/* roulang page: index */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-ok:#4E7A6A;
  --r-card:12px;
  --r-btn:8px;
  --shadow-card:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --shadow-hover:0 12px 32px rgba(27,36,48,.10);
  --space-section:96px;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-d)}
button{font-family:inherit;margin:0}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ===== layout ===== */
.content{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:0 0 var(--space-section)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-title{position:relative;padding-left:16px;font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--c-text)}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-accent)}
.section-desc{margin-top:8px;font-size:15px;color:var(--c-text-2);max-width:620px}

/* ===== foundation gutter override ===== */
.grid-padding-x{margin-left:-12px;margin-right:-12px}
.grid-padding-x > .cell{padding-left:12px;padding-right:12px}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x > .cell{margin-left:12px;margin-right:12px}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(38,67,107,.18)}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-accent),0 8px 20px rgba(38,67,107,.24)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);border-color:var(--c-primary-d)}
.btn-ghost:active{transform:translateY(1px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary)}
.link-arrow svg{transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:active{color:var(--c-primary-d)}

/* ===== side nav ===== */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:80;
}
.brand{padding:22px 20px 18px;border-bottom:1px solid var(--c-line)}
.brand-mark{font-size:17px;font-weight:700;line-height:1.4;color:var(--c-primary);letter-spacing:-.01em}
.brand-sub{margin-top:4px;font-size:12px;color:var(--c-text-3);letter-spacing:.02em}
.nav-scroll{flex:1;overflow-y:auto;padding:14px 0}
.nav-group-title{padding:8px 20px;font-size:11px;letter-spacing:.08em;color:var(--c-text-3)}
.nav-list a{
  display:flex;align-items:center;height:44px;padding:0 20px;
  border-left:3px solid transparent;
  font-size:14px;color:var(--c-text-2);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-list a:hover{background:var(--c-primary-50);color:var(--c-primary);border-left-color:rgba(180,81,58,.4)}
.nav-list a.active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600;border-left-color:var(--c-accent)}
.nav-list a:active{background:#E3EAF3}
.side-foot{padding:18px 20px 20px;border-top:1px solid var(--c-line)}
.side-foot .btn{width:100%;height:44px;font-size:14px;padding:0 12px}
.side-contact{margin-top:14px;font-size:12px;line-height:1.9;color:var(--c-text-2)}
.side-icp{margin-top:10px;font-size:12px;color:var(--c-text-3)}

/* ===== mobile bar / drawer ===== */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:#fff;border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;z-index:90;
}
.mobile-brand{font-size:15px;font-weight:700;color:var(--c-primary);letter-spacing:-.01em}
.burger{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:0;border-radius:8px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--c-primary);position:relative;border-radius:2px}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--c-primary);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(27,36,48,.42);z-index:75}
.drawer-mask.show{display:block}

/* ===== hero ===== */
.hero{padding:56px 0 72px}
.hero-row{align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-primary);background:var(--c-primary-50);
  border:1px solid #DCE4EF;border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.hero h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.02em;color:var(--c-text);margin-bottom:16px}
.hero-sub{font-size:18px;line-height:1.7;color:var(--c-text-2);margin-bottom:28px;max-width:520px}
.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.trust-bar{display:flex;flex-wrap:wrap;border-top:1px solid var(--c-line);padding-top:18px;max-width:560px}
.trust-bar li{padding:0 18px;border-left:1px solid var(--c-line);font-size:12px;color:var(--c-text-2);line-height:1.6}
.trust-bar li:first-child{padding-left:0;border-left:0}
.trust-bar strong{display:block;font-size:17px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.hero-media{position:relative;padding-bottom:26px}
.hero-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;
  border:1px solid rgba(27,36,48,.06);box-shadow:var(--shadow-card);
}
.hero-float{
  position:absolute;left:18px;bottom:0;background:#fff;border:1px solid var(--c-line);
  border-radius:12px;box-shadow:var(--shadow-card);padding:12px 18px;
  display:flex;gap:22px;align-items:center;
}
.hero-float div span{display:block;font-size:11px;color:var(--c-text-3);letter-spacing:.02em}
.hero-float div strong{font-size:19px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.hero-float .sep{width:1px;height:30px;background:var(--c-line)}

/* ===== metrics ===== */
.metric-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 20px;box-shadow:var(--shadow-card);height:100%;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.metric-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CBD6E4}
.metric-num{font-size:40px;line-height:1.1;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--c-primary)}
.metric-num.is-accent{color:var(--c-accent)}
.metric-num small{font-size:15px;font-weight:600;margin-left:4px;letter-spacing:0}
.metric-label{margin-top:6px;font-size:13px;color:var(--c-text-2)}
.trend{position:absolute;top:16px;right:16px;font-size:12px;line-height:1.6;padding:1px 8px;border-radius:999px;font-weight:600}
.trend.up{color:var(--c-ok);background:rgba(78,122,106,.12)}
.trend.down{color:var(--c-accent);background:rgba(180,81,58,.12)}
.metric-cell{margin-bottom:24px}

/* ===== service matrix ===== */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.matrix-item{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;overflow:hidden;
}
.matrix-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CBD6E4}
.matrix-item .idx{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-accent);font-variant-numeric:tabular-nums}
.matrix-item .ico{width:28px;height:28px;margin:10px 0 6px;color:var(--c-primary)}
.matrix-item h3{font-size:18px;line-height:1.5;font-weight:700;margin-bottom:8px}
.matrix-item p{font-size:14px;line-height:1.7;color:var(--c-text-2);margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.matrix-item .more{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.matrix-item .more svg{transition:transform .18s ease}
.matrix-item:hover .more svg{transform:translateX(4px)}
.m1{grid-column:span 6;min-height:300px;justify-content:flex-end;color:#fff;border-color:transparent}
.m1 .m-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.m1::after{content:"";position:absolute;inset:0;background:rgba(27,50,82,.82)}
.m1 > *{position:relative;z-index:2}
.m1 .idx{color:#E8B7A6}
.m1 .ico{color:#fff}
.m1 h3{color:#fff;font-size:20px}
.m1 p{color:rgba(255,255,255,.82);-webkit-line-clamp:3}
.m1 .more{color:#fff}
.m2,.m3,.m4,.m6{grid-column:span 3}
.m5{grid-column:span 6}

/* ===== compare ===== */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-card)}
.compare-card.is-plain{background:#F2F3F0;box-shadow:none}
.compare-card.is-focus{border-color:rgba(38,67,107,.38);box-shadow:0 0 0 1px rgba(38,67,107,.08),var(--shadow-card)}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:6px}
.compare-head h3{font-size:17px;font-weight:700}
.compare-head .tag{font-size:12px;padding:2px 10px;border-radius:999px;background:rgba(38,67,107,.1);color:var(--c-primary);font-weight:600}
.compare-head .tag.muted{background:rgba(138,147,160,.14);color:var(--c-text-2)}
.compare-list li{display:flex;gap:12px;align-items:flex-start;padding:13px 0;font-size:15px;color:var(--c-text);border-bottom:1px dashed var(--c-line)}
.compare-list li:last-child{border-bottom:0}
.compare-list .mark{flex:0 0 20px;width:20px;height:20px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-top:2px}
.mark.ok{background:rgba(38,67,107,.1);color:var(--c-primary)}
.mark.no{background:rgba(138,147,160,.16);color:var(--c-text-3)}
.bar-wrap{margin-top:18px;padding-top:18px;border-top:1px solid var(--c-line)}
.bar-row{margin-bottom:14px}
.bar-row:last-child{margin-bottom:0}
.bar-top{display:flex;justify-content:space-between;font-size:13px;color:var(--c-text-2);margin-bottom:6px}
.bar-top strong{color:var(--c-primary);font-variant-numeric:tabular-nums}
.bar-track{height:8px;border-radius:999px;background:#EAEDF1;overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:var(--c-primary);transition:width .4s ease}
.bar-fill.is-accent{background:var(--c-accent)}

/* ===== posts ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.post-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CBD6E4}
.post-body{padding:22px 20px;display:flex;flex-direction:column;flex:1}
.badge{display:inline-block;align-self:flex-start;font-size:13px;line-height:1.7;padding:1px 10px;border-radius:999px;background:rgba(38,67,107,.1);color:var(--c-primary);font-weight:600}
.post-body h3{font-size:17px;line-height:1.55;font-weight:700;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a{color:var(--c-text)}
.post-body h3 a:hover{color:var(--c-primary)}
.post-body p{font-size:14px;line-height:1.7;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-text-3)}
.post-meta .link-arrow{font-size:13px}
.empty-state{
  border:1px dashed #C9D2DE;border-radius:var(--r-card);background:#fff;
  padding:48px 24px;text-align:center;box-shadow:none;
}
.empty-state .empty-ico{width:32px;height:32px;color:var(--c-text-3);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:18px}

/* ===== faq ===== */
.faq{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card)}
.faq-item{position:relative}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-item.open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-accent);border-radius:3px 0 0 3px}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;min-height:64px;padding:12px 24px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);transition:background .18s ease;
}
.faq-q:hover{background:var(--c-primary-50)}
.faq-q:active{background:#E3EAF3}
.faq-idx{font-size:12px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums}
.faq-text{flex:1}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;transition:transform .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-text-2);border-radius:2px}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px}
.faq-icon::after{top:9px;left:2px;height:2px;width:16px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 24px 20px 60px;font-size:15px;line-height:1.85;color:var(--c-text-2)}
.faq-item:not(.open) .faq-a{display:none}

