/* roulang page: index */
:root{
  --primary:#1F5FE0;
  --primary-dark:#1749B8;
  --primary-light:#EAF1FE;
  --primary-rgb:31,95,224;
  --accent:#0FB5A0;
  --accent-dark:#0A9A88;
  --amber:#FFB020;
  --bg:#F6F9FD;
  --card:#FFFFFF;
  --alt:#EFF4FB;
  --text:#16233A;
  --text-2:#5A6A85;
  --text-3:#93A1B8;
  --line:#E3EAF4;
  --line-soft:#E9EFF8;
  --footer:#101F38;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 8px rgba(20,45,90,.06);
  --shadow-hover:0 14px 30px rgba(20,45,90,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,95,224,.32);outline-offset:2px;}

/* Bootstrap 覆盖 */
:root{
  --bs-primary:#1F5FE0;
  --bs-primary-rgb:31,95,224;
  --bs-body-bg:#F6F9FD;
  --bs-body-color:#16233A;
  --bs-link-color:#1F5FE0;
  --bs-link-hover-color:#1749B8;
  --bs-border-radius:14px;
  --bs-border-color:#E3EAF4;
  --bs-font-sans-serif:var(--font-sans);
}
.btn{
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  line-height:1;
}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px rgba(31,95,224,.25);}
.btn-primary{
  --bs-btn-bg:var(--primary);
  --bs-btn-border-color:var(--primary);
  --bs-btn-hover-bg:var(--primary-dark);
  --bs-btn-hover-border-color:var(--primary-dark);
  --bs-btn-active-bg:var(--primary-dark);
  --bs-btn-active-border-color:var(--primary-dark);
  --bs-btn-color:#fff;
  --bs-btn-hover-color:#fff;
  --bs-btn-active-color:#fff;
  --bs-btn-disabled-bg:var(--primary);
  --bs-btn-disabled-border-color:var(--primary);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(31,95,224,.24);}
.btn-outline-primary{
  --bs-btn-color:var(--primary);
  --bs-btn-border-color:var(--primary);
  --bs-btn-bg:#FFFFFF;
  --bs-btn-hover-bg:var(--primary-light);
  --bs-btn-hover-color:var(--primary-dark);
  --bs-btn-hover-border-color:var(--primary);
  --bs-btn-active-bg:var(--primary-light);
  --bs-btn-active-color:var(--primary-dark);
  --bs-btn-active-border-color:var(--primary);
}
.btn-outline-primary:hover{transform:translateY(-2px);}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--text-2);border-color:transparent;padding:0 8px;}
.btn-ghost:hover{color:var(--primary);}
.card{
  --bs-card-border-radius:var(--radius-card);
  --bs-card-border-color:var(--line-soft);
  --bs-card-bg:#fff;
  --bs-card-inner-border-radius:var(--radius-img);
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);
}
.form-control,.form-select{
  height:46px;
  border-radius:var(--radius-btn);
  border:1px solid #D9E3F0;
  font-size:15px;
  color:var(--text);
  padding:0 14px;
  background-color:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-select{background-position:right 12px center;}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;}
.form-control:focus,.form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,95,224,.16);
  outline:none;
}
.form-control::placeholder{color:var(--text-3);}
.form-label{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:6px;}
.form-check-input:checked{background-color:var(--primary);border-color:var(--primary);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(31,95,224,.18);border-color:var(--primary);}
.accordion{
  --bs-accordion-border-color:var(--line);
  --bs-accordion-border-radius:0;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-bg:#F6F9FD;
  --bs-accordion-active-color:var(--text);
  --bs-accordion-btn-color:var(--text);
  --bs-accordion-btn-padding-y:18px;
}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:#fff;}
.accordion-item:first-of-type,.accordion-item:last-of-type{border-radius:0;}
.accordion-button{
  font-size:16px;
  font-weight:600;
  color:var(--text);
  background:#fff;
  padding:18px 20px;
  gap:12px;
  box-shadow:none;
}
.accordion-button::after{display:none;}
.accordion-button::before{
  content:"+";
  color:var(--primary);
  font-size:20px;
  font-weight:600;
  line-height:1;
  width:16px;
  text-align:center;
  flex:0 0 16px;
}
.accordion-button:not(.collapsed)::before{content:"−";}
.accordion-button:not(.collapsed){background:#F6F9FD;box-shadow:none;}
.accordion-body{font-size:15px;color:var(--text-2);line-height:1.85;padding:0 20px 20px 48px;background:#F6F9FD;}
.breadcrumb{--bs-breadcrumb-divider:"/";font-size:13px;color:var(--text-3);}
.breadcrumb-item+.breadcrumb-item::before{color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.pagination{--bs-pagination-color:var(--text-2);--bs-pagination-border-color:var(--line);}
.modal-content{border:0;border-radius:16px;box-shadow:0 24px 60px rgba(11,26,54,.18);}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px;}
.modal-title{font-size:20px;font-weight:600;}
.modal-body{padding:22px 24px 26px;}
.modal-footer{border-top:1px solid var(--line);}

/* 通用 */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section-alt{background:var(--alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{font-size:32px;font-weight:700;line-height:1.3;color:var(--text);}
.section-desc{font-size:15px;color:var(--text-2);margin-top:10px;max-width:640px;line-height:1.8;}
.text-link{font-size:15px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:8px;white-space:nowrap;}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}
.badge-tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:var(--primary-light);
  color:var(--primary);
  line-height:1;
}
.badge-soft-amber{background:#FFF4E0;color:#A66A00;}
.badge-soft-accent{background:#E3F7F4;color:var(--accent-dark);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-icon{
  width:34px;height:34px;border-radius:10px;
  background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);
}
.brand-icon svg{width:22px;height:22px;}
.brand-text{font-size:18px;font-weight:700;color:var(--text);line-height:1.2;}
.brand-sub{font-size:12px;color:var(--text-3);line-height:1.2;margin-top:2px;}
.brand:hover .brand-text{color:var(--primary);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:20px 0;
  line-height:1.4;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:14px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--primary);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  position:relative;
  width:220px;
}
.nav-search input{
  width:100%;
  height:40px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg);
  padding:0 40px 0 16px;
  font-size:14px;
  color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  outline:none;
  background:#fff;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(31,95,224,.16);
}
.nav-search i{position:absolute;right:15px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px;}
.nav-btn-sm{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--text);
  align-items:center;
  justify-content:center;
  font-size:17px;
  margin-left:auto;
}
.nav-toggle:hover{color:var(--primary);border-color:var(--primary);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,26,54,.4);
  opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
  z-index:1040;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:300px;
  max-width:86vw;
  height:100%;
  background:#fff;
  z-index:1050;
  transform:translateX(100%);
  transition:transform .24s ease;
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
  box-shadow:-10px 0 30px rgba(11,26,54,.12);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--text-2);font-size:16px;
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary);}
.drawer-search{position:relative;margin-bottom:20px;}
.drawer-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:var(--bg);padding:0 42px 0 16px;font-size:14px;
}
.drawer-search input:focus{outline:none;background:#fff;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,95,224,.16);}
.drawer-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--text-3);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:15px;
  color:var(--text-2);
  padding:14px 4px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.drawer-nav a:hover{color:var(--primary);}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;}
.drawer-nav a i{font-size:12px;color:var(--text-3);}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px;}
.drawer-actions .btn{width:100%;}

