/* roulang page: index */
:root{
  --primary:#236B8E;
  --primary-deep:#1B5470;
  --primary-dark:#163B4D;
  --primary-light:#E7F0F4;
  --sand:#D98E4A;
  --sand-light:#F6E8D9;
  --bg:#F5F8FA;
  --paper:#FFFFFF;
  --ink:#13222C;
  --ink-2:#536772;
  --ink-3:#7A8C96;
  --line:#D9E4EA;
  --line-soft:rgba(19,34,44,.08);
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:22px;
  --radius-card:18px;
  --shadow:0 16px 44px rgba(19,34,44,.07);
  --shadow-hover:0 24px 64px rgba(19,34,44,.12);
  --ease:.25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--primary-deep)}
button{font-family:inherit}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{max-width:780px;margin-bottom:48px}
.section-head h2{font-size:clamp(26px,3.2vw,36px);color:var(--ink);margin:16px 0 0}
.section-sub{margin-top:16px;color:var(--ink-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-light);padding:6px 14px;border-radius:999px;
  letter-spacing:.3px;
}
.eyebrow.is-sand{color:#A96428;background:var(--sand-light)}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.btn:focus-visible{outline:3px solid rgba(35,107,142,.3);outline-offset:2px}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);border-color:var(--primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(35,107,142,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(35,107,142,.22)}
.btn-ghost{background:var(--paper);border-color:rgba(35,107,142,.35);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-deep);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-lg{padding:14px 26px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:14px}
.text-link{font-weight:600;border-bottom:1px solid rgba(35,107,142,.35);padding-bottom:2px}
.text-link:hover{border-bottom-color:var(--primary-deep);color:var(--primary-deep)}
.text-link i{font-size:12px;margin-left:6px;transition:transform var(--ease)}
.text-link:hover i{transform:translateX(4px)}
/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(245,248,250,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  backdrop-filter:blur(14px) saturate(1.15);
  border-bottom:1px solid rgba(19,34,44,.08);
  box-shadow:0 6px 24px rgba(19,34,44,.05);
  transition:background var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(19,34,44,.09);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:0;
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.nav-panel{display:flex;align-items:center;gap:32px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  display:inline-block;position:relative;
  font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;border-bottom:2px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.nav-links a:hover{color:var(--primary);border-bottom-color:rgba(35,107,142,.4)}
.nav-links a.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-mobile-cta{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.9);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle:focus-visible{outline:3px solid rgba(35,107,142,.3);outline-offset:2px}
body.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .nav-toggle span:nth-child(2){opacity:0}
body.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* Hero */
.hero{
  position:relative;display:flex;align-items:center;
  min-height:600px;padding:150px 0 96px;
  background:url("/assets/images/backpic/back-1.png") center center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(245,248,250,.97) 0%,rgba(245,248,250,.92) 38%,rgba(245,248,250,.62) 68%,rgba(245,248,250,.18) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:56px;align-items:center}
.hero h1{font-size:clamp(32px,4.3vw,52px);line-height:1.16;margin:22px 0 20px;letter-spacing:-.5px}
.hero-sub{font-size:17px;line-height:1.85;color:var(--ink-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.trust-bar{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:38px;font-size:14px;color:var(--ink-2)}
.trust-bar li{display:flex;align-items:center;gap:8px}
.trust-bar li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--sand);flex:0 0 auto}
.hero-card{
  background:var(--paper);border:1px solid rgba(255,255,255,.9);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-card-body{padding:22px 24px 24px}
.hero-card-title{font-size:16px;font-weight:700;color:var(--ink)}
.hero-card-desc{margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.75}
/* 痛点 */
.pain{background:var(--bg);border-top:1px solid var(--line-soft)}
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;margin-top:8px}
.pain-item{display:flex;gap:20px;padding:30px 0;border-top:1px solid var(--line);align-items:flex-start}
.pain-num{
  flex:0 0 auto;font-size:14px;font-weight:700;color:#A96428;
  background:var(--sand-light);border-radius:8px;padding:4px 10px;line-height:1.6;
}
.pain-item h3{font-size:19px;margin-bottom:8px}
.pain-item p{color:var(--ink-2);font-size:15px;line-height:1.8}
/* 解决方案 */
.solution{background:var(--paper);border-top:1px solid var(--line-soft)}
.solution-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:center;padding:44px 0}
.solution-row + .solution-row{border-top:1px solid var(--line-soft)}
.solution-text h3{font-size:24px;margin:14px 0 12px}
.solution-text p{color:var(--ink-2);font-size:15.5px;line-height:1.85}
.solution-points{margin-top:20px;display:grid;gap:10px}
.solution-points li{
  position:relative;padding-left:24px;font-size:15px;color:var(--ink);
}
.solution-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:2px;background:var(--primary-light);border:2px solid var(--primary);
}
.solution-text .text-link{display:inline-block;margin-top:24px}
.solution-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);border:1px solid var(--line);
  box-shadow:var(--shadow);
}
@media (min-width:1024px){
  .solution-row.is-reverse .solution-text{order:2}
  .solution-row.is-reverse .solution-media{order:1}
}
/* 成果与案例 */
.results{background:var(--paper);border-top:1px solid var(--line-soft)}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;