/* ===== cta form ===== */
.cta-panel{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:40px;display:grid;grid-template-columns:1fr 1.05fr;gap:40px;
}
.cta-left h2{font-size:26px;line-height:1.4;font-weight:700;margin-bottom:12px}
.cta-left > p{font-size:15px;color:var(--c-text-2);margin-bottom:22px}
.trust-points li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:14px;color:var(--c-text-2)}
.trust-points .tp-ico{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--c-primary-50);color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;margin-top:2px}
.trust-points strong{display:block;font-size:15px;color:var(--c-text);font-weight:600}
.cta-thumb{margin-top:22px;border-radius:12px;overflow:hidden;border:1px solid rgba(27,36,48,.06);aspect-ratio:16/9}
.cta-thumb img{width:100%;height:100%;object-fit:cover}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px}
.form-two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-text-2);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  font-size:15px;font-family:inherit;color:var(--c-text);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#CBD6E4}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-50)}
.field input:invalid:not(:placeholder-shown){border-color:var(--c-error)}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--c-text-2);line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--c-primary)}
.form-tip{display:none;margin-top:4px;font-size:13px;color:var(--c-ok);background:rgba(78,122,106,.1);border-radius:8px;padding:10px 14px}

/* ===== footer ===== */
.site-footer{background:#F2F3F0;border-top:1px solid var(--c-line);padding:56px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{font-size:16px;font-weight:700;color:var(--c-primary);margin-bottom:10px}
.footer-brand-sub{font-size:13px;line-height:1.85;color:var(--c-text-2);max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-text);margin-bottom:12px}
.footer-col a{display:block;font-size:13px;color:var(--c-text-2);padding:5px 0}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:13px;color:var(--c-text-2);line-height:1.9}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--c-line);padding:18px 0 22px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ===== responsive ===== */
@media (max-width:1439px){
  .wrap{padding:0 32px}
}
@media (max-width:1199px){
  .hero h1{font-size:34px}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:32px}
}
@media (max-width:1023px){
  .metric-card .metric-num{font-size:34px}
  .post-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-row > .cell + .cell{margin-top:32px}
  .hero-media{padding-bottom:0}
  .hero-float{position:static;margin-top:14px;left:auto;bottom:auto}
}
@media (max-width:959px){
  .side-nav{transform:translateX(-100%);transition:transform .26s ease,box-shadow .26s ease;width:84vw;max-width:320px;box-shadow:none}
  .side-nav.open{transform:translateX(0);box-shadow:0 0 44px rgba(27,36,48,.22)}
  .mobile-bar{display:flex}
  .content{margin-left:0;padding-top:56px}
  .wrap{padding:0 20px}
  .hero{padding:36px 0 56px}
  .section{padding-bottom:56px}
  .section-title{font-size:24px}
  .section-head{margin-bottom:24px}
}
@media (max-width:767px){
  .matrix{grid-template-columns:1fr}
  .m1,.m2,.m3,.m4,.m5,.m6{grid-column:span 1}
  .m1{min-height:240px}
  .compare{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .cta-panel{padding:24px}
  .cta-left h2{font-size:22px}
  .form-two{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .faq-q{padding:12px 18px;font-size:15px}
  .faq-a{padding:0 18px 18px 46px;font-size:14px}
  .compare-card{padding:22px}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px}
  .hero-actions .btn{width:100%}
  .hero-actions .link-arrow{justify-content:center}
  .trust-bar li{padding:0 12px;font-size:11px}
  .metric-card{padding:20px 16px}
  .metric-card .metric-num{font-size:30px}
  .btn{width:100%}
  .section-head .btn,.section-head .link-arrow{width:auto}
}

/* roulang page: article */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-ok:#4E7A6A;
  --r-card:12px;
  --r-btn:8px;
  --sh-card:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --sh-hover:0 12px 32px rgba(27,36,48,.10);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:96px;
  --nav-w:248px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;
  font-family:var(--font-cn);
  font-size:16px;line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-d);}
img{max-width:100%;display:block;border:1px solid rgba(27,36,48,.06);border-radius:var(--r-card);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-primary);font-weight:700;line-height:1.3;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  padding:var(--sp-4) var(--sp-2) var(--sp-3);
  z-index:60;
}
.sidebar-brand{display:block;padding:0 var(--sp-2) var(--sp-4);border-bottom:1px solid var(--c-line);}
.sidebar-brand .logo-text{display:block;font-size:17px;font-weight:700;color:var(--c-primary);letter-spacing:.01em;line-height:1.4;}
.sidebar-brand .logo-sub{display:block;margin-top:6px;font-size:12px;color:var(--c-text-3);letter-spacing:.02em;}
.sidebar-nav{flex:1 1 auto;overflow-y:auto;padding:var(--sp-4) 0 0;}
.nav-group-title{font-size:11px;letter-spacing:.08em;color:var(--c-text-3);padding:0 var(--sp-2) var(--sp-2);text-transform:uppercase;}
.nav-list li{margin-bottom:2px;}
.nav-list a{
  display:flex;align-items:center;height:44px;padding:0 var(--sp-2);
  font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;
  border-radius:0 var(--r-btn) var(--r-btn) 0;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-list a:hover{background:var(--c-primary-50);color:var(--c-primary);}
.nav-list a:active{background:#E3EAF4;}
.nav-list a.active{background:var(--c-primary-50);border-left-color:var(--c-accent);color:var(--c-primary);font-weight:700;}
.sidebar-foot{border-top:1px solid var(--c-line);padding:var(--sp-3) var(--sp-2) 0;margin-top:var(--sp-3);}
.sidebar-foot .btn{width:100%;}
.sidebar-contact{font-size:12px;line-height:1.9;color:var(--c-text-3);margin-top:var(--sp-3);}
.sidebar-contact span{display:block;}
.sidebar-legal{font-size:12px;color:var(--c-text-3);margin-top:var(--sp-2);padding-top:var(--sp-2);border-top:1px dashed var(--c-line);}

.mobile-topbar{display:none;}
.drawer-mask{display:none;}

.content{margin-left:var(--nav-w);padding:40px var(--sp-5) 0;min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1200px;margin:0 auto;}
.content-main{flex:1 0 auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:inset 0 -2px 0 rgba(180,81,58,0);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-accent);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);background:none;border:0;padding:0;min-height:0;cursor:pointer;}
.btn-link .arw{transition:transform .18s ease;}
.btn-link:hover .arw{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--c-text-3);display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:var(--sp-4);}
.crumb a{color:var(--c-text-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:var(--c-line);}
.crumb .cur{color:var(--c-primary);font-weight:700;}

/* ---------- 文章头 ---------- */
.article-head{max-width:860px;}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  font-size:13px;font-weight:600;border-radius:999px;
  background:rgba(38,67,107,.10);color:var(--c-primary);
}
.badge-accent{background:rgba(180,81,58,.10);color:var(--c-accent);}
.article-head h1{
  font-size:40px;line-height:1.25;letter-spacing:-.01em;
  margin:var(--sp-3) 0 var(--sp-3);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--c-text-2);
}
.article-meta .divider{width:1px;height:12px;background:var(--c-line);display:inline-block;}
.article-lead{
  margin-top:var(--sp-4);padding:var(--sp-3) var(--sp-4);
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-card) var(--r-card) 0;
  font-size:15px;color:var(--c-text-2);
}

/* ---------- 文章主栅格 ---------- */
.article-grid{margin-top:var(--sp-5);}
.article-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:var(--sp-5) var(--sp-4);
}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--c-text);}
.article-body>*+*{margin-top:1.2em;}
.article-body h2{
  font-size:24px;margin-top:1.9em;padding-left:12px;
  border-left:3px solid var(--c-accent);line-height:1.4;
}
.article-body h3{font-size:19px;margin-top:1.6em;color:var(--c-primary-d);}
.article-body h4{font-size:16px;margin-top:1.4em;}
.article-body p{margin:1.2em 0 0;}
.article-body ul,.article-body ol{margin:1.2em 0 0;padding-left:22px;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.5em 0;}
.article-body blockquote{
  margin:1.5em 0;padding:var(--sp-3) var(--sp-4);
  background:var(--c-primary-50);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;color:var(--c-primary-d);
}
.article-body a{text-decoration:underline;text-underline-offset:3px;}
.article-body img{margin:1.5em 0;border-radius:var(--r-card);}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:14px;}
.article-body th{background:var(--c-primary-50);color:var(--c-primary);text-align:left;padding:12px 14px;border-bottom:1px solid var(--c-line);}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);color:var(--c-text-2);}
.article-body code{background:var(--c-primary-50);padding:2px 6px;border-radius:4px;font-size:14px;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:32px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:var(--sp-4);margin-bottom:var(--sp-3);
}
.side-card h3{font-size:15px;letter-spacing:.02em;margin-bottom:var(--sp-3);display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;background:var(--c-accent);border-radius:2px;display:inline-block;}
.toc-list li{margin:0;}
.toc-list a{
  display:block;padding:8px 10px;font-size:14px;color:var(--c-text-2);
  border-left:2px solid var(--c-line);line-height:1.5;
  transition:all .18s ease;
}
.toc-list a:hover{background:var(--c-primary-50);color:var(--c-primary);border-left-color:var(--c-primary);}
.toc-list a.is-current{color:var(--c-primary);font-weight:700;border-left-color:var(--c-accent);background:var(--c-primary-50);}
.toc-empty{font-size:13px;color:var(--c-text-3);}
.rel-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--c-line);}
.rel-item:last-child{border-bottom:0;padding-bottom:0;}
.rel-item .rel-no{
  flex:0 0 22px;font-size:13px;font-weight:700;color:var(--c-accent);
  font-variant-numeric:tabular-nums;line-height:1.6;
}
.rel-item a{font-size:14px;line-height:1.55;color:var(--c-text);}
.rel-item a:hover{color:var(--c-primary);}
.side-cta{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.side-cta h3{color:#fff;}
.side-cta h3::before{background:#fff;}
.side-cta p{font-size:13px;color:rgba(255,255,255,.78);line-height:1.8;}
.side-cta .btn{width:100%;margin-top:var(--sp-3);background:#fff;color:var(--c-primary);}
.side-cta .btn:hover{background:var(--c-accent);color:#fff;}

