/* roulang page: index */
:root{
  --brand:#1560D6;
  --brand-dark:#0E3E8F;
  --brand-soft:#E8F0FE;
  --accent:#FF7A2F;
  --accent-dark:#E8681C;
  --teal:#12B39A;
  --bg:#F5F8FC;
  --line:#E3EAF4;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 24px -14px rgba(21,96,214,.22);
  --shadow-2:0 8px 18px -12px rgba(15,23,42,.18),0 22px 44px -20px rgba(21,96,214,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-tight{padding:44px 0}
@media(min-width:1024px){.section-tight{padding:64px 0}}
.h1{font-size:28px;line-height:36px;font-weight:700}
@media(min-width:1024px){.h1{font-size:40px;line-height:48px}}
.h2{font-size:24px;line-height:32px;font-weight:700}
@media(min-width:1024px){.h2{font-size:30px;line-height:40px}}
.h3{font-size:20px;line-height:28px;font-weight:600}
.sub{font-size:15px;line-height:26px;color:var(--ink-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-dark);background:var(--brand-soft);border-radius:6px;padding:6px 12px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D6E2F5}
.card-pad{padding:22px}
@media(min-width:1024px){.card-pad{padding:28px}}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;font-weight:600;padding:6px 10px;border-radius:6px;background:var(--brand-soft);color:var(--brand-dark)}
.badge-accent{background:rgba(255,122,47,.13);color:#B84D0C}
.badge-teal{background:rgba(18,179,154,.13);color:#0A7F6E}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 22px;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;white-space:nowrap}
.btn:active{transform:translateY(0) scale(.99)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px)}
.btn-quiet{background:#fff;border-color:var(--line);color:var(--ink-2)}
.btn-quiet:hover{color:var(--brand);border-color:var(--brand)}
.btn-pill{border-radius:999px}
.btn-block{width:100%}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-dark);transition:color .18s ease}
.arrow-link .ar{transition:transform .18s ease}
.arrow-link:hover{color:var(--brand)}
.arrow-link:hover .ar{transform:translateX(3px)}
/* header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .18s ease}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;box-shadow:0 6px 14px -8px rgba(21,96,214,.8)}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:0}
.brand-text small{display:block;font-size:11px;font-weight:500;color:var(--ink-3);line-height:1.2;letter-spacing:.4px}
.nav-menu{display:none;align-items:center;gap:6px}
@media(min-width:1024px){.nav-menu{display:flex}}
.nav-link{font-size:15px;color:var(--ink-2);padding:8px 14px;border-radius:999px;transition:color .16s ease,background-color .16s ease}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand-dark);background:var(--brand-soft);font-weight:600}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}
.burger{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .18s ease,box-shadow .18s ease}
.burger:hover{border-color:var(--brand);box-shadow:var(--shadow-1)}
@media(min-width:1024px){.burger{display:none}}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer{position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;border-left:1px solid var(--line);box-shadow:-20px 0 50px -30px rgba(15,23,42,.4);transform:translateX(102%);transition:transform .26s ease;z-index:80;padding:22px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-2);font-size:18px;line-height:1}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-link{display:block;padding:12px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px dashed var(--line);transition:color .16s ease}
.drawer-link:hover{color:var(--brand)}
.drawer-link.is-active{color:var(--brand-dark);font-weight:600}
.overlay{position:fixed;inset:0;background:rgba(15,23,42,.42);opacity:0;pointer-events:none;transition:opacity .26s ease;z-index:70}
.overlay.is-open{opacity:1;pointer-events:auto}
/* hero */
.hero{position:relative;overflow:hidden;padding:48px 0 56px;background:var(--bg)}
@media(min-width:1024px){.hero{padding:76px 0 88px}}
.hero-bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.10;pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 84% 14%,rgba(21,96,214,.07),transparent 56%),radial-gradient(circle at 6% 86%,rgba(255,122,47,.06),transparent 50%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;gap:36px;grid-template-columns:1fr;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:44px}}
.hero-title{margin:18px 0 14px}
.hero-sub{font-size:16px;line-height:28px;color:var(--ink-2);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;padding-top:22px;border-top:1px dashed var(--line)}
.hero-point{font-size:13px;color:var(--ink-2);display:flex;align-items:center;gap:7px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);flex-shrink:0}
.dot-accent{background:var(--accent)}
.preview-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-2);padding:24px}
@media(min-width:1024px){.preview-card{padding:28px}}
.preview-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0 22px}
.preview-stat{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 10px;text-align:center}
.preview-stat b{display:block;font-size:20px;font-weight:700;color:var(--brand-dark);font-variant-numeric:tabular-nums;line-height:1.3}
.preview-stat span{font-size:12px;color:var(--ink-3)}
.mini-bars{display:flex;align-items:flex-end;gap:8px;height:96px;padding-top:8px}
.mini-bars i{flex:1;border-radius:6px 6px 3px 3px;background:var(--brand-soft);display:block;transition:background-color .2s ease}
.mini-bars i.on{background:var(--brand)}
.mini-bars i.hot{background:var(--accent)}
.bars-legend{display:flex;gap:16px;font-size:12px;color:var(--ink-3);margin-top:12px}
.bars-legend span{display:flex;align-items:center;gap:6px}
.lg{width:10px;height:10px;border-radius:3px;display:inline-block}
/* kpi */
.kpi-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.kpi-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.kpi-grid{grid-template-columns:repeat(4,1fr)}}
.kpi-num{font-size:34px;line-height:1.1;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:0}
.kpi-num em{font-size:15px;font-style:normal;font-weight:600;color:var(--ink-2);margin-left:4px}
.kpi-label{font-size:14px;color:var(--ink-2);margin-top:10px}
.trend{font-size:12px;font-weight:600;padding:4px 8px;border-radius:6px;background:rgba(18,179,154,.13);color:#0A7F6E;font-variant-numeric:tabular-nums}
.trend.down{background:rgba(255,122,47,.13);color:#B84D0C}
/* bento */
.bento{display:grid;gap:24px;grid-template-columns:repeat(12,1fr)}
.bento-7{grid-column:span 7}
.bento-5{grid-column:span 5}
.bento-3{grid-column:span 3}
@media(max-width:1023px){
  .bento{grid-template-columns:repeat(2,1fr);gap:20px}
  .bento-7,.bento-5{grid-column:span 2}
  .bento-3{grid-column:span 1}
}
@media(max-width:639px){
  .bento{grid-template-columns:1fr;gap:16px}
  .bento-7,.bento-5,.bento-3{grid-column:span 1}
}
.bento-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:24px;display:flex;flex-direction:column;transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.bento-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D6E2F5}
.bento-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:16px}
.bento-icon.alt{background:rgba(255,122,47,.12);color:#B84D0C}
.bento-card p{font-size:14px;line-height:24px;color:var(--ink-2);margin:10px 0 18px}
.bento-media{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);margin-top:auto}
.bento-media img{width:100%;height:150px;object-fit:cover}
.mt-bento{margin-top:0}
@media(min-width:1024px){.mt-bento{margin-top:32px}}
/* steps */
.steps{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step-num{width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}
/* compare */
.compare{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:1024px){.compare{grid-template-columns:1fr 1fr}}
.compare-col{border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-1);padding:24px}
.compare-col.is-new{border-color:rgba(21,96,214,.35);box-shadow:var(--shadow-2)}
.compare-col h3{font-size:18px;font-weight:600;margin:0 0 6px}
.compare-list{list-style:none;margin:16px 0 0;padding:0}
.compare-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:24px;color:var(--ink-2);padding:10px 0;border-bottom:1px dashed var(--line)}
.compare-list li:last-child{border-bottom:0}
.mark{width:20px;height:20px;border-radius:6px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:#EEF2F7;color:var(--ink-3);margin-top:2px}
.mark.on{background:var(--brand-soft);color:var(--brand-dark)}
.mark.hot{background:rgba(255,122,47,.14);color:#B84D0C}
.hl{color:var(--brand-dark);font-weight:600}
.hl-accent{color:#B84D0C;font-weight:600}
/* cms */
.cms-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.cms-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.cms-grid{grid-template-columns:repeat(3,1fr)}}
.cms-card{display:flex;flex-direction:column;height:100%}
.cms-card .cms-title{font-size:17px;line-height:26px;font-weight:600;margin:0 0 10px}
.cms-card .cms-title a:hover{color:var(--brand)}
.cms-time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card .cms-sum{font-size:14px;line-height:24px;color:var(--ink-2);margin:0 0 18px}
.cms-card .arrow-link{margin-top:auto}
.cms-empty{border:1px dashed var(--line);border-radius:var(--radius);background:#fff;padding:48px 24px;text-align:center}
.cms-empty .ico{width:52px;height:52px;border-radius:16px;background:var(--brand-soft);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 16px}
/* voices */
.voice-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.voice-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.voice-grid{grid-template-columns:repeat(3,1fr)}}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand-dark);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.voice-name{font-size:14px;font-weight:600}
.voice-role{font-size:12px;color:var(--ink-3)}
.voice-text{font-size:14px;line-height:26px;color:var(--ink-2);margin:0}
/* faq */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-1);margin-bottom:14px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item:hover{border-color:#D6E2F5}
.faq-item.is-open{border-color:rgba(21,96,214,.35);box-shadow:var(--shadow-2)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;background:transparent;border:0;text-align:left;padding:18px 20px;min-height:64px;cursor:pointer;color:var(--ink)}
.faq-num{width:28px;height:28px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;font-variant-numeric:tabular-nums}
.faq-item.is-open .faq-num{background:var(--brand);color:#fff}
.faq-title{flex:1;font-size:16px;font-weight:600;line-height:26px}
.faq-item.is-open .faq-title{color:var(--brand-dark)}
.faq-icon{width:24px;height:24px;flex-shrink:0;position:relative;transition:transform .22s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink-3);border-radius:2px;transition:background-color .2s ease}
.faq-icon::before{left:5px;top:11px;width:14px;height:2px}
.faq-icon::after{left:11px;top:5px;width:2px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--brand)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .28s ease,opacity .28s ease}
.faq-item.is-open .faq-a{opacity:1}
.faq-a-inner{padding:0 20px 20px 62px;font-size:15px;line-height:28px;color:var(--ink-2)}
/* form */
.form-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.form-grid{grid-template-columns:1.1fr .9fr;gap:40px}}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.req{color:var(--accent)}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;padding:12px 14px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease;outline:none}
.field input,.field select{height:48px}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(21,96,214,.18)}
.field .hint{font-size:12px;color:var(--ink-3);margin-top:6px}
.info-list{list-style:none;margin:0;padding:0}
.info-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:24px;color:var(--ink-2)}
.info-list li:last-child{border-bottom:0}
.info-list .mk{width:26px;height:26px;border-radius:8px;background:var(--brand-soft);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;margin-top:2px}
/* footer */
.site-footer{background:var(--ink);color:#fff;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-mark{width:36px;height:36px;border-radius:11px;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;color:#fff}
.footer-title{font-size:16px;font-weight:700}
.site-footer h4{font-size:14px;font-weight:700;margin:0 0 16px;color:#fff}
.site-footer p{font-size:13px;line-height:24px;color:rgba(255,255,255,.7);margin:0}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:13px;color:rgba(255,255,255,.7);transition:color .16s ease}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* roulang page: article */
:root{
    --brand:#1560D6;
    --brand-dark:#0E3E8F;
    --brand-soft:#E8F0FE;
    --accent:#FF7A2F;
    --accent-dark:#E4661D;
    --teal:#12B39A;
    --bg:#F5F8FC;
    --line:#E3EAF4;
    --ink:#0F172A;
    --ink-2:#475569;
    --ink-3:#94A3B8;
    --radius:16px;
    --radius-sm:12px;
    --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 24px -14px rgba(21,96,214,.22);
    --shadow-2:0 8px 18px -12px rgba(15,23,42,.18),0 22px 44px -20px rgba(21,96,214,.28);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  html body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    letter-spacing:0;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer}
  ul,ol{padding-left:22px}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums}

