font-size:15.5px;color:var(--muted);max-width:760px;}
.faq-answer p:last-child{margin-bottom:0;}

/* ============ CTA ============ */
.cta-band{background:var(--lime);color:var(--brand-900);padding:80px 0;}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.cta-band .section-label{color:var(--brand-700);}
.cta-band h2{color:var(--brand-900);font-size:clamp(26px,3vw,38px);}
.cta-band p{color:rgba(11,26,23,.78);font-size:16.5px;margin-top:16px;max-width:560px;margin-bottom:0;}
.cta-form{
  background:rgba(255,255,255,.6);border:1px solid rgba(11,26,23,.14);
  border-radius:var(--radius-img);padding:28px;
}
.field{position:relative;margin-bottom:24px;}
.field input,.field textarea{
  width:100%;border:0;border-bottom:1px solid rgba(11,26,23,.3);
  background:transparent;padding:10px 0 8px;font-size:15.5px;
  outline:none;transition:border-color .26s var(--ease);resize:vertical;
}
.field input:focus,.field textarea:focus{border-color:var(--brand-700);}
.field label{
  position:absolute;left:0;top:10px;font-size:15px;color:rgba(11,26,23,.6);
  pointer-events:none;transition:all .24s var(--ease);
}
.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label{
  top:-13px;font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--brand-700);
}
.cta-note{font-size:12.5px;color:rgba(11,26,23,.62);margin:16px 0 0;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#F7F6F1;padding:76px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:44px;}
.site-footer h4{font-size:16px;font-weight:800;color:#fff;margin-bottom:20px;letter-spacing:0;}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(247,246,241,.66);max-width:340px;margin-bottom:0;}
.footer-links li,.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:rgba(247,246,241,.68);margin-bottom:13px;
  line-height:1.7;
}
.footer-links li:last-child,.footer-contact li:last-child{margin-bottom:0;}
.footer-links a{color:rgba(247,246,241,.68);}
.footer-links a:hover{color:var(--lime);}
.footer-contact i{color:var(--lime);margin-top:5px;font-size:13px;}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;
  border-top:1px solid rgba(247,246,241,.14);
  margin-top:54px;padding:22px 0 30px;
  font-size:13px;color:rgba(247,246,241,.52);
}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.js .reveal.is-visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .quick-links{gap:16px;font-size:14px;}
  .brand-logo{font-size:20px;}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:36px;}
  .footer-grid > div:last-child{grid-column:span 3;}
  .footer-grid > div:last-child .footer-contact{display:grid;grid-template-columns:repeat(3,1fr);gap:0 24px;}
}
@media (max-width:991px){
  .container,.container-lg,.container-xl{padding-left:24px;padding-right:24px;}
  .quick-links{display:none;}
  .menu-btn{display:inline-flex;}
  .brand-inner{height:64px;gap:14px;}
  .brand-actions{margin-left:auto;}
  .brand-cta{display:none;}
  .channel-inner::after{opacity:1;}
  .more-link{display:none;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .banner-inner{padding:72px 0 56px;}
  .entry-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px 24px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);}
  .metrics{padding:68px 0;}
  .cta-grid{grid-template-columns:1fr;gap:38px;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px;}
  .footer-grid > div:last-child{grid-column:span 2;}
  .footer-grid > div:last-child .footer-contact{grid-template-columns:1fr;}
  .brief-item{grid-template-columns:90px 1fr;gap:22px;padding:28px 0;}
  .brief-num{font-size:38px;}
}
@media (max-width:575px){
  body{font-size:16px;}
  .container,.container-lg,.container-xl{padding-left:20px;padding-right:20px;}
  .brand-logo{font-size:17px;}
  .brand-logo::after{width:6px;height:6px;margin-left:5px;transform:translateY(-4px);}
  .icon-btn{width:42px;height:42px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .banner-inner{padding:56px 0 46px;}
  .banner-title span{margin-top:10px;}
  .banner-stats{gap:0;display:grid;grid-template-columns:repeat(3,1fr);}
  .banner-stat-num{font-size:24px;}
  .banner-stat-label{font-size:12px;}
  .entry-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;gap:22px;}
  .metrics-grid{grid-template-columns:1fr;}
  .metric{padding:26px 22px;}
  .metric-num{font-size:34px;}
  .brief-item{grid-template-columns:1fr;gap:8px;}
  .btn{width:100%;}
  .pager .btn{width:auto;}
  .pager a,.pager span{min-width:42px;padding:0 12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-grid > div:last-child{grid-column:span 1;}
  .cta-form{padding:20px;}
  .faq-item summary{font-size:16px;padding:18px 44px 18px 16px;}
  .faq-answer{padding:0 20px 20px 16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important;}
  .js .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B1A17;
  --brand-700:#0E3B33;
  --brand-500:#175B4C;
  --lime:#CDF24A;
  --flame:#F0562A;
  --paper:#F7F6F1;
  --paper-2:#FFFFFF;
  --line:#E3E1D8;
  --text:#12211E;
  --muted:#6B7A75;
  --radius-card:10px;
  --radius-img:12px;
  --radius-btn:8px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(11,26,23,.05);
  --shadow-2:0 14px 34px -14px rgba(11,26,23,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --section-y:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .26s var(--ease),background-color .26s var(--ease),border-color .26s var(--ease)}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{font-weight:800;color:var(--brand-900);letter-spacing:-.01em;margin:0}
h1{font-size:clamp(30px,3.4vw,40px);line-height:1.2;letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,38px);line-height:1.25}
h3{font-size:21px;line-height:1.4}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
.section{padding:var(--section-y) 0}
.section-alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-lead{max-width:720px;color:var(--muted);font-size:16.5px;margin:16px 0 40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:Inter,system-ui,sans-serif;font-size:12.5px;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;color:var(--brand-500);
  border:1px solid var(--brand-500);border-radius:var(--radius-pill);
  padding:6px 14px;margin-bottom:20px;background:transparent;
}
.eyebrow.on-dark{color:var(--lime);border-color:rgba(205,242,74,.5)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  padding:12px 24px;min-height:46px;border:1px solid transparent;
  cursor:pointer;transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .26s var(--ease);
}
.btn-brand{background:var(--brand-700);color:#F7F6F1}
.btn-brand:hover{background:var(--lime);color:var(--brand-900);transform:translateY(-2px)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-700);color:#F7F6F1}
.btn-lime{background:var(--lime);color:var(--brand-900)}
.btn-lime:hover{background:var(--brand-900);color:var(--lime)}
.btn-dark{background:var(--brand-900);color:#F7F6F1}
.btn-dark:hover{background:var(--brand-500)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-block{width:100%}