/* Hero */
.hero{padding:64px 0 72px;background:var(--bg);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--text-2);font-weight:600;
  margin-bottom:20px;
}
.hero-eyebrow span.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.hero h1{font-size:44px;line-height:1.3;font-weight:700;color:var(--text);}
.hero-sub{font-size:18px;color:var(--text-2);line-height:1.8;margin-top:18px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.trust-num{font-size:24px;font-weight:600;color:var(--primary);line-height:1.2;}
.trust-label{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.5;}
.hero-media{position:relative;}
.hero-media img{width:100%;border-radius:16px;box-shadow:var(--shadow-card);object-fit:cover;}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.pain-card{
  background:#fff;
  border:1px solid var(--line-soft);
  border-left:4px solid var(--primary);
  border-radius:var(--radius-card);
  padding:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.pain-q{font-size:17px;font-weight:600;color:var(--text);line-height:1.5;}
.pain-a{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:12px;}

/* 方案 */
.solution-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;}
.solution-card{
  background:#fff;
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.solution-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.solution-main{grid-column:span 4;}
.solution-side{grid-column:span 2;}
.solution-half{grid-column:span 3;}
.solution-thumb{
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--alt);
  margin-bottom:18px;
}
.solution-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.solution-card:hover .solution-thumb img{transform:scale(1.03);}
.solution-title{font-size:17px;font-weight:600;color:var(--text);line-height:1.5;}
.solution-main .solution-title{font-size:20px;}
.solution-text{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:10px;flex:1;}
.solution-card .text-link{margin-top:16px;}

/* 数据 */
.stats-band{background:var(--primary-light);padding:64px 0;}
.stats-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:16px;margin-bottom:36px;}
.stats-head h2{font-size:32px;font-weight:700;line-height:1.3;}
.stats-head p{font-size:14px;color:var(--text-2);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-item{background:#fff;border-radius:var(--radius-card);padding:24px;border:1px solid #E2EBFA;}
.stat-num{font-size:36px;font-weight:600;color:var(--primary);line-height:1.15;}
.stat-label{font-size:14px;color:var(--text-2);margin-top:8px;}

/* CMS 列表 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;
  border:1px solid var(--line-soft);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#DCE7F7;}
.post-thumb{
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--alt);
  margin-bottom:16px;
}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-badges{display:flex;align-items:center;gap:8px;margin-bottom:12px;}
.post-title{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card:hover .post-title{color:var(--primary);}
.post-summary{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  margin-top:10px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  flex:1;
}
.post-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.post-foot i{font-size:12px;color:var(--primary);transition:transform .2s ease;}
.post-card:hover .post-foot i{transform:translateX(4px);}
.cms-empty{
  background:#fff;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:56px 24px;
  text-align:center;
}
.cms-empty i{font-size:28px;color:var(--text-3);}
.cms-empty p{font-size:15px;color:var(--text-2);margin-top:14px;}
.cms-empty a{margin-top:12px;display:inline-flex;font-size:14px;font-weight:600;}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);}

/* CTA */
.cta-band{
  background:var(--primary-light);
  border-radius:16px;
  padding:32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-band h2{font-size:24px;font-weight:700;line-height:1.4;color:var(--text);}
.cta-band p{font-size:15px;color:var(--text-2);margin-top:10px;max-width:620px;line-height:1.8;}

/* 隐私条 */
.privacy-note{
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.8;
  padding:24px 0 0;
}
.privacy-note a{color:var(--text-2);text-decoration:underline;}

/* 页脚 */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:88px;}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-icon{background:rgba(255,255,255,.1);color:#7EA8F5;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.5);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.78);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  transition:background-color .2s ease,color .2s ease;
}
.footer-social a:hover{background:var(--primary);color:#fff;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.64);}
.footer-col a:hover{color:#fff;}
.footer-col span{font-size:14px;color:rgba(255,255,255,.64);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* 表单反馈 */
.form-feedback{
  display:none;
  font-size:13px;
  border-radius:10px;
  padding:10px 14px;
  margin-bottom:16px;
  line-height:1.7;
}
.form-feedback.is-ok{display:block;background:#E3F7F4;color:var(--accent-dark);}
.form-feedback.is-error{display:block;background:#FFF4E0;color:#A66A00;}
.form-hint{font-size:13px;color:var(--text-3);line-height:1.7;}
.privacy-check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-3);line-height:1.6;}
.privacy-check input{margin-top:4px;}

/* 响应式 */
@media (max-width:1199px){
  .hero h1{font-size:38px;}
  .section-title,.stats-head h2{font-size:28px;}
}
@media (max-width:991px){
  .nav-links,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:56px;}
  .section{padding:64px 0;}
  .hero{padding:48px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:16px;max-width:none;}
  .hero-media{order:2;}
  .trust-bar{grid-template-columns:repeat(2,1fr);margin-top:32px;}
  .pain-grid{grid-template-columns:repeat(2,1fr);}
  .solution-main,.solution-side,.solution-half{grid-column:span 6;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .footer-top{grid-template-columns:repeat(2,1fr);gap:28px;}
  .stats-band{padding:48px 0;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container-x{padding:0 16px;}
  .section{padding:48px 0;}
  .section-title,.stats-head h2{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .hero h1{font-size:28px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .pain-grid{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat-num{font-size:28px;}
  .cta-band{padding:24px;}
  .cta-band h2{font-size:20px;}
  .cta-band .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;}
  .site-footer{padding-top:48px;margin-top:56px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-body{padding-left:20px;}
}
@media (max-width:520px){
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:1fr;}
  .hero h1{font-size:26px;}
  .brand-sub{display:none;}
}