/* ---------- 文末 CTA ---------- */
.end-cta{
  margin-top:var(--sp-5);
  background:var(--c-primary-50);
  border:1px solid #DCE4EF;border-radius:var(--r-card);
  padding:var(--sp-4) var(--sp-5);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--sp-3);
}
.end-cta h3{font-size:19px;margin-bottom:6px;}
.end-cta p{font-size:14px;color:var(--c-text-2);}
.back-cat{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--c-text-2);margin-top:var(--sp-3);}
.back-cat:hover{color:var(--c-primary);}

/* ---------- 相关推荐 ---------- */
.rel-section{margin-top:var(--sp-6);padding-bottom:var(--sp-6);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-3);margin-bottom:var(--sp-4);}
.section-head h2{font-size:26px;}
.section-head .sub{font-size:14px;color:var(--c-text-3);margin-top:6px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-4);}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#C9D5E6;}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;border:0;border-radius:0;}
.rel-card .body{padding:var(--sp-3) var(--sp-4) var(--sp-4);display:flex;flex-direction:column;flex:1;}
.rel-card h3{font-size:16px;line-height:1.5;margin:10px 0 8px;}
.rel-card p{font-size:13px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-card .foot{margin-top:auto;padding-top:var(--sp-3);font-size:13px;color:var(--c-text-3);display:flex;align-items:center;justify-content:space-between;}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed #C9D0DA;border-radius:var(--r-card);
  background:var(--c-surface);padding:var(--sp-6) var(--sp-4);
  text-align:center;
}
.empty-state svg{width:32px;height:32px;color:var(--c-text-3);margin:0 auto var(--sp-3);}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:var(--sp-3);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#F2F3F0;border-top:1px solid var(--c-line);
  margin-top:var(--sp-6);padding:var(--sp-6) 0 var(--sp-4);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--sp-5);}
.footer-brand{font-size:17px;font-weight:700;color:var(--c-primary);}
.footer-brand-sub{font-size:13px;color:var(--c-text-2);line-height:1.9;margin-top:10px;max-width:320px;}
.footer-col h4{font-size:13px;color:var(--c-text);letter-spacing:.04em;margin-bottom:var(--sp-2);}
.footer-col a,.footer-col p{display:block;font-size:13px;color:var(--c-text-2);line-height:2;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:var(--sp-5);padding-top:var(--sp-3);
  border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .content{padding:56px 64px 0;}
}
@media (max-width:1199px){
  .article-head h1{font-size:34px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-4);}
}
@media (max-width:959px){
  .mobile-topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 var(--sp-3);
    background:var(--c-surface);border-bottom:1px solid var(--c-line);z-index:90;
  }
  .mobile-topbar .mt-brand{font-size:15px;font-weight:700;color:var(--c-primary);}
  .mt-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border:1px solid var(--c-line);border-radius:var(--r-btn);
    background:var(--c-surface);color:var(--c-primary);cursor:pointer;
  }
  .mt-toggle svg{width:20px;height:20px;}
  .sidebar{
    transform:translateX(-100%);transition:transform .24s ease;
    width:84vw;max-width:320px;z-index:100;padding-top:var(--sp-4);
  }
  .sidebar.is-open{transform:translateX(0);box-shadow:0 0 40px rgba(27,36,48,.18);}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(27,36,48,.42);z-index:95;}
  .drawer-mask.is-open{display:block;}
  .content{margin-left:0;padding:80px var(--sp-3) 0;}
  .article-head h1{font-size:30px;}
  .article-body{padding:var(--sp-4) var(--sp-3);}
  .article-side{position:static;}
  .rel-grid{grid-template-columns:1fr;}
  .end-cta{padding:var(--sp-4);}
}
@media (max-width:720px){
  .article-body h2{font-size:21px;}
  .footer-grid{grid-template-columns:1fr;gap:var(--sp-4);}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .content{padding:76px var(--sp-2) 0;}
  .article-head h1{font-size:25px;}
  .article-body{font-size:15px;}
  .article-lead{font-size:14px;padding:var(--sp-2) var(--sp-3);}
  .btn{width:100%;}
  .end-cta .btn{width:100%;}
  .side-card{padding:var(--sp-3);}
}

/* roulang page: category1 */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-success:#4E7A6A;
  --radius-card:12px;
  --radius-btn:8px;
  --shadow-card:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --shadow-hover:0 12px 32px rgba(27,36,48,.10);
  --sidebar-w:248px;
  --ease:180ms ease;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--c-primary-d);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  padding:26px 16px 20px;
  display:flex;flex-direction:column;
  z-index:60;
  overflow-y:auto;
}
.brand{display:block;padding:0 8px 22px;border-bottom:1px solid var(--c-line);margin-bottom:20px;}
.brand-name{
  display:block;font-size:17px;font-weight:700;color:var(--c-primary);
  letter-spacing:-.01em;line-height:1.4;
}
.brand-sub{display:block;font-size:12px;color:var(--c-text-3);margin-top:6px;letter-spacing:.02em;}
.nav-group-label{
  font-size:11px;color:var(--c-text-3);letter-spacing:.08em;
  padding:0 10px;margin:6px 0 8px;
}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-list li a{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 12px 0 14px;
  font-size:14px;color:var(--c-text-2);
  border-radius:6px;
}
.nav-list li a::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:2px;background:transparent;transition:background var(--ease);
}
.nav-list li a:hover{background:#F5F7FA;color:var(--c-primary);}
.nav-list li a.active{
  background:var(--c-primary-50);color:var(--c-primary);font-weight:600;
}
.nav-list li a.active::before{background:var(--c-accent);}
.side-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--c-line);}
.side-cta{
  display:flex;align-items:center;justify-content:center;
  height:44px;border-radius:var(--radius-btn);
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:600;
  transition:background var(--ease),box-shadow var(--ease);
}
.side-cta:hover{background:var(--c-primary-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-accent);}
.side-contact{font-size:12px;color:var(--c-text-3);line-height:1.9;margin-top:14px;}
.side-contact strong{display:block;color:var(--c-text-2);font-weight:600;font-size:12px;}
.side-record{font-size:12px;color:var(--c-text-3);margin-top:12px;}

/* ---------- 移动顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;
  padding:0 14px;z-index:70;
}
.topbar-brand{font-size:15px;font-weight:700;color:var(--c-primary);}
.hamburger{
  width:44px;height:44px;border:1px solid var(--c-line);border-radius:8px;
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--c-primary);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
body.drawer-open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.drawer-open .hamburger span:nth-child(2){opacity:0;}
body.drawer-open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(27,36,48,.45);z-index:55;
}
body.drawer-open .overlay{display:block;}

/* ---------- 主内容区 ---------- */
.main-wrap{margin-left:var(--sidebar-w);}
.page-wrap{max-width:1200px;margin:0 auto;padding:40px 32px 96px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb .current{color:var(--c-primary);font-weight:600;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  border:1px solid var(--c-line);
  border-radius:16px;
  padding:44px 40px 36px;
  background:
    linear-gradient(96deg,#FFFFFF 0%,#FFFFFF 52%,rgba(255,255,255,.72) 78%,rgba(247,246,243,.55) 100%),
    url('/assets/images/backpic/back-1.png') right center / cover no-repeat;
  overflow:hidden;
  margin-bottom:56px;
}
.page-head h1{
  font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.02em;
  color:var(--c-primary);max-width:760px;
}
.page-head h1 .hl{color:var(--c-accent);}
.page-lead{
  margin-top:16px;font-size:16px;color:var(--c-text-2);max-width:620px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 14px;border-radius:999px;
  background:var(--c-surface);border:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-2);
  transition:border-color var(--ease),color var(--ease),background var(--ease),transform var(--ease);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50);transform:translateY(-1px);}
.tag .dot{width:5px;height:5px;border-radius:50%;background:var(--c-accent);}

/* ---------- 板块通用 ---------- */
.section{margin-bottom:96px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-title{
  position:relative;padding-left:16px;
  font-size:30px;line-height:1.32;font-weight:700;color:var(--c-text);letter-spacing:-.02em;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-accent);
}
.section-note{font-size:14px;color:var(--c-text-3);max-width:420px;text-align:right;}
.eyebrow{
  font-size:12px;letter-spacing:.08em;color:var(--c-accent);font-weight:700;margin-bottom:10px;
}

/* ---------- 步骤区 ---------- */
.steps-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:44px;align-items:start;}
.toc{
  position:sticky;top:32px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px 16px;box-shadow:var(--shadow-card);
}
.toc-label{font-size:11px;letter-spacing:.08em;color:var(--c-text-3);padding:0 8px;margin-bottom:10px;}
.toc ol{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:8px 10px;border-radius:8px;
  font-size:14px;color:var(--c-text-2);
}
.toc a .idx{
  font-size:12px;font-weight:700;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;min-width:18px;
}
.toc a:hover{background:#F5F7FA;color:var(--c-primary);}
.toc a:hover .idx{color:var(--c-accent);}
.toc-foot{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--c-line);
  font-size:12px;color:var(--c-text-3);line-height:1.8;
}

.steps{position:relative;display:flex;flex-direction:column;gap:20px;}
.steps::before{
  content:"";position:absolute;left:39px;top:34px;bottom:34px;width:2px;
  background:repeating-linear-gradient(to bottom,var(--c-line) 0 6px,transparent 6px 12px);
}
.step-item{
  position:relative;z-index:1;
  display:grid;grid-template-columns:56px minmax(0,1fr) 28px;gap:18px;align-items:start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
  scroll-margin-top:88px;
}
.step-item:hover{box-shadow:var(--shadow-hover);border-color:#CFD8E6;transform:translateY(-2px);}
.step-num{
  width:48px;height:48px;border-radius:50%;
  border:1px solid #D3DCEA;background:var(--c-primary-50);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.step-body h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--c-text);}
.step-body p{margin-top:10px;font-size:15px;color:var(--c-text-2);line-height:1.8;}
.step-meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;
}
.mini-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:var(--c-primary-50);color:var(--c-primary);font-size:12px;font-weight:600;
}
.step-arrow{
  width:28px;height:28px;border-radius:50%;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
  transition:transform var(--ease),background var(--ease),border-color var(--ease);
}
.step-item:hover .step-arrow{transform:translateX(4px);background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.step-arrow svg{width:14px;height:14px;}