/* ---------- 头部与导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(247,246,241,.97);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(11,26,23,.5)}
.topbar-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .3s var(--ease)}
.site-header.is-scrolled .topbar-inner{height:60px}
.brand-logo{
  font-size:21px;font-weight:800;letter-spacing:-.01em;color:var(--brand-900);
  white-space:nowrap;flex-shrink:0;
}
.brand-logo:hover{color:var(--brand-500)}
.topbar-tagline{font-size:13.5px;color:var(--muted);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--radius-pill);
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);color:var(--brand-700);
  cursor:pointer;transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.icon-btn:hover{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700)}
.hamburger-btn{display:none}
.search-panel{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);background:var(--paper-2);border-top:1px solid transparent}
.search-panel.open{max-height:140px;border-top-color:var(--line)}
.search-panel-inner{padding:18px 0 22px}
.search-field{display:flex;align-items:center;gap:14px;max-width:660px}
.search-field i{color:var(--muted);font-size:15px}
.search-input{
  flex:1;border:none;border-bottom:1px solid var(--line);background:transparent;
  padding:10px 2px;font-size:16px;color:var(--text);font-family:inherit;border-radius:0;
}
.search-input:focus{outline:none;border-bottom-color:var(--brand-700)}
.mobile-panel{display:none;background:var(--paper-2);border-top:1px solid var(--line)}
.mobile-panel.open{display:block}
.mobile-panel-inner{padding:16px 0 24px}
.mobile-panel a.m-link{
  display:block;padding:13px 2px;font-size:15.5px;font-weight:600;
  border-bottom:1px solid var(--line);color:var(--brand-700);
}
.mobile-panel a.m-link.active{color:var(--brand-900);box-shadow:inset 4px 0 0 var(--lime);padding-left:14px}
.channel-bar{background:var(--paper-2);border-top:1px solid var(--line)}
.channel-inner{
  display:flex;align-items:center;gap:10px;height:48px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  scroll-snap-type:x proximity;
}
.channel-inner::-webkit-scrollbar{display:none}
.main-nav{display:flex;align-items:center;gap:8px}
.main-nav a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--radius-pill);border:1px solid var(--line);
  font-size:14.5px;color:var(--brand-700);white-space:nowrap;scroll-snap-align:start;
  transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
}
.main-nav a:hover{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700)}
.main-nav a.active{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700);font-weight:700}

