/* roulang page: index */
:root{
  --brand:#1F5FA9;
  --brand-dark:#184A85;
  --brand-soft:rgba(31,95,169,.08);
  --ink:#0F2540;
  --accent:#F2703A;
  --accent-dark:#DB5C28;
  --green:#1AA085;
  --green-soft:rgba(26,160,133,.10);
  --bg:#F6F7FA;
  --card:#FFFFFF;
  --line:#E4E8F0;
  --muted:#5A6B80;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(15,37,64,.06), 0 8px 24px rgba(15,37,64,.06);
  --sh-2:0 12px 32px rgba(15,37,64,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Inter,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-dark);}
p{margin:0 0 18px;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.2px;color:var(--ink);font-family:inherit;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-y) 0;}
.section--tight{padding:64px 0;}
.section--plain{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:6px;padding:4px 10px;margin-bottom:14px;letter-spacing:.6px;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);position:relative;padding-left:16px;margin-bottom:14px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand);
}
.section-head p{color:var(--muted);font-size:16px;margin:0;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head--center h2{padding-left:0;}
.section-head--center h2::before{display:none;}

/* ===== Header / 悬浮胶囊导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;padding:16px 0 8px;
  transition:padding .22s var(--ease);
}
.site-header.is-scrolled{padding:8px 0 6px;}
.nav-shell{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.nav-inner{
  display:flex;align-items:center;gap:18px;
  height:64px;padding:0 10px 0 18px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:56px;box-shadow:0 10px 28px rgba(15,37,64,.12);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand:hover{color:var(--brand);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.4px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 12px;
  font-size:15px;color:#31465f;border-radius:8px;white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;margin-left:auto;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:rgba(15,37,64,.45);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:#fff;
  display:flex;flex-direction:column;padding:22px;transform:translateX(100%);
  transition:transform .24s var(--ease);box-shadow:-12px 0 40px rgba(15,37,64,.18);
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;font-size:18px;color:var(--ink);line-height:1;}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.drawer-nav a{
  display:flex;align-items:center;height:52px;color:var(--ink);font-size:16px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:18px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-align:center;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{background:var(--accent);color:#fff;border-radius:var(--r-pill);box-shadow:0 6px 16px rgba(242,112,58,.26);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(242,112,58,.30);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(242,112,58,.24);}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line);border-radius:var(--r-pill);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px);box-shadow:var(--sh-1);}
.btn-outline{background:var(--brand-soft);color:var(--brand);border-color:rgba(31,95,169,.24);}
.btn-outline:hover{background:rgba(31,95,169,.14);color:var(--brand-dark);}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);font-size:14.5px;}
.link-arrow::after{content:"→";transition:transform .2s var(--ease);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ===== Hero ===== */
.hero{padding:32px 0 8px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(31,95,169,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(31,95,169,.06) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(circle at 70% 20%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 70% 20%,#000,transparent 72%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:48px 0 40px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--green);display:inline-block;}
.hero h1{font-size:clamp(28px,4.4vw,44px);line-height:1.28;margin-bottom:18px;letter-spacing:.4px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:26px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:13.5px;color:#3b4f68;box-shadow:0 1px 2px rgba(15,37,64,.04);
}
.chip svg{width:16px;height:16px;stroke:var(--brand);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:16px;overflow:hidden;aspect-ratio:16/10;
  border:1px solid var(--line);box-shadow:var(--sh-1);background:var(--brand-soft);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:-14px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--sh-2);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.hero-float b{font-size:22px;color:var(--accent);font-weight:700;line-height:1;}
.hero-float span{font-size:13px;color:var(--muted);display:block;margin-top:4px;}
.kpi-band{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;margin-bottom:8px;
}
.kpi-item{padding:24px 26px;border-right:1px solid var(--line);}
.kpi-item:last-child{border-right:0;}
.kpi-item b{display:block;font-size:26px;color:var(--ink);font-weight:700;letter-spacing:.5px;}
.kpi-item b i{font-style:normal;color:var(--accent);}
.kpi-item span{display:block;font-size:13.5px;color:var(--muted);margin-top:6px;}

/* ===== 三步上手 ===== */
.steps-track{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.steps-track::before{
  content:"";position:absolute;top:34px;left:8%;right:8%;border-top:1px dashed #c8d3e2;z-index:0;
}
.step{position:relative;z-index:1;padding-top:0;}
.step-num{
  font-size:52px;font-weight:700;color:rgba(31,95,169,.13);line-height:1;letter-spacing:2px;margin-bottom:6px;
}
.step-dot{
  width:12px;height:12px;border-radius:50%;background:var(--brand);border:3px solid #fff;
  box-shadow:0 0 0 1px rgba(31,95,169,.35);margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:15px;color:var(--muted);margin:0;}

/* ===== 分类入口 ===== */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.entry-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#cfdaea;}
.entry-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.entry-card:hover .entry-thumb img{transform:scale(1.02);}
.entry-body{padding:22px 22px 24px;}
.entry-body h3{font-size:18px;margin-bottom:10px;}
.entry-body p{font-size:14.5px;color:var(--muted);margin:0 0 16px;}

/* ===== 案例证明 ===== */
.case-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch;}
.case-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-2);display:flex;flex-direction:column;
}
.case-main .case-media{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.case-main .case-media img{width:100%;height:100%;object-fit:cover;}
.case-main .case-body{padding:26px 26px 28px;}
.case-main h3{font-size:20px;margin:12px 0 12px;}
.case-main p{color:var(--muted);font-size:15px;margin:0;}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.case-mini{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.case-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.case-mini .case-media{aspect-ratio:16/7;overflow:hidden;background:var(--brand-soft);}
.case-mini .case-media img{width:100%;height:100%;object-fit:cover;}
.case-mini .case-body{padding:18px 22px 20px;}
.case-mini h3{font-size:16.5px;margin:10px 0 10px;}
.metric{display:flex;align-items:baseline;gap:8px;margin-top:12px;}
.metric b{font-size:26px;color:var(--accent);font-weight:700;line-height:1;}
.metric span{font-size:13px;color:var(--muted);}
.badge{
  display:inline-block;font-size:12px;padding:4px 10px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);font-weight:600;letter-spacing:.3px;
}
.badge--green{background:var(--green-soft);color:var(--green);}

