/* roulang page: index */
:root{
  --brand:#16618C;
  --brand-dark:#0F4A6C;
  --brand-tint:#E8F1F7;
  --accent:#E8A33D;
  --pos:#2FA79A;
  --neg:#D9534F;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --alt:#EDF3F8;
  --ink:#16232B;
  --text:#5A6B76;
  --muted:#93A3AD;
  --line:#C4D1D9;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(16,50,70,.05),0 10px 26px -14px rgba(16,50,70,.16);
  --shadow-hover:0 2px 6px rgba(16,50,70,.06),0 20px 36px -18px rgba(16,50,70,.26);
  --mono:'DIN Alternate','Roboto Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .22s ease;}
a:hover,a:focus{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:.005em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
.grid-container.xl{max-width:1320px;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px;}
}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* 通用按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  text-align:center;white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(22,97,140,.8);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-tint);color:var(--brand-dark);}
.btn-text{height:auto;padding:0;color:var(--brand);font-weight:600;background:none;border:0;}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;}
.button{background:var(--brand);border-radius:var(--radius-btn);}
.button:hover{background:var(--brand-dark);}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-tint);color:var(--brand);
  border-radius:var(--radius-pill);padding:4px 12px;
  font-size:13px;font-weight:600;line-height:1.5;
}
.badge-accent{background:rgba(232,163,61,.14);color:#9A6716;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--brand);}
.brand-mark{display:inline-flex;color:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--ink);}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.18em;}
.brand:hover .brand-text strong{color:var(--brand);}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:8px 12px;font-size:14px;font-weight:500;color:var(--text);
  border-radius:8px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-tint);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:700;}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;margin-left:auto;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

.nav-mask{
  position:fixed;inset:0;background:rgba(22,35,43,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:86vw;background:#fff;
  z-index:80;padding:22px 20px 30px;transform:translateX(102%);
  transition:transform .28s ease;overflow-y:auto;
  box-shadow:-18px 0 40px -24px rgba(16,50,70,.5);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink);}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-cta{display:grid;gap:10px;margin-bottom:20px;}
.drawer-nav{display:grid;gap:2px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;margin-bottom:18px;}
.drawer-nav a{padding:11px 10px;border-radius:8px;font-size:15px;color:var(--text);font-weight:500;}
.drawer-nav a:hover{background:var(--brand-tint);color:var(--brand);}
.drawer-nav a.is-active{color:var(--brand);font-weight:700;background:var(--brand-tint);}
.drawer-foot{font-size:13px;color:var(--muted);line-height:1.9;}

/* Hero */
.hero{
  position:relative;
  background-image:linear-gradient(rgba(255,255,255,.82),rgba(255,255,255,.82)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:76px 0 72px;
}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.hero-eyebrow{margin-bottom:16px;}
.hero h1{font-size:40px;line-height:1.28;margin-bottom:18px;letter-spacing:-.01em;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text);max-width:520px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px;}
.hero-note{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.hero-note i{color:var(--pos);}
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 26px 22px;
  box-shadow:var(--shadow);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.panel-dot{width:9px;height:9px;border-radius:50%;background:var(--pos);box-shadow:0 0 0 4px rgba(47,167,154,.16);}
.panel-title{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:18px;}
.panel-steps{display:grid;gap:14px;}
.panel-steps li{display:grid;grid-template-columns:38px 1fr;gap:12px;align-items:start;}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;height:30px;border-radius:9px;
  background:var(--brand-tint);color:var(--brand);font-family:var(--mono);font-size:13px;font-weight:700;
}
.panel-steps strong{display:block;font-size:15px;color:var(--ink);font-weight:700;margin-bottom:2px;}
.panel-steps p{font-size:13px;color:var(--text);line-height:1.7;}
.panel-foot{
  margin-top:20px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);line-height:1.7;
}

/* 通用板块 */
.section{padding:88px 0;}
.section-alt{background:var(--alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;}
.section-head h2{font-size:30px;line-height:1.35;}
.section-head .section-desc{font-size:15px;color:var(--text);margin-top:10px;max-width:640px;}
.section-head .head-link{font-size:14px;font-weight:600;white-space:nowrap;}
.section-head .head-link i{font-size:12px;margin-left:4px;}

/* 指标看板 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.metric-label{font-size:13px;color:var(--muted);margin-bottom:10px;letter-spacing:.04em;}
.metric-value{font-family:var(--mono);font-size:36px;font-weight:700;color:var(--brand);line-height:1.1;}
.metric-value span{font-size:15px;font-weight:600;margin-left:3px;color:var(--brand);}
.metric-bar{height:2px;width:38px;background:var(--brand);border-radius:2px;margin:14px 0 12px;}
.metric-note{font-size:13px;color:var(--text);line-height:1.7;}
.metric-note i{margin-right:5px;}

/* 服务矩阵 bento */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.bento-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.bento-card::before{content:"";position:absolute;left:0;top:0;width:3px;height:56px;background:var(--brand);}
.bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.bento-card.tone-2::before{background:var(--accent);}
.bento-card.tone-3::before{background:var(--pos);}
.bento-large{grid-column:span 2;grid-row:span 2;padding:30px;justify-content:space-between;}
.bento-mid{grid-column:span 2;}
.bento-sm{grid-column:span 2;}
.bento-icon{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;
  background:var(--brand-tint);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.bento-card h3{font-size:20px;margin-bottom:10px;}
.bento-large h3{font-size:24px;}
.bento-card p{font-size:14px;line-height:1.8;color:var(--text);margin-bottom:16px;}
.bento-figure{
  border-radius:12px;overflow:hidden;margin:22px 0 18px;aspect-ratio:16/9;background:var(--alt);
}
.bento-figure img{width:100%;height:100%;object-fit:cover;}
.bento-link{margin-top:auto;font-size:14px;font-weight:600;}
.bento-link i{font-size:12px;margin-left:4px;}

/* 结果对比 */
.compare{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);
}
.compare-head,.compare-row{display:grid;grid-template-columns:1.4fr 1fr 1fr .9fr;align-items:center;}
.compare-head{
  background:var(--alt);padding:16px 24px;border-bottom:1px solid var(--line);
  font-size:13px;font-weight:700;color:var(--text);letter-spacing:.06em;
}
.compare-row{padding:0 24px;min-height:56px;border-bottom:1px solid #EDF3F8;font-size:15px;}
.compare-row:last-child{border-bottom:0;}
.compare-row:hover{background:#FAFCFD;}
.c-metric{color:var(--ink);font-weight:600;}
.c-before{color:var(--text);font-family:var(--mono);}
.c-after{color:var(--ink);font-family:var(--mono);font-weight:700;}
.c-delta{font-family:var(--mono);font-weight:700;font-size:15px;}
.c-delta.up{color:var(--pos);}
.c-delta.down{color:var(--neg);}
.c-label{display:none;}
.compare-foot{padding:16px 24px;font-size:13px;color:var(--muted);background:#FAFCFD;border-top:1px solid var(--line);}

/* 社会认同 */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.voice-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.voice-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.voice-quote{font-size:15px;line-height:1.85;color:var(--ink);padding-left:16px;border-left:4px solid var(--brand);background:var(--brand-tint);padding:16px 18px;border-radius:0 10px 10px 0;margin-bottom:18px;}
.voice-meta{display:flex;align-items:center;gap:12px;}
.voice-avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-tint);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;}
.voice-meta strong{display:block;font-size:14px;color:var(--ink);}
.voice-meta span{font-size:13px;color:var(--muted);}

/* CMS 列表 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);height:100%;
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.post-card h3{font-size:18px;margin:14px 0 10px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card .post-excerpt{
  font-size:14px;color:var(--text);line-height:1.8;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid #EDF3F8;}
.post-time{font-family:var(--mono);font-size:13px;color:var(--muted);}
.post-link{font-size:14px;font-weight:600;}
.post-link i{margin-left:5px;font-size:12px;}
.post-feature{grid-column:span 3;display:grid;grid-template-columns:1fr 1.1fr;gap:0;padding:0;overflow:hidden;}
.post-feature-media{background:var(--alt);min-height:260px;}
.post-feature-media img{width:100%;height:100%;object-fit:cover;}
.post-feature-body{padding:30px;display:flex;flex-direction:column;}
.post-feature-body h3{font-size:22px;-webkit-line-clamp:2;}
.post-empty{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;box-shadow:var(--shadow);
}
.post-empty i{font-size:30px;color:var(--muted);margin-bottom:14px;display:block;}
.post-empty strong{display:block;font-size:17px;color:var(--ink);margin-bottom:8px;}
.post-empty p{font-size:14px;color:var(--text);margin-bottom:20px;}

