/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --ink-900:#0E1B33;
  --ink-600:#43536B;
  --ink-400:#7A879C;
  --brand-600:#1B5FD9;
  --brand-700:#14499F;
  --brand-100:#EAF1FD;
  --accent-500:#F2724B;
  --bg-050:#F6F8FB;
  --white:#FFFFFF;
  --line:#E4EAF3;
  --footer-bg:#101C33;
  --nav-w:240px;
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 6px 20px rgba(16,40,80,.06);
  --sh-2:0 12px 32px rgba(16,40,80,.12);
  --sh-nav:0 4px 16px rgba(16,40,80,.08);
  --tr:200ms ease;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3;letter-spacing:0;}
h1{font-size:44px;line-height:1.25;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:20px;line-height:1.35;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-100);color:var(--brand-700);}

/* ===== 容器 ===== */
.grid-container{
  max-width:1200px;
  width:100%;
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.band-white{background:var(--white);}
.band-soft{background:var(--bg-050);}

/* ===== 区块标题组 ===== */
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand-600);
  background:var(--brand-100);
  border-radius:999px;
  padding:5px 12px;
  margin-bottom:16px;
  font-weight:600;
}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.sec-head .sec-text{max-width:720px;}
.sec-head h2{margin-bottom:12px;}
.sec-head .sec-sub{font-size:16px;color:var(--ink-400);max-width:620px;margin:0;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
  white-space:nowrap;
  padding-bottom:2px;
}
.text-link i{transition:transform var(--tr);}
.text-link:hover{color:var(--brand-700);border-bottom:2px solid var(--brand-600);}
.text-link:hover i{transform:translateX(3px);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:all var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(27,95,217,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,95,217,.28);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);}
.btn-block{display:flex;width:100%;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
  white-space:nowrap;
}
.badge-accent{background:#FDEBE5;color:#C2491F;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ===== 左侧竖向导航 ===== */
.side-nav{
  position:fixed;
  top:0;left:0;
  width:var(--nav-w);
  height:100vh;
  background:var(--white);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  overflow-y:auto;
  z-index:60;
}
.brand{
  display:block;
  padding:20px 20px 18px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  display:block;
  font-size:21px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:.01em;
}
.brand-mark:hover{color:var(--brand-600);}
.brand-sub{
  display:block;
  margin-top:4px;
  font-size:12px;
  color:var(--ink-400);
  letter-spacing:.02em;
}
.side-links{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1;}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 16px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--ink-600);
  transition:all var(--tr);
}
.side-link i{width:17px;font-size:14px;color:var(--ink-400);transition:color var(--tr);}
.side-link:hover{background:var(--bg-050);color:var(--brand-700);}
.side-link:hover i{color:var(--brand-600);}
.side-link.active{
  background:var(--brand-100);
  color:var(--brand-700);
  font-weight:600;
}
.side-link.active i{color:var(--brand-600);}
.side-link.active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:2px;
  background:var(--brand-600);
}
.side-cta{
  padding:16px 20px 24px;
  border-top:1px solid var(--line);
}
.side-cta p{font-size:12px;color:var(--ink-400);margin-bottom:10px;line-height:1.6;}

/* ===== 移动顶栏 ===== */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  background:var(--white);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:70;
  transition:box-shadow var(--tr);
}
.topbar.scrolled{box-shadow:var(--sh-nav);}
.topbar .brand-mark{font-size:18px;}
.topbar .brand-sub{display:none;}
.burger{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--ink-900);
  font-size:17px;
  cursor:pointer;
  transition:all var(--tr);
}
.burger:hover{border-color:var(--brand-600);color:var(--brand-600);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(14,27,51,.42);
  opacity:0;visibility:hidden;
  transition:opacity var(--tr);
  z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:340px;
  height:100vh;
  background:var(--white);
  transform:translateX(100%);
  transition:transform 240ms ease;
  z-index:90;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  color:var(--ink-600);font-size:16px;
}
.drawer-links{padding:12px;display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-cta{padding:16px;border-top:1px solid var(--line);}

/* ===== 主体区 ===== */
.main-area{margin-left:var(--nav-w);min-height:100vh;}

/* ===== Hero ===== */
.hero{
  background:var(--white);
  padding:80px 0 0;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{margin-bottom:20px;}
.hero-copy .lead{
  font-size:17px;
  color:var(--ink-600);
  line-height:1.85;
  max-width:560px;
  margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:20px;}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-600);
}
.hero-points i{color:var(--brand-600);font-size:14px;}
.hero-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  background:var(--brand-100);
  aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.trust-bar{
  margin-top:56px;
  padding:32px 0;
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.trust-item{
  padding:0 32px;
  border-left:1px solid var(--line);
}
.trust-item:first-child{border-left:none;padding-left:0;}
.trust-num{
  display:block;
  font-size:28px;
  font-weight:700;
  color:var(--brand-600);
  line-height:1.3;
}
.trust-num small{font-size:15px;font-weight:600;margin-left:2px;}
.trust-label{display:block;font-size:13px;color:var(--ink-400);margin-top:2px;}

/* ===== 卡片通用 ===== */
.fcard{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:32px;
  transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);
  height:100%;
  display:flex;
  flex-direction:column;
}
.fcard:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:#D3DEF0;}
.fcard h3{margin-bottom:12px;}
.fcard p{font-size:15px;color:var(--ink-600);margin-bottom:16px;}
.fcard .text-link{margin-top:auto;}
.card-icon{
  width:44px;height:44px;
  border-radius:10px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-bottom:20px;
}
.fcard-lg{padding:36px;}
.fcard-lg .card-media{
  border-radius:10px;
  overflow:hidden;
  margin-bottom:24px;
  aspect-ratio:16/9;
  background:var(--brand-100);
  border:1px solid var(--line);
}
.fcard-lg .card-media img{width:100%;height:100%;object-fit:cover;}
.feature-grid{margin-top:-16px;}
.feature-grid > .cell{padding-top:16px;padding-bottom:16px;}

/* ===== 使用场景 ===== */
.scene{margin-bottom:88px;}
.scene:last-child{margin-bottom:0;}
.scene-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.scene-grid.reverse .scene-copy{order:2;}
.scene-grid.reverse .scene-media{order:1;}
.scene-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  aspect-ratio:16/11;
  background:var(--brand-100);
}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-copy h3{font-size:24px;margin-bottom:16px;}
.scene-copy p{max-width:520px;}
.scene-list{margin:20px 0 24px;display:flex;flex-direction:column;gap:12px;}
.scene-list li{
  display:flex;gap:12px;
  font-size:15px;
  color:var(--ink-600);
  line-height:1.7;
}
.scene-list i{color:var(--brand-600);margin-top:6px;font-size:13px;}

/* ===== 案例 ===== */
.case-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:box-shadow var(--tr),transform var(--tr);
}
.case-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.case-media{aspect-ratio:16/9;background:var(--brand-100);border-bottom:1px solid var(--line);}
.case-media img{width:100%;height:100%;object-fit:cover;}
.case-body{padding:24px 28px 28px;display:flex;flex-direction:column;flex:1;}
.case-body h3{font-size:19px;margin:14px 0 10px;}
.case-body p{font-size:14.5px;color:var(--ink-600);margin-bottom:18px;}
.case-metric{
  font-size:24px;
  font-weight:700;
  color:var(--accent-500);
  line-height:1.3;
  margin-bottom:2px;
}
.case-metric-label{font-size:13px;color:var(--ink-400);display:block;}
.case-metric-wrap{margin-bottom:16px;}
.metric-strip{
  margin-top:40px;
  background:var(--brand-100);
  border-radius:var(--r-card);
  padding:28px 32px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.metric-strip div span{display:block;}
.strip-num{font-size:26px;font-weight:700;color:var(--brand-700);}
.strip-label{font-size:13px;color:var(--ink-600);}

/* ===== 价格 ===== */
.price-grid{margin-top:-16px;}
.price-grid > .cell{padding-top:16px;padding-bottom:16px;}
.price-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:36px 32px;
  height:100%;
  display:flex;
  flex-direction:column;
  transition:box-shadow var(--tr),transform var(--tr);
}
.price-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.price-card.featured{
  border:2px solid var(--brand-600);
  box-shadow:0 16px 40px rgba(16,40,80,.14);
}
.price-flag{
  position:absolute;
  top:-13px;left:32px;
  height:26px;
  display:inline-flex;align-items:center;
  padding:0 12px;
  border-radius:999px;
  background:var(--accent-500);
  color:#fff;
  font-size:12px;
  font-weight:600;
}
.price-name{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:6px;}
.price-desc{font-size:13.5px;color:var(--ink-400);margin-bottom:22px;}
.price-amount{
  font-size:34px;
  font-weight:700;
  color:var(--ink-900);
  line-height:1.2;
  margin-bottom:6px;
}
.price-amount small{font-size:14px;font-weight:500;color:var(--ink-400);margin-left:4px;}
.price-note{font-size:13px;color:var(--ink-400);margin-bottom:24px;}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1;}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-600);line-height:1.7;}
.price-list i{color:var(--brand-600);font-size:13px;margin-top:6px;}
.compare-row{
  margin-top:32px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.compare-row table{width:100%;border-collapse:collapse;font-size:14.5px;}
.compare-row th,.compare-row td{
  padding:16px 24px;
  text-align:left;
  border-bottom:1px solid var(--line);
  color:var(--ink-600);
}
.compare-row thead th{background:var(--bg-050);color:var(--ink-900);font-weight:600;}
.compare-row tbody tr:nth-child(even){background:#FBFCFE;}
.compare-row tbody tr:last-child td{border-bottom:none;}