/* ===== 资讯列表 CMS ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#cfdaea;}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft);display:block;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.02);}
.news-body{padding:20px 22px 16px;flex:1 1 auto;}
.news-body h3{font-size:17px;line-height:1.5;margin:10px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-body h3 a{color:var(--brand);}
.news-excerpt{
  font-size:14.5px;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 22px;border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);
}
.empty-state{
  border:1px dashed #c8d3e2;border-radius:var(--r-card);background:#fff;
  padding:44px 28px;text-align:center;color:var(--muted);
}
.empty-state p{margin:0 0 16px;font-size:15px;}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:.85fr 1.4fr;gap:48px;align-items:start;}
.faq-aside h2{font-size:clamp(24px,3vw,30px);margin-bottom:16px;}
.faq-aside p{color:var(--muted);font-size:15px;margin-bottom:20px;}
.faq-aside .mini-note{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;font-size:14px;color:var(--muted);box-shadow:var(--sh-1);
}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:12px 24px;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--ink);
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:10px;height:10px;flex:0 0 auto;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform .22s var(--ease);margin-top:-4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px;}
.faq-item[open] summary{color:var(--brand);}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--muted);}
.faq-body p{margin:0;}

/* ===== CTA 表单 ===== */
.cta-band{
  background:#fff;border:1px solid rgba(31,95,169,.22);border-radius:18px;
  padding:44px;box-shadow:var(--sh-1);
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
}
.cta-band h2{font-size:clamp(23px,2.8vw,30px);margin-bottom:16px;}
.cta-band p{color:var(--muted);font-size:15.5px;margin-bottom:20px;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#31465f;margin-bottom:12px;
}
.cta-points svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px;stroke:var(--green);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:#31465f;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;color:var(--ink);font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,95,169,.12);
}
.form-note{font-size:13px;color:var(--muted);margin:14px 0 0;}
.form-msg{display:none;font-size:14px;margin-top:14px;padding:10px 14px;border-radius:10px;}
.form-msg.is-error{display:block;color:#B4432A;border:1px solid #f0c8ba;background:#fff6f2;}
.form-msg.is-ok{display:block;color:#0F6E5C;border:1px solid #b9e3d8;background:#f2fbf8;}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:#c7d2e0;margin-top:96px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff;}
.footer-brand .brand-mark{background:var(--brand);}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.site-footer p{font-size:14px;color:#9fb0c6;line-height:1.8;margin:0;}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.4px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#9fb0c6;font-size:14px;border-bottom:2px solid transparent;padding-bottom:1px;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--brand);}
.footer-contact li{font-size:14px;color:#9fb0c6;margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;text-align:center;
  font-size:13px;color:#8698af;
}
.footer-bottom a{color:#8698af;}
.footer-bottom a:hover{color:#fff;}

/* ===== 响应式 ===== */
@media screen and (max-width:1100px){
  .nav-link{padding:0 9px;font-size:14.5px;}
  .hero-grid{gap:36px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px;}
}
@media screen and (max-width:1024px){
  :root{--sec-y:80px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:58px;padding-right:8px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{order:-1;}
  .hero-float{left:14px;bottom:14px;}
  .kpi-band{grid-template-columns:1fr 1fr;}
  .kpi-item:nth-child(2){border-right:0;}
  .kpi-item:nth-child(1),.kpi-item:nth-child(2){border-bottom:1px solid var(--line);}
  .news-grid{grid-template-columns:1fr 1fr;}
  .case-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:32px;}
}
@media screen and (max-width:768px){
  :root{--sec-y:60px;}
  body{font-size:16px;}
  .container,.nav-shell{padding:0 18px;}
  .steps-track{grid-template-columns:1fr;gap:26px;}
  .steps-track::before{display:none;}
  .step{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start;}
  .step-num{font-size:38px;margin:0;}
  .step-dot{display:none;}
  .entry-grid{grid-template-columns:1fr;}
  .case-side{grid-template-rows:auto;}
  .hero-actions .btn{width:100%;}
  .kpi-item{padding:20px;}
  .cta-band{padding:24px;}
  .section-head{margin-bottom:28px;}
}
@media screen and (max-width:520px){
  .news-grid{grid-template-columns:1fr;}
  .kpi-band{grid-template-columns:1fr;}
  .kpi-item{border-right:0;border-bottom:1px solid var(--line);}
  .kpi-item:last-child{border-bottom:0;}
  .brand-text{font-size:15.5px;}
  .hero{padding-top:12px;}
  .hero-float{padding:10px 14px;}
  .hero-float b{font-size:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{padding:12px 18px;font-size:15.5px;}
  .faq-body{padding:0 18px 20px;}
}

/* roulang page: article */
:root{
  --blue:#1F5FA9;
  --blue-soft:rgba(31,95,169,.08);
  --blue-line:rgba(31,95,169,.18);
  --ink:#0F2540;
  --orange:#F2703A;
  --green:#1AA085;
  --bg:#F6F7FA;
  --card:#FFFFFF;
  --line:#E4E8F0;
  --muted:#5A6B80;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,37,64,.06),0 8px 24px rgba(15,37,64,.06);
  --sh-2:0 12px 32px rgba(15,37,64,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Inter,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border:0;}
a{color:var(--blue);text-decoration:none;transition:color var(--t) var(--ease),border-color var(--t) var(--ease);}
a:hover{color:var(--orange);}
h1,h2,h3,h4{margin:0;line-height:1.4;font-weight:600;color:var(--ink);letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0 0;}
.nav-shell{
  display:flex;align-items:center;gap:20px;
  height:64px;padding:0 14px 0 20px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  transition:height var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.nav-shell.is-scrolled{height:56px;box-shadow:var(--sh-2);background:rgba(255,255,255,.97);}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:.2px;}
.brand:hover{color:var(--blue);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#2A72BE,#1F5FA9);
  box-shadow:0 6px 14px rgba(31,95,169,.22);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;
  padding:0 12px;font-size:15px;font-weight:500;color:var(--muted);white-space:nowrap;
  transition:color var(--t) var(--ease),height var(--t) var(--ease);
}
.nav-shell.is-scrolled .nav-link{height:56px;}
.nav-link:hover{color:var(--blue);}
.nav-link.is-active{color:var(--blue);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:16px;height:2px;border-radius:2px;background:var(--blue);
}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮与徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 20px rgba(242,112,58,.24);}
.btn-primary:hover{background:#E4632F;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:#D55A28;}
.btn-outline{background:#fff;color:var(--blue);border-color:var(--blue-line);}
.btn-outline:hover{color:var(--blue);border-color:var(--blue);background:var(--blue-soft);transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--blue);border-bottom:2px solid var(--blue-line);padding-bottom:2px;}
.link-arrow:hover{border-bottom-color:var(--orange);color:var(--orange);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;background:var(--blue-soft);color:var(--blue);
}
.badge-green{background:rgba(26,160,133,.10);color:var(--green);}
.badge-orange{background:rgba(242,112,58,.12);color:#D55A28;}