/* FAQ */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow);}
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{border-bottom:1px solid #EDF3F8;background:transparent;}
.accordion .accordion-item:last-child{border-bottom:0;}
.accordion .accordion-title{
  display:flex;align-items:center;gap:14px;
  padding:22px 24px;font-size:16px;font-weight:600;color:var(--ink);
  border:0;border-left:3px solid transparent;background:transparent;
  transition:color .22s ease,border-color .22s ease,background .22s ease;
}
.accordion .accordion-title:hover{background:#FAFCFD;color:var(--brand);}
.accordion .accordion-title::before{display:none;}
.accordion .accordion-title .faq-num{font-family:var(--mono);font-size:13px;color:var(--muted);font-weight:700;}
.accordion .accordion-title .faq-txt{flex:1 1 auto;}
.accordion .accordion-title .faq-arrow{color:var(--muted);font-size:13px;transition:transform .22s ease;}
.accordion .accordion-item.is-active .accordion-title{border-left-color:var(--brand);color:var(--brand);background:#FAFCFD;}
.accordion .accordion-item.is-active .accordion-title .faq-num{color:var(--brand);}
.accordion .accordion-item.is-active .accordion-title .faq-arrow{transform:rotate(180deg);color:var(--brand);}
.accordion .accordion-content{padding:0 24px 24px 62px;border:0;background:#FAFCFD;}
.accordion .accordion-content p{font-size:15px;line-height:1.8;color:var(--text);}

/* 表单 */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start;}
.contact-points{display:grid;gap:20px;margin-top:22px;}
.contact-points li{display:grid;grid-template-columns:34px 1fr;gap:14px;}
.contact-points .pt-icon{
  width:34px;height:34px;border-radius:10px;background:var(--brand-tint);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.contact-points strong{display:block;font-size:15px;color:var(--ink);margin-bottom:3px;}
.contact-points p{font-size:14px;color:var(--text);line-height:1.75;}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:span 2;}
.field label{font-size:13px;font-weight:600;color:var(--text);}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,97,140,.13);
}
.field .err{font-size:13px;color:var(--neg);display:none;}
.field.has-error input,.field.has-error textarea{border-color:var(--neg);}
.field.has-error .err{display:block;}
.form-tip{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.8;}
.form-tip i{color:var(--pos);margin-right:5px;}
.form-ok{
  display:none;margin-top:16px;padding:12px 16px;border-radius:10px;
  background:rgba(47,167,154,.12);color:#1C7A70;font-size:14px;
}
.form-ok.show{display:block;}

/* 窄 CTA 带 */
.cta-band{background:rgba(22,97,140,.08);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0;}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-band h2{font-size:22px;}
.cta-band p{font-size:14px;color:var(--text);margin-top:6px;}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px;color:var(--ink);}
.footer-brand strong{font-size:16px;font-weight:800;}
.footer-col h3{font-size:14px;color:var(--ink);margin-bottom:16px;letter-spacing:.04em;}
.footer-col p{font-size:14px;color:var(--text);line-height:1.85;max-width:300px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--text);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;}
.footer-contact li{font-size:14px;color:var(--text);display:flex;gap:10px;align-items:flex-start;}
.footer-contact i{color:var(--brand);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--muted);}
.footer-bottom .fb-links{display:flex;gap:18px;}
.footer-bottom .fb-links a{font-size:13px;color:var(--muted);}
.footer-bottom .fb-links a:hover{color:var(--brand);text-decoration:underline;}

/* 响应式 */
@media screen and (max-width:1024px){
  .nav-main,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:56px 0 52px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero h1{font-size:32px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-large{grid-column:span 2;grid-row:auto;}
  .bento-mid,.bento-sm{grid-column:span 2;}
  .voice-grid{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .post-feature{grid-column:span 2;grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:64px 0;}
}
@media screen and (max-width:768px){
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:24px;}
  .hero h1{font-size:28px;}
  .section{padding:56px 0;}
  .post-grid{grid-template-columns:1fr;}
  .post-feature{grid-column:span 1;}
  .compare-head{display:none;}
  .compare-row{
    grid-template-columns:1fr;gap:6px;padding:18px 20px;border-bottom:1px solid var(--line);
  }
  .c-label{
    display:inline-block;min-width:74px;font-size:13px;color:var(--muted);
    font-weight:600;letter-spacing:.04em;
  }
  .compare-row>div{display:flex;align-items:baseline;}
  .c-metric{font-size:16px;}
  .form-row{grid-template-columns:1fr;}
  .field.full{grid-column:span 1;}
  .accordion .accordion-content{padding-left:24px;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;}
}
@media screen and (max-width:520px){
  body{font-size:15px;}
  .metrics{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .bento-large,.bento-mid,.bento-sm{grid-column:span 1;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .brand-text strong{font-size:16px;}
  .metric-value{font-size:30px;}
}

/* roulang page: article */
:root{
  --brand:#16618C;
  --brand-dark:#0F4A6C;
  --brand-soft:#E8F1F7;
  --brand-soft-2:#EDF3F8;
  --accent:#E8A33D;
  --ok:#2FA79A;
  --risk:#D9534F;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --text:#16232B;
  --muted:#5A6B76;
  --hint:#93A3AD;
  --line:#C4D1D9;
  --line-soft:#E3EBF0;
  --radius:14px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(16,50,70,.05),0 10px 26px -14px rgba(16,50,70,.16);
  --shadow-hover:0 2px 4px rgba(16,50,70,.06),0 18px 36px -16px rgba(16,50,70,.24);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);letter-spacing:.02em;}

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

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all var(--ease);white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 18px -12px rgba(22,97,140,.85);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(22,97,140,.45);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--line);box-shadow:var(--shadow);}
.btn-outline:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}
.btn-lg{height:50px;padding:0 28px;font-size:16px;}
.btn-link{background:none;border:0;padding:0;color:var(--brand);font-size:14px;font-weight:600;height:auto;display:inline-flex;align-items:center;gap:6px;}
.btn-link:hover{color:var(--brand-dark);gap:9px;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge-accent{background:rgba(232,163,61,.16);color:#9A6415;}
.badge-soft{background:var(--brand-soft-2);color:var(--muted);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:saturate(150%) blur(6px);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--brand);flex-shrink:0;}
.brand:hover{color:var(--brand-dark);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;color:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--text);}
.brand-text em{font-style:normal;font-size:12px;letter-spacing:.22em;color:var(--hint);}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  font-size:14px;color:var(--muted);border-radius:8px;transition:all var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.is-active{color:var(--brand);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:#fff;border:1px solid var(--line);color:var(--brand);font-size:18px;
  align-items:center;justify-content:center;cursor:pointer;transition:all var(--ease);
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand);}

.nav-mask{
  position:fixed;inset:0;background:rgba(22,35,43,.45);z-index:70;
  opacity:0;pointer-events:none;transition:opacity var(--ease);
}
.nav-mask.is-open{opacity:1;pointer-events:auto;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:80;
  background:#fff;box-shadow:-18px 0 40px -22px rgba(16,50,70,.4);
  padding:22px 20px 28px;overflow-y:auto;
  transform:translateX(104%);transition:transform .26s ease;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head span{font-size:13px;letter-spacing:.18em;color:var(--hint);}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;}
.drawer-cta{display:grid;gap:10px;margin-bottom:22px;}
.drawer-cta .btn{width:100%;height:46px;}
.drawer-nav{display:grid;gap:4px;border-top:1px solid var(--line-soft);padding-top:14px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:46px;padding:0 12px;border-radius:10px;color:var(--muted);font-size:15px;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:20px;border-top:1px solid var(--line-soft);padding-top:16px;font-size:13px;color:var(--hint);line-height:1.9;}
.drawer-foot strong{display:block;color:var(--text);font-size:14px;margin-bottom:6px;}

/* ============ 顶部信息区 ============ */
.page-banner{
  position:relative;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.page-banner::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.90);}
.page-banner .grid-container{position:relative;padding-top:34px;padding-bottom:40px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--hint);margin-bottom:18px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);text-decoration:underline;}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .bc-now{color:var(--brand);font-weight:600;}
.article-title{
  font-size:40px;line-height:1.35;font-weight:800;letter-spacing:-.01em;
  color:var(--text);max-width:880px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:18px;
  font-size:13px;color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand);font-size:13px;}
.article-meta .num{color:var(--text);font-weight:600;}

/* ============ 文章主体 ============ */
.article-main{padding:56px 0 72px;}
.article-shell{display:block;}
.article-body{
  max-width:800px;margin:0 auto;background:var(--surface);
  border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:48px 52px 52px;
  font-size:16.5px;line-height:1.85;color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;color:#2B3A44;}
.article-body h2{
  position:relative;font-size:25px;line-height:1.5;font-weight:800;color:var(--text);
  margin:2em 0 .8em;padding-left:15px;letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;width:3px;height:1.02em;border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;font-weight:700;color:var(--text);margin:1.7em 0 .6em;}
.article-body h4{font-size:16.5px;font-weight:700;color:var(--brand);margin:1.5em 0 .5em;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(22,97,140,.35);}
.article-body a:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark);}
.article-body strong{font-weight:700;color:var(--text);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:.55em;color:#2B3A44;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand);
}
.article-body ol{counter-reset:art-ol;}
.article-body ol li{counter-increment:art-ol;}
.article-body ol li::before{
  content:counter(art-ol,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:var(--font-num);font-size:13px;
  font-weight:700;color:var(--brand);letter-spacing:.02em;line-height:1.95;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--brand-soft);
  border-left:4px solid var(--brand);border-radius:0 10px 10px 0;color:#254355;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:1.6em auto;width:100%;height:auto;}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{
  font-size:13px;color:var(--hint);text-align:center;margin-top:10px;line-height:1.7;
}
.article-body hr{border:0;border-top:1px solid var(--line-soft);margin:2.4em 0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line-soft);border-radius:10px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top;}
.article-body thead th{background:var(--brand-soft-2);color:var(--text);font-weight:700;font-size:14px;}
.article-body tbody tr:nth-child(even){background:#F5F8FA;}
.article-body code{
  background:var(--brand-soft-2);border-radius:6px;padding:2px 6px;
  font-family:var(--font-num);font-size:14px;color:var(--brand-dark);
}

