/* roulang page: index */
:root{
  --brand:#1a6cf0;
  --brand-dark:#1257cc;
  --brand-deep:#0f3f95;
  --brand-soft:#e9f1ff;
  --accent:#ff7a26;
  --accent-dark:#e6641a;
  --accent-soft:#fff2e8;
  --teal:#10b39a;
  --teal-soft:#e3f8f4;
  --bg:#f4f7fc;
  --surface:#ffffff;
  --text:#1a2130;
  --text-2:#59637a;
  --text-3:#8b94a8;
  --line:#e4e9f2;
  --radius-lg:14px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow:0 10px 28px rgba(20,60,140,.08);
  --shadow-hover:0 18px 44px rgba(20,60,140,.16);
  --shadow-brand:0 10px 24px rgba(26,108,240,.22);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
a:focus-visible,button:focus-visible{outline:3px solid rgba(26,108,240,.35);outline-offset:2px;border-radius:6px;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.34;letter-spacing:-.01em;color:var(--text);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(20,60,140,.10);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:74px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  background:linear-gradient(135deg,#2a7bff 0%,#1257cc 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(26,108,240,.28);
  flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.2px;}
.brand-text em{font-size:12px;font-style:normal;color:var(--text-3);letter-spacing:.4px;}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  display:inline-flex;align-items:center;height:42px;padding:0 18px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.main-nav a:hover{color:var(--brand);background:var(--brand-soft);}
.main-nav a.is-active{color:var(--brand);background:var(--brand-soft);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;padding:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle:hover{border-color:rgba(26,108,240,.4);background:var(--brand-soft);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-mask{
  position:fixed;inset:0;background:rgba(18,30,55,.4);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),visibility .22s var(--ease);z-index:150;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .18s var(--ease),border-color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:0 14px 30px rgba(26,108,240,.3);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(26,108,240,.24);}
.btn-ghost{background:#fff;color:var(--brand);border-color:rgba(26,108,240,.36);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:rgba(26,108,240,.6);}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(255,122,38,.28);}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:15px;color:var(--brand);}
.link-arrow::after{
  content:"";width:7px;height:7px;border-top:2px solid currentColor;border-right:2px solid currentColor;
  transform:rotate(45deg);transition:transform .2s var(--ease);margin-left:1px;
}
.link-arrow:hover::after{transform:rotate(45deg) translate(2px,-2px);}
.link-arrow--muted{color:var(--text-2);font-weight:500;}
.link-arrow--muted:hover{color:var(--brand);}

/* ===== 通用标签 ===== */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 15px;margin-bottom:22px;
  border-radius:999px;background:#fff;border:1px solid rgba(26,108,240,.18);
  color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.3px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep);
  white-space:nowrap;
}
.badge--accent{background:var(--accent-soft);color:var(--accent-dark);}
.badge--teal{background:var(--teal-soft);color:#0a8774;}

/* ===== 首屏 ===== */
.hero{
  position:relative;padding:76px 0 64px;overflow:hidden;
  background:linear-gradient(180deg,#eef4ff 0%,#f4f7fc 100%);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(26,108,240,.14) 0%,rgba(26,108,240,0) 70%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero h1{font-size:38px;line-height:1.32;margin-bottom:18px;letter-spacing:-.02em;}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.8;max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-bottom:42px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  padding-top:24px;border-top:1px solid rgba(26,108,240,.16);
}
.hero-stats li{padding:0 18px;border-left:1px solid rgba(26,108,240,.16);}
.hero-stats li:first-child{padding-left:0;border-left:0;}
.hero-stats strong{display:block;font-size:26px;font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-stats span{display:block;font-size:13px;color:var(--text-3);margin-top:2px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;
  box-shadow:0 26px 60px rgba(20,60,140,.20);
}
.hero-badge{
  position:absolute;left:-18px;bottom:28px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:16px 20px;box-shadow:0 18px 40px rgba(20,60,140,.16);
  display:flex;flex-direction:column;gap:2px;min-width:170px;
}
.hero-badge strong{font-size:22px;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-badge span{font-size:12.5px;color:var(--text-3);}

/* ===== 板块 ===== */
.section{padding:90px 0;}
.section--soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section--tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:46px;}
.section-head h2{font-size:28px;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;margin:0;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;max-width:none;}
.section-head--row > div{max-width:680px;}

/* ===== 服务入口 1大2小 ===== */
.service-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:stretch;}
.service-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(26,108,240,.3);}
.service-card--main{
  grid-row:span 2;padding:34px;border-color:rgba(26,108,240,.35);
  box-shadow:0 18px 44px rgba(26,108,240,.14);
}
.service-card--main:hover{border-color:rgba(26,108,240,.55);}
.service-icon{
  width:48px;height:48px;border-radius:var(--radius-md);
  background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.service-card--main .service-icon{background:var(--brand);width:54px;height:54px;}
.service-icon svg{width:24px;height:24px;}
.service-card h3{font-size:20px;line-height:1.4;}
.service-card--main h3{font-size:23px;}
.service-card p{color:var(--text-2);font-size:15px;line-height:1.85;margin:0;flex:1;}
.service-figure{margin-top:auto;border-radius:var(--radius-md);overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft);}
.service-figure img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.service-card--main:hover .service-figure img{transform:scale(1.04);}

