/* roulang page: index */
:root{
  --c-primary:#1B4F8C;
  --c-primary-strong:#123A6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#0EA5A0;
  --c-accent-strong:#0B8A86;
  --c-warm:#F2994A;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A98AB;
  --c-ok:#17A673;
  --c-warn:#E0A22B;
  --c-error:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,79,140,.06);
  --sh-hover:0 12px 32px rgba(27,79,140,.12);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block;}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--c-text);font-weight:700;}
h1{font-size:40px;line-height:1.2;}
h2{font-size:30px;line-height:1.32;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--c-primary-strong);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{max-width:1120px;margin:0 auto;padding:0 32px;}

/* 品牌 */
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary-strong);font-weight:700;}
.brand svg{width:24px;height:24px;flex:0 0 24px;color:var(--c-primary);}
.brand-text{font-size:16px;letter-spacing:.2px;line-height:1.3;}
.brand:hover{color:var(--c-primary-strong);}

/* 布局外壳 */
.page{margin-left:var(--sidebar-w);}
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:#fff;border-right:1px solid var(--c-line);
  padding:24px 18px;display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;z-index:60;
}
.sidebar .brand{padding:0 6px 4px;}
.nav-main{display:flex;flex-direction:column;gap:2px;}
.nav-item{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 10px;
  border-radius:8px;font-size:15px;color:var(--c-text-2);position:relative;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item svg{width:18px;height:18px;stroke-width:1.5;flex:0 0 18px;}
.nav-item:hover{background:var(--c-bg-alt);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary-strong);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:-18px;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.nav-group-title{font-size:12px;color:var(--c-text-3);padding:0 10px;margin-bottom:8px;letter-spacing:.06em;}
.nav-sub{display:block;font-size:14px;color:var(--c-text-2);padding:8px 10px 8px 22px;border-radius:8px;transition:background .18s ease-out,color .18s ease-out;}
.nav-sub:hover{background:var(--c-bg-alt);color:var(--c-primary);}
.nav-sub.is-active{color:var(--c-primary-strong);font-weight:600;background:var(--c-primary-soft);}
.side-cta{margin-top:auto;background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;}
.side-cta p{font-size:13px;line-height:1.6;color:var(--c-text-2);margin-bottom:12px;}
.side-cta .btn{width:100%;}

/* 顶栏与抽屉（移动） */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  background:#fff;border-bottom:1px solid var(--c-line);align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar .brand-text{font-size:15px;}
.menu-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:10px;color:var(--c-primary-strong);
}
.menu-btn svg{width:20px;height:20px;}
.mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;pointer-events:none;
  transition:opacity .22s ease-out;z-index:55;
}
.mask.is-open{opacity:1;pointer-events:auto;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-strong);color:#fff;transform:translateY(-1px);}
.btn-accent:active{transform:none;}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-strong);}
.btn-sm{height:40px;padding:0 18px;font-size:15px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.link-more{font-weight:600;font-size:15px;white-space:nowrap;}
.link-more:hover{color:var(--c-accent);text-decoration:underline;}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:1;background:var(--c-primary-soft);color:var(--c-primary);white-space:nowrap;
}
.badge-warm{background:#FDF1E4;color:#B96A1E;}
.badge-ok{background:#E6F6F0;color:#0F7A56;}

/* 板块 */
.section{padding:96px 0;}
.section-alt{background:var(--c-bg-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary);
}
.section-sub{font-size:15px;color:var(--c-text-2);margin:8px 0 0;max-width:640px;}

/* Hero */
.hero{padding:88px 0 96px;background:var(--c-bg-alt);border-bottom:1px solid var(--c-line);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{color:var(--c-primary-strong);}
.hero-sub{font-size:17px;line-height:1.8;color:var(--c-text-2);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:36px;border-top:1px solid var(--c-line);padding-top:24px;}
.point-num{display:block;font-size:18px;font-weight:700;color:var(--c-accent);line-height:1.2;}
.point-label{display:block;font-size:12px;color:var(--c-text-3);margin-top:4px;}
.hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--sh-card);background:var(--c-primary-soft);}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img);}
.hero-badge{
  position:absolute;top:14px;right:14px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(232,240,250,.94);color:var(--c-primary);font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;
}

/* 流程卡 */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.flow-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 24px 24px;box-shadow:var(--sh-card);
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.flow-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.flow-num{
  width:48px;height:48px;border-radius:12px;background:rgba(14,165,160,.12);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin-bottom:18px;
}
.flow-card h3{margin-bottom:10px;}
.flow-card p{font-size:15px;color:var(--c-text-2);margin:0;}
.flow-arrow{
  position:absolute;right:-18px;top:50%;transform:translateY(-50%);
  width:12px;height:12px;border-top:2px solid var(--c-line);border-right:2px solid var(--c-line);
  rotate:45deg;
}
.flow-card:last-child .flow-arrow{display:none;}

/* 服务范围 */
.service-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 40px;}
.service-item{display:flex;gap:14px;padding:20px 0;border-bottom:1px solid var(--c-line);}
.service-item svg{width:22px;height:22px;flex:0 0 22px;color:var(--c-primary);stroke-width:1.5;margin-top:4px;}
.service-item h3{font-size:18px;margin-bottom:6px;}
.service-item p{font-size:15px;color:var(--c-text-2);margin:0;}

/* 案例 */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.case-main{margin:0;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-main figcaption{padding:22px 24px;}
.case-main figcaption h3{margin:10px 0 8px;}
.case-main figcaption p{font-size:15px;color:var(--c-text-2);margin:0;}
.case-side{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.case-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-card);transition:box-shadow .18s ease-out,transform .18s ease-out;}
.case-item:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.case-item h4{font-size:16px;margin:10px 0 8px;}
.case-item p{font-size:14px;color:var(--c-text-2);margin:0;line-height:1.7;}
.case-more{margin-top:20px;text-align:right;}

/* 分类入口 */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.cat-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);color:inherit;
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.cat-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#D3E0F0;color:inherit;}
.cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cat-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.cat-card-body h3{font-size:19px;}
.cat-card-body p{font-size:14px;color:var(--c-text-2);margin:0;line-height:1.7;}
.cat-card-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary);}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{position:relative;padding-left:16px;margin-bottom:14px;}
.faq-side h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary);}
.faq-side p{font-size:15px;color:var(--c-text-2);}
.faq-panel{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;text-align:left;padding:20px 24px;
  font-size:18px;font-weight:600;color:var(--c-text);transition:color .18s ease-out;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:opacity .2s ease-out,transform .2s ease-out;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.is-open .faq-icon::after{opacity:0;transform:scaleY(.2);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out;}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a p{padding:0 24px 22px;font-size:16px;color:var(--c-text-2);margin:0;}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start;}
.news-feature{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:box-shadow .18s ease-out,transform .18s ease-out;}
.news-feature:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-feature-body{padding:22px 24px;}
.news-feature-body h3{margin:12px 0 10px;font-size:21px;}
.news-feature-body h3 a{color:inherit;}
.news-feature-body h3 a:hover{color:var(--c-primary);text-decoration:underline;}
.news-excerpt{font-size:15px;color:var(--c-text-2);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-list li{padding:16px 0;border-bottom:1px solid var(--c-line);}
.news-list li:first-child{padding-top:0;}
.news-list li:last-child{border-bottom:0;}
.news-list h4{font-size:16px;margin-bottom:8px;}
.news-list h4 a{color:inherit;}
.news-list h4 a:hover{color:var(--c-primary);text-decoration:underline;}
.meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--c-text-3);}
.empty-state{
  background:var(--c-bg-alt);border:1px dashed var(--c-line);border-radius:var(--r-card);
  padding:40px 24px;text-align:center;
}
.empty-state svg{width:24px;height:24px;color:var(--c-text-3);margin:0 auto 12px;stroke-width:1.5;}
.empty-state strong{display:block;font-size:14px;font-weight:600;color:var(--c-text-2);}
.empty-state span{display:block;font-size:12px;color:var(--c-text-3);margin-top:4px;}

