/* roulang page: index */
:root{
  --blue:#1B5FA8;
  --blue-dark:#12457C;
  --blue-deep:#0D3358;
  --blue-50:#EAF2FB;
  --blue-100:#C8DCF2;
  --orange:#FF6A3D;
  --teal:#12A594;
  --ink:#0E1B2A;
  --ink-2:#4A5A6E;
  --ink-3:#8A98A8;
  --line:#E4EAF2;
  --divide:#EFF3F8;
  --page:#F7F9FC;
  --white:#FFFFFF;
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(16,42,74,.06);
  --s2:0 6px 18px rgba(16,42,74,.08);
  --s3:0 18px 48px rgba(16,42,74,.14);
  --warn:#E0A100;
  --err:#D64545;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-card);}
a{color:var(--blue);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--blue-dark);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:700;color:var(--ink);line-height:1.35;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1240px;}}
.section{padding:80px 0;}
.section-head{margin-bottom:40px;}
.section-head h2{font-size:28px;line-height:1.35;}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:16px;max-width:780px;}
.eyebrow-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--blue-50);color:var(--blue);
  border-radius:var(--r-pill);
  padding:6px 14px;font-size:12px;font-weight:500;
}
.eyebrow-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:500;font-size:15px;}
.text-link i{font-style:normal;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(3px);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  border-radius:var(--r-btn);
  padding:13px 26px;
  font-size:15px;font-weight:500;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--blue-dark);color:#fff;box-shadow:var(--s2);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--s1);}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--blue-100);}
.btn-ghost:hover{background:var(--blue-50);color:var(--blue-dark);border-color:var(--blue-100);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{background:var(--orange);color:#fff;box-shadow:var(--s1);}
.btn-accent:hover{background:#E85B30;color:#fff;box-shadow:var(--s2);transform:translateY(-1px);}
.btn-block{width:100%;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--s2);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
  min-height:88px;
  transition:min-height .25s ease;
}
.site-header.is-scrolled .header-inner{min-height:64px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:32px;height:32px;border-radius:8px;
  background:linear-gradient(140deg,var(--blue) 0%,var(--blue-deep) 100%);
  color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.01em;}
.nav-main{display:flex;align-items:center;gap:8px;}
.nav-main a{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--r-btn);
}
.nav-main a:hover{color:var(--blue);background:var(--blue-50);}
.nav-main a.active{color:var(--blue);font-weight:600;}
.nav-main a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:2px;background:var(--blue);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;background:#fff;
  transform:translateX(100%);
  transition:transform .3s ease;
  padding:24px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
  font-size:20px;color:var(--ink-2);line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px;}
.drawer-nav a{padding:16px 12px;font-size:18px;color:var(--ink);border-radius:var(--r-btn);border-bottom:1px solid var(--divide);}
.drawer-nav a.active{color:var(--blue);font-weight:600;background:var(--blue-50);}

/* 首屏 */
.hero{
  position:relative;
  padding:80px 0;
  background-image:linear-gradient(180deg,rgba(247,249,252,.9) 0%,rgba(234,242,251,.92) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(27,95,168,.035) 0 2px,transparent 2px 10px);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero h1{font-size:40px;line-height:1.3;margin:20px 0 16px;}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:600px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 20px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;font-size:14px;color:var(--ink-3);}
.hero-trust span{display:inline-flex;align-items:center;}
.hero-trust span + span::before{content:"·";margin-right:10px;color:var(--blue-100);}
.hero-visual{position:relative;}
.hero-visual img{width:100%;height:360px;object-fit:cover;box-shadow:var(--s2);}
.float-card{
  position:absolute;right:-10px;bottom:-22px;
  background:#fff;border-radius:var(--r-card);box-shadow:var(--s3);
  padding:16px 20px;min-width:190px;
}
.float-card strong{display:block;font-size:24px;color:var(--blue);line-height:1.2;}
.float-card span{font-size:13px;color:var(--ink-3);}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.pain-item{
  display:flex;gap:18px;
  background:#fff;border-radius:var(--r-card);box-shadow:var(--s1);
  padding:24px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.pain-item:hover{box-shadow:var(--s2);transform:translateY(-2px);}
.pain-num{
  flex:0 0 44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--blue-100);color:var(--blue);
  font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
}
.pain-item h3{font-size:17px;margin-bottom:6px;}
.pain-item p{font-size:14px;color:var(--ink-2);margin:0;}

/* 方案 */
.solution-main{
  display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center;
  background:#fff;border-radius:var(--r-card);box-shadow:var(--s1);
  padding:32px;margin-bottom:24px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.solution-main:hover{box-shadow:var(--s2);transform:translateY(-2px);}
.solution-main img{height:280px;width:100%;object-fit:cover;}
.solution-sub{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.solution-card{
  background:#fff;border-radius:var(--r-card);box-shadow:var(--s1);
  overflow:hidden;transition:box-shadow .2s ease,transform .2s ease;
  display:flex;flex-direction:column;
}
.solution-card:hover{box-shadow:var(--s2);transform:translateY(-2px);}
.solution-card img{height:200px;width:100%;object-fit:cover;border-radius:0;}
.solution-card .card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-tag{
  display:inline-block;background:var(--blue-50);color:var(--blue);
  border-radius:var(--r-pill);padding:4px 12px;font-size:12px;font-weight:500;
  align-self:flex-start;
}
.card-tag.tag-teal{background:rgba(18,165,148,.1);color:var(--teal);}
.card-tag.tag-orange{background:rgba(255,106,61,.1);color:var(--orange);}
.solution-card h3,.solution-main h3{font-size:20px;}
.solution-card p,.solution-main p{font-size:15px;color:var(--ink-2);}
.solution-main .card-body{display:flex;flex-direction:column;gap:14px;}