  body .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){body .container{padding:0 32px}}

  /* ---------- Header / Nav ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
  .site-header.is-scrolled{box-shadow:var(--shadow-1)}
  .header-inner{display:flex;align-items:center;gap:20px;min-height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;flex-shrink:0}
  .brand-name{font-weight:700;font-size:17px;color:var(--ink);white-space:nowrap}
  .nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-link{padding:8px 13px;border-radius:999px;font-size:15px;color:var(--ink-2);transition:color .16s ease,background .16s ease;white-space:nowrap}
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link.is-active{color:var(--brand-dark);background:var(--brand-soft);font-weight:600}
  .header-actions{display:flex;align-items:center;gap:10px}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border-radius:10px;font-size:15px;font-weight:600;line-height:1.4;border:1px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
  .btn-pill{border-radius:999px}
  .btn-block{width:100%}
  .arrow-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px}
  .arrow-link i{transition:transform .18s ease}
  .arrow-link:hover i{transform:translateX(3px)}

  .menu-toggle{display:none;width:44px;height:44px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--ink);place-items:center}
  .menu-toggle:hover{border-color:var(--brand);color:var(--brand)}

  .drawer-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:80}
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .drawer{position:fixed;top:0;right:0;bottom:0;width:min(330px,86vw);background:#fff;z-index:90;padding:22px;display:flex;flex-direction:column;gap:4px;transform:translateX(102%);transition:transform .26s ease;box-shadow:-14px 0 40px -24px rgba(15,23,42,.5);overflow-y:auto}
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:8px}
  .drawer-title{font-weight:700;font-size:16px}
  .drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-2);display:grid;place-items:center}
  .drawer-close:hover{border-color:var(--brand);color:var(--brand)}
  .drawer-link{padding:15px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-2);display:flex;align-items:center;justify-content:space-between}
  .drawer-link:hover,.drawer-link.is-active{color:var(--brand)}
  .drawer-cta{margin-top:18px}

  @media (max-width:1023px){
    .nav-menu{display:none}
    .header-actions .btn-pill{display:none}
    .menu-toggle{display:grid}
  }

  /* ---------- Article layout ---------- */
  .article-main{padding:0 0 24px}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);padding:24px 0 8px}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:var(--ink-3)}
  .breadcrumb .crumb-current{color:var(--ink-3);max-width:390px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  .article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:28px 22px}
  @media (min-width:768px){.article-card{padding:48px 56px}}

  .article-head{max-width:800px;margin:0 auto 30px;padding-bottom:22px;border-bottom:1px dashed var(--line)}
  .badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;background:var(--brand-soft);color:var(--brand-dark);font-size:12px;font-weight:600;line-height:1.6}
  .badge-accent{background:rgba(255,122,47,.12);color:var(--accent-dark)}
  .article-head h1{font-size:27px;line-height:1.36;font-weight:700;margin:14px 0 16px}
  @media (min-width:768px){.article-head h1{font-size:36px}}
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--ink-3)}
  .article-meta .dot{color:var(--line)}