  padding:34px 0 38px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-bottom:48px;
}
.stat-num{display:block;font-size:32px;font-weight:700;color:var(--primary);line-height:1.2}
.stat-label{display:block;font-size:13px;color:var(--ink-3);letter-spacing:.5px;margin-top:2px}
.stat p{font-size:14px;color:var(--ink-2);line-height:1.75;margin-top:10px}
.case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.case-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(35,107,142,.3)}
.case-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.case-body{padding:26px}
.case-body h3{font-size:20px;margin-bottom:10px}
.case-body p{font-size:15px;color:var(--ink-2);line-height:1.8}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;
  color:var(--primary);background:var(--primary-light);
  padding:4px 10px;border-radius:999px;line-height:1.7;
}
.tag.is-sand{color:#A96428;background:var(--sand-light)}
.case-body .text-link{display:inline-block;margin-top:18px;font-size:14px}
/* 证言 */
.voice{background:var(--bg);border-top:1px solid var(--line-soft)}
.voice-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;align-items:stretch}
.voice-main{
  margin:0;background:var(--primary-light);border-radius:var(--radius-lg);
  border-left:4px solid var(--primary);padding:36px 36px 32px;
}
.voice-main .quote-mark{font-size:34px;line-height:1;color:var(--primary);opacity:.5;font-weight:700}
.voice-main p{font-size:19px;line-height:1.75;color:var(--primary-dark);margin-top:12px}
.voice-meta{margin-top:22px;font-size:13.5px;color:var(--ink-2);font-weight:600}
.voice-side{display:grid;gap:24px}
.voice-small{
  margin:0;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
}
.voice-small p{font-size:15px;line-height:1.8;color:var(--ink)}
.voice-small .voice-meta{margin-top:14px;font-weight:500;color:var(--ink-3)}
/* 最新信息 */
.news{background:var(--paper);border-top:1px solid var(--line-soft)}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.news-head .section-head{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(35,107,142,.3)}
.news-card h3{font-size:18px;line-height:1.5;margin-bottom:12px}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--primary)}
.news-card p{
  font-size:14.5px;color:var(--ink-2);line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line-soft);
}
.news-date{font-size:13px;color:var(--ink-3)}
.news-empty{
  grid-column:1 / -1;text-align:center;padding:56px 24px;
  border:1px dashed var(--line);border-radius:var(--radius-card);
  color:var(--ink-3);font-size:15px;background:var(--bg);
}
.news-empty i{display:block;font-size:24px;color:var(--primary);margin-bottom:12px}
/* FAQ */
.faq{background:var(--bg);border-top:1px solid var(--line-soft)}
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line);background:transparent}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 48px 22px 0;
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{display:inline;font-size:17px;font-weight:600;color:var(--ink)}
.faq-item summary:hover h3{color:var(--primary)}
.faq-item summary:focus-visible{outline:3px solid rgba(35,107,142,.28);outline-offset:4px;border-radius:6px}
.faq-item summary::after{
  content:"";position:absolute;right:6px;top:50%;width:14px;height:14px;
  margin-top:-7px;
  background:
    linear-gradient(var(--primary),var(--primary)) center/14px 2px no-repeat,
    linear-gradient(var(--primary),var(--primary)) center/2px 14px no-repeat;
  transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 48px 24px 0;color:var(--ink-2);font-size:15.5px;line-height:1.85}
/* 最终 CTA */
.final-cta{background:var(--paper);border-top:1px solid var(--line-soft)}
.cta-panel{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:48px;box-shadow:var(--shadow);
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.cta-copy h2{font-size:clamp(24px,3vw,32px);margin:14px 0 16px}
.cta-copy p{color:var(--ink-2);font-size:15.5px;line-height:1.85}
.cta-copy ul{margin-top:22px;display:grid;gap:10px}
.cta-copy li{position:relative;padding-left:24px;font-size:15px}
.cta-copy li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:2px;background:var(--primary-light);border:2px solid var(--primary);
}
.cta-form{display:grid;gap:18px}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.form-field input,.form-field textarea{
  width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color var(--ease),box-shadow var(--ease);
  font-family:inherit;
}
.form-field textarea{height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,107,142,.18);
}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-3)}
.form-tip{font-size:14px;color:var(--primary-deep);background:var(--primary-light);border-radius:var(--radius-sm);padding:10px 14px}
.form-note{font-size:12.5px;color:var(--ink-3);line-height:1.7}
/* 页脚 */
.site-footer{background:#13222C;color:#C9D6DE;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{color:#fff;font-size:19px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#9FB3BE;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col li{font-size:14px;color:#B7C7D1;line-height:1.7}
.footer-col a:hover{color:var(--sand-light)}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA3AE;
}
/* 响应式 */
@media (max-width:1199px){
  .hero-grid{gap:40px}
  .solution-row{gap:40px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-actions .btn{display:none}
  .nav-panel{
    position:fixed;top:76px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(19,34,44,.14);
    padding:12px 24px 26px;display:none;
    flex-direction:column;align-items:stretch;gap:10px;
    max-height:calc(100vh - 76px);overflow:auto;
  }
  .nav-panel.is-open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{
    display:flex;align-items:center;min-height:48px;
    border-bottom:1px solid var(--line-soft);border-left:none;padding:0;
  }
  .nav-links a.active{border-bottom-color:var(--line-soft);color:var(--primary)}