.article-foot{
  max-width:800px;margin:26px auto 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  padding:18px 22px;background:var(--surface);border:1px solid var(--line-soft);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.article-foot .tags{display:flex;flex-wrap:wrap;gap:8px;}
.article-foot .back{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:7px;color:var(--brand);}
.article-foot .back:hover{color:var(--brand-dark);gap:10px;}

.empty-state{
  text-align:center;padding:56px 20px;
}
.empty-state .ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:16px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:26px;
}
.empty-state h3{font-size:20px;font-weight:800;margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:22px;}

/* ============ 相关推荐 ============ */
.related{padding:8px 0 72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px;}
.section-head h2{font-size:26px;font-weight:800;letter-spacing:-.01em;}
.section-head p{font-size:14px;color:var(--muted);margin-top:6px;}
.section-head .more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.section-head .more:hover{gap:9px;}

.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D3E1EA;}
.card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft-2);}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .thumb img{transform:scale(1.04);}
.card .card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.card .card-body h3{font-size:17px;font-weight:700;line-height:1.55;margin-bottom:10px;}
.card .card-body h3 a{color:var(--text);}
.card .card-body h3 a:hover{color:var(--brand);}
.card .card-body p{font-size:14px;color:var(--muted);line-height:1.75;flex:1;}
.card .card-foot{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--hint);
}
.card .card-foot .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--brand-soft);border-top:1px solid #D8E6EF;border-bottom:1px solid #D8E6EF;
}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  padding:30px 0;flex-wrap:wrap;
}
.cta-band h3{font-size:20px;font-weight:800;}
.cta-band p{font-size:14px;color:var(--muted);margin-top:6px;}
.cta-band .acts{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:#0F2E40;color:#B9CBD6;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{color:#5FB3DC;}
.footer-brand strong{font-size:16px;font-weight:800;color:#fff;}
.footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col p{font-size:14px;line-height:1.9;color:#9FB6C3;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:#B9CBD6;}
.footer-col ul a:hover{color:#7FC4E6;text-decoration:underline;}
.footer-contact li{display:flex;gap:9px;font-size:14px;color:#9FB6C3;line-height:1.8;}
.footer-contact i{color:#5FB3DC;margin-top:5px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#8DA6B5;}
.fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.fb-links a{font-size:13px;color:#8DA6B5;}
.fb-links a:hover{color:var(--brand);text-decoration:underline;color:#7FC4E6;}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .nav-link{padding:0 9px;font-size:13.5px;}
  .brand-text strong{font-size:16px;}
}
@media (max-width:1024px){
  .nav-main,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-wrap{min-height:66px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px;}
  .article-title{font-size:30px;}
  .article-body{padding:38px 34px 42px;font-size:16px;}
}
@media (max-width:768px){
  .page-banner .grid-container{padding-top:26px;padding-bottom:30px;}
  .article-title{font-size:26px;}
  .article-main{padding:36px 0 52px;}
  .article-body{padding:28px 22px 32px;font-size:15.5px;}
  .article-body h2{font-size:21px;margin:1.7em 0 .7em;}
  .article-body h3{font-size:18px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .related{padding-bottom:52px;}
  .section-head h2{font-size:22px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band .inner{padding:26px 0;}
}
@media (max-width:520px){
  .brand-text em{letter-spacing:.14em;}
  .article-title{font-size:22px;line-height:1.45;}
  .article-meta{gap:8px 16px;}
  .article-body{padding:24px 18px 28px;border-radius:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band .acts{width:100%;}
  .cta-band .acts .btn{flex:1;min-width:140px;}
}

/* roulang page: category1 */
:root{
  --brand:#16618C;
  --brand-dark:#0F4A6C;
  --brand-10:#E8F1F7;
  --brand-06:rgba(22,97,140,.07);
  --amber:#E8A33D;
  --pos:#2FA79A;
  --neg:#D9534F;
  --bg:#F5F8FA;
  --surface:#FFFFFF;
  --alt:#EDF3F8;
  --ink:#16232B;
  --text:#5A6B76;
  --muted:#93A3AD;
  --line:#C4D1D9;
  --line-soft:#E3EBF0;
  --shadow:0 1px 2px rgba(16,50,70,.05), 0 10px 26px -14px rgba(16,50,70,.16);
  --shadow-hover:0 2px 4px rgba(16,50,70,.07), 0 18px 34px -16px rgba(16,50,70,.24);
  --radius:14px;
  --radius-sm:10px;
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease}
a:hover{color:var(--brand-dark)}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit;font-size:16px;color:var(--ink)}
:focus-visible{outline:2px solid rgba(22,97,140,.55);outline-offset:2px}
.num{font-family:var(--mono);letter-spacing:.02em;font-variant-numeric:tabular-nums}

.grid-container{max-width:1200px;padding-left:20px;padding-right:20px}
@media screen and (min-width:1320px){
  .grid-container{max-width:1320px}
}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 8px 18px -12px rgba(22,97,140,.75)}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);color:#fff;border-color:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-10);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-lg{height:50px;padding:0 26px;font-size:15px;border-radius:12px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line-soft);
  box-shadow:0 1px 2px rgba(16,50,70,.04);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--brand);flex:0 0 auto}
.brand:hover{color:var(--brand-dark)}
.brand-mark{display:inline-flex;color:var(--brand);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;color:var(--ink);font-weight:700;letter-spacing:0}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.14em}

.nav-main{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;border-radius:8px;
  font-size:14px;color:var(--text);font-weight:500;white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-10)}
.nav-link.is-active{color:var(--brand);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

.nav-mask{
  position:fixed;inset:0;background:rgba(22,35,43,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:310px;max-width:88vw;
  background:#fff;z-index:80;padding:22px 20px 26px;
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
  box-shadow:-16px 0 40px -22px rgba(16,50,70,.4);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-head strong{font-size:16px;color:var(--ink)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink);
}
.drawer-actions{display:flex;flex-direction:column;gap:12px}
.drawer-actions .btn{width:100%;height:46px}
.drawer-nav{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line-soft);padding-top:14px}
.drawer-nav a{padding:12px 10px;border-radius:8px;font-size:15px;color:var(--text)}
.drawer-nav a:hover{background:var(--brand-10);color:var(--brand)}
.drawer-nav a.is-active{color:var(--brand);font-weight:700;background:var(--brand-10)}
.drawer-foot{
  margin-top:auto;border-top:1px solid var(--line-soft);padding-top:16px;
  font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:8px;
}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  min-height:240px;
  display:flex;align-items:center;
  background-image:linear-gradient(rgba(255,255,255,.86),rgba(255,255,255,.86)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.page-hero .hero-inner{padding:52px 0;width:100%}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--text)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{color:var(--line)}
.breadcrumb .current{color:var(--brand);font-weight:600}
.page-hero h1{
  font-size:36px;line-height:1.28;max-width:900px;
}
.page-hero .hero-sub{
  margin-top:16px;max-width:760px;font-size:16px;color:var(--text);line-height:1.8;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;background:var(--brand-10);color:var(--brand);
  font-size:13px;font-weight:600;
}
.badge-amber{background:rgba(232,163,61,.14);color:#9c6a15}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--alt)}
.section-white{background:var(--surface)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:30px;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}

/* ============ 目录 + 正文 布局 ============ */
.layout-main{padding:70px 0 80px}
.toc-card{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line-soft);border-left:3px solid var(--brand);
  border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px;
}
.toc-card h2{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:8px;font-size:14px;color:var(--text);
}
.toc-list a::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--line);
  transition:background-color .22s ease,transform .22s ease;flex:0 0 auto;
}
.toc-list a:hover{background:var(--brand-10);color:var(--brand)}
.toc-list a:hover::before{background:var(--brand)}
.toc-list a.is-current{background:var(--brand-10);color:var(--brand);font-weight:700}
.toc-list a.is-current::before{background:var(--brand);transform:scale(1.25)}
.toc-note{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);line-height:1.7;
}

.article-body{max-width:none}
.article-body h2{
  position:relative;font-size:26px;padding-left:16px;margin:52px 0 18px;
}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
.article-body h3{font-size:19px;margin:30px 0 12px}
.article-body p{margin-bottom:16px;line-height:1.85}
.article-body p:last-child{margin-bottom:0}

.dot-list{display:flex;flex-direction:column;gap:12px;margin:18px 0 22px}
.dot-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--text)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--brand);
}
.dot-list li strong{color:var(--ink)}

.note-card{
  background:var(--brand-10);border-radius:var(--radius-sm);
  padding:18px 20px;margin:24px 0;font-size:14px;line-height:1.8;color:var(--brand-dark);
  display:flex;gap:12px;align-items:flex-start;
}
.note-card i{margin-top:4px;color:var(--brand)}

.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}
.mini-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
  border-top:3px solid var(--brand);
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.mini-card h3{font-size:17px;margin-bottom:10px}
.mini-card p{font-size:14px;line-height:1.75;color:var(--text)}
.mini-card .num-tag{
  display:inline-block;font-family:var(--mono);font-size:13px;color:var(--brand);
  letter-spacing:.08em;margin-bottom:10px;
}