/* CTA */
.cta{background:var(--c-primary-soft);padding:72px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.cta h2{margin-bottom:12px;}
.cta p{font-size:16px;color:var(--c-text-2);max-width:460px;}
.cta-note{font-size:13px;color:var(--c-text-3);margin-top:16px;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-card);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-text-2);margin-bottom:8px;}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(27,79,140,.14);
}
.field.has-error input,.field.has-error select{border-color:var(--c-error);}
.field-error{display:none;font-size:12px;color:var(--c-error);margin-top:6px;}
.field.has-error .field-error{display:block;}
.form-tip{font-size:14px;margin-top:14px;display:none;}
.form-tip.is-ok{display:block;color:var(--c-ok);}
.form-tip.is-err{display:block;color:var(--c-error);}

/* 页脚 */
.site-footer{background:var(--c-primary-strong);color:rgba(255,255,255,.8);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.site-footer .brand{color:#fff;}
.site-footer .brand svg{color:#fff;}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.8);}
.site-footer li{margin-bottom:10px;}
.site-footer a{color:rgba(255,255,255,.7);font-size:14px;}
.site-footer a:hover{color:#fff;text-decoration:underline;}
.footer-mail{font-size:14px;color:rgba(255,255,255,.8);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 24px;font-size:13px;color:rgba(255,255,255,.6);}

/* 响应式 */
@media (max-width:1199px){
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .hero-grid{gap:40px;}
}
@media (max-width:991px){
  .page{margin-left:0;padding-top:56px;}
  .topbar{display:flex;}
  .sidebar{
    left:auto;right:0;top:0;bottom:0;width:84vw;max-width:320px;
    transform:translateX(100%);transition:transform .28s ease-out;
    border-right:0;border-left:1px solid var(--c-line);box-shadow:-12px 0 32px rgba(15,27,45,.16);
  }
  .sidebar.is-open{transform:translateX(0);}
  .sidebar .nav-item.is-active::before{left:-18px;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-media{max-height:260px;order:-1;}
  .section{padding:72px 0;}
  .flow-grid{grid-template-columns:1fr;gap:16px;}
  .flow-arrow{display:none;}
  .service-list{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:24px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  h1{font-size:28px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:28px;}
  .cat-grid{grid-template-columns:1fr;}
  .case-side{grid-template-columns:1fr;}
  .faq-q{padding:16px;}
  .faq-a p{padding:0 16px 18px;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%;}
  .hero-points{gap:24px;}
  .flow-num{width:42px;height:42px;font-size:18px;}
  .news-feature-body{padding:18px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B4F8C;
  --c-primary-strong:#123A6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#0EA5A0;
  --c-warm:#F2994A;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A98AB;
  --c-ok:#17A673;
  --c-warn:#E0A22B;
  --c-error:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,79,140,.06);
  --sh-2:0 12px 32px rgba(27,79,140,.12);
  --sidebar-w:240px;
  --gap-block:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--c-primary-strong)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--c-text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 移动端顶部导航条 ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:60;
  height:56px;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-primary-strong);font-weight:700}
.brand svg{width:24px;height:24px;flex:0 0 24px;color:var(--c-primary)}
.brand-text{font-size:16px;font-weight:700;color:var(--c-primary-strong);letter-spacing:.2px}
.menu-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:#fff;color:var(--c-primary);
}
.menu-btn:hover{background:var(--c-primary-soft)}
.menu-btn svg{width:22px;height:22px}

/* ---------- 左侧竖栏 ---------- */
.sidebar{
  position:fixed;
  top:0;
  left:0;
  z-index:70;
  width:var(--sidebar-w);
  height:100vh;
  background:#fff;
  border-right:1px solid var(--c-line);
  display:flex;
  flex-direction:column;
  padding:22px 16px 18px;
  overflow-y:auto;
}
.sidebar-brand{padding:0 8px 18px;border-bottom:1px solid var(--c-line)}
.sidebar-brand .brand-text{font-size:16px}
.sidebar-nav{margin-top:18px;display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 12px;
  border-radius:var(--r-btn);
  color:var(--c-text-2);
  font-size:14.5px;
  font-weight:500;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item svg{width:18px;height:18px;stroke-width:1.5px;flex:0 0 18px;color:var(--c-text-3)}
.nav-item:hover{background:var(--c-bg-alt);color:var(--c-primary)}
.nav-item:hover svg{color:var(--c-primary)}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-strong);font-weight:600}
.nav-item.active svg{color:var(--c-primary)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.nav-group-title{
  margin:22px 8px 8px;
  font-size:12px;line-height:20px;letter-spacing:1px;
  color:var(--c-text-3);
}
.nav-sub{padding-left:22px;font-size:14px}
.sidebar-cta{
  margin-top:auto;
  background:var(--c-primary-soft);
  border-radius:var(--r-card);
  padding:16px;
}
.sidebar-cta p{font-size:13px;line-height:22px;color:var(--c-text-2);margin-bottom:12px}
.btn-block{width:100%;justify-content:center}

/* ---------- 遮罩与内容区 ---------- */
.overlay{
  position:fixed;inset:0;z-index:65;
  background:rgba(15,27,45,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.overlay.open{opacity:1;visibility:visible}
.content{margin-left:var(--sidebar-w);min-height:100vh}
.page{padding:40px 0 var(--gap-block)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#0B8B87;color:#fff;transform:translateY(-1px)}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-strong)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;min-height:44px}
.btn-text:hover{color:var(--c-accent);text-decoration:underline}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:22px;padding:0 10px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;line-height:22px;font-weight:600;white-space:nowrap;
}
.badge-warm{background:#FDF1E5;color:#C2701F}
.badge-ok{background:#E7F6EF;color:var(--c-ok)}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:14px;line-height:32px;color:var(--c-text-3);margin-bottom:16px}
.crumbs a{color:var(--c-text-3)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span{margin:0 8px;color:var(--c-line)}

/* ---------- 首屏窄幅图 + 标题条 ---------- */
.page-hero{
  position:relative;
  min-height:270px;
  border-radius:var(--r-img);
  overflow:hidden;
  background-color:var(--c-primary-soft);
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center;
  display:flex;
  align-items:flex-end;
  padding:24px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(18,58,107,.05) 40%,rgba(18,58,107,.42) 100%);
}
.hero-bar{
  position:relative;z-index:2;
  max-width:760px;
  background:rgba(255,255,255,.92);
  border-radius:var(--r-card);
  padding:16px 22px;
  box-shadow:var(--sh-1);
}
.hero-bar h1{font-size:30px;line-height:1.35;font-weight:700;margin-top:10px}
.lead{margin-top:20px;font-size:16px;line-height:1.85;color:var(--c-text-2);max-width:820px}

/* ---------- 指标条 ---------- */
.metrics{
  margin-top:32px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  background:var(--c-bg-alt);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
}
.metric-num{font-size:26px;font-weight:700;color:var(--c-accent);line-height:1.2}
.metric-label{font-size:13px;color:var(--c-text-3);margin-top:6px}
.metric-text{font-size:14px;color:var(--c-text-2);margin-top:8px}

/* ---------- 板块通用 ---------- */
.section{margin-top:var(--gap-block)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:30px;line-height:1.35;font-weight:700;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.section-head p{margin-top:10px;padding-left:16px;font-size:14px;color:var(--c-text-3)}

/* ---------- 左图右文交替 ---------- */
.zigzag{display:flex;flex-direction:column;gap:56px}
.zigzag-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.zigzag-row.reverse .zigzag-media{order:2}
.media-frame{
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-primary-soft);
  aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.zigzag-body h3{font-size:22px;line-height:1.5;font-weight:600;margin-bottom:14px}
.zigzag-body p{color:var(--c-text-2);font-size:16px;line-height:1.85}
.zigzag-body .badge{margin-bottom:14px}

