/* roulang page: index */
:root{
  --kk-main:#2E6BE6;
  --kk-main-dark:#1B4FC0;
  --kk-main-soft:rgba(46,107,230,.12);
  --kk-mist:#E8EEF6;
  --kk-accent:#FF8A3D;
  --kk-ink:#17202E;
  --kk-ink2:#4A5768;
  --kk-ink3:#8A96A8;
  --kk-line:#E4EAF2;
  --kk-bg:#F6F8FB;
  --kk-card:#FFFFFF;
  --kk-deep:#101B2E;
  --kk-r-card:14px;
  --kk-r-btn:10px;
  --kk-r-input:10px;
  --kk-r-hero:20px;
  --kk-r-badge:999px;
  --kk-sh:0 1px 2px rgba(23,32,46,.04), 0 12px 28px -12px rgba(23,32,46,.14);
  --kk-sh-hover:0 18px 40px -16px rgba(23,32,46,.18);
  --kk-sp-1:4px;
  --kk-sp-2:8px;
  --kk-sp-3:12px;
  --kk-sp-4:16px;
  --kk-sp-5:24px;
  --kk-sp-6:32px;
  --kk-sp-7:48px;
  --kk-sp-8:64px;
  --kk-sp-9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--kk-ink);
  background:var(--kk-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--kk-main);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
a:hover{color:var(--kk-main-dark)}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;color:var(--kk-ink);font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(46,107,230,.55);outline-offset:2px;border-radius:4px}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px}
@media screen and (min-width:1024px){.grid-container{padding-left:24px;padding-right:24px}}
.kk-section{padding:96px 0}
.kk-section-tight{padding:64px 0}
@media screen and (max-width:1023px){
  .kk-section{padding:72px 0}
  .kk-section-tight{padding:56px 0}
}
@media screen and (max-width:639px){
  .kk-section{padding:56px 0}
  .kk-section-tight{padding:44px 0}
}
.kk-h1{font-size:clamp(30px,3.4vw,52px);font-weight:700;line-height:1.22}
.kk-h2{font-size:30px;font-weight:700;line-height:1.3}
.kk-h3{font-size:20px;font-weight:600;line-height:1.4}
@media screen and (max-width:639px){
  .kk-h2{font-size:22px}
  .kk-h3{font-size:18px}
}
.kk-lead{font-size:16px;line-height:1.75;color:var(--kk-ink2)}
.kk-section-head{max-width:740px;margin-bottom:var(--kk-sp-7)}
.kk-section-head .kk-h2{margin-bottom:var(--kk-sp-3)}
.kk-eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--kk-main);text-transform:uppercase;margin-bottom:var(--kk-sp-3)}
/* header */
.kk-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--kk-line);box-shadow:0 2px 8px rgba(23,32,46,.05)}
.kk-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.kk-logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--kk-ink);letter-spacing:-.01em;flex:none}
.kk-logo:hover{color:var(--kk-ink)}
.kk-logo svg{width:24px;height:24px;flex:none}
.kk-menu{display:flex;align-items:center;gap:28px;margin:0}
.kk-menu li{list-style:none}
.kk-menu a{position:relative;display:inline-block;padding:6px 0;font-size:16px;font-weight:500;color:var(--kk-ink2)}
.kk-menu a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:transparent;transition:background .2s ease}
.kk-menu a:hover{color:var(--kk-main)}
.kk-menu a:hover::after{background:var(--kk-main)}
.kk-menu a.is-active{color:var(--kk-main);font-weight:600}
.kk-menu a.is-active::after{background:var(--kk-main)}
.kk-actions{display:flex;align-items:center;gap:12px;flex:none}
.kk-search{position:relative;display:flex;align-items:center}
.kk-search input{width:196px;height:36px;border-radius:999px;border:1px solid transparent;background:#F1F5FA;padding:0 38px 0 16px;font-size:14px;color:var(--kk-ink);transition:background .2s ease,border-color .2s ease,box-shadow .2s ease}
.kk-search input::placeholder{color:var(--kk-ink3)}
.kk-search input:focus{outline:none;background:#fff;border-color:var(--kk-main);box-shadow:0 0 0 4px var(--kk-main-soft)}