/* ---------- 分类横幅 ---------- */
.cat-hero{
  position:relative;color:#F7F6F1;
  background-image:linear-gradient(120deg,rgba(11,26,23,.92) 0%,rgba(14,59,51,.82) 52%,rgba(11,26,23,.68) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  padding:64px 0 68px;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.cat-hero-inner{position:relative;z-index:2;max-width:900px}
.breadcrumb-line{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(247,246,241,.7);margin-bottom:22px}
.breadcrumb-line a:hover{color:var(--lime)}
.breadcrumb-line span.sep{opacity:.5}
.breadcrumb-line .now{color:#F7F6F1}
.cat-hero h1{color:#FFFFFF;margin-bottom:18px}
.cat-hero-sub{font-size:17px;line-height:1.8;color:rgba(247,246,241,.86);max-width:640px;margin-bottom:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px 40px;padding-top:26px;border-top:1px solid rgba(247,246,241,.18)}
.hero-stats li{display:flex;align-items:baseline;gap:10px}
.hero-stats strong{
  font-family:Inter,system-ui,sans-serif;font-size:30px;font-weight:800;
  color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.hero-stats span{font-size:13.5px;color:rgba(247,246,241,.72)}
.hero-note{margin-top:20px;font-size:12.5px;color:rgba(247,246,241,.55)}

/* ---------- 左窄右宽主体 ---------- */
.side-col{position:relative}
.side-nav{position:sticky;top:136px;display:flex;flex-direction:column}
.side-nav-title{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-family:Inter,system-ui,sans-serif;margin-bottom:14px}
.side-nav a{
  display:block;padding:12px 0 12px 18px;border-left:3px solid var(--line);
  font-size:15px;color:var(--muted);
}
.side-nav a:hover{color:var(--brand-900);border-left-color:var(--brand-500)}
.side-nav a.active{color:var(--brand-900);font-weight:700;border-left-color:var(--lime)}
.data-stream{border-top:1px solid var(--line)}
.stream-item{
  display:grid;grid-template-columns:160px 1fr auto;gap:24px;align-items:start;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.stream-item img{width:160px;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);transition:transform .42s var(--ease)}
.stream-item:hover img{transform:scale(1.03)}
.stream-body h3{font-size:19px;margin-bottom:8px}
.stream-body p{color:var(--muted);font-size:15.5px;line-height:1.8;margin:0}
.stream-tag{
  font-family:Inter,system-ui,sans-serif;font-size:12px;letter-spacing:.06em;
  color:var(--brand-500);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:5px 12px;white-space:nowrap;background:var(--paper-2);align-self:start;
}

