/* roulang page: index */
:root{
  --primary:#1B5FD9;
  --primary-hover:#1651BE;
  --primary-soft:#EDF3FE;
  --accent:#12B39B;
  --accent-warm:#FF7A45;
  --ink-900:#0E1726;
  --ink-600:#34435A;
  --body-text:#26333F;
  --muted:#5B6B80;
  --line:#E4EAF2;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(14,23,38,.04),0 10px 28px rgba(14,23,38,.05);
  --shadow-hover:0 2px 4px rgba(14,23,38,.06),0 16px 36px rgba(14,23,38,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:1rem;
  line-height:1.75;
  color:var(--body-text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
h1,h2,h3,h4,h5,h6{color:var(--ink-900);margin:0;font-weight:700;line-height:1.3}
h1{font-size:clamp(1.75rem,1.2rem+2.2vw,2.75rem);line-height:1.25}
h2{font-size:clamp(1.375rem,1.1rem+1vw,1.875rem);line-height:1.3}
h3{font-size:1.125rem;font-weight:600}
p{margin:0}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--primary-hover);text-decoration:underline}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(27,95,217,.30);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px!important;
  padding-left:20px;
  padding-right:20px;
  margin-left:auto;
  margin-right:auto;
}
.section{padding:88px 0 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);font-size:1rem}
.section-head.with-link{
  max-width:none;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.section-head.with-link p{max-width:620px}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:.9375rem;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .18s var(--ease);
  text-decoration:none!important;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
  box-shadow:0 1px 2px rgba(27,95,217,.18);
}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff;box-shadow:0 8px 20px rgba(27,95,217,.28);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(27,95,217,.22)}
.btn-outline{
  background:#fff;
  color:var(--ink-900);
  border-color:#D3DDEA;
}
.btn-outline:hover{color:var(--primary);border-color:var(--primary);background:#F2F7FE}
.btn-outline:active{background:#E7F0FD}
.btn-block{width:100%}
.btn[disabled],.btn.disabled{opacity:.55;pointer-events:none}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.875rem;
  font-weight:600;
  color:var(--primary);
}
.text-link i{transition:transform .18s var(--ease)}
.text-link:hover{text-decoration:none;color:var(--primary-hover)}
.text-link:hover i{transform:translateX(3px)}

/* 顶部命令栏导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  height:64px;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.scrolled{height:60px;box-shadow:0 4px 16px rgba(14,23,38,.06)}
.nav-shell{display:flex;align-items:center;gap:24px;height:100%}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-logo{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#1B5FD9,#3B82F6);
  color:#fff;display:grid;place-items:center;font-size:.9375rem;
  box-shadow:0 6px 14px rgba(27,95,217,.28);
}
.brand-name{font-size:1.0625rem;font-weight:700;color:var(--ink-900);letter-spacing:.2px}
.main-nav{display:flex;align-items:center;gap:2px;margin-right:auto}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 12px;
  border-radius:8px;
  font-size:.9375rem;
  font-weight:500;
  color:var(--ink-600);
  transition:all .18s var(--ease);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);text-decoration:none}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:-28px;
  height:2px;border-radius:2px;
  background:var(--primary);
}
.nav-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px;
  background:#F4F7FC;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  transition:all .18s var(--ease);
}
.command-search i{color:var(--muted);font-size:.8125rem}
.command-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:.875rem;color:var(--ink-900);
}
.command-search input::placeholder{color:#93A2B5}
.command-search kbd{
  font-size:.6875rem;color:var(--muted);background:#fff;
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;font-family:inherit;
}
.command-search:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(27,95,217,.14)}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-btn);
  display:grid;place-items:center;
  color:var(--ink-600);border:1px solid var(--line);background:#fff;
  transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:#F2F7FE;text-decoration:none}
.nav-cta{height:40px;padding:0 18px;font-size:.875rem}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
  align-items:center;justify-content:center;font-size:1rem;
}
.drawer-search{display:none}

/* Hero */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:76px 0 72px;
}
.hero::before{
  content:"";
  position:absolute;
  right:-120px;top:-140px;
  width:660px;height:660px;
  background:url('/assets/images/backpic/back-1.webp') no-repeat center/cover;
  border-radius:50%;
  opacity:.10;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  right:180px;bottom:-260px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,179,155,.16),rgba(18,179,155,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:6px 14px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;background:var(--accent-warm);
  box-shadow:0 0 0 4px rgba(255,122,69,.16);
}
.hero h1{margin-top:18px}
.hero-sub{margin-top:18px;font-size:1.0625rem;color:var(--muted);max-width:640px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.trust-row{
  display:flex;flex-wrap:wrap;gap:26px;
  margin-top:34px;padding-top:22px;
  border-top:1px dashed var(--line);
}
.trust-row li{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;color:var(--ink-600)}
.trust-row i{color:var(--accent);font-size:.9375rem}
.hero-panel{
  background:var(--ink-900);
  color:#fff;
  border-radius:20px;
  padding:26px;
  box-shadow:0 24px 56px rgba(14,23,38,.22);
}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:.9375rem;font-weight:600;
  padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12);
}
.status-pill{
  font-size:.75rem;font-weight:600;color:#06372F;
  background:var(--accent);border-radius:999px;padding:3px 10px;
}
.panel-list{padding:6px 0}
.panel-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.08);
  font-size:.9375rem;
}
.panel-list li:last-child{border-bottom:0}
.panel-list span{color:rgba(255,255,255,.72)}
.panel-list strong{color:#fff;font-size:1.125rem;font-weight:700;font-variant-numeric:tabular-nums}
.panel-foot{
  margin-top:18px;padding:14px 16px;border-radius:12px;
  background:rgba(255,255,255,.07);
  font-size:.8125rem;line-height:1.7;color:rgba(255,255,255,.66);
}

/* 指标看板 */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.kpi-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.kpi-card:hover{transform:translateY(-2px);border-color:#C9D8F0;box-shadow:var(--shadow-hover)}
.kpi-value{
  font-size:clamp(2.25rem,1.8rem+1vw,2.75rem);
  font-weight:700;color:var(--ink-900);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.kpi-value small{font-size:1rem;font-weight:600;color:var(--muted);margin-left:4px}
.kpi-label{margin-top:8px;display:flex;align-items:center;gap:10px;font-size:.9375rem;font-weight:600;color:var(--ink-600)}
.trend{font-size:.75rem;font-weight:600;border-radius:999px;padding:2px 9px;background:rgba(18,179,155,.13);color:#0B7F6E}
.trend.warm{background:rgba(255,122,69,.13);color:#C4501F}
.kpi-desc{margin-top:8px;font-size:.8125rem;color:var(--muted)}