/* roulang page: article */
:root{
  --brand:#1F5FE0;
  --brand-dark:#1749B8;
  --brand-soft:#EAF1FE;
  --accent:#0FB5A0;
  --accent-dark:#0A9A88;
  --amber:#FFB020;
  --bg:#F6F9FD;
  --bg-alt:#EFF4FB;
  --surface:#FFFFFF;
  --text:#16233A;
  --text-2:#5A6A85;
  --text-3:#93A1B8;
  --line:#E3EAF4;
  --line-2:#E9EFF8;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 2px 8px rgba(20,45,90,.06);
  --shadow-hover:0 14px 30px rgba(20,45,90,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --bs-primary:#1F5FE0;
  --bs-primary-rgb:31,95,224;
  --bs-body-bg:#F6F9FD;
  --bs-body-color:#16233A;
  --bs-link-color:#1F5FE0;
  --bs-link-hover-color:#1749B8;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text);margin:0;font-weight:700;line-height:1.3;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;}
:focus-visible{outline:3px solid rgba(31,95,224,.35);outline-offset:2px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Buttons ---------- */
.btn{
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{
  --bs-btn-bg:#1F5FE0;--bs-btn-border-color:#1F5FE0;
  --bs-btn-hover-bg:#1749B8;--bs-btn-hover-border-color:#1749B8;
  --bs-btn-active-bg:#1749B8;--bs-btn-active-border-color:#1749B8;
  --bs-btn-focus-shadow-rgb:31,95,224;
  --bs-btn-color:#fff;--bs-btn-hover-color:#fff;--bs-btn-active-color:#fff;
  background-color:var(--brand);border-color:var(--brand);color:#fff;
}
.btn-primary:hover,.btn-primary:focus{background-color:var(--brand-dark);border-color:var(--brand-dark);color:#fff;}
.btn-outline-primary{
  --bs-btn-color:#1F5FE0;--bs-btn-border-color:#1F5FE0;
  --bs-btn-hover-bg:#EAF1FE;--bs-btn-hover-border-color:#1749B8;--bs-btn-hover-color:#1749B8;
  --bs-btn-active-bg:#EAF1FE;--bs-btn-active-border-color:#1749B8;--bs-btn-active-color:#1749B8;
  --bs-btn-focus-shadow-rgb:31,95,224;
  background:#fff;border-color:var(--brand);color:var(--brand);
}
.btn-outline-primary:hover,.btn-outline-primary:focus{background:var(--brand-soft);border-color:var(--brand-dark);color:var(--brand-dark);}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-accent:hover,.btn-accent:focus{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;}
.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2);padding:0 12px;}
.btn-ghost:hover{color:var(--brand);background:var(--brand-soft);}
.btn-lg-x{height:48px;padding:0 26px;font-size:16px;}
.nav-btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-icon{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-icon svg{width:22px;height:22px;display:block;}
.brand-text{display:block;font-size:18px;font-weight:700;line-height:1.2;color:inherit;}
.brand-sub{display:block;font-size:12px;color:var(--text-3);line-height:1.3;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:8px 0;
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-14px;height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:scaleX(0);
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand);font-weight:600;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{position:relative;width:220px;}
.nav-search input{
  width:100%;height:40px;border-radius:999px;
  border:1px solid var(--line);
  background:#F6F9FD;
  padding:0 40px 0 16px;
  font-size:14px;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(31,95,224,.14);
}
.nav-search i{position:absolute;right:15px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px;pointer-events:none;}
.nav-toggle{
  display:none;margin-left:auto;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--text);
  align-items:center;justify-content:center;font-size:16px;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,26,54,.4);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
  z-index:1050;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;width:300px;max-width:86vw;height:100%;
  background:#fff;z-index:1060;
  transform:translateX(100%);
  transition:transform .24s ease;
  padding:20px 20px 28px;
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
  box-shadow:-8px 0 30px rgba(11,26,54,.12);
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-search{position:relative;}
.drawer-search input{
  width:100%;height:44px;border-radius:999px;border:1px solid var(--line);
  background:#F6F9FD;padding:0 40px 0 16px;font-size:14px;color:var(--text);
}
.drawer-search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,95,224,.14);}
.drawer-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line);padding-top:14px;}
.drawer-links a{
  font-size:15px;color:var(--text-2);padding:11px 12px;border-radius:10px;
  transition:background-color .18s ease,color .18s ease;
}
.drawer-links a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-links a.is-active{color:var(--brand);font-weight:600;background:var(--brand-soft);}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
.drawer-actions .btn{width:100%;}

/* ---------- Page head ---------- */
.page-head{
  background-image:linear-gradient(rgba(255,255,255,.94),rgba(255,255,255,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:30px 0 44px;
}
.breadcrumb-x{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb-x a{color:var(--text-3);}
.breadcrumb-x a:hover{color:var(--brand);}
.breadcrumb-x .sep{color:#C6D2E4;}
.breadcrumb-x .current{
  color:var(--text-2);
  max-width:520px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-hero{max-width:860px;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:0;
}
.article-hero h1{
  font-size:40px;
  line-height:1.32;
  margin:16px 0 18px;
  font-weight:700;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:18px;
  font-size:13px;color:var(--text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{font-size:12px;color:#B4C1D6;}

/* ---------- Article body ---------- */
.article-section{padding:56px 0 8px;}
.article-shell{max-width:760px;margin:0 auto;}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:21px;
  font-weight:700;
  color:var(--text);
  margin:2em 0 .8em;
  padding-left:14px;
  line-height:1.45;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  background:var(--brand);border-radius:2px;
}
.article-body h3{
  font-size:18px;font-weight:600;color:var(--text);
  margin:1.7em 0 .7em;
  padding-bottom:9px;
  border-bottom:1px solid var(--line);
}
.article-body h4{font-size:16px;font-weight:600;color:var(--text);margin:1.4em 0 .6em;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-dark);}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em;}
.article-body li{margin-bottom:8px;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:600;}
.article-body blockquote{
  margin:1.4em 0;
  padding:16px 22px;
  background:var(--bg-alt);
  border-left:3px solid var(--brand);
  border-radius:0 10px 10px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--radius-img);
  margin:1.4em auto;
  height:auto;
}
.article-body figure{margin:1.4em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  display:block;max-width:100%;overflow-x:auto;
  width:100%;border-collapse:collapse;
  font-size:15px;margin:1.4em 0;
  border-radius:12px;
  background:#fff;
  border:1px solid var(--line-2);
}
.article-body th,.article-body td{
  padding:12px 16px;
  text-align:left;
  border-bottom:1px solid var(--line-2);
  white-space:nowrap;
}
.article-body thead th{background:var(--bg-alt);color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFCFF;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* ---------- Empty state ---------- */
.empty-state{
  background:#fff;
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  padding:64px 32px;
  text-align:center;
  box-shadow:var(--shadow-card);
}
.empty-state i{font-size:34px;color:#C6D2E4;}
.empty-state h2{font-size:22px;margin:18px 0 10px;}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:24px;}

/* ---------- Inline CTA ---------- */
.article-cta{
  margin-top:52px;
  background:var(--brand-soft);
  border-radius:16px;
  padding:32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.article-cta h3{font-size:20px;margin-bottom:6px;}
.article-cta p{font-size:14px;color:var(--text-2);}
.article-cta .btn{flex-shrink:0;}

/* ---------- Related ---------- */
.related{padding:64px 0 72px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:28px;flex-wrap:wrap;
}
.section-head h2{font-size:26px;}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:8px;}
.section-head .more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.section-head .more:hover{gap:10px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card-x{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  color:inherit;
  transition:transform .2s ease,box-shadow .2s ease;
  height:100%;
}
.card-x:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);color:inherit;}
.card-x .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);}
.card-x .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card-x:hover .thumb img{transform:scale(1.03);}
.card-x .card-body-x{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-x h3{
  font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.card-x:hover h3{color:var(--brand);}
.card-x .card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.card-x .card-meta i{transition:transform .2s ease;}
.card-x:hover .card-meta i{transform:translateX(3px);color:var(--brand);}

/* ---------- Back links ---------- */
.back-links{padding:0 0 88px;}
.back-links .inner{
  display:flex;flex-wrap:wrap;gap:14px;
  justify-content:center;
}

/* ---------- Footer ---------- */
.site-footer{background:#101F38;color:#B9C6DA;}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding:64px 0 42px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-icon{background:rgba(255,255,255,.08);color:#7FA6F5;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-sub{color:#8093AE;}
.footer-desc{font-size:14px;line-height:1.85;color:#9CB0CA;max-width:360px;}
.footer-social{display:flex;gap:12px;margin-top:22px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.07);color:#B9C6DA;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.footer-social a:hover{background:var(--brand);color:#fff;transform:translateY(-2px);}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col span{font-size:14px;color:#9CB0CA;line-height:1.7;}
.footer-col a:hover{color:#7FA6F5;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:#8093AE;
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:#8093AE;}
.footer-bottom a:hover{color:#7FA6F5;}