/* ===== 资讯列表（CMS） ===== */
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-row{
  display:grid;
  grid-template-columns:150px 1fr 40px;
  gap:24px;
  align-items:center;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 28px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);
  color:inherit;
}
.news-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:#D3DEF0;}
.news-row:first-child{padding:32px 28px;border-color:#CFDDF5;}
.news-meta{display:flex;flex-direction:column;gap:10px;align-items:flex-start;}
.news-date{font-size:13px;color:var(--ink-400);}
.news-main h3{
  font-size:18px;
  margin-bottom:8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-main p{
  font-size:14px;
  color:var(--ink-600);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-arrow{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-600);
  font-size:14px;
  transition:all var(--tr);
}
.news-row:hover .news-arrow{background:var(--brand-600);border-color:var(--brand-600);color:#fff;}
.empty-card{
  border:1px dashed #C4D3EA;
  border-radius:var(--r-card);
  background:var(--white);
  padding:48px 32px;
  text-align:center;
}
.empty-card p{color:var(--ink-400);font-size:15px;margin-bottom:20px;}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:22px 4px;
  background:none;
  border:none;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  transition:color var(--tr);
}
.faq-q:hover{color:var(--brand-600);}
.faq-q .faq-icon{
  flex:none;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-600);
  font-size:12px;
  transition:transform var(--tr),background var(--tr);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-100);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 200ms ease;
}
.faq-a p{
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
  padding:0 44px 22px 4px;
  margin:0;
}

/* ===== CTA 横幅 ===== */
.cta-banner{
  background:var(--brand-600);
  border-radius:16px;
  padding:48px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  color:#fff;
  box-shadow:0 16px 40px rgba(27,95,217,.24);
}
.cta-banner h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-banner p{color:rgba(255,255,255,.86);font-size:15px;margin:0;max-width:640px;}
.cta-banner .btn-ghost{background:#fff;border-color:#fff;color:var(--brand-700);}
.cta-banner .btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--footer-bg);
  color:#A9B6CA;
  margin-top:88px;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-mark{color:#fff;font-size:20px;}
.footer-brand .brand-mark:hover{color:#8FB6F5;}
.footer-brand p{font-size:14px;line-height:1.8;margin:16px 0 18px;color:#98A6BC;}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-list{display:flex;flex-direction:column;gap:12px;}
.footer-list a{font-size:14px;color:#A9B6CA;}
.footer-list a:hover{color:#8FB6F5;}
.footer-contact{font-size:14px;line-height:1.9;color:#98A6BC;}
.footer-contact strong{color:#fff;font-weight:600;display:block;margin-bottom:6px;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:24px 0 32px;
  font-size:13px;
  color:#8394AC;
  flex-wrap:wrap;
}
.footer-bottom a{color:#8394AC;}
.footer-bottom a:hover{color:#8FB6F5;}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  color:#A9B6CA;font-size:13px;
}
.to-top:hover{color:#8FB6F5;}

/* ===== 响应式 ===== */
@media (max-width:1439px){
  .grid-container{max-width:1180px;}
}
@media (max-width:1023px){
  body{font-size:15px;}
  .topbar{display:flex;}
  .side-nav{transform:translateX(-100%);transition:transform 240ms ease;width:280px;max-width:84%;}
  .side-nav.open{transform:translateX(0);box-shadow:var(--sh-2);}
  .main-area{margin-left:0;padding-top:60px;}
  .hero{padding-top:56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media{aspect-ratio:16/10;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .trust-bar{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .trust-item{padding:0 24px;}
  .trust-item:nth-child(odd){border-left:none;padding-left:0;}
  .scene-grid{grid-template-columns:1fr;gap:32px;}
  .scene-grid.reverse .scene-copy{order:1;}
  .scene-grid.reverse .scene-media{order:2;}
  .scene{margin-bottom:64px;}
  .metric-strip{grid-template-columns:1fr;gap:18px;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:180px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .news-row{grid-template-columns:1fr;gap:14px;padding:22px;}
  .news-row:first-child{padding:26px 22px;}
  .news-arrow{display:none;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px;}
}
@media (max-width:639px){
  h1{font-size:30px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .section{padding:48px 0;}
  .hero{padding-top:40px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .trust-bar{grid-template-columns:1fr;gap:24px;margin-top:40px;padding:24px 0;}
  .trust-item{padding:0;border-left:none;border-top:1px solid var(--line);padding-top:20px;}
  .trust-item:first-child{border-top:none;padding-top:0;}
  .fcard,.fcard-lg{padding:24px;}
  .price-card{padding:28px 24px;}
  .cta-banner h2{font-size:22px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px;}
  .compare-row th,.compare-row td{padding:12px 16px;font-size:13.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .fcard:hover,.case-card:hover,.price-card:hover,.news-row:hover,.btn:hover{transform:none;}
}

/* roulang page: article */
:root{
  --ink-900:#0E1B33;
  --ink-600:#43536B;
  --ink-400:#7A879C;
  --brand-600:#1B5FD9;
  --brand-700:#14499F;
  --brand-100:#EAF1FD;
  --accent-500:#F2724B;
  --bg-050:#F6F8FB;
  --white:#FFFFFF;
  --line:#E4EAF3;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:8px;
  --shadow-card:0 6px 20px rgba(16,40,80,.06);
  --shadow-hover:0 12px 32px rgba(16,40,80,.12);
  --shadow-nav:0 4px 16px rgba(16,40,80,.08);
  --rail-w:240px;
  --font-sans:"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%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{color:var(--ink-900);font-weight:700;line-height:1.32;margin:0;letter-spacing:0}
p{margin:0}
ul,ol{margin:0}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.btn:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;
}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.main-wrap{margin-left:var(--rail-w);padding-bottom:0}
.section{padding:88px 0}
.section-tight{padding:56px 0}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand-600);margin-bottom:12px}
.section-head{margin-bottom:36px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-title{font-size:32px;line-height:1.3}
.section-desc{font-size:15px;color:var(--ink-400);margin-top:10px;max-width:720px}
.text-link{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link i{transition:transform .2s ease}
.text-link:hover i{transform:translateX(3px)}
.text-link:hover{border-bottom:2px solid var(--brand-600)}

/* 左侧竖向导航 */
.side-rail{
  position:fixed;top:0;left:0;width:var(--rail-w);height:100vh;
  background:var(--white);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 16px 22px;
  overflow-y:auto;z-index:50;
}
.rail-brand{
  min-height:72px;display:flex;flex-direction:column;justify-content:center;gap:2px;
  padding:0 8px;border-bottom:1px solid var(--line);margin-bottom:18px;
}
.rail-brand .brand-mark{font-size:20px;font-weight:700;color:var(--ink-900)}
.rail-brand .brand-mark:hover{color:var(--brand-600)}
.rail-brand span{font-size:12px;color:var(--ink-400);letter-spacing:.02em}
.rail-nav{display:flex;flex-direction:column;gap:6px}
.rail-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 16px;border-radius:10px;
  font-size:15px;color:var(--ink-600);
  transition:background .2s ease,color .2s ease;
}
.rail-link i{width:16px;font-size:14px;color:var(--ink-400);transition:color .2s ease}
.rail-link:hover{background:var(--bg-050);color:var(--brand-600)}
.rail-link:hover i{color:var(--brand-600)}
.rail-link.active{background:var(--brand-100);color:var(--brand-600);font-weight:600}
.rail-link.active i{color:var(--brand-600)}
.rail-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand-600);
}
.rail-cta{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.rail-cta .btn{width:100%}
.rail-note{font-size:12px;color:var(--ink-400);line-height:1.7;margin-top:12px}

