/* roulang page: index */
:root{
  --brand:#1D5FE0;
  --brand-hover:#1750C4;
  --brand-active:#1344A8;
  --brand-soft:#EAF0FE;
  --brand-line:#C7D8F9;
  --amber:#E8862B;
  --amber-soft:#FDF2E4;
  --ink:#131A24;
  --ink-2:#5B6B7F;
  --ink-3:#93A1B3;
  --line:#E3E9F2;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --bg-soft:#EEF3FB;
  --navy:#0F1B2D;
  --ok:#1FA971;
  --warn:#E08700;
  --err:#D64545;
  --r-card:14px;
  --r-big:18px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(19,26,36,.04);
  --sh2:0 8px 24px -12px rgba(19,26,36,.12);
  --sh3:0 18px 48px -20px rgba(19,26,36,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:44px;font-weight:700;line-height:1.25;letter-spacing:-.02em}
h2{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.01em}
h3{font-size:22px;font-weight:600;line-height:1.4}
.num{font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-alt)}
.section-soft{background:var(--bg-soft)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 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:15.5px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:none;
  transition:transform 180ms var(--ease),background-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--brand-hover);box-shadow:var(--sh2);transform:translateY(-1px);color:#fff}
.btn-primary:active{background:var(--brand-active);transform:scale(.99)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-line{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:var(--brand-line);color:var(--brand);background:#fff}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px}
.btn-xs{height:32px;padding:0 14px;font-size:13.5px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;box-shadow:0 0 0 2px #fff;
}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-arrow svg{transition:transform 180ms var(--ease)}
.link-arrow:hover{text-decoration:none;color:var(--brand-hover)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.nav-grid{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:72px;gap:16px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:26px}
.nav-left{justify-self:start}
.nav-right{justify-self:end;gap:20px}
.logo{
  justify-self:center;display:inline-flex;align-items:center;gap:10px;
  font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.01em;
  height:36px;white-space:nowrap;
}
.logo:hover{text-decoration:none;color:var(--ink)}
.logo svg{width:28px;height:28px;flex:none}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--brand);transition:right 200ms var(--ease);
}
.nav-link:hover{color:var(--brand);text-decoration:none}
.nav-link:hover::after{right:0}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{right:0}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:6px;cursor:pointer;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform 220ms var(--ease),opacity 180ms var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 20px;color:var(--ink);
  font-size:16px;border-bottom:1px solid var(--line);
}
.mobile-panel a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none}
.mobile-panel .panel-cta{padding:16px 20px 0;border:0}
@media (max-width:1023px){
  .nav-grid{display:flex;align-items:center;justify-content:space-between;height:64px}
  .nav-left,.nav-right{display:none}
  .logo{order:1}
  .nav-toggle{display:flex;order:2}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.9;
}
.hero-bg::after{content:"";position:absolute;inset:0;background:rgba(244,247,252,.86)}
.hero .container{position:relative;z-index:1}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  padding:76px 0 84px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--brand-line);color:var(--brand);
  font-size:13px;font-weight:600;
}
.hero h1{margin:20px 0 0;max-width:640px}
.hero-sub{
  margin-top:18px;max-width:560px;font-size:18px;line-height:1.75;color:var(--ink-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-badges{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px}
.trust-badges li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2)}
.trust-badges svg{width:18px;height:18px;color:var(--brand);flex:none}
.hero-media{
  border-radius:var(--r-big);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh3);background:#fff;
}
.hero-media img{width:100%;aspect-ratio:16 / 11;object-fit:cover}

/* ---------- 通用板块头 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head .eyebrow{
  display:block;font-size:13.5px;font-weight:600;color:var(--brand);
  letter-spacing:.06em;margin-bottom:10px;
}
.section-head p{margin-top:12px;max-width:660px;color:var(--ink-2);font-size:16px}

/* ---------- 痛点卡 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pain-card{
  display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh1);
  transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
}
.pain-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--brand-line)}
.pain-card:nth-child(even){margin-top:28px}
.pain-icon{
  flex:none;width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.pain-icon svg{width:22px;height:22px}
.pain-card h3{font-size:18px;font-weight:600;line-height:1.5}
.pain-card p{margin-top:8px;font-size:15px;color:var(--ink-2);line-height:1.75}

/* ---------- 方案非对称栅格 ---------- */
.solution-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px}
.solution-main{
  position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-big);
  overflow:hidden;box-shadow:var(--sh1);
  transition:box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.solution-main:hover{box-shadow:var(--sh2);border-color:var(--brand-line)}
.solution-main .sm-media{height:100%;min-height:280px}
.solution-main .sm-media img{width:100%;height:100%;object-fit:cover}
.solution-main .sm-body{padding:34px 32px;display:flex;flex-direction:column;gap:14px}
.solution-side{display:grid;gap:24px}
.solution-card{
  display:flex;flex-direction:column;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh1);
  transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
}
.solution-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--brand-line)}
.solution-card .s-icon{
  width:44px;height:44px;border-radius:12px;background:var(--amber-soft);color:var(--amber);
  display:flex;align-items:center;justify-content:center;
}
.solution-card .s-icon svg{width:22px;height:22px}
.solution-card p{font-size:15px;color:var(--ink-2);line-height:1.75}
.solution-main h3{font-size:24px;font-weight:700;line-height:1.35}
.solution-main p{color:var(--ink-2);font-size:15.5px;line-height:1.8}
.solution-main .s-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1;white-space:nowrap;
}
.badge-blue{background:var(--brand-soft);color:var(--brand)}
.badge-amber{background:var(--amber-soft);color:var(--amber)}
.badge-line{background:var(--bg-soft);color:var(--ink-2)}