/* ---------- Modal & form ---------- */
.modal-content{border:0;border-radius:16px;box-shadow:0 24px 60px rgba(11,26,54,.18);overflow:hidden;}
.modal-header{border-bottom:1px solid var(--line);padding:22px 24px;align-items:center;}
.modal-title{font-size:20px;font-weight:700;color:var(--text);}
.modal-header .btn-close{box-shadow:none;opacity:.5;}
.modal-header .btn-close:hover{opacity:.9;}
.modal-body{padding:22px 24px 26px;}
.form-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.form-control,.form-select{
  height:46px;border-radius:10px;
  border:1px solid #D9E3F0;
  font-size:15px;color:var(--text);
  background-color:#fff;
  box-shadow:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-control::placeholder{color:#AEBACE;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,95,224,.14);
}
textarea.form-control{height:auto;min-height:98px;padding-top:12px;line-height:1.7;}
.form-hint{font-size:13px;color:var(--text-3);margin-top:6px;}
.form-check-label{font-size:13px;color:var(--text-3);line-height:1.7;}
.form-check-input{width:16px;height:16px;margin-top:.35em;border-color:#C6D2E4;}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(31,95,224,.16);border-color:var(--brand);}
.tip-bar{
  border-radius:10px;padding:12px 16px;font-size:14px;
  background:rgba(15,181,160,.1);color:var(--accent-dark);
  border:1px solid rgba(15,181,160,.24);
  margin-bottom:16px;
}
.tip-bar.warn{background:rgba(255,176,32,.12);color:#9A6600;border-color:rgba(255,176,32,.32);}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .article-hero h1{font-size:36px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:56px;gap:16px;}
  .article-hero h1{font-size:30px;}
  .page-head{padding:24px 0 34px;}
  .article-section{padding:44px 0 8px;}
  .related{padding:52px 0 56px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 34px;}
  .article-cta{flex-direction:column;align-items:flex-start;padding:26px;}
  .article-cta .btn{width:100%;}
  .back-links{padding-bottom:64px;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .container-x{padding:0 16px;}
  .article-hero h1{font-size:27px;margin:14px 0 16px;}
  .breadcrumb-x{font-size:12.5px;margin-bottom:16px;}
  .breadcrumb-x .current{max-width:220px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:19px;}
  .article-body h3{font-size:17px;}
  .section-head h2{font-size:22px;}
  .article-cta{margin-top:40px;padding:22px;}
  .article-cta h3{font-size:18px;}
  .empty-state{padding:48px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .related-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .article-meta{gap:12px;font-size:12.5px;}
  .brand-sub{display:none;}
  .back-links .inner{flex-direction:column;}
  .back-links .inner .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --bs-primary:#1F5FE0;
  --bs-primary-rgb:31,95,224;
  --bs-body-bg:#F6F9FD;
  --bs-body-color:#16233A;
  --bs-link-color:#1F5FE0;
  --bs-link-hover-color:#1749B8;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  --brand:#1F5FE0;
  --brand-dark:#1749B8;
  --brand-soft:#EAF1FE;
  --accent:#0FB5A0;
  --accent-dark:#0A9A88;
  --amber:#FFB020;
  --page:#F6F9FD;
  --card:#FFFFFF;
  --alt:#EFF4FB;
  --text:#16233A;
  --muted:#5A6A85;
  --weak:#93A1B8;
  --line:#E3EAF4;
  --line-soft:#E9EFF8;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 2px 8px rgba(20,45,90,.06);
  --sh-hover:0 14px 30px rgba(20,45,90,.12);
  --sh-modal:0 24px 60px rgba(11,26,54,.18);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,95,224,.28);border-radius:8px;}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section-alt{background:var(--alt);}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:0 0 0 3px rgba(31,95,224,.25);
  height:44px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-1px);}
.btn-outline-primary{background:#fff;border-color:var(--brand);color:var(--brand);}
.btn-outline-primary:hover,.btn-outline-primary:focus{background:var(--brand-soft);border-color:var(--brand-dark);color:var(--brand-dark);transform:translateY(-1px);}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-accent:hover,.btn-accent:focus{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--brand-soft);color:var(--brand);}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none;}
.brand-icon{
  width:36px;height:36px;flex:none;
  border-radius:10px;
  background:var(--brand-soft);
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.brand-icon svg{width:22px;height:22px;}
.brand-text{display:block;font-size:18px;font-weight:700;line-height:1.15;color:var(--text);}
.brand-sub{display:block;font-size:12px;line-height:1.3;color:var(--weak);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-19px;
  height:2px;background:var(--brand);
  transform:scaleX(0);
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;width:220px;}
.nav-search input{
  width:100%;height:40px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--page);
  padding:0 38px 0 16px;
  font-size:14px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:var(--weak);}
.nav-search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(31,95,224,.15);}
.nav-search i{position:absolute;right:15px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--weak);pointer-events:none;}
.nav-btn-sm{height:38px;padding:0 16px;font-size:14px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;margin-left:auto;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;color:var(--text);font-size:16px;
  align-items:center;justify-content:center;
}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:1055;
  background:rgba(11,26,54,.4);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:-320px;z-index:1060;
  width:300px;height:100%;
  background:#fff;
  padding:20px;
  display:flex;flex-direction:column;gap:18px;
  transition:right .24s ease;
  box-shadow:-12px 0 32px rgba(11,26,54,.14);
  overflow-y:auto;
}
.drawer.is-open{right:0;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--muted);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:12px 14px;border-radius:10px;
  color:var(--muted);font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}

/* ---------- 顶部横幅 ---------- */
.page-banner{
  position:relative;
  min-height:280px;
  display:flex;align-items:center;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:rgba(31,95,224,.62);
}
.banner-inner{position:relative;z-index:2;padding:56px 0;width:100%;}
.crumb{font-size:13px;color:rgba(255,255,255,.82);margin-bottom:14px;display:flex;gap:8px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;}
.crumb span.sep{opacity:.6;}
.page-banner h1{
  font-size:44px;font-weight:700;line-height:1.3;
  color:#fff;max-width:860px;margin-bottom:12px;
}
.banner-sub{font-size:17px;color:rgba(255,255,255,.92);max-width:760px;line-height:1.7;}

/* ---------- 筛选标签 ---------- */
.filter-bar{padding-top:28px;}
.filter-pills{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;color:var(--muted);
  font-size:14px;
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}