/* ---------- 要点列表 ---------- */
.keypoints{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);
}
.keypoints li{position:relative;padding:14px 0 14px 22px;border-bottom:1px solid var(--c-line)}
.keypoints li:last-child{border-bottom:0;padding-bottom:0}
.keypoints li:first-child{padding-top:0}
.keypoints li::before{
  content:"";position:absolute;left:0;top:24px;
  width:8px;height:8px;border-radius:50%;background:var(--c-primary);
}
.keypoints li:first-child::before{top:10px}
.keypoints strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px}
.keypoints span{font-size:14px;color:var(--c-text-2)}

/* ---------- 相关阅读小条目 ---------- */
.read-list{border-top:1px solid var(--c-line)}
.read-item{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 4px;border-bottom:1px solid var(--c-line);
  transition:background .18s ease-out;
}
.read-item:hover{background:var(--c-bg-alt)}
.read-main{display:flex;flex-direction:column;gap:6px;min-width:0}
.read-title{font-size:16px;font-weight:600;color:var(--c-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.read-item:hover .read-title{color:var(--c-primary);text-decoration:underline}
.read-meta{font-size:12px;color:var(--c-text-3);display:flex;align-items:center;gap:10px}
.read-item time{font-size:12px;color:var(--c-text-3);white-space:nowrap}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-intro p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--c-text-2)}
.faq-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:0 24px;box-shadow:var(--sh-1)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:18px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-icon{
  position:relative;flex:0 0 20px;width:20px;height:20px;border-radius:50%;
  background:var(--c-primary-soft);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:5px;right:5px;top:9.5px;height:1.5px;background:var(--c-primary);
  transition:transform .2s ease-out;
}
.faq-icon::after{transform:rotate(90deg)}
.faq-item[open] .faq-icon::after{transform:rotate(0)}
.faq-answer{padding:0 0 20px;font-size:16px;line-height:1.85;color:var(--c-text-2)}

/* ---------- CTA ---------- */
.cta{
  margin-top:var(--gap-block);
  background:var(--c-primary-soft);
  border-radius:var(--r-card);
  padding:48px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
}
.cta h2{font-size:30px;font-weight:700;line-height:1.35}
.cta p{margin-top:14px;font-size:16px;color:var(--c-text-2);line-height:1.85}
.cta-side{display:flex;flex-direction:column;gap:14px}
.cta-note{font-size:13px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-strong);color:rgba(255,255,255,.8);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-top:56px;padding-bottom:40px;
}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.8)}
.site-footer .brand-text{color:#fff}
.site-footer .brand svg{color:#fff}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer li a,.site-footer a{color:rgba(255,255,255,.72);font-size:14px}
.site-footer li a:hover,.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-mail{margin-top:12px;font-size:13px;color:rgba(255,255,255,.66)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding:18px 0;font-size:13px;color:rgba(255,255,255,.66);
  background:var(--c-primary-strong);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cta{grid-template-columns:1fr;gap:28px}
}
@media (max-width:991px){
  .topbar{display:flex}
  .sidebar{
    left:auto;right:0;
    width:84vw;max-width:320px;
    height:100vh;
    transform:translateX(104%);
    transition:transform .24s ease-out;
    box-shadow:var(--sh-2);
    z-index:80;
  }
  .sidebar.open{transform:translateX(0)}
  .content{margin-left:0}
  .page{padding-top:28px}
  .nav-item{min-height:48px;font-size:15px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .zigzag-row{grid-template-columns:1fr;gap:24px}
  .zigzag-row.reverse .zigzag-media{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  :root{--gap-block:72px}
  .page-hero h1,
  .hero-bar h1{font-size:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .section-head h2,.cta h2{font-size:24px}
}
@media (max-width:767px){
  .metrics{grid-template-columns:1fr;gap:16px;padding:20px}
  .keypoints{padding:22px}
  .page-hero{min-height:220px;padding:18px}
  .hero-bar{padding:14px 16px}
  .cta{padding:28px}
  .read-item{flex-direction:column;align-items:flex-start;gap:8px}
  .read-title{white-space:normal}
  .faq-item summary{font-size:16px;padding:16px 0}
  .footer-grid{grid-template-columns:1fr}
  :root{--gap-block:56px}
  .page{padding-bottom:64px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .page-hero h1,.hero-bar h1{font-size:21px}
  .btn{width:100%}
  .btn-text{width:auto}
}

/* roulang page: article */
:root{
  --c-primary:#1B4F8C;
  --c-primary-strong:#123A6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#0EA5A0;
  --c-warm:#F2994A;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A98AB;
  --c-ok:#17A673;
  --c-warn:#E0A22B;
  --c-error:#D9534F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(27,79,140,.06);
  --shadow-hover:0 12px 32px rgba(27,79,140,.12);
  --tr:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--c-primary-strong);text-decoration:underline;}
img{max-width:100%;display:block;}
button{font:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-text);}
p{margin:0;}
ul,ol{margin:0;}
time{font-variant-numeric:tabular-nums;}

.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶栏（移动） ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:50;
  align-items:center;
  justify-content:space-between;
  height:56px;
  padding:0 16px;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--c-primary-strong);
  font-size:16px;
  font-weight:700;
  text-decoration:none;
}
.brand:hover{color:var(--c-primary-strong);text-decoration:none;}
.brand svg{width:24px;height:24px;flex:none;color:var(--c-primary);}
.brand-text{white-space:nowrap;}
.menu-btn{
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius-btn);
  color:var(--c-primary);
  cursor:pointer;
  transition:background var(--tr),border-color var(--tr);
}
.menu-btn:hover{background:var(--c-primary-soft);border-color:var(--c-primary);}
.menu-btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.menu-btn svg{width:22px;height:22px;}

/* ---------- 布局 ---------- */
.layout{display:flex;align-items:flex-start;min-height:100vh;}
.sidebar{
  width:240px;
  flex:0 0 240px;
  height:100vh;
  position:sticky;
  top:0;
  display:flex;
  flex-direction:column;
  gap:20px;
  padding:24px 16px 20px;
  background:#fff;
  border-right:1px solid var(--c-line);
  overflow-y:auto;
}
.sidebar-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(15,27,45,.45);
  opacity:0;
  pointer-events:none;
  transition:opacity var(--tr);
  z-index:55;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px;
  border-left:3px solid transparent;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  transition:background var(--tr),color var(--tr);
}
.nav-item:hover{background:var(--c-bg-alt);color:var(--c-primary);text-decoration:none;}
.nav-item:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.nav-item.active{background:var(--c-primary-soft);border-left-color:var(--c-primary);color:var(--c-primary-strong);font-weight:600;}
.nav-item svg{width:18px;height:18px;flex:none;}
.nav-group-title{
  margin:8px 0 6px;
  padding-left:12px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--c-text-3);
}
.side-cta{
  margin-top:auto;
  padding:16px;
  background:var(--c-primary-soft);
  border-radius:var(--radius-card);
}
.side-cta p{margin-bottom:12px;font-size:13px;line-height:1.6;color:var(--c-text-2);}

.main{flex:1;min-width:0;padding:32px 0 96px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-1px);text-decoration:none;}
.btn-primary:active{transform:none;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#0B8783;color:#fff;transform:translateY(-1px);text-decoration:none;}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-strong);text-decoration:none;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  border-radius:999px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  line-height:1;
  white-space:nowrap;
}
.badge-time{background:var(--c-bg-alt);color:var(--c-text-2);}
.badge-warm{background:#FDF1E4;color:#B96B1F;}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  min-height:32px;
  margin-bottom:16px;
  font-size:14px;
  color:var(--c-text-3);
}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line);}
.crumb .current{color:var(--c-text-3);}

