/* roulang page: index */
:root{
  --primary:#1668A8;
  --primary-h:#12578E;
  --primary-a:#0E4A7A;
  --accent:#F08A24;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --border:#E3E9F0;
  --title:#16232F;
  --text:#3C4B5A;
  --muted:#7A8899;
  --light:#E9F2FA;
  --footer:#0E2136;
  --r-s:8px;
  --r-m:12px;
  --r-l:16px;
  --r-xl:18px;
  --sh-1:0 4px 16px rgba(22,50,80,.06);
  --sh-2:0 10px 28px rgba(22,50,80,.10);
  --sh-3:0 6px 20px rgba(22,50,80,.12);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease}
a:hover{color:var(--primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4vw,44px);line-height:1.25}
h2{font-size:clamp(24px,3vw,32px)}
h3{font-size:20px}
p{margin:0}
button{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}
.sec{padding:88px 0}
.sec-alt{background:#FFFFFF}

/* ============ 左侧竖向导航 ============ */
.side{
  position:fixed;
  left:0;top:0;
  width:var(--side-w);
  height:100vh;
  background:#fff;
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  z-index:1030;
}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 20px 14px}
.brand{display:flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-m);
  background:var(--light);
  color:var(--primary);
  border:1px solid #D6E7F6;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;color:var(--title);font-weight:700;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.4px}
.side-burger{
  width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:var(--r-m);
  display:flex;align-items:center;justify-content:center;color:var(--title);cursor:pointer;
}
.side-burger:hover{border-color:#C9DCEE;color:var(--primary)}
.side-body{flex:1;display:flex;flex-direction:column;overflow-y:auto;padding:6px 0 18px}
.side-nav{display:flex;flex-direction:column;padding:6px 12px}
.side-link{
  display:flex;align-items:center;
  min-height:46px;
  padding:0 16px 0 17px;
  font-size:14px;
  color:var(--text);
  border-left:3px solid transparent;
  border-radius:0 var(--r-s) var(--r-s) 0;
}
.side-link:hover{background:var(--light);color:var(--primary)}
.side-link.active{background:var(--light);color:var(--primary);border-left-color:var(--primary);font-weight:600}
.side-cta{
  margin:16px 20px 0;
  display:flex;align-items:center;justify-content:center;
  height:48px;border-radius:10px;
  background:var(--primary);color:#fff;font-weight:600;font-size:15px;
}
.side-cta:hover{background:var(--primary-h);color:#fff;transform:translateY(-1px)}
.side-foot{margin-top:auto;padding:24px 20px 0;border-top:1px solid var(--border);font-size:13px;color:var(--muted);line-height:1.9}
.side-foot-t{margin-top:10px;font-size:12px;font-weight:600;color:var(--title);letter-spacing:.6px}
.side-foot-t:first-child{margin-top:0}
.side-foot a{color:var(--muted)}
.side-foot a:hover{color:var(--primary)}

.site-main{margin-left:var(--side-w);min-height:60vh}

/* ============ 按钮与通用组件 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;border:1px solid transparent;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-main:hover{background:var(--primary-h);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{background:var(--primary-a)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:10px;
  background:#fff;color:var(--primary);border:1.5px solid var(--primary);
  font-size:15px;font-weight:600;
}
.btn-ghost:hover{background:var(--light);color:var(--primary-h);border-color:var(--primary-h);transform:translateY(-1px)}
.btn-invert{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:10px;border:0;
  background:#fff;color:var(--primary);font-weight:600;font-size:15px;
}
.btn-invert:hover{background:#EAF3FA;color:var(--primary-a)}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary)}
.link-more svg{transition:transform .25s ease}
.link-more:hover svg{transform:translateX(4px)}
.badge-soft{
  display:inline-flex;align-items:center;
  height:26px;padding:0 10px;border-radius:var(--r-s);
  background:var(--light);color:var(--primary);font-size:12px;font-weight:600;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 12px;border-radius:var(--r-s);
  background:var(--light);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.6px;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.sec-sub{margin-top:12px;font-size:15px;color:var(--muted);max-width:660px}

/* ============ Hero ============ */
.hero{position:relative;padding:72px 0 80px;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-140px;top:30px;width:320px;height:320px;
  border:1px solid #DCE6F1;border-radius:50%;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{margin-top:20px}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.85;color:var(--text);max-width:600px}
.hero-btns{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.trust-item{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 14px;border-radius:20px;
  background:#fff;border:1px solid var(--border);
  font-size:13px;color:var(--text);
}
.trust-item svg{color:var(--primary);flex:0 0 auto}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-xl);border:1px solid var(--border);box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-30px;bottom:26px;
  display:flex;gap:26px;
  padding:16px 22px;background:#fff;border-radius:var(--r-m);box-shadow:var(--sh-3);
}
.fc-item{display:flex;flex-direction:column;line-height:1.4}
.fc-item strong{font-size:20px;color:var(--title);font-weight:700}
.fc-item span{font-size:12px;color:var(--muted)}

/* ============ 功能分组（左右交错） ============ */
.feat-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-top:72px}
.feat-row:first-of-type{margin-top:0}
.feat-row.rev .feat-media{order:2}
.feat-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-l);box-shadow:var(--sh-1)}
.feat-txt .feat-num{display:block;font-size:44px;font-weight:700;line-height:1;color:rgba(22,104,168,.3)}
.feat-txt h3{margin-top:14px;font-size:22px}
.feat-txt p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--text)}
.feat-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.feat-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text)}
.feat-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--accent);opacity:.85;
}
.feat-txt .link-more{margin-top:20px}

/* ============ 使用场景 ============ */
.tab-line{display:flex;flex-wrap:wrap;gap:4px;border-bottom:1px solid var(--border);margin-bottom:28px}
.tab-line a{
  padding:12px 16px;font-size:14px;font-weight:600;color:var(--muted);
  border-bottom:2px solid transparent;margin-bottom:-1px;
}
.tab-line a:hover{color:var(--primary)}
.tab-line a.active{color:var(--primary);border-bottom-color:var(--primary)}
.scene-strip{display:flex;gap:24px;overflow-x:auto;padding:4px 4px 20px;scroll-snap-type:x mandatory}
.scene-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-l);overflow:hidden;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,104,168,.3)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.sc-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.sc-body h3{font-size:17px}
.sc-body p{font-size:14px;color:var(--muted);line-height:1.75}
.sc-body .link-more{margin-top:auto;font-size:13px}