/* ===== 热门项目卡片 ===== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.topic-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(26,108,240,.32);}
.topic-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.topic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.topic-card:hover .topic-thumb img{transform:scale(1.05);}
.topic-thumb .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-deep);box-shadow:0 6px 14px rgba(20,60,140,.14);}
.topic-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.topic-body h3{font-size:18px;}
.topic-body p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0;flex:1;}

/* ===== 流程 + 进度 ===== */
.flow-wrap{display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:start;}
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:34px 28px;}
.step{position:relative;padding-left:64px;}
.step-num{
  position:absolute;left:0;top:0;width:46px;height:46px;border-radius:var(--radius-md);
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.step:first-child .step-num{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand);}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0;}
.progress-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow);
}
.progress-panel h3{font-size:18px;margin-bottom:6px;}
.progress-panel > p{font-size:14px;color:var(--text-3);margin-bottom:24px;}
.progress-list{display:grid;gap:22px;}
.progress-head{display:flex;align-items:center;justify-content:space-between;font-size:14.5px;margin-bottom:9px;color:var(--text-2);}
.progress-head strong{color:var(--brand-deep);font-variant-numeric:tabular-nums;font-size:15px;}
.progress-track{height:10px;border-radius:999px;background:#e6ecf7;overflow:hidden;}
.progress-track i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,#4d92ff 100%);}
.progress-track i.is-teal{background:linear-gradient(90deg,var(--teal) 0%,#3ed2bb 100%);}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(26,108,240,.3);}
.news-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:11px;flex:1;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.news-title{font-size:17px;line-height:1.5;}
.news-title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a:hover{color:var(--brand);}
.news-excerpt{
  font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body .link-arrow{margin-top:auto;font-size:14px;}
.news-card--lead{grid-column:1 / -1;flex-direction:row;}
.news-card--lead .news-thumb{width:46%;flex:0 0 46%;aspect-ratio:auto;min-height:290px;}
.news-card--lead .news-body{width:54%;padding:38px 42px;gap:14px;justify-content:center;}
.news-card--lead .news-title{font-size:24px;line-height:1.45;}
.news-card--lead .news-title a{-webkit-line-clamp:3;}
.news-card--lead .news-excerpt{font-size:15.5px;-webkit-line-clamp:3;}
.news-empty{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius-lg);
  padding:64px 24px;text-align:center;box-shadow:var(--shadow);
}
.news-empty .empty-icon{
  width:56px;height:56px;border-radius:50%;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.news-empty .empty-icon svg{width:26px;height:26px;}
.news-empty strong{display:block;font-size:17px;color:var(--text);margin-bottom:6px;}
.news-empty span{font-size:14px;color:var(--text-3);}

/* ===== 数据与服务承诺 ===== */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(26,108,240,.3);}
.metric-value{
  font-size:30px;font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums;
  line-height:1.25;display:flex;align-items:baseline;gap:4px;
}
.metric-value small{font-size:14px;font-weight:600;color:var(--text-3);}
.metric-card h3{font-size:16px;margin:12px 0 8px;}
.metric-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0;}
.metric-bar{height:5px;border-radius:999px;background:#e6ecf7;margin-top:18px;overflow:hidden;}
.metric-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--teal) 0%,#3ed2bb 100%);}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto;}
.accordion{background:transparent;border:0;margin:0;}
.accordion .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.accordion .accordion-item:hover{border-color:rgba(26,108,240,.3);box-shadow:var(--shadow-hover);}
.accordion .accordion-title{
  display:block;position:relative;padding:20px 60px 20px 24px;
  font-size:16.5px;font-weight:600;color:var(--text);background:transparent;border:0;line-height:1.6;
  transition:color .2s var(--ease);
}
.accordion .accordion-title:hover{color:var(--brand);}
.accordion .accordion-title::before{display:none;}
.accordion .accordion-title::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand);line-height:1;
}
.accordion .accordion-item.is-active .accordion-title::after{content:"−";}
.accordion .accordion-content{padding:0 24px 22px;border:0;color:var(--text-2);font-size:15px;line-height:1.9;}
.accordion .accordion-content p{margin:0;}

/* ===== CTA ===== */
.cta-band{padding:0 0 96px;}
.cta-inner{
  background:linear-gradient(120deg,#eaf2ff 0%,#ffffff 58%,#fff3ea 100%);
  border:1px solid rgba(26,108,240,.16);border-radius:22px;
  padding:48px 54px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--shadow);
}
.cta-inner h2{font-size:26px;margin-bottom:10px;}
.cta-inner p{color:var(--text-2);font-size:15.5px;margin:0;}