/* ---------- 深色数据带 ---------- */
.stats-band{background:var(--brand-900);color:#E9EDE9;padding:92px 0}
.stats-band h2{color:#FFFFFF}
.stats-band .eyebrow{margin-bottom:18px}
.band-lead{color:rgba(233,237,233,.72);max-width:680px;margin:16px 0 48px}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.band-item{border-top:1px solid rgba(233,237,233,.2);padding-top:22px}
.band-item strong{
  display:block;font-family:Inter,system-ui,sans-serif;font-size:clamp(30px,3.4vw,42px);
  font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
}
.band-item span{display:block;margin-top:10px;font-size:14px;color:rgba(233,237,233,.68);line-height:1.7}

/* ---------- 交错图文 ---------- */
.split-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:64px}
.split-row:last-child{margin-bottom:0}
.split-row.reverse .split-media{order:2}
.split-media img{border-radius:var(--radius-img);aspect-ratio:16/11;object-fit:cover;box-shadow:var(--shadow-1)}
.split-body h3{margin-bottom:14px}
.split-body p{color:var(--muted);font-size:16px}
.dot-list{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.dot-list li{position:relative;padding-left:22px;font-size:15.5px;color:var(--text)}
.dot-list li::before{content:"";position:absolute;left:0;top:.68em;width:9px;height:9px;background:var(--lime);border-radius:2px}

/* ---------- 步骤流程 ---------- */
.step-list{border-top:1px solid var(--line);margin-top:8px}
.step-item{display:grid;grid-template-columns:96px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line)}
.step-num{
  font-family:Inter,system-ui,sans-serif;font-size:44px;font-weight:800;line-height:1;
  color:rgba(14,59,51,.16);font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{color:var(--muted);font-size:15.5px;margin:0}

/* ---------- FAQ ---------- */
.faq-list{max-width:920px}
.faq-item{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .26s var(--ease);
}
.faq-item[open]{border-color:var(--brand-500)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;position:relative;
  font-size:17px;font-weight:700;color:var(--brand-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:4px;
  background:transparent;border-radius:0 3px 3px 0;transition:background-color .26s var(--ease);
}
.faq-item[open] summary::before{background:var(--lime)}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand-500);line-height:1;
  transition:transform .3s var(--ease),color .3s var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);color:var(--brand-900)}
.faq-answer{padding:0 24px 22px;color:var(--muted);font-size:15.5px;max-width:780px}

/* ---------- CTA 带 ---------- */
.cta-wrap{padding:0 0 var(--section-y)}
.cta-inner{
  background:var(--lime);color:var(--brand-900);border-radius:16px;
  padding:56px;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:start;
}
.cta-inner h2{color:var(--brand-900);margin-bottom:14px}
.cta-inner p{color:rgba(11,26,23,.78);font-size:16px;max-width:460px}
.cta-form{display:grid;gap:20px}
.form-row{display:grid;gap:6px}
.form-row label{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:700;color:rgba(11,26,23,.62);font-family:Inter,system-ui,sans-serif}
.form-line{
  width:100%;background:transparent;border:none;border-bottom:1px solid rgba(11,26,23,.32);
  border-radius:0;padding:10px 2px;font-size:16px;font-family:inherit;color:var(--brand-900);
}
.form-line::placeholder{color:rgba(11,26,23,.4)}
.form-line:focus{outline:none;border-bottom-color:var(--brand-900)}
.form-note{font-size:12.5px;color:rgba(11,26,23,.6);margin-top:4px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#E9EDE9;padding:76px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.25fr 1.25fr;gap:44px}
.site-footer h4{color:#FFFFFF;font-size:16px;margin-bottom:18px}
.site-footer p{color:rgba(233,237,233,.7);font-size:14.5px;line-height:1.85;max-width:340px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14.5px;color:rgba(233,237,233,.72);position:relative;padding-bottom:2px}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--lime);
  transition:width .3s var(--ease);
}
.footer-links a:hover{color:#FFFFFF}
.footer-links a:hover::after{width:100%}
.footer-contact li{display:flex;gap:12px;font-size:14.5px;color:rgba(233,237,233,.72);margin-bottom:12px;line-height:1.7}
.footer-contact i{color:var(--lime);font-size:14px;margin-top:6px;flex-shrink:0}
.footer-bottom{
  border-top:1px solid rgba(233,237,233,.14);margin-top:52px;padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(233,237,233,.58);
}