/* ---------- 数据区 ---------- */
.stat-band{background:var(--navy);color:#fff}
.stat-band .section-head p{color:rgba(255,255,255,.72)}
.stat-band .eyebrow{color:#8FB4F5}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}
.stat-num{font-size:46px;font-weight:700;line-height:1.1;color:#fff;letter-spacing:-.02em}
.stat-num small{font-size:18px;font-weight:600;margin-left:6px;color:#8FB4F5}
.stat-label{margin-top:10px;font-size:15px;color:rgba(255,255,255,.9)}
.stat-note{margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.6}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{
  display:flex;gap:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px;box-shadow:var(--sh1);color:var(--ink);
  transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
}
.news-card:hover{text-decoration:none;box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--brand-line);color:var(--ink)}
.news-card:hover h3{color:var(--brand)}
.news-thumb{flex:none;width:160px;height:108px;border-radius:var(--r-img);overflow:hidden;background:var(--bg-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-body h3{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color 180ms var(--ease);
}
.news-body p{
  font-size:14.5px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:auto;font-size:13.5px;color:var(--ink-3)}
.news-more{display:flex;justify-content:center;margin-top:36px}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:32px;
}
.empty-state svg{width:48px;height:48px;color:rgba(29,95,224,.35)}
.empty-state strong{font-size:16px;font-weight:600}
.empty-state span{font-size:13.5px;color:var(--ink-2)}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.contact-copy p{margin-top:16px;color:var(--ink-2);font-size:16px}
.contact-points{margin-top:28px;display:grid;gap:14px}
.contact-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2)}
.contact-points svg{width:20px;height:20px;color:var(--brand);flex:none;margin-top:3px}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-big);
  padding:32px;box-shadow:var(--sh2);
}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.form-field label{font-size:14px;font-weight:600;color:var(--ink)}
.form-field input,.form-field select,.form-field textarea{
  width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;font-size:16px;line-height:1.6;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.form-field textarea{min-height:110px;resize:vertical}
.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(29,95,224,.12);
}
.form-field.has-error input,.form-field.has-error select{border-color:var(--err)}
.field-error{font-size:13px;color:var(--err)}
.privacy-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-2);line-height:1.6;margin:6px 0 22px}
.privacy-row input{
  appearance:none;-webkit-appearance:none;width:18px;height:18px;flex:none;margin-top:3px;
  border:1px solid var(--ink-3);border-radius:5px;background:#fff;cursor:pointer;position:relative;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease);
}
.privacy-row input:checked{background:var(--brand);border-color:var(--brand)}
.privacy-row input:checked::after{
  content:"";position:absolute;left:5px;top:1px;width:5px;height:10px;
  border:2px solid #fff;border-top:0;border-left:0;transform:rotate(45deg);
}
.form-success{
  display:flex;align-items:center;gap:12px;padding:18px 20px;border-radius:var(--r-btn);
  background:#EAF7F1;border:1px solid #BFE7D6;color:#146E4B;font-size:15px;font-weight:600;
}
.form-success svg{width:22px;height:22px;color:var(--ok);flex:none}

/* ---------- 隐私说明卡 ---------- */
.privacy-card{
  display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:flex-start;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--r-big);padding:34px;
}
.privacy-card .p-icon{
  width:56px;height:56px;border-radius:16px;background:#fff;border:1px solid var(--brand-line);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.privacy-card .p-icon svg{width:26px;height:26px}
.privacy-card p{margin-top:12px;font-size:15.5px;color:var(--ink-2);line-height:1.85;max-width:860px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.faq-item:hover{border-color:var(--brand-line)}
.faq-item[open]{box-shadow:var(--sh1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:transform 240ms var(--ease)}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-body{padding:0 24px 22px;font-size:15.5px;color:var(--ink-2);line-height:1.85}

/* ---------- 页脚 CTA 条 ---------- */
.cta-band{background:var(--navy);color:#fff;padding:44px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-inner p{font-size:18px;font-weight:600;color:#fff;max-width:620px}
.cta-inner .btn-primary{background:#fff;color:var(--brand)}
.cta-inner .btn-primary:hover{background:var(--brand-soft);color:var(--brand-hover)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy);color:#fff;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .fb-logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#fff}
.footer-brand .fb-logo svg{width:26px;height:26px;color:#8FB4F5}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:none;display:inline-block;transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- 浮动按钮与弹层 ---------- */
.fab{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;height:50px;padding:0 22px;
  border-radius:999px;background:var(--brand);color:#fff;border:0;cursor:pointer;
  font-size:15px;font-weight:600;box-shadow:var(--sh3);
  transition:background-color 180ms var(--ease),transform 180ms var(--ease);
}
.fab:hover{background:var(--brand-hover);transform:translateY(-2px)}
.fab svg{width:20px;height:20px}
.modal-mask{
  position:fixed;inset:0;z-index:90;background:rgba(15,27,45,.45);
  display:none;align-items:center;justify-content:center;padding:24px;
}
.modal-mask.is-open{display:flex}
.modal{
  position:relative;width:100%;max-width:520px;background:#fff;border-radius:var(--r-big);
  box-shadow:var(--sh3);padding:34px;
}
.modal h3{font-size:21px;font-weight:700}
.modal > p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.modal form{margin-top:22px}
.modal-close{
  position:absolute;right:10px;top:10px;width:44px;height:44px;border-radius:var(--r-btn);
  border:0;background:transparent;color:var(--ink-2);font-size:24px;line-height:1;cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.modal-close:hover{background:var(--bg-soft);color:var(--ink)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  h1{font-size:38px}
  h2{font-size:28px}
  h3{font-size:20px}
  .container{padding:0 20px}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:56px 0 64px}
  .hero-sub{font-size:17px}
  .solution-grid{grid-template-columns:1fr}
  .solution-main{grid-template-columns:1fr}
  .solution-main .sm-media{min-height:220px;max-height:260px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .contact-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec:56px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  body{font-size:15.5px}
  .container{padding:0 16px}
  .pain-grid{grid-template-columns:1fr}
  .pain-card:nth-child(even){margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .news-card{flex-direction:column;gap:14px}
  .news-thumb{width:100%;height:180px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .form-card{padding:24px 20px}
  .privacy-card{grid-template-columns:1fr;padding:26px 20px}
  .hero-actions .btn{width:100%}
  .modal-mask{padding:0;align-items:flex-end}
  .modal{max-width:none;border-radius:18px 18px 0 0;max-height:90vh;overflow-y:auto;padding:28px 20px}
  .fab{right:16px;bottom:16px;height:46px;padding:0 18px;font-size:14.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .stat-grid{grid-template-columns:1fr}
  .stat-num{font-size:38px}
  .trust-badges{gap:10px 18px}
  .hero-tag{font-size:12.5px}
}