/* ---------- 核对清单 ---------- */
.check-panel{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:40px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
  padding:36px;box-shadow:var(--shadow-card);
}
.check-panel h2{font-size:26px;line-height:1.4;color:var(--c-text);font-weight:700;letter-spacing:-.01em;}
.check-panel .panel-lead{margin-top:12px;font-size:15px;color:var(--c-text-2);}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:12px;font-size:15px;color:var(--c-text-2);line-height:1.75;}
.check-list .tick{
  width:22px;height:22px;border-radius:50%;background:rgba(78,122,106,.12);
  color:var(--c-success);display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.check-list .tick svg{width:12px;height:12px;}
.check-list strong{color:var(--c-text);font-weight:600;}
.check-figure{margin:0;}
.check-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;
  border:1px solid rgba(27,36,48,.06);
}
.check-figure figcaption{font-size:13px;color:var(--c-text-3);margin-top:12px;}

/* ---------- 提示卡 ---------- */
.hint-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.hint-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.hint-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFD8E6;}
.hint-card .hint-k{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-accent);
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.hint-card h3{font-size:18px;font-weight:700;color:var(--c-text);line-height:1.5;}
.hint-card p{margin-top:10px;font-size:14px;color:var(--c-text-2);line-height:1.8;}
.hint-card .hint-line{margin-top:18px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-3);}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
  padding:36px 40px;box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:24px;font-weight:700;color:var(--c-primary);line-height:1.4;}
.cta-band p{margin-top:8px;font-size:15px;color:var(--c-text-2);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border:0;cursor:pointer;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);
  transition:background var(--ease),box-shadow var(--ease),transform var(--ease);
  white-space:nowrap;
}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-accent);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  background:#fff;border:1px solid var(--c-primary);color:var(--c-primary);
  font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  transition:background var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);box-shadow:inset 0 -2px 0 rgba(180,81,58,.35);}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.text-link svg{width:14px;height:14px;transition:transform var(--ease);}
.text-link:hover svg{transform:translateX(4px);}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.rel-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.rel-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFD8E6;}
.rel-card .rel-k{font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.rel-card h3{margin-top:10px;font-size:16px;font-weight:700;color:var(--c-primary);line-height:1.5;}
.rel-card p{margin-top:8px;font-size:13px;color:var(--c-text-2);line-height:1.7;}
.rel-card .rel-more{margin-top:14px;font-size:13px;color:var(--c-accent);font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#F2F3F0;border-top:1px solid var(--c-line);
  padding:56px 0 28px;
}
.site-footer .wrap{max-width:1200px;margin:0 auto;padding:0 32px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{font-size:16px;font-weight:700;color:var(--c-primary);}
.footer-brand-sub{margin-top:12px;font-size:13px;color:var(--c-text-2);line-height:1.9;max-width:320px;}
.footer-col h4{font-size:13px;font-weight:700;color:var(--c-text);margin-bottom:14px;letter-spacing:.02em;}
.footer-col a,.footer-col p{display:block;font-size:13px;color:var(--c-text-2);line-height:2;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page-wrap{padding:36px 24px 80px;}
  .page-head h1{font-size:34px;}
  .steps-layout{grid-template-columns:200px minmax(0,1fr);gap:28px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:959.98px){
  .topbar{display:flex;}
  .overlay{display:none;}
  .side-nav{
    width:84vw;max-width:320px;
    transform:translateX(-102%);
    transition:transform 240ms ease;
    z-index:80;
    padding-top:22px;
  }
  body.drawer-open .side-nav{transform:translateX(0);}
  body.drawer-open{overflow:hidden;}
  .main-wrap{margin-left:0;padding-top:56px;}
  .page-head{padding:32px 22px 28px;}
  .page-head h1{font-size:30px;}
  .section{margin-bottom:56px;}
  .steps-layout{grid-template-columns:minmax(0,1fr);gap:24px;}
  .toc{position:static;}
  .toc ol{flex-direction:row;flex-wrap:wrap;}
  .toc a{min-height:40px;padding:6px 10px;background:#F7F8FA;}
  .toc-foot{display:none;}
  .steps::before{display:none;}
  .check-panel{grid-template-columns:minmax(0,1fr);padding:26px;gap:26px;}
  .hint-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px;}
}
@media (max-width:719.98px){
  .page-head h1{font-size:26px;}
  .section-title{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-note{text-align:left;}
  .step-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px;}
  .step-num{width:40px;height:40px;font-size:14px;}
  .step-arrow{display:none;}
  .hint-grid{grid-template-columns:minmax(0,1fr);}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .check-panel h2{font-size:22px;}
  .site-footer .wrap{padding:0 20px;}
}
@media (max-width:519.98px){
  .page-wrap{padding:24px 16px 56px;}
  .page-head{padding:26px 16px 24px;}
  .page-head h1{font-size:23px;line-height:1.35;}
  .page-lead{font-size:15px;}
  .section{margin-bottom:48px;}
  .section-title{font-size:21px;}
  .cta-band{padding:22px;}
  .btn-primary{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-success:#4E7A6A;
  --r-card:12px;
  --r-btn:8px;
  --sh-1:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --sh-2:0 12px 32px rgba(27,36,48,.10);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-text);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-accent)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;color:var(--c-primary-d);font-weight:700;line-height:1.3}
h1{font-size:40px;letter-spacing:-.01em}
h2{font-size:30px;letter-spacing:-.01em}
h3{font-size:20px}
h4{font-size:16px}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;
}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:50;
}
.sidebar-head{padding:26px 20px 18px}
.brand{display:block}
.brand-name{
  display:block;font-size:17px;font-weight:700;color:var(--c-primary-d);
  letter-spacing:.01em;line-height:1.35;
}
.brand:hover .brand-name{color:var(--c-primary)}
.brand-sub{display:block;margin-top:6px;font-size:12px;color:var(--c-text-3);letter-spacing:.02em}
.sidebar-nav{flex:1 1 auto;overflow-y:auto;padding-bottom:16px}
.nav-group-label{
  padding:8px 20px 10px;font-size:11px;letter-spacing:.14em;
  color:var(--c-text-3);font-weight:600;
}
.nav-list{list-style:none;margin:0;padding:0}
.nav-list a{
  display:flex;align-items:center;min-height:44px;padding:0 20px;
  font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-list a:hover{background:var(--c-primary-50);color:var(--c-primary)}
.nav-list a.active{
  border-left-color:var(--c-accent);background:var(--c-primary-50);
  color:var(--c-primary);font-weight:700;
}
.sidebar-foot{
  padding:16px 20px 22px;border-top:1px solid var(--c-line);
}
.side-contact{font-size:12px;color:var(--c-text-3);line-height:1.9}
.side-copy{font-size:12px;color:var(--c-text-3);margin-top:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{
  background:var(--c-primary);color:#fff;
  box-shadow:inset 0 -1px 0 rgba(0,0,0,.08);
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--c-primary-d);color:#fff;
  box-shadow:inset 0 -2px 0 var(--c-accent);
}
.btn-primary:active{background:var(--c-primary-d);box-shadow:inset 0 2px 6px rgba(0,0,0,.22)}
.btn-ghost{
  background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);
}
.btn-ghost:hover,.btn-ghost:focus{background:var(--c-primary-50);color:var(--c-primary)}
.btn-ghost:active{background:var(--c-primary-50);box-shadow:inset 0 2px 6px rgba(27,36,48,.12)}
.btn-block{display:flex;width:100%}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;z-index:70;
}
.topbar-brand{font-size:15px;font-weight:700;color:var(--c-primary-d);letter-spacing:.01em}
.menu-btn{
  width:44px;height:44px;display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
  background:transparent;border:0;border-radius:8px;cursor:pointer;
}
.menu-btn span{display:block;width:20px;height:2px;background:var(--c-primary);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(27,36,48,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:55;
}

/* ---------- 主内容 ---------- */
.main{margin-left:var(--sidebar-w);min-height:100vh}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.main-inner{padding:30px 0 0}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);padding:2px 0 0}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-text-3)}
.breadcrumb .cur{color:var(--c-primary);font-weight:700}

/* ---------- 页头 ---------- */
.page-head{padding:26px 0 8px}
.kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--c-accent);padding:5px 12px;border-radius:999px;
  background:rgba(180,81,58,.09);margin-bottom:16px;
}
.page-head h1{margin-bottom:14px}
.lede{font-size:16px;color:var(--c-text-2);max-width:40em}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;min-height:34px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:var(--c-surface);
  font-size:13px;color:var(--c-text-2);transition:all .18s ease;
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50)}
.head-figure{
  margin:0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(27,36,48,.06);box-shadow:var(--sh-1);background:var(--c-surface);
}
.head-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}

/* ---------- 板块通用 ---------- */
.section{padding:56px 0 0}
.section-head{margin-bottom:28px;max-width:56em}
.section-head h2{position:relative;padding-left:16px;margin-bottom:10px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  background:var(--c-accent);border-radius:2px;
}
.section-sub{font-size:14px;color:var(--c-text-2)}

/* ---------- 指标卡 ---------- */
.metric-grid{margin-bottom:-24px}
.metric-grid > .cell{margin-bottom:24px}
.metric-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 20px;box-shadow:var(--sh-1);height:100%;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.metric-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#CBD5E3}
.metric-badge{
  display:inline-block;font-size:12px;font-weight:600;padding:2px 10px;border-radius:999px;
  background:rgba(78,122,106,.12);color:var(--c-success);margin-bottom:14px;
}
.metric-badge.warm{background:rgba(180,81,58,.12);color:var(--c-accent)}
.metric-num{
  font-size:40px;font-weight:700;line-height:1.1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--c-primary);
}
.metric-num.accent{color:var(--c-accent)}
.metric-unit{font-size:14px;font-weight:600;color:var(--c-text-2);margin-left:4px}
.metric-label{margin-top:10px;font-size:13px;color:var(--c-text-2);line-height:1.6}