/* ===== 页脚 ===== */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:330px;}
.footer-col h3{font-size:15px;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col span{font-size:14.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p,.footer-bottom span{font-size:13.5px;color:var(--text-3);margin:0;}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .container{padding:0 20px;}
  .section{padding:68px 0;}
  .section--tight{padding:56px 0;}
  .hero{padding:56px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:32px;}
  .hero-visual{max-width:620px;}
  .hero-badge{left:16px;bottom:16px;}
  .service-layout{grid-template-columns:1fr;}
  .service-card--main{grid-row:auto;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .flow-wrap{grid-template-columns:1fr;gap:40px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card--lead{flex-direction:column;}
  .news-card--lead .news-thumb{width:100%;flex:none;aspect-ratio:16/9;min-height:0;}
  .news-card--lead .news-body{width:100%;padding:28px;}
  .news-card--lead .news-title{font-size:21px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .cta-inner{padding:38px;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .main-nav{
    position:fixed;left:0;right:0;top:74px;z-index:180;
    background:#fff;border-bottom:1px solid var(--line);
    padding:14px 20px 24px;margin-left:0;
    box-shadow:0 20px 44px rgba(20,60,140,.14);
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:transform .22s var(--ease),opacity .22s var(--ease),visibility .22s var(--ease);
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:6px;}
  .main-nav a{width:100%;height:52px;border-radius:var(--radius-md);font-size:16px;padding:0 18px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .section--tight{padding:46px 0;}
  .hero{padding:44px 0 40px;}
  .hero h1{font-size:26px;line-height:1.38;}
  .hero-sub{font-size:15.5px;margin-bottom:26px;}
  .hero-actions{gap:14px;margin-bottom:32px;}
  .hero-actions .btn{width:100%;}
  .hero-actions .link-arrow{width:100%;justify-content:center;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px 0;}
  .hero-stats li{padding:0 14px;}
  .hero-stats li:nth-child(odd){padding-left:0;border-left:0;}
  .hero-stats li:nth-child(3){border-left:0;padding-left:0;}
  .hero-stats strong{font-size:22px;}
  .section-head h2{font-size:23px;}
  .section-head{margin-bottom:34px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:14px;}
  .service-card{padding:22px;}
  .service-card--main{padding:24px;}
  .service-card h3{font-size:19px;}
  .service-card--main h3{font-size:20px;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:26px;}
  .step{padding-left:60px;}
  .step-num{width:44px;height:44px;}
  .progress-panel{padding:24px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead .news-body{padding:22px;}
  .news-card--lead .news-title{font-size:19px;}
  .metric-grid{grid-template-columns:1fr;}
  .cta-band{padding:0 0 60px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding:30px 24px;border-radius:18px;}
  .cta-inner h2{font-size:22px;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .brand-text em{display:none;}
  .hero h1{font-size:24px;}
  .hero-stats strong{font-size:20px;}
  .accordion .accordion-title{font-size:15.5px;padding:18px 52px 18px 18px;}
  .accordion .accordion-content{padding:0 18px 20px;}
  .metric-value{font-size:26px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand:#1a6cf0;
  --brand-dark:#1457c8;
  --brand-darker:#0f4298;
  --brand-tint:#eaf1ff;
  --accent:#ff7a1a;
  --accent-tint:#fff2e6;
  --data:#10b981;
  --data-tint:#e6f8f2;
  --bg:#f4f7fb;
  --card:#ffffff;
  --text:#1b2431;
  --text-2:#55637a;
  --text-3:#8a97ab;
  --border:#e3e9f2;
  --border-strong:#cfd9e8;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 6px 20px rgba(26,108,240,.07);
  --shadow-hover:0 16px 34px rgba(26,108,240,.14);
  --ease:.22s cubic-bezier(.4,0,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;padding:0;}
table{border-collapse:collapse;border-spacing:0;}
time,.num{font-variant-numeric:tabular-nums;}
a:focus-visible,button:focus-visible,.btn:focus-visible{outline:3px solid rgba(26,108,240,.38);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(26,108,240,.10);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;transition:height var(--ease);
}
.site-header.is-scrolled .header-inner{height:68px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand:hover{color:inherit;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-darker));
  display:grid;place-items:center;
  box-shadow:0 6px 14px rgba(26,108,240,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.06em;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:block;padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.main-nav a:hover{color:var(--brand);background:var(--brand-tint);}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  border:1px solid var(--border);background:#fff;transition:background var(--ease);
}
.nav-toggle:hover{background:var(--brand-tint);}
.nav-toggle span{width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:all var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(26,108,240,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:0 10px 22px rgba(26,108,240,.30);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(26,108,240,.24);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand);color:#fff;transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-white{background:#fff;color:var(--brand-dark);box-shadow:0 6px 16px rgba(15,66,152,.14);}
.btn-white:hover{background:#f2f7ff;color:var(--brand-darker);transform:translateY(-1px);}
.btn:disabled,.btn[disabled]{opacity:.5;pointer-events:none;}
.text-link{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:600;color:var(--brand);}
.text-link .arrow{position:relative;width:16px;height:2px;border-radius:2px;background:currentColor;transition:width var(--ease);}
.text-link .arrow::after{content:"";position:absolute;right:0;top:-3.5px;width:7px;height:7px;border-top:2px solid currentColor;border-right:2px solid currentColor;transform:rotate(45deg);}
.text-link:hover .arrow{width:23px;}

/* ---------- Badge ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;background:var(--brand-tint);color:var(--brand-dark);letter-spacing:.02em;
}
.badge-accent{background:var(--accent-tint);color:#cf5c07;}
.badge-data{background:var(--data-tint);color:#0a7f5c;}