/* roulang page: article */
:root{
  --primary:#1D5FE0;
  --primary-hover:#1750C4;
  --primary-active:#1344A8;
  --primary-soft:#EAF0FE;
  --primary-line:#C7D8F9;
  --accent:#E8862B;
  --accent-soft:#FDF2E4;
  --text:#131A24;
  --text-2:#5B6B7F;
  --text-3:#93A1B3;
  --line:#E3E9F2;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --bg-soft:#EEF3FB;
  --dark:#0F1B2D;
  --success:#1FA971;
  --warning:#E08700;
  --danger:#D64545;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(19,26,36,.04);
  --sh2:0 8px 24px -12px rgba(19,26,36,.12);
  --sh3:0 18px 48px -20px rgba(19,26,36,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--primary);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{text-decoration:underline}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
h1{font-size:44px;font-weight:700;line-height:1.25;letter-spacing:-.02em}
h2{font-size:32px;font-weight:700;line-height:1.3}
h3{font-size:22px;font-weight:600;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:16px;
}
.nav-left{display:flex;align-items:center;gap:28px;justify-self:start}
.nav-right{display:flex;align-items:center;gap:28px;justify-self:end}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:20px;font-weight:700;color:var(--text);
  letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--text)}
.brand svg{width:28px;height:28px;color:var(--primary);flex:0 0 auto}
.nav-link{
  position:relative;
  font-size:15px;color:var(--text);
  padding:6px 0;line-height:1.6;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--primary);transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--primary);text-decoration:none}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{width:20px}
.nav-cta{margin-left:8px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;height:40px;padding:0 20px}
.btn-primary:hover{background:var(--primary-hover);box-shadow:var(--sh2);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:scale(.99)}
.btn-lg{height:48px;padding:0 24px;font-size:16px}
.btn-sm{height:32px;padding:0 14px;font-size:13.5px}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);height:40px;padding:0 20px}
.btn-ghost:hover{background:var(--primary-soft)}
.btn-text{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-text svg{width:16px;height:16px;transition:transform 180ms var(--ease)}
.btn-text:hover{text-decoration:none;color:var(--primary-hover)}
.btn-text:hover svg{transform:translateX(2px)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--text);
  transition:transform 200ms var(--ease),top 200ms var(--ease);
}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}
.mobile-panel{
  display:none;border-top:1px solid var(--line);background:#fff;
}
.mobile-panel.is-open{display:block}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;padding:0 24px;
  color:var(--text);font-size:15px;border-bottom:1px solid var(--line);
}
.mobile-panel a:hover{background:var(--bg-alt);text-decoration:none;color:var(--primary)}
.mobile-panel .mobile-cta{padding:16px 24px;border-bottom:none}
.mobile-panel .mobile-cta .btn{width:100%}

/* ============ PAGE HERO / BREADCRUMB ============ */
.page-head{
  background-color:var(--bg-soft);
  background-image:linear-gradient(rgba(244,247,252,.9),rgba(244,247,252,.94)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:36px 0 40px;
}
.breadcrumb{font-size:13.5px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{
  color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-title{
  margin-top:18px;
  font-size:44px;line-height:1.25;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13.5px;color:var(--text-2);
}
.meta-sep{width:1px;height:14px;background:var(--line)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:var(--primary-soft);color:var(--primary);
}
.badge-accent{background:var(--accent-soft);color:var(--accent)}

/* ============ LAYOUT ============ */
.section{padding:96px 0}
.section-tight{padding:56px 0}
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;
}
.article-body{max-width:780px;font-size:17px;line-height:1.9;color:var(--text)}
.article-body>*+*{margin-top:16px}
.article-body h2{font-size:26px;margin-top:40px;margin-bottom:16px}
.article-body h3{font-size:20px;margin-top:28px;margin-bottom:12px}
.article-body p{color:#1B2431}
.article-body ul,.article-body ol{padding-left:20px;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body img{margin:24px auto;border-radius:var(--r-img)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--bg-alt);
  border-left:3px solid var(--primary);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text-2);
}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--bg-soft)}
.article-body pre{
  background:var(--bg-alt);border-radius:10px;padding:16px;overflow-x:auto;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
.article-body a{color:var(--primary)}
.article-body a:hover{text-decoration:underline}
.cover-figure{margin:0 0 32px}
.cover-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--r-img)}
.cover-figure figcaption{font-size:13.5px;color:var(--text-3);text-align:center;margin-top:10px}