/* ---------- 数据表 ---------- */
.table-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.data-table{width:100%;border-collapse:collapse;margin:0;font-size:14px;min-width:660px}
.data-table thead th{
  background:var(--c-primary-50);color:var(--c-primary-d);
  font-size:13px;font-weight:700;text-align:left;letter-spacing:.02em;
  padding:0 18px;height:44px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.data-table tbody td{
  padding:0 18px;height:48px;border-bottom:1px solid var(--c-line);
  color:var(--c-text-2);vertical-align:middle;
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr:nth-child(even){background:#FAFAF8}
.data-table tbody tr:hover{background:var(--c-primary-50)}
.data-table td:first-child{color:var(--c-text);font-weight:600;white-space:nowrap}
.data-table td:last-child{color:var(--c-text-3);font-size:13px}
.table-note{padding:14px 18px;border-top:1px solid var(--c-line);background:#FCFCFA;font-size:13px;color:var(--c-text-3)}

/* ---------- 小结卡 ---------- */
.note-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-1);height:100%;
  display:flex;flex-direction:column;
}
.note-card h3{font-size:18px;margin-bottom:6px}
.note-card .note-sub{font-size:13px;color:var(--c-text-3);margin-bottom:18px}
.note-list{display:flex;flex-direction:column;gap:16px;margin-bottom:22px}
.note-item{display:flex;gap:12px;font-size:14px;color:var(--c-text-2);line-height:1.7}
.note-item .dot{
  flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--c-accent);margin-top:9px;
}
.note-item strong{display:block;color:var(--c-text);font-weight:700;font-size:14px;margin-bottom:2px}
.note-card .btn{margin-top:auto}

/* ---------- 步骤流程 ---------- */
.step-grid{margin-bottom:-24px}
.step-grid > .cell{margin-bottom:24px}
.step-card{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px 22px 22px;box-shadow:var(--sh-1);height:100%;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.step-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-primary)}
.step-idx{
  font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--c-accent);
  font-variant-numeric:tabular-nums;display:block;margin-bottom:12px;
}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--c-text-2);line-height:1.75}

/* ---------- FAQ ---------- */
.faq{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;min-height:64px;
  padding:12px 22px;background:transparent;border:0;border-left:3px solid transparent;
  text-align:left;cursor:pointer;font-size:16px;font-weight:600;color:var(--c-text);
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.faq-q:hover{background:#FAFAF8;color:var(--c-primary)}
.faq-item.is-open .faq-q{border-left-color:var(--c-accent);color:var(--c-primary);background:var(--c-primary-50)}
.faq-idx{
  font-size:13px;font-weight:700;color:var(--c-accent);
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.faq-text{flex:1 1 auto;line-height:1.5}
.faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{display:none;padding:0 22px 22px 51px;font-size:15px;color:var(--c-text-2);line-height:1.85}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:56px;background:var(--c-primary-50);border:1px solid #DCE4EF;
  border-radius:var(--r-card);padding:38px 32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band h2{font-size:24px;margin-bottom:6px}
.cta-band p{font-size:14px;color:var(--c-text-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 相关分类 ---------- */
.related{padding:44px 0 0}
.related h2{font-size:20px;margin-bottom:18px}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.related-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:60px;padding:14px 18px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  font-size:14px;font-weight:600;color:var(--c-text);
  transition:all .18s ease;
}
.related-link .arrow{color:var(--c-text-3);transition:transform .18s ease,color .18s ease}
.related-link:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1);transform:translateY(-2px)}
.related-link:hover .arrow{transform:translateX(4px);color:var(--c-accent)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;background:#F2F3F0;border-top:1px solid var(--c-line);
  padding:52px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{font-size:17px;font-weight:700;color:var(--c-primary-d);margin-bottom:10px}
.footer-brand-sub{font-size:13px;color:var(--c-text-2);line-height:1.8;max-width:30em}
.footer-col h4{font-size:14px;color:var(--c-text);margin-bottom:12px}
.footer-col a,.footer-col p{display:block;font-size:13px;color:var(--c-text-2);line-height:1.9}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .wrap{padding:0 48px}
}
@media (max-width:1100px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:959px){
  .topbar{display:flex}
  .drawer-mask{display:block}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .sidebar{
    width:84vw;max-width:340px;transform:translateX(-100%);
    transition:transform .25s ease;z-index:60;box-shadow:var(--sh-2);
  }
  .sidebar.is-open{transform:translateX(0)}
  .main{margin-left:0;padding-top:56px}
  .wrap{padding:0 20px}
  h1{font-size:32px}
  h2{font-size:24px}
  .section{padding:44px 0 0}
  .cta-band{padding:28px 22px;margin-top:44px}
  .head-figure{margin-top:8px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:719px){
  .metric-grid > .cell{margin-bottom:20px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .data-table{min-width:560px}
}
@media (max-width:479px){
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:17px}
  .wrap{padding:0 16px}
  .section{padding:36px 0 0}
  .metric-num{font-size:32px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-q{padding:12px 16px;font-size:15px}
  .faq-a{padding:0 16px 20px 47px;font-size:14px}
  .breadcrumb{font-size:12px}
}

/* roulang page: category3 */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-success:#4E7A6A;
  --r-card:12px;
  --r-btn:8px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --sh-hover:0 12px 32px rgba(27,36,48,.10);
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-d)}
img{display:block;max-width:100%;height:auto}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0 0 1em}
h1,h2,h3,h4{color:var(--c-text);font-family:inherit;font-weight:700;margin:0;line-height:1.35;letter-spacing:-.01em}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}

/* ---------- 布局骨架 ---------- */
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.main-area{flex:1 0 auto}

/* ---------- 左侧竖向导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  z-index:60;padding:24px 0 20px;
  overflow-y:auto;
}
.brand{padding:0 24px 22px;border-bottom:1px solid var(--c-line)}
.brand-mark{display:block;font-size:18px;font-weight:700;color:var(--c-primary);line-height:1.4;letter-spacing:.01em}
.brand-mark:hover{color:var(--c-primary-d)}
.brand-sub{font-size:12px;color:var(--c-text-3);margin-top:6px;letter-spacing:.02em}
.nav-group-label{font-size:11px;color:var(--c-text-3);letter-spacing:.08em;padding:20px 24px 8px}
.nav-list{margin:0;padding:0}
.nav-list li a{
  display:flex;align-items:center;min-height:44px;
  padding:0 24px;font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-list li a:hover{background:#F4F6FA;color:var(--c-primary)}
.nav-list li a:active{background:var(--c-primary-50)}
.nav-list li a.active{
  border-left-color:var(--c-accent);
  background:var(--c-primary-50);
  color:var(--c-primary);
  font-weight:700;
}
.sidebar-foot{margin-top:auto;padding:22px 24px 0;border-top:1px solid var(--c-line)}
.foot-line{font-size:12px;color:var(--c-text-2);margin:0 0 6px;line-height:1.6}
.foot-note{font-size:11px;color:var(--c-text-3);margin:12px 0 0;line-height:1.6}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;font-size:15px;font-weight:600;
  border-radius:var(--r-btn);border:1px solid transparent;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-accent)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d)}
.btn-block{display:flex;width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.link-arrow .arw{transition:transform .18s ease;display:inline-block}
.link-arrow:hover .arw{transform:translateX(4px)}

/* ---------- 移动顶栏 ---------- */
.topbar{display:none}
.nav-mask{position:fixed;inset:0;background:rgba(27,36,48,.45);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:55}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-toggle{
  width:44px;height:44px;background:transparent;border:0;padding:0;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:8px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-primary);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle:hover{background:var(--c-primary-50)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 页头横幅 ---------- */
.hero-band{
  position:relative;border-radius:16px;overflow:hidden;
  margin-top:32px;padding:40px 44px 44px;
  color:#fff;
  background:linear-gradient(105deg,rgba(27,50,82,.95) 0%,rgba(27,50,82,.86) 52%,rgba(27,50,82,.58) 100%),
             url(/assets/images/backpic/back-1.png) center/cover no-repeat;
  border:1px solid rgba(27,36,48,.08);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72)}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff;font-weight:700}
.hero-band h1{
  font-size:clamp(26px,3.5vw,40px);
  line-height:1.26;color:#fff;margin:20px 0 14px;max-width:820px;
  letter-spacing:-.015em;
}
.page-lead{font-size:17px;line-height:1.8;color:rgba(255,255,255,.86);max-width:720px;margin:0}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.anchor-tag{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  font-size:13px;color:#fff;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.anchor-tag:hover{background:#fff;color:var(--c-primary);border-color:#fff}

/* ---------- 板块 ---------- */
.section{padding:66px 0}
.section + .section{border-top:1px solid var(--c-line)}
.section-head{margin-bottom:34px;max-width:760px}
.section-title{
  position:relative;padding-left:16px;font-size:clamp(22px,2.4vw,30px);line-height:1.32;margin:0 0 12px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:24px;
  background:var(--c-accent);border-radius:2px;
}
.section-desc{font-size:15px;color:var(--c-text-2);margin:0}