/* 数据带 */
.stats{
  background:var(--blue-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:0 24px;}
.stat + .stat{border-left:1px solid rgba(27,95,168,.16);}
.stat strong{display:block;font-size:44px;font-weight:700;color:var(--blue);line-height:1.15;}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--ink-2);}

/* 最新信息 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;border-radius:var(--r-card);box-shadow:var(--s1);
  overflow:hidden;color:inherit;
  transition:box-shadow .2s ease,transform .2s ease;
}
.post-card:hover{box-shadow:var(--s2);transform:translateY(-2px);color:inherit;}
.post-card:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}
.post-cover{overflow:hidden;aspect-ratio:16/10;}
.post-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .25s ease;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-cat{align-self:flex-start;background:var(--blue-50);color:var(--blue);border-radius:var(--r-pill);padding:4px 12px;font-size:12px;font-weight:500;}
.post-title{
  font-size:18px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--divide);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.empty-state{
  background:#fff;border:1px dashed var(--blue-100);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-icon{
  width:48px;height:48px;border-radius:var(--r-btn);background:var(--blue-50);color:var(--blue);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:20px;font-weight:700;
}
.empty-state p{color:var(--ink-2);margin-bottom:12px;}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.step{position:relative;padding-top:40px;}
.step::before{
  content:"";position:absolute;top:8px;left:0;width:16px;height:16px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 4px rgba(27,95,168,.12);
}
.step::after{
  content:"";position:absolute;top:15px;left:32px;right:-24px;height:1px;background:var(--blue-100);
}
.step:last-child::after{display:none;}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--s1);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--divide);}
.faq-q{
  width:100%;background:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;min-height:56px;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--blue);}
.faq-icon{
  flex:0 0 22px;height:22px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--blue);font-size:16px;font-weight:600;
  transition:transform .25s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--ink-2);}

/* CTA */
.cta-band{
  background-image:linear-gradient(90deg,rgba(27,95,168,.94) 0%,rgba(13,51,88,.94) 100%);
  padding:0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 0;
}
.cta-inner h2{color:#fff;font-size:26px;}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15px;margin-top:10px;max-width:640px;}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.f-brand .logo{margin-bottom:16px;}
.f-brand p{font-size:14px;color:var(--ink-2);max-width:340px;}
.f-col h4{font-size:15px;margin-bottom:18px;}
.f-col li{margin-bottom:12px;}
.f-col a{font-size:14px;color:var(--ink-2);}
.f-col a:hover{color:var(--blue);}
.f-col p{font-size:14px;color:var(--ink-2);margin-bottom:12px;}
.footer-bottom{
  border-top:1px solid var(--divide);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* 弹层 */
.modal{
  position:fixed;inset:0;z-index:300;
  display:none;align-items:center;justify-content:center;
  padding:24px;
  background:rgba(14,27,42,.45);
}
.modal.open{display:flex;}
.modal-card{
  width:100%;max-width:520px;background:#fff;border-radius:var(--r-card);
  box-shadow:var(--s3);padding:28px;position:relative;
  max-height:90vh;overflow-y:auto;
}
.modal-card h3{font-size:20px;margin-bottom:8px;}
.modal-card .modal-sub{font-size:14px;color:var(--ink-2);margin-bottom:22px;}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
  color:var(--ink-2);font-size:18px;line-height:1;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;color:var(--ink);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;font-size:15px;font-family:inherit;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:88px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,95,168,.14);
}
.field .field-tip{font-size:13px;color:var(--err);margin-top:6px;display:none;}
.field.error input,.field.error select{border-color:var(--err);}
.field.error .field-tip{display:block;}
.privacy-note{font-size:13px;color:var(--ink-3);margin-top:14px;line-height:1.7;}
.privacy-note a{font-size:13px;}
.form-success{
  display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-btn);
  background:rgba(18,165,148,.1);color:#0b7a6c;font-size:14px;
}
.form-success.show{display:block;}

/* 响应式 */
@media (max-width:1279px){
  .hero h1{font-size:36px;}
}
@media (max-width:1024px){
  .nav-main,.header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual img{height:300px;}
  .pain-grid{grid-template-columns:1fr;}
  .solution-main{grid-template-columns:1fr;}
  .solution-main img{height:220px;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat{padding:20px 24px;}
  .stat + .stat{border-left:0;}
  .stat:nth-child(even){border-left:1px solid rgba(27,95,168,.16);}
  .stat:nth-child(n+3){border-top:1px solid rgba(27,95,168,.16);}
  .post-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr 1fr;gap:24px;}
  .step:nth-child(2n)::after{display:none;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .hero{padding:56px 0;}
  .hero h1{font-size:30px;}
  .section-head h2{font-size:24px;}
  .solution-sub{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .steps{grid-template-columns:1fr;gap:20px;padding-left:8px;}
  .step{padding-top:0;padding-left:32px;}
  .step::before{top:6px;left:0;}
  .step::after{display:none;}
  .steps{position:relative;}
  .steps::before{content:"";position:absolute;left:7px;top:12px;bottom:12px;width:1px;background:var(--blue-100);}
}
@media (max-width:559px){
  .container{padding:0 16px;}
  .hero h1{font-size:26px;}
  .hero-cta .btn{width:100%;}
  .float-card{position:static;margin-top:16px;box-shadow:var(--s2);}
  .stats-grid{grid-template-columns:1fr;}
  .stat + .stat,.stat:nth-child(even){border-left:0;border-top:1px solid rgba(27,95,168,.16);}
  .footer-grid{grid-template-columns:1fr;}
  .modal{padding:0;}
  .modal-card{max-width:none;height:100%;border-radius:0;max-height:none;}
  .faq-q{font-size:16px;padding:18px;}
  .faq-a p{padding:0 18px 20px;}
}