  .article-body{max-width:800px;margin:0 auto;font-size:16px;line-height:1.85;color:#1f2a3d;word-break:break-word}
  .article-body > *:first-child{margin-top:0}
  .article-body h2{font-size:23px;line-height:1.45;font-weight:700;color:var(--ink);margin:40px 0 16px;padding-left:12px;border-left:3px solid var(--accent)}
  .article-body h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--ink);margin:28px 0 12px}
  .article-body h4{font-size:16.5px;font-weight:700;margin:22px 0 10px}
  .article-body p{margin:0 0 18px}
  .article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--brand-dark)}
  .article-body strong{color:var(--ink);font-weight:700}
  .article-body ul,.article-body ol{margin:0 0 18px;padding-left:26px}
  .article-body li{margin-bottom:8px}
  .article-body blockquote{margin:24px 0;padding:16px 22px;background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--ink-2)}
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:12px;margin:24px auto;height:auto}
  .article-body figure{margin:24px 0}
  .article-body figcaption{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:10px}
  .article-body code{background:#f1f5f9;padding:2px 6px;border-radius:6px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;color:#0f2a5e}
  .article-body pre{background:#f8fafc;border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:22px 0;font-size:14px;line-height:1.7}
  .article-body pre code{background:none;padding:0;color:inherit}
  .article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
  .article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
  .article-body th{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
  .article-body hr{border:0;border-top:1px dashed var(--line);margin:32px 0}

  .empty-state{text-align:center;padding:56px 20px;border:1px dashed var(--line);border-radius:12px;background:#fbfdff}
  .empty-state i{font-size:34px;color:var(--brand);opacity:.55}
  .empty-state h2{font-size:19px;margin:16px 0 8px;border:0;padding:0}
  .empty-state p{color:var(--ink-2);font-size:15px;margin:0 0 20px}

  .article-foot{max-width:800px;margin:36px auto 0;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
  .tag-row .tag-label{font-size:13px;color:var(--ink-3)}
  .tag{display:inline-flex;padding:4px 10px;border-radius:6px;background:var(--bg);border:1px solid var(--line);font-size:12.5px;color:var(--ink-2);transition:border-color .16s ease,color .16s ease}
  .tag:hover{border-color:var(--brand);color:var(--brand)}

  /* ---------- Section / related ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-head{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;justify-content:space-between;margin-bottom:28px}
  .section-head h2{font-size:24px;font-weight:700;margin:0}
  @media (min-width:768px){.section-head h2{font-size:29px}}
  .section-head p{margin:8px 0 0;color:var(--ink-2);font-size:15px}

  .related-grid{display:grid;gap:20px;grid-template-columns:1fr}
  @media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
  .rec-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
  .rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#d3e2f8}
  .rec-thumb{aspect-ratio:16/9;overflow:hidden;background:#eef4fd}
  .rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
  .rec-card:hover .rec-thumb img{transform:scale(1.04)}
  .rec-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
  .rec-title{font-size:16.5px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
  .rec-card:hover .rec-title{color:var(--brand-dark)}
  .rec-meta{font-size:13px;color:var(--ink-3);margin-top:auto;display:flex;gap:10px;align-items:center}

  /* ---------- CTA band ---------- */
  .cta-band{position:relative;overflow:hidden;border-radius:20px;background:var(--brand-dark);color:#fff;padding:36px 26px}
  .cta-band::after{content:"";position:absolute;width:340px;height:340px;right:-120px;top:-160px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%)}
  @media (min-width:768px){
    .cta-band{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:46px 50px}
  }
  .cta-band h2{font-size:22px;font-weight:700;margin:0 0 10px;color:#fff}
  @media (min-width:768px){.cta-band h2{font-size:26px}}
  .cta-band p{margin:0;font-size:15px;color:rgba(255,255,255,.76);max-width:620px}
  .cta-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px}
  @media (min-width:768px){.cta-actions{margin-top:0;flex-shrink:0}}
  .cta-band .btn-outline{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
  .cta-band .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:#fff;padding:60px 0 0;margin-top:24px}
  .footer-grid{display:grid;gap:34px;grid-template-columns:1fr;padding-bottom:40px}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.9fr 1fr 1fr 1.3fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:10px}
  .footer-mark{width:32px;height:32px;border-radius:10px;background:var(--brand);display:grid;place-items:center;font-weight:700;color:#fff;flex-shrink:0}
  .footer-title{font-size:17px;font-weight:700;color:#fff}
  .site-footer h4{font-size:15px;font-weight:600;margin:0 0 16px;color:#fff}
  .site-footer p{color:rgba(255,255,255,.7);font-size:14.5px;line-height:1.8;margin:14px 0 0;max-width:360px}
  .footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
  .footer-links li{color:rgba(255,255,255,.7);font-size:14.5px}
  .footer-links a{color:rgba(255,255,255,.72);transition:color .16s ease}
  .footer-links a:hover{color:#fff}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* roulang page: category1 */
:root{
  --brand:#1560D6;
  --brand-dark:#0E3E8F;
  --brand-soft:#E8F0FE;
  --accent:#FF7A2F;
  --accent-dark:#E5651C;
  --teal:#12B39A;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#E3EAF4;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 24px -14px rgba(21,96,214,.22);
  --shadow-2:0 8px 18px -12px rgba(15,23,42,.18),0 22px 44px -20px rgba(21,96,214,.28);
  --ease:180ms ease;
  --header-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-dark);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;gap:16px;
  height:var(--header-h);
  justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--brand);color:#fff;
  display:grid;place-items:center;
  font-size:16px;font-weight:700;
  box-shadow:0 8px 16px -10px rgba(21,96,214,.95);
}
.brand-text{font-size:16.5px;font-weight:700;letter-spacing:0;white-space:nowrap;line-height:1.2;}
.brand-sub{display:block;font-size:11px;font-weight:400;color:var(--ink-3);line-height:1.3;margin-top:1px;}

.nav-menu{display:none;align-items:center;gap:2px;}
@media (min-width:1024px){.nav-menu{display:flex;}}
.nav-link{
  display:inline-block;
  padding:8px 11px;
  border-radius:999px;
  font-size:14px;
  color:var(--ink-2);
  white-space:nowrap;
  transition:color var(--ease),background-color var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link.is-active{color:var(--brand-dark);background:var(--brand-soft);font-weight:600;}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-cta{display:none;}
@media (min-width:1024px){
  .nav-cta{
    display:inline-flex;align-items:center;
    padding:9px 20px;border-radius:999px;
    background:var(--accent);color:#fff;
    font-size:14px;font-weight:600;
    box-shadow:0 8px 18px -12px rgba(255,122,47,.95);
    transition:background-color var(--ease),transform var(--ease),box-shadow var(--ease);
  }
  .nav-cta:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);}
  .nav-cta:active{transform:translateY(0);}
}

.nav-toggle{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;gap:4px;
  cursor:pointer;padding:0;
  transition:border-color var(--ease),background-color var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
@media (min-width:1024px){.nav-toggle{display:none;}}

/* Drawer */
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(15,23,42,.42);
  opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:90;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:#fff;z-index:95;
  transform:translateX(102%);
  transition:transform 220ms ease;
  display:flex;flex-direction:column;
  padding:20px;overflow-y:auto;
  box-shadow:-14px 0 40px -24px rgba(15,23,42,.45);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;}
.drawer-title{font-size:15px;font-weight:700;}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;font-size:20px;line-height:1;display:grid;place-items:center;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer-nav a{
  padding:13px 14px;border-radius:10px;font-size:15px;color:var(--ink-2);
  border:1px solid transparent;transition:all var(--ease);
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand-dark);}
.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;text-align:center;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{
  background:var(--accent);color:#fff;
  box-shadow:0 10px 22px -14px rgba(255,122,47,.95);
}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;color:var(--ink);border-color:var(--line);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--brand-dark);}
.btn-light:hover{background:#F2F7FF;color:var(--brand-dark);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}