/* ---------- 栏目标题 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{font-size:32px;font-weight:700;}
.section-sub{font-size:15px;color:var(--muted);margin-top:10px;max-width:720px;}
.link-more{font-size:15px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:8px;}
.link-more i{font-size:12px;transition:transform .2s ease;}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 卡片墙 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.topic-card{
  background:var(--card);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#DCE6F6;}
.topic-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--alt);}
.topic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.topic-card:hover .topic-thumb img{transform:scale(1.03);}
.topic-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge-soft{
  align-self:flex-start;
  background:var(--brand-soft);color:var(--brand);
  border-radius:var(--r-pill);
  padding:4px 11px;font-size:12px;font-weight:600;line-height:1.6;
}
.topic-title{
  font-size:17px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.topic-title a{color:var(--text);}
.topic-card:hover .topic-title a{color:var(--brand);}
.topic-desc{
  font-size:14px;color:var(--muted);line-height:1.75;
  flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.topic-foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--weak);
  border-top:1px solid var(--line);
  padding-top:12px;
}
.topic-foot i{font-size:12px;color:var(--weak);transition:transform .2s ease,color .2s ease;}
.topic-card:hover .topic-foot i{transform:translateX(4px);color:var(--brand);}

/* ---------- 分页 ---------- */
.pager{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:44px;flex-wrap:wrap;}
.pager a,.pager span{
  min-width:40px;height:40px;padding:0 12px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--muted);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.pager a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.pager .is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.pager .is-disabled{color:var(--weak);background:var(--alt);border-color:var(--line);}

/* ---------- 排行 & 标签 ---------- */
.rank-wrap{display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:start;}
.rank-list{display:flex;flex-direction:column;gap:12px;}
.rank-item{
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line-soft);border-radius:12px;
  padding:16px 20px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.rank-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.rank-no{
  width:32px;height:32px;flex:none;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
}
.rank-item:nth-child(1) .rank-no{background:var(--brand);color:#fff;}
.rank-item:nth-child(2) .rank-no{background:var(--accent);color:#fff;}
.rank-main{flex:1;min-width:0;}
.rank-main a{font-size:16px;font-weight:600;color:var(--text);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.rank-main a:hover{color:var(--brand);}
.rank-main p{font-size:13px;color:var(--weak);margin-top:4px;}
.rank-count{
  font-size:12px;color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:4px 12px;flex:none;
}
.side-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:24px;
}
.side-card h3{font-size:18px;margin-bottom:16px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:var(--page);border:1px solid var(--line);
  font-size:13px;color:var(--muted);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:#fff;}
.tag .count{font-size:11px;color:var(--brand);background:var(--brand-soft);border-radius:var(--r-pill);padding:1px 7px;}
.side-note{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--weak);line-height:1.9;}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--brand-soft);
  border-radius:16px;
  padding:32px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
}
.cta-bar h2{font-size:24px;font-weight:700;}
.cta-bar p{font-size:15px;color:var(--muted);margin-top:8px;}
.cta-actions{display:flex;gap:12px;flex:none;}

/* ---------- 隐私说明 ---------- */
.privacy-bar{
  border-top:1px solid var(--line);
  padding:24px 0;
  font-size:13px;
  color:var(--weak);
  line-height:1.9;
  text-align:center;
}
.privacy-bar a{color:var(--muted);text-decoration:underline;text-underline-offset:3px;}
.privacy-bar a:hover{color:var(--brand);}

/* ---------- 页脚 ---------- */
.site-footer{background:#101F38;color:#B9C6DA;padding-top:56px;margin-top:64px;}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.site-footer .brand-icon{background:rgba(255,255,255,.08);color:#fff;}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-sub{color:rgba(185,198,218,.7);}
.footer-desc{font-size:14px;line-height:1.9;color:#93A1B8;max-width:380px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.07);color:#B9C6DA;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.footer-social a:hover{background:var(--brand);color:#fff;transform:translateY(-2px);}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;font-size:14px;color:#93A1B8;}
.footer-col a{color:#93A1B8;transition:color .2s ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8CA6;
}
.footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom-links a{color:#7C8CA6;}
.footer-bottom-links a:hover{color:#fff;}

/* ---------- Modal ---------- */
.modal-content{
  border:none;border-radius:16px;box-shadow:var(--sh-modal);
}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px;}
.modal-title{font-size:20px;font-weight:700;}
.modal-body{padding:24px 26px;}
.modal-footer{border-top:1px solid var(--line);padding:16px 26px;}
.form-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.form-control,.form-select{
  height:46px;
  border:1px solid #D9E3F0;
  border-radius:var(--r-btn);
  font-size:15px;color:var(--text);
  padding:0 14px;
  background-color:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,95,224,.16);
  outline:none;
}
.form-control::placeholder{color:var(--weak);}
.form-hint{font-size:13px;color:var(--weak);margin-top:6px;}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(31,95,224,.2);border-color:var(--brand);}
.form-check-label{font-size:13px;color:var(--weak);line-height:1.7;}
.form-check-label a{color:var(--muted);text-decoration:underline;text-underline-offset:3px;}
.form-alert{
  display:none;
  border-radius:10px;
  padding:10px 14px;
  font-size:14px;
  margin-top:16px;
}
.form-alert.is-ok{display:block;background:rgba(15,181,160,.1);color:var(--accent-dark);border:1px solid rgba(15,181,160,.3);}
.form-alert.is-err{display:block;background:rgba(255,176,32,.12);color:#A56A00;border:1px solid rgba(255,176,32,.4);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rank-wrap{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:991px){
  .nav-links,.nav-search{display:none;}
  .nav-right .nav-btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{height:56px;}
  .page-banner{min-height:220px;}
  .banner-inner{padding:40px 0;}
  .page-banner h1{font-size:32px;}
  .banner-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .footer-top{grid-template-columns:1fr 1fr;padding-bottom:32px;}
  .footer-desc{max-width:none;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container-x{padding:0 16px;}
  .section{padding:48px 0;}
  .page-banner h1{font-size:28px;}
  .banner-sub{font-size:15px;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .page-banner h1{font-size:24px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .pager a,.pager span{min-width:36px;height:36px;font-size:13px;}
  .rank-item{padding:14px 16px;gap:12px;}
  .rank-main a{white-space:normal;}
}

/* roulang page: category2 */
:root{
  --bs-primary:#1F5FE0;
  --bs-primary-rgb:31,95,224;
  --bs-body-bg:#F6F9FD;
  --bs-body-color:#16233A;
  --bs-link-color:#1F5FE0;
  --bs-link-hover-color:#1749B8;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  --c-primary:#1F5FE0;
  --c-primary-dark:#1749B8;
  --c-primary-soft:#EAF1FE;
  --c-accent:#0FB5A0;
  --c-accent-dark:#0A9A88;
  --c-amber:#FFB020;
  --c-bg:#F6F9FD;
  --c-alt:#EFF4FB;
  --c-card:#FFFFFF;
  --c-text:#16233A;
  --c-text-2:#5A6A85;
  --c-text-3:#93A1B8;
  --c-line:#E3EAF4;
  --c-line-soft:#E9EFF8;
  --c-foot:#101F38;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --sh-card:0 2px 8px rgba(20,45,90,.06);
  --sh-hover:0 14px 30px rgba(20,45,90,.12);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,95,224,.25);border-radius:6px;}

.container-x{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.nav-inner{display:flex;align-items:center;gap:26px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-text);flex:0 0 auto;}
.brand:hover{color:var(--c-text);}
.brand-icon{width:24px;height:24px;color:var(--c-primary);display:inline-flex;flex:0 0 24px;}
.brand-icon svg{width:24px;height:24px;display:block;}
.brand-text{display:block;font-size:18px;font-weight:700;line-height:1.15;}
.brand-sub{display:block;font-size:12px;color:var(--c-text-3);line-height:1.2;font-weight:400;}