/* ---------- 移动端抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:rgba(15,37,64,.42);
  opacity:0;pointer-events:none;transition:opacity var(--t) var(--ease);
}
.mobile-drawer.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer-inner{
  position:absolute;top:0;right:0;width:min(86vw,340px);height:100%;
  background:#fff;padding:22px 20px 96px;overflow-y:auto;
  transform:translateX(100%);transition:transform 220ms var(--ease);
  display:flex;flex-direction:column;gap:6px;
}
.mobile-drawer.is-open .mobile-drawer-inner{transform:translateX(0);}
.mobile-drawer .drawer-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:1px;margin:6px 0 10px;}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;min-height:52px;padding:0 14px;border-radius:12px;
  color:var(--ink);font-weight:500;border:1px solid transparent;
}
.mobile-drawer a.drawer-link:hover{background:var(--blue-soft);color:var(--blue);}
.mobile-drawer a.drawer-link.is-active{color:var(--blue);font-weight:600;background:var(--blue-soft);border-color:var(--blue-line);}
.drawer-footer{position:absolute;left:20px;right:20px;bottom:20px;}
.drawer-close{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:18px;color:var(--muted);}

/* ---------- 面包屑 ---------- */
main{padding-bottom:96px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:28px 2px 20px;font-size:13.5px;color:var(--muted);
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{color:#B9C3D2;}

/* ---------- 文章头 ---------- */
.article-hero{
  background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:36px 40px 32px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,95,169,.10),rgba(31,95,169,0) 70%);
}
.article-hero .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--blue);
  letter-spacing:.6px;margin-bottom:14px;
}
.article-hero .kicker i{display:block;width:20px;height:3px;border-radius:2px;background:var(--blue);}
.article-hero h1{
  font-size:clamp(26px,3.4vw,38px);line-height:1.42;font-weight:700;
  max-width:900px;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta svg{width:17px;height:17px;stroke:var(--muted);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 阅读区 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:32px;align-items:start;margin-top:28px;
}
.article-main{min-width:0;display:flex;flex-direction:column;gap:24px;}
.article-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px 40px;box-shadow:var(--sh-1);
}
.article-body{max-width:760px;font-size:16.5px;line-height:1.9;color:#22344A;}
.article-body p{margin:0 0 20px;}
.article-body h2{
  font-size:25px;font-weight:700;color:var(--ink);
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--blue);line-height:1.45;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin:30px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul li{list-style:disc;margin-bottom:10px;}
.article-body ol li{list-style:decimal;margin-bottom:10px;}
.article-body li::marker{color:var(--blue);}
.article-body img{border-radius:12px;margin:24px 0;box-shadow:var(--sh-1);}
.article-body a{color:var(--blue);border-bottom:1px solid var(--blue-line);}
.article-body a:hover{color:var(--orange);border-bottom-color:var(--orange);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--blue);
  background:var(--blue-soft);border-radius:0 10px 10px 0;color:#33475E;font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:#F2F5FA;font-weight:600;color:var(--ink);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body code{background:#F2F5FA;border-radius:6px;padding:2px 6px;font-size:14.5px;color:#20456F;}

.article-empty{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 32px;text-align:center;box-shadow:var(--sh-1);
}
.article-empty h2{font-size:22px;margin-bottom:12px;}
.article-empty p{color:var(--muted);margin-bottom:22px;}

/* 标签行 */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 24px;box-shadow:var(--sh-1);
}
.tag-row .tag-label{font-size:13px;font-weight:600;color:var(--muted);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--muted);background:#F4F6FA;border:1px solid var(--line);
  transition:all var(--t) var(--ease);
}
.tag:hover{color:var(--blue);border-color:var(--blue-line);background:var(--blue-soft);}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--blue);}
.side-list{display:flex;flex-direction:column;gap:2px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:44px;padding:8px 10px;border-radius:10px;font-size:14.5px;color:var(--ink);
}
.side-list a:hover{background:var(--blue-soft);color:var(--blue);}
.side-list a span{font-size:12px;color:#A9B4C4;}
.side-card.accent{background:linear-gradient(180deg,#F3F7FC,#FFFFFF);border-color:var(--blue-line);}
.side-card.accent p{font-size:14px;color:var(--muted);margin-bottom:16px;}
.side-note{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.75;}
.side-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.side-stats .stat b{display:block;font-size:22px;font-weight:700;color:var(--orange);line-height:1.3;}
.side-stats .stat span{font-size:12.5px;color:var(--muted);}

/* ---------- 通用板块 ---------- */
.section{padding-top:72px;}
.section-head{max-width:660px;margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--blue);letter-spacing:.6px;margin-bottom:12px;
}
.section-head .eyebrow i{display:block;width:20px;height:3px;border-radius:2px;background:var(--blue);}
.section-head h2{font-size:clamp(22px,2.6vw,29px);font-weight:700;}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px;}

/* 卡片网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);color:var(--ink);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--ink);}
.post-thumb{aspect-ratio:16/10;background:var(--blue-soft);overflow:hidden;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.02);}
.post-body{padding:22px 24px 20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-body h3{color:var(--blue);}
.post-body p{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.post-foot .read{font-weight:600;color:var(--blue);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:8px 24px;box-shadow:var(--sh-1);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:62px;padding:14px 0;font-size:16px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform var(--t) var(--ease);margin-right:4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--blue);}
.faq-item[open] summary{color:var(--blue);}
.faq-item .faq-body{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--muted);max-width:720px;}