/* ============ 成功案例 ============ */
.case-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.logo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.logo-cell{
  display:flex;align-items:center;justify-content:center;
  height:64px;border-radius:10px;background:#EFF3F8;
  font-size:14px;font-weight:600;color:#5D6C7C;
  transition:background-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.logo-cell:hover{background:#fff;box-shadow:var(--sh-1);transform:translateY(-2px);color:var(--primary)}
.case-cards{display:grid;grid-template-columns:1fr;gap:20px}
.case-card{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-l);
  padding:26px 24px 22px;box-shadow:var(--sh-1);
}
.case-card::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:var(--primary);border-radius:var(--r-l) var(--r-l) 0 0}
.case-card h3{font-size:18px}
.case-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8}
.case-metrics{display:flex;gap:36px;margin-top:18px;padding-top:16px;border-top:1px solid var(--border)}
.metric strong{font-size:26px;color:var(--accent);font-weight:700;line-height:1.2}
.metric strong em{font-style:normal;font-size:13px;color:var(--muted);font-weight:600;margin-left:2px}
.metric span{display:block;font-size:12px;color:var(--muted);margin-top:2px}

/* ============ 价格 ============ */
.price-table{
  display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);
}
.pt-cell{
  display:flex;align-items:center;
  padding:15px 22px;border-bottom:1px solid var(--border);
  font-size:14px;color:var(--text);
}
.pt-cell.hl{background:rgba(22,104,168,.06)}
.pt-head{flex-direction:column;align-items:flex-start;gap:8px;padding:26px 22px;position:relative}
.pt-corner strong{font-size:18px;color:var(--title)}
.pt-corner span{font-size:13px;color:var(--muted)}
.pt-name{font-size:15px;font-weight:700;color:var(--title)}
.pt-price{font-size:30px;font-weight:700;color:var(--primary);line-height:1}
.pt-price em{font-style:normal;font-size:13px;font-weight:600;color:var(--muted);margin-left:4px}
.pt-note{font-size:12px;color:var(--muted)}
.ribbon{
  position:absolute;right:0;top:0;
  background:var(--primary);color:#fff;font-size:11px;font-weight:600;
  padding:4px 12px;border-radius:0 var(--r-l) 0 var(--r-m);letter-spacing:.5px;
}
.pt-name-cell{font-weight:600;color:var(--title);font-size:14px}
.ck{color:var(--primary);flex:0 0 auto}
.na{display:inline-block;width:14px;height:2px;background:#C9D2DC;border-radius:2px}
.pt-foot{flex-direction:column;align-items:stretch;gap:0;padding:22px;border-bottom:0}
.pt-foot .btn-main,.pt-foot .btn-ghost{width:100%}
.price-mobile{display:none}

/* ============ CMS 资讯区 ============ */
.cms-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cms-card{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--r-l);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.cms-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,104,168,.3)}
.cms-big{grid-column:span 2;display:grid;grid-template-columns:1.05fr 1fr}
.cms-thumb{position:relative;overflow:hidden}
.cms-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.cms-big .cms-thumb img{aspect-ratio:auto;height:100%;min-height:280px}
.cms-badge{
  position:absolute;left:14px;top:14px;
  padding:0 10px;height:26px;display:inline-flex;align-items:center;
  border-radius:var(--r-s);background:rgba(22,104,168,.85);color:#fff;
  font-size:12px;font-weight:600;
}
.cms-body{padding:24px;display:flex;flex-direction:column;gap:12px}
.cms-big .cms-body{padding:34px 32px;justify-content:center}
.cms-body h3{
  font-size:17px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-big .cms-body h3{font-size:23px}
.cms-body p{
  font-size:14px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-big .cms-body p{-webkit-line-clamp:3;font-size:15px}
.cms-meta{
  display:flex;align-items:center;gap:10px;margin-top:auto;
  font-size:13px;color:var(--muted);
}
.cms-meta .dot{width:3px;height:3px;border-radius:50%;background:#C4CFDA}
.cms-meta .arrow{margin-left:auto;color:var(--primary);font-weight:700;transition:transform .25s ease}
.cms-card:hover .cms-meta .arrow{transform:translateX(4px)}
.cms-empty{
  grid-column:span 2;
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;background:#fff;border:1px dashed var(--border);border-radius:var(--r-l);
  text-align:center;color:var(--muted);font-size:15px;
}
.cms-empty svg{color:var(--primary)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.accordion-item{border:1px solid var(--border);border-radius:0;background:#fff;margin-bottom:12px;overflow:hidden}
.accordion-item:first-of-type,.accordion-item:last-of-type{border-radius:var(--r-m)}
.accordion-button{
  display:flex;align-items:center;gap:16px;
  width:100%;padding:20px 22px;
  background:#fff;border:0;
  font-size:17px;font-weight:600;color:var(--title);
  box-shadow:none !important;
  border-left:3px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,color .25s ease;
}
.accordion-button:not(.collapsed){color:var(--primary);border-left-color:var(--primary);background:#FBFDFF}
.accordion-button::after{display:none}
.acc-ico{position:relative;width:20px;height:20px;flex:0 0 20px;margin-left:auto}
.acc-ico::before,.acc-ico::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s ease}
.acc-ico::before{left:0;top:9px;width:20px;height:2px}
.acc-ico::after{left:9px;top:0;width:2px;height:20px}
.accordion-button:not(.collapsed) .acc-ico::after{transform:scaleY(0)}
.accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text)}
.accordion-body p+p{margin-top:10px}