/* roulang page: article */
:root{
  --primary:#1B5FA8;
  --primary-light:#EAF2FB;
  --primary-line:#C8DCF2;
  --primary-hover:#12457C;
  --primary-press:#0D3358;
  --accent:#FF6A3D;
  --green:#12A594;
  --warn:#E0A100;
  --danger:#D64545;
  --text:#0E1B2A;
  --text-2:#4A5A6E;
  --text-3:#8A98A8;
  --border:#E4EAF2;
  --divider:#EFF3F8;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(16,42,74,.06);
  --s2:0 6px 18px rgba(16,42,74,.08);
  --s3:0 18px 48px rgba(16,42,74,.14);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text);background:var(--bg);}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1240px;}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--border);transition:box-shadow .25s ease;}
.site-header.scrolled{box-shadow:var(--s2);}
.header-inner{display:flex;align-items:center;gap:28px;padding:18px 0;transition:padding .25s ease;}
.site-header.scrolled .header-inner{padding:10px 0;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;letter-spacing:.02em;}
.logo-text{font-size:18px;font-weight:700;color:var(--text);white-space:nowrap;}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;}
.nav-main a{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;transition:color .2s ease;white-space:nowrap;}
.nav-main a:hover{color:var(--primary);}
.nav-main a.active{color:var(--primary);}
.nav-main a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:2px;background:var(--primary);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-close{display:none;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:var(--primary-line);background:var(--primary-light);}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:500;padding:12px 22px;cursor:pointer;transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;min-height:44px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--primary-hover);box-shadow:var(--s2);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-press);transform:translateY(1px);box-shadow:var(--s1);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary-line);}
.btn-ghost:hover{background:var(--primary-light);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:500;transition:color .2s ease;}
.text-link .arrow{transition:transform .2s ease;}
.text-link:hover{color:var(--primary-hover);}
.text-link:hover .arrow{transform:translateX(3px);}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--white);border-bottom:1px solid var(--divider);}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow:hidden;font-size:14px;color:var(--text-3);padding:14px 0;}
.crumb a{color:var(--text-2);transition:color .2s ease;}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--primary-line);}
.crumb .current{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52%;}

/* ---------- article head ---------- */
.article-main{padding:40px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 280px;gap:44px;justify-content:center;align-items:start;}
.badge{display:inline-block;padding:5px 14px;border-radius:var(--r-pill);background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:500;line-height:1.6;}
.article-head{border-bottom:1px solid var(--divider);padding-bottom:22px;margin-bottom:28px;}
.article-head h1{font-size:40px;line-height:1.35;margin:14px 0 16px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3);}
.article-meta .dot{color:var(--primary-line);}

/* ---------- article body ---------- */
.article-body{font-size:16px;line-height:1.85;color:#233648;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{font-size:24px;line-height:1.4;margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--primary);color:var(--text);}
.article-body h3{font-size:19px;line-height:1.45;margin:28px 0 12px;color:var(--text);}
.article-body h4{font-size:17px;margin:22px 0 10px;color:var(--text);}
.article-body blockquote{margin:24px 0;padding:16px 20px;background:var(--primary-light);border-left:3px solid var(--primary);border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--text-2);}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.4em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:8px;line-height:1.8;}
.article-body img{border-radius:var(--r-card);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body .table-wrap{overflow-x:auto;margin:24px 0;border-radius:var(--r-card);border:1px solid var(--border);}
.article-body table{width:100%;min-width:520px;font-size:15px;background:#fff;}
.article-body th,.article-body td{border:1px solid var(--border);padding:11px 14px;text-align:left;}
.article-body th{background:var(--primary-light);font-weight:600;color:var(--text);}
.article-body a{color:var(--primary);border-bottom:1px solid var(--primary-line);}
.article-body a:hover{color:var(--primary-hover);}
.article-body strong{color:var(--text);}
.article-body hr{border:0;border-top:1px solid var(--divider);margin:32px 0;}

.empty-state{padding:56px 24px;text-align:center;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--s1);}
.empty-state .empty-icon{width:48px;height:48px;border-radius:var(--r-card);background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin:0 auto 16px;}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px;}

/* ---------- article footer blocks ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 0;}
.tag-row a{display:inline-block;padding:6px 14px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--border);color:var(--text-2);font-size:13px;transition:color .2s ease,border-color .2s ease,background .2s ease;}
.tag-row a:hover{color:var(--primary);border-color:var(--primary-line);background:var(--primary-light);}
.share-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:22px;padding-top:22px;border-top:1px solid var(--divider);font-size:14px;color:var(--text-3);}
.share-row .share-btn{background:#fff;border:1px solid var(--border);border-radius:var(--r-pill);padding:7px 16px;font-size:13px;color:var(--text-2);cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;}
.share-row .share-btn:hover{color:var(--primary);border-color:var(--primary-line);background:var(--primary-light);}