/* 移动端顶栏与抽屉 */
.topbar{
  display:none;position:sticky;top:0;height:60px;
  background:var(--white);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;z-index:60;transition:box-shadow .2s ease;
}
.topbar.scrolled{box-shadow:var(--shadow-nav)}
.topbar .brand-mark{font-size:18px;font-weight:700;color:var(--ink-900)}
.burger{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--white);border:1px solid var(--line);border-radius:10px;
  color:var(--ink-900);font-size:17px;cursor:pointer;transition:background .2s ease,color .2s ease;
}
.burger:hover{background:var(--brand-100);color:var(--brand-600)}
.drawer{
  position:fixed;inset:0;background:rgba(14,27,51,.45);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:90;
}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:84%;max-width:340px;height:100%;
  background:var(--white);padding:18px 18px 26px;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .24s ease;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-head .brand-mark{font-size:18px;font-weight:700;color:var(--ink-900)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin:18px 0 22px}
.drawer .btn{width:100%}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);padding:26px 0 0}
.crumb a{color:var(--ink-600)}
.crumb a:hover{color:var(--brand-600);border-bottom:1px solid var(--brand-600)}
.crumb i{font-size:10px;color:var(--ink-400)}
.crumb .current{color:var(--ink-400)}

/* 文章头部 */
.article-head{max-width:1080px;margin:0 auto;padding:26px 0 0}
.article-head h1{font-size:44px;line-height:1.3;margin:16px 0 20px;max-width:900px}
.lead{
  font-size:17px;line-height:1.85;color:var(--ink-600);max-width:760px;
  padding-left:16px;border-left:3px solid var(--brand-600);
}
.meta-row{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin-top:24px;font-size:13px;color:var(--ink-400)}
.meta-row i{color:var(--brand-600);margin-right:6px}
.article-cover{margin:34px auto 0;max-width:1080px}
.article-cover img{
  width:100%;aspect-ratio:16/7;object-fit:cover;border-radius:var(--radius-card);
  background:var(--brand-100);box-shadow:var(--shadow-card);
}
.article-cover figcaption{font-size:13px;color:var(--ink-400);margin-top:12px;text-align:center}

/* 正文区与侧栏 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 260px;
  gap:48px;align-items:start;justify-content:space-between;
  max-width:1080px;margin:44px auto 0;
}
.article-body{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:40px 44px;font-size:16px;line-height:1.9;color:var(--ink-600);
}
.article-body p{margin:0 0 1em}
.article-body h2{
  font-size:26px;line-height:1.35;color:var(--ink-900);font-weight:700;
  margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--brand-600);
}
.article-body h3{font-size:20px;line-height:1.4;color:var(--ink-900);font-weight:600;margin:28px 0 12px}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--bg-050);
  border-left:3px solid var(--brand-600);border-radius:0 10px 10px 0;color:var(--ink-600);
}
.article-body img{border-radius:12px;margin:22px 0;width:100%;height:auto;background:var(--brand-100)}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(27,95,217,.35)}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;border:1px solid var(--line)}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:var(--brand-100);color:var(--ink-900);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--bg-050)}
.article-body code{background:var(--bg-050);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px}

.empty-state{
  padding:48px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--bg-050);text-align:center;
}
.empty-state p{font-size:17px;color:var(--ink-600);margin-bottom:18px}

.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
.side-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:22px;
}
.side-card h3{font-size:17px;margin-bottom:10px}
.side-card p{font-size:14px;line-height:1.8;color:var(--ink-600)}
.side-card .btn{width:100%;margin-top:16px}
.side-links{display:flex;flex-direction:column;gap:2px;margin-top:6px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--ink-600);padding:9px 0;border-bottom:1px dashed var(--line);
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--brand-600)}
.side-links i{font-size:11px;color:var(--ink-400)}

/* 文末信息 */
.article-foot{
  max-width:1080px;margin:34px auto 0;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:26px 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.foot-label{font-size:13px;color:var(--ink-400);margin-bottom:10px;display:block}
.back-links{display:flex;flex-wrap:wrap;gap:12px}

/* 通用组件 */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;background:var(--brand-100);color:var(--brand-600);
  font-size:12px;line-height:1;white-space:nowrap;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px rgba(27,95,217,.22)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,95,217,.28)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:var(--white);color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-light{background:#fff;color:var(--brand-600);border-color:#fff}
.btn-light:hover{background:#eef4ff;color:var(--brand-700);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:8px}

.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.post-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-100)}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:18px;line-height:1.5;color:var(--ink-900)}
.post-card:hover h3{color:var(--brand-600)}
.post-body p{font-size:14px;line-height:1.8;color:var(--ink-600)}
.post-meta{font-size:13px;color:var(--ink-400);margin-top:auto}

.cta-band{
  background:var(--brand-600);border-radius:16px;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 14px 34px rgba(27,95,217,.22);
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:10px}
.cta-band p{color:#D7E4FB;font-size:15px;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:#101C33;color:#B9C6DB;padding:66px 0 28px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand-mark{display:inline-block;color:#fff;font-size:20px;font-weight:700;margin-bottom:14px}
.footer-brand .brand-mark:hover{color:#8FB6FF}
.footer-brand p{font-size:14px;line-height:1.85;color:#9FB0C9;margin-bottom:16px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{color:#9FB0C9;font-size:14px}
.footer-list a:hover{color:#8FB6FF}
.footer-contact{font-size:14px;line-height:1.85;color:#9FB0C9}
.footer-contact strong{display:block;color:#fff;font-weight:600;margin-bottom:8px}
.footer-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8697B1;
}
.to-top{color:#8FB6FF;display:inline-flex;align-items:center;gap:6px}
.to-top:hover{color:#fff}
.site-footer .btn-sm{height:38px}

@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,760px);justify-content:center}
  .side-stack{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
}
@media (max-width:1023px){
  .side-rail{display:none}
  .topbar{display:flex}
  .main-wrap{margin-left:0}
  .grid-container{padding:0 20px}
  .section{padding:64px 0}
  .section-tight{padding:44px 0}
  .article-head h1{font-size:32px}
  .article-body{padding:32px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 28px}
  .site-footer{margin-top:64px}
}
@media (max-width:639px){
  body{font-size:15px;line-height:1.8}
  .grid-container{padding:0 16px}
  .section{padding:48px 0}
  .section-tight{padding:36px 0}
  .section-title{font-size:24px}
  .article-head h1{font-size:26px;margin:14px 0 16px}
  .lead{font-size:16px}
  .article-cover img{aspect-ratio:4/3}
  .article-body{padding:24px 18px;font-size:15px}
  .article-body h2{font-size:21px;margin:30px 0 14px}
  .article-body h3{font-size:18px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .btn{width:100%}
  .btn-sm{width:auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .side-stack{flex-direction:column}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E1B33;
  --ink-600:#43536B;
  --ink-400:#7A879C;
  --brand-600:#1B5FD9;
  --brand-700:#14499F;
  --brand-100:#EAF1FD;
  --accent-500:#F2724B;
  --bg-050:#F6F8FB;
  --white:#FFFFFF;
  --line:#E4EAF3;
  --shadow-1:0 6px 20px rgba(16,40,80,.06);
  --shadow-2:0 12px 32px rgba(16,40,80,.12);
  --shadow-nav:0 4px 16px rgba(16,40,80,.08);
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:8px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;line-height:1.32;}
h1{font-size:44px;line-height:1.28;}
h2{font-size:32px;}
h3{font-size:20px;}
p{margin:0;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;border:0;background:none;cursor:pointer;}
ul{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}
@media (min-width:1440px){
  .grid-container{max-width:1280px;padding-left:32px;padding-right:32px;}
}

/* ---------- 布局骨架 ---------- */
.app-shell{display:flex;align-items:flex-start;min-height:100vh;}
.app-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  display:none;
  width:240px;
  flex:0 0 240px;
  position:sticky;
  top:0;
  height:100vh;
  background:var(--white);
  border-right:1px solid var(--line);
  padding-bottom:20px;
  overflow-y:auto;
}
.side-brand{
  height:72px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:0 20px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  font-size:19px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:.01em;
}
.brand-mark:hover{color:var(--brand-600);}
.brand-sub{
  font-size:12px;
  color:var(--ink-400);
  line-height:1.5;
  margin-top:2px;
  letter-spacing:.02em;
}
.side-menu{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.side-menu a{
  position:relative;
  display:block;
  line-height:44px;
  padding:0 16px;
  border-radius:10px;
  color:var(--ink-600);
  font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.side-menu a:hover{background:var(--bg-050);color:var(--brand-600);}
.side-menu a.active{
  background:var(--brand-100);
  color:var(--brand-600);
  font-weight:600;
}
.side-menu a.active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-600);
}
.side-foot{padding:16px;border-top:1px solid var(--line);}