/* ============ SIDEBAR ============ */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh1);
}
.side-sticky{position:sticky;top:96px;display:grid;gap:24px}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px}
.side-toc a{
  display:block;font-size:14px;color:var(--text-2);padding:6px 0 6px 12px;
  border-left:2px solid transparent;line-height:1.6;
}
.side-toc a:hover{color:var(--primary);text-decoration:none;border-left-color:var(--primary-line)}
.side-toc a.is-current{color:var(--primary);border-left-color:var(--primary);font-weight:600}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{display:block;padding:12px 0;font-size:14.5px;color:var(--text);line-height:1.6}
.side-list a:hover{color:var(--primary);text-decoration:none}
.side-list span{display:block;font-size:13px;color:var(--text-3);margin-top:4px}

/* ============ RELATED / CTA ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--bg-alt);border:1px solid var(--line);color:var(--text-2);font-size:13px;
}
.tag:hover{border-color:var(--primary-line);color:var(--primary);text-decoration:none}
.strip{
  margin-top:40px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--bg-alt);padding:24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.strip p{font-size:15.5px;color:var(--text-2);margin:0}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);
  overflow:hidden;display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--primary-line)}
.card:hover h3 a{color:var(--primary)}
.card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px}
.card-body h3 a{color:var(--text)}
.card-body p{font-size:14.5px;color:var(--text-2);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}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{font-size:28px}
.section-head p{font-size:15px;color:var(--text-2);margin-top:8px;max-width:640px}

/* ============ EMPTY ============ */
.empty{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:32px;
}
.empty svg{width:48px;height:48px;color:rgba(29,95,224,.28)}
.empty strong{font-size:16px}
.empty span{font-size:13.5px;color:var(--text-2)}

/* ============ CTA BAND ============ */
.cta-band{background:var(--dark);color:#fff;padding:48px 0}
.cta-band .inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.cta-band h2{color:#fff;font-size:26px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:8px}

/* ============ FOOTER ============ */
.site-footer{background:var(--dark);color:#fff;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.fb-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:19px;font-weight:700}
.fb-logo:hover{color:#fff;text-decoration:none}
.fb-logo svg{width:26px;height:26px;color:#7FA8F5}
.footer-brand p{color:rgba(255,255,255,.72);font-size:14px;margin-top:14px;line-height:1.8;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer-col a:hover{color:#fff;transform:translateX(2px);text-decoration:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  color:rgba(255,255,255,.6);font-size:13px;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1279px){
  .layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
  .article-title{font-size:38px}
}
@media (max-width:1023px){
  .nav-left,.nav-right{display:none}
  .nav-wrap{grid-template-columns:1fr auto;height:64px}
  .brand{justify-self:start}
  .nav-toggle{display:flex;justify-self:end}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side-sticky{position:static;margin-top:40px}
  .section{padding:72px 0}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .article-title{font-size:30px}
  .section{padding:56px 0}
  .page-head{padding:28px 0 32px}
  .article-body{font-size:16px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .breadcrumb .current{max-width:200px}
  .strip{padding:20px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;padding-bottom:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .btn-lg{width:100%}
  .article-meta{gap:10px}
}

/* roulang page: category1 */
:root{
  --primary:#1D5FE0;
  --primary-hover:#1750C4;
  --primary-active:#1344A8;
  --primary-light:#EAF0FE;
  --primary-line:#C7D8F9;
  --accent:#E8862B;
  --accent-light:#FDF2E4;
  --ink:#131A24;
  --ink-2:#5B6B7F;
  --ink-3:#93A1B3;
  --line:#E3E9F2;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --bg-soft:#EEF3FB;
  --dark:#0F1B2D;
  --success:#1FA971;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --sh1:0 1px 2px rgba(19,26,36,.04);
  --sh2:0 8px 24px -12px rgba(19,26,36,.12);
  --sh3:0 18px 48px -20px rgba(19,26,36,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--primary-hover);text-decoration:underline}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
h1{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.02em}
h2{font-size:32px;line-height:1.3;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:72px;
  gap:16px;
}
.nav-left{display:flex;align-items:center;gap:6px;justify-content:flex-start}
.nav-right{display:flex;align-items:center;gap:6px;justify-content:flex-end}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 12px;
  font-size:15px;color:var(--ink);border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);text-decoration:none;background:var(--primary-light)}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--ink);text-decoration:none}
.brand svg{width:28px;height:28px;color:var(--primary);flex:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:all .18s var(--ease);white-space:nowrap;
  min-height:44px;padding:0 24px;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh1)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;text-decoration:none;box-shadow:var(--sh2);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:scale(.99)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary-line)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-hover);text-decoration:none}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
}
.text-link svg{width:16px;height:16px;transition:transform .18s var(--ease)}
.text-link:hover{text-decoration:none;color:var(--primary-hover)}
.text-link:hover svg{transform:translateX(2px)}

.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;position:relative;cursor:pointer;
}
.nav-toggle span{
  position:absolute;left:10px;right:10px;height:2px;background:var(--ink);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:25px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-4.5px) rotate(-45deg)}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:8px 0 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel a.m-link{
  display:flex;align-items:center;
  min-height:48px;padding:0 24px;
  font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.m-link:hover{background:var(--bg-alt);text-decoration:none}
.mobile-panel a.m-link.is-active{color:var(--primary);font-weight:600}
.mobile-panel .m-cta{padding:16px 24px 0}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--line)}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:14px 0;font-size:13.5px;color:var(--ink-3);
}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--ink-3)}
.crumb .current{color:var(--ink-3)}

/* ============ Hero 横幅 ============ */
.cat-hero{
  position:relative;
  padding:56px 0 52px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;background:rgba(244,247,252,.9);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary-light);color:var(--primary);
  border:1px solid var(--primary-line);
  border-radius:999px;padding:5px 14px;font-size:13px;font-weight:600;
  margin-bottom:18px;
}
.cat-hero h1{max-width:820px}
.cat-hero .lede{
  margin-top:18px;max-width:780px;
  font-size:17px;line-height:1.9;color:var(--ink-2);
}
.cat-hero .hero-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.hero-facts{
  margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;
}
.hero-facts span{
  display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;font-size:13.5px;color:var(--ink-2);box-shadow:var(--sh1);
}
.hero-facts svg{width:16px;height:16px;color:var(--accent)}