.arrow-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
}
.arrow-link span{transition:transform var(--ease);display:inline-block;}
.arrow-link:hover span{transform:translateX(3px);}

/* ============ Badges ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-dark);}
.badge-accent{background:rgba(255,122,47,.12);color:#B8480D;}

/* ============ Hero ============ */
.page-hero{
  background:#fff;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 88% 18%,rgba(21,96,214,.06),transparent 46%),
                   linear-gradient(rgba(21,96,214,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(21,96,214,.045) 1px,transparent 1px);
  background-size:auto,24px 24px,24px 24px;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-top:44px;padding-bottom:48px;
}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-top:72px;padding-bottom:76px;}
}
.hero-badge{margin-bottom:18px;}
.page-hero h1{
  font-size:28px;line-height:1.3;letter-spacing:0;
}
@media (min-width:1024px){.page-hero h1{font-size:40px;line-height:1.24;}}
.hero-lead{
  margin-top:16px;font-size:16.5px;color:var(--ink-2);max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;
}
.hero-facts li{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13.5px;color:var(--ink-2);
  background:var(--bg);border:1px solid var(--line);
  padding:6px 12px;border-radius:999px;
}
.hero-facts li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);flex:0 0 auto;
}
.hero-figure{margin:0;position:relative;}
.hero-figure img{
  width:100%;border-radius:var(--radius);object-fit:cover;
  aspect-ratio:16/11;border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.hero-figure figcaption{
  margin-top:12px;font-size:13px;color:var(--ink-3);
}

/* ============ Anchor bar (mobile) ============ */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:60;
  display:flex;gap:10px;overflow-x:auto;
  padding:11px 20px;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.anchor-bar::-webkit-scrollbar{display:none;}
.anchor-pill{
  flex:0 0 auto;padding:7px 15px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:13px;color:var(--ink-2);white-space:nowrap;
  transition:all var(--ease);
}
.anchor-pill:hover{border-color:var(--brand);color:var(--brand);}
.anchor-pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
@media (min-width:1024px){.anchor-bar{display:none;}}

/* ============ Layout ============ */
.layout-two{
  display:grid;grid-template-columns:1fr;gap:24px;
  padding-top:32px;padding-bottom:56px;
}
@media (min-width:1024px){
  .layout-two{grid-template-columns:264px minmax(0,1fr);gap:44px;padding-top:48px;padding-bottom:80px;}
}
.side-rail{display:none;}
@media (min-width:1024px){
  .side-rail{
    display:block;position:sticky;top:92px;align-self:start;
  }
}
.rail-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow-1);
}
.rail-title{
  font-size:12px;font-weight:700;color:var(--ink-3);
  letter-spacing:.08em;margin-bottom:12px;padding-left:3px;
}
.rail-nav{display:flex;flex-direction:column;gap:2px;}
.rail-link{
  display:block;padding:9px 12px;border-radius:10px;
  font-size:14.5px;color:var(--ink-2);
  border-left:3px solid transparent;
  transition:all var(--ease);
}
.rail-link:hover{background:var(--brand-soft);color:var(--brand-dark);}
.rail-link.is-active{
  background:var(--brand-soft);color:var(--brand-dark);
  font-weight:600;border-left-color:var(--brand);
}
.rail-note{
  margin-top:16px;padding:16px;border-radius:var(--radius-sm);
  background:var(--brand-dark);color:#fff;
}
.rail-note h3{font-size:15px;margin-bottom:6px;}
.rail-note p{font-size:13px;color:rgba(255,255,255,.75);line-height:1.7;}
.rail-note a{
  display:inline-flex;margin-top:12px;font-size:13px;font-weight:600;
  color:#fff;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px;
}
.rail-note a:hover{color:#fff;border-color:#fff;}

.content-flow{min-width:0;}
.flow-section{margin-bottom:36px;scroll-margin-top:110px;}
.flow-section:last-child{margin-bottom:0;}
@media (min-width:1024px){.flow-section{margin-bottom:52px;}}

.block-head{margin-bottom:22px;}
.block-title{
  position:relative;padding-left:14px;
  font-size:23px;line-height:1.3;
}
@media (min-width:1024px){.block-title{font-size:27px;}}
.block-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;
  width:3px;border-radius:3px;background:var(--brand);
}
.block-desc{margin-top:10px;font-size:15px;color:var(--ink-2);padding-left:14px;}

.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);
}
@media (min-width:1024px){.panel{padding:26px;}}
.panel + .panel{margin-top:16px;}

/* Check list */
.check-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.check-list li{
  display:flex;gap:16px;padding:20px 22px;
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease);
}
.check-list li:last-child{border-bottom:0;}
.check-list li:hover{background:#FAFCFF;}
.check-icon{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand-dark);
  display:grid;place-items:center;font-size:13px;font-weight:700;
  margin-top:3px;
}
.check-list h3{font-size:16px;margin-bottom:4px;}
.check-list p{font-size:14.5px;color:var(--ink-2);line-height:1.75;}

/* Steps */
.step-list{display:grid;gap:16px;}
@media (min-width:768px){.step-list{grid-template-columns:repeat(2,minmax(0,1fr));}}
.step-card{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 22px 22px;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.step-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(21,96,214,.28);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.step-card h3{font-size:17px;margin-bottom:8px;}
.step-card p{font-size:14.5px;color:var(--ink-2);}

/* Device cards */
.device-grid{display:grid;gap:16px;}
@media (min-width:768px){.device-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.device-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease);
  display:flex;flex-direction:column;
}
.device-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.device-icon{
  width:42px;height:42px;border-radius:12px;background:var(--bg);
  border:1px solid var(--line);
  display:grid;place-items:center;margin-bottom:14px;
  color:var(--brand);font-size:17px;font-weight:700;
}
.device-card h3{font-size:16.5px;margin-bottom:8px;}
.device-card p{font-size:14px;color:var(--ink-2);flex:1;}
.device-meta{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--ink-3);
}

/* Trouble rows */
.trouble-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.trouble-row{
  display:grid;grid-template-columns:1fr;gap:8px;
  padding:20px 22px;border-bottom:1px solid var(--line);
  transition:background-color var(--ease);
}
.trouble-row:last-child{border-bottom:0;}
.trouble-row:hover{background:#FAFCFF;}
@media (min-width:768px){
  .trouble-row{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:22px;align-items:start;}
}
.trouble-q{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15.5px;font-weight:600;color:var(--ink);
}
.trouble-q::before{
  content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--accent);margin-top:9px;
}
.trouble-a{font-size:14.5px;color:var(--ink-2);padding-left:17px;}
@media (min-width:768px){.trouble-a{padding-left:0;}}

/* Security */
.security-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);
}
.security-list{display:grid;gap:14px;}
@media (min-width:768px){.security-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 26px;}}
.security-list li{
  display:flex;gap:11px;font-size:14.5px;color:var(--ink-2);line-height:1.75;
}
.security-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;border-radius:6px;
  background:var(--brand-soft);border:1px solid rgba(21,96,214,.25);
  margin-top:5px;
  background-image:linear-gradient(45deg,transparent 45%,var(--brand) 45%,var(--brand) 55%,transparent 55%),
                   linear-gradient(-45deg,transparent 62%,var(--brand) 62%,var(--brand) 72%,transparent 72%);
  background-size:100% 100%;
  background-repeat:no-repeat;
}