/* 服务矩阵 */
.bento-card{
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.bento-card:hover{transform:translateY(-2px);border-color:#C9D8F0;box-shadow:var(--shadow-hover)}
.bento-media{border-radius:var(--radius-sm);overflow:hidden;margin-bottom:20px;aspect-ratio:16/7;background:#EEF3FA}
.bento-media img{width:100%;height:100%;object-fit:cover}
.icon-box{
  width:42px;height:42px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:1rem;margin-bottom:16px;
}
.icon-box.green{background:rgba(18,179,155,.13);color:#0B7F6E}
.icon-box.warm{background:rgba(255,122,69,.13);color:#C4501F}
.bento-card h3{margin-bottom:10px}
.bento-card p{font-size:.9375rem;color:var(--muted)}
.bento-list{margin-top:18px;display:flex;flex-direction:column;gap:9px}
.bento-list li{display:flex;gap:10px;font-size:.875rem;color:var(--ink-600)}
.bento-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;
  background:var(--primary);margin-top:9px;
}
.bento-stat{
  height:100%;
  display:flex;flex-direction:column;justify-content:center;
  background:var(--ink-900);
  color:#fff;
  border-radius:var(--radius);
  padding:26px;
  box-shadow:0 20px 44px rgba(14,23,38,.18);
}
.bento-stat .num{font-size:2.75rem;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.bento-stat .num small{font-size:1.125rem;margin-left:2px}
.bento-stat .cap{margin-top:8px;font-size:.9375rem;font-weight:600;color:rgba(255,255,255,.92)}
.bento-stat .note{margin-top:10px;font-size:.8125rem;color:rgba(255,255,255,.6);line-height:1.7}

/* 结果对比 */
.diff-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  background:var(--primary-soft);
  border:1px solid #D9E6FB;
  border-radius:var(--radius);
  padding:20px 16px;
  margin-bottom:26px;
}
.diff-item{text-align:center}
.diff-item strong{display:block;font-size:1.375rem;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}
.diff-item span{font-size:.8125rem;color:var(--muted)}
.compare-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:stretch}
.compare-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow);
}
.compare-card h3{margin-bottom:6px}
.compare-card .sub{font-size:.8125rem;color:var(--muted);margin-bottom:16px}
.compare-card.is-bad{border-color:#F0DAD8;background:#FEFAFA}
.compare-card.is-good{border-color:#CFE1FB;background:var(--primary-soft)}
.compare-list li{display:flex;gap:10px;align-items:flex-start;padding:10px 0;font-size:.9375rem;color:var(--ink-600);border-bottom:1px dashed rgba(14,23,38,.07)}
.compare-list li:last-child{border-bottom:0}
.compare-list i{margin-top:5px;font-size:.875rem}
.compare-card.is-bad i{color:#D9534F}
.compare-card.is-good i{color:var(--accent)}
.compare-arrow{
  align-self:center;
  width:46px;height:46px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;
  box-shadow:0 10px 24px rgba(27,95,217,.30);
}

/* 内容列表 */
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  color:inherit;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.post-card:hover{text-decoration:none;transform:translateY(-2px);border-color:#C9D8F0;box-shadow:var(--shadow-hover)}
.post-media{aspect-ratio:16/9;background:#EEF3FA;overflow:hidden}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.post-card:hover .post-media img{transform:scale(1.02)}
.post-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:20px}
.badge-soft{
  align-self:flex-start;
  font-size:.75rem;font-weight:600;
  color:var(--primary);background:var(--primary-soft);
  border-radius:999px;padding:3px 10px;
}
.post-body h3{
  font-size:1.0625rem;font-weight:600;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body .excerpt{
  font-size:.875rem;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:.8125rem;color:var(--muted);
}
.post-meta .text-link{padding:0;font-size:.8125rem}
.empty-state{
  border:1px dashed #C9D8F0;
  background:var(--surface);
  border-radius:var(--radius);
  padding:52px 24px;
  text-align:center;
}
.empty-state i{display:block;font-size:1.75rem;color:var(--primary);margin-bottom:14px}
.empty-state p{color:var(--muted);font-size:.9375rem;margin-bottom:18px}

/* FAQ */
.accordion-item{
  border:0!important;
  border-radius:var(--radius-sm)!important;
  background:var(--surface);
  box-shadow:var(--shadow);
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-button{
  font-size:1rem;font-weight:600;color:var(--ink-900);
  padding:18px 20px;
  background:var(--surface)!important;
  box-shadow:none!important;
  border-left:3px solid transparent;
  transition:all .18s var(--ease);
}
.accordion-button:not(.collapsed){
  color:var(--primary);
  background:var(--primary-soft)!important;
  border-left-color:var(--primary);
}
.accordion-button::after{
  background-image:none!important;
  content:"+";
  width:auto;height:auto;
  font-size:1.25rem;font-weight:400;
  color:var(--muted);
  line-height:1;
  display:grid;place-items:center;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.accordion-button:not(.collapsed)::after{content:"×";color:var(--primary);transform:none}
.accordion-body{
  padding:4px 20px 22px;
  font-size:.9375rem;line-height:1.8;color:var(--muted);
}

/* 转化表单 */
.contact-grid{display:grid;grid-template-columns:5fr 6fr;gap:44px;align-items:start}
.contact-points{margin-top:22px;display:flex;flex-direction:column;gap:16px}
.contact-points li{display:flex;gap:14px;align-items:flex-start}
.contact-points .ico{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:var(--primary-soft);color:var(--primary);
  display:grid;place-items:center;font-size:.9375rem;
}
.contact-points strong{display:block;font-size:.9375rem;color:var(--ink-900)}
.contact-points span{font-size:.8125rem;color:var(--muted)}
.contact-info{
  margin-top:28px;padding:20px 22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.contact-info dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:8px 18px;font-size:.875rem}
.contact-info dt{color:var(--muted)}
.contact-info dd{margin:0;color:var(--ink-900);font-weight:600}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  box-shadow:var(--shadow);
}
.form-card h3{margin-bottom:6px}
.form-card .form-hint{font-size:.8125rem;color:var(--muted);margin-bottom:20px}
.form-label{font-size:.875rem;font-weight:600;color:var(--ink-600);margin-bottom:6px}
.form-control,.form-select{
  height:44px;border-radius:var(--radius-btn);
  border:1px solid #D3DDEA;
  font-size:.9375rem;color:var(--body-text);
  padding:0 14px;background:#fff;
  transition:all .18s var(--ease);
}
.form-control::placeholder{color:#9AA9BC}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;resize:vertical}
.form-control:focus,.form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(27,95,217,.14);
  outline:none;
}
.form-check-input{width:16px;height:16px;margin-top:.35rem;border-color:#C6D2E2}
.form-check-input:checked{background-color:var(--primary);border-color:var(--primary)}
.form-check-label{font-size:.8125rem;color:var(--muted)}
.form-text-error{font-size:.8125rem;color:#D9534F;margin-top:4px}