/* ============ CTA ============ */
.cta-band{
  position:relative;background:var(--primary);border-radius:var(--r-xl);
  padding:48px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:32px;top:50%;transform:translateY(-50%);
  width:180px;height:180px;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.35) 1.5px,transparent 1.5px);
  background-size:16px 16px;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.82);font-size:15px;max-width:560px}
.cta-band .btn-invert{position:relative;z-index:1;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{margin-left:var(--side-w);background:var(--footer);color:#B9C7D6;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);color:#fff}
.footer-brand strong{color:#fff;font-size:15px}
.footer-brand em{display:block;font-style:normal;font-size:11px;color:#7E8FA3}
.footer-desc{font-size:14px;line-height:1.85;color:#93A4B6;max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.5px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:#B9C7D6}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:#93A4B6}
.footer-contact a{color:#B9C7D6}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7E8FA3;
}
.footer-bottom a{color:#9FB0C2}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .wrap{max-width:1100px}
}
@media (max-width:1199.98px){
  :root{--side-w:220px}
  .hero-grid{gap:40px}
  .case-grid{grid-template-columns:1fr}
}
@media (max-width:991.98px){
  .side{
    position:sticky;top:0;left:auto;
    width:100%;height:auto;
    border-right:0;border-bottom:1px solid var(--border);
    box-shadow:0 2px 10px rgba(22,50,80,.06);
  }
  .side-head{padding:10px 20px}
  .side-body{flex:none;max-height:calc(100vh - 64px);overflow-y:auto;padding-bottom:20px}
  .side-foot{margin-top:16px;border-top:1px solid var(--border)}
  .side-cta{margin:8px 20px 0}
  .site-main,.site-footer{margin-left:0}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .float-card{left:16px;bottom:16px}
  .feat-row{grid-template-columns:1fr;gap:28px;margin-top:56px}
  .feat-row.rev .feat-media{order:0}
  .sec{padding:64px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .cta-band::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cms-big{grid-template-columns:1fr}
  .cms-big .cms-thumb img{min-height:0;aspect-ratio:16/10}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .wrap{padding:0 20px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:16px}
  .price-table{display:none}
  .price-mobile{display:grid;gap:20px}
  .pm-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-l);padding:26px 22px;box-shadow:var(--sh-1);position:relative}
  .pm-card.featured{border-color:var(--primary);background:#FBFDFF}
  .pm-card .pt-price{margin:6px 0}
  .pm-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;font-size:14px}
  .pm-list li{position:relative;padding-left:20px;color:var(--text)}
  .pm-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--primary)}
  .pm-card .btn-main,.pm-card .btn-ghost{width:100%;margin-top:20px}
  .cms-grid{grid-template-columns:1fr}
  .cms-big{grid-column:span 1}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .case-metrics{gap:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:575.98px){
  .hero{padding:36px 0 48px}
  .float-card{display:none}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn-main,.hero-btns .btn-ghost{width:100%}
  .scene-card{flex:0 0 82%}
  .cta-band{padding:30px 22px}
  .logo-grid{grid-template-columns:1fr 1fr}
}

/* roulang page: category1 */
:root{
  --primary:#1668A8;
  --primary-hover:#12578E;
  --primary-active:#0E4A7A;
  --accent:#F08A24;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --border:#E3E9F0;
  --title:#16232F;
  --text:#3C4B5A;
  --muted:#7A8899;
  --soft:#E9F2FA;
  --footer:#0E2136;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --sh-1:0 4px 16px rgba(22,50,80,.06);
  --sh-2:0 10px 28px rgba(22,50,80,.10);
  --sh-3:0 6px 20px rgba(22,50,80,.12);
  --side-w:248px;
  --top-h:60px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0 0 14px}
h1,h2,h3,h4{margin:0;color:var(--title);line-height:1.32;font-weight:700}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ---------- 侧栏导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;
  width:var(--side-w);
  height:100vh;
  background:#fff;
  border-right:1px solid var(--border);
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  gap:6px;
  overflow-y:auto;
  z-index:1030;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:11px;
  background:var(--soft);
  color:var(--primary);
  flex:0 0 auto;
}
.side-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:4px 6px 18px;
  border-bottom:1px solid var(--border);
  margin-bottom:14px;
}
.side-brand strong{display:block;font-size:16px;color:var(--title);line-height:1.3}
.side-brand em{display:block;font-style:normal;font-size:12px;color:var(--muted);margin-top:2px}
.side-menu{display:flex;flex-direction:column;gap:2px}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  height:46px;
  padding:0 14px 0 20px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  transition:background .22s ease,color .22s ease;
}
.side-link:hover{background:var(--soft);color:var(--primary)}
.side-link.active{
  background:var(--soft);
  color:var(--primary);
  font-weight:600;
}
.side-link.active::before{
  content:"";
  position:absolute;
  left:6px;top:11px;bottom:11px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
}
.side-cta{
  margin:20px 0 8px;
  width:100%;
}
.side-foot{
  margin-top:auto;
  padding-top:18px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.side-foot strong{color:var(--title);font-size:13px;font-weight:600;display:block;margin-bottom:4px}
.side-foot a{color:var(--primary)}

/* ---------- 按钮 ---------- */
.btn-main,.btn-ghost,.btn-invert{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:12px 26px;
  border-radius:10px;
  font-size:16px;
  font-weight:600;
  border:0;
  cursor:pointer;
  transition:background .25s ease,color .25s ease,transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-main{background:var(--primary);color:#fff;box-shadow:var(--sh-1)}
.btn-main:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-main:active{background:var(--primary-active);transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--soft);color:var(--primary-hover);transform:translateY(-1px)}
.btn-invert{background:#fff;color:var(--primary)}
.btn-invert:hover{background:#EAF3FB;color:var(--primary-active);transform:translateY(-1px)}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  min-height:44px;
}
.link-more svg{transition:transform .25s ease}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:var(--top-h);
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 10px rgba(22,50,80,.05);
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  z-index:1040;
}
.mobile-brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--title);font-size:15px}
.menu-toggle{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:#fff;
  border:1px solid var(--border);
  border-radius:10px;
  color:var(--title);
}