  .nav-mobile-cta{display:block;margin-top:16px}
  .nav-mobile-cta .btn{width:100%}
  .hero{min-height:auto;padding:130px 0 72px}
  .hero::before{background:linear-gradient(180deg,rgba(245,248,250,.97) 0%,rgba(245,248,250,.92) 55%,rgba(245,248,250,.82) 100%)}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-card{max-width:520px}
  .section{padding:72px 0}
  .pain-grid{grid-template-columns:1fr;gap:0}
  .solution-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .case-grid{grid-template-columns:1fr}
  .voice-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .hero{padding:118px 0 60px}
  .hero h1{font-size:clamp(28px,7.4vw,36px);letter-spacing:0}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .trust-bar{font-size:13px;gap:10px 18px;margin-top:28px}
  .news-grid{grid-template-columns:1fr}
  .news-head{margin-bottom:32px}
  .pain-item{padding:24px 0}
  .voice-main{padding:26px}
  .voice-main p{font-size:17px}
  .voice-side{gap:16px}
  .stat-num{font-size:26px}
  .faq-answer{padding-right:16px}
  .faq-item summary{padding-right:40px}
  .cta-panel{padding:26px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  .hero-actions .btn{width:100%}
  .stat-strip{grid-template-columns:1fr;gap:20px;padding:26px 0 30px}
  .case-body,.news-card{padding:20px}
  .brand-text{font-size:17px}
  .nav-inner{height:68px}
  .site-header{--nav-h:68px}
  .nav-panel{top:68px;max-height:calc(100vh - 68px)}
  .hero{padding-top:110px}
  html{scroll-padding-top:84px}
}

/* roulang page: article */
:root{
  --brand:#236B8E;
  --brand-dark:#163B4D;
  --brand-deep:#13222C;
  --brand-light:#E7F0F4;
  --sand:#D98E4A;
  --sand-light:#F6E8D9;
  --bg:#F5F8FA;
  --paper:#FFFFFF;
  --ink:#13222C;
  --ink-2:#536772;
  --ink-3:#7A8C96;
  --line:#D9E4EA;
  --line-soft:rgba(19,34,44,.08);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-card:18px;
  --shadow-sm:0 8px 24px rgba(19,34,44,.06);
  --shadow-md:0 16px 44px rgba(19,34,44,.07);
  --shadow-lg:0 24px 64px rgba(19,34,44,.12);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  padding-top:var(--nav-h);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(35,107,142,.35);
  outline-offset:2px;
  border-radius:8px;
}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .22s ease,color .22s ease,box-shadow .22s ease,transform .18s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(35,107,142,.18);}
.btn-primary:hover{background:#1c5c7b;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(35,107,142,.26);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(35,107,142,.2);}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(35,107,142,.4);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  background:rgba(245,248,250,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  backdrop-filter:blur(14px) saturate(1.15);
  border-bottom:1px solid var(--line-soft);
  box-shadow:0 4px 20px rgba(19,34,44,.05);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--line);
  box-shadow:0 8px 28px rgba(19,34,44,.08);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;flex-shrink:0;}
.brand:hover{color:var(--brand-dark);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,#236B8E,#2F86AD);
  color:#fff;display:grid;place-items:center;
  font-size:18px;font-weight:800;line-height:1;
}
.brand-text{font-size:19px;letter-spacing:.2px;}
.nav-panel{display:flex;align-items:center;gap:20px;flex:1;justify-content:flex-end;}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;}
.nav-links a{
  display:block;padding:9px 14px;border-radius:9px;
  color:var(--ink-2);font-size:15px;font-weight:500;
  transition:background-color .2s ease,color .2s ease;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-light);}
.nav-links a.active{color:var(--brand-dark);background:var(--brand-light);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-mobile-cta{display:none;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 11px;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  border-bottom:1px solid var(--line);
  padding:34px 0 46px;
  background-image:
    linear-gradient(180deg,rgba(245,248,250,.94),rgba(245,248,250,.99)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);margin-bottom:22px;line-height:1.7;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#A9BCC6;}
.breadcrumb .current{
  color:var(--ink-2);max-width:min(100%,560px);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head{max-width:900px;}
.article-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  background:var(--sand-light);color:#8A5423;
  font-size:13px;font-weight:600;margin-bottom:18px;
}
.article-title{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.24;
  letter-spacing:0;
  margin-bottom:18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13.5px;color:var(--ink-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#B7C7D0;display:inline-block;}

/* ---------- 主体布局 ---------- */
.page-main{padding-bottom:8px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
  padding:52px 0 20px;
}
.article-main{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-md);
  padding:44px 46px 40px;
  min-width:0;
}
.article-body{
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  max-width:820px;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:27px;line-height:1.35;margin:44px 0 16px;
  padding-left:14px;border-left:4px solid var(--brand);
  scroll-margin-top:96px;
}
.article-body h3{font-size:21px;line-height:1.45;margin:32px 0 12px;color:var(--brand-dark);}
.article-body h4{font-size:18px;margin:26px 0 10px;}
.article-body p{margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.4em;}
.article-body li{margin-bottom:9px;}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;
  border-left:3px solid var(--brand);
  background:var(--brand-light);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:26px 0;border:1px solid var(--line);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-dark);}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.article-body thead th{background:var(--brand-light);color:var(--brand-dark);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#F8FBFD;}