/* ---------- Article hero ---------- */
.article-hero{position:relative;padding:40px 0 42px;background:#fff;border-bottom:1px solid var(--border);overflow:hidden;}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.07;
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span{color:var(--border-strong);}
.breadcrumb em{font-style:normal;color:var(--text-2);}
.article-head{max-width:920px;}
.article-head h1{font-size:36px;line-height:1.3;margin:16px 0 18px;color:var(--text);}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13.5px;color:var(--text-3);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--border-strong);}

/* ---------- Article layout ---------- */
.article-main{padding:56px 0 48px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:48px;align-items:start;}
.article-content{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:40px 44px;box-shadow:var(--shadow);
  font-size:16.5px;line-height:1.85;color:var(--text-2);word-wrap:break-word;
}
.article-content p{margin:0 0 18px;}
.article-content h2{font-size:26px;color:var(--text);margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand);border-radius:2px;line-height:1.4;}
.article-content h3{font-size:20px;color:var(--text);margin:30px 0 14px;}
.article-content h4{font-size:17px;color:var(--text);margin:24px 0 12px;}
.article-content > :first-child{margin-top:0;}
.article-content strong,.article-content b{color:var(--text);font-weight:600;}
.article-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-content a:hover{color:var(--brand-dark);}
.article-content ul{margin:0 0 18px;}
.article-content ul li{position:relative;padding-left:22px;margin-bottom:9px;}
.article-content ul li::before{content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:2px;background:var(--brand);}
.article-content ol{margin:0 0 18px;counter-reset:ol-li;}
.article-content ol li{position:relative;padding-left:34px;margin-bottom:10px;counter-increment:ol-li;}
.article-content ol li::before{
  content:counter(ol-li);position:absolute;left:0;top:3px;width:23px;height:23px;border-radius:7px;
  background:var(--brand-tint);color:var(--brand-dark);font-size:12px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.article-content blockquote{
  margin:24px 0;padding:18px 22px;background:var(--brand-tint);
  border-left:4px solid var(--brand);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text-2);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--shadow);}
.article-content figure{margin:26px 0;}
.article-content figure img{margin:0 auto;}
.article-content figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px;}
.article-content table{width:100%;display:block;overflow-x:auto;border:1px solid var(--border);border-radius:var(--r-img);font-size:14.5px;margin:24px 0;}
.article-content th{background:#f7faff;color:var(--text);font-weight:600;text-align:left;}
.article-content th,.article-content td{padding:12px 16px;border-bottom:1px solid var(--border);white-space:nowrap;line-height:1.6;}
.article-content tbody tr:last-child td{border-bottom:0;}
.article-content code{
  background:#eef3fb;color:var(--brand-darker);padding:2px 7px;border-radius:6px;font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-content pre{
  background:#f1f5fb;border:1px solid var(--border);border-radius:var(--r-img);
  padding:18px 20px;overflow-x:auto;margin:22px 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;line-height:1.7;color:var(--text);
}
.article-content pre code{background:none;padding:0;color:inherit;}
.article-content hr{border:0;border-top:1px solid var(--border);margin:34px 0;}

.article-foot{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;}
.article-tags .badge{background:#f2f5fa;color:var(--text-2);}

/* ---------- Empty state ---------- */
.empty-state{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);text-align:center;padding:68px 28px;
}
.empty-icon{
  width:66px;height:66px;margin:0 auto 20px;border-radius:50%;
  background:var(--brand-tint);color:var(--brand);display:grid;place-items:center;
}
.empty-icon svg{width:28px;height:28px;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:24px;}

/* ---------- Sidebar ---------- */
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);
}
.side-card + .side-card{margin-top:20px;}
.side-card h3{font-size:17px;margin-bottom:14px;}
.side-card > p{font-size:14px;color:var(--text-2);line-height:1.8;}
.side-list li{border-bottom:1px dashed var(--border);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 0;font-size:14.5px;color:var(--text-2);
}
.side-list a::after{content:"›";font-size:17px;color:var(--text-3);transition:transform var(--ease),color var(--ease);}
.side-list a:hover{color:var(--brand);}
.side-list a:hover::after{color:var(--brand);transform:translateX(3px);}
.side-facts{display:flex;flex-direction:column;gap:14px;margin-top:4px;}
.side-fact{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--border);}
.side-fact:last-child{border-bottom:0;padding-bottom:0;}
.side-fact span{font-size:13.5px;color:var(--text-3);}
.side-fact strong{font-size:19px;color:var(--brand);font-variant-numeric:tabular-nums;}
.side-card-cta{background:linear-gradient(140deg,var(--brand),var(--brand-darker));border-color:transparent;}
.side-card-cta h3{color:#fff;}
.side-card-cta p{color:rgba(255,255,255,.86);font-size:14px;line-height:1.75;margin-bottom:18px;}
.side-card-cta .btn{width:100%;}

/* ---------- Related ---------- */
.related-section{padding:70px 0 8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px;}
.section-title{font-size:27px;}
.section-sub{font-size:14.5px;color:var(--text-3);margin-top:8px;}
.related-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#c9dbff;}
.related-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#eef3fb;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .38s ease;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .card-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 22px;flex:1;}
.related-card h3{font-size:17px;line-height:1.5;}
.related-card h3 a{color:var(--text);}
.related-card h3 a:hover{color:var(--brand);}
.related-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-top:auto;padding-top:6px;}