.block-title{font-size:28px;line-height:1.35;margin-bottom:8px;}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.block-head p{color:var(--text-2);font-size:15px;margin-top:6px;}

.read-next{margin-top:56px;}
.next-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.next-card{display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--s1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;}
.next-card:hover{box-shadow:var(--s2);transform:translateY(-2px);border-color:var(--primary-line);}
.next-label{display:inline-block;font-size:12px;color:var(--green);background:rgba(18,165,148,.1);border-radius:var(--r-pill);padding:4px 12px;font-weight:500;}
.next-card h3{font-size:18px;line-height:1.5;margin:12px 0 8px;}
.next-card p{font-size:14px;color:var(--text-2);margin-bottom:14px;}

.recommend{margin-top:56px;}
.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--s1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;display:flex;flex-direction:column;}
.card:hover{box-shadow:var(--s2);transform:translateY(-2px);border-color:var(--primary-line);}
.card-cover{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--primary-light);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.55;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.card-body p{font-size:14px;color:var(--text-2);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.card-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);border-top:1px solid var(--divider);}

/* ---------- side ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px;box-shadow:var(--s1);}
.side-card h3{font-size:16px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--divider);}
.side-links li+li{margin-top:10px;}
.side-links a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);padding:4px 0;transition:color .2s ease;}
.side-links a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary-line);flex:0 0 auto;transition:background .2s ease;}
.side-links a:hover{color:var(--primary);}
.side-links a:hover::before{background:var(--primary);}
.side-card-tip{background:var(--primary-light);border-color:var(--primary-line);}
.side-card-tip h3{border-bottom-color:var(--primary-line);}
.side-card-tip p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- CTA band ---------- */
.cta-band{margin-top:64px;background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--s1);padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.cta-band h2{font-size:22px;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--text-2);}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);margin-top:80px;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:40px;}
.f-brand .logo{margin-bottom:16px;}
.f-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px;}
.f-col h4{font-size:15px;margin-bottom:16px;}
.f-col ul li+li{margin-top:10px;}
.f-col a{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.f-col a:hover{color:var(--primary);}
.f-col p{font-size:14px;color:var(--text-2);margin-bottom:10px;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;border-top:1px solid var(--divider);padding:20px 0 28px;font-size:13px;color:var(--text-3);}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;}
.modal.is-open{display:block;}
.modal-mask{position:absolute;inset:0;background:rgba(14,27,42,.45);}
.modal-card{position:relative;z-index:2;max-width:520px;margin:6vh auto;background:#fff;border-radius:var(--r-card);box-shadow:var(--s3);padding:32px;max-height:88vh;overflow-y:auto;}
.modal-card h2{font-size:22px;margin-bottom:8px;}
.modal-sub{font-size:14px;color:var(--text-2);margin-bottom:22px;}
.modal-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--border);background:#fff;color:var(--text-2);font-size:18px;line-height:1;cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;}
.modal-close:hover{color:var(--primary);border-color:var(--primary-line);background:var(--primary-light);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:500;margin-bottom:8px;}
.field input,.field select,.field textarea{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,95,168,.15);outline:none;}
.field textarea{min-height:88px;resize:vertical;}
.field .hint{font-size:13px;color:var(--text-3);margin-top:6px;}
.field.error input,.field.error select{border-color:var(--danger);}
.field .err-text{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.field.error .err-text{display:block;}
.privacy-line{font-size:13px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.privacy-link{background:none;border:0;padding:0;color:var(--primary);cursor:pointer;font-size:13px;border-bottom:1px solid var(--primary-line);}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .header-inner{gap:16px;}
  .nav-toggle{display:flex;}
  .nav-main{position:fixed;top:0;right:0;bottom:0;left:0;background:#fff;flex-direction:column;align-items:flex-start;gap:6px;padding:80px 24px 32px;transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;z-index:90;margin:0;}
  body.nav-open .nav-main{transform:translateX(0);}
  body.nav-open{overflow:hidden;}
  .nav-main a{font-size:18px;width:100%;padding:14px 0;border-bottom:1px solid var(--divider);}
  .nav-main a.active::after{display:none;}
  .nav-main a.active{color:var(--primary);}
  .nav-close{display:flex;position:absolute;top:22px;right:24px;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;font-size:20px;color:var(--text-2);cursor:pointer;}
  .header-actions .btn-primary{display:none;}
  .nav-main .drawer-cta{display:inline-flex;margin-top:20px;width:100%;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .card-grid-3{grid-template-columns:repeat(2,1fr);}
  .article-head h1{font-size:32px;}
}
@media (min-width:1025px){
  .drawer-cta{display:none;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .article-main{padding:28px 0 56px;}
  .article-head h1{font-size:28px;-webkit-line-clamp:3;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .block-title{font-size:22px;}
  .next-grid{grid-template-columns:1fr;}
  .card-grid-3{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px;margin-top:48px;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .modal-card{max-width:none;margin:0;height:100vh;max-height:100vh;border-radius:0;padding:28px 20px 40px;}
  .crumb .current{max-width:44%;}
}
@media (max-width:559px){
  .article-head h1{font-size:26px;}
  .btn{padding:12px 18px;}
  .cta-band h2{font-size:19px;}
}