.kk-search i{position:absolute;right:14px;font-size:14px;color:var(--kk-ink3);pointer-events:none}
.kk-burger{display:none;width:40px;height:40px;border:1px solid var(--kk-line);border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer}
.kk-burger span{display:block;width:16px;height:1.5px;background:var(--kk-ink);border-radius:2px;position:relative}
.kk-burger span::before,.kk-burger span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--kk-ink);border-radius:2px}
.kk-burger span::before{top:-5px}
.kk-burger span::after{top:5px}
.kk-drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:120;transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);padding:20px;overflow-y:auto;box-shadow:-16px 0 40px -20px rgba(23,32,46,.3)}
.kk-drawer.is-open{transform:translateX(0)}
.kk-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.kk-drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--kk-line);background:#fff;cursor:pointer;color:var(--kk-ink2)}
.kk-drawer-nav a{display:block;line-height:48px;font-size:16px;font-weight:500;color:var(--kk-ink2);border-bottom:1px solid var(--kk-line)}
.kk-drawer-nav a.is-active{color:var(--kk-main);font-weight:600}
.kk-drawer-nav a:hover{color:var(--kk-main)}
.kk-drawer .kk-search{margin-top:20px}
.kk-drawer .kk-search input{width:100%}
.kk-drawer .kk-btn{width:100%;margin-top:12px}
.kk-mask{position:fixed;inset:0;background:rgba(16,27,46,.45);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:110}
.kk-mask.is-open{opacity:1;visibility:visible}
@media screen and (max-width:1023px){
  .kk-menu,.kk-actions{display:none}
  .kk-burger{display:flex}
  .kk-nav{height:56px}
}
/* buttons */
.kk-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 20px;border-radius:var(--kk-r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease}
.kk-btn-primary{background:var(--kk-main);color:#fff;box-shadow:0 10px 22px -12px rgba(46,107,230,.9)}
.kk-btn-primary:hover{background:var(--kk-main-dark);color:#fff;transform:translateY(-1px)}
.kk-btn-primary:active{transform:translateY(0);opacity:.9}
.kk-btn-ghost{background:#fff;color:var(--kk-ink);border-color:var(--kk-line)}
.kk-btn-ghost:hover{border-color:var(--kk-main);color:var(--kk-main);transform:translateY(-1px)}
.kk-btn-ghost:active{transform:translateY(0);opacity:.9}
.kk-btn-accent{background:var(--kk-accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,138,61,.9)}
.kk-btn-accent:hover{background:#EE7729;color:#fff;transform:translateY(-1px)}
.kk-btn-lg{height:46px;padding:0 28px;font-size:16px;border-radius:12px}
/* hero */
.kk-hero{background:#F2F6FC;border-bottom:1px solid var(--kk-line);display:flex;align-items:center;min-height:560px;padding:72px 0 80px;overflow:hidden}
.kk-hero-row{row-gap:40px}
.kk-tag{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;border-radius:var(--kk-r-badge);background:#fff;color:var(--kk-main);font-size:12px;font-weight:600;border:1px solid rgba(46,107,230,.22);margin-bottom:20px}
.kk-hero .kk-h1{margin-bottom:20px}
.kk-hero-sub{font-size:17px;line-height:1.7;color:var(--kk-ink2);max-width:480px}
.kk-hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.kk-hero-points{display:flex;flex-wrap:wrap;margin-top:36px}
.kk-hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--kk-ink2);padding:0 18px}
.kk-hero-points li:first-child{padding-left:0}
.kk-hero-points li+li{border-left:1px solid var(--kk-line)}
.kk-hero-points i{color:var(--kk-main);font-size:13px}
.kk-hero-media{position:relative}
.kk-hero-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--kk-r-hero);box-shadow:var(--kk-sh)}