.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--c-text-2);
  padding:20px 0;
  display:inline-block;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--c-primary);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--c-primary);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}

.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{position:relative;width:220px;}
.nav-search input{
  width:100%;height:38px;border-radius:999px;border:1px solid #D9E3F0;
  background:#F6F9FD;font-size:14px;color:var(--c-text);
  padding:0 38px 0 16px;transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,95,224,.15);}
.nav-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--c-text-3);pointer-events:none;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s;
  text-decoration:none;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,95,224,.24);}
.btn-outline-primary{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline-primary:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:var(--c-primary-dark);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,181,160,.24);}
.btn-ghost{background:transparent;color:var(--c-text-2);border-color:transparent;}
.btn-ghost:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-btn-sm{height:38px;padding:0 16px;font-size:14px;}

.nav-toggle{
  display:none;width:40px;height:40px;margin-left:auto;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:10px;background:#fff;
  color:var(--c-text);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:#fff;z-index:1200;transform:translateX(102%);
  transition:transform .24s ease;padding:20px;overflow-y:auto;
  box-shadow:-12px 0 40px rgba(11,26,54,.16);
  display:flex;flex-direction:column;gap:18px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,26,54,.4);
  opacity:0;visibility:hidden;transition:opacity .24s ease;z-index:1150;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text-2);cursor:pointer;font-size:15px;
}
.drawer-search{position:relative;}
.drawer-search input{
  width:100%;height:42px;border-radius:999px;border:1px solid #D9E3F0;
  background:#F6F9FD;padding:0 40px 0 16px;font-size:14px;
}
.drawer-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,95,224,.15);}
.drawer-search i{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--c-text-3);font-size:13px;}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--c-line);}
.drawer-links a{
  padding:14px 4px;font-size:15px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.drawer-links a.is-active{color:var(--c-primary);font-weight:600;}
.drawer-cta{display:flex;flex-direction:column;gap:10px;margin-top:4px;}

/* ---------- page head ---------- */
.page-head{background:#fff;border-bottom:1px solid var(--c-line);padding:40px 0 36px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:16px;flex-wrap:wrap;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C7D3E5;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;margin-bottom:14px;
}
.page-head h1{font-size:clamp(30px,4.2vw,44px);font-weight:700;max-width:900px;}
.page-sub{margin-top:14px;font-size:17px;color:var(--c-text-2);max-width:820px;line-height:1.8;}
.head-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;}
.head-stat{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;background:#F6F9FD;border:1px solid var(--c-line-soft);
  border-radius:999px;font-size:13px;color:var(--c-text-2);
}
.head-stat b{color:var(--c-text);font-weight:600;}
.head-stat i{color:var(--c-accent);font-size:12px;}

/* ---------- guide layout ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--c-alt);}
.guide-grid{display:grid;grid-template-columns:240px 1fr;gap:40px;align-items:start;}

.toc-card{
  background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-card);
}
.guide-toc{position:sticky;top:88px;}
.toc-title{font-size:12px;font-weight:600;color:var(--c-text-3);letter-spacing:.08em;margin-bottom:10px;}
.toc-list{display:flex;flex-direction:column;}
.toc-list a{
  display:block;position:relative;
  padding:9px 10px 9px 14px;font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s,border-color .18s,background .18s;
}
.toc-list a:hover{color:var(--c-primary);background:#F6F9FD;}
.toc-list a.is-current{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);background:var(--c-primary-soft);}
.toc-note{margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:8px;}
.toc-note p{font-size:12px;color:var(--c-text-3);line-height:1.7;}
.toc-note a{font-size:13px;font-weight:600;}

.guide-intro{
  background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);margin-bottom:28px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:center;
}
.guide-intro h2{font-size:20px;margin-bottom:10px;}
.guide-intro p{font-size:15px;color:var(--c-text-2);line-height:1.85;}
.guide-intro img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.guide-intro .intro-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.intro-tag{
  padding:5px 12px;border-radius:999px;font-size:12px;
  background:#EFF4FB;color:var(--c-text-2);border:1px solid var(--c-line-soft);
}

.tl-list{position:relative;}
.tl-list::before{
  content:"";position:absolute;left:15px;top:14px;bottom:26px;width:1px;background:var(--c-line);
}
.tl-item{position:relative;display:flex;gap:20px;padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid var(--c-line);}
.tl-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0;}
.tl-dot{
  position:relative;z-index:1;flex:0 0 32px;width:32px;height:32px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.tl-body{flex:1;min-width:0;}
.tl-body h2{font-size:20px;margin-bottom:8px;}
.tl-item:hover .tl-body h2{color:var(--c-primary);}
.tl-text{font-size:15px;color:var(--c-text-2);line-height:1.85;margin-bottom:12px;}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--c-text-3);}
.tag{
  display:inline-block;padding:3px 10px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12px;font-weight:600;
}
.tag-accent{background:rgba(15,181,160,.12);color:var(--c-accent-dark);}

.tl-figure{margin:28px 0;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-card);}
.tl-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;margin-bottom:12px;}
.tl-figure figcaption{font-size:13px;color:var(--c-text-3);text-align:center;}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-wrap h2{font-size:clamp(24px,3vw,32px);margin-bottom:8px;}
.faq-lead{font-size:16px;color:var(--c-text-2);margin-bottom:26px;}
.accordion-item{background:transparent;border:none;border-bottom:1px solid var(--c-line);}
.accordion-item:first-of-type{border-top:1px solid var(--c-line);}
.accordion-button{
  position:relative;width:100%;background:transparent;border:none;
  padding:20px 46px 20px 4px;font-size:16px;font-weight:600;color:var(--c-text);
  box-shadow:none;border-radius:0;transition:color .2s,background .2s;
}
.accordion-button:not(.collapsed){background:#fff;color:var(--c-primary);box-shadow:none;}
.accordion-button:focus{box-shadow:none;}
.accordion-button::after{display:none;}
.accordion-button::before{
  content:"+";position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;line-height:1;color:var(--c-primary);
}
.accordion-button:not(.collapsed)::before{content:"–";}
.accordion-body{padding:0 60px 22px 4px;font-size:15px;line-height:1.85;color:var(--c-text-2);background:#fff;}
.accordion-body strong{color:var(--c-text);font-weight:600;}

/* ---------- cta ---------- */
.cta-band{
  background:var(--c-primary-soft);border-radius:16px;padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--c-text-2);}
.cta-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.cta-link{font-size:15px;font-weight:600;color:var(--c-primary);}
.cta-link:hover{color:var(--c-primary-dark);}

/* ---------- footer ---------- */
.site-footer{background:var(--c-foot);color:#C6D2E4;margin-top:72px;padding:56px 0 28px;font-size:14px;}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-icon{color:#5C8BF0;}
.footer-brand .brand-text{color:#fff;font-size:18px;font-weight:700;}
.footer-brand .brand-sub{color:#8899B4;}
.footer-desc{color:#9FB0C8;line-height:1.85;max-width:380px;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);color:#C6D2E4;font-size:15px;transition:background .2s,color .2s;
}
.footer-social a:hover{background:var(--c-primary);color:#fff;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#9FB0C8;}
.footer-col a:hover{color:#7FA6F2;}
.footer-col span{color:#9FB0C8;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:20px;
  font-size:13px;color:#8899B4;
}