/* 步骤流 */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin:26px 0 10px}
.steps::before{
  content:"";position:absolute;top:24px;left:6%;right:6%;height:1px;background:var(--line-soft);
}
.step{position:relative;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;background:var(--brand);color:#fff;
  font-family:var(--mono);font-size:15px;letter-spacing:.02em;margin-bottom:16px;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;line-height:1.75}

/* 表格 */
.table-wrap{
  margin:26px 0;border:1px solid var(--line-soft);border-radius:var(--radius);
  overflow:hidden;background:#fff;box-shadow:var(--shadow);
}
.table-scroll{overflow-x:auto}
table.data-table{width:100%;border-collapse:collapse;min-width:620px}
table.data-table th,table.data-table td{
  padding:16px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line-soft);
}
table.data-table thead th{
  background:var(--brand-10);color:var(--brand);font-size:13px;font-weight:700;
  letter-spacing:.06em;white-space:nowrap;
}
table.data-table tbody tr:nth-child(even){background:var(--bg)}
table.data-table tbody tr:last-child td{border-bottom:0}
table.data-table td:first-child{color:var(--ink);font-weight:600}
.table-hint{font-size:13px;color:var(--muted);padding:10px 18px;border-top:1px solid var(--line-soft);background:#fbfdfe}

/* 图文区 */
.figure-block{margin:30px 0}
.figure-block img{width:100%;border-radius:12px;object-fit:cover;aspect-ratio:16/9}
.figure-block figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:12px}

/* 情况处理列表 */
.issue-list{display:flex;flex-direction:column;gap:14px;margin:22px 0}
.issue{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line-soft);
  border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);
}
.issue-ico{
  flex:0 0 auto;width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-10);color:var(--brand);font-size:16px;
}
.issue h3{font-size:16px;margin-bottom:6px}
.issue p{font-size:14px;line-height:1.75}
.issue .fix{display:block;margin-top:8px;font-size:14px;color:var(--brand-dark)}
.issue .fix strong{color:var(--brand)}

/* 数据小卡 */
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:26px 0}
.stat{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);border-left:3px solid var(--brand);
}
.stat b{display:block;font-family:var(--mono);font-size:32px;color:var(--brand);letter-spacing:.02em;line-height:1.1}
.stat b small{font-size:14px;color:var(--text);margin-left:4px;font-family:var(--sans)}
.stat span{display:block;margin-top:10px;font-size:13px;color:var(--muted);line-height:1.7}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;gap:16px;padding:22px 24px;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q .idx{font-family:var(--mono);font-size:13px;color:var(--muted);flex:0 0 auto}
.faq-q .txt{flex:1 1 auto}
.faq-q .chev{color:var(--muted);transition:transform .25s ease,color .25s ease}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 24px 62px;font-size:15px;line-height:1.8;color:var(--text)}
.faq-item.is-open{border-color:rgba(22,97,140,.35);box-shadow:0 0 0 3px rgba(22,97,140,.06),var(--shadow)}
.faq-item.is-open .faq-q .idx,.faq-item.is-open .faq-q .txt{color:var(--brand)}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--brand)}
.faq-item.is-open .faq-a-inner{border-left:3px solid var(--brand);margin-left:24px;padding-left:20px}

/* ============ 表单 + CTA ============ */
.contact-grid{align-items:flex-start}
.contact-points{display:flex;flex-direction:column;gap:18px;margin-top:26px}
.contact-points li{display:flex;gap:14px;font-size:15px;line-height:1.75}
.contact-points i{color:var(--brand);margin-top:5px}
.form-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:30px;
}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-tip{font-size:13px;color:var(--muted);margin-bottom:22px}
.field-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{margin-bottom:18px;display:flex;flex-direction:column}
.field.span-2{grid-column:span 2}
.field label{font-size:13px;color:var(--ink);font-weight:600;margin-bottom:8px}
.field label .req{color:var(--neg);margin-left:4px}
.field input,.field textarea{
  height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 14px;background:#FBFDFE;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{height:auto;min-height:118px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(22,97,140,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--neg);box-shadow:0 0 0 4px rgba(217,83,79,.1)}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--neg)}
.field.has-error .err{display:block}
.form-foot{margin-top:8px;display:flex;flex-direction:column;gap:12px}
.form-foot .privacy{font-size:13px;color:var(--muted);line-height:1.7}
.form-success{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(47,167,154,.1);color:#1d7a70;font-size:14px;
}
.form-success.is-visible{display:block}

.cta-band{
  background:var(--brand-06);
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
  padding:34px 0;
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band p{font-size:17px;color:var(--ink);font-weight:600}
.cta-band span{display:block;font-size:13px;color:var(--text);font-weight:400;margin-top:6px}

/* 互链 */
.link-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.link-card{
  display:block;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(22,97,140,.28)}
.link-card .lk-tag{font-size:13px;color:var(--brand);font-weight:700;letter-spacing:.06em}
.link-card h3{font-size:17px;margin:10px 0 8px}
.link-card p{font-size:14px;color:var(--text);line-height:1.7}
.link-card .lk-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand)}
.link-card:hover .lk-more{gap:10px}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line-soft);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--ink)}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--brand);margin-bottom:16px}
.footer-brand strong{font-size:16px;color:var(--ink)}
.footer-col p{font-size:14px;line-height:1.8;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:var(--text)}
.footer-col ul a:hover{color:var(--brand);text-decoration:underline}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text);line-height:1.7}
.footer-contact i{color:var(--brand);margin-top:5px}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line-soft);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--muted)}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{font-size:13px;color:var(--muted)}
.fb-links a:hover{color:var(--brand);text-decoration:underline}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .nav-main{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero h1{font-size:30px}
  .section{padding:64px 0}
  .layout-main{padding:52px 0 64px}
  .toc-card{position:static;margin-bottom:34px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media screen and (max-width:640px){
  body{font-size:15px}
  .grid-container{padding-left:16px;padding-right:16px}
  .page-hero{min-height:0}
  .page-hero .hero-inner{padding:36px 0 40px}
  .page-hero h1{font-size:26px}
  .page-hero .hero-sub{font-size:15px}
  .section{padding:52px 0}
  .section-head h2{font-size:23px}
  .article-body h2{font-size:22px;margin-top:40px}
  .mini-grid,.stat-row,.link-cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .issue{flex-direction:column;gap:12px}
  .field-row{grid-template-columns:1fr}
  .field.span-2{grid-column:span 1}
  .form-card{padding:22px}
  .faq-a-inner{padding-left:24px}
  .faq-item.is-open .faq-a-inner{margin-left:16px;padding-left:16px}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:520px){
  .page-hero h1{font-size:23px}
  .brand-text em{font-size:11px}
  .stat b{font-size:28px}
}

/* roulang page: category2 */
:root{
  --brand:#16618C;
  --brand-dark:#0F4A6C;
  --brand-soft:#E8F1F7;
  --accent:#E8A33D;
  --pos:#2FA79A;
  --neg:#D9534F;
  --bg:#F5F8FA;
  --card:#FFFFFF;
  --alt:#EDF3F8;
  --ink:#16232B;
  --text:#5A6B76;
  --muted:#93A3AD;
  --line:#C4D1D9;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,50,70,.05), 0 10px 26px -14px rgba(16,50,70,.16);
  --shadow-hover:0 2px 4px rgba(16,50,70,.06), 0 18px 34px -16px rgba(16,50,70,.24);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius);}
a{color:var(--brand);text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{color:var(--ink);margin:0 0 14px;line-height:1.35;font-weight:700;letter-spacing:.01em;}
h1{font-size:40px;}
h2{font-size:30px;}
h3{font-size:20px;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}

.grid-container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
@media (min-width:1600px){.grid-container{max-width:1320px;}}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(150%) blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--brand);flex:0 0 auto;}
.brand-mark{display:inline-flex;color:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.05;}
.brand-text strong{font-size:18px;color:var(--ink);letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.22em;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 11px;
  font-size:14px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow);}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px);}
.btn-lg{height:50px;padding:0 26px;font-size:16px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid var(--line);color:var(--ink);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,35,43,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;background:#fff;z-index:80;
  padding:22px 20px 30px;overflow-y:auto;
  transform:translateX(102%);transition:transform .28s ease;
  box-shadow:-18px 0 40px -20px rgba(16,50,70,.35);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;font-size:16px;}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-bottom:22px;}
.drawer-cta .btn{width:100%;}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);padding-top:12px;}
.drawer-nav a{
  padding:13px 4px;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;min-height:44px;
}
.drawer-nav a::after{content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--muted);font-size:13px;}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand);}
.drawer-foot{margin-top:22px;font-size:13px;color:var(--muted);line-height:1.9;}

/* ============ hero ============ */
.page-hero{
  position:relative;
  padding:52px 0 56px;
  background-image:linear-gradient(rgba(255,255,255,.86),rgba(255,255,255,.86)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  min-height:240px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;}
.breadcrumb a{color:var(--text);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.page-hero h1{max-width:900px;margin:16px 0 14px;}
.page-hero .hero-sub{max-width:760px;font-size:17px;color:var(--text);margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.hero-note{margin-top:16px;font-size:13px;color:var(--muted);}

/* ============ sections ============ */
.section{padding:96px 0;}
.section-alt{background:var(--alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--brand);
  text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:16px;margin:0;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.head-row .section-head{margin-bottom:0;}