/* ---------- CTA band ---------- */
.cta-band{padding:72px 0 92px;}
.cta-inner{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#e7efff,#f4f8ff);
  border:1px solid #d5e3ff;border-radius:20px;padding:42px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
}
.cta-inner::after{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:rgba(26,108,240,.09);
}
.cta-copy{position:relative;z-index:1;max-width:640px;}
.cta-copy h2{font-size:26px;margin-bottom:10px;}
.cta-copy p{font-size:15px;color:var(--text-2);line-height:1.8;}
.cta-inner .btn{position:relative;z-index:1;flex-shrink:0;}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.85;max-width:350px;}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col li + li{margin-top:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom p{margin:0;}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-content{padding:32px 28px;font-size:16px;}
  .article-head h1{font-size:29px;}
  .article-content h2{font-size:22px;}
  .article-content h3{font-size:18.5px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:34px 30px;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .header-actions .btn{display:none;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--border);box-shadow:0 18px 32px rgba(26,108,240,.13);
    padding:12px 24px 20px;display:none;
  }
  .main-nav.is-open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
  .main-nav a{padding:14px 12px;font-size:16px;}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:var(--brand-tint);}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .header-inner{height:66px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:16px;}
  .article-hero{padding:28px 0 30px;}
  .article-head h1{font-size:25px;margin:14px 0 16px;}
  .article-main{padding:36px 0 24px;}
  .article-content{padding:26px 20px;font-size:16px;line-height:1.85;}
  .article-content h2{font-size:20px;margin-top:30px;}
  .article-content h3{font-size:17.5px;}
  .related-section{padding:52px 0 8px;}
  .section-title{font-size:22px;}
  .cta-band{padding:52px 0 64px;}
  .cta-copy h2{font-size:21px;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .side-card{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;}
}

/* roulang page: category1 */
:root{
  --brand:#1f6feb;
  --brand-dark:#1758c4;
  --brand-deep:#12439a;
  --brand-light:#e9f1ff;
  --brand-soft:#f5f9ff;
  --accent:#ff7a18;
  --accent-light:#fff1e6;
  --cyan:#12b3a4;
  --cyan-light:#e6f8f6;
  --bg:#f3f7fc;
  --surface:#ffffff;
  --text:#16202c;
  --text-2:#55647a;
  --text-3:#8a99ad;
  --border:#e3e9f2;
  --border-strong:#cddcf0;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-sm:0 4px 16px rgba(31,111,235,.07);
  --shadow-md:0 12px 30px rgba(31,111,235,.13);
  --shadow-lg:0 20px 44px rgba(31,111,235,.16);
  --container:1200px;
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-dark);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
strong{font-weight:700;}
:focus-visible{outline:3px solid rgba(31,111,235,.4);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:28px;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-light);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:16px;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);transform:skewX(-12deg);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(31,111,235,.1);}
.header-inner{display:flex;align-items:center;gap:18px;min-height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand) 0%,#4b93ff 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(31,111,235,.28);
}
.brand-mark svg{width:23px;height:23px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);letter-spacing:.03em;}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:4px;margin:0;padding:0;}
.main-nav a{
  display:block;padding:10px 16px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--text-2);position:relative;
}
.main-nav a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand);background:var(--brand-soft);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .22s ease,opacity .22s ease;}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft);}

/* 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;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(31,111,235,.26);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:0 12px 26px rgba(31,111,235,.32);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(31,111,235,.26);}
.btn-ghost{background:#fff;border-color:var(--border-strong);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:var(--r-btn);}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.link-more::after{
  content:"";width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(-45deg) translateY(-1px);transition:transform .2s ease;
}
.link-more:hover::after{transform:rotate(-45deg) translate(3px,2px);}

/* 页头 */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:76px 0 68px;
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(255,255,255,.97) 0%,rgba(233,241,255,.94) 52%,rgba(245,249,255,.9) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:#b9c5d6;}
.breadcrumb .current{color:var(--text-2);font-weight:600;}
.page-hero h1{
  font-size:clamp(26px,3.6vw,40px);
  max-width:720px;margin-bottom:16px;
}
.hero-lead{max-width:660px;font-size:17px;color:var(--text-2);margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.stats-row{margin:0;}
.stat-item{
  border-left:1px solid var(--border-strong);
  padding:2px 0 2px 18px;
}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;letter-spacing:-.02em;}
.stat-label{font-size:13px;color:var(--text-3);}

/* 交错内容行 */
.channel-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;align-items:center;padding:32px 0;
  border-bottom:1px solid var(--border);
}
.channel-row:last-child{border-bottom:0;padding-bottom:0;}
.channel-row.reverse .row-media{order:2;}
.row-media{
  border-radius:var(--r-card);overflow:hidden;position:relative;
  box-shadow:var(--shadow-sm);border:1px solid var(--border);
}
.row-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.row-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(31,111,235,.06),rgba(18,179,164,.06));
  pointer-events:none;
}
.channel-row .row-body{max-width:520px;}
.row-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:26px;border-radius:8px;
  background:var(--brand-light);color:var(--brand);
  font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;
}
.row-body h3{font-size:20px;margin-bottom:12px;}
.row-body p{color:var(--text-2);font-size:15.5px;margin-bottom:16px;}
.channel-row.is-featured{
  background:#fff;border:1px solid #bcd7ff;border-radius:16px;
  padding:32px;box-shadow:var(--shadow-md);margin-bottom:8px;
}
.channel-row.is-featured .row-index{background:var(--accent-light);color:#c85a05;}