/* roulang page: category1 */
:root{
  --primary:#1B5FA8;
  --primary-hover:#12457C;
  --primary-press:#0D3358;
  --primary-100:#EAF2FB;
  --primary-200:#C8DCF2;
  --accent:#FF6A3D;
  --green:#12A594;
  --text:#0E1B2A;
  --text-2:#4A5A6E;
  --text-3:#8A98A8;
  --border:#E4EAF2;
  --divider:#EFF3F8;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --danger:#D64545;
  --warn:#E0A100;
  --radius-card:12px;
  --radius-btn:8px;
  --radius-pill:999px;
  --s1:0 1px 2px rgba(16,42,74,.06);
  --s2:0 6px 18px rgba(16,42,74,.08);
  --s3:0 18px 48px rgba(16,42,74,.14);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-hover);}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:200;}
.skip-link:focus{left:0;color:#fff;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  text-align:center;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--s1);}
.btn-primary:hover{background:var(--primary-hover);color:#fff;box-shadow:var(--s2);transform:translateY(-1px);}
.btn-primary:active{background:var(--primary-press);transform:translateY(1px);box-shadow:none;}
.btn-accent{background:var(--accent);color:#fff;box-shadow:var(--s1);}
.btn-accent:hover{background:#F05527;color:#fff;box-shadow:var(--s2);transform:translateY(-1px);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:var(--white);color:var(--primary);border-color:var(--primary-200);}
.btn-ghost:hover{background:var(--primary-100);color:var(--primary-hover);border-color:var(--primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{background:var(--divider);color:var(--text-3);border-color:var(--border);cursor:not-allowed;box-shadow:none;transform:none;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--primary);}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;background:var(--white);
  border-bottom:1px solid var(--border);transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--s2);}
.header-inner{display:flex;align-items:center;gap:24px;height:88px;transition:height .2s ease;}
.site-header.is-scrolled .header-inner{height:64px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.logo-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.logo:hover .logo-text{color:var(--primary);}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:16px;flex:1 1 auto;}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--text-2);border-radius:var(--radius-btn);
}
.nav-main a:hover{color:var(--primary);background:var(--primary-100);}
.nav-main a.active{color:var(--primary);font-weight:600;}
.nav-main a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:2px;background:var(--primary);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);background:var(--white);
  border-radius:var(--radius-btn);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{
  position:fixed;inset:0;background:var(--white);z-index:120;display:none;
  flex-direction:column;padding:20px 24px 32px;overflow-y:auto;
}
.nav-drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--border);background:var(--white);border-radius:var(--radius-btn);
  font-size:20px;line-height:1;color:var(--text-2);
}
.drawer-close:hover{color:var(--primary);border-color:var(--primary-200);}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;font-size:18px;font-weight:500;
  color:var(--text);border-radius:var(--radius-btn);
}
.drawer-links a:hover,.drawer-links a.active{background:var(--primary-100);color:var(--primary);}

/* ---------- 首屏横幅 ---------- */
.page-banner{
  position:relative;
  padding:64px 0 56px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.74),rgba(247,249,252,.82)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;border-bottom:1px solid var(--border);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-3);}
.page-banner h1{
  font-size:40px;line-height:1.3;font-weight:700;letter-spacing:0;
  max-width:820px;margin-bottom:16px;
}
.banner-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:700px;margin-bottom:24px;}
.banner-chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;
  background:var(--white);border:1px solid var(--primary-200);border-radius:var(--radius-pill);
  font-size:13px;font-weight:500;color:var(--primary);
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-head{margin-bottom:32px;}
.section-title{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:12px;}
.section-sub{font-size:16px;color:var(--text-2);max-width:760px;}

/* ---------- 双栏：左目录 + 右内容 ---------- */
.layout-2col{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start;}
.toc-card{
  position:sticky;top:104px;background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--s1);padding:20px;
}
.toc-title{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.04em;margin-bottom:12px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:10px 12px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  transition:all .2s ease;
}
.toc-list a:hover{background:var(--primary-100);color:var(--primary);}
.toc-list a.is-active{background:var(--primary-100);color:var(--primary);border-left-color:var(--primary);font-weight:600;}
.toc-toggle{
  display:none;width:100%;min-height:48px;padding:0 14px;background:var(--white);
  border:1px solid var(--border);border-radius:var(--radius-btn);
  align-items:center;justify-content:space-between;font-size:15px;font-weight:600;color:var(--text);
}
.toc-toggle .caret{transition:transform .2s ease;color:var(--primary);}
.toc-card.is-open .toc-toggle .caret{transform:rotate(180deg);}