/* ---------- 文章头部 ---------- */
.article-head{max-width:760px;margin-bottom:24px;}
.article-head h1{
  font-size:40px;
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:16px;
  overflow-wrap:anywhere;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--c-text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line);}
.article-cover{
  margin:24px 0 0;
  max-width:760px;
  aspect-ratio:16/9;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--c-primary-soft);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- 文章主体网格 ---------- */
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
  align-items:start;
  margin-top:32px;
}
.article-side{display:flex;flex-direction:column;gap:20px;}

/* ---------- 要点框 ---------- */
.keypoints{
  max-width:760px;
  padding:20px 20px 20px 18px;
  background:var(--c-bg-alt);
  border-left:4px solid var(--c-primary);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  margin-bottom:32px;
}
.keypoints h2{font-size:16px;font-weight:700;margin-bottom:10px;}
.keypoints ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px;}
.keypoints li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.7;
  color:var(--c-text-2);
}
.keypoints li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-primary);
}

/* ---------- 正文排版 ---------- */
.article-body{max-width:760px;font-size:16px;line-height:1.85;color:var(--c-text);}
.article-body p{margin:0 0 16px;}
.article-body h2{
  font-size:24px;
  line-height:1.45;
  font-weight:700;
  margin:40px 0 16px;
  padding-left:12px;
  border-left:3px solid var(--c-primary);
  scroll-margin-top:24px;
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:28px 0 12px;scroll-margin-top:24px;}
.article-body h4{font-size:18px;line-height:1.55;font-weight:600;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 16px;padding-left:20px;}
.article-body li{margin-bottom:8px;}
.article-body blockquote{
  margin:0 0 20px;
  padding:16px;
  background:var(--c-bg-alt);
  border-left:4px solid var(--c-primary);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--c-text-2);
}
.article-body img{border-radius:var(--radius-img);margin:20px auto;}
.article-body figure{margin:20px 0;}
.article-body figcaption{margin-top:8px;text-align:center;font-size:13px;color:var(--c-text-3);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 20px;font-size:14px;}
.article-body th{background:var(--c-primary-soft);text-align:left;font-weight:600;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 12px;}
.article-body a{color:var(--c-primary);text-decoration:underline;}
.article-body a:hover{color:var(--c-accent);}
.article-body code{background:var(--c-bg-alt);border-radius:6px;padding:2px 6px;font-size:14px;}

/* ---------- 侧栏卡 ---------- */
.side-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:20px;
}
.side-card h2{font-size:15px;font-weight:700;margin-bottom:12px;}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px;}
.toc-list a{
  display:block;
  font-size:13px;
  line-height:1.6;
  color:var(--c-text-2);
  padding-left:10px;
  border-left:2px solid var(--c-line);
  transition:color var(--tr),border-color var(--tr);
}
.toc-list a:hover{color:var(--c-primary);border-left-color:var(--c-primary);text-decoration:none;}
.side-card.cta-card{background:var(--c-primary-soft);border-color:transparent;box-shadow:none;}
.side-card.cta-card p{font-size:13px;line-height:1.6;color:var(--c-text-2);margin-bottom:14px;}

/* ---------- 标签 ---------- */
.tag-block{max-width:760px;margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line);}
.tag-block h2{font-size:15px;font-weight:700;margin-bottom:12px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag-list a{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:999px;
  font-size:13px;
  color:var(--c-text-2);
  transition:background var(--tr),color var(--tr),border-color var(--tr);
}
.tag-list a:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);color:var(--c-primary);text-decoration:none;}

/* ---------- 相关推荐 ---------- */
.related{max-width:760px;margin-top:40px;}
.related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:8px;}
.related-head h2{font-size:22px;font-weight:700;}
.related-head a{font-size:14px;color:var(--c-primary);}
.list-item{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:16px 0;
  border-bottom:1px solid var(--c-line);
}
.list-item:first-of-type{border-top:1px solid var(--c-line);}
.list-item a.item-title{font-size:16px;font-weight:600;color:var(--c-text);}
.list-item a.item-title:hover{color:var(--c-primary);text-decoration:underline;}
.list-item .item-meta{margin-left:auto;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--c-text-3);}
.back-row{margin-top:24px;}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:760px;
  padding:40px 24px;
  text-align:center;
  background:var(--c-bg-alt);
  border-radius:var(--radius-card);
}
.empty-state svg{width:24px;height:24px;margin:0 auto 12px;color:var(--c-primary);}
.empty-title{font-size:16px;font-weight:600;margin-bottom:6px;}
.empty-sub{font-size:13px;color:var(--c-text-3);margin-bottom:18px;}

/* ---------- CTA 区 ---------- */
.cta-band{
  margin-top:72px;
  background:var(--c-primary-soft);
  border-radius:var(--radius-card);
  padding:40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-band .cta-copy{max-width:560px;}
.cta-band h2{font-size:28px;font-weight:700;line-height:1.35;margin-bottom:10px;}
.cta-band p{font-size:15px;line-height:1.7;color:var(--c-text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-strong);color:rgba(255,255,255,.8);}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-top:56px;
  padding-bottom:40px;
}
.site-footer .brand{color:#fff;}
.site-footer .brand svg{color:#fff;}
.site-footer p{font-size:14px;line-height:1.8;margin-bottom:10px;}
.footer-mail{color:rgba(255,255,255,.65);}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px;}
.site-footer ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
.site-footer ul a{font-size:14px;color:rgba(255,255,255,.72);}
.site-footer ul a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:18px 0;
  font-size:13px;
  color:rgba(255,255,255,.62);
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-grid{grid-template-columns:minmax(0,760px) 260px;justify-content:space-between;}
  .article-side{position:sticky;top:24px;}
}
@media (max-width:1199px){
  .article-grid{gap:28px;}
}
@media (max-width:991px){
  .topbar{display:flex;}
  .sidebar{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    height:100%;
    width:min(84vw,320px);
    z-index:60;
    transform:translateX(105%);
    transition:transform 240ms ease-out;
    box-shadow:-12px 0 32px rgba(15,27,45,.18);
    padding-top:28px;
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar-mask{display:block;}
  .sidebar-mask.show{opacity:1;pointer-events:auto;}
  .main{padding:24px 0 72px;}
  .cta-band{padding:32px;margin-top:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:48px;}
}
@media (max-width:767px){
  .article-head h1{font-size:28px;line-height:1.36;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .cta-band{padding:24px;border-radius:var(--radius-img);}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .side-card{padding:16px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-text{font-size:15px;}
  .article-head h1{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
  .list-item .item-meta{margin-left:0;width:100%;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1B4F8C;
  --c-primary-strong:#123A6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#0EA5A0;
  --c-warm:#F2994A;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A98AB;
  --c-ok:#17A673;
  --c-warn:#E0A22B;
  --c-error:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,79,140,.06);
  --sh-hover:0 12px 32px rgba(27,79,140,.12);
  --sp:24px;
  --sidebar-w:240px;
  --font:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg-alt);
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms ease-out;}
a:hover{color:var(--c-primary-strong);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

/* ---------- 布局 ---------- */
.layout{min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--c-bg);
  border-right:1px solid var(--c-line);
  display:flex;
  flex-direction:column;
  padding:24px 16px;
  z-index:60;
  overflow-y:auto;
}
.main{margin-left:var(--sidebar-w);min-height:100vh;}
.main-inner{max-width:1200px;margin:0 auto;padding:40px 32px 96px;}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary-strong);text-decoration:none;}
.brand svg{width:24px;height:24px;flex:0 0 auto;stroke:var(--c-primary);}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px;line-height:1.3;}
.brand:hover .brand-text{color:var(--c-primary);}
a.brand:hover{color:var(--c-primary);}