/* 页脚 */
.site-footer{margin-top:88px;background:var(--ink-900);color:#fff;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-logo{box-shadow:none}
.footer-brand b{font-size:1.0625rem;font-weight:700;color:#fff}
.footer-desc{font-size:.875rem;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-contact{margin-top:16px;font-size:.875rem;color:rgba(255,255,255,.72);line-height:2}
.footer-title{font-size:.9375rem;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.875rem;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:#9FC2FF;text-decoration:underline}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.8125rem;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.68)}
.footer-bottom a:hover{color:#9FC2FF}

/* 响应式 */
@media (max-width:1199.98px){
  .hero-grid{gap:36px}
  .command-search{width:200px}
}
@media (max-width:991.98px){
  .section{padding-top:64px}
  .nav-toggle{display:inline-flex}
  .command-search{display:none}
  .nav-cta{display:none}
  .main-nav{
    position:fixed;
    left:0;right:0;top:64px;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:18px 20px 32px;
    background:#fff;
    overflow-y:auto;
    transform:translateX(101%);
    transition:transform .26s var(--ease);
    z-index:1029;
    box-shadow:-10px 0 30px rgba(14,23,38,.08);
  }
  body.nav-open .main-nav{transform:none}
  .nav-link{height:48px;width:100%;font-size:1rem;border-radius:10px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:var(--primary-soft)}
  .drawer-search{
    display:flex;align-items:center;gap:10px;
    height:44px;padding:0 14px;margin-bottom:16px;
    background:#F4F7FC;border:1px solid var(--line);border-radius:var(--radius-btn);
  }
  .drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:.9375rem}
  .hero{padding:56px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero::before{width:460px;height:460px;right:-160px;top:-120px;opacity:.09}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .compare-grid{grid-template-columns:1fr;gap:16px}
  .compare-arrow{transform:rotate(90deg);justify-self:center}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767.98px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding-top:56px}
  .section{padding-top:56px}
  h1{font-size:1.75rem}
  .hero h1{font-size:1.6875rem;line-height:1.32}
  .hero-sub{font-size:1rem}
  .hero-actions .btn{width:100%}
  .trust-row{gap:14px;flex-direction:column}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-value{font-size:2.125rem}
  .diff-strip{grid-template-columns:1fr;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .site-footer{margin-top:56px;padding-top:44px}
  .form-card{padding:22px}
}
@media (max-width:520px){
  .nav-shell{gap:12px}
  .brand-name{font-size:1rem}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .kpi-card{padding:18px}
}

/* roulang page: article */
:root{
  --primary:#1B5FD9;
  --primary-hover:#1651BE;
  --primary-soft:#EDF3FE;
  --accent:#12B39B;
  --accent-warm:#FF7A45;
  --ink-900:#0E1726;
  --ink-600:#34435A;
  --muted:#5B6B80;
  --line:#E4EAF2;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --text:#26333F;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(14,23,38,.04),0 10px 28px rgba(14,23,38,.05);
  --shadow-hover:0 1px 2px rgba(14,23,38,.04),0 16px 36px rgba(14,23,38,.09);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:1rem;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(27,95,217,.3);outline-offset:2px;border-radius:8px}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(14,23,38,.06)}
.nav-shell{display:flex;align-items:center;gap:24px;height:64px;transition:height .2s var(--ease)}
.site-header.is-scrolled .nav-shell{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink-900)}
.brand:hover{text-decoration:none}
.brand-logo{
  width:34px;height:34px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#1B5FD9,#3F82F0);color:#fff;font-size:.95rem;flex-shrink:0;
  box-shadow:0 4px 12px rgba(27,95,217,.28);
}
.brand-name{font-weight:700;font-size:1.0625rem;letter-spacing:.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 12px;border-radius:8px;
  font-size:.9375rem;font-weight:500;color:var(--ink-600);transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover{background:var(--primary-soft);color:var(--primary);text-decoration:none}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.command-search{
  display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 10px 0 12px;border-radius:10px;
  background:#F4F7FC;border:1px solid transparent;transition:all .18s var(--ease);
}
.command-search:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,95,217,.15)}
.command-search i{color:var(--muted);font-size:.85rem}
.command-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:.875rem}
.command-search input::placeholder{color:#94A2B5}
.command-search kbd{
  font-family:inherit;font-size:.6875rem;color:var(--muted);background:#fff;border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;line-height:1.4;
}
.icon-btn{
  width:40px;height:40px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-600);border:1px solid var(--line);background:#fff;transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:#C9D8F0;background:#F2F7FE;text-decoration:none}
.nav-cta{height:40px;padding:0 18px;display:inline-flex;align-items:center;font-size:.9375rem}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink-600);align-items:center;justify-content:center;transition:all .18s var(--ease);
}
.nav-toggle:hover{color:var(--primary);border-color:#C9D8F0}
.drawer-search{
  display:none;align-items:center;gap:8px;height:44px;padding:0 12px;border-radius:10px;background:#F4F7FC;
  border:1px solid var(--line);margin-bottom:12px;
}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:.9375rem}
.drawer-search i{color:var(--muted);font-size:.85rem}

/* ============ 按钮 ============ */
.btn{
  border-radius:10px;font-weight:600;font-size:.9375rem;border-width:1px;
  transition:all .18s var(--ease);
}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 8px 20px rgba(27,95,217,.28);color:#fff}
.btn-primary:active{background:var(--primary-hover);border-color:var(--primary-hover);box-shadow:none;transform:none}
.btn-outline-primary{color:var(--ink-900);border:1px solid #D3DDEA;background:#fff}
.btn-outline-primary:hover,.btn-outline-primary:focus{color:var(--primary);border-color:var(--primary);background:#F2F7FE}
.btn:disabled,.btn.disabled{opacity:.55}

/* ============ 面包屑与文章头 ============ */
.page-main{padding-bottom:64px}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:.8125rem;color:var(--muted);padding:20px 0 0;
}
.crumbs a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--primary);text-decoration:none}
.crumbs .sep{opacity:.55;font-size:.7rem}
.article-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.article-hero-bg{
  position:absolute;top:-40px;right:-60px;width:420px;height:340px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.09;border-radius:32px;pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.article-head{padding:18px 0 30px;max-width:880px}
.article-cat{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);font-size:.75rem;font-weight:600;letter-spacing:.02em;
}
h1.article-title{
  font-size:clamp(1.75rem,1.2rem+2.2vw,2.75rem);line-height:1.25;font-weight:700;
  color:var(--ink-900);margin:16px 0 20px;letter-spacing:-.01em;
}
.article-meta{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:.8125rem;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{color:#9AA9BC}