.kk-float{position:absolute;background:#fff;border-radius:12px;padding:14px;box-shadow:var(--kk-sh);font-size:13px;color:var(--kk-ink2);line-height:1.4}
.kk-float strong{display:block;font-size:22px;font-weight:700;color:var(--kk-accent);font-variant-numeric:tabular-nums;line-height:1.2}
.kk-float-a{left:-16px;bottom:32px}
.kk-float-b{right:-16px;top:28px}
@media screen and (max-width:1023px){
  .kk-hero{min-height:0;padding:48px 0 56px}
  .kk-float-a{left:8px;bottom:16px}
  .kk-float-b{right:8px;top:16px}
}
@media screen and (max-width:639px){
  .kk-hero-points li{padding:0 12px;font-size:13px}
  .kk-float{padding:10px;font-size:12px}
  .kk-float strong{font-size:18px}
}
/* quick entries */
.kk-quick{padding:64px 0 8px}
.kk-quick-card{display:block;background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);padding:22px;box-shadow:var(--kk-sh);height:100%;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.kk-quick-card:hover{transform:translateY(-2px);box-shadow:var(--kk-sh-hover);border-color:rgba(46,107,230,.32);color:inherit}
.kk-quick-icon{width:40px;height:40px;border-radius:12px;background:var(--kk-mist);color:var(--kk-main);display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px}
.kk-quick-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.kk-quick-card:hover h3{color:var(--kk-main)}
.kk-quick-card p{font-size:14px;color:var(--kk-ink2);line-height:1.7}
.kk-quick-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:600;color:var(--kk-main)}
.kk-quick-card:hover .kk-quick-more i{transform:translateX(4px)}
.kk-quick-more i{transition:transform .2s ease}
.kk-quick-row{row-gap:24px}
/* feature rows */
.kk-feature-row{row-gap:40px;align-items:center}
.kk-feature-row+.kk-feature-row{margin-top:80px}
@media screen and (max-width:1023px){.kk-feature-row+.kk-feature-row{margin-top:56px}}
.kk-feature-img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--kk-r-card);box-shadow:var(--kk-sh)}
.kk-feature-body .kk-h2{margin-bottom:16px}
.kk-feature-body .kk-lead{margin-bottom:24px}
.kk-list{margin:0}
.kk-list li{position:relative;padding-left:24px;font-size:15px;line-height:1.9;color:var(--kk-ink2)}
.kk-list li::before{content:"";position:absolute;left:0;top:13px;width:7px;height:7px;border-radius:50%;background:var(--kk-main);opacity:.85}
.kk-list li+li{margin-top:8px}
.kk-list strong{color:var(--kk-ink);font-weight:600}
/* highlight cards */
.kk-hl-card{background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);padding:24px;box-shadow:var(--kk-sh);height:100%;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease}
.kk-hl-card:hover{transform:translateY(-2px);box-shadow:var(--kk-sh-hover)}
.kk-hl-card.is-wide{background:var(--kk-mist);border-color:transparent}
.kk-hl-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;margin-bottom:20px}
.kk-hl-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.kk-hl-card p{font-size:14px;line-height:1.75;color:var(--kk-ink2)}
.kk-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.kk-tagitem{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--kk-r-badge);background:#fff;border:1px solid var(--kk-line);font-size:12px;color:var(--kk-ink2)}
.kk-hl-card.is-wide .kk-tagitem{background:#fff;border-color:transparent}
.kk-hl-row{row-gap:24px}
/* metrics */
.kk-metric-band{background:var(--kk-deep);border-radius:20px;padding:48px 40px;color:#fff}
.kk-metric-band .kk-h2{color:#fff;margin-bottom:12px}
.kk-metric-band .kk-lead{color:rgba(255,255,255,.72);max-width:620px}
.kk-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:40px}
.kk-metric{border-top:1px solid rgba(255,255,255,.14);padding-top:20px}