/* ---------- 移动顶栏 ---------- */
.topbar{
  position:sticky;
  top:0;
  z-index:60;
  height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:var(--white);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.topbar.is-scrolled{box-shadow:var(--shadow-nav);}
.burger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--ink-900);
  border-radius:10px;
  transition:background .2s ease;
}
.burger:hover{background:var(--bg-050);}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;
  top:0;right:0;
  width:82%;
  max-width:340px;
  height:100%;
  background:var(--white);
  z-index:90;
  transform:translateX(102%);
  transition:transform .26s ease;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-2);
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  height:60px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--ink-600);
}
.drawer-close:hover{background:var(--bg-050);color:var(--brand-600);}
.drawer-menu{padding:14px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.drawer-menu a{
  display:block;line-height:46px;padding:0 14px;border-radius:10px;
  color:var(--ink-600);font-size:15px;
}
.drawer-menu a.active{background:var(--brand-100);color:var(--brand-600);font-weight:600;}
.drawer-cta{padding:16px;border-top:1px solid var(--line);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,51,.42);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
  z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible;}
body.no-scroll{overflow:hidden;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  transition:transform .19s ease,background .19s ease,box-shadow .19s ease,color .19s ease,border-color .19s ease;
  white-space:nowrap;
}
.btn i{font-size:13px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 16px rgba(27,95,217,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(20,73,159,.28);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{background:var(--white);color:var(--brand-600);border:1px solid var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-600);
}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-600);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-soft{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(115deg,rgba(14,27,51,.86),rgba(20,73,159,.72)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  padding:64px 0 56px;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;right:-120px;bottom:-160px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.14),rgba(255,255,255,0) 68%);
}
.page-hero .crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.72);
  margin-bottom:20px;
}
.page-hero .crumb a{color:rgba(255,255,255,.82);}
.page-hero .crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.page-hero h1{color:#fff;max-width:820px;}
.page-hero .hero-lead{
  margin-top:18px;
  max-width:720px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
}
.hero-tags{margin-top:22px;}
.hero-stats{
  margin-top:40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.2);
  padding-top:24px;
}
.hero-stats .stat{
  padding:0 20px;
  border-left:1px solid rgba(255,255,255,.2);
}
.hero-stats .stat:first-child{padding-left:0;border-left:0;}
.hero-stats .stat b{
  display:block;
  font-size:28px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
}
.hero-stats .stat span{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:rgba(255,255,255,.72);
}

/* ---------- 区块通用 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--white);}
.section-dark{
  background:var(--ink-900);
  color:rgba(255,255,255,.78);
}
.section-dark h2,.section-dark h3{color:#fff;}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.sec-head-main{max-width:640px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-600);
  margin-bottom:12px;
}
.sec-head h2{margin-bottom:14px;}
.sec-desc{font-size:16px;line-height:1.85;color:var(--ink-600);max-width:680px;}
.section-dark .sec-desc{color:rgba(255,255,255,.72);}

/* ---------- 能力矩阵 ---------- */
.cap-grid{margin-top:-8px;}
.cap-card{
  height:100%;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:28px 24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cap-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D3E0F7;}
.cap-icon{
  width:46px;height:46px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-bottom:20px;
}
.cap-card h3{font-size:19px;margin-bottom:12px;}
.cap-card p{font-size:15px;line-height:1.85;color:var(--ink-600);}
.cap-card .mini-list{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.cap-card .mini-list li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  color:var(--ink-400);
  line-height:1.7;
}
.cap-card .mini-list li::before{
  content:"";
  position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-600);
  opacity:.55;
}

/* ---------- 对比区 ---------- */
.compare-card{
  height:100%;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px;
  box-shadow:var(--shadow-1);
}
.compare-card.is-brand{
  border:1px solid var(--brand-600);
  box-shadow:0 12px 32px rgba(27,95,217,.14);
}
.compare-card h3{font-size:20px;margin-bottom:8px;}
.compare-card .compare-sub{font-size:14px;color:var(--ink-400);margin-bottom:22px;}
.compare-list li{
  display:flex;gap:12px;
  padding:14px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  line-height:1.75;
}
.compare-list li:first-child{border-top:0;padding-top:0;}
.compare-list i{margin-top:6px;font-size:13px;}
.compare-list .ico-mute{color:var(--ink-400);}
.compare-list .ico-brand{color:var(--brand-600);}
.compare-foot{
  margin-top:22px;
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-400);
}

/* ---------- 图文区 ---------- */
.figure-frame{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--brand-100);
  background-size:cover;
  background-position:center;
}
.figure-frame img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-card);
}
.img-fallback{background:var(--brand-100);}
.check-list{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.check-list li{display:flex;gap:14px;font-size:15px;line-height:1.8;}
.check-list .check-ico{
  flex:0 0 30px;
  width:30px;height:30px;
  border-radius:9px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  margin-top:2px;
}
.check-list b{display:block;color:var(--ink-900);font-weight:600;font-size:16px;margin-bottom:2px;}

/* ---------- 流程（深色 band） ---------- */
.flow-grid{margin-top:-10px;}
.flow-step{
  height:100%;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  border-radius:var(--radius-card);
  padding:26px 22px;
  transition:background .2s ease,transform .2s ease;
}
.flow-step:hover{background:rgba(255,255,255,.08);transform:translateY(-3px);}
.flow-num{
  font-size:26px;
  font-weight:700;
  color:var(--accent-500);
  line-height:1;
  margin-bottom:16px;
  display:block;
}
.flow-step h3{font-size:18px;margin-bottom:10px;}
.flow-step p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  flex:0 0 22px;
  font-size:14px;
  color:var(--brand-600);
  transition:transform .22s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a-inner{
  padding:0 40px 24px 4px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-600);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-600);
  border-radius:16px;
  padding:48px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  box-shadow:0 18px 40px rgba(27,95,217,.22);
}
.cta-band h2{color:#fff;font-size:30px;max-width:560px;}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.86);font-size:16px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.7);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}
.cta-band .btn-primary{background:#fff;color:var(--brand-700);box-shadow:0 8px 20px rgba(9,32,72,.22);}
.cta-band .btn-primary:hover{background:#EAF1FD;color:var(--brand-700);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#101C33;
  color:rgba(255,255,255,.7);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand-mark{color:#fff;font-size:20px;}
.site-footer .brand-mark:hover{color:#9EC0F5;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px;}
.footer-brand .tag-row{margin-top:18px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-list a:hover{color:#9EC0F5;}
.footer-contact{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-contact strong{display:block;color:#fff;font-weight:600;margin-bottom:8px;font-size:14px;}
.footer-bottom{
  padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{color:rgba(255,255,255,.66);font-size:13px;display:inline-flex;align-items:center;gap:6px;}
.to-top:hover{color:#9EC0F5;}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .side-nav{display:flex;flex-direction:column;}
  .topbar{display:none;}
}
@media (max-width:1023px){
  h1{font-size:32px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:34px;}
  .page-hero{padding:48px 0 42px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 0;}
  .hero-stats .stat:nth-child(3){padding-left:0;border-left:0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:38px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  body{font-size:15px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .section{padding:48px 0;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .hero-stats{grid-template-columns:1fr;gap:0;}
  .hero-stats .stat{padding:16px 0;border-left:0;border-top:1px solid rgba(255,255,255,.18);}
  .hero-stats .stat:first-child{border-top:0;padding-top:0;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .btn-sm{width:100%;}
  .drawer-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .cap-card,.compare-card{padding:24px 20px;}
  .faq-a-inner{padding-right:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0E1B33;
  --ink-600:#43536B;
  --ink-400:#7A879C;
  --brand-600:#1B5FD9;
  --brand-700:#14499F;
  --brand-100:#EAF1FD;
  --accent-500:#F2724B;
  --bg-050:#F6F8FB;
  --white:#FFFFFF;
  --line:#E4EAF3;
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 6px 20px rgba(16,40,80,.06);
  --sh-2:0 12px 32px rgba(16,40,80,.12);
  --sh-3:0 4px 16px rgba(16,40,80,.08);
  --t:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink-900);font-weight:600;margin:0;line-height:1.3;letter-spacing:0;}
h1{font-size:44px;font-weight:700;}
h2{font-size:32px;}
h3{font-size:20px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t),transform var(--t);}
a:hover{color:var(--brand-700);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;
}
.grid-container{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
@media (min-width:1440px){.grid-container{max-width:1280px;}}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;align-items:flex-start;min-height:100vh;}
.content-wrap{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  width:240px;flex:0 0 240px;position:sticky;top:0;height:100vh;
  background:var(--white);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:0 20px 24px;overflow-y:auto;
}
.nav-brand{
  height:72px;display:flex;flex-direction:column;justify-content:center;gap:2px;
  border-bottom:1px solid var(--line);margin:0 -20px 18px;padding:0 24px;
}
.brand-mark{font-size:21px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;line-height:1.3;}
.brand-mark:hover{color:var(--brand-600);}
.brand-sub{font-size:12px;color:var(--ink-400);letter-spacing:.02em;line-height:1.4;}
.nav-menu{display:flex;flex-direction:column;gap:6px;}
.nav-menu a{
  position:relative;display:flex;align-items:center;height:44px;padding:0 14px 0 18px;
  border-radius:10px;color:var(--ink-600);font-size:15px;line-height:1.4;
}
.nav-menu a:hover{background:var(--brand-100);color:var(--brand-700);}
.nav-menu a.active{background:var(--brand-100);color:var(--brand-600);font-weight:600;}
.nav-menu a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;background:var(--brand-600);border-radius:0 3px 3px 0;
}
.nav-cta{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
.nav-note{font-size:12px;color:var(--ink-400);margin:10px 0 0;text-align:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform var(--t),background var(--t),color var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-primary{background:var(--brand-600);color:var(--white);box-shadow:0 6px 18px rgba(27,95,217,.22);}
.btn-primary:hover{background:var(--brand-700);color:var(--white);transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,95,217,.28);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{background:var(--white);color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;}
.link-arrow i{font-size:12px;transition:transform var(--t);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-accent{background:#FDEDE7;color:#C24A26;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 移动顶栏 + 抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:60;height:60px;background:var(--white);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 16px;transition:box-shadow var(--t);
}
.topbar.scrolled{box-shadow:var(--sh-3);}
.burger{
  width:44px;height:44px;border:0;background:transparent;color:var(--ink-900);
  font-size:18px;border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.burger:hover{background:var(--brand-100);color:var(--brand-600);}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--white);padding:18px 20px 28px;
  display:flex;flex-direction:column;gap:14px;transform:translateX(-102%);
  transition:transform 240ms ease;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:44px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;border:0;background:transparent;border-radius:10px;color:var(--ink-600);
  font-size:18px;cursor:pointer;
}
.drawer-close:hover{background:var(--brand-100);color:var(--brand-600);}
.drawer .nav-menu a{height:48px;font-size:16px;}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);}
body.nav-locked{overflow:hidden;}