/* ============ 通用板块 ============ */
.section{padding:80px 0}
.section.alt{background:var(--bg-alt)}
.section.soft{background:var(--bg-soft)}
.section-head{margin-bottom:36px;max-width:760px}
.section-head .tag{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-light);
  border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--ink-2);font-size:16px}

/* ============ 双列图文卡 ============ */
.card-grid-2{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;
}
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--sh1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  display:flex;flex-direction:column;
}
.media-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--primary-line)}
.media-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.media-card .thumb .badge{
  position:absolute;left:14px;top:14px;
  background:rgba(15,27,45,.82);color:#fff;
  font-size:12.5px;font-weight:600;border-radius:999px;padding:4px 12px;
}
.media-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.media-card h3 a{color:var(--ink)}
.media-card:hover h3 a{color:var(--primary)}
.media-card .body p{
  color:var(--ink-2);font-size:15px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.media-card .foot{margin-top:auto;padding-top:6px}

/* ============ 要点清单 ============ */
.check-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--sh1);padding:8px 0;overflow:hidden;
}
.check-item{
  display:flex;gap:18px;padding:22px 28px;
  border-bottom:1px solid var(--line);
}
.check-item:last-child{border-bottom:0}
.check-num{
  flex:none;width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-light);color:var(--accent);
  font-size:14.5px;font-weight:700;
}
.check-item h3{font-size:18px;margin-bottom:6px}
.check-item p{color:var(--ink-2);font-size:15px}

/* ============ FAQ ============ */
.faq-list{max-width:880px;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--sh1);overflow:hidden;transition:border-color .18s var(--ease);
}
.faq-item[open]{border-color:var(--primary-line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary);
  font-size:17px;font-weight:700;line-height:1;
}
.faq-item[open] summary .plus{background:var(--primary);color:#fff}
.faq-body{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.faq-body p+p{margin-top:10px}

/* ============ CTA 条 ============ */
.cta-band{background:var(--dark);padding:56px 0}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:26px;max-width:640px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;margin-top:8px;max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-primary{background:var(--primary)}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:36px;
}
.fb-logo{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;font-size:19px;font-weight:700;margin-bottom:14px;
}
.fb-logo:hover{color:#fff;text-decoration:none}
.fb-logo svg{width:26px;height:26px;color:var(--primary)}
.footer-brand p{font-size:14px;line-height:1.85;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:transform .18s var(--ease),color .18s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:none;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  h1{font-size:38px}
  h2{font-size:28px}
  .container{padding:0 20px}
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:1fr auto;height:64px}
  .brand{justify-self:start}
  .nav-toggle{display:block;justify-self:end}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-list{max-width:100%}
}
@media (max-width:767px){
  body{font-size:15.5px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .container{padding:0 16px}
  .cat-hero{padding:40px 0 38px}
  .cat-hero .lede{font-size:16px}
  .section{padding:56px 0}
  .card-grid-2{grid-template-columns:1fr;gap:18px}
  .check-item{padding:18px 20px;gap:14px}
  .faq-item summary{padding:18px 18px;font-size:16px}
  .faq-body{padding:0 18px 18px;font-size:15px}
  .cta-inner h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category2 */
:root{
  --brand:#1D5FE0;
  --brand-hover:#1750C4;
  --brand-active:#1344A8;
  --brand-soft:#EAF0FE;
  --brand-line:#C7D8F9;
  --accent:#E8862B;
  --accent-soft:#FDF2E4;
  --ink:#131A24;
  --ink-2:#5B6B7F;
  --ink-3:#93A1B3;
  --line:#E3E9F2;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --bg-soft:#EEF3FB;
  --dark:#0F1B2D;
  --success:#1FA971;
  --radius-card:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --radius-img:12px;
  --sh1:0 1px 2px rgba(19,26,36,.04);
  --sh2:0 8px 24px -12px rgba(19,26,36,.12);
  --sh3:0 18px 48px -20px rgba(19,26,36,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;}
a:hover{text-decoration:underline;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:32px;font-weight:700;line-height:1.3;margin-bottom:12px;}
.section-head p{margin:0;color:var(--ink-2);font-size:16px;line-height:1.8;}
.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:999px;
  height:28px;padding:0 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.header-inner{
  height:72px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
}
.nav-left{display:flex;align-items:center;gap:24px;}
.nav-right{display:flex;align-items:center;gap:20px;justify-content:flex-end;}
.brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:20px;font-weight:700;color:var(--ink);
  white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand svg{width:28px;height:28px;color:var(--brand);flex:none;}
.nav-link{
  position:relative;
  font-size:15px;color:var(--ink);
  padding:8px 2px;line-height:1.4;
  transition:color .18s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;
  height:2px;width:0;background:var(--brand);
  transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--brand);text-decoration:none;}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:10px;
  align-items:center;justify-content:center;cursor:pointer;
  flex-direction:column;gap:5px;padding:0;
}
.nav-toggle span{
  display:block;width:22px;height:2px;background:var(--ink);
  border-radius:2px;transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.site-header.menu-open .nav-toggle span:first-child{transform:translateY(3.5px) rotate(45deg);}
.site-header.menu-open .nav-toggle span:last-child{transform:translateY(-3.5px) rotate(-45deg);}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;}
.site-header.menu-open .mobile-panel{display:block;}
.mobile-panel nav{display:flex;flex-direction:column;padding:8px 0 20px;}
.mobile-panel a{
  display:flex;align-items:center;min-height:48px;
  padding:0 2px;font-size:16px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-panel a:hover{text-decoration:none;color:var(--brand);}
.mobile-panel a.is-active{color:var(--brand);font-weight:600;}
.mobile-cta{
  margin-top:18px;border-bottom:0 !important;
  justify-content:center;width:100%;color:#fff !important;
}
.mobile-cta:hover{color:#fff !important;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
  padding:0 24px;height:48px;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;box-shadow:var(--sh2);transform:translateY(-1px);}
.btn-primary:active{background:var(--brand-active);transform:scale(.99);}
.btn-secondary{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-secondary:hover{background:var(--brand-soft);color:var(--brand);}
.btn-secondary:active{background:var(--brand-soft);transform:scale(.99);}
.btn-sm{height:40px;padding:0 20px;font-size:14.5px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
  height:auto;padding:0;background:none;border:0;
}
.btn-link svg{width:16px;height:16px;transition:transform .18s var(--ease);}
.btn-link:hover{color:var(--brand-hover);text-decoration:none;}
.btn-link:hover svg{transform:translateX(2px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--brand-soft);color:var(--brand);}
.badge-accent{background:var(--accent-soft);color:var(--accent);}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-2);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--ink-2);margin-bottom:18px;
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);text-decoration:none;}
.breadcrumb .sep{color:var(--ink-3);}
.breadcrumb .current{color:var(--ink-3);}