.kk-metric strong{display:block;font-size:40px;font-weight:700;color:var(--kk-accent);line-height:1.1;font-variant-numeric:tabular-nums}
.kk-metric strong span{font-size:18px;margin-left:4px;color:rgba(255,255,255,.7);font-weight:500}
.kk-metric p{margin-top:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72)}
@media screen and (max-width:1023px){
  .kk-metric-band{padding:36px 24px;border-radius:16px}
  .kk-metrics{grid-template-columns:1fr;gap:20px;margin-top:28px}
  .kk-metric strong{font-size:32px}
}
/* steps */
.kk-steps-wrap{margin-top:48px}
.kk-steps{display:grid;grid-template-columns:repeat(4,1fr)}
.kk-step{position:relative;padding-right:24px}
.kk-step-num{width:40px;height:40px;border-radius:50%;background:var(--kk-mist);color:var(--kk-main);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;border:1px solid transparent}
.kk-step.is-done .kk-step-num{background:var(--kk-main);color:#fff}
.kk-step::after{content:"";position:absolute;top:20px;left:52px;right:12px;height:2px;background:var(--kk-mist);border-radius:2px}
.kk-step.is-done::after{background:rgba(46,107,230,.45)}
.kk-step:last-child::after{display:none}
.kk-step h3{font-size:16px;font-weight:600;margin:16px 0 8px}
.kk-step p{font-size:13px;line-height:1.7;color:var(--kk-ink3)}
@media screen and (max-width:1023px){
  .kk-steps{grid-template-columns:1fr 1fr;row-gap:32px}
  .kk-step:nth-child(2n)::after{display:none}
}
@media screen and (max-width:639px){
  .kk-steps{grid-template-columns:1fr;row-gap:24px}
  .kk-step{padding-right:0;padding-left:0}
  .kk-step::after{display:none}
  .kk-step h3{margin-top:12px}
}
/* news list */
.kk-news-row{row-gap:24px}
.kk-news-main{display:flex;flex-direction:column;background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);overflow:hidden;box-shadow:var(--kk-sh);height:100%;transition:transform .2s ease,box-shadow .2s ease;color:inherit}
.kk-news-main:hover{transform:translateY(-2px);box-shadow:var(--kk-sh-hover);color:inherit}
.kk-news-main-img{width:100%;aspect-ratio:16/9;object-fit:cover}
.kk-news-main-body{padding:24px;display:flex;flex-direction:column;flex:1}
.kk-badge{display:inline-flex;align-items:center;align-self:flex-start;height:24px;padding:0 10px;border-radius:var(--kk-r-badge);background:var(--kk-mist);color:var(--kk-main);font-size:12px;font-weight:600;margin-bottom:12px}
.kk-news-main h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.kk-news-main:hover h3{color:var(--kk-main)}
.kk-news-desc{font-size:14px;line-height:1.7;color:var(--kk-ink2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.kk-news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:20px;font-size:13px;color:var(--kk-ink3)}
.kk-news-meta i{transition:transform .2s ease}
.kk-news-main:hover .kk-news-meta i{transform:translateX(4px)}
.kk-news-mini{display:flex;gap:16px;background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);padding:16px;box-shadow:var(--kk-sh);height:100%;transition:transform .2s ease,box-shadow .2s ease;color:inherit}
.kk-news-mini:hover{transform:translateY(-2px);box-shadow:var(--kk-sh-hover);color:inherit}
.kk-news-mini img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:none}
.kk-news-mini-body{min-width:0;display:flex;flex-direction:column}
.kk-news-mini h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.kk-news-mini:hover h3{color:var(--kk-main)}
.kk-news-mini p{font-size:13px;line-height:1.65;color:var(--kk-ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.kk-news-mini .kk-news-meta{padding-top:8px;font-size:12px}