/* ============ 文章主体 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding-top:40px}
.article-main-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);padding:32px 28px;
}
.article-body{font-size:1rem;line-height:1.85;color:var(--text);min-width:0;word-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(1.375rem,1.1rem+1vw,1.875rem);font-weight:700;line-height:1.3;color:var(--ink-900);
  margin:44px 0 18px;padding-left:14px;border-left:4px solid var(--primary);
}
.article-body h3{font-size:1.125rem;font-weight:600;color:var(--ink-900);margin:30px 0 12px}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 20px}
.article-body li{margin-bottom:8px}
.article-body img{border-radius:var(--radius-md);margin:24px auto;background:#EEF3FA}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--primary-soft);border-left:3px solid var(--primary);
  border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--ink-600);
}
.article-body table{width:100%;border-collapse:collapse;font-size:.9375rem;margin:24px 0;overflow:hidden;border-radius:var(--radius-md)}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:#F4F7FC;font-weight:600;color:var(--ink-900)}
.article-body tbody tr:nth-child(even){background:#FAFBFE}
.article-body a{color:var(--primary)}
.article-body a:hover{text-decoration:underline}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{background:#F4F7FC;border-radius:6px;padding:2px 6px;font-size:.875rem}

/* ============ 目录 ============ */
.toc{display:none}
.toc-title{
  font-size:.75rem;font-weight:700;letter-spacing:.12em;color:var(--muted);margin-bottom:12px;
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  font-size:.8125rem;line-height:1.5;color:var(--ink-600);transition:all .18s var(--ease);
}
.toc-list a:hover{background:#F6F9FE;color:var(--primary);text-decoration:none}
.toc-list a.is-active{color:var(--primary);font-weight:600;border-left-color:var(--primary);background:var(--primary-soft)}
.toc-list .lvl-3 a{padding-left:22px;font-size:.78rem}

/* ============ 标签 ============ */
.article-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.article-tags .label{font-size:.8125rem;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:#F4F7FC;border:1px solid var(--line);font-size:.8125rem;color:var(--ink-600);transition:all .18s var(--ease);
}
.tag:hover{background:var(--primary-soft);border-color:#C9D8F0;color:var(--primary);text-decoration:none}

/* ============ 空状态 ============ */
.empty-state{
  text-align:center;padding:52px 24px;border:1px dashed #C9D8F0;border-radius:var(--radius-lg);background:#FAFCFF;
}
.empty-state i{font-size:2rem;color:#9AA9BC}
.empty-state p{margin:14px 0 18px;color:var(--muted);font-size:.9375rem}

/* ============ 相关推荐 ============ */
.related{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-title{font-size:clamp(1.375rem,1.1rem+1vw,1.875rem);font-weight:700;color:var(--ink-900);margin:0;line-height:1.3}
.section-desc{margin:8px 0 0;font-size:.875rem;color:var(--muted)}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:.875rem;font-weight:600;color:var(--primary);white-space:nowrap;
}
.link-more i{transition:transform .18s var(--ease)}
.link-more:hover{text-decoration:none}
.link-more:hover i{transform:translateX(3px)}
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);height:100%;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:#C9D8F0;box-shadow:var(--shadow-hover);text-decoration:none}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEF3FA}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.02)}
.post-badge{
  position:absolute;top:12px;left:12px;padding:3px 10px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--primary);font-size:.6875rem;font-weight:600;letter-spacing:.02em;
}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{
  font-size:1rem;font-weight:600;line-height:1.5;color:var(--ink-900);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:.875rem;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:.75rem;color:var(--muted);padding-top:8px;border-top:1px solid #F1F5FB;
}
.post-foot .go{color:var(--primary);font-weight:600}

/* ============ 返回分类 ============ */
.back-cats{
  margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;padding:20px 22px;border-radius:var(--radius-lg);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-card);align-items:center;
}
.back-cats .label{font-size:.875rem;color:var(--muted);margin-right:4px}
.cat-chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;border:1px solid #D3DDEA;
  background:#fff;color:var(--ink-900);font-size:.875rem;font-weight:600;transition:all .18s var(--ease);
}
.cat-chip:hover{color:var(--primary);border-color:var(--primary);background:#F2F7FE;text-decoration:none}
.cat-chip i{font-size:.8rem;color:var(--primary)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;margin-top:64px;padding:56px 0 0}
.footer-grid{display:grid;gap:36px;grid-template-columns:1.5fr 1fr 1fr 1fr}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:1.0625rem;margin-bottom:14px;color:#fff}
.footer-desc{color:#A8B4C6;font-size:.875rem;line-height:1.75;margin:0 0 18px;max-width:34em}
.footer-contact{color:#8593A8;font-size:.8125rem;display:flex;flex-direction:column;gap:6px}
.footer-title{font-weight:600;font-size:.9375rem;margin-bottom:16px;color:#fff}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#A8B4C6;font-size:.875rem;transition:color .18s var(--ease)}
.footer-links a:hover{color:#8FC0FF;text-decoration:underline}
.footer-bottom{
  margin-top:46px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.8125rem;color:#8593A8;
}

/* ============ 响应式 ============ */
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 220px;gap:48px;justify-content:center;align-items:start}
  .toc{
    display:block;position:sticky;top:88px;max-height:calc(100vh - 120px);overflow:auto;
    padding:18px 16px;border:1px solid var(--line);border-radius:var(--radius-lg);
    background:#fff;box-shadow:var(--shadow-card);
  }
}
@media (max-width:1199px){
  .article-head{max-width:100%}
  .article-main-card{padding:28px 24px}
}
@media (max-width:991px){
  .nav-shell{gap:14px}
  .main-nav{
    position:fixed;left:0;right:0;top:64px;bottom:0;z-index:1029;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    padding:16px 20px 32px;background:#fff;overflow-y:auto;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
    border-top:1px solid var(--line);
  }
  .main-nav.open{transform:none;opacity:1;pointer-events:auto}
  .drawer-search{display:flex}
  .nav-link{height:48px;width:100%;padding:0 12px;border-radius:10px;font-size:1rem}
  .nav-link.active{background:var(--primary-soft)}
  .nav-link.active::after{display:none}
  .command-search{display:none}
  .nav-toggle{display:inline-flex}
  .footer-grid{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-main-card{padding:24px 20px}
  .article-title{margin:14px 0 16px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-cta{display:none}
  .article-hero-bg{width:280px;height:220px;right:-80px;opacity:.07}
  .article-layout{padding-top:28px;gap:28px}
  .card-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .article-tags{margin-top:34px;padding-top:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  .article-body h2{font-size:1.375rem;margin:34px 0 14px}
  .article-main-card{padding:20px 16px}
  .back-cats{padding:16px}
  .cat-chip{width:100%;justify-content:center}
}