/* ---------- 页头 Banner ---------- */
.page-hero{
  position:relative;
  padding:64px 0 56px;
  background-image:linear-gradient(rgba(244,247,252,.90),rgba(244,247,252,.95)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero h1{
  font-size:44px;font-weight:700;line-height:1.25;
  letter-spacing:-.02em;margin-bottom:16px;
}
.page-hero .hero-sub{
  font-size:18px;color:var(--ink-2);line-height:1.85;
  max-width:760px;margin:0;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}

/* ---------- 指南布局 ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.guide-toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--sh1);
}
.toc-title{
  font-size:13.5px;font-weight:700;color:var(--ink-3);
  letter-spacing:.06em;margin-bottom:12px;
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:9px 12px;
  font-size:14.5px;color:var(--ink-2);
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.toc-list a:hover{color:var(--brand);background:var(--brand-soft);text-decoration:none;}
.toc-list a.is-current{
  color:var(--brand);font-weight:600;
  border-left-color:var(--brand);background:var(--brand-soft);
}

.guide-body{min-width:0;}
.prose-block:not(:first-child){
  border-top:1px solid var(--line);
  margin-top:40px;padding-top:40px;
}
.guide-body h2{
  font-size:28px;font-weight:700;line-height:1.35;
  margin-bottom:16px;letter-spacing:-.01em;
}
.guide-body h3{font-size:20px;font-weight:600;line-height:1.4;margin:28px 0 12px;}
.guide-body p{margin:0 0 16px;font-size:17px;line-height:1.9;color:var(--ink);}
.guide-body p.muted{font-size:15px;color:var(--ink-2);line-height:1.85;}
.check-list{list-style:none;display:flex;flex-direction:column;gap:12px;margin:0 0 20px;}
.check-list li{
  position:relative;padding-left:28px;
  font-size:16px;line-height:1.8;color:var(--ink-2);
}
.check-list li::before{
  content:"";position:absolute;left:6px;top:11px;
  width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.num-list{list-style:none;display:flex;flex-direction:column;gap:14px;margin:0 0 20px;}
.num-list li{
  display:grid;grid-template-columns:28px 1fr;gap:12px;
  font-size:16px;line-height:1.8;color:var(--ink-2);
}
.num-list .num{
  display:flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);
  font-size:13.5px;font-weight:700;flex:none;
}
.tip{
  display:flex;gap:12px;
  background:var(--accent-soft);
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  padding:16px 20px;margin:24px 0;
}
.tip svg{width:20px;height:20px;color:var(--accent);flex:none;margin-top:4px;}
.tip p{margin:0;font-size:15px;line-height:1.85;color:var(--ink);}
.figure{margin:24px 0;}
.figure img{
  width:100%;border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.figure figcaption{
  margin-top:10px;font-size:13.5px;color:var(--ink-3);
  text-align:center;line-height:1.7;
}