/* 卡片 */
.card{
  background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px;position:relative;height:100%;
  border:1px solid rgba(196,209,217,.55);
  transition:transform .22s ease,box-shadow .22s ease;
  overflow:hidden;
}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);opacity:.85;}
.card.card-accent::before{background:var(--accent);}
.card.card-pos::before{background:var(--pos);}
.card.card-neg::before{background:var(--neg);}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.card h3{margin-bottom:10px;}
.card p{font-size:15px;margin-bottom:14px;}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.card-icon.accent{background:rgba(232,163,61,.14);color:#B67C1F;}
.card-icon.pos{background:rgba(47,167,154,.14);color:#1E8276;}
.grid-gap{row-gap:20px;}

/* 步骤流 */
.step-flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step;
}
.step-item{position:relative;padding-top:0;}
.step-item::after{
  content:"";position:absolute;top:31px;left:74px;right:-16px;height:2px;
  background:linear-gradient(90deg,rgba(22,97,140,.35),rgba(196,209,217,.9));
}
.step-item:last-child::after{display:none;}
.step-num{
  font-family:var(--mono);font-size:16px;font-weight:700;letter-spacing:.02em;
  width:62px;height:62px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);position:relative;z-index:2;box-shadow:var(--shadow);
  margin-bottom:20px;
}
.step-item h3{font-size:18px;margin-bottom:10px;}
.step-item p{font-size:15px;margin-bottom:12px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;font-size:13px;
  background:var(--brand-soft);color:var(--brand);
}
.tag.tag-accent{background:rgba(232,163,61,.16);color:#A96F14;}
.tag.tag-pos{background:rgba(47,167,154,.14);color:#1E8276;}

/* 图文区 */
.split-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);}
.feature-list{display:flex;flex-direction:column;gap:18px;margin-top:24px;}
.feature-list li{display:flex;gap:14px;align-items:flex-start;}
.feature-list i{color:var(--brand);font-size:16px;margin-top:5px;flex:0 0 auto;}
.feature-list strong{display:block;color:var(--ink);font-size:16px;margin-bottom:3px;}
.feature-list span{font-size:15px;color:var(--text);}

/* 数据条 */
.metric-row{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:#fff;border:1px solid rgba(196,209,217,.6);border-radius:var(--radius);
  padding:18px 22px;box-shadow:var(--shadow);
}
.metric-row + .metric-row{margin-top:14px;}
.metric-row .label{font-size:15px;color:var(--ink);font-weight:600;}
.metric-row .label small{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:2px;}
.metric-row .value{font-family:var(--mono);font-size:22px;letter-spacing:.02em;color:var(--brand);white-space:nowrap;}
.metric-row .value.pos{color:var(--pos);}
.metric-row .value.neg{color:var(--neg);}

/* 风险列表 */
.risk-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.risk-item{
  background:#fff;border:1px solid rgba(196,209,217,.6);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.risk-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.risk-item h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.risk-item h3 i{color:var(--neg);font-size:16px;}
.risk-item p{font-size:15px;margin-bottom:0;}

/* FAQ */
.faq-wrap{max-width:900px;}
.faq-item{
  background:#fff;border:1px solid rgba(196,209,217,.6);border-radius:var(--radius);
  box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;align-items:flex-start;gap:16px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .22s ease,background-color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .num{font-family:var(--mono);font-size:14px;color:var(--muted);letter-spacing:.02em;margin-top:4px;}
.faq-item summary .q{flex:1 1 auto;}
.faq-item summary .chev{color:var(--muted);font-size:14px;margin-top:5px;transition:transform .22s ease;}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--brand);}
.faq-item .answer{
  padding:0 24px 22px 62px;font-size:15px;line-height:1.8;color:var(--text);
  position:relative;
}
.faq-item .answer::before{
  content:"";position:absolute;left:24px;top:4px;bottom:22px;width:3px;border-radius:3px;background:var(--brand);
}

/* 相关链接 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:block;background:#fff;border:1px solid rgba(196,209,217,.6);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);color:var(--text);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--brand);color:var(--text);}
.related-card h3{font-size:17px;margin-bottom:8px;}
.related-card p{font-size:14px;margin-bottom:12px;}
.related-card .go{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}

/* 表单 */
.contact-panel{
  background:#fff;border:1px solid rgba(196,209,217,.6);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--ink);font-weight:600;margin-bottom:7px;}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;font-size:15px;color:var(--ink);
  border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(22,97,140,.14);
}
.field .hint{font-size:13px;color:var(--muted);margin-top:6px;}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;margin-bottom:0;}
.point-list li{display:flex;gap:12px;align-items:flex-start;margin-bottom:16px;font-size:15px;}
.point-list i{color:var(--brand);margin-top:5px;}

/* CTA 带 */
.cta-band{
  background:rgba(22,97,140,.08);
  border-top:1px solid rgba(22,97,140,.16);
  border-bottom:1px solid rgba(22,97,140,.16);
  padding:34px 0;
}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:22px;margin:0 0 4px;}
.cta-band p{margin:0;font-size:15px;}

/* footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--brand);margin-bottom:16px;}
.footer-brand strong{font-size:17px;color:var(--ink);}
.footer-col p{font-size:14px;color:var(--text);margin:0;}
.footer-col h3{font-size:15px;color:var(--ink);margin-bottom:16px;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:var(--text);}
.footer-col ul a:hover{color:var(--brand);text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text);align-items:flex-start;}
.footer-contact i{color:var(--brand);margin-top:5px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--muted);margin:0;}
.fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.fb-links a{font-size:13px;color:var(--muted);}
.fb-links a:hover{color:var(--brand);text-decoration:underline;}

/* ============ responsive ============ */
@media (max-width:1200px){
  .nav-main{margin-left:0;gap:0;}
  .nav-link{padding:10px 8px;font-size:13.5px;}
  .nav-cta .btn{padding:0 14px;font-size:14px;}
}
@media (max-width:1024px){
  h1{font-size:32px;}
  h2{font-size:25px;}
  .nav-main{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .step-flow{grid-template-columns:repeat(2,1fr);row-gap:32px;}
  .step-item::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:76px 0;}
  .related-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .page-hero{padding:36px 0 40px;}
  .page-hero .hero-sub{font-size:16px;}
  .section{padding:60px 0;}
  .risk-list{grid-template-columns:1fr;}
  .head-row{margin-bottom:28px;}
  .section-head{margin-bottom:30px;}
  .faq-item .answer{padding-left:24px;}
  .faq-item .answer::before{left:24px;width:2px;}
}
@media (max-width:640px){
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  body{font-size:15px;}
  .step-flow{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .nav-wrap{height:68px;}
  .hero-actions .btn{width:100%;}
  .metric-row{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-item summary{font-size:16px;padding:18px;}
  .faq-item .answer{padding:0 18px 20px 18px;}
  .faq-item .answer::before{display:none;}
  .cta-band .inner .btn{width:100%;}
}
@media (max-width:520px){
  .grid-container{padding:0 16px;}
  .card{padding:20px;}
  .contact-panel{padding:20px;}
  .brand-text strong{font-size:16px;}
}

/* roulang page: category3 */
:root{
  --brand:#16618C;
  --brand-dark:#0F4A6C;
  --brand-soft:#E8F1F7;
  --accent:#E8A33D;
  --bg:#F5F8FA;
  --bg-alt:#EDF3F8;
  --card:#FFFFFF;
  --text:#16232B;
  --text-soft:#5A6B76;
  --text-mute:#93A3AD;
  --line:#C4D1D9;
  --ok:#2FA79A;
  --bad:#D9534F;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,50,70,.05), 0 10px 26px -14px rgba(16,50,70,.16);
  --shadow-hover:0 2px 4px rgba(16,50,70,.06), 0 20px 36px -16px rgba(16,50,70,.26);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--text);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.mono{font-family:var(--mono);letter-spacing:.02em;}

.grid-container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media screen and (min-width:1200px){
  .grid-container{max-width:1320px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -10px rgba(22,97,140,.7);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.btn-text i{font-size:12px;transition:transform .22s ease;}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(160%) blur(6px);
}
.nav-wrap{
  display:flex;align-items:center;gap:24px;
  min-height:72px;padding-top:8px;padding-bottom:8px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--brand);flex:0 0 auto;}
.brand-mark{display:inline-flex;color:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-mute);letter-spacing:.24em;}
.nav-main{display:flex;align-items:center;gap:22px;flex:1 1 auto;justify-content:center;}
.nav-link{
  position:relative;font-size:14px;color:var(--text-soft);font-weight:500;white-space:nowrap;
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;color:var(--brand);font-size:18px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);}