.content-col{display:flex;flex-direction:column;gap:56px;}
.block{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;}
.block--reverse .block-media{order:-1;}
.block-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--s1);transition:box-shadow .2s ease,transform .2s ease;
}
.block-media img:hover{box-shadow:var(--s2);transform:translateY(-2px);}
.block-tag{
  display:inline-block;padding:5px 12px;margin-bottom:14px;border-radius:var(--radius-pill);
  background:var(--primary-100);color:var(--primary);font-size:12px;font-weight:600;
}
.block-title{font-size:20px;line-height:1.45;font-weight:700;margin-bottom:14px;}
.block-text{font-size:16px;color:var(--text-2);margin-bottom:16px;}
.block-list{display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.block-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);}
.block-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--primary-200);border:2px solid var(--primary);
}
.callout{
  background:var(--primary-100);border-left:3px solid var(--primary);border-radius:8px;
  padding:14px 18px;font-size:15px;color:var(--text-2);
}
.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px;}
.mini-stat{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:14px 16px;box-shadow:var(--s1);
}
.mini-stat b{display:block;font-size:22px;font-weight:700;color:var(--primary);line-height:1.2;}
.mini-stat span{font-size:13px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--s1);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--divider);}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 24px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-q:hover{background:var(--primary-100);color:var(--primary);}
.faq-icon{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--primary-100);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;transition:transform .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  background:var(--primary-100);border-top:1px solid var(--primary-200);border-bottom:1px solid var(--primary-200);
  padding:48px 0;
}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-copy h2{font-size:24px;line-height:1.4;font-weight:700;margin-bottom:8px;}
.cta-copy p{font-size:15px;color:var(--text-2);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--white);border-top:1px solid var(--border);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
.f-brand .logo{margin-bottom:16px;}
.f-brand p{font-size:14px;color:var(--text-2);max-width:340px;}
.f-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);}
.f-col ul{display:flex;flex-direction:column;gap:10px;}
.f-col li a{font-size:14px;color:var(--text-2);}
.f-col li a:hover{color:var(--primary);}
.f-col p{font-size:14px;color:var(--text-2);margin-bottom:8px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid var(--divider);
  font-size:13px;color:var(--text-3);
}

/* ---------- 弹层表单 ---------- */
.modal{
  position:fixed;inset:0;z-index:160;display:none;align-items:center;justify-content:center;padding:24px;
  background:rgba(14,27,42,.45);
}
.modal.is-open{display:flex;}
.modal-panel{
  position:relative;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;
  background:var(--white);border-radius:var(--radius-card);box-shadow:var(--s3);padding:28px;
}
.modal-panel h3{font-size:20px;font-weight:700;margin-bottom:8px;}
.modal-panel .modal-sub{font-size:14px;color:var(--text-2);margin-bottom:20px;}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:8px;
  border:1px solid var(--border);background:var(--white);color:var(--text-2);font-size:18px;line-height:1;
}
.modal-close:hover{color:var(--primary);border-color:var(--primary-200);background:var(--primary-100);}
.form-row{margin-bottom:16px;}
.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.form-control{
  width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-btn);
  background:var(--white);color:var(--text);transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-100);outline:none;}
textarea.form-control{min-height:88px;resize:vertical;}
.form-error{display:none;margin-top:6px;font-size:14px;color:var(--danger);}
.form-row.has-error .form-control{border-color:var(--danger);}
.form-row.has-error .form-error{display:block;}
.form-note{margin-top:12px;font-size:13px;color:var(--text-3);line-height:1.7;}
.form-note a{color:var(--primary);}
.skeleton{
  background:linear-gradient(90deg,var(--divider) 25%,#F5F8FC 50%,var(--divider) 75%);
  background-size:200% 100%;animation:skeleton 1.2s infinite;border-radius:8px;
}
@keyframes skeleton{0%{background-position:200% 0;}100%{background-position:-200% 0;}}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--container:1120px;}
  .layout-2col{grid-template-columns:220px minmax(0,1fr);gap:32px;}
}
@media (max-width:1023px){
  .nav-main,.header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .page-banner{padding:48px 0 40px;}
  .page-banner h1{font-size:32px;}
  .section{padding:56px 0;}
  .layout-2col{grid-template-columns:minmax(0,1fr);gap:28px;}
  .toc-col{position:static;}
  .toc-card{position:static;padding:14px;}
  .toc-toggle{display:flex;}
  .toc-list{display:none;margin-top:12px;border-top:1px solid var(--divider);padding-top:8px;}
  .toc-card.is-open .toc-list{display:flex;}
  .block{grid-template-columns:minmax(0,1fr);gap:24px;}
  .block--reverse .block-media{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .header-inner{height:64px;}
  .logo-text{font-size:16px;}
  .section{padding:48px 0;}
  .page-banner h1{font-size:30px;}
  .section-title{font-size:24px;}
  .mini-stats{grid-template-columns:1fr;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:559px){
  .container{padding:0 16px;}
  .page-banner h1{font-size:28px;}
  .btn{width:100%;}
  .banner-actions{flex-direction:column;}
  .modal{padding:0;}
  .modal-panel{max-width:100%;height:100%;max-height:100%;border-radius:0;}
}

/* roulang page: category2 */
:root{
  --blue:#1B5FA8;
  --blue-mid:#12457C;
  --blue-deep:#0D3358;
  --blue-100:#EAF2FB;
  --blue-200:#C8DCF2;
  --orange:#FF6A3D;
  --teal:#12A594;
  --text:#0E1B2A;
  --text-2:#4A5A6E;
  --text-3:#8A98A8;
  --border:#E4EAF2;
  --line:#EFF3F8;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --s1:0 1px 2px rgba(16,42,74,.06);
  --s2:0 6px 18px rgba(16,42,74,.08);
  --s3:0 18px 48px rgba(16,42,74,.14);
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  transition:background .2s ease,box-shadow .2s ease,transform .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--blue);
  color:#fff;
  box-shadow:var(--s1);
}
.btn-primary:hover{background:var(--blue-mid);box-shadow:var(--s2);transform:translateY(-1px)}
.btn-primary:active{background:var(--blue-deep);transform:translateY(1px);box-shadow:none}
.btn-ghost{
  background:#fff;
  color:var(--blue);
  border:1px solid var(--blue-200);
}
.btn-ghost:hover{background:var(--blue-100);border-color:var(--blue)}
.btn-ghost:active{background:var(--blue-200);transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--blue);
  font-size:14px;
  font-weight:600;
}
.text-link .arw{transition:transform .2s ease}
.text-link:hover .arw{transform:translateX(3px)}