/* ---------- 主区域 ---------- */
.site-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:22px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary);text-decoration:underline}
.crumb .sep{color:#C3CEDB}
.crumb .current{color:var(--primary);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{
  background:
    linear-gradient(180deg,rgba(245,247,250,.92),rgba(245,247,250,.98)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--border);
  padding:44px 0 56px;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.32fr 1fr;
  gap:48px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-sm);
  background:var(--soft);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.3px;
}
.hero-copy h1{
  font-size:clamp(30px,4vw,44px);
  line-height:1.25;
  margin:16px 0 14px;
}
.hero-copy h1 .hl{
  position:relative;
  display:inline-block;
  color:var(--primary);
}
.hero-copy h1 .hl::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:6px;
  border-radius:4px;
  background:rgba(240,138,36,.22);
}
.lede{font-size:18px;color:var(--text);max-width:560px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:22px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--border);
  color:var(--text);
  font-size:13px;
}
.chip svg{color:var(--primary)}
.hero-figure{
  position:relative;
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--sh-2);
  background:#fff;
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-float{
  position:absolute;
  left:16px;bottom:16px;
  background:#fff;
  border-radius:var(--r-md);
  box-shadow:var(--sh-3);
  padding:14px 16px;
  display:flex;
  gap:22px;
}
.hero-float .fig{font-size:20px;font-weight:700;color:var(--accent);line-height:1.2}
.hero-float .cap{font-size:12px;color:var(--muted);margin-top:2px}

/* ---------- 文档布局 ---------- */
.doc-layout{
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  gap:56px;
  padding-top:64px;
  padding-bottom:72px;
  align-items:start;
}
.toc{
  position:sticky;
  top:32px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:20px 18px;
  box-shadow:var(--sh-1);
}
.toc-title{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.5px;margin:0 0 12px}
.toc-link{
  display:block;
  padding:8px 10px 8px 12px;
  border-left:2px solid transparent;
  border-radius:6px;
  font-size:14px;
  color:var(--text);
  transition:.2s ease;
}
.toc-link:hover{color:var(--primary);background:var(--soft)}
.toc-link.active{color:var(--primary);border-left-color:var(--primary);background:var(--soft);font-weight:600}
.toc-note{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.doc-body > section{margin-bottom:64px}
.doc-body > section:last-child{margin-bottom:0}
.section-head{margin-bottom:22px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3}
.section-head p{font-size:16px;color:var(--muted);margin:10px 0 0;max-width:720px}
.section-head .kicker{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-sm);
  background:var(--soft);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  margin-bottom:12px;
}
.text-block p{font-size:16.5px;line-height:1.9;margin-bottom:16px}
.text-block strong{color:var(--title)}

/* 信息小卡 */
.info-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.info-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,104,168,.3)}
.info-card .num{font-size:22px;font-weight:700;color:var(--accent);line-height:1.2}
.info-card h3{font-size:16px;margin:8px 0 6px}
.info-card p{font-size:14px;color:var(--muted);margin:0}

/* 场景清单 */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.scene-item{
  display:flex;
  gap:14px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:18px 20px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,104,168,.3)}
.scene-icon{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:11px;
  background:var(--soft);
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.scene-item strong{display:block;font-size:16px;color:var(--title);margin-bottom:4px}
.scene-item p{font-size:14px;color:var(--muted);margin:0}

/* 对比表 */
.table-shell{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  overflow-x:auto;
  box-shadow:var(--sh-1);
}
table.compare{width:100%;border-collapse:collapse;min-width:680px}
table.compare th,table.compare td{
  padding:16px 20px;
  font-size:15px;
  text-align:left;
  border-bottom:1px solid var(--border);
  vertical-align:top;
}
table.compare thead th{
  background:#F7FAFD;
  color:var(--title);
  font-size:14px;
  font-weight:600;
}
table.compare tbody th{color:var(--title);font-weight:600;background:#fff;width:150px}
table.compare tbody tr:last-child th,
table.compare tbody tr:last-child td{border-bottom:0}
table.compare .is-best{background:var(--soft);color:var(--primary);font-weight:600}
table.compare thead .is-best{color:var(--primary)}
.table-note{font-size:13px;color:var(--muted);margin-top:12px}

/* 步骤 */
.steps{position:relative;margin-top:6px}
.step{position:relative;padding:0 0 34px 68px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";
  position:absolute;
  left:21px;top:44px;bottom:2px;
  width:2px;
  background:linear-gradient(180deg,rgba(22,104,168,.35),rgba(22,104,168,.06));
}
.step:last-child::before{display:none}
.step-num{
  position:absolute;
  left:0;top:0;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--soft);
  border:1px solid rgba(22,104,168,.25);
  color:var(--primary);
  font-weight:700;
  font-size:15px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.step h3{font-size:18px;margin-bottom:6px}
.step p{font-size:15px;color:var(--muted);margin:0;max-width:660px}

/* FAQ */
.faq{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:6px 24px;
  box-shadow:var(--sh-1);
}
.faq .accordion-item{border:0;border-bottom:1px solid var(--border);background:transparent}
.faq .accordion-item:last-child{border-bottom:0}
.faq .accordion-button{
  background:transparent;
  color:var(--title);
  font-size:17px;
  font-weight:600;
  padding:20px 4px 20px 0;
  border-radius:0;
  box-shadow:none;
}
.faq .accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none}
.faq .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq .accordion-button::after{
  content:"+";
  background-image:none;
  width:auto;height:auto;
  font-size:22px;
  line-height:1;
  color:var(--primary);
  transition:transform .25s ease;
  display:flex;
  align-items:center;
  justify-content:center;
}
.faq .accordion-button:not(.collapsed)::after{content:"−"}
.faq .accordion-body{
  padding:0 24px 22px 16px;
  border-left:3px solid var(--primary);
  font-size:15px;
  line-height:1.85;
  color:var(--text);
}
.faq .accordion-body p:last-child{margin-bottom:0}

/* CTA */
.cta-wrap{padding:0 0 88px}
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--primary);
  border-radius:var(--r-lg);
  padding:46px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  box-shadow:var(--sh-2);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-30px;top:-30px;
  width:220px;height:220px;
  background-image:radial-gradient(rgba(255,255,255,.28) 2px,transparent 2px);
  background-size:18px 18px;
  opacity:.6;
  transform:rotate(8deg);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);position:relative}
.cta-band p{color:rgba(255,255,255,.86);margin:10px 0 0;font-size:16px;position:relative;max-width:620px}
.cta-band .btn-invert{position:relative;z-index:1}