/* ---------- modal ---------- */
.modal-content{border:none;border-radius:16px;box-shadow:0 24px 60px rgba(11,26,54,.18);}
.modal-header{border-bottom:1px solid var(--c-line);padding:20px 24px;}
.modal-title{font-size:20px;font-weight:600;}
.modal-body{padding:24px;}
.form-label{font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:6px;}
.form-control,.form-select{
  height:46px;border-radius:var(--r-input);border:1px solid #D9E3F0;
  font-size:15px;color:var(--c-text);background:#fff;
}
.form-control::placeholder{color:var(--c-text-3);}
textarea.form-control{height:auto;min-height:96px;padding-top:12px;}
.form-control:focus,.form-select:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,95,224,.15);}
.form-hint{font-size:13px;color:var(--c-text-3);margin-top:6px;}
.form-check-label{font-size:13px;color:var(--c-text-2);}
.form-check-input:checked{background-color:var(--c-primary);border-color:var(--c-primary);}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(31,95,224,.2);}
.btn-submit{width:100%;height:48px;font-size:16px;}
.form-feedback{
  display:none;margin-top:16px;padding:12px 16px;border-radius:10px;
  font-size:14px;background:rgba(15,181,160,.12);color:var(--c-accent-dark);
}
.form-feedback.is-show{display:block;}

@media (max-width:1199.98px){
  .container-x{padding:0 22px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:52px 0;}
  .guide-grid{grid-template-columns:1fr;gap:24px;}
  .guide-toc{position:static;}
  .toc-list{flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .toc-list a{
    border-left:none;border:1px solid var(--c-line);border-radius:999px;
    padding:8px 14px;white-space:nowrap;background:#fff;
  }
  .toc-list a.is-current{border-color:var(--c-primary);background:var(--c-primary-soft);}
  .toc-note{display:none;}
  .guide-intro{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767.98px){
  .page-head{padding:30px 0 28px;}
  .page-sub{font-size:15.5px;}
  .tl-item{gap:14px;}
  .tl-body h2{font-size:18px;}
  .accordion-body{padding-right:20px;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .section{padding:44px 0;}
  .guide-intro{padding:20px;}
  .cta-band{padding:24px;}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%;}
  .cta-actions .btn{width:100%;}
  .head-stat{font-size:12px;padding:7px 13px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category3 */
:root{
  --bs-primary: #1F5FE0;
  --bs-primary-rgb: 31,95,224;
  --bs-body-bg: #F6F9FD;
  --bs-body-color: #16233A;
  --bs-link-color: #1F5FE0;
  --bs-link-hover-color: #1749B8;
  --bs-border-radius: 12px;
  --bs-border-radius-lg: 14px;
  --bs-border-radius-sm: 10px;
  --bs-font-sans-serif: "Inter","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;

  --primary:#1F5FE0;
  --primary-dark:#1749B8;
  --primary-soft:#EAF1FE;
  --accent:#0FB5A0;
  --accent-dark:#0A9A88;
  --amber:#FFB020;
  --bg:#F6F9FD;
  --bg-alt:#EFF4FB;
  --card:#FFFFFF;
  --ink:#16233A;
  --ink-2:#5A6A85;
  --ink-3:#93A1B8;
  --line:#E3EAF4;
  --line-soft:#E9EFF8;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-card:0 2px 8px rgba(20,45,90,.06);
  --sh-hover:0 14px 30px rgba(20,45,90,.12);
  --font-sans:"Inter","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-dark)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,95,224,.25)}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.narrow{width:100%;max-width:880px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  cursor:pointer;text-decoration:none;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,95,224,.25)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-dark);transform:translateY(0)}
.btn-outline-primary{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline-primary:hover{background:var(--primary-soft);color:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--ink-2);padding:0 12px}
.btn-ghost:hover{color:var(--primary);background:var(--primary-soft)}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.nav-btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-btn)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-icon{
  width:36px;height:36px;border-radius:10px;flex:0 0 36px;
  background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-icon svg{width:21px;height:21px}
.brand-text{display:block;font-size:18px;font-weight:700;line-height:1.15;color:var(--ink)}
.brand-sub{display:block;font-size:12px;color:var(--ink-3);line-height:1.3;font-weight:400}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-links a{position:relative;font-size:15px;color:var(--ink-2);padding:8px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--primary);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-search{position:relative;width:220px}
.nav-search input{
  width:100%;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--bg);
  padding:0 38px 0 16px;font-size:14px;color:var(--ink);
  outline:none;transition:border-color .2s,box-shadow .2s,background-color .2s;
}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-search input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(31,95,224,.15)}
.nav-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--ink-3);pointer-events:none}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;
  align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

/* 移动抽屉 */
.nav-mask{
  position:fixed;inset:0;background:rgba(11,26,54,.4);z-index:1050;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;z-index:1060;
  background:#fff;padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(100%);transition:transform .24s ease;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--ink-2);cursor:pointer}
.drawer-close:hover{color:var(--primary);border-color:var(--primary)}
.drawer-search{position:relative}
.drawer-search input{
  width:100%;height:44px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--bg);padding:0 40px 0 16px;font-size:14px;outline:none;
}
.drawer-search input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(31,95,224,.15)}
.drawer-search i{position:absolute;right:15px;top:50%;transform:translateY(-50%);color:var(--ink-3);font-size:13px}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{
  padding:13px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);
}
.drawer-links a:hover{background:var(--bg);color:var(--primary)}
.drawer-links a.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.drawer-actions .btn{width:100%}

/* ---------- 页面头部 ---------- */
.help-head{padding:72px 0 8px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:600;letter-spacing:.5px;
}
.help-head h1{
  margin-top:18px;font-size:44px;font-weight:700;line-height:1.25;color:var(--ink);
}
.help-head .lead{
  margin:14px auto 0;max-width:620px;
  font-size:17px;line-height:1.75;color:var(--ink-2);
}
.help-search{
  position:relative;display:flex;align-items:center;gap:8px;
  max-width:580px;margin:32px auto 0;height:48px;padding:0 6px 0 46px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--sh-card);transition:border-color .2s,box-shadow .2s;
}
.help-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,95,224,.15)}
.help-search > i{position:absolute;left:19px;top:50%;transform:translateY(-50%);color:var(--ink-3);font-size:15px}
.help-search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;
  font-size:15px;color:var(--ink);
}
.help-search input::placeholder{color:var(--ink-3)}
.help-search .btn{height:38px;padding:0 20px;border-radius:var(--r-pill);flex:0 0 auto;font-size:14px}
.topic-pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:24px}
.topic-pills a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--ink-2);transition:all .2s ease;
}
.topic-pills a:first-child{background:var(--primary);border-color:var(--primary);color:#fff}
.topic-pills a:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.topic-pills a:first-child:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff}

/* ---------- 板块基础 ---------- */
.section{padding:64px 0}
.section-alt{background:var(--bg-alt)}
.section-title{font-size:28px;color:var(--ink)}
.section-sub{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.8}