/* ---------- 进入动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .hero-stats strong{font-size:27px}
}
@media (max-width:1199px){
  :root{--section-y:88px}
  h1{font-size:clamp(28px,3.4vw,36px)}
  .container{padding-left:26px;padding-right:26px}
  .band-grid{gap:24px}
  .side-nav a{font-size:14.5px}
}
@media (max-width:991px){
  :root{--section-y:72px}
  .topbar-tagline{display:none}
  .hamburger-btn{display:inline-flex}
  .topbar-inner{gap:14px;height:60px}
  .site-header.is-scrolled .topbar-inner{height:56px}
  .brand-logo{font-size:18px}
  .side-col{margin-bottom:34px}
  .side-nav{position:static;flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:6px;scrollbar-width:none}
  .side-nav::-webkit-scrollbar{display:none}
  .side-nav-title{display:none}
  .side-nav a{
    border:1px solid var(--line);border-radius:var(--radius-pill);
    padding:9px 18px;white-space:nowrap;background:var(--paper-2);color:var(--brand-700);
  }
  .side-nav a.active{background:var(--brand-700);color:#F7F6F1;border-color:var(--brand-700)}
  .split-row{grid-template-columns:1fr;gap:28px;margin-bottom:52px}
  .split-row.reverse .split-media{order:0}
  .cta-inner{grid-template-columns:1fr;gap:36px;padding:44px 32px}
  .band-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding-left:20px;padding-right:20px}
  .cat-hero{padding:44px 0 52px}
  .cat-hero-sub{font-size:16px}
  .hero-stats{gap:12px 26px}
  .hero-stats strong{font-size:24px}
  .stream-item{grid-template-columns:1fr;gap:16px;padding:24px 0}
  .stream-item img{width:100%;aspect-ratio:16/9}
  .stream-tag{justify-self:start}
  .step-item{grid-template-columns:1fr;gap:10px;padding:24px 0}
  .step-num{font-size:34px}
  .btn{width:100%}
  .cta-actions .btn,.search-field .btn{width:auto}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575px){
  .band-grid{grid-template-columns:1fr;gap:0}
  .band-item{padding:20px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-inner{padding:34px 22px}
  .faq-item summary{font-size:16px;padding:18px 48px 18px 18px}
  .search-field{flex-wrap:wrap}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand-700:#0E3B33;
  --brand-900:#0B1A17;
  --brand-500:#175B4C;
  --lime:#CDF24A;
  --flame:#F0562A;
  --paper:#F7F6F1;
  --paper-2:#FFFFFF;
  --line:#E3E1D8;
  --text:#12211E;
  --muted:#6B7A75;
  --radius-card:10px;
  --radius-img:12px;
  --radius-btn:8px;
  --shadow-1:0 1px 2px rgba(11,26,23,.05);
  --shadow-2:0 14px 34px -14px rgba(11,26,23,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:320ms;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--brand-900);letter-spacing:-.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px}

.container{max-width:1240px!important;padding-left:32px;padding-right:32px}
@media (max-width:767.98px){.container{padding-left:20px;padding-right:20px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -20px rgba(11,26,23,.7)}
.brand-row{display:flex;align-items:center;gap:18px;height:72px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .brand-row{height:60px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;font-size:21px;font-weight:800;letter-spacing:-.01em;color:var(--brand-900);white-space:nowrap}
.brand-logo:hover{color:var(--brand-500)}
.logo-mark{position:relative;flex:none;width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--brand-700),var(--brand-500))}
.logo-mark::after{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--lime)}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-toggle{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--paper-2);
  color:var(--brand-700);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.search-toggle:hover{border-color:var(--brand-700);background:var(--paper)}
.search-panel{display:none;padding:0 0 16px}
.search-panel.is-open{display:block}
.search-panel form{display:flex;gap:10px;align-items:center;max-width:560px}
.search-panel input{
  flex:1;border:0;border-bottom:2px solid var(--line);background:transparent;
  padding:10px 2px;font-size:15px;color:var(--text);
}
.search-panel input:focus{outline:none;border-color:var(--brand-700)}