/* ---------- 步骤时间线 ---------- */
.steps{list-style:none;margin:26px 0 8px;position:relative;}
.steps li{position:relative;padding-left:56px;padding-bottom:24px;}
.steps li:last-child{padding-bottom:0;}
.steps li:not(:last-child)::before{
  content:"";position:absolute;left:17px;top:40px;bottom:0;
  width:2px;background:var(--line);
}
.step-dot{
  position:absolute;left:0;top:0;
  width:36px;height:36px;border-radius:50%;
  background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 4px var(--brand-soft);
}
.step-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--sh1);
  transition:box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.step-card:hover{box-shadow:var(--sh2);border-color:var(--brand-line);transform:translateY(-2px);}
.step-card h3{margin:0 0 8px;font-size:18px;font-weight:600;}
.step-card p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ---------- 适用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.scene-card{
  display:grid;grid-template-columns:168px minmax(0,1fr);gap:20px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--sh1);align-items:center;
  transition:box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.scene-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--brand-line);}
.scene-card img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-img);
}
.scene-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.scene-card p{margin:0 0 10px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- 数据带 ---------- */
.stat-band{
  background:var(--dark);
  border-radius:var(--radius-lg);
  padding:40px;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.stat-item{padding-right:24px;}
.stat-item:not(:last-child){border-right:1px solid rgba(255,255,255,.12);}
.stat-num{
  font-size:44px;font-weight:700;line-height:1.1;
  color:var(--accent);font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:6px;
}
.stat-num small{font-size:16px;font-weight:600;color:rgba(255,255,255,.72);}
.stat-label{margin-top:10px;font-size:15px;font-weight:600;color:#fff;}
.stat-note{margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.6;}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item:hover{border-color:var(--brand-line);}
.faq-item.is-open{box-shadow:var(--sh2);border-color:var(--brand-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 24px;background:none;border:0;
  font-size:17px;font-weight:600;color:var(--ink);
  text-align:left;cursor:pointer;line-height:1.6;
}
.faq-icon{position:relative;width:22px;height:22px;flex:none;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease);}
.faq-item.is-open .faq-a{max-height:360px;}
.faq-a-inner{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--dark);border-radius:var(--radius-lg);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:24px;font-weight:700;line-height:1.4;margin-bottom:8px;}
.cta-band p{margin:0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:96px;}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:32px;padding:56px 0 40px;
}
.fb-logo{
  display:inline-flex;align-items:center;gap:8px;
  color:#fff;font-size:20px;font-weight:700;margin-bottom:12px;
}
.fb-logo:hover{color:#fff;text-decoration:none;}
.fb-logo svg{width:28px;height:28px;color:var(--brand-line);flex:none;}
.footer-brand p{margin:0;font-size:14px;line-height:1.85;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  display:inline-block;color:rgba(255,255,255,.72);
  font-size:14px;transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);text-decoration:none;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.7;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .guide-layout{grid-template-columns:220px minmax(0,1fr);gap:32px;}
}
@media (max-width:1023px){
  .container{padding:0 20px;}
  .section{padding:72px 0;}
  .page-hero{padding:48px 0 44px;}
  .page-hero h1{font-size:38px;}
  .section-head h2{font-size:28px;}
  .nav-left,.nav-right{display:none;}
  .header-inner{grid-template-columns:1fr auto;height:68px;}
  .nav-toggle{display:flex;justify-self:end;}
  .brand{justify-self:start;}
  .guide-layout{grid-template-columns:1fr;gap:24px;}
  .guide-toc{position:static;padding:12px;}
  .toc-title{padding-left:4px;margin-bottom:10px;}
  .toc-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;}
  .toc-list a{
    white-space:nowrap;border:1px solid var(--line);
    border-radius:999px;padding:8px 14px;border-left:1px solid var(--line);
  }
  .toc-list a.is-current{border-color:var(--brand);background:var(--brand-soft);}
  .guide-body h2{font-size:24px;}
  .scene-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;gap:20px;padding:32px 28px;}
  .stat-item{padding-right:0;}
  .stat-item:not(:last-child){border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
  .footer-brand{grid-column:1 / -1;}
  .site-footer{margin-top:72px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .page-hero{padding:40px 0 36px;}
  .page-hero h1{font-size:30px;}
  .page-hero .hero-sub{font-size:16px;}
  .section-head h2{font-size:24px;}
  .section-head{margin-bottom:24px;}
  .guide-body p{font-size:16px;}
  .guide-body h2{font-size:22px;}
  .scene-card{grid-template-columns:1fr;}
  .scene-card img{aspect-ratio:16/9;}
  .cta-band{padding:28px 24px;}
  .cta-band h2{font-size:20px;}
  .cta-band .btn{width:100%;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a-inner{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .stat-num{font-size:36px;}
  .steps li{padding-left:48px;}
  .step-dot{width:32px;height:32px;font-size:14px;}
  .steps li:not(:last-child)::before{left:15px;top:36px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category3 */
:root{
  --brand:#1D5FE0;
  --brand-hover:#1750C4;
  --brand-press:#1344A8;
  --brand-soft:#EAF0FE;
  --brand-line:#C7D8F9;
  --amber:#E8862B;
  --amber-soft:#FDF2E4;
  --amber-light:#F4B268;
  --ink:#131A24;
  --ink-2:#5B6B7F;
  --ink-3:#93A1B3;
  --line:#E3E9F2;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FC;
  --bg-soft:#EEF3FB;
  --dark:#0F1B2D;
  --success:#1FA971;
  --warning:#E08700;
  --danger:#D64545;
  --r-card:14px;
  --r-card-lg:18px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(19,26,36,.04);
  --sh2:0 8px 24px -12px rgba(19,26,36,.12);
  --sh3:0 18px 48px -20px rgba(19,26,36,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em}
h1{font-size:44px;font-weight:700;line-height:1.25;letter-spacing:-0.02em}
h2{font-size:32px;font-weight:700;line-height:1.3}
h3{font-size:22px;font-weight:600;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--ink-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--amber-soft);color:#A85D12;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;margin-bottom:16px;
}
.eyebrow svg{width:15px;height:15px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(10px);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh2)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;height:72px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px}
.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  font-size:15px;color:var(--ink);padding:9px 12px;border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--brand);text-decoration:none}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.logo{
  justify-self:center;display:inline-flex;align-items:center;gap:9px;
  font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;
}
.logo:hover{color:var(--brand);text-decoration:none}
.logo svg{width:28px;height:28px;color:var(--brand);flex:none}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;justify-self:end;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s var(--ease),opacity .18s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-panel.is-open{display:block}
.mobile-panel .mp-inner{padding:8px 0 24px}
.mp-link{
  display:flex;align-items:center;min-height:48px;padding:0 4px;
  border-bottom:1px solid var(--line);color:var(--ink);font-size:15.5px;
}
.mp-link.is-active{color:var(--brand);font-weight:600}
.mp-link:hover{text-decoration:none;color:var(--brand)}
.mp-cta{padding:18px 0 4px}
.mp-cta .btn{width:100%}
body.no-scroll{overflow:hidden}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;border-radius:var(--r-btn);border:1px solid transparent;
  text-decoration:none;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:15px}
.btn-lg{height:48px;padding:0 24px;font-size:16px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-hover);color:#fff;text-decoration:none;box-shadow:var(--sh2);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-press);transform:scale(.99)}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);text-decoration:none;color:var(--brand)}
.btn-ghost:active{background:var(--brand-line)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;
  font-size:15px;text-decoration:none;
}
.btn-text svg{width:16px;height:16px;transition:transform .18s var(--ease)}
.btn-text:hover{text-decoration:none;color:var(--brand-press)}
.btn-text:hover svg{transform:translateX(2px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none!important}