/* ---------- 页头 Hero ---------- */
.cat-hero{background:var(--bg-050);border-bottom:1px solid var(--line);padding:56px 0 64px;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);margin-bottom:22px;}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb i{font-size:10px;}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-600);background:var(--brand-100);border-radius:999px;padding:5px 12px;margin-bottom:18px;
}
.cat-hero h1{margin-bottom:16px;}
.lead{font-size:17px;line-height:1.9;color:var(--ink-600);max-width:36em;margin-bottom:16px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-figure{
  border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--brand-100);
  box-shadow:var(--sh-1);aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-note{font-size:13px;color:var(--ink-400);margin-top:14px;}

/* ---------- 统计条 ---------- */
.stat-strip{padding:0 0 8px;}
.stat-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;
}
.stat-item{padding:28px 24px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{font-size:28px;font-weight:700;color:var(--brand-600);line-height:1.2;}
.stat-num span{font-size:15px;font-weight:600;margin-left:4px;}
.stat-label{font-size:13px;color:var(--ink-400);margin-top:6px;line-height:1.6;}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0 88px;}
.band-white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.section-head h2{margin-bottom:12px;}
.section-desc{font-size:15px;color:var(--ink-400);line-height:1.8;max-width:44em;margin:0;}
.section-label{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand-600);margin-bottom:12px;
}

/* ---------- 场景分栏 ---------- */
.scene-timeline{display:flex;flex-direction:column;gap:22px;}
.scene-row{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:236px 1fr;gap:0;transition:box-shadow var(--t),transform var(--t);
}
.scene-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.scene-tag{padding:30px 24px 30px 28px;border-right:1px solid var(--line);}
.scene-index{
  font-size:13px;font-weight:700;color:var(--brand-600);letter-spacing:.08em;display:block;margin-bottom:12px;
}
.scene-tag h3{font-size:19px;margin-bottom:10px;}
.scene-tag p{font-size:13px;color:var(--ink-400);line-height:1.7;margin:0;}
.scene-body{padding:30px 32px;}
.scene-body h4{font-size:18px;margin-bottom:10px;}
.scene-body > p{font-size:15px;line-height:1.85;margin-bottom:16px;}
.scene-points{display:flex;flex-direction:column;gap:8px;}
.scene-points li{
  position:relative;padding-left:22px;font-size:14px;line-height:1.75;color:var(--ink-600);
}
.scene-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-100);box-shadow:inset 0 0 0 2px var(--brand-600);
}

/* ---------- 流程时间轴 ---------- */
.flow{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.flow::before{
  content:"";position:absolute;left:0;right:0;top:19px;height:1px;background:var(--line);
}
.flow-step{position:relative;padding-top:56px;}
.flow-dot{
  position:absolute;top:6px;left:0;width:28px;height:28px;border-radius:50%;
  background:var(--white);border:1px solid var(--brand-600);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;z-index:1;
}
.flow-step h3{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--ink-400);line-height:1.75;margin:0;}
.flow-step .days{display:block;font-size:12px;font-weight:700;color:var(--accent-500);margin-top:10px;letter-spacing:.02em;}

/* ---------- 深色品牌 band ---------- */
.band-brand{background:var(--brand-600);padding:80px 0;}
.band-brand h2,.band-brand h3{color:var(--white);}
.band-brand p{color:rgba(255,255,255,.86);}
.band-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.quote-block{
  background:rgba(255,255,255,.1);border-left:3px solid var(--white);border-radius:0 12px 12px 0;
  padding:22px 26px;margin-top:26px;
}
.quote-block p{font-size:15px;line-height:1.9;margin-bottom:12px;color:var(--white);}
.quote-block cite{font-style:normal;font-size:13px;color:rgba(255,255,255,.72);}
.band-figure{border-radius:16px;overflow:hidden;aspect-ratio:5/4;border:1px solid rgba(255,255,255,.22);}
.band-figure img{width:100%;height:100%;object-fit:cover;}
.assure-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px;}
.assure-item{
  background:rgba(255,255,255,.1);border-radius:12px;padding:16px 18px;font-size:14px;color:var(--white);
  display:flex;gap:10px;align-items:flex-start;line-height:1.7;
}
.assure-item i{color:var(--white);font-size:14px;margin-top:5px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);background:transparent;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:transparent;border:0;padding:22px 4px;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand-600);font-size:12px;
  transition:transform var(--t),background var(--t),border-color var(--t);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-100);border-color:var(--brand-100);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease;}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-600);padding:0 4px 24px;margin:0;max-width:44em;}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-100);border-radius:16px;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px;margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--ink-600);margin:0;max-width:38em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:#101C33;color:#B7C3D6;margin-top:88px;padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-mark{color:#fff;font-size:20px;display:inline-block;margin-bottom:14px;}
.footer-brand .brand-mark:hover{color:#8FB6F5;}
.footer-brand p{font-size:14px;line-height:1.85;color:#A6B4CA;margin-bottom:16px;max-width:30em;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-list a{font-size:14px;color:#B7C3D6;}
.footer-list a:hover{color:#8FB6F5;}
.footer-contact{font-size:14px;line-height:1.85;color:#A6B4CA;}
.footer-contact strong{display:block;color:#fff;font-size:14px;margin-bottom:8px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;font-size:13px;color:#8C9AB3;
}
.to-top{color:#B7C3D6;display:inline-flex;align-items:center;gap:8px;}
.to-top:hover{color:#8FB6F5;}
.site-footer .badge{background:rgba(255,255,255,.12);color:#DCE6F7;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .layout{display:block;}
  .side-nav{display:none;}
  .topbar{display:flex;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .section-tight{padding:48px 0 64px;}
  .cat-hero{padding:36px 0 48px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .stat-card{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .scene-row{grid-template-columns:1fr;}
  .scene-tag{border-right:0;border-bottom:1px solid var(--line);padding:24px 26px;}
  .scene-body{padding:24px 26px 28px;}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .flow::before{display:none;}
  .band-grid{grid-template-columns:1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  body{font-size:15px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  h3{font-size:18px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .stat-card{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .flow{grid-template-columns:1fr;}
  .assure-list{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .faq-q{font-size:15px;gap:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .scene-row:hover,.btn:hover{transform:none;}
}

/* roulang page: category3 */
/* =========================================================
   hth网站 · 设计变量
   ========================================================= */
:root{
  --ink-900:#0E1B33;
  --ink-600:#43536B;
  --ink-400:#7A879C;
  --brand-600:#1B5FD9;
  --brand-700:#14499F;
  --brand-100:#EAF1FD;
  --accent-500:#F2724B;
  --bg-050:#F6F8FB;
  --white:#FFFFFF;
  --line:#E4EAF3;
  --deep:#101C33;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:8px;
  --sh-1:0 6px 20px rgba(16,40,80,.06);
  --sh-2:0 12px 32px rgba(16,40,80,.12);
  --sh-3:0 4px 16px rgba(16,40,80,.08);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px;
  --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --nav-w:240px;
}