.tabs-row{border-top:1px solid var(--line);background:var(--paper-2)}
.tabs-scroll{position:relative}
.main-nav{
  display:flex;align-items:center;gap:10px;height:46px;
  overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;
}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{
  flex:none;scroll-snap-align:start;
  padding:7px 18px;border-radius:999px;border:1px solid var(--line);
  font-size:14.5px;line-height:1.4;color:var(--brand-700);white-space:nowrap;
}
.main-nav a:hover{background:var(--brand-700);color:var(--paper);border-color:var(--brand-700)}
.main-nav a.active{background:var(--brand-700);color:var(--paper);border-color:var(--brand-700);font-weight:600}
@media (max-width:991.98px){
  .tabs-scroll{mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%)}
}

/* ============ buttons ============ */
.btn-brand,.btn-ghost,.btn-lime,.btn-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-brand{background:var(--brand-700);color:var(--paper);border-color:var(--brand-700)}
.btn-brand:hover{background:var(--lime);color:var(--brand-900);border-color:var(--lime);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-700);color:var(--paper)}
.btn-lime{background:var(--lime);color:var(--brand-900);border-color:var(--lime)}
.btn-lime:hover{background:var(--brand-900);color:var(--lime);border-color:var(--brand-900)}
.btn-dark{background:var(--brand-900);color:var(--lime);border-color:var(--brand-900)}
.btn-dark:hover{background:transparent;color:var(--brand-900);border-color:var(--brand-900)}
.btn-brand:active,.btn-ghost:active,.btn-lime:active,.btn-dark:active{transform:translateY(1px)}

/* ============ hero ============ */
.kb-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);
  border-bottom:1px solid var(--line);
  padding:44px 0 72px;
}
.breadcrumb-line{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13.5px;color:var(--muted);margin-bottom:28px}
.breadcrumb-line a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px}
.breadcrumb-line .sep{color:#C8C6BC}
.breadcrumb-line .current{color:var(--brand-700);font-weight:600}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:"Inter",system-ui,sans-serif;font-size:12px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--brand-500);
  background:var(--paper-2);border:1px solid var(--line);border-radius:999px;padding:6px 14px;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(205,242,74,.35)}
.kb-hero h1{
  margin:20px 0 18px;
  font-size:clamp(32px,4.6vw,54px);
  line-height:1.14;letter-spacing:-.02em;font-weight:900;
}
.lead-text{max-width:720px;font-size:17px;color:var(--muted)}
.kb-search{display:flex;gap:14px;align-items:flex-end;max-width:640px;margin:30px 0 22px}
.kb-search .field{flex:1}
.kb-search label{display:block;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.kb-search input{
  width:100%;border:0;border-bottom:2px solid var(--line);background:transparent;
  padding:10px 2px;font-size:15.5px;color:var(--text);
  transition:border-color var(--dur) var(--ease);
}
.kb-search input:focus{outline:none;border-color:var(--brand-700)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;
  padding:7px 15px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper-2);font-size:13.5px;color:var(--brand-500);
}
.chip:hover{background:var(--brand-700);color:var(--paper);border-color:var(--brand-700)}
.hero-side-card{
  margin:0;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
}
.hero-side-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-side-card figcaption{padding:16px 18px;font-size:14px;color:var(--muted)}

/* ============ 知识库主体 ============ */
.kb-layout{padding:76px 0 88px}
.section-head{margin-bottom:32px}
.section-head h2{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.25}
.section-head p{max-width:720px;margin-top:12px;color:var(--muted)}