/* 抽屉 */
.nav-mask{
  position:fixed;inset:0;background:rgba(22,35,43,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.nav-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:#fff;box-shadow:-12px 0 40px -20px rgba(16,50,70,.4);
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:#fff;color:var(--text-soft);font-size:16px;cursor:pointer;
}
.drawer-close:hover{color:var(--brand);border-color:var(--brand);}
.drawer-cta{display:flex;flex-direction:column;gap:12px;margin-bottom:22px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line);padding-top:14px;}
.drawer-nav a{
  padding:12px 12px;border-radius:var(--radius-sm);font-size:15px;color:var(--text-soft);
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:16px;font-size:13px;color:var(--text-mute);}
.drawer-foot p{margin-bottom:6px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 0;font-size:13px;color:var(--text-mute);}
.crumb a{color:var(--text-soft);}
.crumb a:hover{color:var(--brand);text-decoration:underline;}
.crumb .sep{color:var(--line);}
.crumb .now{color:var(--text);font-weight:600;}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;min-height:240px;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.84);}
.hero-inner{position:relative;z-index:2;padding:44px 0 40px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-soft);color:var(--brand);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;margin-bottom:16px;
}
.page-hero h1{font-size:40px;max-width:920px;letter-spacing:-.01em;}
.hero-sub{margin-top:14px;font-size:17px;color:var(--text-soft);max-width:780px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-note{margin-top:16px;font-size:13px;color:var(--text-mute);}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-white{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{font-size:30px;position:relative;padding-left:16px;}
.section-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--brand);
}
.section-head.center .section-title{padding-left:0;}
.section-head.center .section-title::before{display:none;}
.section-desc{margin-top:14px;color:var(--text-soft);font-size:16px;}

/* ---------- 表格 ---------- */
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:auto;max-height:560px;
}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px;}
.cmp-table thead th{
  position:sticky;top:0;z-index:3;background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:700;letter-spacing:.06em;text-align:left;
  padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.cmp-table tbody td{
  padding:18px;border-bottom:1px solid #E4ECF1;color:var(--text-soft);vertical-align:middle;
}
.cmp-table tbody tr:nth-child(even){background:var(--bg);}
.cmp-table tbody tr:last-child td{border-bottom:0;}
.cmp-table tbody td:first-child{color:var(--text);font-weight:600;}
.tag{
  display:inline-block;font-size:13px;font-weight:600;border-radius:999px;padding:4px 12px;
  background:var(--brand-soft);color:var(--brand);white-space:nowrap;
}
.tag-ok{background:rgba(47,167,154,.12);color:#1F7D73;}
.tag-warn{background:rgba(232,163,61,.16);color:#9A6612;}
.tag-limit{background:rgba(217,83,79,.12);color:#B33F3B;}

/* ---------- 卡片混排 ---------- */
.card-grid{margin-top:0;}
.mcard{
  position:relative;height:100%;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.mcard::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:56px;background:var(--brand);border-radius:0 3px 3px 0;
}
.mcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#A9C6D8;}
.mcard h3{font-size:20px;margin-bottom:10px;}
.mcard p{color:var(--text-soft);font-size:15px;}
.mcard .btn-text{margin-top:16px;}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.mcard-lg{padding:0;display:flex;flex-direction:column;}
.mcard-lg .card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius) var(--radius) 0 0;}
.mcard-lg .card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.mcard-lg:hover .card-thumb img{transform:scale(1.04);}
.mcard-lg .card-body{padding:24px 26px 26px;}
.mcard-lg h3{margin-top:0;}

/* ---------- 指标对比 ---------- */
.mc-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.mc-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
}
.mc-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:16px;}
.mc-name{font-size:15px;font-weight:600;color:var(--text);}
.mc-delta{font-size:13px;font-weight:700;font-family:var(--mono);letter-spacing:.02em;}
.mc-delta.up{color:var(--ok);}
.mc-delta.down{color:var(--ok);}
.mc-delta.risk{color:var(--bad);}
.mc-line{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.mc-line:last-child{margin-bottom:0;}
.mc-tag{flex:0 0 52px;font-size:13px;color:var(--text-mute);}
.mc-track{flex:1 1 auto;height:9px;border-radius:999px;background:var(--bg-alt);overflow:hidden;}
.mc-track i{display:block;height:100%;border-radius:999px;}
.bar-before{background:var(--line);}
.bar-after{background:var(--brand);}
.bar-warn{background:var(--accent);}
.bar-risk{background:var(--bad);}
.mc-val{flex:0 0 auto;font-size:14px;font-weight:700;color:var(--text);min-width:52px;text-align:right;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:#A9C6D8;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  background:none;border:0;cursor:pointer;padding:20px 24px;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
}
.faq-q .faq-num{
  font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--text-mute);
  flex:0 0 auto;position:relative;padding-left:12px;
}
.faq-q .faq-num::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:3px;background:var(--line);transition:background .22s ease;
}
.faq-q .faq-txt{flex:1 1 auto;}
.faq-q .faq-ico{flex:0 0 auto;color:var(--text-mute);font-size:14px;transition:transform .25s ease,color .22s ease;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a-inner{padding:0 24px 22px 56px;color:var(--text-soft);font-size:15px;line-height:1.8;}
.faq-item.is-open{border-color:var(--brand);}
.faq-item.is-open .faq-num::before{background:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-ico{transform:rotate(180deg);color:var(--brand);}

/* ---------- CTA 带 ---------- */
.cta-band{background:rgba(22,97,140,.08);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 0;flex-wrap:wrap;
}
.cta-band h2{font-size:22px;}
.cta-band p{color:var(--text-soft);font-size:15px;margin-top:6px;}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 互链 ---------- */
.crosslinks{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cross-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.cross-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#A9C6D8;color:var(--text);}
.cross-card span{display:block;font-size:13px;color:var(--text-mute);margin-bottom:8px;letter-spacing:.04em;}
.cross-card strong{display:block;font-size:17px;color:var(--text);margin-bottom:8px;}
.cross-card em{font-style:normal;font-size:14px;color:var(--text-soft);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2B3C;color:#C7D8E2;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:#C7D8E2;font-size:14px;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;}
.footer-brand .brand-mark{color:#66B3DC;}
.footer-brand strong{font-size:17px;color:#fff;}
.footer-col p{font-size:14px;line-height:1.8;color:#9DB6C6;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#9DB6C6;margin-bottom:12px;}
.footer-contact i{margin-top:4px;color:#66B3DC;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#8FA9BA;}
.fb-links{display:flex;gap:18px;flex-wrap:wrap;}
.fb-links a{font-size:13px;color:#8FA9BA;}
.fb-links a:hover{color:#fff;text-decoration:underline;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
  .nav-main{gap:16px;}
  .nav-link{font-size:13px;}
}
@media screen and (max-width:1024px){
  .nav-main,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto;}
  .section{padding:72px 0;}
  .page-hero h1{font-size:32px;}
  .mc-wrap{grid-template-columns:1fr;}
  .crosslinks{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
}
@media screen and (max-width:768px){
  .section{padding:56px 0;}
  .page-hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .section-title{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band .inner{padding:28px 0;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{flex:1 1 auto;}
}
@media screen and (max-width:640px){
  .table-wrap{max-height:none;border:0;box-shadow:none;background:transparent;overflow:visible;}
  .cmp-table thead{display:none;}
  .cmp-table,.cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%;}
  .cmp-table tbody tr{
    background:#fff !important;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);padding:8px 18px 14px;margin-bottom:16px;
  }
  .cmp-table tbody td{
    border-bottom:1px dashed #E4ECF1;padding:12px 0;
    display:flex;justify-content:space-between;gap:14px;align-items:flex-start;
  }
  .cmp-table tbody td:last-child{border-bottom:0;}
  .cmp-table tbody td::before{
    content:attr(data-label);flex:0 0 84px;font-size:13px;color:var(--text-mute);font-weight:500;
  }
  .cmp-table tbody td:first-child{padding-top:14px;}
  .mcard{padding:22px;}
  .mcard-lg .card-body{padding:20px;}
  .faq-q{padding:16px 18px;font-size:16px;gap:12px;}
  .faq-a-inner{padding:0 18px 18px 46px;}
  .mc-item{padding:20px;}
  .cross-card{padding:18px 20px;}
}
@media screen and (max-width:520px){
  .grid-container{padding:0 16px;}
  .page-hero h1{font-size:24px;}
  .hero-actions .btn{flex:1 1 100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category4 */
/* ===== 设计令牌 ===== */
:root{
  --primary:#16618C;
  --primary-hover:#0F4A6C;
  --primary-tint:#E8F1F7;
  --primary-soft:#EAF2F8;
  --amber:#E8A33D;
  --pos:#2FA79A;
  --neg:#D9534F;
  --bg:#F5F8FA;
  --card:#FFFFFF;
  --alt:#EDF3F8;
  --ink:#16232B;
  --body:#5A6B76;
  --muted:#93A3AD;
  --line:#C4D1D9;
  --line-soft:#DCE6ED;
  --radius:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(16,50,70,.05), 0 10px 26px -14px rgba(16,50,70,.16);
  --shadow-hover:0 2px 4px rgba(16,50,70,.07), 0 18px 34px -14px rgba(16,50,70,.24);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --maxw:1200px;
  --maxw-xl:1320px;
  --ease:.22s ease;
}

/* ===== 基础重置 ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.32;font-weight:700;letter-spacing:.005em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* ===== 容器 ===== */
.grid-container{max-width:var(--maxw);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
@media screen and (min-width:1200px){.grid-container{max-width:var(--maxw-w,x);}}
@media screen and (min-width:1201px){.grid-container{max-width:var(--maxw)}}