/* ---------- 侧栏导航 ---------- */
.side-nav{margin-top:28px;display:flex;flex-direction:column;gap:4px;}
.side-group{
  font-size:12px;line-height:20px;color:var(--c-text-3);
  margin:18px 0 6px;padding-left:12px;letter-spacing:.4px;
}
.side-link{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px 0 14px;
  border-radius:var(--r-btn);
  font-size:15px;color:var(--c-text-2);
  position:relative;
  transition:background 180ms ease-out,color 180ms ease-out;
}
.side-link svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.side-link:hover{background:var(--c-bg-alt);color:var(--c-primary-strong);}
.side-link.is-active{background:var(--c-primary-soft);color:var(--c-primary-strong);font-weight:600;}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.side-cta{
  margin-top:auto;
  background:var(--c-bg-alt);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:16px;
}
.side-cta p{font-size:13px;line-height:22px;color:var(--c-text-2);margin-bottom:12px;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:56px;padding:0 16px;
  align-items:center;justify-content:space-between;
  background:var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.topbar .brand-text{font-size:15px;}
.menu-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);color:var(--c-primary-strong);
  transition:background 180ms ease-out;
}
.menu-btn:hover{background:var(--c-primary-soft);}
.menu-btn svg{width:24px;height:24px;stroke:currentColor;fill:none;}
.overlay{
  position:fixed;inset:0;background:rgba(15,27,45,.45);
  z-index:55;opacity:0;pointer-events:none;transition:opacity 200ms ease-out;
}
.overlay.show{opacity:1;pointer-events:auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  transition:background 180ms ease-out,color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(27,79,140,.18);}
.btn-primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-strong);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:#0B8A86;color:#fff;transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{font-size:14px;font-weight:600;color:var(--c-primary);}
.link-more:hover{color:var(--c-accent);text-decoration:underline;}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--c-primary);font-weight:600;
  background:var(--c-primary-soft);border-radius:var(--r-pill);
  padding:4px 12px;margin-bottom:16px;
}
.crumb{font-size:14px;line-height:32px;color:var(--c-text-3);}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb span{color:var(--c-text-3);margin:0 6px;}
.sec{margin-top:88px;}
.sec-title{
  position:relative;padding-left:14px;
  font-size:30px;line-height:40px;font-weight:700;color:var(--c-text);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.sec-desc{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 分类页首屏 ---------- */
.page-hero{padding-bottom:32px;}
.page-hero h1{
  font-size:40px;line-height:48px;font-weight:700;letter-spacing:-.3px;
  color:var(--c-text);max-width:900px;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary-strong);}
.hero-sub{margin-top:16px;font-size:17px;line-height:30px;color:var(--c-text-2);max-width:720px;}
.hero-actions{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap;}
.page-banner{
  position:relative;margin-top:36px;
  border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:16/4;background:var(--c-primary-soft);
}
.page-banner img{width:100%;height:100%;object-fit:cover;}
.banner-chip{
  position:absolute;left:24px;bottom:24px;
  background:rgba(255,255,255,.92);
  color:var(--c-primary-strong);
  font-size:14px;font-weight:600;
  padding:10px 18px;border-radius:var(--r-btn);
  box-shadow:0 6px 18px rgba(15,27,45,.10);
}

/* ---------- 卡片栅格 ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px;}
.card{
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-card);
  transition:box-shadow 180ms ease-out,transform 180ms ease-out,border-color 180ms ease-out;
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#D3E0EF;}
.icon-badge{
  width:40px;height:40px;border-radius:var(--r-btn);
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.icon-badge svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:18px;line-height:28px;font-weight:600;color:var(--c-text);}
.card p{font-size:14px;line-height:24px;color:var(--c-text-2);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:22px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:22px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
  white-space:nowrap;
}
.badge.soft{background:var(--c-bg-alt);color:var(--c-text-2);}
.badge.ok{background:rgba(23,166,115,.12);color:var(--c-ok);}
.badge.warm{background:rgba(242,153,74,.16);color:#B96A16;}

/* ---------- 选型对照 ---------- */
.spec-list{margin-top:28px;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.spec-row{
  display:grid;grid-template-columns:130px 1fr auto;
  gap:20px;align-items:center;
  padding:20px 24px;border-bottom:1px solid var(--c-line);
}
.spec-row:last-child{border-bottom:none;}
.spec-row:hover{background:var(--c-bg-alt);}
.tag-label{
  display:inline-flex;align-items:center;justify-content:center;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;
}
.spec-main strong{display:block;font-size:16px;font-weight:600;color:var(--c-text);}
.spec-main span{font-size:14px;color:var(--c-text-2);}

/* ---------- 流程 ---------- */
.flow-wrap{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;margin-top:32px;}
.flow-figure{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--c-primary-soft);}
.flow-figure img{width:100%;height:100%;object-fit:cover;}
.flow-list{display:flex;flex-direction:column;gap:20px;}
.flow-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-bg);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-card);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out;
}
.flow-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step-no{
  flex:0 0 auto;width:34px;height:34px;border-radius:var(--r-pill);
  border:1.5px solid var(--c-accent);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
}
.flow-item h3{font-size:17px;line-height:26px;font-weight:600;}
.flow-item p{font-size:14px;line-height:24px;color:var(--c-text-2);margin-top:4px;}