.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:var(--blue-100);
  color:var(--blue);
  font-size:12px;
  font-weight:500;
  line-height:1.6;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:var(--s2)}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:var(--header-h);
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;
  border-radius:8px;
  background:var(--blue);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
}
.logo-text{font-size:17px;font-weight:700;color:var(--text)}
.nav-main{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-main a{
  position:relative;
  padding:10px 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-main a:hover{color:var(--blue);background:var(--blue-100)}
.nav-main a.active{color:var(--blue);font-weight:600}
.nav-main a.active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:3px;
  border-radius:2px;
  background:var(--blue);
}
.header-cta{margin-left:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-btn);
}
.nav-toggle span{
  position:relative;
  display:block;
  width:22px;height:2px;
  border-radius:2px;
  background:var(--text);
  transition:background .2s ease;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:22px;height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:64px 0 72px;
  background-color:#EAF2FB;
  background-image:linear-gradient(rgba(255,255,255,.74),rgba(247,249,252,.68)),url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(27,95,168,.035) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.18fr .82fr;
  gap:56px;
  align-items:center;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:20px;
}
.crumb a:hover{color:var(--blue)}
.crumb .sep{color:var(--blue-200)}
.crumb .now{color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero h1{
  font-size:40px;
  line-height:1.3;
  margin:18px 0 18px;
}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:34em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:22px;
  font-size:14px;
  color:var(--text-3);
}
.hero-trust span{display:inline-flex;align-items:center;gap:10px}
.hero-trust span+span::before{
  content:"·";
  color:var(--blue-200);
  margin-right:0;
}
.hero-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--s2);
  background:#fff;
  border:1px solid var(--border);
}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-float{
  position:absolute;
  right:16px;
  bottom:16px;
  background:#fff;
  border-radius:var(--r-card);
  box-shadow:var(--s3);
  padding:14px 18px;
  display:flex;
  flex-direction:column;
  gap:2px;
  border:1px solid var(--border);
}
.hero-float strong{font-size:20px;color:var(--blue);line-height:1.3}
.hero-float span{font-size:13px;color:var(--text-3)}

/* ---------- 胶囊导览 ---------- */
.chipbar{
  position:sticky;
  top:var(--header-h);
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.chips{
  display:flex;
  gap:12px;
  overflow-x:auto;
  padding:14px 0;
  scrollbar-width:none;
}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex-shrink:0;
  padding:9px 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--border);
  background:#fff;
  color:var(--text-2);
  font-size:14px;
  line-height:1.4;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip.active{
  background:var(--blue);
  border-color:var(--blue);
  color:#fff;
  box-shadow:var(--s1);
}
.chip.active:hover{color:#fff}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0}
.section-head{max-width:760px;margin-bottom:40px}
.kicker{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--blue);
  letter-spacing:.02em;
  margin-bottom:12px;
}
.section-head h2{font-size:28px;line-height:1.35}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}

/* ---------- 卡片矩阵 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  overflow:hidden;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.entry-card:hover{box-shadow:var(--s2);transform:translateY(-2px)}
.entry-card:focus-within{border-color:var(--blue);box-shadow:var(--s2)}
.entry-card .cover{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--blue-100);
}
.entry-card .cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.entry-card:hover .cover img{transform:scale(1.04)}
.card-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-body h3{font-size:20px;line-height:1.4}
.card-body p{font-size:15px;color:var(--text-2);line-height:1.75}
.card-body .card-foot{margin-top:auto;padding-top:6px}