/* roulang page: category1 */
:root{
  --primary:#1B5FD9;
  --primary-hover:#1651BE;
  --primary-soft:#EDF3FE;
  --accent:#12B39B;
  --warm:#FF7A45;
  --ink-900:#0E1726;
  --ink-600:#34435A;
  --text:#26333F;
  --muted:#5B6B80;
  --line:#E4EAF2;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --img-bg:#EEF3FA;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow:0 1px 2px rgba(14,23,38,.04), 0 10px 28px rgba(14,23,38,.05);
  --shadow-hover:0 2px 4px rgba(14,23,38,.05), 0 16px 34px rgba(14,23,38,.09);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:1rem;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary-hover);text-decoration:underline;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:0 4px 16px rgba(14,23,38,.06);}
.nav-shell{display:flex;align-items:center;gap:22px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-logo{
  width:32px;height:32px;border-radius:9px;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:.875rem;
  box-shadow:0 6px 14px rgba(27,95,217,.28);
}
.brand-name{font-size:1.0625rem;font-weight:700;color:var(--ink-900);letter-spacing:.2px;}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 12px;
  font-size:.9375rem;font-weight:500;color:var(--ink-600);
  border-radius:8px;
  border-bottom:2px solid transparent;
  text-decoration:none;
  transition:color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);text-decoration:none;}
.nav-link.active{color:var(--primary);font-weight:600;border-bottom-color:var(--primary);background:transparent;}
.nav-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px 0 12px;
  background:#F4F7FC;border:1px solid transparent;border-radius:var(--radius-btn);
  transition:border-color .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
}
.command-search i{color:var(--muted);font-size:.8125rem;}
.command-search input{
  flex:1 1 auto;min-width:0;border:none;background:transparent;outline:none;
  font-size:.875rem;color:var(--text);
}
.command-search input::placeholder{color:#8D9AAE;}
.command-search kbd{
  font-size:.6875rem;color:var(--muted);background:#fff;border:1px solid var(--line);
  border-radius:6px;padding:1px 5px;font-family:inherit;
}
.command-search:focus-within{background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,95,217,.14);}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--ink-600);background:#fff;
  transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:#C9D8F0;background:var(--primary-soft);text-decoration:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:12px 22px;border-radius:var(--radius-btn);
  font-size:.9375rem;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:all .18s var(--ease);
  text-decoration:none;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,95,217,.3);}
.btn-primary,.btn.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(27,95,217,.28);text-decoration:none;}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--ink-900);border-color:#D3DDEA;}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);background:#F2F7FE;text-decoration:none;}
.btn-disabled,.btn:disabled{opacity:.55;cursor:not-allowed;}
.btn-block{width:100%;}
.nav-cta{height:40px;padding:0 18px;}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--ink-900);
}
.drawer-search{display:none;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:48px 0 44px;
  background:linear-gradient(180deg,#FFFFFF 0%, #F8FAFE 62%, var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;
  border-radius:50%;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.10;pointer-events:none;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:.8125rem;color:var(--muted);margin-bottom:20px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#B7C2D2;}
.crumb .cur{color:var(--ink-600);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--warm);}
.page-hero h1{
  font-size:clamp(1.75rem,1.2rem + 2.2vw,2.5rem);
  line-height:1.25;max-width:900px;
}
.hero-lead{font-size:1.0625rem;color:var(--ink-600);max-width:820px;margin-top:16px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-tags span{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.8125rem;color:var(--ink-600);
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;box-shadow:0 1px 2px rgba(14,23,38,.03);
}
.hero-tags span i{color:var(--accent);font-size:.75rem;}

/* ---------- layout ---------- */
.main-wrap{padding:64px 0 var(--sec);}
.layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:52px;align-items:start;}
.side-anchor{position:sticky;top:88px;}
.side-anchor .anchor-title{
  font-size:.75rem;letter-spacing:.14em;font-weight:700;color:#94A3B8;
  text-transform:uppercase;margin-bottom:14px;
}
.anchor-list{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--line);}
.anchor-list a{
  position:relative;display:block;
  padding:8px 10px 8px 14px;
  font-size:.875rem;color:var(--muted);
  text-decoration:none;border-radius:0 8px 8px 0;
  transition:all .18s var(--ease);
}
.anchor-list a::before{
  content:"";position:absolute;left:-2px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:transparent;transition:background .18s var(--ease);
}
.anchor-list a:hover{color:var(--primary);background:var(--primary-soft);}
.anchor-list a.active{color:var(--primary);font-weight:600;background:var(--primary-soft);}
.anchor-list a.active::before{background:var(--primary);}
.anchor-note{
  margin-top:20px;padding:16px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);
  font-size:.8125rem;color:var(--muted);line-height:1.7;
}
.anchor-note b{display:block;color:var(--ink-900);font-size:.875rem;margin-bottom:6px;}

.content-col{display:flex;flex-direction:column;gap:0;}
.article-block{padding:8px 0 40px;}
.article-block + .article-block{border-top:1px solid var(--line);padding-top:40px;}
.block-index{
  display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.12em;
  color:var(--muted);margin-bottom:12px;
}
.article-block h2{font-size:clamp(1.375rem,1.1rem + 1vw,1.75rem);margin-bottom:14px;scroll-margin-top:96px;}
.article-block h3{font-size:1.125rem;font-weight:600;margin:24px 0 10px;}
.article-block p{color:var(--ink-600);}
.media-row{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:center;}
.media-row.rev{grid-template-columns:8fr 4fr;}
.media-row.rev .media-figure{order:2;}
.media-figure{margin:0;}
.media-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--img-bg);
  border-radius:var(--radius-sm);box-shadow:var(--shadow);
}
.media-figure figcaption{font-size:.75rem;color:var(--muted);text-align:center;margin-top:8px;}
.media-body{min-width:0;}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:6px;}
.check-list li{
  position:relative;padding-left:28px;
  font-size:.9375rem;color:var(--ink-600);line-height:1.75;
}
.check-list li i{
  position:absolute;left:0;top:5px;
  color:var(--accent);font-size:.875rem;
}
.step-list{counter-reset:step;display:flex;flex-direction:column;gap:12px;margin-top:18px;}
.step-list li{
  position:relative;padding:14px 16px 14px 52px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:.9375rem;color:var(--ink-600);box-shadow:0 1px 2px rgba(14,23,38,.03);
}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:16px;top:14px;
  font-size:.8125rem;font-weight:700;color:var(--primary);
}