/* ============ 面包屑 ============ */
.breadcrumb{font-size:13.5px;color:var(--ink-3);padding-top:20px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:">";color:var(--ink-3)}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand);text-decoration:none}
.breadcrumb .current{color:var(--ink-3)}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  background-image:linear-gradient(rgba(244,247,252,.93),rgba(244,247,252,.86)),url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding-bottom:56px;
}
.page-head-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  padding-top:32px;
}
.page-head h1{margin-bottom:18px}
.page-head .lead{font-size:17px;color:var(--ink-2);max-width:34em;line-height:1.85}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:28px}
.head-figure{
  border-radius:var(--r-card-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh3);background:#fff;
}
.head-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card-lg)}

/* ============ 筛选行 ============ */
.filter-section{padding:32px 0 0;background:#fff}
.filter-bar{display:flex;flex-wrap:wrap;gap:12px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  color:var(--ink-2);font-size:14.5px;transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--brand-line);color:var(--brand)}
.chip.is-active{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand);font-weight:600}
.chip svg{width:16px;height:16px}

/* ============ 卡片矩阵 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;gap:12px;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh1);
  transition:box-shadow .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{box-shadow:var(--sh2);border-color:var(--brand-line);transform:translateY(-2px)}
.card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;flex:none;
}
.card-icon svg{width:24px;height:24px}
.card h3{font-size:18px;font-weight:600;line-height:1.45}
.card p{
  color:var(--ink-2);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card .link-arrow{margin-top:auto;padding-top:6px}

/* ============ 数据高亮条 ============ */
.stats-band{
  background:var(--dark);border-radius:var(--r-card-lg);
  padding:44px 40px 36px;color:#fff;
}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.stat{border-left:2px solid rgba(255,255,255,.14);padding-left:24px}
.stat:first-child{border-left:0;padding-left:0}
.stat .num{
  display:flex;align-items:baseline;gap:8px;
  font-size:44px;font-weight:700;line-height:1.1;color:var(--amber-light);
  font-variant-numeric:tabular-nums;
}
.stat .num small{font-size:16px;font-weight:600;color:rgba(255,255,255,.8)}
.stat .desc{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.78);line-height:1.7}
.stats-note{
  margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(255,255,255,.55);line-height:1.7;
}

/* ============ 三步核对 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh1);
}
.step-num{
  width:38px;height:38px;border-radius:var(--r-pill);background:var(--brand-soft);
  color:var(--brand);font-weight:700;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{color:var(--ink-2);font-size:15px;line-height:1.8}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh1);overflow:hidden;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq-item:hover{border-color:var(--brand-line);box-shadow:var(--sh2)}
.faq-item summary{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";color:var(--brand);font-size:20px;font-weight:700;line-height:1;flex:none;
}
.faq-item[open] summary::after{content:"−"}
.faq-item[open] summary{color:var(--brand)}
.faq-body{padding:0 24px 20px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.faq-note{margin-top:20px;font-size:13.5px;color:var(--ink-3)}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--dark);border-radius:var(--r-card-lg);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.75);font-size:15.5px;max-width:46em}
.cta-band .btn-primary{background:var(--brand)}
.cta-band .btn-primary:hover{background:#3A79F0}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#fff;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 40px;
}
.fb-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:700}
.fb-logo:hover{color:#fff;text-decoration:none}
.fb-logo svg{width:26px;height:26px;color:#7FA8F5;flex:none}
.footer-brand p{margin-top:14px;color:rgba(255,255,255,.72);font-size:14px;line-height:1.85;max-width:32em}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col li+li{margin-top:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;transition:color .18s var(--ease),padding .18s var(--ease)}
.footer-col a:hover{color:#fff;padding-left:2px;text-decoration:none}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 32px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);line-height:1.7;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 24px}
}
@media (max-width:1023px){
  :root{--sp-section:72px}
  .container{padding:0 20px}
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:1fr auto;height:68px}
  .logo{justify-self:start;font-size:19px}
  .nav-toggle{display:flex}
  h1{font-size:38px}
  h2{font-size:28px}
  .page-head-inner{grid-template-columns:1fr;gap:32px;padding-top:24px}
  .page-head .head-figure{order:2}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:1fr;gap:28px}
  .stat{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px}
  .stat:first-child{border-top:0;padding-top:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;padding:56px 0 36px}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  .container{padding:0 16px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:18px}
  .page-head{padding-bottom:40px}
  .page-head .lead{font-size:16px;line-height:1.85}
  .head-actions{gap:12px}
  .head-actions .btn{width:100%}
  .head-actions .btn-text{width:100%;justify-content:flex-start}
  .filter-section{padding:24px 0 0}
  .chip{height:36px;padding:0 14px;font-size:14px}
  .grid-3{grid-template-columns:1fr}
  .card{padding:20px}
  .stats-band{padding:32px 24px 26px}
  .stat .num{font-size:36px}
  .steps{grid-template-columns:1fr}
  .step{padding:24px 20px}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .faq-item summary{padding:18px 20px;font-size:16px}
  .faq-body{padding:0 20px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  h1{font-size:27px}
  .eyebrow{font-size:12px}
  .btn-lg{height:46px;font-size:15.5px}
}