/* FAQ */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.faq-item:hover{border-color:rgba(21,96,214,.3);}
.faq-item.is-open{border-color:rgba(21,96,214,.38);box-shadow:var(--shadow-1);}
.faq-q{
  display:flex;align-items:center;gap:14px;width:100%;
  background:none;border:0;padding:19px 22px;
  text-align:left;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq-item.is-open .faq-q{color:var(--brand-dark);}
.faq-num{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);
  display:grid;place-items:center;font-size:12px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.faq-title{flex:1;line-height:1.55;}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:transform var(--ease);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms ease;}
.faq-a-inner{padding:0 22px 20px 64px;font-size:15px;color:var(--ink-2);line-height:1.8;}

/* CTA band */
.cta-wrap{padding:0 0 64px;}
@media (min-width:1024px){.cta-wrap{padding:0 0 88px;}}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-dark);
  border-radius:var(--radius);
  padding:30px 24px;
  display:flex;flex-direction:column;gap:20px;
  box-shadow:var(--shadow-1);
}
@media (min-width:1024px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 40px;gap:32px;}
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border-radius:50%;background:rgba(255,255,255,.06);pointer-events:none;
}
.cta-band h2{
  position:relative;z-index:1;
  color:#fff;font-size:22px;margin-bottom:8px;
}
@media (min-width:1024px){.cta-band h2{font-size:26px;}}
.cta-band p{position:relative;z-index:1;color:rgba(255,255,255,.76);font-size:15px;max-width:52em;}
.cta-band .btn{position:relative;z-index:1;flex:0 0 auto;}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:#fff;padding:52px 0 24px;}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12);
}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:700;color:#fff;flex:0 0 auto;
}
.footer-title{font-size:16px;font-weight:700;color:#fff;}
.site-footer p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.8;}
.site-footer h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:700;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links li{font-size:13.5px;color:rgba(255,255,255,.7);line-height:1.6;}
.footer-links a{color:rgba(255,255,255,.7);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-direction:column;gap:8px;
  padding-top:20px;font-size:13px;color:rgba(255,255,255,.55);
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}

/* roulang page: category2 */
:root{
    --brand:#1560D6;
    --brand-dark:#0E3E8F;
    --brand-soft:#E8F0FE;
    --accent:#FF7A2F;
    --teal:#12B39A;
    --bg:#F5F8FC;
    --line:#E3EAF4;
    --ink:#0F172A;
    --ink-2:#475569;
    --ink-3:#94A3B8;
    --radius:16px;
    --radius-sm:12px;
    --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 24px -14px rgba(21,96,214,.22);
    --shadow-2:0 8px 18px -12px rgba(15,23,42,.18),0 22px 44px -20px rgba(21,96,214,.28);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .16s ease}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input,textarea,select{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){.container{padding:0 32px}}
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:88px 0}}
  .section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:720px;margin-bottom:32px}
  @media (min-width:1024px){.section-head{margin-bottom:44px}}
  .section-head h2{font-size:24px;line-height:1.35;font-weight:700;letter-spacing:0;color:var(--ink)}
  @media (min-width:1024px){.section-head h2{font-size:30px}}
  .section-head p{margin-top:10px;color:var(--ink-2);font-size:15.5px}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-dark);background:var(--brand-soft);border-radius:6px;padding:5px 12px}
  .eyebrow-accent{background:rgba(255,122,47,.12);color:#B24A0C}

  /* ---------- Header ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
  .site-header.is-scrolled{box-shadow:var(--shadow-1)}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;box-shadow:0 6px 14px -8px rgba(21,96,214,.7)}
  .brand-text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
  @media (max-width:1023px){.brand-text{font-size:15px}}
  @media (max-width:400px){.brand-text{font-size:14px}}
  .nav-menu{display:none;align-items:center;gap:2px;flex:1;justify-content:center}
  @media (min-width:1024px){.nav-menu{display:flex}}
  .nav-link{padding:8px 13px;font-size:14.5px;color:var(--ink-2);border-radius:999px;white-space:nowrap;transition:color .16s ease,background-color .16s ease}
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link:active{color:var(--brand-dark)}
  .nav-link.is-active{color:var(--brand-dark);background:var(--brand-soft);font-weight:600}
  .header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14.5px;font-weight:600;line-height:1;border-radius:10px;padding:13px 22px;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;cursor:pointer}
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
  .btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px -12px rgba(255,122,47,.9)}
  .btn-accent:hover{background:#ED6A1D;transform:translateY(-1px);box-shadow:var(--shadow-2)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
  .btn-pill{border-radius:999px}
  .btn-block{width:100%}
  .btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed}
  .nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  @media (min-width:1024px){.nav-toggle{display:none}}
  .header-cta{display:none}
  @media (min-width:1024px){.header-cta{display:inline-flex}}

  .drawer{position:fixed;inset:0;z-index:80;display:none}
  .drawer.is-open{display:block}
  .drawer-mask{position:absolute;inset:0;background:rgba(15,23,42,.45)}
  .drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;padding:20px;display:flex;flex-direction:column;gap:20px;box-shadow:-18px 0 40px -24px rgba(15,23,42,.5);overflow-y:auto}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-2);display:grid;place-items:center}
  .drawer-close:hover{color:var(--brand);border-color:var(--brand)}
  .drawer-nav{display:flex;flex-direction:column;gap:18px}
  .drawer-nav a{font-size:15.5px;color:var(--ink-2);padding:4px 0}
  .drawer-nav a:hover{color:var(--brand)}
  .drawer-nav a.is-active{color:var(--brand-dark);font-weight:600}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
  .hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.08;pointer-events:none}
  .hero-glow{position:absolute;inset:0;background-image:radial-gradient(620px 320px at 88% 12%,rgba(21,96,214,.06),transparent 70%),radial-gradient(420px 260px at 6% 92%,rgba(255,122,47,.05),transparent 72%);pointer-events:none}
  .hero-inner{position:relative;z-index:1;padding:48px 0}
  @media (min-width:1024px){.hero-inner{padding:76px 0}}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:52px}}
  .hero h1{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:0;margin-top:16px;color:var(--ink)}
  @media (min-width:1024px){.hero h1{font-size:40px;line-height:1.22}}
  .hero-sub{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:560px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;padding-top:22px;border-top:1px dashed var(--line)}
  .hero-points li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
  .hero-points li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--teal)}
  .hero-media{position:relative}
  .hero-media img{width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-2);object-fit:cover}
  .hero-chip{position:absolute;left:16px;bottom:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 14px;box-shadow:var(--shadow-1);font-size:13px;color:var(--ink-2)}
  .hero-chip strong{display:block;font-size:18px;color:var(--brand-dark);font-variant-numeric:tabular-nums}

  /* ---------- Path cards ---------- */
  .path-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.path-grid{grid-template-columns:repeat(3,1fr)}}
  .path-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
  .path-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDDF2}
  .path-icon{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand-dark);display:grid;place-items:center;font-size:18px;font-weight:700;margin-bottom:16px}
  .path-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
  .path-card p{font-size:14.5px;color:var(--ink-2)}
  .arrow-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand)}
  .arrow-link span{transition:transform .18s ease}
  .arrow-link:hover span{transform:translateX(3px)}
  .arrow-link:hover{color:var(--brand-dark)}