/* ---------- 指标条 ---------- */
.grid-padding-x{margin-left:-9px;margin-right:-9px}
.grid-padding-x > .cell{padding-left:9px;padding-right:9px}
.metric-row{margin-bottom:-18px}
.metric{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 20px;box-shadow:var(--sh-card);margin-bottom:18px;height:calc(100% - 18px);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.metric:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#CFD9E6}
.metric-num{
  font-size:40px;line-height:1.1;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric-num span{font-size:14px;font-weight:600;color:var(--c-text-3);margin-left:4px;letter-spacing:0}
.metric:nth-child(2) .metric-num,
.metric-row .cell:nth-child(2) .metric-num{color:var(--c-accent)}
.metric-label{font-size:13px;color:var(--c-text-2);margin-top:8px;font-weight:600}
.metric-note{font-size:13px;color:var(--c-text-3);margin:6px 0 0;line-height:1.65}

/* ---------- Z 字图文段 ---------- */
.zrow{
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  padding:44px 0;
}
.zrow + .zrow{border-top:1px solid var(--c-line)}
.zmedia img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid rgba(27,36,48,.06);
}
.zbody h3{font-size:20px;margin:0 0 12px}
.zbody .ztext{font-size:15px;color:var(--c-text-2);margin:0 0 18px}
.tick li{
  position:relative;padding-left:26px;margin-bottom:11px;
  font-size:15px;color:var(--c-text-2);line-height:1.7;
}
.tick li::before{
  content:"";position:absolute;left:1px;top:9px;width:11px;height:6px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  transform:rotate(-45deg);
}
.tick li:last-child{margin-bottom:0}
.zbody .link-arrow{margin-top:20px}
.zrow.is-reverse .zmedia{order:2}

/* ---------- 服务时效卡 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 20px;box-shadow:var(--sh-card);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.svc-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#CFD9E6}
.svc-idx{font-size:12px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.svc-card h3{font-size:16px;margin:8px 0 8px}
.svc-time{display:inline-block;font-size:13px;font-weight:700;color:var(--c-primary);background:var(--c-primary-50);border-radius:6px;padding:3px 10px;margin-bottom:10px}
.svc-card p{font-size:13.5px;color:var(--c-text-2);margin:0;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  min-height:64px;padding:14px 22px;background:transparent;border:0;border-left:3px solid transparent;
  text-align:left;font-size:16px;font-weight:600;color:var(--c-text);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.faq-q:hover{background:#FAFBFC;color:var(--c-primary)}
.faq-q .faq-idx{font-size:12px;font-weight:700;color:var(--c-text-3);font-variant-numeric:tabular-nums;min-width:20px}
.faq-q .faq-ic{
  position:relative;margin-left:auto;width:16px;height:16px;flex:0 0 16px;
  transition:transform .22s ease;
}
.faq-q .faq-ic::before,
.faq-q .faq-ic::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-q .faq-ic::before{width:14px;height:2px}
.faq-q .faq-ic::after{width:2px;height:14px}
.faq-item.is-open .faq-q{border-left-color:var(--c-accent);background:var(--c-primary-50);color:var(--c-primary)}
.faq-item.is-open .faq-q .faq-idx{color:var(--c-accent)}
.faq-item.is-open .faq-ic{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 20px 56px;font-size:15px;color:var(--c-text-2);line-height:1.85}
.faq-item.is-open .faq-a{max-height:340px}
.aside-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-card);
}
.aside-card h3{font-size:16px;margin:0 0 10px}
.aside-card p{font-size:13.5px;color:var(--c-text-2);margin:0 0 16px;line-height:1.75}
.aside-list li{font-size:13.5px;color:var(--c-text-2);padding:9px 0;border-top:1px dashed var(--c-line);display:flex;justify-content:space-between;gap:10px}
.aside-list li span:last-child{color:var(--c-primary);font-weight:600}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:linear-gradient(100deg,var(--c-primary) 0%,var(--c-primary-d) 100%);
  border-radius:16px;padding:40px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border:1px solid rgba(27,36,48,.1);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);color:#fff;margin:0 0 10px}
.cta-band p{margin:0;font-size:14.5px;color:rgba(255,255,255,.82);max-width:640px}
.cta-band .btn-primary{background:#fff;color:var(--c-primary)}
.cta-band .btn-primary:hover{background:var(--c-primary-50);color:var(--c-primary-d);box-shadow:inset 0 -2px 0 var(--c-accent)}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.related-card{
  display:block;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-card);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.related-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:#CFD9E6}
.related-card h3{font-size:15px;margin:0 0 6px;color:var(--c-primary)}
.related-card p{font-size:13px;color:var(--c-text-2);margin:0;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:#F2F3F0;border-top:1px solid var(--c-line);margin-top:24px;padding:56px 0 26px;flex-shrink:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-brand{font-size:17px;font-weight:700;color:var(--c-primary);margin-bottom:10px}
.footer-brand-sub{font-size:13px;color:var(--c-text-2);line-height:1.85;margin:0;max-width:330px}
.footer-col h4{font-size:14px;margin:0 0 14px;color:var(--c-text)}
.footer-col a{display:block;font-size:13px;color:var(--c-text-2);padding:5px 0}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:13px;color:var(--c-text-2);margin:0 0 8px;line-height:1.7}
.footer-bottom{
  border-top:1px solid var(--c-line);margin-top:38px;padding-top:18px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
}
@media screen and (max-width:959px){
  .page{margin-left:0}
  .sidebar{
    width:84vw;max-width:330px;
    transform:translateX(-100%);transition:transform .28s ease;
    box-shadow:0 0 0 rgba(27,36,48,0);
  }
  .sidebar.is-open{transform:translateX(0)}
  .topbar{
    display:flex;position:sticky;top:0;z-index:50;
    height:56px;align-items:center;justify-content:space-between;
    padding:0 16px;background:var(--c-surface);border-bottom:1px solid var(--c-line);
  }
  .topbar-brand{font-size:16px;font-weight:700;color:var(--c-primary);line-height:1.3}
  .wrap{padding:0 20px}
  .hero-band{margin-top:20px;padding:30px 24px 32px;border-radius:14px}
  .section{padding:46px 0}
  .zrow{grid-template-columns:1fr;gap:26px;padding:36px 0}
  .zrow.is-reverse .zmedia{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .cta-band{padding:30px 24px}
}
@media screen and (max-width:719px){
  .svc-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .metric-num{font-size:34px}
  .faq-a-inner{padding-left:22px}
}
@media screen and (max-width:519px){
  .wrap{padding:0 16px}
  h1{font-size:26px}
  .page-lead{font-size:15px}
  .section{padding:38px 0}
  .hero-band{padding:26px 18px 28px}
  .btn{width:100%}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .anchor-tag{height:34px;padding:0 13px;font-size:12.5px}
}

/* roulang page: category4 */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-success:#4E7A6A;
  --c-footer:#F2F3F0;
  --radius-card:12px;
  --radius-btn:8px;
  --shadow-card:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --shadow-hover:0 12px 32px rgba(27,36,48,.10);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px;
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.7;color:var(--c-text);background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border-radius:12px;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-accent);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;
}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
h1{font-size:40px;line-height:1.25;letter-spacing:-.02em;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:20px;line-height:1.45;}
h4{font-size:16px;line-height:1.5;}

/* ============ 布局 ============ */
.layout{min-height:100vh;}

/* 左侧竖向导航 */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;z-index:60;
}
.brand{
  display:block;padding:26px 24px 20px;border-bottom:1px solid var(--c-line);
}
.brand-name{
  display:block;font-size:17px;font-weight:700;color:var(--c-primary);
  line-height:1.35;letter-spacing:-.01em;
}
.brand-sub{
  display:block;margin-top:6px;font-size:12px;color:var(--c-text-3);letter-spacing:.04em;
}
.nav-wrap{flex:1;overflow-y:auto;padding:18px 0 8px;}
.nav-group-title{
  padding:10px 24px 8px;font-size:11px;color:var(--c-text-3);
  letter-spacing:.08em;text-transform:uppercase;font-weight:600;
}
.nav-list li{list-style:none;}
.nav-list a{
  display:flex;align-items:center;min-height:44px;
  padding:0 24px;font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-list a:hover{background:#FAFAF8;color:var(--c-primary);}
.nav-list a.active{
  background:var(--c-primary-50);color:var(--c-primary);
  border-left-color:var(--c-accent);font-weight:700;
}
.nav-list a:active{background:var(--c-primary-50);}
.sidebar-foot{
  padding:18px 24px 22px;border-top:1px solid var(--c-line);
}
.sidebar-foot .btn{width:100%;}
.sidebar-contact{margin-top:14px;font-size:12px;color:var(--c-text-3);line-height:1.9;}
.sidebar-contact span{display:block;}
.sidebar-copy{margin-top:12px;font-size:12px;color:var(--c-text-3);}

/* 移动端顶部条 */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar-brand{font-size:16px;font-weight:700;color:var(--c-primary);}
.burger{
  width:44px;height:44px;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:8px;display:inline-flex;align-items:center;justify-content:center;
  padding:0;
}
.burger span{display:block;width:18px;height:2px;background:var(--c-primary);position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-primary);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(27,36,48,.42);z-index:85;
}
.drawer-mask.show{display:block;}

/* 内容区 */
.page-main{
  margin-left:var(--sidebar-w);padding:32px 32px 0;
}
.wrap{max-width:1200px;margin:0 auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;font-size:15px;font-weight:600;
  border-radius:var(--radius-btn);border:1px solid transparent;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-accent);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);}
.btn-text{
  background:none;border:0;padding:0;min-height:auto;color:var(--c-primary);
  font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
}
.btn-text .arw{transition:transform .18s ease;}
.btn-text:hover .arw{transform:translateX(4px);}
.btn-text:hover{color:var(--c-accent);}

/* ============ 页头 ============ */
.breadcrumb{
  font-size:13px;color:var(--c-text-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  margin-bottom:20px;
}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .cur{color:var(--c-primary);font-weight:700;}