.kk-news-stack{display:flex;flex-direction:column;gap:16px;height:100%}
.kk-empty{background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);box-shadow:var(--kk-sh);padding:56px 24px;text-align:center;max-width:520px;margin:0 auto}
.kk-empty i{font-size:28px;color:var(--kk-ink3);margin-bottom:16px;display:block}
.kk-empty p{font-size:15px;color:var(--kk-ink2);margin-bottom:20px}
/* faq */
.kk-faq{background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);box-shadow:var(--kk-sh);overflow:hidden}
.kk-faq details{position:relative;border-top:1px solid var(--kk-line)}
.kk-faq details:first-child{border-top:none}
.kk-faq summary{list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;font-size:17px;font-weight:600;color:var(--kk-ink)}
.kk-faq summary::-webkit-details-marker{display:none}
.kk-faq summary:hover{color:var(--kk-main)}
.kk-faq-icon{width:24px;height:24px;border-radius:50%;background:var(--kk-mist);color:var(--kk-main);display:inline-flex;align-items:center;justify-content:center;font-size:15px;line-height:1;flex:none;transition:transform .22s ease,background .22s ease,color .22s ease}
.kk-faq details[open] .kk-faq-icon{transform:rotate(45deg);background:var(--kk-main);color:#fff}
.kk-faq details[open]{padding-left:3px}
.kk-faq details[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--kk-main);z-index:2}
.kk-faq-body{padding:0 24px 20px 24px;font-size:15px;line-height:1.8;color:var(--kk-ink2)}
@media screen and (max-width:639px){
  .kk-faq summary{padding:12px 20px;font-size:16px}
  .kk-faq-body{padding:0 20px 18px 20px}
}
/* cta */
.kk-cta{background:var(--kk-mist);border-radius:20px;padding:48px 40px}
.kk-cta-grid{row-gap:32px;align-items:center}
.kk-cta .kk-h2{margin-bottom:12px}
.kk-cta .kk-lead{max-width:460px}
.kk-form{display:flex;gap:12px;flex-wrap:wrap}
.kk-form input{flex:1 1 180px;height:44px;border-radius:var(--kk-r-input);border:1px solid var(--kk-line);background:#fff;padding:0 16px;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease}
.kk-form input::placeholder{color:var(--kk-ink3)}
.kk-form input:focus{outline:none;border-color:var(--kk-main);box-shadow:0 0 0 4px var(--kk-main-soft)}
.kk-form .kk-btn{flex:none;height:44px;padding:0 24px}
.kk-form-note{font-size:13px;color:var(--kk-ink3);margin-top:12px}
@media screen and (max-width:1023px){
  .kk-cta{padding:32px 24px;border-radius:16px}
}
/* footer */
.kk-footer{background:var(--kk-deep);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.kk-footer-row{row-gap:32px}
.kk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px}
.kk-footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#fff;margin-bottom:16px}
.kk-footer-logo svg{width:24px;height:24px;flex:none}
.kk-footer-logo:hover{color:#fff}
.kk-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
.kk-footer-links li{line-height:1.9}
.kk-footer-links a{font-size:14px;color:rgba(255,255,255,.72)}
.kk-footer-links a:hover{color:#fff}
.kk-footer-qr{width:88px;height:88px;border-radius:12px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(255,255,255,.55);margin-top:8px}
.kk-footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:24px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55)}
.kk-footer-bottom a{color:rgba(255,255,255,.55)}
.kk-footer-bottom a:hover{color:#fff}
@media screen and (max-width:639px){
  .kk-footer{padding-top:48px}
  .kk-footer-bottom{margin-top:32px}
}

/* roulang page: article */
:root{
  --kk-primary:#2E6BE6;
  --kk-primary-dark:#1B4FC0;
  --kk-second:#E8EEF6;
  --kk-accent:#FF8A3D;
  --kk-ink:#17202E;
  --kk-sub:#4A5768;
  --kk-muted:#8A96A8;