/* ---------- 底部 CTA 与返回 ---------- */
.end-cta{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:36px;align-items:center;
  background:linear-gradient(120deg,#F2F7FC,#FFFFFF);
  border:1px solid var(--blue-line);border-radius:18px;padding:40px 44px;box-shadow:var(--sh-1);
}
.end-cta h2{font-size:24px;margin-bottom:12px;}
.end-cta p{color:var(--muted);font-size:15px;max-width:560px;}
.end-cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.back-links{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;font-size:14.5px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F2540;color:#C7D2E0;margin-top:88px;border-top:1px solid rgba(255,255,255,.08);}
.site-footer .container{padding-top:56px;padding-bottom:28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.site-footer p{font-size:14px;line-height:1.85;color:#9FB0C6;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:600;letter-spacing:.4px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:#9FB0C6;border-bottom:2px solid transparent;padding-bottom:1px;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--orange);}
.footer-contact li{font-size:14px;color:#9FB0C6;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  text-align:center;
}
.footer-bottom p{font-size:13px;color:#8194AB;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-layout{grid-template-columns:1fr;}
  .article-side{position:static;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:28px;}
  .end-cta{grid-template-columns:1fr;padding:34px 30px;}
  .end-cta-actions{flex-direction:row;flex-wrap:wrap;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  main{padding-bottom:64px;}
  .section{padding-top:56px;}
  .article-hero{padding:26px 22px 24px;border-radius:16px;}
  .article-panel{padding:24px 20px;border-radius:var(--r-card);}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:17.5px;}
  .grid-3{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .site-footer{margin-top:64px;}
  .btn{width:100%;}
  .nav-actions .btn{width:auto;}
  .end-cta-actions{flex-direction:column;align-items:stretch;}
  .end-cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .brand{font-size:15.5px;}
  .brand-mark{width:30px;height:30px;border-radius:10px;}
  .article-hero h1{font-size:23px;}
  .article-meta{gap:10px 14px;font-size:13px;}
  .footer-grid{grid-template-columns:1fr;}
  .side-stats{grid-template-columns:1fr 1fr;}
  .faq-list{padding:4px 16px;}
  .faq-item summary{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --brand:#1F5FA9;
  --brand-soft:rgba(31,95,169,.08);
  --brand-ring:rgba(31,95,169,.12);
  --ink:#0F2540;
  --accent:#F2703A;
  --accent-dark:#d95c28;
  --green:#1AA085;
  --bg:#F6F7FA;
  --card:#FFFFFF;
  --line:#E4E8F0;
  --muted:#5A6B80;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,37,64,.06), 0 8px 24px rgba(15,37,64,.06);
  --sh-2:0 12px 32px rgba(15,37,64,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-space:96px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Inter,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{font-family:var(--font);color:var(--ink);font-weight:700;letter-spacing:0;margin:0}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.28}
h2{font-size:clamp(24px,3vw,32px);line-height:1.35}
h3{font-size:19px;line-height:1.5}
h4{font-size:16px;line-height:1.5}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-space) 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ Header / Nav ============ */
.site-header{position:sticky;top:14px;z-index:60;margin-bottom:-72px;pointer-events:none}
.nav-shell{
  pointer-events:auto;
  display:flex;align-items:center;gap:18px;
  min-height:64px;padding:8px 14px 8px 18px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  backdrop-filter:blur(6px);
  transition:box-shadow .22s var(--ease),min-height .22s var(--ease);
}
.site-header.is-scrolled .nav-shell{min-height:56px;box-shadow:var(--sh-2)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:var(--ink);white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--brand);display:flex;align-items:center;justify-content:center;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 12px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--muted);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 20px;border-radius:var(--r-pill);
  background:var(--accent);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 6px 16px rgba(242,112,58,.24);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.nav-cta:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(242,112,58,.3)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;cursor:pointer;padding:0;
  align-items:center;justify-content:center;color:var(--ink);
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{display:none}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(242,112,58,.24)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.link-plain{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  font-size:15.5px;font-weight:600;color:var(--brand);
  border-bottom:2px solid transparent;border-radius:0;
}
.link-plain:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ============ Badge / Chip ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-green{background:rgba(26,160,133,.1);color:var(--green)}
.badge-accent{background:rgba(242,112,58,.1);color:var(--accent-dark)}

/* ============ Hero ============ */
.hero{padding:150px 0 88px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(31,95,169,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(31,95,169,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--brand);margin-bottom:20px;
}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--muted);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:26px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips li{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.chips svg{flex:0 0 18px;stroke:var(--brand)}
.hero-visual{position:relative;margin:0}
.hero-visual img{
  aspect-ratio:16/10;object-fit:cover;width:100%;
  border-radius:16px;border:1px solid var(--line);box-shadow:var(--sh-2);
}
.float-stat{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 20px;box-shadow:var(--sh-2);
}
.float-stat strong{display:block;font-size:24px;color:var(--accent);line-height:1.2}
.float-stat span{font-size:13px;color:var(--muted)}

/* ============ Section head ============ */
.section-head{max-width:720px;margin-bottom:44px}
.section-tag{
  display:inline-block;padding:4px 12px;border-radius:6px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;margin-bottom:14px;
}
.section-head h2{margin-bottom:14px}
.section-desc{color:var(--muted);font-size:16px;margin:0}

/* ============ Flow rows ============ */
.flow-list{margin-top:8px}
.flow-item{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.flow-item + .flow-item{margin-top:28px}
.flow-item:nth-child(even) .flow-media{order:2}
.flow-media{margin:0}
.flow-media img{
  aspect-ratio:16/10;object-fit:cover;width:100%;
  border-radius:12px;background:var(--brand-soft);
}
.flow-body h3{margin:14px 0 14px}
.point-list li{
  position:relative;padding-left:20px;margin-bottom:10px;
  font-size:15.5px;color:var(--muted);
}
.point-list li:last-child{margin-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:13px;
  width:7px;height:7px;border-radius:50%;background:var(--brand);
}
.point-list li strong{color:var(--ink);font-weight:600}