/* 页脚 */
.site-footer{background:var(--footer);color:#A9BCD0;padding:64px 0 28px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{display:block;color:#fff;font-size:16px;line-height:1.3}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#8FA6BC;margin-top:2px}
.site-footer .brand-mark{background:rgba(255,255,255,.08);color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:#A9BCD0;max-width:360px;margin:0}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px}
.footer-links a{display:block;font-size:14px;color:#A9BCD0;padding:5px 0;transition:color .2s ease}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:14px}
.footer-contact a{color:#D6E3F0}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:#8FA6BC;
}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .wrap{max-width:1100px}
}
@media (max-width:1199.98px){
  .doc-layout{grid-template-columns:206px minmax(0,1fr);gap:40px}
  .info-row{grid-template-columns:1fr 1fr}
}
@media (max-width:991.98px){
  .mobile-bar{display:flex}
  .side-nav{
    top:var(--top-h);
    left:0;right:0;
    width:100%;
    height:auto;
    max-height:calc(100vh - var(--top-h));
    border-right:0;
    border-bottom:1px solid var(--border);
    box-shadow:var(--sh-2);
    padding:18px 20px 24px;
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .side-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .side-link{height:48px;border-radius:0;padding-left:16px}
  .side-link.active{background:var(--soft)}
  .site-main{margin-left:0;padding-top:var(--top-h)}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-figure{order:2}
  .doc-layout{grid-template-columns:1fr;gap:36px;padding-top:48px;padding-bottom:56px}
  .toc{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
  .toc-title,.toc-note{grid-column:1 / -1}
  .scene-grid{grid-template-columns:1fr}
  .cta-wrap{padding-bottom:64px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .wrap{padding:0 20px}
  .page-hero{padding:32px 0 44px}
  .hero-copy h1{font-size:clamp(26px,6.4vw,34px)}
  .lede{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .hero-float{display:none}
  .info-row{grid-template-columns:1fr}
  .doc-body > section{margin-bottom:52px}
  .faq{padding:4px 18px}
  .faq .accordion-button{font-size:16px}
  .faq .accordion-body{padding-right:8px}
  .step{padding-left:58px}
  .step-num{width:38px;height:38px;font-size:14px}
  .step::before{left:18px;top:40px}
  .footer-grid{grid-template-columns:1fr}
  .cta-band .btn-invert{width:100%}
}
@media (max-width:575.98px){
  .toc{grid-template-columns:1fr}
  .cta-band{padding:30px 22px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: article */
:root{
  --primary:#1668A8;
  --primary-h:#12578E;
  --primary-a:#0E4A7A;
  --accent:#F08A24;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --line:#E3E9F0;
  --ink:#16232F;
  --text:#3C4B5A;
  --muted:#7A8899;
  --tint:#E9F2FA;
  --footer:#0E2136;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:18px;
  --sh:0 4px 16px rgba(22,50,80,.06);
  --sh-h:0 10px 28px rgba(22,50,80,.10);
  --sh-f:0 6px 20px rgba(22,50,80,.12);
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .25s ease,border-color .25s ease}
a:hover{color:var(--primary-h)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:#fff;
  border-right:1px solid var(--line);
  padding:24px 16px;
  display:flex;
  flex-direction:column;
  gap:20px;
  overflow-y:auto;
  z-index:1040;
}
.side-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--primary)}
.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);
  background:var(--tint);
  color:var(--primary);
  border:1px solid rgba(22,104,168,.16);
}
.brand-text{display:flex;flex-direction:column;line-height:1.35}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  color:var(--primary);
  cursor:pointer;
}
.side-menu{display:flex;flex-direction:column;gap:20px;flex:1 1 auto}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;
  display:flex;align-items:center;
  min-height:46px;
  padding:0 20px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  border-left:3px solid transparent;
}
.side-link:hover{background:var(--tint);color:var(--primary)}
.side-link.active{
  background:var(--tint);
  color:var(--primary);
  border-left-color:var(--primary);
  font-weight:600;
}
.side-cta{
  display:flex;align-items:center;justify-content:center;
  width:100%;
  min-height:48px;
  padding:12px 20px;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:var(--sh);
}
.side-cta:hover{background:var(--primary-h);color:#fff;transform:translateY(-1px)}
.side-info{
  margin-top:auto;
  padding:16px;
  border-radius:var(--r-md);
  background:#F8FAFD;
  border:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.side-info-title{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.side-info a{color:var(--primary)}

/* ---------- 内容框架 ---------- */
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.main{flex:1 1 auto}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:32px 0 0;
  font-size:13px;
  color:var(--muted);
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--primary);text-decoration:underline}
.crumb-sep{color:#B9C4D1}
.crumb-current{
  color:var(--primary);
  max-width:520px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,780px) minmax(0,1fr);
  gap:56px;
  padding:28px 0 0;
}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--line)}
.cat-tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--r-sm);
  background:var(--tint);
  color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.3px;
}
.article-title{
  margin:16px 0 14px;
  font-size:clamp(26px,3.2vw,38px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.2px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
}
.meta-row .dot{color:#C4CFDB}
.meta-chip{
  display:inline-flex;align-items:center;
  padding:2px 10px;
  border-radius:var(--r-sm);
  background:#F1F5F9;
  font-size:12px;
  color:var(--text);
}

/* ---------- 正文 ---------- */
.article-body{
  margin-top:32px;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:14px;
  font-size:22px;
  font-weight:700;
  line-height:1.45;
  color:var(--ink);
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;
  width:4px;border-radius:2px;background:var(--primary);
}
.article-body h3{
  margin:28px 0 12px;
  font-size:19px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600;color:var(--ink)}
.article-body ul{margin:0 0 1.25em;padding-left:20px}
.article-body ul li{position:relative;padding-left:16px;margin-bottom:8px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.article-body ol{margin:0 0 1.25em;padding-left:24px;list-style:decimal}
.article-body ol li{margin-bottom:8px}
.article-body ol li::marker{color:var(--primary);font-weight:600}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(22,104,168,.35)}
.article-body a:hover{color:var(--primary-h);border-bottom-color:var(--primary-h)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:rgba(22,104,168,.06);
  border-left:3px solid var(--primary);
  border-radius:var(--r-md);
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md)}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:8px;font-size:13px;color:var(--muted);text-align:center}
.article-body table{
  width:100%;margin:22px 0;
  border:1px solid var(--line);
  border-collapse:separate;
  border-spacing:0;
  border-radius:var(--r-md);
  overflow:hidden;
  font-size:15px;
}
.article-body th{background:var(--tint);color:var(--ink);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:#FAFCFE}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* 空态 */
.empty-state{
  padding:48px 32px;
  text-align:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-lg);
  background:var(--tint);
  color:var(--primary);
}
.empty-state h2{
  padding:0;margin:0 0 12px;font-size:22px;color:var(--ink);
}
.empty-state h2::before{display:none}
.empty-state p{margin:0 auto 24px;max-width:520px;color:var(--muted);font-size:15px}