  --kk-line:#E4EAF2;
  --kk-bg:#F6F8FB;
  --kk-card:#FFFFFF;
  --kk-deep:#101B2E;
  --kk-r-card:14px;
  --kk-r-btn:10px;
  --kk-r-img:10px;
  --kk-shadow:0 1px 2px rgba(23,32,46,.04),0 12px 28px -12px rgba(23,32,46,.14);
  --kk-shadow-hover:0 18px 40px -16px rgba(23,32,46,.18);
  --kk-header-h:68px;
  --kk-s1:4px;--kk-s2:8px;--kk-s3:12px;--kk-s4:16px;--kk-s5:24px;--kk-s6:32px;--kk-s7:48px;--kk-s8:64px;--kk-s9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--kk-ink);
  background:var(--kk-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--kk-primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,opacity .18s ease}
a:hover{color:var(--kk-primary-dark)}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:3px solid rgba(46,107,230,.55);outline-offset:2px;border-radius:6px}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%}
.kk-skip{position:absolute;left:-9999px;top:0}
.kk-skip:focus{left:16px;top:12px;z-index:200;background:#fff;padding:8px 14px;border-radius:8px;box-shadow:var(--kk-shadow)}

/* 阅读进度 */
.kk-progress{position:fixed;top:var(--kk-header-h);left:0;height:3px;width:0;background:var(--kk-primary);z-index:49;transition:width .12s linear}

/* 导航 */
.kk-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--kk-line);box-shadow:0 2px 8px rgba(23,32,46,.05)}
.kk-nav{display:flex;align-items:center;height:var(--kk-header-h);gap:var(--kk-s5)}
.kk-logo{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700;color:var(--kk-ink);flex:0 0 auto}
.kk-logo svg{width:24px;height:24px;flex:0 0 auto}
.kk-logo span{white-space:nowrap}
.kk-menu{display:flex;align-items:center;gap:28px;list-style:none;margin:0 auto;padding:0}
.kk-menu a{position:relative;display:inline-block;padding:6px 0;font-size:16px;font-weight:500;color:var(--kk-sub)}
.kk-menu a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--kk-primary);transform:scaleX(0);transition:transform .2s ease}
.kk-menu a:hover{color:var(--kk-primary)}
.kk-menu a:hover::after,.kk-menu a.is-active::after{transform:scaleX(1)}
.kk-menu a.is-active{color:var(--kk-primary);font-weight:600}
.kk-actions{display:flex;align-items:center;gap:var(--kk-s3);flex:0 0 auto}
.kk-search{position:relative;display:flex;align-items:center}
.kk-search input{
  width:186px;height:36px;border-radius:999px;border:1px solid transparent;
  background:#F1F5FA;padding:0 34px 0 16px;color:var(--kk-ink);font-size:14px;
  transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease,width .2s ease;
}
.kk-search input::placeholder{color:var(--kk-muted)}
.kk-search input:focus{background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.12);outline:none}
.kk-search i{position:absolute;right:13px;font-size:13px;color:var(--kk-muted);pointer-events:none}
.kk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 20px;border-radius:var(--kk-r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease;
}
.kk-btn-primary{background:var(--kk-primary);color:#fff;box-shadow:0 8px 20px -10px rgba(46,107,230,.9)}
.kk-btn-primary:hover{background:var(--kk-primary-dark);color:#fff;transform:translateY(-1px)}
.kk-btn-primary:active{transform:translateY(0);opacity:.92}
.kk-btn-ghost{background:#fff;color:var(--kk-ink);border-color:var(--kk-line)}
.kk-btn-ghost:hover{border-color:var(--kk-primary);color:var(--kk-primary);transform:translateY(-1px)}
.kk-btn-accent{background:var(--kk-accent);color:#fff}
.kk-btn-accent:hover{background:#ef7a29;color:#fff;transform:translateY(-1px)}
.kk-btn-lg{height:46px;padding:0 26px;font-size:16px}