.section{padding:96px 0}
.section--alt{background:var(--alt)}
.section--tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--primary);background:var(--primary-tint);border-radius:var(--radius-pill);
  padding:5px 14px;margin-bottom:16px;
}
.section-title{font-size:30px;margin-bottom:14px}
.section-title::after{content:"";display:block;width:48px;height:2px;background:var(--primary);margin-top:16px;border-radius:2px}
.section-desc{font-size:15px;color:var(--body)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn i{font-size:13px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px -12px rgba(22,97,140,.9)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-tint);color:var(--primary-hover);border-color:var(--primary-hover)}
.btn-lg{height:48px;padding:0 26px;font-size:15px;border-radius:12px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
  border:0;background:none;padding:0;height:auto;cursor:pointer;
}
.btn-text:hover{color:var(--primary-hover)}
.btn-text i{transition:transform var(--ease)}
.btn-text:hover i{transform:translateX(3px)}
.btn:active{transform:translateY(0) scale(.99)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-tint);color:var(--primary);
  font-size:13px;font-weight:600;line-height:1;
  padding:6px 12px;border-radius:var(--radius-pill);
}
.badge--amber{background:rgba(232,163,61,.14);color:#A76E14}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line-soft);
  box-shadow:0 1px 2px rgba(16,50,70,.04);
}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;color:var(--primary);flex-shrink:0}
.brand:hover{color:var(--primary-hover)}
.brand-mark{display:inline-flex;color:var(--primary)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.08em}
.nav-main{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-link{
  position:relative;font-size:14px;color:var(--body);font-weight:500;
  padding:9px 12px;border-radius:8px;white-space:nowrap;
}
.nav-link:hover{color:var(--primary);background:var(--primary-tint)}
.nav-link.is-active{color:var(--primary);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line-soft);
  background:#fff;color:var(--primary);font-size:17px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--primary-tint);border-color:var(--primary)}

/* 移动端抽屉 */
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(330px,86vw);
  background:#fff;z-index:90;padding:22px 20px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
  box-shadow:-20px 0 44px -26px rgba(16,50,70,.35);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-head strong{font-size:16px;color:var(--ink)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-soft);background:#fff;
  color:var(--body);font-size:16px;cursor:pointer;
}
.drawer-close:hover{background:var(--primary-tint);color:var(--primary)}
.drawer-cta{display:grid;gap:10px;margin-bottom:22px}
.drawer-cta .btn{width:100%;height:44px}
.drawer-title{font-size:13px;color:var(--muted);letter-spacing:.1em;margin:0 0 10px}
.drawer-links{display:grid;gap:2px;margin-bottom:24px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:10px 12px;border-radius:10px;color:var(--body);font-size:15px;
}
.drawer-links a:hover,.drawer-links a.is-active{background:var(--primary-tint);color:var(--primary);font-weight:600}
.drawer-foot{border-top:1px solid var(--line-soft);padding-top:16px;font-size:13px;color:var(--muted);line-height:1.9}
.nav-mask{
  position:fixed;inset:0;background:rgba(22,35,43,.45);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ===== Hero（分类页小尺寸） ===== */
.hero{
  position:relative;min-height:240px;display:flex;align-items:center;
  background:
    linear-gradient(rgba(255,255,255,.88),rgba(255,255,255,.88)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line-soft);
  padding:52px 0;
}
.hero-inner{max-width:860px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--primary);font-weight:600}
.hero h1{font-size:36px;line-height:1.28;margin:14px 0 16px}
.hero-sub{font-size:16px;color:var(--body);max-width:720px}
.hero-intro{font-size:15px;color:var(--body);margin-top:12px;max-width:760px}

/* ===== 要点网格 ===== */
.point-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.point-card{
  position:relative;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.point-card::before{content:"";position:absolute;left:0;top:0;width:3px;height:100%;background:var(--primary)}
.point-card:nth-child(2)::before{background:var(--amber)}
.point-card:nth-child(3)::before{background:var(--pos)}
.point-card:nth-child(4)::before{background:#5B8DB8}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BED4E2}
.point-icon{
  width:40px;height:40px;border-radius:12px;background:var(--primary-tint);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:16px;
}
.point-card h3{font-size:18px;margin-bottom:10px}
.point-card p{font-size:14px;line-height:1.8;color:var(--body)}

/* ===== 图文交错（zigzag） ===== */
.zig-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:72px;align-items:center;
}
.zig-row + .zig-row{margin-top:72px}
.zig-row--reverse .zig-media{order:-1}
.zig-media{
  border-radius:var(--radius);overflow:hidden;background:var(--alt);
  box-shadow:var(--shadow);border:1px solid var(--line-soft);
  aspect-ratio:16/9;
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.zig-row:hover .zig-media img{transform:scale(1.02)}
.zig-body .badge{margin-bottom:14px}
.zig-body h3{font-size:22px;margin-bottom:14px}
.zig-body p{font-size:15px;line-height:1.85;margin-bottom:14px}
.zig-list{margin:0 0 18px;display:grid;gap:8px}
.zig-list li{position:relative;padding-left:18px;font-size:14px;color:var(--body)}
.zig-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--primary);
}
.zig-link{display:inline-flex}
.zig-index{
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--muted);display:block;margin-bottom:6px;
}

/* ===== 深色承接区块 ===== */
.commit-band{background:var(--primary-hover);color:rgba(255,255,255,.86);padding:88px 0}
.commit-band .eyebrow{background:rgba(255,255,255,.14);color:#fff}
.commit-band h2{color:#fff;font-size:30px;margin-bottom:14px}
.commit-band p{color:rgba(255,255,255,.82);font-size:15px}
.commit-quote{
  border-left:3px solid var(--amber);padding:4px 0 4px 20px;margin:28px 0 40px;
  font-size:17px;line-height:1.8;color:#fff;max-width:820px;
}
.commit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.commit-item{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:24px;transition:background-color var(--ease),transform var(--ease);
}
.commit-item:hover{background:rgba(255,255,255,.12);transform:translateY(-3px)}
.commit-item h3{color:#fff;font-size:17px;margin-bottom:10px;display:flex;align-items:center;gap:9px}
.commit-item h3 i{color:var(--amber);font-size:15px}
.commit-item p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.78)}
.commit-num{
  font-family:var(--mono);font-size:28px;color:#fff;letter-spacing:.02em;display:block;margin-bottom:6px;
}
.commit-num small{font-size:13px;color:rgba(255,255,255,.7);margin-left:6px;letter-spacing:.02em}

/* ===== 常见问题 ===== */
.faq-list{display:grid;gap:16px}
.faq-item{
  display:grid;grid-template-columns:64px minmax(0,1fr);
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px 26px;
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#BED4E2}
.faq-num{font-family:var(--mono);font-size:15px;color:var(--primary);letter-spacing:.06em;padding-top:2px}
.faq-item h3{font-size:17px;margin-bottom:9px}
.faq-item p{font-size:15px;line-height:1.85}

/* ===== 站内互链 ===== */
.cross-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.cross-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cross-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BED4E2}
.cross-card .cross-label{font-size:13px;color:var(--muted);letter-spacing:.08em}
.cross-card strong{font-size:17px;color:var(--ink);line-height:1.5}
.cross-card span.desc{font-size:14px;color:var(--body);line-height:1.8}
.cross-card i{color:var(--primary);font-size:13px}

/* ===== CTA 带 ===== */
.cta-band{background:var(--primary-soft);border-top:1px solid #D6E4EE;border-bottom:1px solid #D6E4EE;padding:36px 0}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band p{font-size:16px;color:var(--ink);font-weight:600}
.cta-band small{display:block;font-size:13px;color:var(--body);font-weight:400;margin-top:4px}

/* ===== 页脚 ===== */
.site-footer{background:#fff;border-top:1px solid var(--line-soft);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--primary);margin-bottom:16px}
.footer-brand strong{font-size:16px;color:var(--ink)}
.footer-col h3{font-size:15px;margin-bottom:18px;color:var(--ink)}
.footer-col p{font-size:14px;line-height:1.85;color:var(--body);max-width:340px}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{font-size:14px;color:var(--body)}
.footer-col ul a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.footer-contact li{display:flex;gap:10px;font-size:14px;line-height:1.75;color:var(--body)}
.footer-contact i{color:var(--primary);margin-top:5px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line-soft);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--muted)}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{font-size:13px;color:var(--muted)}
.fb-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}

/* ===== 响应式 ===== */
@media screen and (max-width:1024px){
  .nav-main,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .zig-row{gap:44px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .commit-grid{grid-template-columns:1fr 1fr}
}
@media screen and (max-width:1023px){
  .section{padding:72px 0}
  .hero h1{font-size:30px}
}
@media screen and (max-width:768px){
  .grid-container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .hero{padding:40px 0;min-height:220px}
  .hero h1{font-size:25px}
  .hero-sub,.hero-intro{font-size:15px}
  .section-title{font-size:23px}
  .zig-row{grid-template-columns:1fr;gap:24px}
  .zig-row--reverse .zig-media{order:0}
  .zig-row + .zig-row{margin-top:48px}
  .commit-grid{grid-template-columns:1fr}
  .cross-links{grid-template-columns:1fr}
  .commit-band{padding:56px 0}
  .commit-band h2{font-size:23px}
  .commit-quote{font-size:16px}
}
@media screen and (max-width:640px){
  .point-grid{grid-template-columns:1fr}
  .faq-item{grid-template-columns:1fr;gap:10px;padding:22px 20px}
  .faq-num{padding-top:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:520px){
  body{font-size:15px}
  .hero h1{font-size:23px}
  .brand-text strong{font-size:16px}
  .point-card{padding:22px 20px}
}