.article-body pre{
  background:#F2F6F9;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:24px 0;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;color:#1B4A61;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0;}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:56px 20px;
  background:#F8FBFD;border:1px dashed var(--line);border-radius:var(--r-md);
}
.empty-state h2{font-size:24px;margin-bottom:12px;border:none;padding:0;}
.empty-state p{color:var(--ink-2);margin-bottom:22px;}

/* ---------- 标签与页脚操作 ---------- */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:38px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-label{font-size:13px;color:var(--ink-3);margin-right:2px;}
.tag{
  display:inline-block;padding:6px 13px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:13px;font-weight:500;border:1px solid rgba(35,107,142,.14);
  transition:background-color .2s ease,color .2s ease;
}
a.tag:hover{background:#D6E7EE;color:var(--brand-dark);}
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:22px;
}
.link-more{font-size:14px;font-weight:600;color:var(--brand);}
.link-more:hover{color:var(--brand-dark);}
.copy-btn{
  padding:9px 16px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  font-size:13.5px;cursor:pointer;transition:.2s;
}
.copy-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light);}

/* ---------- 侧栏 ---------- */
.article-side{display:grid;gap:22px;position:sticky;top:100px;}
.side-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc-list{list-style:none;display:grid;gap:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;
  font-size:14px;line-height:1.6;color:var(--ink-2);
  border-left:2px solid transparent;
  transition:.2s;
}
.toc-list a:hover{background:var(--brand-light);color:var(--brand-dark);border-left-color:var(--brand);}
.toc-empty{font-size:13px;color:var(--ink-3);line-height:1.7;}
.side-links{list-style:none;display:grid;gap:16px;}
.side-links a{display:flex;gap:12px;align-items:center;color:var(--ink);font-size:14px;line-height:1.55;}
.side-links a:hover{color:var(--brand);}
.side-links img{width:64px;height:56px;object-fit:cover;border-radius:10px;border:1px solid var(--line);flex-shrink:0;}
.side-cta{background:linear-gradient(160deg,#EAF3F7,#F7FBFC);border-color:rgba(35,107,142,.18);}
.side-cta p{font-size:13.5px;color:var(--ink-2);line-height:1.75;margin-bottom:16px;}

/* ---------- 咨询区 ---------- */
.article-cta{padding:64px 0 0;}
.cta-card{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px 44px;
  box-shadow:var(--shadow-md);
}
.cta-card > div:first-child{max-width:640px;}
.cta-card .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:#8A5423;
  background:var(--sand-light);padding:4px 12px;border-radius:999px;margin-bottom:14px;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin-bottom:12px;}
.cta-card p{color:var(--ink-2);font-size:15px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:#C6D6DF;margin-top:84px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr .9fr .9fr .9fr;gap:40px;}
.footer-brand .brand-text{display:block;color:#fff;font-size:20px;font-weight:700;margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#9FB4BF;max-width:330px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;letter-spacing:.4px;}
.footer-col ul{list-style:none;display:grid;gap:10px;font-size:14px;color:#9FB4BF;line-height:1.7;}
.footer-col a{color:#9FB4BF;transition:color .2s ease;}
.footer-col a:hover{color:var(--sand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#7E96A3;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-panel{
    position:fixed;top:var(--nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);
    padding:16px 20px 22px;
    max-height:calc(100vh - var(--nav-h));
    overflow-y:auto;
    transform:translateY(-12px);
    opacity:0;visibility:hidden;
    transition:transform .26s ease,opacity .24s ease,visibility .24s;
  }
  .nav-panel.is-open{transform:none;opacity:1;visibility:visible;}
  .nav-links{flex-direction:column;align-items:stretch;gap:4px;width:100%;}
  .nav-links a{padding:12px 14px;min-height:44px;display:flex;align-items:center;font-size:15px;}
  .nav-mobile-cta{display:block;margin-top:14px;}
  .nav-mobile-cta .btn{width:100%;}
  .nav-toggle{display:flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));}
  .toc-card{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:768px){
  .article-hero{padding:26px 0 34px;}
  .article-layout{padding:34px 0 12px;gap:26px;}
  .article-main{padding:30px 24px 28px;border-radius:var(--r-md);}
  .article-body{font-size:15.5px;line-height:1.8;}
  .article-body h2{font-size:23px;margin:34px 0 14px;}
  .article-body h3{font-size:19px;}
  .article-side{grid-template-columns:1fr;}
  .cta-card{padding:30px 24px;gap:24px;border-radius:var(--r-md);}
  .article-cta{padding:48px 0 0;}
  .site-footer{margin-top:64px;padding:52px 0 24px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-text{font-size:17px;}
  .nav-actions .btn-primary.btn-sm{display:none;}
  .nav-mobile-cta{display:block;}
  .article-title{font-size:26px;line-height:1.32;}
  .article-main{padding:24px 18px 24px;}
  .article-meta{gap:8px 14px;font-size:12.5px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --primary:#236B8E;
  --primary-dark:#163B4D;
  --primary-light:#E7F0F4;
  --sand:#D98E4A;
  --sand-light:#F6E8D9;
  --bg:#F5F8FA;
  --paper:#FFFFFF;
  --ink:#13222C;
  --text-2:#536772;
  --text-3:#7A8C96;
  --border:#D9E4EA;
  --divider:rgba(19,34,44,.08);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-card:19px;
  --shadow:0 16px 44px rgba(19,34,44,.07);
  --shadow-hover:0 24px 64px rgba(19,34,44,.12);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;color:var(--ink);}
h1{font-size:44px;line-height:1.18;}