.page-head{padding:8px 0 36px;border-bottom:1px solid var(--c-line);}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-accent);font-weight:600;letter-spacing:.06em;
  margin-bottom:14px;
}
.kicker::before{content:"";width:20px;height:2px;background:var(--c-accent);border-radius:2px;}
.lede{margin-top:14px;font-size:17px;color:var(--c-text-2);max-width:760px;}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.anchor-tag{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;
  font-size:13px;color:var(--c-text-2);background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:999px;transition:all .18s ease;
}
.anchor-tag:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50);}

/* ============ 板块通用 ============ */
.section{padding:72px 0;border-bottom:1px solid var(--c-line);}
.section:last-of-type{border-bottom:0;}
.section-head{margin-bottom:36px;max-width:780px;}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  background:var(--c-accent);border-radius:2px;
}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:15px;}
.section-head .head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ============ 对照表 ============ */
.compare-table{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.compare-thead,.compare-tr{
  display:grid;grid-template-columns:1.05fr 1fr 1fr;
  align-items:center;gap:0;
}
.compare-thead{
  background:var(--c-primary-50);
  font-size:13px;font-weight:700;color:var(--c-primary);
  padding:16px 0;letter-spacing:.02em;
}
.compare-thead span{padding:0 20px;}
.compare-thead .hl{color:var(--c-accent);}
.compare-tr{
  min-height:56px;padding:14px 0;border-top:1px solid var(--c-line);
  font-size:14.5px;transition:background .18s ease;
}
.compare-tr:nth-child(even){background:#FBFAF7;}
.compare-tr:hover{background:var(--c-primary-50);}
.compare-tr span{padding:0 20px;display:flex;align-items:center;gap:8px;}
.c-key{color:var(--c-text);font-weight:600;}
.c-old{color:var(--c-text-3);}
.c-new{color:var(--c-text);font-weight:600;}
.ic{width:16px;height:16px;flex:0 0 16px;}
.ic-x{color:var(--c-text-3);}
.ic-check{color:var(--c-success);}

/* 数据条 */
.metric-box{
  margin-top:28px;display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.metric-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
}
.metric-card .m-title{font-size:14px;color:var(--c-text-2);font-weight:600;}
.metric-line{margin-top:18px;}
.metric-line .ml-head{
  display:flex;justify-content:space-between;font-size:13px;color:var(--c-text-2);margin-bottom:8px;
}
.metric-line .ml-head b{color:var(--c-primary);font-size:15px;}
.bar{height:8px;background:var(--c-primary-50);border-radius:999px;overflow:hidden;}
.bar-fill{height:100%;border-radius:999px;background:var(--c-primary);}
.bar-fill.alt{background:var(--c-accent);}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:38px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:12px;width:2px;background:var(--c-line);
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-38px;top:6px;width:20px;height:20px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-primary);
}
.tl-item:nth-child(4)::before{border-color:var(--c-accent);}
.tl-tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--c-primary);
  background:var(--c-primary-50);border-radius:999px;padding:2px 10px;margin-bottom:10px;
}
.tl-item h3{font-size:19px;margin-bottom:8px;}
.tl-item p{font-size:14.5px;color:var(--c-text-2);max-width:700px;}

/* ============ 建议卡 ============ */
.advice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.advice-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.advice-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CBD5E4;}
.advice-card .num{
  font-size:12px;font-weight:700;color:var(--c-accent);letter-spacing:.08em;margin-bottom:12px;display:block;
}
.advice-card h3{font-size:18px;margin-bottom:10px;}
.advice-card p{font-size:14px;color:var(--c-text-2);}
.advice-card ul{margin-top:14px;}
.advice-card ul li{
  position:relative;padding-left:18px;font-size:14px;color:var(--c-text-2);margin-bottom:8px;
}
.advice-card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}

/* 图文块 */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid rgba(27,36,48,.06);
  border-radius:12px;
}
.split-body h3{margin-bottom:14px;font-size:22px;}
.split-body p{color:var(--c-text-2);font-size:15px;margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--c-text);margin-bottom:10px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:8px;
  border-left:2px solid var(--c-success);border-bottom:2px solid var(--c-success);
  transform:rotate(-45deg);
}

/* ============ FAQ ============ */
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);}
.faq-item+.faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;min-height:64px;
  padding:12px 22px;background:none;border:0;border-left:3px solid transparent;
  text-align:left;font-size:16px;font-weight:600;color:var(--c-text);
  transition:background .18s ease,border-color .18s ease;
}
.faq-q:hover{background:#FAFAF8;color:var(--c-primary);}
.faq-q[aria-expanded="true"]{border-left-color:var(--c-accent);background:var(--c-primary-50);color:var(--c-primary);}
.faq-q .idx{font-size:13px;color:var(--c-accent);font-weight:700;flex:0 0 24px;}
.faq-q .plus{
  margin-left:auto;width:16px;height:16px;position:relative;flex:0 0 16px;transition:transform .2s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-q .plus::before{left:0;top:7px;width:16px;height:2px;}
.faq-q .plus::after{left:7px;top:0;width:2px;height:16px;}
.faq-q[aria-expanded="true"] .plus{transform:rotate(45deg);}
.faq-a{padding:0 22px 22px 61px;font-size:15px;color:var(--c-text-2);display:none;}
.faq-a.open{display:block;}

/* ============ CTA 条 ============ */
.cta-band{
  margin:56px 0 0;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:24px;}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--c-text-2);}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 相关分类 */
.related{padding:48px 0 24px;}
.related h2{font-size:20px;margin-bottom:18px;}
.related-links{display:flex;flex-wrap:wrap;gap:12px;}
.related-links a{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:999px;
  font-size:14px;color:var(--c-text-2);transition:all .18s ease;
}
.related-links a:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;background:var(--c-footer);border-top:1px solid var(--c-line);
  padding:48px 0 24px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-brand{font-size:16px;font-weight:700;color:var(--c-primary);}
.footer-brand-sub{margin-top:10px;font-size:13px;color:var(--c-text-2);line-height:1.8;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--c-text);margin-bottom:14px;}
.footer-col a,.footer-col p{
  display:block;font-size:13px;color:var(--c-text-2);margin-bottom:10px;line-height:1.7;
}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:36px;padding-top:18px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .page-main{padding-left:56px;padding-right:56px;}
}
@media (max-width:1200px){
  .compare-thead,.compare-tr{grid-template-columns:1fr 1fr 1.1fr;}
  .advice-grid{grid-template-columns:1fr 1fr;}
  .advice-grid .advice-card:last-child{grid-column:span 2;}
}
@media (max-width:960px){
  .sidebar{
    transform:translateX(-100%);transition:transform .24s ease;
    width:84vw;max-width:340px;box-shadow:0 0 40px rgba(27,36,48,.18);
  }
  .sidebar.open{transform:translateX(0);}
  .topbar{display:flex;}
  .page-main{margin-left:0;padding:80px 20px 0;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .section{padding:56px 0;}
  .split{grid-template-columns:1fr;gap:24px;}
  .metric-box{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .cta-band{padding:28px 24px;}
}
@media (max-width:720px){
  .compare-thead{display:none;}
  .compare-tr{
    grid-template-columns:1fr;gap:10px;padding:18px 20px;
  }
  .compare-tr span{padding:0;}
  .compare-tr .c-key{
    font-size:13px;color:var(--c-text-3);letter-spacing:.04em;
  }
  .compare-tr .c-old::before,
  .compare-tr .c-new::before{
    font-size:12px;color:var(--c-text-3);display:inline-block;margin-right:6px;
  }
  .compare-tr .c-old::before{content:"常规方式 · ";}
  .compare-tr .c-new::before{content:"本入口方式 · ";color:var(--c-accent);}
  .advice-grid{grid-template-columns:1fr;}
  .advice-grid .advice-card:last-child{grid-column:auto;}
  .faq-a{padding-left:22px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:480px){
  h1{font-size:26px;}
  h2{font-size:21px;}
  .lede{font-size:15px;}
  .section{padding:44px 0;}
  .page-main{padding-left:16px;padding-right:16px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn-text{justify-content:flex-start;width:auto;}
  .cta-band{padding:24px 18px;}
  .anchor-tag{font-size:12px;height:32px;padding:0 12px;}
}

/* roulang page: category5 */
:root{
  --c-primary:#26436B;
  --c-primary-d:#1B3252;
  --c-primary-50:#EDF1F7;
  --c-accent:#B4513A;
  --c-bg:#F7F6F3;
  --c-surface:#FFFFFF;
  --c-text:#1B2430;
  --c-text-2:#5A6472;
  --c-text-3:#8A93A0;
  --c-line:#E3E5E8;
  --c-error:#C0392B;
  --c-ok:#4E7A6A;
  --radius-card:12px;
  --radius-btn:8px;
  --shadow-card:0 1px 2px rgba(27,36,48,.05),0 8px 24px rgba(27,36,48,.06);
  --shadow-hover:0 12px 32px rgba(27,36,48,.10);
  --sidebar-w:248px;
  --font-base:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary-d);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-text);}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
::selection{background:var(--c-primary-50);color:var(--c-primary-d);}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  padding:24px 0 18px;
  z-index:70;
}
.brand{display:block;padding:0 20px 20px;border-bottom:1px solid var(--c-line);}
.brand-name{font-size:16px;font-weight:700;color:var(--c-primary);line-height:1.4;letter-spacing:.01em;}
.brand-sub{font-size:12px;color:var(--c-text-3);margin-top:5px;line-height:1.5;}
.nav-group-label{
  font-size:11px;letter-spacing:.08em;color:var(--c-text-3);
  padding:0 20px;margin:18px 0 8px;text-transform:uppercase;
}
.nav-list{display:block;}
.nav-list a{
  display:flex;align-items:center;
  min-height:44px;padding:0 20px;
  font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.nav-list a:hover{background:var(--c-primary-50);color:var(--c-primary);}
.nav-list a.active{
  border-left-color:var(--c-accent);
  background:var(--c-primary-50);
  color:var(--c-primary);font-weight:700;
}
.nav-list a:active{background:#E2E8F1;}
.sidebar-foot{margin-top:auto;padding:18px 20px 0;border-top:1px solid var(--c-line);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{
  background:var(--c-primary);color:#fff;border-color:var(--c-primary);
  box-shadow:inset 0 -2px 0 transparent;
}
.btn-primary:hover{
  background:var(--c-primary-d);color:#fff;border-color:var(--c-primary-d);
  box-shadow:inset 0 -2px 0 var(--c-accent);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--c-surface);color:var(--c-primary);border:1px solid var(--c-primary);
}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-d);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.btn-soft{
  background:var(--c-primary-50);color:var(--c-primary);border:1px solid transparent;
}
.btn-soft:hover{background:#E1E8F2;color:var(--c-primary-d);}
.sidebar-contact{font-size:12px;color:var(--c-text-3);line-height:1.7;margin-top:14px;}
.sidebar-contact span{display:block;}
.sidebar-copy{font-size:12px;color:var(--c-text-3);margin-top:10px;}