  /* ---------- Timeline ---------- */
  .timeline{position:relative;padding:6px 0}
  .timeline::before{content:"";position:absolute;top:0;bottom:0;left:20px;width:2px;background:linear-gradient(180deg,rgba(21,96,214,.12),rgba(21,96,214,.42),rgba(21,96,214,.12))}
  .tl-item{position:relative;padding-left:56px;margin-bottom:18px}
  .tl-item:last-child{margin-bottom:0}
  .tl-item::after{content:"";position:absolute;left:13px;top:28px;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(21,96,214,.08)}
  .tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
  .tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFDDF2}
  .tl-num{display:inline-grid;place-items:center;width:34px;height:24px;border-radius:6px;background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:12px}
  .tl-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
  .tl-card p{font-size:14.5px;color:var(--ink-2)}
  .tl-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
  .tl-meta span{font-size:12.5px;color:var(--ink-3);border:1px solid var(--line);border-radius:6px;padding:3px 9px}
  @media (min-width:900px){
    .timeline::before{left:50%;transform:translateX(-1px)}
    .tl-item{display:grid;grid-template-columns:1fr 1fr;gap:0 76px;padding-left:0;margin-bottom:28px}
    .tl-item::after{left:50%;top:26px;transform:translateX(-50%)}
    .tl-card{grid-column:2}
    .tl-item:nth-child(odd) .tl-card{grid-column:1}
  }

  /* ---------- Stats + tags ---------- */
  .stat-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  @media (min-width:768px){.stat-strip{grid-template-columns:repeat(4,1fr)}}
  .stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px;box-shadow:var(--shadow-1);transition:box-shadow .18s ease,transform .18s ease}
  .stat:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .stat-num{font-size:26px;font-weight:700;color:var(--brand-dark);font-variant-numeric:tabular-nums;line-height:1.2}
  .stat-label{margin-top:6px;font-size:13.5px;color:var(--ink-2)}
  .tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .tag{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-size:14px;border:1px solid transparent;transition:transform .18s ease,border-color .18s ease,background-color .18s ease}
  .tag:hover{transform:translateY(-1px);border-color:var(--brand);background:#fff}
  .tag i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}

  /* ---------- Scene cards ---------- */
  .scene-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.scene-grid{grid-template-columns:repeat(3,1fr)}}
  .scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
  .scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .scene-card img{width:100%;height:172px;object-fit:cover}
  .scene-body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}
  .scene-body h3{font-size:17.5px;font-weight:700}
  .scene-body p{font-size:14.5px;color:var(--ink-2)}
  .scene-body .arrow-link{margin-top:auto}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-1);overflow:hidden}
  .faq-q{display:flex;align-items:center;gap:14px;width:100%;text-align:left;padding:20px 22px;min-height:64px;font-size:16px;font-weight:600;color:var(--ink);transition:color .18s ease}
  .faq-q:hover{color:var(--brand)}
  .faq-num{flex-shrink:0;width:30px;height:30px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);font-size:13px;display:grid;place-items:center;font-variant-numeric:tabular-nums}
  .faq-text{flex:1}
  .faq-icon{position:relative;flex-shrink:0;width:18px;height:18px}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
  .faq-icon::before{top:8px;left:0;width:18px;height:2px}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px}
  .faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
  .faq-item.is-open .faq-q{color:var(--brand-dark)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
  .faq-a-inner{padding:0 22px 22px 66px;font-size:14.5px;color:var(--ink-2)}
  @media (max-width:560px){.faq-a-inner{padding-left:22px}}

  /* ---------- CTA ---------- */
  .cta-band{position:relative;overflow:hidden;background:linear-gradient(135deg,#0E3E8F,#1560D6);border-radius:var(--radius);padding:36px 28px;color:#fff;box-shadow:var(--shadow-2)}
  .cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(255,122,47,.22)}
  .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
  @media (min-width:900px){.cta-inner{grid-template-columns:1.4fr auto;gap:40px}}
  .cta-band h2{font-size:24px;font-weight:700;line-height:1.35}
  @media (min-width:1024px){.cta-band h2{font-size:28px}}
  .cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.82);max-width:640px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  .cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
  .cta-band .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.1)}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:#fff;margin-top:0;padding:56px 0 24px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--accent));display:grid;place-items:center;font-weight:700;color:#fff;font-size:16px}
  .footer-title{font-size:16.5px;font-weight:700}
  .site-footer p{color:rgba(255,255,255,.7);font-size:14px;max-width:360px}
  .site-footer h4{font-size:14.5px;font-weight:700;margin-bottom:14px;color:#fff}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a,.footer-links li{color:rgba(255,255,255,.7);font-size:14px}
  .footer-links a:hover{color:#fff}
  .footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}

/* roulang page: category3 */
:root{
  --brand:#1560D6;
  --brand-dark:#0E3E8F;
  --brand-soft:#E8F0FE;
  --accent:#FF7A2F;
  --accent-soft:#FFF0E6;
  --teal:#12B39A;
  --bg:#F5F8FC;
  --line:#E3EAF4;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --radius:16px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05), 0 10px 24px -14px rgba(21,96,214,.22);
  --shadow-2:0 8px 18px -12px rgba(15,23,42,.18), 0 22px 44px -20px rgba(21,96,214,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 6px 14px -8px rgba(21,96,214,.8);
}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  display:inline-block;padding:8px 12px;border-radius:999px;
  font-size:15px;color:var(--ink-2);transition:color .16s ease,background-color .16s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand-dark);background:var(--brand-soft);font-weight:600}
.header-cta{
  display:inline-flex;align-items:center;gap:6px;margin-left:12px;
  padding:10px 20px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease;
  box-shadow:0 8px 18px -12px rgba(255,122,47,.95);
}
.header-cta:hover{background:#F26B1E;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.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;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.42);opacity:0;visibility:hidden;
  transition:opacity .2s ease,visibility .2s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:80;
  transform:translateX(102%);transition:transform .24s ease;padding:20px;
  display:flex;flex-direction:column;gap:8px;box-shadow:var(--shadow-2);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  cursor:pointer;font-size:18px;line-height:1;color:var(--ink-2);
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-link{
  padding:14px 14px;border-radius:12px;font-size:15px;color:var(--ink-2);
  transition:background-color .16s ease,color .16s ease;
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand-dark)}
.drawer-link.is-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}
.drawer-cta{
  margin-top:12px;padding:14px;border-radius:12px;background:var(--accent);color:#fff;
  text-align:center;font-weight:600;
}
.drawer-cta:hover{background:#F26B1E;color:#fff}

@media (max-width:1023px){
  .nav-menu,.header-cta{display:none}
  .nav-toggle{display:flex}
}

/* ============ 通用 ============ */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{max-width:760px;margin-bottom:32px}
.eyebrow{
  display:inline-block;padding:4px 10px;border-radius:6px;background:var(--brand-soft);
  color:var(--brand-dark);font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:14px;
}
.h2{font-size:26px;line-height:1.34}
@media (min-width:768px){.h2{font-size:30px;line-height:1.33}}
.h3{font-size:20px;line-height:1.4}
.lead{color:var(--ink-2);font-size:15px;margin-top:12px}
.muted{color:var(--ink-2)}
.tiny{font-size:14px;line-height:1.6}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.arrow-link i{transition:transform .18s ease;font-style:normal}
.arrow-link:hover i{transform:translateX(3px)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:10px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px -14px rgba(255,122,47,.95)}
.btn-primary:hover{background:#F26B1E;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn[disabled]{opacity:.5;cursor:not-allowed}