h2{font-size:32px;line-height:1.28;}
h3{font-size:21px;line-height:1.4;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--primary-dark);}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(35,107,142,.32);
  outline-offset:3px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}
.layout-grid{display:flex;flex-wrap:wrap;margin-left:-14px;margin-right:-14px;}
.layout-grid > .cell{flex:0 0 auto;padding-left:14px;padding-right:14px;min-width:0;width:100%;}
@media screen and (min-width:1024px){
  .layout-grid > .large-3{width:25%;}
  .layout-grid > .large-9{width:75%;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  background:rgba(245,248,250,.72);
  backdrop-filter:blur(14px) saturate(1.15);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  border-bottom:1px solid rgba(19,34,44,.07);
  box-shadow:0 8px 30px rgba(19,34,44,.05);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--border);
  box-shadow:0 10px 26px rgba(19,34,44,.08);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:700;
  font-size:19px;
  letter-spacing:.2px;
  white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  font-size:17px;
  font-weight:700;
  box-shadow:0 6px 16px rgba(35,107,142,.28);
}
.nav-panel{display:flex;align-items:center;gap:28px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  display:inline-block;
  padding:9px 13px;
  border-radius:var(--r-sm);
  font-size:15px;
  color:var(--text-2);
  font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--primary-dark);background:rgba(35,107,142,.08);}
.nav-links a.active{color:var(--primary-dark);font-weight:600;background:rgba(35,107,142,.11);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  background:#fff;
  padding:0;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-mobile-cta{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  text-align:center;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  box-shadow:0 10px 24px rgba(35,107,142,.22);
}
.btn-primary:hover{
  background:#1d5c7a;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(35,107,142,.3);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(35,107,142,.24);}
.btn-ghost{
  background:#fff;
  color:var(--primary);
  border-color:rgba(35,107,142,.42);
}
.btn-ghost:hover{
  background:var(--primary-light);
  color:var(--primary-dark);
  transform:translateY(-2px);
  border-color:var(--primary);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
}
.link-arrow:hover{color:var(--primary-dark);text-decoration-thickness:2px;}
.link-arrow i{font-size:12px;transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  background:var(--bg);
  padding:calc(var(--nav-h) + 26px) 0 0;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--border);}
.crumb .current{color:var(--text-2);}

/* ---------- 窄 Hero ---------- */
.category-hero{
  position:relative;
  margin-top:22px;
  min-height:40vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  border-radius:var(--r-lg);
  background-image:linear-gradient(100deg,rgba(245,248,250,.96) 0%,rgba(245,248,250,.9) 42%,rgba(231,240,244,.62) 72%,rgba(231,240,244,.28) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border:1px solid var(--border);
}
.category-hero .hero-inner{
  padding:52px 48px;
  max-width:720px;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--sand-light);
  color:#8a5323;
  font-size:13px;
  font-weight:600;
  margin-bottom:18px;
}
.hero-badge i{font-size:12px;}
.category-hero h1{
  font-size:40px;
  margin-bottom:16px;
  color:var(--primary-dark);
}
.category-hero .hero-desc{
  font-size:16px;
  color:var(--text-2);
  line-height:1.85;
  margin-bottom:26px;
  max-width:600px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 主体 ---------- */
.page-main{padding:64px 0 24px;}
.side-sticky{
  position:sticky;
  top:calc(var(--nav-h) + 22px);
}
.side-card{
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--shadow);
}
.side-card + .side-card{margin-top:20px;}
.side-title{
  font-size:14px;
  font-weight:700;
  color:var(--text-3);
  letter-spacing:.4px;
  margin-bottom:14px;
}
.side-nav li + li{margin-top:4px;}
.side-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  border-radius:var(--r-sm);
  font-size:14px;
  color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.side-nav a:hover{background:var(--primary-light);color:var(--primary-dark);}
.side-nav .num{
  font-size:12px;
  font-weight:700;
  color:var(--sand);
  min-width:20px;
}
.side-note{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
}
.side-contact{
  background:linear-gradient(160deg,#eef5f8 0%,#ffffff 70%);
  border:1px solid var(--border);
}
.side-contact h4{
  font-size:16px;
  margin-bottom:8px;
  color:var(--primary-dark);
}
.side-contact p{font-size:14px;color:var(--text-2);margin-bottom:16px;}
.side-contact .btn{width:100%;}

.group{margin-bottom:52px;scroll-margin-top:calc(var(--nav-h) + 24px);}
.group:last-child{margin-bottom:0;}
.group-head{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:22px;
  padding-bottom:14px;
  border-bottom:1px solid var(--divider);
}
.group-head .idx{
  font-size:13px;
  font-weight:700;
  color:var(--sand);
  background:var(--sand-light);
  border-radius:8px;
  padding:3px 10px;
}
.group-head h2{
  font-size:22px;
  color:var(--primary-dark);
}
.group-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}

/* ---------- 卡片 ---------- */
.info-card{
  display:flex;
  flex-direction:column;
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.info-card:hover{
  transform:translateY(-3px);
  border-color:rgba(35,107,142,.3);
  box-shadow:var(--shadow-hover);
}
.card-media{
  aspect-ratio:16/10;
  background:var(--primary-light);
  overflow:hidden;
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.info-card:hover .card-media img{transform:scale(1.04);}
.card-body{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.tag{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:var(--primary-light);