.kb-item{
  position:relative;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);margin-bottom:14px;overflow:hidden;
  transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.kb-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--lime);
  transform:scaleY(0);transform-origin:top;transition:transform 340ms var(--ease);
}
.kb-item:hover{border-color:#D3D1C6}
.kb-item[open]{box-shadow:var(--shadow-1)}
.kb-item[open]::before{transform:scaleY(1)}
.kb-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 60px 22px 26px;
}
.kb-item summary::-webkit-details-marker{display:none}
.kb-item summary::after{
  content:"+";position:absolute;right:24px;top:50%;
  transform:translateY(-50%);
  font-size:22px;line-height:1;color:var(--brand-500);font-weight:400;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.kb-item[open] summary::after{transform:translateY(-50%) rotate(45deg);color:var(--brand-700)}
.kb-q{font-size:18.5px;font-weight:700;line-height:1.5;margin-bottom:6px}
.kb-excerpt{font-size:14.5px;line-height:1.7;color:var(--muted);margin:0}
.kb-body{padding:4px 26px 24px;border-top:1px dashed var(--line);margin-top:2px}
.kb-body p{margin-top:16px;color:#2C3B37;font-size:15.5px}
.kb-points{margin-top:14px;display:grid;gap:8px}
.kb-points li{position:relative;padding-left:20px;font-size:15.5px;color:#2C3B37}
.kb-points li::before{content:"";position:absolute;left:0;top:.72em;width:9px;height:9px;border-radius:2px;background:var(--lime)}
.kb-meta{margin-top:18px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;font-size:13px;color:var(--muted)}
.badge-cat{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(14,59,51,.08);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.badge-flame{background:rgba(240,86,42,.1);color:var(--flame)}

/* 侧栏 */
.side-sticky{position:sticky;top:140px}
.panel{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;margin-bottom:18px}
.panel h3{font-size:16px;font-weight:700;margin-bottom:14px}
.toc-list a{
  display:block;padding:9px 0 9px 14px;border-left:2px solid var(--line);
  font-size:14.5px;color:var(--muted);line-height:1.6;
}
.toc-list a:hover{color:var(--brand-700);border-left-color:var(--lime)}
.side-cta{background:var(--brand-900);border-color:var(--brand-900)}
.side-cta h3{color:var(--paper)}
.side-cta p{color:#B7C4C0;font-size:14.5px}
.side-cta .btn-lime{width:100%;margin-top:14px}

/* ============ 步骤 ============ */
.step-section{padding:88px 0;background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step-list li{position:relative;padding:26px 0 26px 0;border-top:1px solid var(--line)}
.step-list li:last-child{border-bottom:1px solid var(--line)}
.step-inner{display:flex;gap:28px;align-items:flex-start}
.step-num{
  flex:none;font-family:"Inter",system-ui,sans-serif;font-weight:700;
  font-size:clamp(30px,3.4vw,44px);line-height:1;letter-spacing:-.03em;
  color:#DCE5E1;font-variant-numeric:tabular-nums;min-width:64px;
}
.step-inner h3{font-size:20px;font-weight:700;margin-bottom:8px}
.step-inner p{color:var(--muted);font-size:15.5px;max-width:760px;margin:0}

/* ============ 横向条带 ============ */
.strip-section{padding:88px 0}
.strip{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 18px;margin:0 -4px;
  scrollbar-width:thin;
}
.strip::-webkit-scrollbar{height:6px}
.strip::-webkit-scrollbar-thumb{background:#D9D7CC;border-radius:999px}
.strip-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.strip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.strip-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 420ms var(--ease)}
.strip-card:hover img{transform:scale(1.03)}
.strip-body{padding:18px 20px 22px}
.strip-body h3{font-size:17.5px;font-weight:700;line-height:1.5;margin:10px 0 8px}
.strip-body p{font-size:14.5px;color:var(--muted);margin:0}
.strip-foot{margin-top:14px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}