.kk-burger{display:none;width:42px;height:42px;border:1px solid var(--kk-line);border-radius:10px;background:#fff;cursor:pointer;position:relative}
.kk-burger span,.kk-burger span::before,.kk-burger span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--kk-ink);border-radius:2px;transform:translateX(-50%)}
.kk-burger span{top:50%;margin-top:-1px}
.kk-burger span::before{content:"";top:-6px;left:0;transform:none}
.kk-burger span::after{content:"";top:6px;left:0;transform:none}

/* 移动抽屉 */
.kk-overlay{position:fixed;inset:0;background:rgba(16,27,46,.45);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:70}
.kk-overlay.is-open{opacity:1;visibility:visible}
.kk-drawer{position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;z-index:80;transform:translateX(102%);transition:transform .26s ease;display:flex;flex-direction:column;padding:20px;box-shadow:-12px 0 32px -18px rgba(23,32,46,.35)}
.kk-drawer.is-open{transform:translateX(0)}
.kk-drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--kk-line)}
.kk-drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--kk-line);background:#fff;cursor:pointer;color:var(--kk-sub)}
.kk-drawer-links{list-style:none;margin:8px 0 0}
.kk-drawer-links li{border-bottom:1px solid var(--kk-line)}
.kk-drawer-links a{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:15px;font-weight:500;color:var(--kk-ink)}
.kk-drawer-links a:hover{color:var(--kk-primary)}
.kk-drawer-links a.is-active{color:var(--kk-primary)}
.kk-drawer-foot{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.kk-drawer-foot .kk-search input{width:100%}

/* 面包屑 */
.kk-breadcrumb{padding:20px 0 0}
.kk-breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--kk-muted)}
.kk-breadcrumb a{color:var(--kk-sub)}
.kk-breadcrumb a:hover{color:var(--kk-primary)}
.kk-breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--kk-line)}
.kk-breadcrumb [aria-current]{color:var(--kk-primary);font-weight:600}

/* 文章头 */
.kk-article-hero{background:var(--kk-second);margin-top:20px;border-radius:20px;padding:40px 44px;position:relative;overflow:hidden}
.kk-article-hero::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(46,107,230,.14),rgba(46,107,230,0) 68%)}
.kk-badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:#fff;color:var(--kk-primary);font-size:12px;font-weight:600;letter-spacing:.02em}
.kk-article-hero h1{font-size:clamp(30px,3.4vw,46px);margin:16px 0 14px;max-width:900px}
.kk-meta{display:flex;flex-wrap:wrap;align-items:center;gap:20px;font-size:14px;color:var(--kk-sub);position:relative;z-index:1}
.kk-meta span{display:inline-flex;align-items:center;gap:7px}
.kk-meta i{color:var(--kk-primary);font-size:13px}

/* 布局 */
.kk-section{padding:var(--kk-s9) 0}
.kk-section-tight{padding:var(--kk-s7) 0 var(--kk-s9)}
.kk-article-layout{align-items:flex-start}
.kk-article-card{background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);box-shadow:var(--kk-shadow);padding:40px 44px}
.kk-article-body{max-width:780px;font-size:17px;line-height:1.8;color:#222C3A}
.kk-article-body>*+*{margin-top:20px}
.kk-article-body h2{font-size:26px;margin-top:40px;margin-bottom:12px;padding-left:14px;border-left:3px solid var(--kk-primary);font-weight:700}
.kk-article-body h3{font-size:20px;margin-top:28px;margin-bottom:10px;font-weight:600}
.kk-article-body p{font-size:17px;line-height:1.8}
.kk-article-body a{border-bottom:1px solid rgba(46,107,230,.35)}
.kk-article-body a:hover{border-bottom-width:2px;border-bottom-color:var(--kk-primary)}
.kk-article-body ul,.kk-article-body ol{padding-left:22px;list-style-position:outside}
.kk-article-body ul{list-style:disc}
.kk-article-body ol{list-style:decimal}