  color:var(--primary-dark);
}
.tag-sand{background:var(--sand-light);color:#8a5323;}
.info-card h3{
  font-size:19px;
  margin-bottom:10px;
  color:var(--ink);
}
.info-card .card-desc{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
  margin-bottom:18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.info-card .card-foot{margin-top:auto;}

/* ---------- 内嵌 CTA 条 ---------- */
.inline-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:24px 28px;
  border-radius:var(--r-md);
  background:var(--primary-light);
  border:1px solid rgba(35,107,142,.18);
  margin:8px 0 52px;
}
.inline-cta .cta-text h3{
  font-size:18px;
  color:var(--primary-dark);
  margin-bottom:4px;
}
.inline-cta .cta-text p{
  font-size:14px;
  color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-section{
  margin-top:64px;
  padding-top:52px;
  border-top:1px solid var(--divider);
  scroll-margin-top:calc(var(--nav-h) + 24px);
}
.faq-section h2{
  font-size:26px;
  margin-bottom:8px;
}
.faq-section .faq-sub{
  font-size:15px;
  color:var(--text-2);
  margin-bottom:26px;
}
.faq-item{
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(35,107,142,.35);box-shadow:var(--shadow);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  line-height:1.5;
}
.faq-q:hover{color:var(--primary-dark);}
.faq-q .sign{
  flex:0 0 auto;
  width:24px;height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary);
  font-size:12px;
  transition:transform .28s ease,background .2s ease;
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  border-top:1px solid var(--divider);
  padding-top:16px;
  margin:0 0 0;
}

/* ---------- 底部 CTA ---------- */
.final-cta{
  margin:72px 0 0;
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:46px 44px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  scroll-margin-top:calc(var(--nav-h) + 24px);
  box-shadow:var(--shadow);
}
.final-cta h2{font-size:26px;margin-bottom:10px;color:var(--primary-dark);}
.final-cta p{font-size:15px;color:var(--text-2);max-width:600px;}
.final-cta .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:#13222C;
  color:#c8d5dc;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-text{
  display:inline-block;
  font-size:20px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:#9fb2bc;
  max-width:320px;
}
.footer-col h4{
  font-size:15px;
  color:#fff;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col li{
  font-size:14px;
  color:#9fb2bc;
  line-height:1.9;
  margin-bottom:8px;
}
.footer-col a{color:#9fb2bc;}
.footer-col a:hover{color:var(--sand);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:22px 0 28px;
  font-size:13px;
  color:#7f929d;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .category-hero h1{font-size:36px;}
}
@media screen and (max-width:1023px){
  :root{--nav-h:68px;}
  .nav-toggle{display:flex;}
  .nav-panel{
    position:fixed;
    top:var(--nav-h);
    left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:16px 20px 24px;
    background:#ffffff;
    border-bottom:1px solid var(--border);
    box-shadow:0 22px 40px rgba(19,34,44,.12);
    max-height:calc(100vh - var(--nav-h));
    overflow-y:auto;
  }
  .nav-panel.is-open{display:flex;}
  .nav-links{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-links a{
    display:flex;
    align-items:center;
    min-height:44px;
    font-size:15px;
    padding:10px 12px;
  }
  .nav-actions .btn-primary{display:none;}
  .nav-mobile-cta{display:block;margin-top:14px;}
  .nav-mobile-cta .btn{width:100%;}
  .group-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .category-hero .hero-inner{padding:44px 32px;}
  .final-cta{padding:38px 32px;}
}
@media screen and (min-width:1024px){
  .side-column{position:relative;}
}
@media screen and (max-width:1023px){
  .side-sticky{position:static;margin-bottom:32px;}
  .side-card{margin-bottom:0;}
  .side-card + .side-card{margin-top:16px;}
  .side-nav{display:flex;flex-wrap:wrap;gap:8px;}
  .side-nav li + li{margin-top:0;}
  .side-nav a{padding:8px 12px;background:var(--primary-light);font-size:13px;}
}
@media screen and (max-width:767px){
  h1{font-size:32px;}
  h2{font-size:26px;}
  .container{padding:0 18px;}
  .page-main{padding:48px 0 16px;}
  .crumb-bar{padding-top:calc(var(--nav-h) + 20px);}
  .category-hero{margin-top:16px;min-height:auto;border-radius:var(--r-md);}
  .category-hero .hero-inner{padding:34px 22px;}
  .category-hero h1{font-size:28px;}
  .category-hero .hero-desc{font-size:15px;}
  .group-grid{grid-template-columns:1fr;}
  .group{margin-bottom:42px;}
  .inline-cta{flex-direction:column;align-items:flex-start;padding:22px;}
  .final-cta{flex-direction:column;align-items:flex-start;padding:30px 22px;margin-top:52px;}
  .final-cta h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{margin-top:60px;padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:14px 18px 18px;}
}
@media screen and (max-width:479px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .final-cta .cta-actions{width:100%;flex-direction:column;}
  .final-cta .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --primary:#236B8E;
  --primary-dark:#163B4D;
  --primary-deep:#1d5c7b;
  --primary-light:#E7F0F4;
  --accent:#D98E4A;
  --accent-light:#F6E8D9;
  --accent-text:#9C5F22;
  --bg:#F5F8FA;
  --paper:#FFFFFF;
  --ink:#13222C;
  --text-2:#536772;
  --text-3:#7A8C96;
  --border:#D9E4EA;
  --line:rgba(19,34,44,.08);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-card:19px;
  --shadow-sm:0 6px 20px rgba(19,34,44,.05);
  --shadow-md:0 16px 44px rgba(19,34,44,.07);
  --shadow-lg:0 24px 64px rgba(19,34,44,.12);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
input,textarea,select{font-family:inherit}
.container{width:min(var(--container),calc(100% - 48px));margin-inline:auto}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-divider{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--primary-light);color:var(--primary-dark);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.eyebrow-light{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28)}