/* ---------- 相关阅读 ---------- */
.read-list{margin-top:24px;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-card);padding:8px 24px;box-shadow:var(--sh-card);}
.read-item{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 0;border-bottom:1px solid var(--c-line);
}
.read-item:last-child{border-bottom:none;}
.read-item .read-main{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.read-title{font-size:16px;font-weight:600;color:var(--c-text);}
.read-title:hover{color:var(--c-primary);text-decoration:underline;}
.read-item time{font-size:12px;color:var(--c-text-3);white-space:nowrap;}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:28px;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:18px;font-weight:600;color:var(--c-text);text-align:left;
  transition:background 180ms ease-out;
}
.faq-q:hover{background:var(--c-bg-alt);}
.faq-q .sign{flex:0 0 auto;width:20px;height:20px;position:relative;}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform 200ms ease-out,opacity 200ms ease-out;
}
.faq-q .sign::before{left:0;right:0;top:9px;height:2px;}
.faq-q .sign::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.open .faq-q .sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease-out;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:28px;color:var(--c-text-2);}
.faq-item.open .faq-a{max-height:320px;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:88px;
  background:var(--c-primary-soft);
  border-radius:var(--r-card);
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;line-height:36px;font-weight:700;color:var(--c-primary-strong);}
.cta-band p{margin-top:8px;font-size:15px;color:var(--c-text-2);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-strong);color:rgba(255,255,255,.8);}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding:64px 32px 40px;}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.site-footer p{font-size:14px;line-height:24px;color:rgba(255,255,255,.75);margin-bottom:10px;}
.site-footer ul li{margin-bottom:10px;}
.site-footer ul a{font-size:14px;color:rgba(255,255,255,.7);}
.site-footer ul a:hover{color:#fff;text-decoration:underline;}
.site-footer .brand{color:#fff;}
.site-footer .brand svg{stroke:#fff;}
.site-footer .brand .brand-text{color:#fff;}
.footer-mail{color:rgba(255,255,255,.75);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding:18px 0;}
.footer-bottom .container{font-size:13px;color:rgba(255,255,255,.65);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .main-inner{padding:36px 28px 80px;}
  .tool-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .topbar{display:flex;}
  .sidebar{
    left:auto;right:0;width:84vw;max-width:320px;
    transform:translateX(100%);
    transition:transform 240ms ease-out;
    box-shadow:-12px 0 32px rgba(15,27,45,.14);
    padding:20px 16px;
  }
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;}
  .main-inner{padding:28px 20px 72px;}
  .page-hero h1{font-size:30px;line-height:40px;}
  .sec{margin-top:64px;}
  .sec-title{font-size:24px;line-height:34px;}
  .flow-wrap{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 20px 32px;gap:28px;}
  .footer-bottom .container{padding:0 20px;}
  .cta-band{padding:28px;margin-top:64px;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .page-banner{aspect-ratio:16/9;}
  .banner-chip{left:14px;bottom:14px;font-size:13px;padding:8px 14px;}
  .tool-grid{grid-template-columns:1fr;gap:16px;}
  .spec-row{grid-template-columns:1fr;gap:10px;padding:18px 18px;}
  .spec-row .badge{align-self:flex-start;}
  .read-item{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .btn{width:100%;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .flow-item{padding:18px;}
}
@media (max-width:520px){
  .main-inner{padding:20px 16px 56px;}
  .page-hero h1{font-size:26px;line-height:36px;}
  .hero-sub{font-size:15px;line-height:26px;}
  .sec-title{font-size:21px;line-height:30px;}
  .cta-band h2{font-size:21px;line-height:30px;}
  .footer-grid{grid-template-columns:1fr;}
  .container{padding:0 16px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1B4F8C;
  --c-primary-strong:#123A6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#0EA5A0;
  --c-warm:#F2994A;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A98AB;
  --c-ok:#17A673;
  --c-warn:#E0A22B;
  --c-error:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,27,45,.04), 0 8px 24px rgba(27,79,140,.06);
  --sh-hover:0 12px 32px rgba(27,79,140,.12);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 16px}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部移动导航条 ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:70;
  height:56px;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand svg{
  width:24px;
  height:24px;
  flex:none;
  color:var(--c-primary);
}
.brand-text{
  font-size:16px;
  font-weight:700;
  color:var(--c-primary-strong);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  letter-spacing:.2px;
}
.menu-btn{
  width:44px;
  height:44px;
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-btn);
  color:var(--c-primary-strong);
  cursor:pointer;
  transition:background .18s ease-out;
}
.menu-btn svg{width:22px;height:22px}
.menu-btn:hover{background:var(--c-primary-soft)}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:fixed;
  left:0;
  top:0;
  bottom:0;
  width:var(--sidebar-w);
  z-index:80;
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:22px 0 18px;
  background:#fff;
  border-right:1px solid var(--c-line);
  overflow-y:auto;
  transition:transform .24s ease-out;
}
.sidebar .brand{padding:0 20px 18px;display:flex}
.sidebar .brand-text{font-size:16px}
.nav-group-title{
  padding:14px 20px 8px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--c-text-3);
  font-weight:600;
}
.nav-list{display:flex;flex-direction:column}
.nav-list a{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 20px;
  font-size:15px;
  color:var(--c-text-2);
  border-left:3px solid transparent;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-list a svg{width:18px;height:18px;flex:none;stroke-width:1.5}
.nav-list a:hover{background:var(--c-bg-alt);color:var(--c-primary)}
.nav-list a.active{
  background:var(--c-primary-soft);
  border-left-color:var(--c-primary);
  color:var(--c-primary-strong);
  font-weight:600;
}
.nav-sub a{
  min-height:38px;
  padding-left:32px;
  font-size:14px;
  border-left:3px solid transparent;
}
.sidebar-cta{
  margin:auto 16px 0;
  padding:18px;
  background:var(--c-bg-alt);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
}
.sidebar-cta p{
  font-size:14px;
  line-height:1.6;
  color:var(--c-text-2);
  margin:0 0 12px;
}
.sidebar-cta .btn{width:100%}
.overlay{
  position:fixed;
  inset:0;
  z-index:75;
  background:rgba(15,27,45,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease-out,visibility .24s ease-out;
}
.overlay.show{opacity:1;visibility:visible}

/* ---------- 页面主体容器 ---------- */
.page{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.page > main{flex:1}

/* ---------- 按钮 / 徽章 / 状态条 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-strong);transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-primary:active{transform:none}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#0B8B87;transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-accent:active{transform:none}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.badge{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  border-radius:999px;
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-size:12px;
  line-height:1;
  white-space:nowrap;
}
.badge-warm{background:#FDF0E2;color:#B4651A}
.status{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:14px 16px;
  background:var(--c-bg-alt);
  border-left:3px solid var(--c-ok);
  border-radius:8px;
  font-size:14px;
  color:var(--c-text-2);
  margin:0 0 24px;
}
.status .status-tag{color:var(--c-ok);font-weight:600;flex:none}

/* ---------- 分类页顶部 ---------- */
.cat-hero{padding:40px 0 0}
.cat-hero .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:18px;
}
.cat-hero h1{
  font-size:40px;
  font-weight:700;
  line-height:1.25;
  max-width:900px;
  margin-bottom:16px;
}
.cat-hero h1 em{font-style:normal;color:var(--c-primary-strong)}
.hero-lead{
  font-size:17px;
  color:var(--c-text-2);
  max-width:760px;
  margin:0 0 20px;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:24px;
}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline}
.cat-hero-media{
  position:relative;
  height:260px;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--c-primary-soft);
}
.cat-hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:0;
}
.cat-hero-caption{
  position:absolute;
  left:24px;
  bottom:24px;
  max-width:min(560px,82%);
  padding:14px 18px;
  background:rgba(255,255,255,.94);
  border-radius:12px;
  box-shadow:var(--sh-card);
}
.cat-hero-caption strong{display:block;font-size:16px;color:var(--c-primary-strong)}
.cat-hero-caption span{font-size:13px;color:var(--c-text-2)}

/* ---------- 主体两栏 ---------- */
.cat-body{padding:64px 0 96px}
.cat-grid{
  display:grid;
  grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.prose{min-width:0}
.prose h2{
  font-size:30px;
  line-height:1.35;
  margin:56px 0 18px;
  padding-left:14px;
  border-left:4px solid var(--c-primary);
  scroll-margin-top:24px;
}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:22px;margin:32px 0 12px;color:var(--c-text)}
.prose p{color:var(--c-text-2)}
.prose strong{color:var(--c-text)}

.dot-list{margin:0 0 24px}
.dot-list li{
  position:relative;
  padding:10px 0 10px 22px;
  border-bottom:1px dashed var(--c-line);
  color:var(--c-text-2);
  font-size:15px;
}
.dot-list li:last-child{border-bottom:0}
.dot-list li::before{
  content:"";
  position:absolute;
  left:4px;
  top:20px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-primary);
}
.dot-list li b{color:var(--c-text);font-weight:600}

.type-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
  margin:0 0 24px;
}
.type-card{
  padding:24px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.type-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.type-card svg{width:22px;height:22px;color:var(--c-primary);margin-bottom:12px}
.type-card h3{font-size:18px;margin:0 0 8px}
.type-card p{font-size:14px;line-height:1.7;margin:0;color:var(--c-text-2)}

.steps{margin:0 0 24px;counter-reset:step}
.steps li{
  position:relative;
  padding:0 0 24px 58px;
}
.steps li:last-child{padding-bottom:0}
.steps li::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;
  top:2px;
  width:40px;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(14,165,160,.12);
  color:var(--c-accent);
  font-size:14px;
  font-weight:700;
}
.steps li::after{
  content:"";
  position:absolute;
  left:19px;
  top:48px;
  bottom:6px;
  width:1px;
  background:var(--c-line);
}
.steps li:last-child::after{display:none}
.steps li h3{font-size:18px;margin:6px 0 6px}
.steps li p{font-size:15px;margin:0;color:var(--c-text-2)}

.figure{margin:0 0 24px}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure figcaption{font-size:13px;color:var(--c-text-3);margin-top:8px}

.check-list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
  margin:0 0 24px;
}
.check-list li{
  display:flex;
  gap:10px;
  padding:14px 16px;
  background:var(--c-bg-alt);
  border:1px solid var(--c-line);
  border-radius:10px;
  font-size:14px;
  color:var(--c-text-2);
}
.check-list li svg{width:18px;height:18px;flex:none;color:var(--c-ok);margin-top:3px}