/* 中部 CTA 条 */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(120deg,#eaf2ff 0%,#f7fbff 100%);
  border:1px solid #d3e3fb;border-radius:var(--r-card);
  padding:28px 32px;margin-top:48px;
}
.cta-bar h3{font-size:19px;margin-bottom:6px;}
.cta-bar p{color:var(--text-2);font-size:15px;margin:0;}
.cta-bar .btn{flex-shrink:0;}

/* 数据分布 */
.stat-list{display:flex;flex-direction:column;gap:26px;max-width:820px;}
.stat-line{display:flex;flex-direction:column;gap:10px;}
.stat-line-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;}
.stat-line-head strong{font-size:15.5px;font-weight:600;}
.stat-line-head em{font-style:normal;font-size:15px;font-weight:700;color:var(--brand);}
.bar{height:10px;border-radius:var(--r-pill);background:#e6edf8;overflow:hidden;}
.bar span{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--brand),#4b93ff);}
.bar.is-cyan span{background:linear-gradient(90deg,var(--cyan),#43cfc1);}
.bar.is-accent span{background:linear-gradient(90deg,var(--accent),#ffa25c);}
.stat-note{font-size:13px;color:var(--text-3);margin-top:22px;}

/* 信息条 */
.info-list{display:flex;flex-direction:column;gap:16px;max-width:960px;}
.info-strip{
  display:flex;gap:20px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px 26px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.info-strip:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c9dcf8;}
.info-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-light);color:var(--brand);
}
.info-icon svg{width:22px;height:22px;}
.info-strip h3{font-size:17px;margin-bottom:6px;}
.info-strip p{color:var(--text-2);font-size:15px;margin:0;}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto;}
.accordion{background:transparent;border:0;border-radius:0;margin:0;}
.accordion-item{
  border:1px solid var(--border);border-radius:var(--r-card);
  background:#fff;margin-bottom:12px;overflow:hidden;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.accordion-item:hover{border-color:#c9dcf8;box-shadow:var(--shadow-sm);}
.accordion-title{
  position:relative;display:block;padding:18px 58px 18px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  border:0;background:#fff;line-height:1.6;
}
.accordion-title:hover{background:var(--brand-soft);color:var(--brand);}
.accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;line-height:1;font-weight:400;color:var(--brand);
}
.accordion-item.is-active>.accordion-title::before{content:"–";}
.accordion-item.is-active{border-color:#c9dcf8;box-shadow:var(--shadow-sm);}
.accordion-content{
  display:none;padding:0 22px 20px;border:0;
  color:var(--text-2);font-size:15px;line-height:1.85;background:#fff;
}
.accordion-item.is-active>.accordion-content{display:block;}

/* 结尾 CTA */
.cta-final{
  background:linear-gradient(120deg,var(--brand) 0%,#2f7ff0 55%,#3f8df5 100%);
  border-radius:18px;padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-lg);
}
.cta-final h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-final p{color:rgba(255,255,255,.85);margin:0;font-size:15.5px;}
.cta-final .btn{background:#fff;color:var(--brand-deep);box-shadow:0 10px 24px rgba(10,40,90,.22);flex-shrink:0;}
.cta-final .btn:hover{background:#f2f7ff;color:var(--brand-deep);}

/* 页脚 */
.site-footer{background:#0f1c30;color:#c3cfdf;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand .brand-text strong{color:#fff;}
.footer-brand .brand-text em{color:#8ba0bb;}
.footer-brand p{font-size:14px;color:#9aabc2;line-height:1.8;margin:0;}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#a8b8cd;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col span{font-size:14px;color:#a8b8cd;}
.footer-bottom{
  margin-top:44px;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;
}
.footer-bottom p{margin:0;font-size:13.5px;color:#8ba0bb;}
.footer-bottom span{font-size:13px;color:#7286a1;}

/* 滚动进入动效 */
.reveal-up{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease;}
.reveal-up.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1023px){
  :root{--space-section:72px;}
  .container{padding:0 20px;}
  .main-nav{
    position:fixed;left:0;right:0;top:74px;bottom:0;
    background:#fff;padding:20px;margin:0;
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    box-shadow:0 18px 40px rgba(15,28,48,.14);
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:6px;}
  .main-nav a{padding:16px 18px;font-size:17px;border-radius:12px;color:var(--text);}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:var(--brand-light);}
  .nav-toggle{display:flex;}
  .channel-row{grid-template-columns:1fr;gap:24px;padding:26px 0;}
  .channel-row.reverse .row-media{order:0;}
  .channel-row .row-body{max-width:none;}
  .channel-row.is-featured{padding:24px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px;}
  .cta-final{flex-direction:column;align-items:flex-start;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--space-section:52px;}
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .header-inner{min-height:66px;gap:12px;}
  .header-actions .btn-sm{display:none;}
  .main-nav{top:66px;}
  .brand-text em{display:none;}
  .page-hero{padding:48px 0 44px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .stat-item{border-left:0;padding-left:0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:23px;}
  .channel-row.is-featured{padding:18px;}
  .row-body h3{font-size:18px;}
  .cta-bar{padding:20px;gap:18px;}
  .cta-bar .btn{width:100%;}
  .info-strip{flex-direction:column;gap:14px;padding:20px;}
  .cta-final{padding:28px 22px;border-radius:16px;}
  .cta-final h2{font-size:21px;}
  .cta-final .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .accordion-title{padding:16px 52px 16px 18px;font-size:15.5px;}
  .accordion-content{padding:0 18px 18px;}
}
@media (max-width:519px){
  .stat-num{font-size:22px;}
  .breadcrumb{font-size:12.5px;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --brand:#1f6fe5;
  --brand-700:#1557b0;
  --brand-300:#7dabf3;
  --brand-050:#e9f1fe;
  --brand-025:#f4f8ff;
  --accent:#ff7a2f;
  --accent-050:#fff1e8;
  --teal:#12b3a0;
  --teal-050:#e6f8f5;