/* =========================================================
   reset / base
   ========================================================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-050);
  color:var(--ink-600);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:650;line-height:1.3;letter-spacing:0;}
h1{font-size:44px;}
h2{font-size:32px;}
h3{font-size:20px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
strong{font-weight:650;color:var(--ink-900);}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
body.no-scroll{overflow:hidden;}

/* =========================================================
   容器与板块
   ========================================================= */
.grid-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1440px){
  .grid-container{max-width:1280px;padding-left:32px;padding-right:32px;}
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--white);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head--wide{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:32px;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand-600);
  font-weight:650;
  margin-bottom:10px;
  text-transform:none;
}
.section-head h2{margin-bottom:14px;}
.section-desc{font-size:16px;color:var(--ink-600);max-width:720px;margin:0;}
.section-link{
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.section-link i{transition:transform .2s ease;}
.section-link:hover i{transform:translateX(3px);}
.section-link:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

/* =========================================================
   按钮
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 4px 14px rgba(27,95,217,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,95,217,.28);}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 5px 14px rgba(27,95,217,.24);}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);}
.btn-light{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.48);}
.btn-light:hover{background:rgba(255,255,255,.20);color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* =========================================================
   徽章 / 标签
   ========================================================= */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* =========================================================
   左侧竖向导航
   ========================================================= */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--white);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  z-index:70;
  overflow-y:auto;
}
.side-brand{
  min-height:72px;
  padding:16px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  font-size:19px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:.01em;
  line-height:1.2;
}
.brand-mark:hover{color:var(--brand-600);}
.brand-sub{
  display:block;
  font-size:12px;
  color:var(--ink-400);
  font-weight:400;
  margin-top:4px;
  letter-spacing:0;
}
.side-nav-list{padding:16px 12px;display:flex;flex-direction:column;gap:4px;flex:1;}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 14px 0 16px;
  border-radius:10px;
  color:var(--ink-600);
  font-size:15px;
  transition:background-color .18s ease,color .18s ease;
}
.side-link i{width:18px;text-align:center;font-size:14px;color:var(--ink-400);transition:color .18s ease;}
.side-link::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:transparent;
  transition:background-color .18s ease;
}
.side-link:hover{background:var(--bg-050);color:var(--ink-900);}
.side-link:hover i{color:var(--brand-600);}
.side-link.is-active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.side-link.is-active i{color:var(--brand-600);}
.side-link.is-active::before{background:var(--brand-600);}
.side-cta{padding:16px 20px 24px;border-top:1px solid var(--line);}
.side-cta p{font-size:13px;color:var(--ink-400);margin:0 0 12px;line-height:1.7;}
.drawer-close{display:none;width:36px;height:36px;border-radius:10px;color:var(--ink-600);background:var(--bg-050);align-items:center;justify-content:center;}
.drawer-close:hover{background:var(--brand-100);color:var(--brand-700);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(14,27,51,.44);
  opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;
  z-index:65;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* =========================================================
   页面主区域 / 移动顶栏
   ========================================================= */
.page-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:60;
  height:60px;
  padding:0 16px;
  background:var(--white);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  transition:box-shadow .2s ease;
}
.topbar.is-scrolled{box-shadow:var(--sh-3);}
.topbar .brand-mark{font-size:17px;}
.burger{
  width:44px;height:44px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--ink-900);
  font-size:18px;
  transition:background-color .18s ease,color .18s ease;
}
.burger:hover{background:var(--brand-100);color:var(--brand-700);}

/* =========================================================
   内页页头横幅
   ========================================================= */
.page-hero{
  position:relative;
  padding:80px 0 64px;
  color:#fff;
  background-image:linear-gradient(105deg,rgba(14,27,51,.90) 0%,rgba(14,27,51,.78) 48%,rgba(16,28,51,.62) 100%),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.breadcrumb i{font-size:10px;color:rgba(255,255,255,.5);}
.hero-brand{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  font-weight:600;
  color:#9FC2FF;
  margin-bottom:12px;
}
.page-hero h1{
  color:#fff;
  max-width:760px;
  margin-bottom:18px;
}
.page-hero .hero-lead{
  max-width:660px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
  margin:0 0 28px;
}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  margin-top:36px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.stat-cell{
  background:rgba(255,255,255,.06);
  padding:20px 18px;
  backdrop-filter:blur(2px);
}
.stat-num{
  display:block;
  font-size:28px;
  font-weight:700;
  color:#fff;
  line-height:1.2;
  letter-spacing:0;
}
.stat-num em{font-style:normal;font-size:16px;color:#9FC2FF;margin-left:4px;}
.stat-label{display:block;font-size:13px;color:rgba(255,255,255,.74);margin-top:6px;}

/* =========================================================
   筛选标签
   ========================================================= */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:28px;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.chip{
  height:38px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--white);
  color:var(--ink-600);
  font-size:14px;
  font-weight:500;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-700);transform:translateY(-1px);}
.chip.is-active{background:var(--brand-100);border-color:var(--brand-600);color:var(--brand-700);font-weight:600;}

/* =========================================================
   案例卡片网格
   ========================================================= */
.case-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.case-card{
  display:flex;
  flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.case-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D2DEF2;}
.case-card.is-hidden{display:none;}
.case-media{
  position:relative;
  background:var(--brand-100);
  aspect-ratio:16/10;
  overflow:hidden;
}
.case-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-tag{
  position:absolute;
  top:12px;left:12px;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(255,255,255,.94);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
}
.case-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.case-body h3{font-size:18px;line-height:1.45;}
.case-body p{font-size:14px;line-height:1.8;color:var(--ink-600);margin:0;}
.case-metric{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:14px 16px;
  border-radius:10px;
  background:var(--bg-050);
  border:1px solid var(--line);
}
.case-metric strong{font-size:22px;color:var(--accent-500);letter-spacing:0;line-height:1.2;}
.case-metric span{font-size:13px;color:var(--ink-400);}
.card-link{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-link i{font-size:12px;transition:transform .2s ease;}
.card-link:hover i{transform:translateX(3px);}
.card-link:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;}

.filter-empty{
  display:none;
  margin-top:24px;
  padding:28px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--white);
  color:var(--ink-400);
  font-size:15px;
  text-align:center;
}
.filter-empty.is-visible{display:block;}

/* =========================================================
   深色引用 band
   ========================================================= */
.quote-band{
  background:var(--deep);
  color:#C6D2E6;
  padding:88px 0;
}
.quote-grid{
  display:grid;
  grid-template-columns:1.55fr .95fr;
  gap:48px;
  align-items:center;
}
.quote-band .eyebrow{color:#8FB6FF;}
.quote-text{
  font-size:24px;
  line-height:1.7;
  color:#fff;
  font-weight:600;
  margin:0 0 24px;
  padding-left:22px;
  border-left:3px solid var(--brand-600);
}
.quote-author{font-size:14px;color:#8FA0BC;padding-left:25px;}
.quote-author strong{display:block;color:#fff;font-size:15px;margin-bottom:2px;}
.quote-figure{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);
  padding:26px;
}
.quote-figure .figure-label{font-size:13px;color:#8FA0BC;display:block;margin-bottom:14px;}
.figure-line{
  display:flex;
  align-items:baseline;
  gap:12px;
  font-size:15px;
  color:#C6D2E6;
  padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.figure-line:last-child{border-bottom:0;padding-bottom:0;}
.figure-line b{color:var(--accent-500);font-size:20px;font-weight:700;}
.figure-line .arrow{color:#8FA0BC;font-size:13px;}

/* =========================================================
   合作流程步骤
   ========================================================= */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  position:relative;
}
.step-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 24px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.step-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);}
.step-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:10px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14px;line-height:1.8;margin:0 0 14px;}
.step-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  color:var(--ink-600);
  line-height:1.8;
}
.step-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand-600);
}

/* =========================================================
   合作保障（四格）
   ========================================================= */
.assure-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.assure-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.assure-item:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D2DEF2;}
.assure-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  margin-bottom:16px;
}
.assure-item h3{font-size:17px;margin-bottom:8px;}
.assure-item p{font-size:14px;line-height:1.8;margin:0;}

/* =========================================================
   FAQ
   ========================================================= */
.faq{
  max-width:860px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--sh-1);
  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 26px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
  transition:background-color .18s ease,color .18s ease;
}
.faq-q:hover{background:var(--bg-050);color:var(--brand-700);}
.faq-q i{
  flex:0 0 auto;
  color:var(--brand-600);
  font-size:15px;
  transition:transform .2s ease;
}
.faq-item.is-open .faq-q{color:var(--brand-700);}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{
  padding:0 26px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-600);
  margin:0;
}