/* ============ Mid CTA ============ */
.cta-block{
  background:var(--card);border:1px solid var(--brand);border-radius:18px;
  padding:40px;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
  box-shadow:var(--sh-1);
}
.cta-block h2{margin-bottom:14px}
.cta-block p{color:var(--muted);font-size:15.5px}
.cta-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--muted);margin-bottom:12px;
}
.cta-list svg{flex:0 0 20px;margin-top:4px;stroke:var(--green)}
.form-grid{display:grid;gap:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  font-family:inherit;font-size:15px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-ring);
}
.form-note{font-size:13px;color:var(--muted);margin:0}
.form-hint{font-size:13.5px;color:var(--green);margin:0;min-height:20px}

/* ============ Checklist ============ */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#d7deeb}
.check-card h3{font-size:17px;margin:14px 0 10px}
.check-card p{font-size:15px;color:var(--muted);margin:0}
.check-num{font-size:28px;font-weight:700;color:rgba(31,95,169,.18);line-height:1}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 2fr;gap:56px;align-items:start}
.faq-side p{color:var(--muted);font-size:15.5px;margin-top:14px}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:62px;padding:16px 4px;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--brand)}
.faq-list summary .chev{
  flex:0 0 20px;transition:transform .22s var(--ease);stroke:var(--muted);
}
.faq-list details[open] summary .chev{transform:rotate(180deg);stroke:var(--brand)}
.faq-answer{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--muted);max-width:720px}

/* ============ Closing strip ============ */
.closing{
  background:var(--ink);border-radius:18px;padding:36px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.closing h2{color:#fff;font-size:22px;margin-bottom:8px}
.closing p{color:rgba(255,255,255,.72);font-size:15px;margin:0}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:var(--sec-space);padding:60px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:#fff;margin-bottom:14px}
.footer-grid p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin:0;max-width:280px}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-contact li{
  font-size:14px;color:rgba(255,255,255,.68);
  border-bottom:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col a:hover{color:#fff;border-bottom-color:var(--accent)}
.footer-contact li{margin-bottom:10px}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  text-align:center;
}
.footer-bottom p{font-size:13.5px;color:rgba(255,255,255,.5);margin:0}

/* ============ Responsive ============ */
@media (max-width:1024px){
  :root{--sec-space:72px}
  .hero{padding:140px 0 72px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-sub{max-width:100%}
  .flow-item{gap:28px;padding:24px}
  .cta-block{grid-template-columns:1fr;gap:32px;padding:32px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:28px}
  .footer-grid > div:first-child{grid-column:1/-1}
}
@media (max-width:900px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .site-header{top:10px;margin-bottom:-66px}
  .nav-shell{min-height:58px}
  .nav-drawer{
    display:block;position:fixed;inset:0;z-index:80;
    background:rgba(15,37,64,.45);
    opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
  }
  .nav-drawer.is-open{opacity:1;visibility:visible}
  .drawer-panel{
    position:absolute;top:0;left:0;right:0;
    background:#fff;border-bottom-left-radius:20px;border-bottom-right-radius:20px;
    padding:22px 24px 26px;transform:translateY(-12px);
    transition:transform .22s var(--ease);
    max-height:100vh;overflow-y:auto;
  }
  .nav-drawer.is-open .drawer-panel{transform:translateY(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
  .drawer-head .brand-mark{width:30px;height:30px;flex:0 0 30px}
  .drawer-close{
    width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
    background:#fff;cursor:pointer;font-size:20px;line-height:1;color:var(--ink);
  }
  .drawer-panel .nav-links{display:flex;flex-direction:column;align-items:stretch;gap:0;margin:0}
  .drawer-panel .nav-link{min-height:52px;padding:0 12px;border-radius:10px;font-size:16px;border-bottom:1px solid var(--line)}
  .drawer-panel .nav-link.is-active{background:var(--brand-soft)}
  .drawer-panel .nav-link.is-active::after{display:none}
  .drawer-cta{display:flex;justify-content:center;width:100%;margin-top:18px}
  .flow-item{grid-template-columns:1fr}
  .flow-item:nth-child(even) .flow-media{order:0}
}
@media (max-width:768px){
  :root{--sec-space:60px}
  body{font-size:16px}
  .container{padding:0 18px}
  .hero{padding:126px 0 60px}
  .hero-actions{gap:12px;flex-direction:column;align-items:stretch}
  .hero-actions .btn,.hero-actions .link-plain{width:100%;justify-content:center}
  .chips{gap:8px}
  .float-stat{left:12px;bottom:12px;padding:10px 16px}
  .float-stat strong{font-size:20px}
  .check-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .closing{padding:28px 24px}
  .closing .btn{width:100%}
}
@media (max-width:520px){
  .section-head{margin-bottom:32px}
  .flow-item{padding:18px}
  .cta-block{padding:22px}
  .badge{font-size:11.5px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --brand:#1F5FA9;
  --brand-ink:#164A85;
  --brand-soft:rgba(31,95,169,.08);
  --brand-line:rgba(31,95,169,.18);
  --accent:#F2703A;
  --accent-ink:#DC5F2A;
  --green:#1AA085;
  --ink:#0F2540;
  --muted:#5A6B80;
  --bg:#F6F7FA;
  --card:#FFFFFF;
  --line:#E4E8F0;
  --alt:#F0F2F7;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --s1:0 1px 2px rgba(15,37,64,.06);
  --s2:0 8px 24px rgba(15,37,64,.06);
  --s3:0 12px 32px rgba(15,37,64,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sect:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Inter,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-ink);}
p{margin:0 0 16px;}
h1,h2,h3,h4{color:var(--ink);font-weight:700;letter-spacing:-.01em;margin:0;line-height:1.3;}
h1{font-size:clamp(30px,4.4vw,44px);line-height:1.22;}
h2{font-size:clamp(24px,3vw,32px);}
h3{font-size:19px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
section[id],.entry{scroll-margin-top:120px;}

/* Foundation 覆盖 */
.foundation-min,.row,.column{}
body.foundation body{background:var(--bg);}
.button,.badge,button{letter-spacing:0;}
.badge{
  display:inline-block;
  font-size:12px;
  line-height:1.6;
  font-weight:600;
  padding:4px 10px;
  border-radius:6px;
  background:var(--brand-soft);
  color:var(--brand);
  border:0;
  text-transform:none;
}
.callout{margin:0;padding:0;border:0;background:none;}