/* roulang page: category5 */
/* ============ 设计令牌 ============ */
:root{
  --c-primary:#16618C;
  --c-primary-dark:#0F4A6C;
  --c-primary-soft:#E8F1F7;
  --c-accent:#E8A33D;
  --c-up:#2FA79A;
  --c-down:#D9534F;
  --bg:#F5F8FA;
  --bg-alt:#EDF3F8;
  --surface:#FFFFFF;
  --ink:#16232B;
  --body:#5A6B76;
  --muted:#93A3AD;
  --line:#C4D1D9;
  --line-soft:#E3EBF0;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(16,50,70,.05),0 10px 26px -14px rgba(16,50,70,.16);
  --sh-hover:0 1px 2px rgba(16,50,70,.06),0 18px 34px -16px rgba(16,50,70,.26);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  --ease:.22s ease;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),border-color var(--ease)}
a:hover{color:var(--c-primary-dark)}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{line-height:1.35;color:var(--ink)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ============ 容器与通用 ============ */
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:96px 0}
.section--alt{background:var(--bg-alt)}
.section--mesh{
  background-color:var(--c-primary-soft);
  background-image:linear-gradient(rgba(22,97,140,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(22,97,140,.055) 1px,transparent 1px);
  background-size:28px 28px;
}
.section-head{max-width:760px;margin:0 0 44px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:16px}
.section-head h2{font-size:30px;margin-bottom:14px}
.section-head p{font-size:15.5px;color:var(--body);max-width:680px}
.rule{width:48px;height:2px;background:var(--c-primary);border-radius:2px;margin:18px 0 0}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 12px;line-height:1.6}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px -12px rgba(22,97,140,.75)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--c-primary);border-color:#fff}
.btn-light:hover{background:#fff;color:var(--c-primary-dark);transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.link-more i{font-size:12px;transition:transform var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line-soft);
  box-shadow:0 1px 2px rgba(16,50,70,.04);
}
.nav-wrap{max-width:1320px;display:flex;align-items:center;gap:26px;height:74px;padding-left:20px;padding-right:20px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{line-height:0;color:var(--c-primary)}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text strong{font-size:17px;letter-spacing:.01em;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--c-primary)}
.nav-main{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-link{position:relative;font-size:14px;color:#3F5563;padding:6px 0;font-weight:500}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--c-primary);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-cta .btn{height:42px;padding:0 16px;font-size:14px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line-soft);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;flex:0 0 auto;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* 移动抽屉 */
.nav-mask{position:fixed;inset:0;background:rgba(22,35,43,.45);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(88vw,352px);
  background:#fff;z-index:80;padding:22px;overflow-y:auto;
  transform:translateX(103%);transition:transform .28s ease;
  box-shadow:-18px 0 40px -22px rgba(16,50,70,.4);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink)}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-soft);background:#fff;color:var(--ink);cursor:pointer}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary)}
.drawer-cta{display:grid;gap:10px;margin-bottom:22px}
.drawer-cta .btn{width:100%}
.drawer-nav{display:grid;gap:2px;border-top:1px solid var(--line-soft);padding-top:14px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;padding:13px 4px;font-size:15px;color:#3F5563;border-bottom:1px solid var(--line-soft)}
.drawer-nav a::after{content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;color:var(--muted)}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:700}
.drawer-foot{margin-top:24px;font-size:13px;color:var(--muted);line-height:1.9}

/* ============ 页面小 Hero ============ */
.page-hero{
  min-height:240px;padding:52px 0 46px;
  background-image:linear-gradient(rgba(255,255,255,.88),rgba(255,255,255,.88)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:20px}
.breadcrumb a{color:var(--body)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--c-primary);font-weight:600}
.page-hero h1{font-size:40px;letter-spacing:-.01em;max-width:900px}
.page-hero .lede{margin-top:18px;font-size:16px;color:var(--body);max-width:760px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ============ 指标卡组 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.stat-card{
  position:relative;background:var(--surface);border:1px solid var(--line-soft);
  border-radius:var(--r-card);padding:26px 28px 24px;box-shadow:var(--sh-card);
  overflow:hidden;transition:transform var(--ease),box-shadow var(--ease);
}
.stat-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary)}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.stat-label{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--body);font-weight:600}
.stat-label i{color:var(--c-accent)}
.stat-num{
  font-family:var(--mono);font-size:36px;font-weight:700;color:var(--c-primary);
  letter-spacing:.02em;line-height:1.15;margin-top:14px;display:flex;align-items:baseline;gap:4px;
}
.stat-num .unit{font-size:16px;font-weight:600;color:var(--c-primary);letter-spacing:0}
.stat-num.up{color:var(--c-up)}
.stat-note{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.75}
.stat-caliber{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line-soft);font-size:13px;color:var(--muted)}

/* ============ 现象定位（图文双栏） ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px;align-items:start}
.media-card{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-soft);
  box-shadow:var(--sh-card);background:#fff;
}
.media-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.media-card figcaption{padding:16px 20px;font-size:13px;color:var(--muted);border-top:1px solid var(--line-soft)}
.signal-list{display:grid;gap:14px}
.signal-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line-soft);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease);
}
.signal-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.signal-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:16px;
}
.signal-item h3{font-size:17px;margin-bottom:6px}
.signal-item p{font-size:14.5px;color:var(--body)}
.signal-item p strong{color:var(--c-primary-dark);font-weight:600}

/* ============ 折叠面板 ============ */
.fold-list{display:grid;gap:14px;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}
.fold{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;transition:box-shadow var(--ease),border-color var(--ease);
}
.fold:hover{border-color:#CFE0EA}
.fold[open]{box-shadow:var(--sh-hover);border-color:#CFE0EA}
.fold summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;
  transition:color var(--ease),background var(--ease);
}
.fold summary::-webkit-details-marker{display:none}
.fold summary:hover{color:var(--c-primary);background:#FBFDFE}
.fold[open] summary{color:var(--c-primary);box-shadow:inset 3px 0 0 var(--c-primary)}
.fold-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:11px;transition:transform var(--ease);
}
.fold[open] .fold-icon{transform:rotate(180deg)}
.fold-body{padding:18px 24px 22px;border-top:1px solid var(--bg-alt);font-size:15px;line-height:1.85;color:var(--body)}
.fold-body p{margin-bottom:10px}
.fold-body p:last-child{margin-bottom:0}
.fold-body ul{margin:12px 0 4px}
.fold-body li{position:relative;padding-left:18px;margin-bottom:8px;font-size:14.5px}
.fold-body li::before{content:"";position:absolute;left:0;top:.66em;width:7px;height:7px;border-radius:2px;background:var(--c-primary)}
.fold-body .hint{
  display:block;margin-top:14px;padding:12px 14px;border-radius:10px;
  background:var(--c-primary-soft);color:var(--c-primary-dark);font-size:13.5px;line-height:1.8;
}

/* ============ 站内互链 ============ */
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.link-card{
  display:block;background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-card);height:100%;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE0EA}
.link-card .idx{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.08em}
.link-card h3{font-size:18px;margin:12px 0 10px;color:var(--ink)}
.link-card p{font-size:14px;color:var(--body)}
.link-card .go{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--c-primary)}
.link-card:hover .go i{transform:translateX(3px)}
.link-card .go i{font-size:12px;transition:transform var(--ease)}

/* ============ CTA 带 ============ */
.cta-band{padding:64px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--line-soft);border-radius:18px;
  padding:34px 36px;box-shadow:var(--sh-card);
  border-left:4px solid var(--c-primary);
}
.cta-inner h2{font-size:24px;margin-bottom:8px}
.cta-inner p{font-size:14.5px;color:var(--body);max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#0F2635;color:#C6D6E0;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand .brand-mark{color:#5FB2DE}
.footer-brand strong{font-size:17px;color:#fff}
.footer-col p{font-size:14px;color:#9FB6C4;line-height:1.9}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:18px;letter-spacing:.06em}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:#9FB6C4}
.footer-col ul a:hover{color:#5FB2DE;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#9FB6C4;align-items:flex-start}
.footer-contact i{color:#5FB2DE;margin-top:5px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:#8AA3B2}
.fb-links{display:flex;gap:22px;flex-wrap:wrap}
.fb-links a{font-size:13px;color:#8AA3B2}
.fb-links a:hover{color:#5FB2DE;text-decoration:underline}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-wrap{max-width:1200px}
}
@media (max-width:1023px){
  .nav-main,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .section{padding:72px 0}
  .page-hero{padding:44px 0 40px}
  .page-hero h1{font-size:32px}
  .section-head h2{font-size:25px}
  .split{grid-template-columns:1fr;gap:32px}
  .fold-list{grid-template-columns:1fr}
  .link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .stat-grid{grid-template-columns:1fr}
  .link-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:639px){
  body{font-size:15px}
  .section{padding:56px 0}
  .page-hero{min-height:auto;padding:34px 0 34px}
  .page-hero h1{font-size:26px}
  .page-hero .lede{font-size:15px}
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:23px}
  .stat-card{padding:22px 20px}
  .stat-num{font-size:30px}
  .signal-item{padding:18px}
  .fold summary{padding:17px 18px;font-size:15px}
  .fold-body{padding:16px 18px 20px}
  .cta-band{padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}