/* ============ 移动端顶部条 ============ */
.topbar{
  display:none;
  position:sticky;top:0;z-index:80;
  height:56px;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar-brand{font-size:15px;font-weight:700;color:var(--c-primary);}
.topbar-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--c-line);border-radius:10px;color:var(--c-primary);
  font-size:17px;
}
.topbar-toggle:active{background:var(--c-primary-50);}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:340px;
  background:var(--c-surface);z-index:120;
  transform:translateX(-102%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:20px 0;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer .nav-list a{min-height:48px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,36,48,.42);
  z-index:110;opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer-close{
  position:absolute;top:10px;right:12px;
  width:40px;height:40px;border:0;background:transparent;color:var(--c-text-3);font-size:18px;
}
.drawer-head{padding:0 20px 16px;border-bottom:1px solid var(--c-line);}

/* ============ 主内容 ============ */
.main-area{margin-left:var(--sidebar-w);padding:0 32px;min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1200px;margin:0 auto;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:var(--c-text-3);padding:28px 0 0;
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:var(--c-text-3);}
.breadcrumb .current{color:var(--c-primary);font-weight:700;}

/* Hero */
.page-hero{padding:26px 0 8px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-50);border-radius:999px;padding:6px 14px;
}
.eyebrow i{color:var(--c-accent);}
.page-hero h1{
  font-size:40px;line-height:1.25;letter-spacing:-.01em;
  color:var(--c-primary-d);margin:18px 0 14px;max-width:880px;
}
.page-hero .lead{font-size:16px;color:var(--c-text-2);max-width:760px;}
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.anchor-row a{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--c-text-2);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:999px;padding:7px 14px;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.anchor-row a:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50);}
.anchor-row a:active{background:#E2E8F1;}

.section{padding:56px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.section-head h2{
  font-size:30px;line-height:1.3;color:var(--c-primary-d);position:relative;padding-left:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--c-accent);
}
.section-head p{font-size:14px;color:var(--c-text-2);margin-top:8px;padding-left:14px;}

/* 搜索框 */
.faq-search{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:14px;box-shadow:var(--shadow-card);
  padding:22px 24px;margin-top:32px;
  display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center;
}
.search-field{position:relative;}
.search-field i{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--c-text-3);font-size:15px;
}
.search-field input{
  width:100%;height:48px;border-radius:var(--radius-btn);
  border:1px solid var(--c-line);background:var(--c-bg);
  padding:0 16px 0 42px;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.search-field input::placeholder{color:var(--c-text-3);}
.search-field input:focus{
  outline:none;border-color:var(--c-primary);background:var(--c-surface);
  box-shadow:0 0 0 3px var(--c-primary-50);
}
.search-hint{grid-column:1 / -1;font-size:13px;color:var(--c-text-3);}
.search-hint b{color:var(--c-text-2);font-weight:600;}

/* 布局：FAQ + 侧栏 */
.faq-layout{display:grid;grid-template-columns:minmax(0,1fr) 328px;gap:32px;align-items:start;}
.faq-group{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:8px 0 4px;margin-bottom:24px;overflow:hidden;
}
.faq-group-head{
  display:flex;align-items:center;gap:12px;
  padding:18px 24px 14px;border-bottom:1px solid var(--c-line);
}
.faq-group-head .idx{
  font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--c-accent);
  font-variant-numeric:tabular-nums;
}
.faq-group-head h3{font-size:20px;color:var(--c-primary-d);line-height:1.35;}
.faq-group-head .count{
  margin-left:auto;font-size:12px;color:var(--c-text-3);
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:999px;padding:3px 10px;
}
.faq-item{border-bottom:1px solid var(--c-line);position:relative;}
.faq-item:last-child{border-bottom:0;}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background .18s ease;
}
.faq-item.open::before{background:var(--c-accent);}
.faq-q{
  width:100%;min-height:64px;
  display:flex;align-items:center;gap:14px;
  background:transparent;border:0;text-align:left;
  padding:12px 24px;
  transition:background .18s ease,color .18s ease;
}
.faq-q:hover{background:#FAFAF8;}
.faq-q:active{background:var(--c-primary-50);}
.faq-q .no{
  font-size:13px;font-weight:700;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.faq-q .q-text{font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;}
.faq-item.open .faq-q .q-text{color:var(--c-primary-d);}
.faq-q .plus{
  margin-left:auto;flex:0 0 auto;width:24px;height:24px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-primary);font-size:15px;transition:transform .22s ease,color .18s ease;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);color:var(--c-accent);}
.faq-a{
  padding:0 24px 20px 61px;
  font-size:15px;color:var(--c-text-2);line-height:1.85;
}
.faq-a[hidden]{display:none;}
.faq-a strong{color:var(--c-text);font-weight:600;}
.faq-a ul{margin-top:8px;}
.faq-a li{
  position:relative;padding-left:16px;margin-top:6px;
}
.faq-a li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary-50);border:1px solid var(--c-primary);opacity:.75;
}

/* 侧栏 */
.side-col{position:sticky;top:24px;display:grid;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  padding:24px;transition:box-shadow .18s ease,transform .18s ease;
}
.side-card:hover{box-shadow:var(--shadow-hover);}
.side-card h4{font-size:16px;color:var(--c-primary-d);margin-bottom:10px;}
.side-card p{font-size:14px;color:var(--c-text-2);line-height:1.8;}
.contact-card{
  background:linear-gradient(180deg,#FFFFFF 0%,#FBFCFD 100%);
  border:1px solid #D8E0EB;
}
.contact-card .tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--c-ok);
  background:rgba(78,122,106,.12);border-radius:999px;padding:4px 10px;margin-bottom:12px;
}
.contact-card .meta{font-size:13px;color:var(--c-text-3);margin-top:14px;line-height:1.8;}
.contact-card .meta b{color:var(--c-text-2);font-weight:600;}
.side-card .btn{margin-top:16px;}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:44px;padding:10px 0;border-bottom:1px solid var(--c-line);
  font-size:14px;color:var(--c-text-2);
}
.side-link:last-child{border-bottom:0;}
.side-link i{color:var(--c-primary);font-size:12px;transition:transform .18s ease;}
.side-link:hover{color:var(--c-primary);}
.side-link:hover i{transform:translateX(4px);}
.side-thumb{border-radius:10px;overflow:hidden;border:1px solid rgba(27,36,48,.06);margin-bottom:14px;}
.side-thumb img{width:100%;height:130px;object-fit:cover;}

/* CTA 条 */
.cta-band{
  margin-top:56px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:16px;
  box-shadow:var(--shadow-card);
  padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:24px;color:var(--c-primary-d);line-height:1.4;}
.cta-band p{font-size:14px;color:var(--c-text-2);margin-top:8px;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* 相关分类 */
.related{padding:56px 0 0;}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.related-card{
  display:block;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:22px 20px;box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C9D5E6;}
.related-card .num{font-size:12px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.related-card h3{font-size:16px;color:var(--c-primary-d);margin:8px 0 6px;line-height:1.45;}
.related-card p{font-size:13px;color:var(--c-text-2);line-height:1.7;}
.related-card .go{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-primary);margin-top:12px;}
.related-card:hover .go i{transform:translateX(4px);}
.related-card .go i{transition:transform .18s ease;}

/* 页脚 */
.site-footer{
  margin-top:72px;
  background:#F2F3F0;
  border-top:1px solid var(--c-line);
  padding:48px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{font-size:16px;font-weight:700;color:var(--c-primary-d);}
.footer-brand-sub{font-size:13px;color:var(--c-text-2);line-height:1.8;margin-top:10px;max-width:330px;}
.footer-col h4{font-size:13px;font-weight:700;color:var(--c-text);letter-spacing:.04em;margin-bottom:14px;}
.footer-col a,.footer-col p{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:9px;line-height:1.7;}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .main-area{padding:0 24px;}
  .faq-layout{grid-template-columns:minmax(0,1fr) 300px;gap:24px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:959px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main-area{margin-left:0;padding:0 20px;}
  .page-hero h1{font-size:32px;}
  .section-head h2{font-size:24px;}
  .faq-layout{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:26px;}
}
@media (max-width:719px){
  .faq-search{grid-template-columns:1fr;padding:18px;}
  .faq-search .btn{width:100%;}
  .section{padding:40px 0 0;}
  .page-hero{padding:20px 0 4px;}
  .page-hero h1{font-size:28px;margin:14px 0 12px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .faq-a{padding-left:24px;}
  .faq-q .no{display:none;}
  .breadcrumb{padding:18px 0 0;}
}
@media (max-width:479px){
  .main-area{padding:0 16px;}
  .page-hero h1{font-size:24px;}
  .section-head h2{font-size:21px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-q{padding:12px 16px;gap:10px;}
  .faq-q .q-text{font-size:15px;}
  .faq-a{padding:0 16px 18px 16px;}
  .faq-group-head{padding:16px 16px 12px;gap:8px;flex-wrap:wrap;}
  .faq-group-head h3{font-size:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}