/* 布局 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sect) 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin:0 0 40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-tag{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.06em;
  margin-bottom:12px;
  padding:4px 10px;
  border-radius:6px;
  background:var(--brand-soft);
}
.section-head h2{margin:0 0 12px;}
.section-head p{margin:0;color:var(--muted);font-size:16px;}

/* 导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px 0 0;
  background:linear-gradient(180deg,rgba(246,247,250,.97) 62%,rgba(246,247,250,0));
}
.nav-shell{
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  max-width:1200px;
  height:64px;
  margin:0 auto;
  padding:0 12px 0 20px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--s2);
  transition:height .2s var(--ease),box-shadow .2s var(--ease);
}
@media (min-width:901px){.nav-shell{backdrop-filter:blur(6px);}}
.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--brand);}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--brand);
  flex:none;
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 12px;
  border-radius:8px;
  font-size:14.5px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:5px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
.nav-cta{min-height:42px;padding:10px 20px;font-size:14.5px;margin-left:6px;}
.nav-toggle{display:none;}
.drawer-head,.drawer-cta{display:none;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(242,112,58,.22);}
.btn-accent:hover{background:var(--accent-ink);color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(242,112,58,.28);}
.btn-accent:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand-line);color:var(--brand);transform:translateY(-2px);box-shadow:var(--s2);}
.btn-lg{min-height:52px;padding:14px 30px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;}
.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);}
.link-arrow:hover::after{transform:rotate(45deg) translate(2px,-2px);}

/* Hero */
.hero{position:relative;padding:56px 0 76px;overflow:hidden;}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(31,95,169,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(31,95,169,.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,#000 40%,transparent);
  mask-image:linear-gradient(180deg,#000 40%,transparent);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:var(--r-pill);
  padding:6px 14px;
  margin-bottom:20px;
}
.hero h1{margin:0 0 16px;}
.hero-sub{font-size:17px;color:var(--muted);margin:0 0 28px;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--s1);
  font-size:13px;
  color:var(--muted);
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green);}
.hero-visual{position:relative;margin:0;}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;box-shadow:var(--s2);}
.hero-badge{
  position:absolute;
  left:-18px;
  bottom:26px;
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:12px 18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s3);
}
.hero-badge strong{font-size:28px;line-height:1;color:var(--accent);font-weight:700;}
.hero-badge span{font-size:13px;color:var(--muted);}

/* 目录 + 编号清单 */
.catalog{display:grid;grid-template-columns:280px minmax(0,1fr);gap:40px;align-items:start;}
.catalog-rail{
  position:sticky;
  top:104px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  padding:22px;
}
.rail-title{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.06em;margin:0 0 14px;}
.rail-list{display:flex;flex-direction:column;gap:4px;}
.rail-link{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:8px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--muted);
  border-left:2px solid transparent;
  transition:all .2s var(--ease);
}
.rail-link:hover{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.rail-note{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
.rail-note p{font-size:13.5px;color:var(--muted);margin:0 0 10px;}
.catalog-list{display:flex;flex-direction:column;gap:20px;}
.entry{
  display:grid;
  grid-template-columns:96px minmax(0,1fr);
  gap:24px;
  padding:28px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.entry:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--brand-line);}
.entry-no{font-size:52px;font-weight:700;line-height:1;letter-spacing:-.03em;color:rgba(31,95,169,.16);}
.entry-body h3{margin:12px 0 0;font-size:20px;}
.entry-body > p{
  margin:10px 0 0;
  color:var(--muted);
  font-size:15.5px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entry-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px;margin-top:18px;}
.entry-points li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);}
.entry-points li::before{content:"";position:absolute;left:0;top:12px;width:7px;height:7px;border-radius:2px;background:var(--brand);opacity:.75;}

/* 页中 CTA */
.cta-panel{
  display:grid;
  grid-template-columns:minmax(0,1fr) 400px;
  gap:44px;
  padding:44px;
  border-radius:18px;
  background:rgba(31,95,169,.06);
  border:1px solid var(--brand-line);
}
.cta-copy h2{margin:0 0 14px;font-size:clamp(22px,2.6vw,28px);}
.cta-copy p{color:var(--muted);margin:0 0 20px;}
.cta-points{display:flex;flex-direction:column;gap:10px;}
.cta-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--muted);}
.cta-points li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;background:var(--green);}
.cta-form{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--s2);padding:24px;}
.field{display:block;margin-bottom:16px;}
.field span{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(31,95,169,.12);
}
.form-note{font-size:13px;color:var(--muted);margin:12px 0 0;}
.form-status{font-size:14px;font-weight:600;color:var(--green);min-height:22px;margin:8px 0 0;}

/* 数据条 */
.section-band{position:relative;background-color:#fff;}
.section-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;
  background-position:center;
  opacity:.14;
}
.section-band > .container{position:relative;z-index:1;}
.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--s1);padding:24px;}
.kpi strong{display:block;font-size:40px;line-height:1;font-weight:700;letter-spacing:-.02em;color:var(--accent);}
.kpi em{font-size:22px;font-style:normal;}
.kpi span{display:block;margin-top:12px;font-weight:600;color:var(--ink);font-size:15px;}
.kpi p{margin:6px 0 0;font-size:14px;color:var(--muted);line-height:1.7;}

/* 挑区建议 */
.advice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.advice-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--s1);
  padding:26px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.advice-card:hover{transform:translateY(-2px);box-shadow:var(--s3);border-color:var(--brand-line);}
.advice-card h3{margin:0 0 10px;font-size:18px;}
.advice-card p{margin:0;color:var(--muted);font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:rgba(31,95,169,.15);color:var(--brand-ink);}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:48px;align-items:start;}
.faq-intro .section-head{margin-bottom:0;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{border-color:var(--brand-line);box-shadow:var(--s2);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:62px;
  padding:16px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"";
  flex:none;
  width:10px;
  height:10px;
  border-right:2px solid var(--muted);
  border-bottom:2px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .22s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--brand);}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.8;}
.faq-body p{margin:0;}
.faq-foot{display:flex;flex-wrap:wrap;gap:24px;margin-top:24px;}