.eyebrow-light::before{background:var(--accent)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;text-align:center;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px rgba(35,107,142,.22)}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(35,107,142,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(35,107,142,.22)}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(35,107,142,.35)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(35,107,142,.35);outline-offset:2px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(245,248,250,.72);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  backdrop-filter:blur(14px) saturate(1.15);
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 24px rgba(19,34,44,.05);
  transition:background-color .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--border);
  box-shadow:0 8px 26px rgba(19,34,44,.09);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:76px}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-weight:700;flex:0 0 auto}
.brand:hover{color:var(--primary-dark)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary) 0%,#2f7fa3 100%);
  color:#fff;font-size:17px;font-weight:700;line-height:1;
  box-shadow:0 8px 18px rgba(35,107,142,.28);
}
.brand-text{font-size:18px;letter-spacing:.01em;white-space:nowrap}
.nav-panel{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:flex-end}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  display:inline-block;padding:9px 14px;border-radius:9px;
  color:var(--text-2);font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.nav-links a:hover{color:var(--primary-dark);background:rgba(35,107,142,.08)}
.nav-links a.active{color:var(--primary-dark);font-weight:600;background:rgba(35,107,142,.11)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-mobile-cta{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;border:1px solid var(--border);
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary-dark);transition:transform .25s ease,opacity .25s ease}
.nav-toggle:hover{background:var(--primary-light);border-color:rgba(35,107,142,.35)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 窄 Hero ---------- */
.page-hero{
  position:relative;isolation:isolate;
  padding:132px 0 76px;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:#fff;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(19,34,44,.90) 0%,rgba(22,59,77,.82) 42%,rgba(35,107,142,.42) 100%);
}
.page-hero .container{position:relative}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:24px}
.breadcrumb a{color:rgba(255,255,255,.88);border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:1px}
.breadcrumb a:hover{color:#fff;border-bottom-color:#fff}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:#fff;font-weight:500}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4vw,46px);line-height:1.22;
  max-width:860px;margin-top:20px;
}
.hero-sub{
  color:rgba(255,255,255,.86);font-size:16.5px;line-height:1.85;
  max-width:660px;margin-top:18px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.page-hero .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.45)}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff}

/* ---------- 板块标题 ---------- */
.section-head{max-width:740px;margin-bottom:52px}
.section-head h2{font-size:clamp(26px,3vw,36px);line-height:1.3;margin-top:16px}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- 交错图文 ---------- */
.stagger{display:block}
.stagger-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:60px;align-items:center;padding:44px 0;
}
.stagger-row + .stagger-row{border-top:1px solid var(--line)}
.stagger-row.reverse .stagger-media{order:-1}
.stagger-media{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow-md);
  background:#E6EDF1;aspect-ratio:4/3;
  transition:box-shadow .28s ease,transform .28s ease,border-color .28s ease;
}
.stagger-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.stagger-row:hover .stagger-media{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:rgba(35,107,142,.3)}
.stagger-row:hover .stagger-media img{transform:scale(1.025)}
.stagger-text h3{font-size:clamp(21px,2.2vw,26px);line-height:1.42;margin-top:18px}
.stagger-text .desc{margin-top:14px;color:var(--text-2);font-size:15.8px;line-height:1.85}
.stagger-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:46px;height:34px;padding:0 12px;border-radius:10px;
  background:var(--accent-light);color:var(--accent-text);
  font-size:14px;font-weight:700;letter-spacing:.04em;
}
.check-list{margin-top:22px;display:grid;gap:11px}
.check-list li{position:relative;padding-left:27px;color:var(--text-2);font-size:15.5px;line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:1px;top:.66em;
  width:12px;height:7px;border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:24px;
  font-size:15px;font-weight:600;color:var(--primary);
  border-bottom:1px solid rgba(35,107,142,.32);padding-bottom:3px;
  transition:gap .18s ease,color .18s ease,border-color .18s ease;
}
.text-link::after{content:"→";font-size:14px;transition:transform .18s ease}
.text-link:hover{color:var(--primary-dark);border-bottom-color:var(--primary);gap:10px}
.text-link:hover::after{transform:translateX(2px)}

/* ---------- 中段 CTA 条 ---------- */
.cta-strip{
  margin-top:16px;
  background:var(--primary-light);
  border:1px solid rgba(35,107,142,.16);
  border-radius:var(--r-lg);
  padding:32px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-strip h3{font-size:20px;line-height:1.45;max-width:640px}
.cta-strip p{margin-top:8px;color:var(--text-2);font-size:15px;max-width:640px}

/* ---------- 联系区 ---------- */
.contact-section{background:var(--paper);border-top:1px solid var(--line)}
.contact-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start;
}
.contact-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-md);padding:34px;
}