/* =========================================================
   CTA 横幅
   ========================================================= */
.cta-band{
  background:var(--brand-600);
  border-radius:16px;
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
  box-shadow:0 18px 40px rgba(27,95,217,.22);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;margin:0;max-width:620px;}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  background:var(--deep);
  color:#AFBBD0;
  padding:64px 0 0;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand .brand-mark{color:#fff;font-size:20px;}
.footer-brand p{font-size:14px;line-height:1.85;color:#AFBBD0;margin:16px 0 18px;max-width:340px;}
.site-footer .badge{background:rgba(255,255,255,.09);color:#BFD6FF;}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px;}
.footer-list a{
  display:block;
  font-size:14px;
  color:#AFBBD0;
  padding:7px 0;
  transition:color .18s ease,transform .18s ease;
}
.footer-list a:hover{color:#8FC0FF;transform:translateX(3px);}
.footer-contact{font-size:14px;line-height:1.85;color:#AFBBD0;}
.footer-contact strong{color:#fff;display:block;margin-bottom:8px;font-size:14px;font-weight:600;}
.site-footer .btn-light{border-color:rgba(255,255,255,.34);}
.footer-bottom{
  margin-top:52px;
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:#8A99B4;
  flex-wrap:wrap;
}
.to-top{color:#AFBBD0;font-size:13px;display:inline-flex;align-items:center;gap:6px;}
.to-top:hover{color:#fff;}
.to-top i{font-size:11px;transition:transform .2s ease;}
.to-top:hover i{transform:translateY(-3px);}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1279px){
  .assure-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .side-nav{
    transform:translateX(-100%);
    transition:transform .25s ease;
    width:82%;
    max-width:320px;
    box-shadow:var(--sh-2);
  }
  .side-nav.is-open{transform:translateX(0);}
  .drawer-close{display:inline-flex;}
  .page-wrap{margin-left:0;}
  .topbar{display:flex;}
  .page-hero{padding:56px 0 48px;}
  .section{padding:64px 0;}
  .section--tight{padding:52px 0;}
  .quote-band{padding:64px 0;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .page-hero .hero-lead{font-size:16px;}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:1fr;gap:32px;}
  .quote-text{font-size:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:36px 32px;flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .section{padding:52px 0;}
  .section-head--wide{flex-direction:column;align-items:flex-start;gap:16px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;}
  .assure-grid{grid-template-columns:1fr;}
  .cta-band h2{font-size:22px;}
  .faq-q{padding:18px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 20px;}
  .quote-text{padding-left:16px;font-size:18px;}
  .quote-author{padding-left:19px;}
}
@media (max-width:519px){
  body{font-size:15px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  h1{font-size:26px;}
  h2{font-size:22px;}
  h3{font-size:17px;}
  .case-grid{grid-template-columns:1fr;}
  .chip-row{gap:8px;}
  .chip{height:34px;padding:0 14px;font-size:13px;}
  .btn{width:100%;}
  .btn-row{flex-direction:column;align-items:stretch;gap:12px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:28px 20px;border-radius:14px;}
  .stat-strip{grid-template-columns:1fr 1fr;}
  .stat-cell{padding:16px 14px;}
  .stat-num{font-size:22px;}
  .case-body{padding:18px 18px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .case-card:hover,.assure-item:hover,.step-card:hover,.btn:hover{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --ink-900:#0E1B33;
  --ink-600:#43536B;
  --ink-400:#7A879C;
  --brand-600:#1B5FD9;
  --brand-700:#14499F;
  --brand-100:#EAF1FD;
  --accent-500:#F2724B;
  --bg-050:#F6F8FB;
  --white:#FFFFFF;
  --line:#E4EAF3;
  --r-card:14px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 6px 20px rgba(16,40,80,.06);
  --sh-2:0 12px 32px rgba(16,40,80,.12);
  --sh-3:0 4px 16px rgba(16,40,80,.08);
  --nav-w:240px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",Inter,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-600);
  background:var(--bg-050);
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink-900);font-weight:600;line-height:1.3;margin:0;}
h1{font-size:44px;letter-spacing:-.01em;}
h2{font-size:32px;}
h3{font-size:20px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}

:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1160px;padding-left:24px;padding-right:24px;}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;align-items:flex-start;min-height:100vh;}
.main-wrap{flex:1 1 auto;min-width:0;}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  flex:0 0 var(--nav-w);
  width:var(--nav-w);
  height:100vh;
  position:sticky;
  top:0;
  background:var(--white);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:0 16px 16px;
  overflow-y:auto;
  z-index:50;
}
.sidenav-brand{
  height:72px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:0 8px;
  border-bottom:1px solid var(--line);
  margin-bottom:16px;
}
.brand-mark{
  font-size:19px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
  line-height:1.2;
}
.brand-mark:hover{color:var(--brand-600);}
.brand-sub{font-size:12px;color:var(--ink-400);letter-spacing:.04em;margin-top:2px;}

.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 16px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--ink-600);
  position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-item i{font-size:14px;color:var(--ink-400);width:16px;text-align:center;transition:color .2s ease;}
.nav-item:hover{background:var(--bg-050);color:var(--ink-900);}
.nav-item:hover i{color:var(--brand-600);}
.nav-item.is-active{
  background:var(--brand-100);
  color:var(--brand-600);
  font-weight:600;
}
.nav-item.is-active i{color:var(--brand-600);}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand-600);
}
.sidenav-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
.sidenav-foot p{font-size:12.5px;color:var(--ink-400);line-height:1.7;margin-bottom:12px;}
.sidenav-close{
  display:none;
  position:absolute;
  right:12px;top:16px;
  width:36px;height:36px;
  border:1px solid var(--line);
  background:var(--white);
  border-radius:10px;
  color:var(--ink-600);
  cursor:pointer;
}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:60;
  height:60px;
  padding:0 16px;
  background:var(--white);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  transition:box-shadow .2s ease;
}
.topbar.is-scrolled{box-shadow:var(--sh-3);}
.burger{
  width:44px;height:44px;
  border:1px solid var(--line);
  background:var(--white);
  border-radius:10px;
  color:var(--ink-900);
  font-size:17px;
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease,border-color .2s ease;
}
.burger:hover{background:var(--brand-100);border-color:var(--brand-100);color:var(--brand-600);}
.scrim{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(14,27,51,.44);
  z-index:55;
  opacity:0;
  transition:opacity .22s ease;
}
.scrim.is-open{display:block;opacity:1;}

body.no-scroll{overflow:hidden;}

/* ---------- 页头 ---------- */
.page-head{
  background:var(--bg-050);
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
}
.crumbs{
  font-size:13px;
  color:var(--ink-400);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:22px;
  flex-wrap:wrap;
}
.crumbs a{color:var(--ink-400);}
.crumbs a:hover{color:var(--brand-600);}
.crumbs span.sep{color:#C6D1E2;}

.head-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand-600);
  background:var(--brand-100);
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:16px;
}
.page-head h1{margin-bottom:16px;}
.lead{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-600);
  max-width:38em;
  margin-bottom:26px;
}
.head-actions{display:flex;gap:12px;flex-wrap:wrap;}
.head-figure{
  margin:0;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--brand-100);
}
.head-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 18px rgba(27,95,217,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(27,95,217,.28);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{background:var(--white);color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand-600);
}
.text-link i{font-size:12px;transition:transform .2s ease;}
.text-link:hover{color:var(--brand-700);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 区块 ---------- */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.section-head .eyebrow{margin-bottom:12px;}
.section-desc{
  font-size:15.5px;
  color:var(--ink-400);
  margin-top:12px;
  max-width:46em;
  line-height:1.8;
}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}

/* ---------- 价格卡 ---------- */
.price-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:stretch;
}
.price-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:32px 28px;
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.price-card--featured{
  border-color:var(--brand-600);
  box-shadow:0 14px 34px rgba(27,95,217,.14);
}
.price-card--featured:hover{box-shadow:0 20px 44px rgba(27,95,217,.2);}
.ribbon{
  position:absolute;
  top:-13px;left:28px;
  background:var(--accent-500);
  color:#fff;
  font-size:12px;
  font-weight:600;
  padding:4px 14px;
  border-radius:999px;
  letter-spacing:.02em;
}
.plan-name{font-size:19px;color:var(--ink-900);font-weight:600;margin-bottom:6px;}
.plan-for{font-size:13.5px;color:var(--ink-400);margin-bottom:22px;line-height:1.7;min-height:44px;}
.price-value{
  display:flex;
  align-items:baseline;
  gap:6px;
  color:var(--ink-900);
  font-weight:700;
  margin-bottom:6px;
}
.price-value .num{font-size:34px;line-height:1;color:var(--accent-500);font-family:Inter,"PingFang SC",sans-serif;}
.price-value .unit{font-size:15px;color:var(--ink-400);font-weight:400;}
.price-note{font-size:12.5px;color:var(--ink-400);margin-bottom:24px;}
.plan-list{border-top:1px solid var(--line);padding-top:20px;margin-bottom:28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.plan-list li{
  font-size:14.5px;
  color:var(--ink-600);
  display:flex;
  gap:10px;
  align-items:flex-start;
  line-height:1.7;
}
.plan-list li i{color:var(--brand-600);font-size:13px;margin-top:6px;}
.price-card--featured .plan-list li i{color:var(--brand-600);}