/* ---------- FAQ ---------- */
.faq{margin:0 0 32px;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  font-size:18px;
  font-weight:600;
  text-align:left;
  color:var(--c-text);
  cursor:pointer;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--c-primary)}
.faq-q .sign{
  flex:none;
  width:20px;
  height:20px;
  position:relative;
  color:var(--c-primary);
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-q .sign::before{left:0;top:9px;width:20px;height:2px}
.faq-q .sign::after{left:9px;top:0;width:2px;height:20px;transition:transform .2s ease-out,opacity .2s ease-out}
.faq-item.open .sign::after{transform:scaleY(0);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease-out;
}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{
  margin:0;
  padding:0 0 20px;
  font-size:16px;
  color:var(--c-text-2);
}

/* ---------- 相关阅读 ---------- */
.rel-list{margin:0 0 32px}
.rel-list li{
  padding:16px 0;
  border-bottom:1px solid var(--c-line);
}
.rel-list li:first-child{padding-top:4px}
.rel-list a{
  display:inline-block;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  transition:color .18s ease-out;
}
.rel-list a:hover{color:var(--c-primary);text-decoration:underline}
.rel-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:6px;
  font-size:12px;
  color:var(--c-text-3);
}

/* ---------- 底部 CTA 区块 ---------- */
.cta-block{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:40px;
  background:var(--c-primary-soft);
  border-radius:var(--r-card);
}
.cta-block h2{
  font-size:24px;
  margin:0 0 8px;
  padding:0;
  border:0;
}
.cta-block p{
  margin:0;
  font-size:15px;
  color:var(--c-text-2);
  max-width:520px;
}
.cta-block .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 侧栏 ---------- */
.side-col{min-width:0}
.side-sticky{position:sticky;top:32px;display:flex;flex-direction:column;gap:20px}
.side-card{
  padding:24px;
  background:var(--c-bg-alt);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
}
.side-card h2{
  font-size:18px;
  margin:0 0 14px;
  padding-left:12px;
  border-left:4px solid var(--c-primary);
}
.side-card p{font-size:14px;color:var(--c-text-2);margin:0 0 14px}
.anchor-list li + li{margin-top:6px}
.anchor-list a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  font-size:14px;
  color:var(--c-text-2);
  transition:background .18s ease-out,color .18s ease-out;
}
.anchor-list a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.anchor-list a.active{
  background:#fff;
  color:var(--c-primary-strong);
  font-weight:600;
  box-shadow:var(--sh-card);
}
.side-meta{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--c-text-2)}
.side-meta div{display:flex;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:1px dashed var(--c-line)}
.side-meta div:last-child{border-bottom:0;padding-bottom:0}
.side-meta span:first-child{color:var(--c-text-3)}
.side-meta span:last-child{font-weight:600;color:var(--c-text)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-strong);
  color:#fff;
  margin-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:64px 24px 48px;
}
.site-footer .brand svg{color:#fff}
.site-footer .brand-text{color:#fff}
.site-footer p{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.8);
  margin:0 0 12px;
}
.site-footer h4{
  font-size:15px;
  font-weight:600;
  margin:0 0 16px;
  color:#fff;
}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer ul a{
  font-size:14px;
  color:rgba(255,255,255,.7);
  transition:color .18s ease-out;
}
.site-footer ul a:hover{color:#fff;text-decoration:underline}
.footer-mail{font-size:13px;color:rgba(255,255,255,.7)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding:18px 0;
  font-size:13px;
  color:rgba(255,255,255,.7);
}
.footer-bottom .container{padding:0 24px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cat-hero h1{font-size:34px}
  .prose h2{font-size:26px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .topbar{display:flex}
  .sidebar{
    left:auto;
    right:0;
    width:84vw;
    max-width:320px;
    transform:translateX(105%);
    box-shadow:-12px 0 32px rgba(15,27,45,.14);
  }
  .sidebar.open{transform:translateX(0)}
  .page{margin-left:0}
  .cat-hero{padding:28px 0 0}
  .cat-body{padding:48px 0 72px}
  .cat-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .side-sticky{position:static}
  .cat-hero-media{height:220px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding:48px 24px 32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .cat-hero h1{font-size:28px}
  .hero-lead{font-size:16px}
  .cat-hero-media{height:200px}
  .cat-hero-caption{left:16px;right:16px;bottom:16px;max-width:none;padding:12px 14px}
  .type-grid{grid-template-columns:minmax(0,1fr)}
  .check-list{grid-template-columns:minmax(0,1fr)}
  .cta-block{padding:28px 24px}
  .cta-block .cta-actions{width:100%}
  .cta-block .btn{width:100%}
  .faq-q{font-size:17px;padding:16px 0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
}
@media (max-width:479px){
  .cat-hero h1{font-size:26px;line-height:1.35}
  .prose h2{font-size:23px;margin:44px 0 14px}
  .prose h3{font-size:19px}
  .btn{width:100%}
  .badge{height:22px}
}

/* roulang page: category4 */
:root{
  --c-primary:#1B4F8C;
  --c-primary-strong:#123A6B;
  --c-primary-soft:#E8F0FA;
  --c-accent:#0EA5A0;
  --c-warm:#F2994A;
  --c-bg:#FFFFFF;
  --c-bg-alt:#F5F8FC;
  --c-line:#E3EAF3;
  --c-text:#0F1B2D;
  --c-text-2:#4A5A70;
  --c-text-3:#8A98AB;
  --c-ok:#17A673;
  --c-warn:#E0A22B;
  --c-error:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(27,79,140,.06);
  --sh-hover:0 12px 32px rgba(27,79,140,.12);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--c-primary-strong)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 顶部移动导航 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:#fff;border-bottom:1px solid var(--c-line);
  z-index:90;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary-strong);font-weight:700}
.brand svg{width:24px;height:24px;flex:0 0 24px}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px}
.topbar .brand-text{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw}
.menu-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-btn);cursor:pointer;
  color:var(--c-primary-strong);transition:background .18s ease-out;
}
.menu-btn:hover{background:var(--c-primary-soft)}
.menu-btn svg{width:22px;height:22px}

/* ---------- 桌面左侧竖栏 ---------- */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:240px;
  display:flex;flex-direction:column;
  background:#fff;border-right:1px solid var(--c-line);
  padding:24px 16px;overflow-y:auto;z-index:60;
}
.sidebar .brand{padding:0 8px 20px;border-bottom:1px solid var(--c-line);margin-bottom:16px}
.side-nav ul{list-style:none}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--c-text-2);
  border-left:3px solid transparent;transition:background .18s ease-out,color .18s ease-out;
}
.side-nav a svg{width:18px;height:18px;stroke-width:1.5px}
.side-nav a:hover{background:var(--c-bg-alt);color:var(--c-primary-strong)}
.side-nav a.active{
  background:var(--c-primary-soft);color:var(--c-primary-strong);
  border-left-color:var(--c-primary);
}
.side-group{margin-top:24px}
.side-group-title{
  margin:0 0 8px 12px;font-size:12px;line-height:20px;font-weight:600;
  color:var(--c-text-3);letter-spacing:.6px;
}
.side-group ul{list-style:none}
.side-group a{
  display:block;padding:8px 12px 8px 24px;font-size:14px;line-height:24px;
  color:var(--c-text-2);border-radius:var(--r-btn);border-left:3px solid transparent;
  transition:background .18s ease-out,color .18s ease-out;
}
.side-group a:hover{background:var(--c-bg-alt);color:var(--c-primary-strong)}
.side-group a.active{
  background:var(--c-primary-soft);color:var(--c-primary-strong);
  border-left-color:var(--c-primary);font-weight:600;
}
.side-cta{
  margin-top:auto;padding:16px;background:var(--c-bg-alt);
  border:1px solid var(--c-line);border-radius:var(--r-card);
}
.side-cta p{margin:0 0 12px;font-size:14px;line-height:24px;color:var(--c-text-2)}
.side-cta .btn{width:100%}
.backdrop{
  position:fixed;inset:0;background:rgba(15,27,45,.45);
  opacity:0;visibility:hidden;transition:opacity .24s ease-out,visibility .24s ease-out;z-index:70;
}
.backdrop.show{opacity:1;visibility:visible}