/* ---------- 要点横带 ---------- */
.band{
  background:var(--blue-100);
  padding:56px 0;
  border-top:1px solid var(--blue-200);
  border-bottom:1px solid var(--blue-200);
}
.band-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:28px;
}
.band-head h2{font-size:24px}
.band-head span{font-size:14px;color:var(--text-2)}
.band-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px 44px;
}
.band-item{
  display:flex;
  gap:16px;
  background:#fff;
  border-radius:var(--r-card);
  border:1px solid rgba(200,220,242,.9);
  padding:20px 22px;
}
.band-num{
  flex-shrink:0;
  font-size:15px;
  font-weight:700;
  color:var(--blue);
  line-height:1.6;
}
.band-item h3{font-size:16px;margin-bottom:4px}
.band-item p{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 分步说明 ---------- */
.step-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  padding:36px 0;
  border-bottom:1px solid var(--line);
}
.step-row:last-child{border-bottom:0}
.step-row.rev .step-media{order:2}
.step-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--s1);
  background:#fff;
}
.step-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.step-text h3{font-size:22px;margin-bottom:14px}
.step-text p{color:var(--text-2);font-size:15px;line-height:1.85}
.step-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.step-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.75;
}
.step-list li .dot{
  flex-shrink:0;
  width:8px;height:8px;
  margin-top:11px;
  border-radius:50%;
  background:var(--blue);
}
.info-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
  margin-top:8px;
}
.info-box{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--s1);
}
.info-box h4{font-size:16px;margin-bottom:8px}
.info-box p{font-size:14px;color:var(--text-2);line-height:1.75}
.note-box{
  background:var(--blue-100);
  border:1px solid var(--blue-200);
  border-radius:var(--r-card);
  padding:24px;
  margin-top:8px;
}
.note-box h4{font-size:16px;margin-bottom:8px}
.note-box p{font-size:14px;color:var(--text-2);line-height:1.8}
.note-box ul{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.note-box li{font-size:14px;color:var(--text-2);display:flex;gap:10px}
.note-box li::before{content:"—";color:var(--blue);flex-shrink:0}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  overflow:hidden;
}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 24px;
  min-height:48px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:background .2s ease,color .2s ease;
}
.faq-q:hover{background:var(--bg)}
.faq-q .ico{
  flex-shrink:0;
  width:24px;height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  font-weight:400;
  color:var(--blue);
  transition:transform .25s ease;
}
.faq-item.open .faq-q{color:var(--blue)}
.faq-item.open .faq-q .ico{transform:rotate(45deg)}
.faq-a{
  display:none;
  padding:0 24px 22px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
}
.faq-item.open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  padding:64px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.4fr .6fr;
  gap:40px;
  align-items:center;
  background:var(--blue-100);
  border:1px solid var(--blue-200);
  border-radius:var(--r-card);
  padding:40px;
}
.cta-inner h2{font-size:26px;margin-bottom:12px}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:44em}
.cta-action{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.cta-action .btn{width:100%}
.cta-action small{font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 表单弹层 ---------- */
.modal-mount{
  position:fixed;
  inset:0;
  z-index:200;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(14,27,42,.45);
}
.modal-card{
  position:relative;
  width:100%;
  max-width:520px;
  max-height:90vh;
  overflow-y:auto;
  background:#fff;
  border-radius:var(--r-card);
  box-shadow:var(--s3);
  padding:32px;
}
.modal-card h3{font-size:22px;margin-bottom:8px}
.modal-card>p{font-size:14px;color:var(--text-2);margin-bottom:22px}
.modal-close{
  position:absolute;
  top:14px;
  right:14px;
  width:36px;height:36px;
  border-radius:var(--r-btn);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  line-height:1;
  color:var(--text-3);
  transition:background .2s ease,color .2s ease;
}
.modal-close:hover{background:var(--blue-100);color:var(--blue)}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:14px;
  font-weight:500;
  margin-bottom:6px;
  color:var(--text);
}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#fff;
  font-size:15px;
  line-height:1.5;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(27,95,168,.14);
}
.field .hint{font-size:13px;color:var(--text-3);margin-top:6px}
.privacy-line{
  margin-top:14px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.privacy-line a{color:var(--blue)}
.privacy-line a:hover{text-decoration:underline}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#fff;
  border-top:1px solid var(--border);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:40px;
}
.f-brand .logo{margin-bottom:16px}
.f-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:34em}
.f-col h4{font-size:15px;margin-bottom:16px}
.f-col ul{display:flex;flex-direction:column;gap:10px}
.f-col li,.f-col p{font-size:14px;color:var(--text-2);line-height:1.7}
.f-col a{transition:color .2s ease}
.f-col a:hover{color:var(--blue)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 24px;
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-inner{gap:40px}
}
@media (max-width:1023px){
  :root{--header-h:64px}
  .nav-toggle{display:flex;margin-left:auto}
  .nav-main{
    position:fixed;
    inset:0;
    margin:0;
    padding:84px 24px 32px;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    overflow-y:auto;
  }
  .nav-main.is-open{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }
  .nav-main a{
    font-size:18px;
    padding:14px 8px;
    border-radius:var(--r-btn);
  }
  .nav-main a.active::after{left:8px;right:auto;width:26px;bottom:8px}
  .header-cta{display:none}
  .nav-main .drawer-cta{
    display:inline-flex;
    margin-top:16px;
    width:100%;
  }
  .hero{padding:48px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .hero-media{max-width:560px}
  .section{padding:64px 0}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .band-list{grid-template-columns:1fr;gap:16px}
  .step-row{grid-template-columns:1fr;gap:28px;padding:28px 0}
  .step-row.rev .step-media{order:0}
  .info-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .section-head h2{font-size:24px}
  .card-grid{grid-template-columns:1fr;gap:16px}
  .card-body{padding:20px}
  .band-head h2{font-size:21px}
  .step-text h3{font-size:19px}
  .faq-q{font-size:16px;padding:18px}
  .faq-a{padding:0 18px 18px}
  .modal-mount{padding:0}
  .modal-card{
    max-width:none;
    width:100%;
    height:100%;
    max-height:none;
    border-radius:0;
    padding:24px 18px 32px;
  }
}
@media (max-width:559px){
  .hero{padding:36px 0 44px}
  .hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .hero-float{right:12px;bottom:12px;padding:10px 14px}
  .hero-float strong{font-size:17px}
  .section{padding:48px 0}
  .cta-inner{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
}
@media (min-width:1024px){
  .nav-main .drawer-cta{display:none}
}