.contact-card h2{font-size:clamp(22px,2.4vw,28px);line-height:1.4}
.contact-card .card-lead{margin-top:12px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.field{margin-top:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field textarea{
  width:100%;border:1px solid var(--border);border-radius:var(--r-sm);
  background:#fff;color:var(--ink);font-size:15px;line-height:1.6;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field input{height:48px;padding:0 14px}
.field textarea{min-height:118px;padding:12px 14px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9FB0B9}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(35,107,142,.16);
}
.field input:invalid:not(:placeholder-shown){border-color:#C98B8B}
.form-note{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7}
.form-note a{color:var(--primary);border-bottom:1px solid rgba(35,107,142,.35)}
.form-alert{
  display:none;margin-top:18px;padding:12px 16px;border-radius:var(--r-sm);
  background:#EAF4EE;border:1px solid #C9E3D3;color:#2B6B45;font-size:14px;line-height:1.7;
}
.form-alert.show{display:block}
.faq-aside h2{font-size:clamp(22px,2.4vw,28px);line-height:1.4;margin-bottom:10px}
.faq-aside .aside-lead{color:var(--text-2);font-size:15.5px;margin-bottom:22px}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:0;padding:20px 2px;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q h3{font-size:16.5px;font-weight:600;line-height:1.6;margin:0}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  border:1px solid rgba(35,107,142,.35);background:#fff;
  transition:background-color .25s ease,border-color .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq-item.open .faq-icon{background:var(--primary-light);border-color:rgba(35,107,142,.5)}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a-inner{padding:0 4px 22px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.faq-a-inner p + p{margin-top:10px}

/* ---------- 收尾 CTA ---------- */
.final-band{
  background:linear-gradient(115deg,var(--primary-dark) 0%,#1f5876 58%,#2a7799 100%);
  color:#fff;border-radius:var(--r-lg);
  padding:48px 46px;display:flex;align-items:center;justify-content:space-between;
  gap:30px;flex-wrap:wrap;box-shadow:var(--shadow-md);
}
.final-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.4;max-width:620px}
.final-band p{color:rgba(255,255,255,.82);margin-top:12px;font-size:15.5px;max-width:620px}
.final-band .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5)}
.final-band .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff}
.band-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#13222C;color:rgba(255,255,255,.74);padding:72px 0 0;margin-top:88px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;
  padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .brand-text{display:inline-block;font-size:19px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.66)}
.footer-col a{color:rgba(255,255,255,.72);border-bottom:1px solid transparent;padding-bottom:1px}
.footer-col a:hover{color:var(--accent);border-bottom-color:rgba(217,142,74,.5)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:26px 0 32px;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom p{margin:0}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{width:calc(100% - 40px)}
  .stagger-row{gap:44px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
}
@media (max-width:1023px){
  .nav-panel{
    position:fixed;top:76px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--border);
    box-shadow:0 20px 44px rgba(19,34,44,.14);
    padding:12px 20px 24px;
    max-height:calc(100vh - 76px);overflow-y:auto;
  }
  .nav-panel.open{display:flex}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-links a{
    display:flex;align-items:center;min-height:48px;padding:12px 4px;
    border-radius:0;border-bottom:1px solid var(--line);font-size:15.5px;
  }
  .nav-links a.active{background:transparent;color:var(--primary);border-bottom-color:var(--line)}
  .nav-mobile-cta{display:block;margin-top:20px}
  .nav-mobile-cta .btn{width:100%}
  .nav-actions .btn-sm{display:none}
  .nav-toggle{display:flex}
  .page-hero{padding:118px 0 64px}
  .section{padding:64px 0}
  .section-head{margin-bottom:38px}
  .stagger-row{grid-template-columns:minmax(0,1fr);gap:30px;padding:36px 0}
  .stagger-row.reverse .stagger-media{order:0}
  .contact-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .cta-strip{padding:28px;flex-direction:column;align-items:flex-start}
  .final-band{padding:36px 30px;flex-direction:column;align-items:flex-start}
  .site-footer{margin-top:64px;padding-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.75}
  .container{width:calc(100% - 32px)}
  .nav-inner{height:68px;gap:14px}
  .brand-text{font-size:16.5px}
  .brand-mark{width:30px;height:30px;border-radius:9px;font-size:15px}
  .nav-panel{top:68px;max-height:calc(100vh - 68px)}
  .page-hero{padding:104px 0 56px}
  .page-hero h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:15.2px}
  .hero-actions .btn{width:100%}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
  .section-head h2{font-size:24px}
  .stagger-row{padding:28px 0;gap:24px}
  .stagger-text h3{font-size:20px}
  .stagger-text .desc,.check-list li{font-size:15px}
  .cta-strip{padding:24px 22px;border-radius:var(--r-md)}
  .cta-strip h3{font-size:18px}
  .cta-strip .btn{width:100%}
  .contact-card{padding:24px 20px}
  .final-band{padding:30px 22px;border-radius:var(--r-md)}
  .final-band .band-actions{width:100%}
  .final-band .btn{width:100%}
  .faq-q{font-size:15.5px;padding:17px 2px;gap:14px}
  .faq-q h3{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-brand p{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;font-size:12.5px}
}
@media (max-width:479px){
  .brand-text{font-size:15.5px}
  .page-hero h1{font-size:25px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-lg{padding:13px 22px;font-size:15px}
  .footer-col h4{margin-bottom:12px}
}