/* 页脚 */
.site-footer{background:var(--ink);color:#B9C6D8;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;
  gap:32px;
  padding:64px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.site-footer p{margin:0;font-size:14px;line-height:1.8;color:#9FB0C6;max-width:300px;}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#B9C6D8;transition:color .2s var(--ease),border-color .2s var(--ease);border-bottom:2px solid transparent;padding-bottom:2px;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--accent);}
.footer-contact li{font-size:14px;color:#9FB0C6;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:20px 0 32px;text-align:center;}
.footer-bottom p{margin:0 auto;font-size:13px;color:#8FA1B8;max-width:none;}

/* 响应式 */
@media (max-width:1180px){
  .nav-link{padding:0 10px;font-size:14px;}
}
@media (max-width:1024px){
  :root{--sect:72px;}
  .catalog{grid-template-columns:1fr;gap:24px;}
  .catalog-rail{position:static;}
  .rail-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-sub{max-width:none;}
  .cta-panel{grid-template-columns:1fr;padding:28px;gap:28px;}
  .kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:28px;padding:48px 0 32px;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;
    inset:0;
    z-index:80;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:20px 20px 32px;
    background:#fff;
    overflow-y:auto;
  }
  .nav-links.is-open{display:flex;}
  .drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:6px 4px 16px;
    border-bottom:1px solid var(--line);
    margin-bottom:8px;
  }
  .drawer-head span{font-weight:700;color:var(--ink);}
  .drawer-close{
    min-height:44px;
    padding:8px 16px;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    background:#fff;
    color:var(--muted);
    font-size:14px;
    font-weight:600;
    cursor:pointer;
  }
  .nav-link{
    height:52px;
    padding:0 8px;
    font-size:16px;
    color:var(--ink);
    border-bottom:1px solid var(--line);
    border-radius:0;
    white-space:normal;
  }
  .nav-link:hover{background:transparent;}
  .nav-link.is-active::after{display:none;}
  .drawer-cta{display:inline-flex;margin-top:auto;width:100%;}
  .nav-cta{display:none;}
  .nav-toggle{
    display:inline-flex;
    align-items:center;
    gap:8px;
    min-height:44px;
    margin-left:auto;
    padding:8px 16px;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    background:#fff;
    color:var(--ink);
    font-size:14px;
    font-weight:600;
    cursor:pointer;
  }
  .nav-toggle-bar{position:relative;width:16px;height:2px;background:currentColor;}
  .nav-toggle-bar::before,.nav-toggle-bar::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;}
  .nav-toggle-bar::before{top:-5px;}
  .nav-toggle-bar::after{top:5px;}
  .advice-grid{grid-template-columns:1fr;}
}
@media (max-width:768px){
  :root{--sect:60px;}
  .container{padding:0 18px;}
  .hero{padding:36px 0 56px;}
  .entry{grid-template-columns:1fr;gap:12px;padding:22px;}
  .entry-no{font-size:38px;}
  .entry-points{grid-template-columns:1fr;gap:10px;}
  .hero-actions .btn{width:100%;}
  .nav-shell{height:60px;padding:0 10px 0 14px;gap:10px;}
  .brand{font-size:15px;}
}
@media (max-width:520px){
  .rail-list{grid-template-columns:1fr;}
  .kpi-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .hero-badge{left:12px;bottom:12px;padding:10px 14px;}
  .hero-badge strong{font-size:22px;}
  h1{font-size:28px;}
}

/* roulang page: category3 */
:root{
  --primary:#1F5FA9;
  --primary-soft:rgba(31,95,169,.08);
  --ink:#0F2540;
  --accent:#F2703A;
  --green:#1AA085;
  --bg:#F6F7FA;
  --card:#FFFFFF;
  --line:#E4E8F0;
  --muted:#5A6B80;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(15,37,64,.06),0 8px 24px rgba(15,37,64,.06);
  --shadow-2:0 18px 44px rgba(15,37,64,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --section-gap:96px;
  --gap:24px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,"Inter",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:#154C89;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:8px;z-index:99;}
.skip-link:focus{left:16px;top:16px;}

/* ===== 悬浮胶囊导航 ===== */
.site-header{position:fixed;top:14px;left:0;right:0;z-index:60;transition:top .2s var(--ease);}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  height:64px;padding:0 12px 0 18px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  transition:height .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled .nav-shell{height:56px;box-shadow:0 10px 28px rgba(15,37,64,.10);}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);white-space:nowrap;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--primary);
  display:flex;align-items:center;justify-content:center;flex:0 0 34px;
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 13px;
  font-size:15px;color:var(--muted);border-radius:10px;border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--primary);background:rgba(31,95,169,.05);}
.nav-link.is-active{color:var(--primary);font-weight:600;border-bottom-color:var(--primary);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;
  background:var(--accent);color:#fff;font-weight:600;font-size:15px;border-radius:var(--radius-pill);
  box-shadow:0 6px 16px rgba(242,112,58,.24);transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{background:#DE5F2B;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(242,112,58,.28);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-pill);font-weight:600;font-size:16px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(242,112,58,.24);}
.btn-primary:hover{background:#DE5F2B;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(242,112,58,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C9D8EA;}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--primary);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;
  font-size:12px;line-height:1.6;background:var(--primary-soft);color:var(--primary);font-weight:600;
}
.badge-green{background:rgba(26,160,133,.10);color:var(--green);}
.badge-accent{background:rgba(242,112,58,.10);color:var(--accent);}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--muted);font-weight:500;}

/* ===== Hero ===== */
.page-hero{padding:132px 0 72px;position:relative;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(15,37,64,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(15,37,64,.045) 1px,transparent 1px);
  background-size:44px 44px;opacity:.7;pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:20px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:#B7C1CE;}
.hero-title{font-size:clamp(28px,4.2vw,42px);line-height:1.32;font-weight:700;letter-spacing:-.2px;}
.hero-title em{font-style:normal;color:var(--primary);}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.9;color:var(--muted);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--muted);box-shadow:0 1px 2px rgba(15,37,64,.04);
}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--green);display:block;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:16px;overflow:hidden;background:var(--primary-soft);
  aspect-ratio:16/10;box-shadow:var(--shadow-1);border:1px solid var(--line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:-22px;bottom:26px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:16px 20px;box-shadow:0 12px 32px rgba(15,37,64,.10);min-width:186px;
}
.hero-float strong{display:block;font-size:26px;color:var(--accent);line-height:1.2;}
.hero-float span{font-size:13px;color:var(--muted);}