/* ---------- 标签 ---------- */
.tag-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:40px;padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-label{font-size:13px;color:var(--muted)}
.tag{
  display:inline-flex;align-items:center;
  min-height:32px;padding:4px 14px;
  border-radius:var(--r-sm);
  background:var(--tint);
  color:var(--primary);
  font-size:13px;
  border:1px solid rgba(22,104,168,.12);
}
.tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- 上一篇 / 下一篇 ---------- */
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  margin-top:32px;
}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;
  padding:20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.post-nav-item:hover{border-color:rgba(22,104,168,.35);box-shadow:var(--sh-h);transform:translateY(-3px)}
.post-nav-item .pn-dir{font-size:13px;color:var(--muted)}
.post-nav-item strong{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.post-nav-item.next{text-align:right;align-items:flex-end}

/* ---------- 右侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:20px}
.article-side .side-card{
  padding:20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh);
}
.side-card,.toc-card{position:relative}
.article-side .sticky-wrap{position:sticky;top:32px;display:flex;flex-direction:column;gap:20px}
.card-title{
  font-size:15px;font-weight:700;color:var(--ink);
  padding-bottom:12px;margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:flex;align-items:center;
  min-height:40px;padding:0 12px;
  border-radius:var(--r-sm);
  font-size:14px;color:var(--text);
  border-left:3px solid transparent;
}
.toc-link:hover{background:var(--tint);color:var(--primary)}
.toc-link.current{color:var(--primary);background:var(--tint);border-left-color:var(--primary);font-weight:600}
.mini-post{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
}
.mini-post:last-child{border-bottom:0;padding-bottom:0}
.mini-post:first-of-type{padding-top:0}
.mini-thumb{
  flex:0 0 auto;width:64px;height:48px;border-radius:var(--r-sm);overflow:hidden;background:var(--tint);
}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-body{display:flex;flex-direction:column;gap:4px}
.mini-body strong{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.mini-body span{font-size:12px;color:var(--muted)}
.mini-post:hover strong{color:var(--primary)}
.cta-card{background:linear-gradient(180deg,#fff 0%,#F7FAFD 100%)}
.cta-card p{font-size:14px;color:var(--muted);margin-bottom:16px}
.btn-block{display:flex;width:100%;justify-content:center}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 26px;
  border-radius:10px;
  background:var(--primary);
  color:#fff;
  font-size:15px;font-weight:600;
  border:0;
  cursor:pointer;
  transition:background .25s ease,transform .25s ease,box-shadow .25s ease;
}
.btn-main:hover{background:var(--primary-h);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-h)}
.btn-main:active{background:var(--primary-a);transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:12px 26px;
  border-radius:10px;
  background:#fff;
  color:var(--primary);
  font-size:15px;font-weight:600;
  border:1.5px solid var(--primary);
  cursor:pointer;
  transition:background .25s ease,transform .25s ease,color .25s ease;
}
.btn-ghost:hover{background:var(--tint);color:var(--primary-h);transform:translateY(-1px)}
.btn-invert{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:12px 26px;
  border-radius:10px;
  background:#fff;color:var(--primary);
  font-size:15px;font-weight:600;
  white-space:nowrap;
}
.btn-invert:hover{background:#F2F7FC;color:var(--primary-h);transform:translateY(-1px)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--primary);
}
.text-link svg{transition:transform .25s ease}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 板块 ---------- */
.section{padding:72px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.section-head h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;color:var(--ink);line-height:1.35;
}
.section-head p{font-size:15px;color:var(--muted);margin-top:6px}

/* ---------- 内容卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:rgba(22,104,168,.3)}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--tint)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.badge-cat{
  position:absolute;top:12px;left:12px;
  display:inline-flex;align-items:center;
  height:26px;padding:0 10px;
  border-radius:var(--r-sm);
  background:rgba(22,104,168,.85);
  color:#fff;font-size:12px;font-weight:600;
}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.post-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-desc{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:12px;
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  border-top:1px dashed var(--line);
}
.post-foot .arrow{margin-left:auto;color:var(--primary)}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md) !important;
  margin-bottom:12px;
  overflow:hidden;
}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  position:relative;
  width:100%;
  padding:18px 48px 18px 20px;
  background:#fff;
  color:var(--ink);
  font-size:17px;font-weight:600;
  line-height:1.55;
  text-align:left;
  border:0;
  box-shadow:none;
}
.faq-accordion .accordion-button::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;
  width:3px;border-radius:0 3px 3px 0;background:transparent;transition:background .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--tint);color:var(--primary);box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed)::before{background:var(--primary)}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-2px}
.faq-accordion .accordion-button::after{
  content:"+";
  position:absolute;right:20px;top:50%;
  transform:translateY(-50%);
  margin:0;
  width:auto;height:auto;
  background-image:none !important;
  color:var(--primary);
  font-size:22px;font-weight:400;line-height:1;
  transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.faq-accordion .accordion-body{
  padding:0 24px 22px 20px;
  font-size:15px;line-height:1.85;color:var(--text);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  margin-top:72px;
  padding:44px 48px;
  border-radius:var(--r-xl);
  background:var(--primary);
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4;color:#fff}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.82)}
.cta-dots{
  position:absolute;right:-10px;top:-10px;width:220px;height:160px;
  background-image:radial-gradient(rgba(255,255,255,.28) 1.5px,transparent 1.5px);
  background-size:16px 16px;
  pointer-events:none;
}
.cta-band .btn-invert{position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--footer);
  color:#B9C9DA;
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.footer-brand strong{font-size:16px;font-weight:700;display:block}
.footer-brand em{font-style:normal;display:block;font-size:12px;color:#8FA6BE}
.footer-desc{font-size:14px;line-height:1.8;color:#9DB0C4;max-width:360px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#B9C9DA;font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#9DB0C4}
.footer-contact a{color:#B9C9DA}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:40px;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#7E93AA;
}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .wrap{max-width:1100px}
}
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-side{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .side-nav{
    position:sticky;top:0;left:auto;right:auto;bottom:auto;
    width:100%;height:auto;
    padding:12px 20px;
    border-right:0;
    border-bottom:1px solid var(--line);
    box-shadow:0 2px 12px rgba(22,50,80,.06);
    overflow:visible;
  }
  .nav-toggle{display:inline-flex}
  .side-menu{padding-top:14px;margin-top:14px;border-top:1px solid var(--line);gap:16px}
  .page{margin-left:0}
  .wrap{padding:0 20px}
  .crumbs{padding-top:24px}
  .article-layout{padding-top:20px}
  .section{padding:56px 0 0}
  .cta-band{flex-direction:column;align-items:flex-start;text-align:left;padding:32px 28px}
  .cta-band .btn-invert{width:100%}
  .site-footer{margin-top:64px}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .article-body{font-size:16px}
  .article-title{font-size:24px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav-item.next{text-align:left;align-items:flex-start}
  .post-nav-item.next .pn-dir{order:2}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px}
  .article-head{padding-bottom:20px}
  .btn-main,.btn-ghost{width:100%}
  .cta-band{padding:28px 20px}
  .faq-accordion .accordion-button{font-size:16px;padding:16px 44px 16px 18px}
}