/* ---------- 布局 ---------- */
.layout{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
.main{flex:1 1 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;text-align:center;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:none}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#0B8580;color:#fff;transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-strong)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  color:var(--c-primary);font-size:15px;font-weight:600;
}
.btn-link:hover{color:var(--c-accent);text-decoration:underline}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:999px;font-size:12px;line-height:22px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-ok{background:rgba(23,166,115,.12);color:#0E7A54}
.badge-warn{background:rgba(224,162,43,.16);color:#8A6413}
.badge-error{background:rgba(217,83,79,.12);color:#A63A36}
.badge-warm{background:rgba(242,153,74,.18);color:#9A5A16}

/* ---------- 首屏 ---------- */
.hero{padding:64px 0 0;background:var(--c-bg)}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;line-height:24px;color:var(--c-text-3);height:32px;margin-bottom:16px;
}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span.sep{color:var(--c-line)}
.hero h1{font-size:40px;line-height:1.25;font-weight:700;margin-bottom:16px;max-width:22em}
.hero-sub{font-size:16px;line-height:28px;color:var(--c-text-2);max-width:44em;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-figure{
  border-radius:var(--r-img);overflow:hidden;background:var(--c-primary-soft);
  border:1px solid var(--c-line);
}
.hero-figure img{width:100%;aspect-ratio:16/4;object-fit:cover}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--c-bg-alt)}
.section-head{margin-bottom:40px;max-width:56em}
.section-title{
  position:relative;padding-left:16px;font-size:30px;line-height:40px;font-weight:700;
  margin-bottom:12px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.section-desc{color:var(--c-text-2);font-size:15px;line-height:26px;margin:0}

/* ---------- 时间线 ---------- */
.timeline{position:relative;list-style:none;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:23px;top:16px;bottom:16px;
  width:2px;background:var(--c-line);
}
.tl-item{position:relative;padding-left:84px;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 0 0 6px #fff;z-index:1;
}
.tl-body{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.tl-body:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.tl-body h3{font-size:22px;line-height:32px;font-weight:600;margin-bottom:8px}
.tl-body p{font-size:15px;line-height:26px;color:var(--c-text-2);margin:0}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ---------- 状态卡 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px}
.card h3{font-size:18px;line-height:28px;font-weight:600;margin-bottom:8px}
.card p{font-size:15px;line-height:26px;color:var(--c-text-2);margin:0}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split-figure{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:var(--c-primary-soft)}
.split-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split h3{font-size:22px;line-height:32px;font-weight:600;margin-bottom:12px}
.split p{font-size:15px;line-height:26px;color:var(--c-text-2)}
.check-list{list-style:none;margin-top:16px}
.check-list li{
  position:relative;padding-left:24px;font-size:15px;line-height:26px;
  color:var(--c-text-2);margin-bottom:8px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;
  border-radius:50%;background:var(--c-primary);
}
.check-list li strong{color:var(--c-text);font-weight:600}

/* ---------- 指标 ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;text-align:left;
}
.stat-num{font-size:34px;line-height:44px;font-weight:700;color:var(--c-accent);letter-spacing:-.5px}
.stat-label{font-size:14px;line-height:24px;color:var(--c-text-3);margin-top:4px}
.stat-text{font-size:14px;line-height:24px;color:var(--c-text-2);margin-top:12px}

/* ---------- 状态条 ---------- */
.status-bar{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 20px;border-radius:var(--r-btn);background:var(--c-bg-alt);
  border-left:3px solid var(--c-primary);margin-bottom:12px;
}
.status-bar.ok{background:rgba(23,166,115,.08);border-left-color:var(--c-ok)}
.status-bar.warn{background:rgba(224,162,43,.10);border-left-color:var(--c-warn)}
.status-bar.error{background:rgba(217,83,79,.08);border-left-color:var(--c-error)}
.status-bar strong{display:block;font-size:15px;line-height:24px;font-weight:600;color:var(--c-text)}
.status-bar span{font-size:14px;line-height:24px;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:4px 24px;box-shadow:var(--sh-card)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:18px;line-height:28px;font-weight:600;
  cursor:pointer;list-style:none;transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;font-weight:400;
  color:var(--c-primary);transition:transform .2s ease-out;
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 0 20px;font-size:15px;line-height:26px;color:var(--c-text-2);max-width:52em}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--c-primary-soft);border-radius:var(--r-card);
  padding:48px;display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;
}
.cta-block h2{font-size:30px;line-height:40px;margin-bottom:12px}
.cta-block p{font-size:15px;line-height:26px;color:var(--c-text-2);margin:0}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}

/* ---------- 相关阅读 ---------- */
.read-list{list-style:none;border-top:1px solid var(--c-line)}
.read-list li{border-bottom:1px solid var(--c-line);padding:16px 0}
.read-list a{display:block;font-size:16px;line-height:24px;font-weight:600;color:var(--c-text)}
.read-list a:hover{color:var(--c-primary);text-decoration:underline}
.read-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:6px;font-size:12px;line-height:20px;color:var(--c-text-3)}
.read-desc{font-size:14px;line-height:24px;color:var(--c-text-2);margin-top:6px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-strong);color:rgba(255,255,255,.8);margin-top:auto}
.site-footer .container{padding-top:64px;padding-bottom:48px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{color:#fff}
.site-footer .brand-text{color:#fff}
.site-footer h4{font-size:16px;line-height:26px;color:#fff;margin-bottom:16px}
.site-footer p{font-size:14px;line-height:24px;color:rgba(255,255,255,.8);margin:0 0 12px}
.site-footer .footer-mail{color:rgba(255,255,255,.7)}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:10px}
.site-footer a{color:rgba(255,255,255,.7);font-size:14px;line-height:24px}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.16);
  padding:20px 0;font-size:13px;line-height:22px;color:rgba(255,255,255,.65);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:34px}
  .split{gap:32px}
}
@media (max-width:991px){
  .topbar{display:flex}
  .sidebar{
    left:auto;right:0;top:0;bottom:0;width:84vw;max-width:320px;
    transform:translateX(105%);transition:transform .24s ease-out;
    border-right:0;border-left:1px solid var(--c-line);
    box-shadow:-8px 0 32px rgba(15,27,45,.12);z-index:80;
  }
  .sidebar.open{transform:translateX(0)}
  .layout{margin-left:0;padding-top:56px}
  .sidebar .brand{padding-bottom:16px}
  .side-cta{margin-top:24px}
  .section{padding:72px 0}
  .hero{padding:40px 0 0}
  .hero h1{font-size:32px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .split-figure{order:-1}
  .cta-block{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero h1{font-size:28px;line-height:36px}
  .section-title{font-size:24px;line-height:32px}
  .section-head{margin-bottom:28px}
  .grid-3{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .timeline::before{left:19px}
  .tl-item{padding-left:64px}
  .tl-dot{width:40px;height:40px;font-size:14px;box-shadow:0 0 0 5px #fff}
  .tl-body{padding:20px}
  .tl-body h3{font-size:19px;line-height:28px}
  .faq-list{padding:4px 16px}
  .faq-item summary{padding:16px 0;font-size:16px;line-height:26px}
  .cta-block h2{font-size:24px;line-height:32px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
}
@media (max-width:479px){
  .hero h1{font-size:26px}
  .hero-figure img{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr}
  .cta-block{padding:24px}
}