  --bg:#f2f6fc;
  --card:#ffffff;

  --t1:#152029;
  --t2:#5b6b80;
  --t3:#8b9aae;

  --line:#e2e8f2;
  --line-strong:#d3ddec;

  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;

  --shadow-sm:0 2px 10px rgba(31,111,229,.06);
  --shadow:0 12px 32px rgba(31,111,229,.10);
  --shadow-hover:0 18px 44px rgba(31,111,229,.17);

  --sec-pc:96px;
  --sec-tb:68px;
  --sec-mb:52px;

  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-700);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,111,229,.45);outline-offset:2px;border-radius:6px;}

/* Foundation 覆盖 */
.button,.button.primary,.button.secondary{
  background:var(--brand);color:#fff;border-radius:var(--radius-btn);
  box-shadow:none;border:none;
}
.accordion{border:none;background:transparent;}
.accordion-title{border:none;}

/* ============ 容器与通用排版 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:var(--sec-pc) 0;}
.section-sm{padding:calc(var(--sec-pc) * .62) 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-050);
  padding:5px 14px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.section-eyebrow::before{
  content:"";width:14px;height:2px;border-radius:2px;background:var(--accent);
}
h1{font-size:38px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h2{font-size:27px;line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
.lead{font-size:17px;color:var(--t2);line-height:1.85;}
.muted{color:var(--t3);font-size:14px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,111,229,.22);}
.btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:0 10px 22px rgba(31,111,229,.28);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-300);}
.btn-ghost:hover{background:var(--brand-025);border-color:var(--brand);color:var(--brand-700);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#e96a20;color:#fff;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.btn-text::after{
  content:"";width:7px;height:7px;border-right:2px solid currentColor;border-top:2px solid currentColor;
  transform:rotate(45deg);transition:transform .2s ease;
}
.btn-text:hover::after{transform:rotate(45deg) translate(2px,-2px);}

/* ============ 徽章与胶囊 ============ */
.badge{
  display:inline-flex;align-items:center;height:23px;padding:0 10px;
  font-size:12px;font-weight:600;border-radius:var(--radius-pill);
  background:var(--brand-050);color:var(--brand-700);
}
.badge-accent{background:var(--accent-050);color:#c85415;}
.badge-teal{background:var(--teal-050);color:#0b8478;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(21,32,41,.07);}
.header-inner{
  display:flex;align-items:center;gap:24px;height:74px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand) 0%,#3f8bf0 60%,var(--accent) 160%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(31,111,229,.28);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.01em;}
.brand-text em{font-size:12px;font-style:normal;color:var(--t3);letter-spacing:.04em;}

.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--t2);border-radius:var(--radius-pill);
  position:relative;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--brand);background:var(--brand-025);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);font-weight:600;background:var(--brand-050);}
.main-nav a.is-active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:#fff;border:1px solid var(--line-strong);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 页头（窄幅） ============ */
.page-hero{
  position:relative;
  padding:64px 0 56px;
  background-image:linear-gradient(180deg,rgba(255,255,255,.90) 0%,rgba(242,246,252,.96) 78%),
                   url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;}
.crumbs a{color:var(--t2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{color:var(--t2);font-weight:600;}
.page-hero h1{max-width:820px;margin-bottom:16px;}
.page-hero .lead{max-width:720px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:34px;
  border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(255,255,255,.82);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.hero-stats .stat{flex:1 1 180px;padding:18px 24px;border-right:1px solid var(--line);}
.hero-stats .stat:last-child{border-right:none;}
.hero-stats .num{display:block;font-size:24px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.3;}
.hero-stats .label{font-size:13px;color:var(--t3);}

/* ============ 筛选胶囊 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:20px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
}
.filter-bar .filter-label{font-size:13px;font-weight:600;color:var(--t3);margin-right:4px;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;
  font-size:14px;font-weight:500;color:var(--t2);
  background:#fff;border:1px solid var(--line-strong);border-radius:var(--radius-pill);
  cursor:pointer;transition:all .2s ease;
}
.chip:hover{border-color:var(--brand-300);color:var(--brand);background:var(--brand-025);}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 14px rgba(31,111,229,.22);}