/* roulang page: category2 */
:root{
  --primary:#1668A8;--primary-hover:#12578E;--primary-active:#0E4A7A;
  --accent:#F08A24;
  --bg:#F5F7FA;--card:#FFFFFF;--border:#E3E9F0;
  --title:#16232F;--text:#3C4B5A;--muted:#7A8899;--soft:#E9F2FA;
  --deep:#0E2136;
  --r-sm:8px;--r-md:12px;--r-lg:18px;
  --sh-1:0 4px 16px rgba(22,50,80,.06);
  --sh-2:0 10px 28px rgba(22,50,80,.10);
  --sh-3:0 6px 20px rgba(22,50,80,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Inter",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{color:var(--title);margin:0;line-height:1.3;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

/* ============ 框架布局 ============ */
.shell{display:flex;min-height:100vh;align-items:flex-start}
.sidebar{
  position:sticky;top:0;flex:0 0 248px;width:248px;height:100vh;
  background:#fff;border-right:1px solid var(--border);
  overflow-y:auto;z-index:30;
}
.side-inner{display:flex;flex-direction:column;gap:22px;min-height:100%;padding:22px 18px 26px}
.side-brand{display:flex;align-items:center;gap:12px;padding:4px 4px 16px;border-bottom:1px solid var(--border)}
.brand-mark{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--soft);color:var(--primary);border:1px solid rgba(22,104,168,.16);
}
.brand-text strong{display:block;font-size:15px;color:var(--title);letter-spacing:.2px;line-height:1.3}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--muted);margin-top:3px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;height:46px;padding:0 14px 0 20px;
  border-radius:10px;font-size:15px;color:var(--text);transition:background-color .22s ease,color .22s ease;
}
.side-link:hover{background:var(--soft);color:var(--primary)}
.side-link.active{background:var(--soft);color:var(--primary);font-weight:600}
.side-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.side-cta{width:100%}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);line-height:1.9}
.side-foot a{color:var(--primary)}
.side-foot a:hover{text-decoration:underline}

.content{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;min-height:100vh}
main{flex:1 1 auto}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ============ 移动端顶栏 ============ */
.topbar{display:none}
.mobile-panel{display:none}
.nav-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);border-radius:10px;color:var(--primary);cursor:pointer;
}
.nav-toggle:hover{background:var(--soft)}
.mobile-nav{display:flex;flex-direction:column;padding:8px 20px 18px;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--sh-1)}
.mobile-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 4px;font-size:15.5px;color:var(--text);
  border-bottom:1px solid var(--border);
}
.mobile-nav a:last-of-type{border-bottom:0}
.mobile-nav a.active{color:var(--primary);font-weight:600}
.mobile-nav .btn{margin-top:14px;width:100%}
@media (min-width:992px){
  .topbar,.mobile-panel{display:none !important}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:10px;border:1.5px solid transparent;
  font-size:16px;font-weight:600;line-height:1;text-decoration:none;cursor:pointer;
  transition:transform .25s ease,background-color .25s ease,color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.btn-sm{height:42px;padding:0 20px;font-size:15px}
.btn-primary{background-color:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover,.btn-primary:focus{background-color:var(--primary-hover);border-color:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(22,104,168,.24)}
.btn-primary:active{background-color:var(--primary-active);border-color:var(--primary-active);transform:translateY(0)}
.btn-outline{background-color:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover,.btn-outline:focus{background-color:var(--soft);color:var(--primary-hover);transform:translateY(-1px)}
.btn-invert{background-color:#fff;border-color:#fff;color:var(--primary)}
.btn-invert:hover,.btn-invert:focus{background-color:#EAF3FB;color:var(--primary-active);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary)}
.link-arrow svg{transition:transform .25s ease}
.link-arrow:hover{color:var(--primary-hover)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:22px 0 0;font-size:13px;color:var(--muted)}
.crumb a:hover{color:var(--primary);text-decoration:underline}
.crumb .sep{color:#C3CDD8}
.crumb .cur{color:var(--primary);font-weight:600}