/* ---------- point cards ---------- */
.point-section{padding:0 0 var(--sec);}
.section-head{margin-bottom:28px;}
.section-head h2{font-size:clamp(1.375rem,1.1rem + 1vw,1.75rem);}
.section-head p{color:var(--muted);font-size:.9375rem;margin-top:10px;}
.point-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);
  transition:transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.point-card:hover{transform:translateY(-2px);border-color:#C9D8F0;box-shadow:var(--shadow-hover);}
.point-icon{
  width:40px;height:40px;border-radius:var(--radius-btn);
  background:var(--primary-soft);color:var(--primary);
  display:grid;place-items:center;font-size:1rem;margin-bottom:16px;
}
.point-card h3{font-size:1.125rem;margin-bottom:10px;}
.point-card p{font-size:.9375rem;color:var(--muted);margin-bottom:14px;}
.point-card .mini-list{display:flex;flex-direction:column;gap:8px;}
.point-card .mini-list li{position:relative;padding-left:18px;font-size:.875rem;color:var(--ink-600);}
.point-card .mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--primary);
}

/* ---------- faq ---------- */
.faq-section{padding:0 0 var(--sec);}
.faq-acc{display:flex;flex-direction:column;gap:12px;}
.faq-acc .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;box-shadow:var(--shadow);
}
.faq-acc .accordion-header{margin:0;}
.faq-acc .accordion-button{
  width:100%;background:#fff;color:var(--ink-900);
  font-size:1rem;font-weight:600;line-height:1.6;
  padding:18px 52px 18px 20px;border:none;border-radius:0;
  box-shadow:none;position:relative;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--primary);background:var(--primary-soft);box-shadow:inset 3px 0 0 var(--primary);}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none;}
.faq-acc .accordion-button:focus-visible{box-shadow:0 0 0 3px rgba(27,95,217,.25);}
.faq-acc .accordion-button::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;background:none;font-size:.8125rem;color:var(--muted);
  transition:transform .22s var(--ease), color .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"\f00d";color:var(--primary);transform:translateY(-50%) rotate(90deg);}
.faq-acc .accordion-body{
  padding:4px 20px 20px;font-size:.9375rem;line-height:1.8;color:var(--muted);
}
.faq-acc .accordion-collapse{border-top:1px solid var(--line);}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink-900);border-radius:20px;
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle at center, rgba(27,95,217,.55), rgba(27,95,217,0) 70%);
}
.cta-band .cta-text{position:relative;z-index:1;max-width:640px;}
.cta-band h2{color:#fff;font-size:clamp(1.25rem,1rem + 1vw,1.625rem);margin-bottom:10px;}
.cta-band p{color:#A9B6C8;font-size:.9375rem;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#fff;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand b{font-size:1.0625rem;}
.footer-desc{color:#A9B6C8;font-size:.875rem;line-height:1.8;max-width:340px;}
.footer-contact{margin-top:18px;font-size:.8125rem;color:#8FA0B8;line-height:1.9;}
.footer-title{font-size:.9375rem;font-weight:600;margin-bottom:16px;color:#fff;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:.875rem;color:#A9B6C8;}
.footer-links a:hover{color:#8FC0FF;text-decoration:underline;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:.8125rem;color:#8FA0B8;flex-wrap:wrap;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .command-search{width:200px;}
}
@media (max-width:991.98px){
  .nav-shell{height:60px;}
  .nav-toggle{display:grid;place-items:center;}
  .command-search{display:none;}
  .main-nav{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:18px 20px 32px;margin:0;
    transform:translateX(-104%);transition:transform .26s var(--ease);
    overflow-y:auto;z-index:999;
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav .nav-link{height:48px;font-size:1rem;border-bottom:1px solid var(--line);border-radius:0;}
  .main-nav .nav-link.active{border-bottom-color:var(--line);box-shadow:inset 3px 0 0 var(--primary);padding-left:14px;background:var(--primary-soft);}
  .drawer-search{
    display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;margin-bottom:14px;
    background:#F4F7FC;border:1px solid transparent;border-radius:var(--radius-btn);
  }
  .drawer-search input{flex:1 1 auto;border:none;background:transparent;outline:none;font-size:.9375rem;}
  .drawer-search i{color:var(--muted);}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .side-anchor{position:static;}
  .anchor-list{
    flex-direction:row;gap:8px;border-left:none;overflow-x:auto;
    padding-bottom:6px;-webkit-overflow-scrolling:touch;
  }
  .anchor-list a{
    flex:0 0 auto;white-space:nowrap;border:1px solid var(--line);border-radius:999px;
    padding:7px 14px;background:#fff;
  }
  .anchor-list a::before{display:none;}
  .anchor-note{display:none;}
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .media-row,.media-row.rev{grid-template-columns:minmax(0,1fr);gap:22px;}
  .media-row.rev .media-figure{order:0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  :root{--sec:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .brand-name{font-size:1rem;}
  .page-hero{padding:34px 0 32px;}
  .page-hero::after{width:280px;height:280px;right:-110px;top:-90px;opacity:.08;}
  .page-hero h1{font-size:clamp(1.5rem,1.25rem + 2vw,2rem);}
  .hero-lead{font-size:1rem;}
  .main-wrap{padding:40px 0 var(--sec);}
  .article-block{padding:4px 0 32px;}
  .article-block + .article-block{padding-top:32px;}
  .article-block h2{font-size:1.375rem;}
  .point-grid{grid-template-columns:minmax(0,1fr);}
  .media-figure img{aspect-ratio:16/10;}
  .step-list li{padding:12px 14px 12px 46px;font-size:.9375rem;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category2 */
:root{
  --primary:#1B5FD9;
  --primary-hover:#1651BE;
  --primary-soft:#EDF3FE;
  --accent:#12B39B;
  --accent-warm:#FF7A45;
  --ink-900:#0E1726;
  --ink-600:#34435A;
  --text:#26333F;
  --muted:#5B6B80;
  --line:#E4EAF2;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(14,23,38,.04),0 10px 28px rgba(14,23,38,.05);
  --shadow-hover:0 6px 18px rgba(14,23,38,.07),0 18px 40px rgba(14,23,38,.09);
  --ease:cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:1rem;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary-hover);text-decoration:underline;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:.2px;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(27,95,217,.3);outline-offset:2px;border-radius:6px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  height:64px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.scrolled{
  height:60px;
  box-shadow:0 4px 16px rgba(14,23,38,.06);
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:22px;
  height:100%;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  text-decoration:none;
}
.brand:hover{text-decoration:none;}
.brand-logo{
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(135deg,#1B5FD9,#3E7BE8);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:.9375rem;
  box-shadow:0 6px 14px rgba(27,95,217,.24);
}
.brand-name{
  font-size:1.0625rem;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:.3px;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:6px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 12px;
  border-radius:8px;
  font-size:.9375rem;
  font-weight:500;
  color:var(--ink-600);
  text-decoration:none;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);text-decoration:none;}
.nav-link.active{color:var(--ink-900);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.drawer-search{display:none;}
.nav-tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:240px;
  height:40px;
  padding:0 10px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  background:#F4F7FC;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.command-search i{color:var(--muted);font-size:.8125rem;}
.command-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:.875rem;
  color:var(--text);
}
.command-search input::placeholder{color:#93A1B5;}
.command-search kbd{
  font-family:inherit;
  font-size:.6875rem;
  color:var(--muted);
  background:#fff;
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
}
.command-search:focus-within{
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(27,95,217,.14);
}
.icon-btn{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:var(--radius-btn);
  background:#F4F7FC;
  border:1px solid transparent;
  color:var(--ink-600);
  transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);background:#EAF1FD;text-decoration:none;}
.btn{
  border-radius:var(--radius-btn);
  font-size:.9375rem;
  font-weight:600;
  transition:all .18s var(--ease);
}
.btn-primary,
.btn-primary:focus{
  background:var(--primary);
  border:1px solid var(--primary);
  color:#fff;
  padding:12px 22px;
  min-height:44px;
  box-shadow:none;
}
.btn-primary:hover{
  background:var(--primary-hover);
  border-color:var(--primary-hover);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(27,95,217,.28);
}
.btn-primary:active{transform:none;box-shadow:none;}
.nav-cta{
  padding:10px 18px;
  min-height:40px;
  font-size:.9375rem;
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-600);
  cursor:pointer;
}
.nav-toggle:hover{color:var(--primary);border-color:#C9D8F0;}