.badge{
  display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:6px;
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-dark);
}
.badge-accent{background:var(--accent-soft);color:#C4531A}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);padding:24px;
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}

/* ============ hero ============ */
.hero{
  position:relative;
  background-image:linear-gradient(rgba(245,248,252,.94),rgba(245,248,252,.99)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:56px 0 56px;
}
@media (min-width:1024px){.hero{padding:80px 0 76px}}
.hero-grid{display:grid;gap:40px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px}}
.hero-title{font-size:28px;line-height:1.3}
@media (min-width:768px){.hero-title{font-size:34px;line-height:1.28}}
@media (min-width:1024px){.hero-title{font-size:40px;line-height:1.2}}
.hero-title em{font-style:normal;color:var(--brand-dark)}
.hero-sub{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:32px;padding-top:24px;border-top:1px dashed var(--line)}
.hero-meta-item strong{display:block;font-size:22px;color:var(--brand-dark)}
.hero-meta-item span{font-size:13px;color:var(--ink-3)}
.hero-figure{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);padding:14px;
}
.hero-figure img{border-radius:var(--radius-sm);width:100%;height:280px;object-fit:cover}
@media (min-width:1024px){.hero-figure img{height:340px}}
.hero-figure-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 6px 4px}
.hero-figure-foot b{font-size:15px;color:var(--ink)}
.hero-figure-foot span{font-size:13px;color:var(--ink-3)}

/* ============ 指标条 ============ */
.metrics-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:28px}
@media (min-width:1024px){.metrics-card{padding:36px 40px}}
.metric-row{display:grid;grid-template-columns:1fr;gap:8px;padding:16px 0;border-bottom:1px dashed var(--line)}
.metric-row:last-child{border-bottom:0;padding-bottom:0}
.metric-row:first-child{padding-top:0}
@media (min-width:768px){
  .metric-row{grid-template-columns:180px 1fr 88px;align-items:center;gap:20px}
}
.metric-name{font-size:15px;font-weight:600;color:var(--ink)}
.metric-name small{display:block;font-weight:400;font-size:13px;color:var(--ink-3)}
.metric-track{height:10px;border-radius:999px;background:var(--brand-soft);overflow:hidden}
.metric-fill{height:100%;border-radius:999px;background:var(--brand)}
.metric-fill.alt{background:var(--teal)}
.metric-fill.hot{background:var(--accent)}
.metric-value{font-size:18px;font-weight:700;color:var(--brand-dark);text-align:left}
@media (min-width:768px){.metric-value{text-align:right}}

/* ============ 双列对照 ============ */
.compare-grid{display:grid;gap:24px}
@media (min-width:900px){.compare-grid{grid-template-columns:1fr 1fr;gap:28px}}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);padding:24px;display:flex;flex-direction:column;
}
@media (min-width:1024px){.compare-card{padding:32px}}
.compare-card.featured{border-color:#C9DCFB;box-shadow:var(--shadow-2)}
.compare-head{display:flex;align-items:center;gap:10px;padding-bottom:18px;margin-bottom:6px;border-bottom:1px solid var(--line)}
.compare-head h3{font-size:17px}
.compare-head .dot{width:10px;height:10px;border-radius:50%;background:var(--ink-3);flex:0 0 auto}
.compare-card.featured .dot{background:var(--accent)}
.compare-list li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--ink-2);
}
.compare-list li:last-child{border-bottom:0}
.compare-list li strong{display:block;font-weight:600;color:var(--ink);font-size:15px;margin-bottom:2px}
.cmp-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;
  font-size:12px;font-weight:700;background:#F1F5F9;color:var(--ink-3);margin-top:2px;
}
.compare-card.featured .cmp-icon{background:var(--accent-soft);color:#C4531A}
.hl{color:#C4531A;font-weight:600;background:var(--accent-soft);border-radius:4px;padding:0 4px}

/* ============ 结论卡 ============ */
.verdict{
  margin-top:28px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--radius);box-shadow:var(--shadow-1);padding:24px 26px;
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.verdict p{font-size:17px;font-weight:600;color:var(--ink);flex:1 1 420px}
.verdict span{font-size:14px;color:var(--ink-2);flex:1 1 100%}

/* ============ 福利类型卡 ============ */
.type-grid{display:grid;gap:20px}
@media (min-width:640px){.type-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.type-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.type-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .18s ease,transform .18s ease}
.type-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.type-card img{width:100%;height:150px;object-fit:cover}
.type-body{padding:20px}
.type-body h3{font-size:17px;margin-bottom:8px}
.type-body p{font-size:14px;color:var(--ink-2);line-height:1.7}
.type-body .arrow-link{margin-top:14px}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-1);overflow:hidden}
.faq-item summary{
  display:flex;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);transition:color .18s ease,background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand);background:#FBFCFE}
.faq-no{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);
  display:grid;place-items:center;font-size:13px;font-weight:700;
}
.faq-item summary .faq-plus{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;border-radius:7px;background:#F1F5F9;
  display:grid;place-items:center;font-size:15px;color:var(--ink-2);transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--brand-dark)}
.faq-item[open] summary .faq-plus{transform:rotate(45deg);background:var(--accent-soft);color:#C4531A}
.faq-body{padding:0 22px 20px 62px;font-size:15px;color:var(--ink-2)}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-dark);border-radius:var(--radius);padding:36px 28px;color:#fff;
  display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-2);
}
@media (min-width:1024px){.cta-band{padding:48px 48px}}
.cta-band h2{font-size:24px;line-height:1.35;color:#fff}
@media (min-width:768px){.cta-band h2{font-size:28px}}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.75);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#fff;margin-top:80px;padding:56px 0 26px}
.footer-grid{display:grid;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-mark{width:32px;height:32px;border-radius:10px;background:var(--brand);display:grid;place-items:center;font-weight:700;font-size:15px}
.footer-title{font-size:16px;font-weight:700}
.site-footer p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.8}
.site-footer h4{font-size:15px;margin-bottom:14px;color:#fff}
.footer-links li{margin-bottom:10px}
.footer-links a,.footer-links span{font-size:14px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
}
.footer-bottom span{font-size:13px;color:rgba(255,255,255,.6)}

/* roulang page: category4 */
:root{
  --brand:#1560D6;
  --brand-dark:#0E3E8F;
  --brand-soft:#E8F0FE;
  --accent:#FF7A2F;
  --accent-dark:#E8641A;
  --accent-soft:rgba(255,122,47,.12);
  --teal:#12B39A;
  --bg:#F5F8FC;
  --card:#FFFFFF;
  --line:#E3EAF4;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(15,23,42,.05),0 10px 24px -14px rgba(21,96,214,.22);
  --shadow-2:0 8px 18px -12px rgba(15,23,42,.18),0 22px 44px -20px rgba(21,96,214,.28);
  --ease:180ms ease;
}
*{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","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin: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 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 100%);
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand:hover .brand-text{color:var(--brand);}
.brand-text{transition:color var(--ease);}

.nav-menu{display:none;align-items:center;gap:4px;}
@media (min-width:1024px){.nav-menu{display:flex;}}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-2);
  transition:color var(--ease),background-color var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-link:active{background:#D8E6FD;}
.nav-link.is-active{
  color:var(--brand-dark);
  background:var(--brand-soft);
  font-weight:600;
  box-shadow:inset 0 -3px 0 0 var(--brand);
}
.header-actions{display:flex;align-items:center;gap:10px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:11px 20px;
  font-size:15px;font-weight:600;
  line-height:1.2;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
  border:1px solid transparent;
  cursor:pointer;
}
.btn:active{transform:translateY(0);}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 20px -14px rgba(255,122,47,.85);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(255,122,47,.9);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-blue{background:var(--brand);color:#fff;box-shadow:0 10px 20px -14px rgba(21,96,214,.85);}
.btn-blue:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-pill{border-radius:999px;padding:10px 22px;}
.btn-block{width:100%;}
.header-cta{display:none;}
@media (min-width:1024px){.header-cta{display:inline-flex;}}