/* ---------- 对比列表 ---------- */
.compare{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--white);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.compare-row{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:16px;
  padding:18px 24px;
  align-items:center;
  border-bottom:1px solid var(--line);
  font-size:14.5px;
}
.compare-row:last-child{border-bottom:0;}
.compare-row:nth-child(odd){background:var(--bg-050);}
.compare-head{
  background:var(--ink-900) !important;
  color:#fff;
  font-weight:600;
  font-size:14px;
  letter-spacing:.02em;
}
.compare-head .compare-cell{color:#fff;}
.compare-name{color:var(--ink-900);font-weight:600;}
.compare-cell{color:var(--ink-600);}
.compare-cell .mark{color:var(--brand-600);font-weight:600;}
.compare-cell .dash{color:var(--ink-400);}
.cell-key{display:none;color:var(--ink-400);font-size:12.5px;margin-right:6px;}

/* ---------- 步骤条 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  position:relative;
}
.step{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step-num{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--brand-100);
  color:var(--brand-600);
  font-weight:700;
  font-size:15px;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
  font-family:Inter,"PingFang SC",sans-serif;
}
.step h3{font-size:16.5px;margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--ink-400);line-height:1.75;margin:0;}

/* ---------- 指标条 ---------- */
.stat-band{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding:32px 8px;
}
.stat-item{
  padding:0 24px;
  border-right:1px solid var(--line);
  text-align:left;
}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-size:28px;
  font-weight:700;
  color:var(--brand-600);
  line-height:1.2;
  font-family:Inter,"PingFang SC",sans-serif;
}
.stat-label{font-size:13px;color:var(--ink-400);margin-top:6px;line-height:1.6;}

/* ---------- 服务内容 ---------- */
.serve-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.serve-card{display:flex;gap:18px;align-items:flex-start;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease;}
.serve-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.serve-icon{
  flex:0 0 44px;
  width:44px;height:44px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;
}
.serve-card h3{font-size:17px;margin-bottom:8px;}
.serve-card p{font-size:14px;color:var(--ink-400);line-height:1.75;margin:0;}

/* ---------- FAQ ---------- */
.faq{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:8px 28px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  background:none;
  border:0;
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  flex:0 0 22px;
  font-size:14px;
  color:var(--brand-600);
  transition:transform .2s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a-inner{
  padding:0 0 22px;
  font-size:15px;
  color:var(--ink-600);
  line-height:1.85;
  max-width:44em;
}

/* ---------- 表单 ---------- */
.form-wrap{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:0;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.form-side{
  padding:44px 40px;
  background:var(--brand-600);
  color:#fff;
}
.form-side h2{color:#fff;font-size:26px;margin-bottom:14px;}
.form-side p{color:rgba(255,255,255,.86);font-size:14.5px;line-height:1.85;}
.form-side ul{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.form-side li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.9);align-items:flex-start;line-height:1.7;}
.form-side li i{margin-top:6px;font-size:12px;color:rgba(255,255,255,.9);}
.form-body{padding:44px 40px;}
.form-body h3{font-size:20px;margin-bottom:8px;}
.form-body .form-sub{font-size:14px;color:var(--ink-400);margin-bottom:26px;}
.field{margin-bottom:20px;}
.field label{
  display:block;
  font-size:13px;
  color:var(--ink-600);
  margin-bottom:8px;
  font-weight:600;
}
.field input,
.field select,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  font-size:15px;
  color:var(--ink-900);
  background:var(--white);
  font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(27,95,217,.16);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-note{font-size:13px;color:var(--ink-400);margin-top:14px;line-height:1.7;}
.form-msg{
  display:none;
  margin-top:18px;
  padding:14px 16px;
  border-radius:var(--r-input);
  background:var(--brand-100);
  border:1px solid #CDDEFB;
  color:var(--brand-700);
  font-size:14px;
  line-height:1.7;
}
.form-msg.is-show{display:block;}

/* ---------- CTA 横幅 ---------- */
.cta-banner{
  background:var(--brand-600);
  border-radius:16px;
  padding:48px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  color:#fff;
  box-shadow:0 18px 40px rgba(27,95,217,.22);
}
.cta-banner h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-banner p{color:rgba(255,255,255,.86);font-size:15px;margin:0;max-width:44em;line-height:1.8;}
.cta-banner .btn-cta{
  flex:0 0 auto;
  background:#fff;
  color:var(--brand-700);
  border-color:#fff;
}
.cta-banner .btn-cta:hover{background:#EAF1FD;color:var(--brand-700);transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{background:#101C33;color:#A9B6CC;padding:64px 0 0;margin-top:8px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.site-footer .brand-mark{color:#fff;display:inline-block;margin-bottom:14px;}
.site-footer .brand-mark:hover{color:#8FB6FF;}
.footer-brand p{font-size:14px;line-height:1.85;color:#93A3BD;max-width:30em;margin-bottom:18px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(27,95,217,.18);
  color:#9CC0FF;
  font-size:12px;
  letter-spacing:.02em;
}
.footer-title{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-list a{font-size:14px;color:#93A3BD;transition:color .2s ease;}
.footer-list a:hover{color:#8FB6FF;}
.footer-contact{font-size:14px;line-height:1.85;color:#93A3BD;}
.footer-contact strong{display:block;color:#fff;font-weight:600;margin-bottom:8px;font-size:14px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:#8394AE;
  flex-wrap:wrap;
}
.to-top{color:#93A3BD;display:inline-flex;align-items:center;gap:6px;font-size:13px;}
.to-top:hover{color:#8FB6FF;}
.to-top i{font-size:11px;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  h1{font-size:38px;}
  h2{font-size:28px;}
  .section{padding:76px 0;}
}

@media screen and (max-width:1023px){
  .sidenav{
    position:fixed;
    top:0;left:0;
    height:100%;
    width:284px;
    flex:none;
    transform:translateX(-100%);
    transition:transform .24s ease;
    box-shadow:0 0 40px rgba(16,40,80,.16);
    z-index:70;
    padding-top:8px;
  }
  .sidenav.is-open{transform:translateX(0);}
  .sidenav-close{display:flex;align-items:center;justify-content:center;}
  .topbar{display:flex;}
  .head-grid{grid-template-columns:1fr;gap:36px;}
  .head-figure{max-width:560px;}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card--featured{order:-1;}
  .plan-for{min-height:0;}
  .steps{grid-template-columns:1fr 1fr;gap:16px;}
  .stat-band{grid-template-columns:1fr 1fr;padding:8px;}
  .stat-item{border-right:0;padding:22px 20px;border-bottom:1px solid var(--line);}
  .stat-item:nth-child(odd){border-right:1px solid var(--line);}
  .stat-item:nth-last-child(-n+2){border-bottom:0;}
  .serve-grid{grid-template-columns:1fr;}
  .form-wrap{grid-template-columns:1fr;}
  .form-side{padding:36px 28px;}
  .form-body{padding:36px 28px;}
  .cta-banner{flex-direction:column;align-items:flex-start;padding:36px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .compare-row{grid-template-columns:1fr 1fr;gap:12px 16px;padding:20px 20px;}
  .compare-head{display:none;}
  .compare-name{grid-column:1 / -1;font-size:15px;padding-bottom:2px;border-bottom:1px dashed var(--line);}
  .cell-key{display:inline;}
}

@media screen and (max-width:639px){
  body{font-size:15px;}
  .grid-container{padding-left:18px;padding-right:18px;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .page-head{padding:36px 0 40px;}
  .lead{font-size:15.5px;}
  .section{padding:48px 0;}
  .section--tight{padding:44px 0;}
  .card{padding:22px;}
  .price-card{padding:26px 22px;}
  .faq{padding:4px 20px;}
  .faq-q{font-size:15.5px;padding:18px 0;}
  .steps{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;}
  .stat-item{border-right:0 !important;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .field-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .head-actions .btn{width:100%;}
  .cta-banner{padding:30px 22px;border-radius:14px;}
  .cta-banner h2{font-size:22px;}
  .cta-banner .btn-cta{width:100%;}
  .compare-row{grid-template-columns:1fr;}
  .compare-name{grid-column:auto;}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .btn:hover,.card:hover,.price-card:hover,.step:hover,.serve-card:hover{transform:none;}
}