/* ============ 数据条带 ============ */
.data-band{
  padding:88px 0;color:var(--paper);
  background:linear-gradient(rgba(11,26,23,.92),rgba(11,26,23,.95)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.data-band h2{color:var(--paper);font-size:clamp(24px,2.6vw,34px);font-weight:800}
.data-band .band-note{margin-top:12px;color:#A9BAB5;max-width:680px;font-size:15px}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:44px}
.data-cell{border-top:1px solid rgba(247,246,241,.22);padding-top:20px}
.data-num{
  font-family:"Inter",system-ui,sans-serif;font-weight:700;
  font-size:clamp(30px,3.4vw,42px);line-height:1;color:var(--lime);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.data-num .suffix{font-size:.5em;margin-left:4px;color:var(--lime)}
.data-label{margin-top:12px;font-size:14.5px;color:#C8D4D0}

/* ============ CTA ============ */
.cta-band{background:var(--lime);color:var(--brand-900);padding:78px 0}
.cta-band h2{font-size:clamp(26px,3vw,38px);font-weight:800;color:var(--brand-900)}
.cta-band .cta-desc{max-width:560px;margin-top:14px;font-size:16px;color:#20372F}
.cta-form{margin-top:6px}
.cta-form .field{position:relative;margin-bottom:22px}
.cta-form input,.cta-form textarea{
  width:100%;border:0;border-bottom:1.5px solid rgba(11,26,23,.35);background:transparent;
  padding:16px 2px 8px;font-size:15.5px;color:var(--brand-900);resize:none;
  transition:border-color var(--dur) var(--ease);
}
.cta-form input:focus,.cta-form textarea:focus{outline:none;border-color:var(--brand-900)}
.cta-form label{
  position:absolute;left:2px;top:15px;font-size:15px;color:rgba(11,26,23,.62);
  pointer-events:none;transition:top var(--dur) var(--ease),font-size var(--dur) var(--ease),color var(--dur) var(--ease);
}
.cta-form input:focus+label,
.cta-form input:not(:placeholder-shown)+label,
.cta-form textarea:focus+label,
.cta-form textarea:not(:placeholder-shown)+label{top:-6px;font-size:12px;color:var(--brand-900);letter-spacing:.04em}
.cta-privacy{margin-top:16px;font-size:13px;color:rgba(11,26,23,.66)}

/* ============ footer ============ */
.site-footer{background:var(--brand-900);color:#D5DEDA;padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.1fr 1.1fr;gap:36px;padding-bottom:44px;border-bottom:1px solid rgba(247,246,241,.14)}
.site-footer h4{color:var(--paper);font-size:16.5px;font-weight:700;margin-bottom:16px}
.site-footer p{color:#A9BAB5;font-size:14.5px;line-height:1.85}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#C8D4D0;font-size:14.5px}
.footer-links a:hover{color:var(--lime)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:#C8D4D0;font-size:14.5px;margin-bottom:12px}
.footer-contact i{color:var(--lime);margin-top:5px;width:16px;text-align:center;flex:none}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding-top:22px;font-size:13.5px;color:#8FA29C}

/* ============ 动效 ============ */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

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

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .brand-logo{font-size:20px}
  .strip-card{flex:0 0 300px}
}
@media (max-width:991.98px){
  body{font-size:16px}
  .kb-hero{padding:34px 0 56px}
  .kb-layout,.step-section,.strip-section,.data-band{padding:64px 0}
  .side-sticky{position:static;margin-top:34px}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .cta-band{padding:64px 0}
}
@media (max-width:767.98px){
  .brand-logo{font-size:18px}
  .brand-row{height:64px;gap:12px}
  .site-header.is-scrolled .brand-row{height:58px}
  .search-panel form{flex-direction:column;align-items:stretch}
  .step-inner{flex-direction:column;gap:12px}
  .step-num{min-width:auto}
  .step-list li{padding:22px 0}
  .strip-card{flex:0 0 84%}
  .kb-search{flex-direction:column;align-items:stretch;gap:16px}
  .kb-search .btn-lime{width:100%}
}
@media (max-width:575.98px){
  .kb-hero h1{font-size:30px}
  .data-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .kb-item summary{padding:18px 52px 18px 20px}
  .kb-body{padding:4px 20px 22px}
  .btn-brand,.btn-ghost,.btn-lime,.btn-dark{width:100%}
  .brand-actions .btn-brand{width:auto}
}