.nav-toggle{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;
  transition:border-color var(--ease),background-color var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft);}
@media (min-width:1024px){.nav-toggle{display:none;}}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);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;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.42);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  background:#fff;z-index:80;
  transform:translateX(102%);
  transition:transform 220ms ease;
  padding:20px;display:flex;flex-direction:column;gap:6px;
  box-shadow:-20px 0 44px -28px rgba(15,23,42,.4);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--brand-dark);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--ink-2);
  transition:border-color var(--ease),color var(--ease);
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-link{
  display:block;padding:13px 14px;border-radius:12px;
  font-size:15px;color:var(--ink-2);transition:background-color var(--ease),color var(--ease);
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand-dark);}
.drawer-link.is-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;}
.drawer-cta{margin-top:14px;}

/* ============ Sections ============ */
.section{padding:52px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:28px;}
@media (min-width:1024px){.section-head{margin-bottom:40px;}}
.section-title{font-size:24px;line-height:1.4;font-weight:700;color:var(--ink);}
@media (min-width:1024px){.section-title{font-size:30px;line-height:1.35;}}
.section-sub{margin-top:10px;color:var(--ink-2);font-size:15px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;background:#fff;
  padding:44px 0 56px;
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.hero{padding:76px 0 92px;}}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.07;pointer-events:none;
}
.hero-grid{position:relative;display:grid;gap:32px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:48px;}}
.hero-h1{font-size:28px;line-height:1.35;font-weight:700;letter-spacing:0;}
@media (min-width:1024px){.hero-h1{font-size:40px;line-height:1.28;}}
.hero-h1 em{font-style:normal;color:var(--brand);}
.hero-lead{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-media{
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:#fff;
}
.hero-media img{width:100%;height:100%;aspect-ratio:16/11;object-fit:cover;}

.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.chip{
  font-size:13px;color:var(--ink-2);background:var(--bg);
  border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  transition:border-color var(--ease),color var(--ease);
}
.chip:hover{border-color:var(--brand);color:var(--brand-dark);}

/* ============ 自检指标条 ============ */
.metric-strip{
  display:grid;gap:16px;
  grid-template-columns:repeat(2,minmax(0,1fr));
}
@media (min-width:1024px){.metric-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.metric:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.metric-num{
  font-size:32px;font-weight:700;color:var(--brand-dark);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.metric-num span{font-size:14px;font-weight:600;color:var(--ink-3);margin-left:4px;}
.metric-label{margin-top:8px;font-size:14px;color:var(--ink-2);}
.metric-bar{height:6px;border-radius:999px;background:var(--brand-soft);margin-top:14px;overflow:hidden;}
.metric-bar i{display:block;height:100%;border-radius:999px;background:var(--brand);}
.metric-bar.accent i{background:var(--accent);}
.metric-bar.teal i{background:var(--teal);}

/* ============ 大图卡片瀑布 ============ */
.falls{display:grid;gap:16px;}
@media (min-width:1024px){.falls{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}
.fall-col{display:grid;gap:16px;align-content:start;}
@media (min-width:1024px){
  .fall-col{gap:24px;}
  .fall-col.offset{padding-top:56px;}
}
.fall-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.fall-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CFE0F9;}
.fall-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.fall-body{padding:22px;}
@media (min-width:1024px){.fall-body{padding:26px;}}
.badge{
  display:inline-block;font-size:12px;font-weight:600;
  color:var(--brand-dark);background:var(--brand-soft);
  border-radius:6px;padding:4px 10px;
}
.badge-accent{color:var(--accent-dark);background:var(--accent-soft);}
.badge-teal{color:#0A7F6D;background:rgba(18,179,154,.13);}
.fall-body h3{margin-top:12px;font-size:20px;line-height:1.45;font-weight:700;color:var(--ink);}
.fall-body p{margin-top:10px;font-size:15px;color:var(--ink-2);}
.check-list{margin-top:16px;display:grid;gap:9px;}
.check-list li{
  position:relative;padding-left:22px;font-size:14px;color:var(--ink-2);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:3px;
  background:var(--brand-soft);border:1.5px solid var(--brand);
}
.arrow-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.arrow-link i{font-style:normal;transition:transform var(--ease);}
.arrow-link:hover{color:var(--brand-dark);}
.arrow-link:hover i{transform:translateX(3px);}

/* ============ 处理顺序 ============ */
.flow{display:grid;gap:16px;}
@media (min-width:768px){.flow{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}}
.flow-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;position:relative;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.flow-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.flow-num{
  width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-dark);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.flow-item h3{margin-top:14px;font-size:17px;font-weight:700;color:var(--ink);}
.flow-item p{margin-top:8px;font-size:15px;color:var(--ink-2);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:#CFE0F9;}
.faq-item.is-open{border-color:var(--brand);box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 20px;text-align:left;
}
.faq-num{
  flex:none;width:30px;height:30px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.faq-text{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;}
.faq-item.is-open .faq-text{color:var(--brand-dark);}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-3);border-radius:2px;
}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px;}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px;transition:opacity var(--ease);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-item.is-open .faq-icon::before{background:var(--accent);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms ease,opacity 220ms ease;
  opacity:0;
}
.faq-item.is-open .faq-a{opacity:1;}
.faq-a-inner{padding:0 20px 20px 64px;color:var(--ink-2);font-size:15px;line-height:1.8;}
@media (max-width:520px){.faq-a-inner{padding:0 18px 18px 18px;}}

/* ============ CTA 转化条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius);
  background:var(--brand-dark);
  color:#fff;padding:34px 24px;
  display:grid;gap:20px;
}
@media (min-width:1024px){.cta-band{padding:48px 48px;grid-template-columns:1.4fr auto;align-items:center;gap:36px;}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta-band > *{position:relative;}
.cta-band h2{font-size:24px;line-height:1.4;font-weight:700;}
@media (min-width:1024px){.cta-band h2{font-size:28px;}}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.78);font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-outline{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.35);}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.16);border-color:#fff;color:#fff;}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:#fff;padding:52px 0 0;margin-top:0;}
@media (min-width:1024px){.site-footer{padding:72px 0 0;}}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-mark{
  width:36px;height:36px;border-radius:10px;
  background:var(--brand);color:#fff;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
}
.footer-title{font-size:17px;font-weight:700;}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;max-width:400px;}
.site-footer h4{font-size:15px;font-weight:700;margin-bottom:14px;color:#fff;}
.footer-links{display:grid;gap:10px;}
.footer-links li{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a{color:rgba(255,255,255,.72);transition:color var(--ease);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,.14);
  padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}

/* ============ 通用小工具 ============ */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  font-size:13px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;transition:border-color var(--ease),color var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand-dark);}
.split{display:grid;gap:24px;}
@media (min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:32px;align-items:center;}}
.split img{border-radius:var(--radius);border:1px solid var(--line);object-fit:cover;aspect-ratio:16/10;width:100%;box-shadow:var(--shadow-1);}
.plain-list{display:grid;gap:12px;margin-top:18px;}
.plain-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-2);}
.plain-list li b{flex:none;color:var(--brand-dark);font-weight:700;font-variant-numeric:tabular-nums;}