/* ---------- 分组 FAQ ---------- */
.help-group{padding-top:40px}
.help-group:first-child{padding-top:0}
.help-group h2{
  display:flex;align-items:center;gap:10px;
  font-size:22px;font-weight:700;color:var(--ink);
}
.help-group h2::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--primary);flex:0 0 4px}
.group-desc{margin:8px 0 14px 14px;font-size:14px;color:var(--ink-3);line-height:1.7}

.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-item:first-of-type{border-top:1px solid var(--line)}
.accordion-button{
  display:flex;align-items:center;
  width:100%;padding:18px 0;background:transparent;border:0;border-radius:0;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;box-shadow:none;
  transition:color .2s ease,background-color .2s ease;
}
.accordion-button::after{display:none !important}
.accordion-button::before{
  content:"+";
  flex:0 0 22px;width:22px;height:22px;margin-right:12px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:6px;background:var(--primary-soft);color:var(--primary);
  font-size:16px;font-weight:700;line-height:1;transition:background-color .2s,color .2s;
}
.accordion-button:hover{color:var(--primary)}
.accordion-button:not(.collapsed){color:var(--primary);background:#F6F9FD;box-shadow:none}
.accordion-button:not(.collapsed)::before{content:"−";background:var(--primary);color:#fff}
.accordion-button:focus{box-shadow:none;border:0}
.accordion-body{
  padding:2px 0 20px 34px;font-size:15px;line-height:1.85;color:var(--ink-2);
}
.accordion-body strong{color:var(--ink)}

/* ---------- 排查图文 ---------- */
.check-block{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-card);
}
.check-media img{width:100%;border-radius:var(--r-img);aspect-ratio:16/10;object-fit:cover}
.check-body h2{font-size:22px;color:var(--ink)}
.check-body p.check-sub{margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.7}
.step-list{margin-top:16px}
.step-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--ink-2);line-height:1.75;
}
.step-list li:last-child{border-bottom:0;padding-bottom:0}
.step-list .num{
  flex:0 0 24px;width:24px;height:24px;margin-top:3px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary);
  font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}

/* ---------- 联系方式 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
.contact-card{
  background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.contact-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D8E4F5}
.contact-card i{
  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:17px;
}
.contact-card .label{display:block;margin-top:14px;font-size:13px;color:var(--ink-3);letter-spacing:.4px}
.contact-card .value{display:block;margin-top:4px;font-size:17px;font-weight:600;color:var(--ink);word-break:break-all}
.contact-card .meta{display:block;margin-top:8px;font-size:13px;color:var(--ink-2);line-height:1.7}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:16px;
  padding:36px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cta-band::after{content:"";position:absolute;inset:0;background:rgba(23,73,184,.86)}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:24px;color:#fff}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.86);line-height:1.7;max-width:520px}
.cta-band .btn{background:#fff;color:var(--primary-dark);border-color:#fff;flex:0 0 auto}
.cta-band .btn:hover{background:#EAF1FE;color:var(--primary-dark);transform:translateY(-1px)}

/* ---------- 隐私说明条 ---------- */
.privacy-bar{
  display:flex;gap:10px;align-items:flex-start;
  width:100%;max-width:880px;margin:0 auto;padding:0 24px 48px;
  font-size:13px;line-height:1.75;color:var(--ink-3);
}
.privacy-bar i{margin-top:4px;color:var(--primary);font-size:13px;flex:0 0 auto}
.privacy-bar a{color:var(--primary)}
.privacy-bar a:hover{text-decoration:underline}

/* ---------- 表单 / Modal ---------- */
.modal-content{border:0;border-radius:16px;box-shadow:0 24px 60px rgba(11,26,54,.18)}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px}
.modal-title{font-size:20px;font-weight:700;color:var(--ink)}
.modal-body{padding:22px 24px 26px}
.modal-dialog{max-width:520px}
.btn-close:focus{box-shadow:0 0 0 3px rgba(31,95,224,.25)}
.field{margin-bottom:16px}
.field label{display:block;margin-bottom:7px;font-size:14px;font-weight:600;color:var(--ink)}
.form-control,.form-select{
  width:100%;height:46px;padding:0 14px;
  border:1px solid #D9E3F0;border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:15px;
  transition:border-color .2s,box-shadow .2s;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control::placeholder{color:var(--ink-3)}
.form-control:focus,.form-select:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,95,224,.15);outline:none;
}
.form-select{appearance:none;background-image:none;padding-right:38px;position:relative}
.hint{margin-top:6px;font-size:13px;color:var(--ink-3)}
.check-row{display:flex;align-items:flex-start;gap:9px;margin:4px 0 18px;font-size:13px;color:var(--ink-2);line-height:1.7}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--primary);flex:0 0 16px}
.btn-block-lg{width:100%;height:48px}
.form-feedback{
  margin-top:14px;padding:12px 14px;border-radius:10px;
  font-size:14px;line-height:1.7;
}
.form-feedback.is-ok{background:#E7F8F5;color:#0A7F70;border:1px solid #BFEDE6}
.form-feedback.is-bad{background:#FFF6E6;color:#8A5A00;border:1px solid #FFE3B2}

/* ---------- 页脚 ---------- */
.site-footer{background:#101F38;color:#B9C6DA;margin-top:0}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-icon{background:rgba(255,255,255,.1);color:#8FB4FF}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-sub{color:#8598B4}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:#9AABCD;max-width:360px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:#C6D3E8;font-size:15px;transition:all .2s ease;
}
.footer-social a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col li{font-size:14px;color:#9AABCD;line-height:1.7}
.footer-col a{color:#9AABCD}
.footer-col a:hover{color:#8FB4FF}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 30px;font-size:13px;color:#8598B4;
}
.footer-note{color:#6F82A0}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-search{width:180px}
  .nav-links{gap:22px}
}
@media (max-width:991.98px){
  .nav-links,.nav-right{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{height:56px}
  .help-head{padding:48px 0 4px}
  .help-head h1{font-size:32px}
  .help-head .lead{font-size:16px}
  .section{padding:48px 0}
  .check-block{grid-template-columns:1fr;gap:24px}
  .contact-grid{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media (min-width:992px){
  .nav-drawer,.nav-mask{display:none}
}
@media (max-width:767.98px){
  .container-x,.narrow{padding:0 16px}
  .help-head h1{font-size:30px}
  .help-head .lead{font-size:15.5px}
  .help-search{height:auto;flex-wrap:wrap;border-radius:16px;padding:12px 12px 12px 44px}
  .help-search > i{left:17px;top:26px;transform:none}
  .help-search input{width:100%;height:24px;flex:1 1 100%}
  .help-search .btn{width:100%}
  .section{padding:44px 0}
  .section-title{font-size:24px}
  .help-group h2{font-size:20px}
  .contact-grid{grid-template-columns:1fr}
  .check-block{padding:20px}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:21px}
  .cta-band .btn{width:100%}
  .accordion-body{padding-left:0}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-desc{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519.98px){
  .help-head h1{font-size:27px}
  .topic-pills a{height:32px;padding:0 13px;font-size:13px}
  .btn{height:42px;padding:0 18px;font-size:14px}
}