/* ============ 面包屑 ============ */
.crumbs{padding:22px 0 0;font-size:.8125rem;color:var(--muted);}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{margin:0 8px;color:#AEBACB;}
.crumbs .now{color:var(--ink-600);font-weight:500;}

/* ============ 首屏 ============ */
.page-hero{padding:20px 0 8px;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:40px;
  align-items:center;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:.8125rem;
  font-weight:600;
}
.hero-title{
  font-size:clamp(1.75rem,1.2rem+2.2vw,2.75rem);
  font-weight:700;
  line-height:1.25;
  margin:16px 0 14px;
}
.hero-sub{
  font-size:1rem;
  line-height:1.8;
  color:var(--muted);
  max-width:620px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.btn-outline-soft{
  background:#fff;
  border:1px solid #D3DDEA;
  color:var(--ink-900);
  padding:12px 22px;
  min-height:44px;
}
.btn-outline-soft:hover{
  border-color:var(--primary);
  color:var(--primary);
  background:#F2F7FE;
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin-top:26px;
}
.trust-item{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--ink-600);
}
.trust-item i{color:var(--accent);}
.hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:#EEF3FA;
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
}
.hero-badge{
  position:absolute;
  left:14px;
  bottom:14px;
  right:14px;
  padding:12px 16px;
  border-radius:var(--radius-md);
  background:rgba(255,255,255,.95);
  box-shadow:0 8px 22px rgba(14,23,38,.1);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.hero-badge span{font-size:.8125rem;color:var(--muted);}
.hero-badge b{display:block;font-size:1.125rem;color:var(--ink-900);font-variant-numeric:tabular-nums;}

/* ============ 区块通用 ============ */
.section{padding:56px 0;}
.section-tight{padding:36px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.section-title{
  font-size:clamp(1.375rem,1.1rem+1vw,1.875rem);
  font-weight:700;
  line-height:1.3;
  margin-bottom:8px;
}
.section-desc{font-size:.9375rem;color:var(--muted);max-width:720px;}
.section-link{
  flex-shrink:0;
  font-size:.875rem;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.section-link i{transition:transform .18s var(--ease);}
.section-link:hover i{transform:translateX(3px);}

/* ============ 标签条 ============ */
.tabs-wrap{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:6px 2px 14px;
  scrollbar-width:thin;
}
.tabs-wrap::-webkit-scrollbar{height:4px;}
.tabs-wrap::-webkit-scrollbar-thumb{background:#D6E0EE;border-radius:4px;}
.tab-pill{
  flex:0 0 auto;
  padding:9px 20px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-600);
  font-size:.875rem;
  font-weight:500;
  cursor:pointer;
  white-space:nowrap;
  transition:all .18s var(--ease);
}
.tab-pill:hover{border-color:#C9D8F0;color:var(--primary);}
.tab-pill.active{
  background:var(--primary);
  border-color:var(--primary);
  color:#fff;
  box-shadow:0 8px 18px rgba(27,95,217,.22);
}
.lead-box{
  background:#fff;
  border:1px solid var(--line);
  border-left:3px solid var(--primary);
  border-radius:var(--radius-md);
  padding:18px 22px;
  font-size:.9375rem;
  line-height:1.9;
  color:var(--ink-600);
}

/* ============ 信息卡网格 ============ */
.group-block{margin-top:40px;}
.group-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
}
.group-index{
  width:32px;
  height:32px;
  flex-shrink:0;
  display:grid;
  place-items:center;
  border-radius:10px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:.8125rem;
  font-weight:700;
}
.group-head h2{
  font-size:clamp(1.25rem,1.05rem+.8vw,1.5rem);
  font-weight:700;
}
.info-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.info-card{
  display:flex;
  gap:14px;
  padding:22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.info-card:hover{
  transform:translateY(-2px);
  border-color:#C9D8F0;
  box-shadow:var(--shadow-hover);
}
.card-icon{
  flex-shrink:0;
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:var(--radius-md);
  background:var(--primary-soft);
  color:var(--primary);
  font-size:.9375rem;
}
.card-icon.warm{background:#FFF1EA;color:var(--accent-warm);}
.card-icon.mint{background:#E8F8F4;color:var(--accent);}
.info-card h3{
  font-size:1.0625rem;
  font-weight:600;
  margin-bottom:8px;
}
.info-card p{
  font-size:.9375rem;
  line-height:1.8;
  color:var(--muted);
}

/* ============ 清单表 ============ */
.table-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.table-responsive{overflow-x:auto;}
table.spec-table{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:.9375rem;
}
table.spec-table thead th{
  background:#F7FAFF;
  color:var(--ink-600);
  font-weight:600;
  font-size:.875rem;
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.spec-table tbody td{
  padding:14px 18px;
  border-bottom:1px solid #EFF3F9;
  color:var(--ink-600);
  vertical-align:top;
}
table.spec-table tbody tr:nth-child(even){background:#FAFCFF;}
table.spec-table tbody tr:last-child td{border-bottom:0;}
table.spec-table tbody td:first-child{
  color:var(--ink-900);
  font-weight:600;
  white-space:nowrap;
}
.cell-tag{
  display:inline-block;
  padding:2px 10px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:600;
  background:var(--primary-soft);
  color:var(--primary);
}
.cell-tag.mint{background:#E8F8F4;color:#0E8F7C;}
.cell-tag.warm{background:#FFF1EA;color:#E2601F;}