/* ============ 条目卡片网格 ============ */
.entry-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;margin-top:28px;
}
.entry-card{
  position:relative;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--brand-300);}
.entry-top{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.item-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;
  border:1px solid #d7e5fd;
}
.entry-card h3{font-size:19px;margin:0;}
.entry-card .desc{font-size:14.5px;color:var(--t2);line-height:1.8;margin-bottom:16px;}
.points{border-top:1px dashed var(--line-strong);padding-top:14px;margin-bottom:18px;display:grid;gap:8px;}
.points li{position:relative;padding-left:18px;font-size:14px;color:var(--t2);line-height:1.7;}
.points li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--teal);
}
.entry-card .btn-text{margin-top:auto;}
.entry-card.is-feature{border-color:var(--brand-300);box-shadow:var(--shadow);}
.entry-card.is-feature::after{
  content:"";position:absolute;left:0;top:22px;width:4px;height:34px;
  border-radius:0 4px 4px 0;background:var(--accent);
}

/* ============ 横向 CTA 条 ============ */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 32px;border-radius:var(--radius-card);
  background:linear-gradient(120deg,var(--brand) 0%,#3d86ee 62%,#5aa0f6 100%);
  color:#fff;box-shadow:0 16px 36px rgba(31,111,229,.24);
}
.cta-strip h3{color:#fff;font-size:20px;margin-bottom:6px;}
.cta-strip p{color:rgba(255,255,255,.86);font-size:14.5px;}
.cta-strip .btn-accent{flex:0 0 auto;}

/* ============ 图文要点区 ============ */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
.split .figure{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);}
.split .figure img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:4/3;}
.check-list{display:grid;gap:16px;margin-top:26px;}
.check-list li{
  display:flex;gap:14px;padding:16px 18px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,transform .2s ease;
}
.check-list li:hover{border-color:var(--brand-300);transform:translateX(3px);}
.check-list i{color:var(--teal);font-size:17px;margin-top:4px;}
.check-list strong{display:block;font-size:15.5px;margin-bottom:2px;}
.check-list span{font-size:14px;color:var(--t2);line-height:1.7;}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-accordion{display:grid;gap:12px;}
.faq-accordion .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-accordion .accordion-item:hover{border-color:var(--brand-300);}
.faq-accordion .accordion-item.is-open{border-color:var(--brand-300);box-shadow:var(--shadow);}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:20px 24px;background:transparent;border:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--t1);text-align:left;line-height:1.6;
}
.faq-accordion .accordion-title:hover{color:var(--brand);}
.acc-icon{position:relative;flex:0 0 auto;width:18px;height:18px;}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.acc-icon::before{width:14px;height:2px;}
.acc-icon::after{width:2px;height:14px;transition:transform .2s ease,opacity .2s ease;}
.faq-accordion .accordion-item.is-open .acc-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-accordion .accordion-content{
  display:none;padding:0 24px 22px;border-top:1px solid var(--line);
}
.faq-accordion .accordion-item.is-open .accordion-content{display:block;}
.faq-accordion .accordion-content p{padding-top:18px;font-size:15px;color:var(--t2);line-height:1.85;}

/* ============ 结尾 CTA ============ */
.final-cta{
  background:var(--brand-050);border:1px solid #d7e5fd;border-radius:var(--radius-card);
  padding:44px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-sm);
}
.final-cta h2{font-size:24px;margin-bottom:8px;}
.final-cta p{color:var(--t2);font-size:15px;max-width:640px;}
.final-cta .cta-actions{display:flex;gap:12px;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;margin-top:calc(var(--sec-pc) * .6);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--t2);line-height:1.8;max-width:340px;}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--t1);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--t2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
}
.footer-bottom p,.footer-bottom span{font-size:13px;color:var(--t3);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:var(--sec-tb) 0;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .entry-grid{grid-template-columns:1fr;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 34px rgba(21,32,41,.10);
    padding:12px 20px 20px;
    display:none;
  }
  .main-nav.is-open{display:block;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .main-nav a{height:52px;justify-content:flex-start;padding:0 16px;font-size:16px;border-radius:var(--radius-btn);}
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:var(--brand-050);}
  .header-actions .btn-sm{height:40px;}
  .cta-strip{flex-direction:column;align-items:flex-start;}
  .cta-strip .btn-accent{width:100%;}
  .final-cta{flex-direction:column;align-items:flex-start;padding:32px;}
  .final-cta .cta-actions{width:100%;flex-direction:column;}
  .final-cta .cta-actions .btn{width:100%;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .section{padding:var(--sec-mb) 0;}
  .section-head{margin-bottom:28px;}
  h1{font-size:26px;}
  h2{font-size:21px;}
  h3{font-size:18px;}
  .page-hero{padding:44px 0 40px;}
  .hero-stats .stat{padding:14px 18px;flex:1 1 100%;border-right:none;border-bottom:1px solid var(--line);}
  .hero-stats .stat:last-child{border-bottom:none;}
  .entry-card{padding:22px;}
  .filter-bar{padding:16px;}
  .chip{height:32px;padding:0 13px;font-size:13px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .brand-text strong{font-size:16px;}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .header-actions .btn-sm{display:none;}
  .cta-strip{padding:22px;}
  .faq-accordion .accordion-title{padding:16px 18px;font-size:15px;}
  .faq-accordion .accordion-content{padding:0 18px 18px;}
}