/* ============ Hero ============ */
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:26px 0 56px}
.eyebrow{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-sm);
  background:var(--soft);color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.4px;
}
.hero h1{font-size:clamp(30px,4vw,44px);line-height:1.25;margin-top:16px}
.hero h1 mark{background:none;color:var(--primary);padding:0}
.hero-sub{margin-top:16px;font-size:18px;line-height:1.75;color:var(--text);max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--border);font-size:13px;color:var(--text);
}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--sh-2);aspect-ratio:4/3;background:#fff}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;left:20px;bottom:20px;display:flex;gap:22px;
  padding:14px 18px;background:#fff;border-radius:var(--r-md);box-shadow:var(--sh-3);
}
.hero-float div{line-height:1.2}
.hero-float strong{display:block;font-size:22px;color:var(--primary);font-weight:700}
.hero-float span{display:block;font-size:12px;color:var(--muted);margin-top:4px}

/* ============ 区块 ============ */
.section{padding:64px 0}
.section-tight{padding:48px 0}
.sec-head{max-width:780px;margin-bottom:32px}
.sec-head h2{font-size:clamp(24px,3vw,32px)}
.sec-head p{margin-top:12px;font-size:16px;color:var(--muted)}
.divider{height:1px;background:var(--border);border:0;margin:0}

/* ============ 筛选条（静态外观） ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--sh-1);
}
.filter-bar .label{font-size:13px;color:var(--muted);margin-right:6px}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--text);font-size:14px;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease;
}
.chip.is-on{background:var(--soft);border-color:rgba(22,104,168,.35);color:var(--primary);font-weight:600}

/* ============ 问答卡网格 ============ */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.qa-card{
  position:relative;background:var(--card);border:1px solid var(--border);border-radius:16px;
  padding:24px 26px 24px 30px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.qa-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--primary);
}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,104,168,.3)}
.qa-card h3{font-size:18px;line-height:1.5;display:flex;gap:10px;align-items:flex-start}
.qa-card h3 .q{
  flex:0 0 auto;font-size:13px;font-weight:700;color:var(--accent);
  border:1px solid rgba(240,138,36,.35);background:rgba(240,138,36,.08);
  border-radius:6px;padding:1px 6px;margin-top:3px;letter-spacing:.5px;
}
.qa-card p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text)}
.qa-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-sm);
  background:var(--soft);color:var(--primary);font-size:12px;font-weight:600;
}
.tag-warn{background:rgba(240,138,36,.10);color:#B4620F}

/* ============ 设备适配图文块 ============ */
.device-block{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:40px;align-items:center;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  padding:32px;
}
.device-media{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--border);aspect-ratio:16/10}
.device-media img{width:100%;height:100%;object-fit:cover}
.device-list{display:flex;flex-direction:column;gap:18px}
.device-item{display:flex;gap:14px}
.device-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--soft);color:var(--primary);border:1px solid rgba(22,104,168,.14);
}
.device-item h3{font-size:17px}
.device-item p{margin-top:6px;font-size:15px;line-height:1.8;color:var(--text)}

/* ============ 反馈渠道卡 ============ */
.channel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.channel-card{
  background:#fff;border:1px solid var(--border);border-radius:16px;padding:26px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(22,104,168,.3)}
.channel-card h3{font-size:18px;display:flex;align-items:center;gap:10px}
.channel-card p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text)}
.channel-card .big{display:block;margin-top:14px;font-size:19px;font-weight:700;color:var(--primary);word-break:break-all}

/* ============ 信息提示带 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--soft);border:1px solid rgba(22,104,168,.16);border-radius:16px;padding:24px 26px;
}
.notice-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:#fff;color:var(--primary);box-shadow:var(--sh-1);
}
.notice h3{font-size:17px}
.notice p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--text)}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:var(--primary);border-radius:20px;padding:48px 48px;color:#fff;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin-top:12px;font-size:16px;color:rgba(255,255,255,.86);max-width:56ch}
.cta-band .dots{
  position:absolute;right:-30px;bottom:-40px;width:240px;height:240px;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.45) 1.5px,transparent 1.5px);
  background-size:14px 14px;pointer-events:none;
}
.cta-band .btn{flex:0 0 auto;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{margin-top:72px;background:var(--deep);color:#B9C7D6;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.12);color:#8FC4EA}
.footer-brand strong{display:block;color:#fff;font-size:16px}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#8FA3B8;margin-top:3px}
.footer-desc{font-size:14px;line-height:1.9;color:#9DB0C4;max-width:38ch}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:#B9C7D6}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:#B9C7D6}
.footer-contact a{color:#8FC4EA}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:#8FA3B8;
}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .wrap{max-width:1100px}
}
@media (max-width:1199.98px){
  .sidebar{flex:0 0 220px;width:220px}
  .wrap{padding:0 28px}
  .hero{gap:36px}
  .device-block{gap:28px;padding:28px}
}
@media (max-width:991.98px){
  .sidebar{display:none}
  .topbar{
    display:flex;position:sticky;top:0;z-index:50;align-items:center;justify-content:space-between;
    height:60px;padding:0 20px;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--sh-1);
  }
  .topbar-brand{display:flex;align-items:center;gap:10px}
  .topbar-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:10px}
  .topbar-brand strong{font-size:15px;color:var(--title);line-height:1.2}
  .topbar-brand em{display:block;font-style:normal;font-size:11.5px;color:var(--muted)}
  .wrap{padding:0 24px}
  .hero{grid-template-columns:1fr;gap:32px;padding:20px 0 44px}
  .hero-media{order:2}
  .hero-float{left:14px;bottom:14px;padding:12px 14px;gap:18px}
  .qa-grid{grid-template-columns:1fr}
  .device-block{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767.98px){
  .section{padding:52px 0}
  .section-tight{padding:40px 0}
  .hero-sub{font-size:16.5px}
  .hero h1{font-size:clamp(27px,7vw,34px)}
  .sec-head h2{font-size:22px}
  .qa-card{padding:20px 20px 20px 24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding-top:44px;margin-top:56px}
}
@media (max-width:575.98px){
  .wrap{padding:0 20px}
  .hero-actions{flex-direction:column;gap:12px}
  .hero-actions .btn{width:100%}
  .hero-float{display:none}
  .filter-bar{padding:14px}
  .chip{height:34px;padding:0 13px;font-size:13.5px}
  .device-block{padding:20px}
  .notice{flex-direction:column;gap:12px;padding:20px}
  .btn{width:100%}
  .cta-band{padding:32px 22px;border-radius:16px}
  .footer-bottom{flex-direction:column}
}