/* ============ FAQ ============ */
.accordion-item{
  border:0;
  background:var(--surface);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.accordion-button{
  width:100%;
  padding:18px 20px;
  font-size:1rem;
  font-weight:600;
  color:var(--ink-900);
  background:#fff;
  border:0;
  box-shadow:none;
}
.accordion-button:not(.collapsed){
  background:var(--primary-soft);
  color:var(--primary);
  box-shadow:inset 3px 0 0 var(--primary);
}
.accordion-button:focus{box-shadow:none;outline:none;}
.accordion-button::after{
  content:"+";
  width:24px;
  height:24px;
  flex:0 0 24px;
  margin-left:16px;
  display:grid;
  place-items:center;
  background-image:none;
  border:1px solid var(--line);
  border-radius:8px;
  font-size:1.0625rem;
  line-height:1;
  color:var(--muted);
  transition:transform .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.accordion-button:not(.collapsed)::after{
  content:"×";
  transform:rotate(180deg);
  color:var(--primary);
  border-color:#C9D8F0;
  background:#fff;
}
.accordion-body{
  padding:4px 20px 20px;
  font-size:.9375rem;
  line-height:1.85;
  color:var(--muted);
}

/* ============ 相关分类 ============ */
.related-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);border-color:#C9D8F0;box-shadow:var(--shadow-hover);text-decoration:none;}
.related-card .thumb{overflow:hidden;background:#EEF3FA;}
.related-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.related-card:hover .thumb img{transform:scale(1.02);}
.related-body{padding:18px 20px 20px;}
.related-body h3{font-size:1.0625rem;font-weight:600;margin-bottom:8px;}
.related-body p{font-size:.875rem;line-height:1.75;color:var(--muted);}
.related-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:14px;
  font-size:.8125rem;
  color:var(--muted);
}
.badge-soft{
  display:inline-block;
  padding:3px 10px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary);
  font-size:.75rem;
  font-weight:600;
}
.badge-soft.current{background:#E8F8F4;color:#0E8F7C;}

/* ============ 表单 ============ */
.form-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:32px;
  align-items:start;
}
.form-side h2{
  font-size:clamp(1.375rem,1.1rem+1vw,1.75rem);
  font-weight:700;
  line-height:1.3;
  margin-bottom:14px;
}
.form-side > p{font-size:.9375rem;color:var(--muted);line-height:1.85;}
.point-list{
  list-style:none;
  padding:0;
  margin:20px 0 0;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.point-list li{
  display:flex;
  gap:10px;
  font-size:.9375rem;
  color:var(--ink-600);
  line-height:1.75;
}
.point-list i{color:var(--accent);margin-top:6px;font-size:.75rem;}
.contact-lines{
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:.875rem;
  color:var(--muted);
  line-height:2;
}
.contact-lines b{color:var(--ink-900);font-weight:600;}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:26px;
}
.form-label{
  font-size:.875rem;
  font-weight:500;
  color:var(--ink-600);
  margin-bottom:6px;
}
.form-control,.form-select{
  min-height:44px;
  padding:10px 14px;
  border-radius:var(--radius-btn);
  border:1px solid #D3DDEA;
  font-size:.9375rem;
  color:var(--text);
  background-color:#fff;
}
.form-control::placeholder{color:#9BA9BB;}
.form-control:focus,.form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(27,95,217,.14);
}
textarea.form-control{min-height:110px;resize:vertical;}
.form-check-input{width:16px;height:16px;border-color:#C7D3E3;margin-top:5px;}
.form-check-input:checked{background-color:var(--primary);border-color:var(--primary);}
.form-check-label{font-size:.8125rem;color:var(--muted);}
.form-note{font-size:.8125rem;color:#C0392B;margin-top:6px;display:none;}
.form-note.show{display:block;}
.form-tip{font-size:.8125rem;color:var(--muted);margin-top:14px;}
.form-alert{
  display:none;
  margin-top:14px;
  padding:12px 16px;
  border-radius:var(--radius-md);
  background:#E8F8F4;
  color:#0E8F7C;
  font-size:.875rem;
}
.form-alert.show{display:block;}

/* ============ 底部 CTA 条 ============ */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding:26px 28px;
  border-radius:var(--radius-lg);
  border:1px solid #D6E4F8;
  background:linear-gradient(180deg,#F4F8FF,#EDF3FE);
}
.cta-bar h2{font-size:1.25rem;font-weight:700;margin-bottom:6px;}
.cta-bar p{font-size:.875rem;color:var(--muted);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:#fff;
  margin-top:64px;
  padding-top:56px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2.2fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.0625rem;
  margin-bottom:14px;
}
.footer-brand b{font-weight:700;letter-spacing:.3px;}
.footer-desc{
  font-size:.875rem;
  line-height:1.85;
  color:rgba(255,255,255,.68);
  max-width:360px;
}
.footer-contact{
  margin-top:16px;
  font-size:.8125rem;
  line-height:2;
  color:rgba(255,255,255,.55);
}
.footer-title{
  font-size:.9375rem;
  font-weight:600;
  margin-bottom:16px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  font-size:.875rem;
  color:rgba(255,255,255,.7);
  text-decoration:none;
}
.footer-links a:hover{color:#9EC3F7;text-decoration:underline;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  padding:18px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:.8125rem;
  color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .command-search{width:200px;}
}
@media (max-width:991px){
  .nav-toggle{display:grid;place-items:center;}
  .command-search{display:none;}
  .main-nav{
    position:fixed;
    top:64px;
    left:0;
    right:0;
    bottom:0;
    margin:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:16px;
    background:#fff;
    transform:translateX(102%);
    transition:transform .28s var(--ease);
    overflow-y:auto;
    z-index:1029;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-link{height:48px;padding:0 14px;border-radius:10px;}
  .nav-link.active{background:var(--primary-soft);}
  .nav-link.active::after{display:none;}
  .drawer-search{
    display:flex;
    align-items:center;
    gap:8px;
    height:44px;
    padding:0 14px;
    margin-bottom:10px;
    border-radius:var(--radius-btn);
    background:#F4F7FC;
    border:1px solid var(--line);
  }
  .drawer-search i{color:var(--muted);font-size:.8125rem;}
  .drawer-search input{flex:1;border:0;background:transparent;outline:none;font-size:.9375rem;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-sub{max-width:none;}
  .form-grid{grid-template-columns:1fr;gap:24px;}
  .info-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:44px 0;}
  .page-hero{padding:14px 0 4px;}
  .nav-cta{padding:9px 14px;font-size:.875rem;}
  .related-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:22px;}
  .cta-bar .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .trust-row{gap:16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .form-card{padding:20px;}
}
@media (max-width:520px){
  .hero-badge{flex-direction:column;align-items:flex-start;gap:4px;}
  .hero-title{font-size:1.75rem;}
  .tab-pill{padding:8px 16px;font-size:.8125rem;}
  .info-card{padding:18px;flex-direction:column;gap:12px;}
  .group-head h2{font-size:1.125rem;}
}