/* ===== 板块 ===== */
.section{padding:var(--section-gap) 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);
  letter-spacing:.02em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--primary);display:block;}
.section-title{font-size:clamp(22px,2.6vw,30px);line-height:1.45;font-weight:700;}
.section-desc{margin-top:14px;color:var(--muted);font-size:16.5px;}

/* ===== 大卡 + 参数条 ===== */
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(15,37,64,.10);}
.feature-split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);}
.feature-media{position:relative;background:var(--primary-soft);min-height:280px;}
.feature-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.feature-body{padding:34px 36px;}
.feature-body h3{font-size:21px;line-height:1.5;font-weight:700;}
.feature-body .lead{margin-top:12px;color:var(--muted);font-size:16px;}
.point-list{margin-top:20px;display:grid;gap:12px;}
.point-list li{position:relative;padding-left:20px;font-size:15.5px;color:var(--ink);}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;
  background:var(--primary);opacity:.85;transform:rotate(45deg);
}
.spec-bar{
  margin-top:26px;padding-top:8px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:36px;
}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px;
}
.spec-key{color:var(--muted);white-space:nowrap;}
.spec-val{color:var(--ink);font-weight:600;text-align:right;}
.spec-val.accent{color:var(--accent);}

/* ===== 双列：大卡区 + 侧栏 CTA ===== */
.split-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;align-items:start;}
.card-stack{display:grid;gap:24px;}
.mini-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.mini-card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(15,37,64,.10);border-color:#D5DEEC;}
.mini-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.mini-num{
  font-size:30px;font-weight:700;color:var(--primary);opacity:.22;line-height:1;letter-spacing:-1px;
}
.mini-card h3{font-size:18px;font-weight:700;line-height:1.5;}
.mini-card p{color:var(--muted);font-size:15.5px;margin-top:8px;}
.mini-card .spec-bar{margin-top:22px;padding-top:0;border-top:0;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:28px;}
.mini-card .spec-row{padding:10px 0;font-size:14px;}

.side-sticky{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:#fff;border:1px solid #C9D8EA;border-radius:18px;padding:28px 26px;
  box-shadow:0 14px 36px rgba(31,95,169,.10);
}
.side-card h3{font-size:19px;font-weight:700;line-height:1.5;}
.side-card .side-note{margin-top:10px;font-size:14.5px;color:var(--muted);}
.field{margin-top:16px;}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:7px;}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#FBFCFE;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(31,95,169,.12);
}
.form-btn{margin-top:20px;}
.form-hint{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.7;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-1);
}
.contact-card h4{font-size:15px;font-weight:700;margin-bottom:12px;}
.contact-card li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--muted);}
.contact-card li:last-child{border-bottom:0;}
.contact-card li b{color:var(--ink);font-weight:600;}

/* ===== 编号清单 / 安全建议 ===== */
.secure-panel{
  background:var(--card);border:1px solid var(--line);border-radius:18px;padding:36px 38px;box-shadow:var(--shadow-1);
}
.secure-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 32px;margin-top:8px;}
.secure-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);}
.secure-item .num{
  flex:0 0 34px;height:34px;border-radius:10px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.secure-item h4{font-size:16px;font-weight:700;}
.secure-item p{font-size:14.5px;color:var(--muted);margin-top:6px;}
.notice-line{
  margin-top:26px;display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:12px;
  background:rgba(26,160,133,.08);border:1px solid rgba(26,160,133,.22);font-size:14.5px;color:#14675A;
}
.notice-line b{color:#0F5147;}

/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start;}
.faq-side p{color:var(--muted);margin-top:14px;font-size:16px;}
.faq-side .btn{margin-top:24px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:60px;padding:16px 4px;font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"▾";color:var(--primary);font-size:15px;transition:transform .2s var(--ease);flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item summary:hover{color:var(--primary);}
.faq-body{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-body strong{color:var(--ink);}

/* ===== 页尾引导带 ===== */
.cta-band{
  background:var(--ink);border-radius:20px;padding:44px 46px;color:#fff;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.5;color:#fff;}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.74);font-size:15.5px;}
.cta-band-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.10);border-color:#fff;color:#fff;}

/* ===== 页脚 ===== */
.site-footer{background:#0F2540;color:rgba(255,255,255,.72);margin-top:24px;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px;}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-col h4{font-size:14.5px;color:#fff;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;border-bottom:2px solid transparent;padding-bottom:2px;}
.footer-col a:hover{color:#fff;border-bottom-color:var(--accent);}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.66);}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);text-align:center;
}
.footer-bottom p{font-size:13.5px;color:rgba(255,255,255,.56);}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  :root{--section-gap:72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-float{left:16px;bottom:-18px;}
  .feature-split{grid-template-columns:1fr;}
  .feature-media{min-height:220px;position:relative;}
  .feature-media img{position:relative;height:auto;aspect-ratio:16/9;}
  .split-layout{grid-template-columns:1fr;}
  .side-sticky{position:static;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .cta-band-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:768px){
  :root{--section-gap:56px;}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:0 18px 40px rgba(15,37,64,.14);
    display:none;
  }
  .site-header.is-open .nav-links{display:flex;}
  .nav-link{height:52px;padding:0 14px;font-size:16px;border-bottom:1px solid var(--line);border-radius:10px;}
  .nav-link.is-active{border-bottom-color:var(--line);border-left:3px solid var(--primary);padding-left:12px;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
  .nav-shell{padding:0 12px 0 14px;}
  .page-hero{padding:112px 0 56px;}
  .hero-actions .btn{width:100%;}
  .feature-body{padding:26px 22px;}
  .spec-bar{grid-template-columns:1fr;column-gap:0;}
  .secure-panel{padding:26px 22px;}
  .secure-grid{grid-template-columns:1fr;}
  .mini-card{padding:22px 20px;}
  .mini-card .spec-bar{grid-template-columns:1fr;column-gap:0;}
  .cta-band{border-radius:16px;padding:30px 22px;}
  .cta-band-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto;min-width:0;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  body{font-size:15.5px;}
  .hero-title{font-size:26px;}
  .hero-sub{font-size:15.5px;}
  .section-title{font-size:22px;}
  .mini-num{font-size:24px;}
  .faq-item summary{font-size:15.5px;}
}