.kk-article-body li{line-height:1.9;margin:8px 0}
.kk-article-body blockquote{margin:24px 0;background:var(--kk-second);border-left:3px solid var(--kk-primary);padding:20px;border-radius:0 var(--kk-r-card) var(--kk-r-card) 0;color:var(--kk-sub)}
.kk-article-body blockquote p{font-size:16px}
.kk-article-body img{border-radius:var(--kk-r-img);margin:24px auto;box-shadow:var(--kk-shadow)}
.kk-article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);overflow:hidden}
.kk-article-body th,.kk-article-body td{padding:12px 16px;border-bottom:1px solid var(--kk-line);text-align:left}
.kk-article-body thead th{background:var(--kk-second);font-weight:600;color:var(--kk-ink)}
.kk-article-body tbody tr:nth-child(even){background:#F8FAFD}
.kk-article-body code{background:var(--kk-second);padding:2px 6px;border-radius:6px;font-size:15px}
.kk-empty{text-align:center;padding:56px 20px;background:#fff;border:1px dashed var(--kk-line);border-radius:var(--kk-r-card)}
.kk-empty i{font-size:30px;color:var(--kk-muted)}
.kk-empty h2{font-size:22px;margin:16px 0 8px}
.kk-empty p{color:var(--kk-sub);margin-bottom:20px}

/* 侧栏 */
.kk-side{position:sticky;top:calc(var(--kk-header-h) + 24px);display:flex;flex-direction:column;gap:20px}
.kk-side-card{background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);box-shadow:var(--kk-shadow);padding:24px}
.kk-side-card h2,.kk-side-card h3{font-size:17px;font-weight:600;margin-bottom:14px}
.kk-toc{list-style:none}
.kk-toc li+li{margin-top:4px}
.kk-toc a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14px;color:var(--kk-sub);line-height:1.5}
.kk-toc a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--kk-line);flex:0 0 auto;transition:background-color .18s ease}
.kk-toc a:hover{background:var(--kk-second);color:var(--kk-primary)}
.kk-toc a:hover::before{background:var(--kk-primary)}
.kk-hot{list-style:none}
.kk-hot li+li{margin-top:12px;padding-top:12px;border-top:1px solid var(--kk-line)}
.kk-hot a{font-size:14px;font-weight:500;color:var(--kk-ink);display:block}
.kk-hot a:hover{color:var(--kk-primary)}
.kk-hot small{display:block;color:var(--kk-muted);font-size:12px;margin-top:4px}
.kk-side-note{background:var(--kk-deep);color:#E9EFF8;border-radius:var(--kk-r-card);padding:24px}
.kk-side-note h3{color:#fff;font-size:17px;margin-bottom:10px}
.kk-side-note p{font-size:14px;line-height:1.75;color:rgba(233,239,248,.78)}
.kk-side-note .kk-btn{margin-top:16px;width:100%}
.kk-anchor-bar{display:none;gap:10px;overflow-x:auto;padding:14px 0 4px}
.kk-anchor-bar a{flex:0 0 auto;font-size:13px;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--kk-line);color:var(--kk-sub)}
.kk-anchor-bar a:hover{border-color:var(--kk-primary);color:var(--kk-primary)}

/* 标签与操作行 */
.kk-foot-row{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center;margin-top:40px;padding-top:24px;border-top:1px solid var(--kk-line)}
.kk-tags{display:flex;flex-wrap:wrap;gap:10px}
.kk-tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--kk-second);color:var(--kk-primary);font-size:13px;font-weight:500}
.kk-tag:hover{background:#dbe6f4}
.kk-share{display:flex;gap:10px}
.kk-share button{height:36px;padding:0 16px;border-radius:10px;border:1px solid var(--kk-line);background:#fff;color:var(--kk-sub);font-size:14px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all .18s ease}
.kk-share button:hover{border-color:var(--kk-primary);color:var(--kk-primary);transform:translateY(-1px)}

/* 相关内容 */
.kk-card{background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);box-shadow:var(--kk-shadow);overflow:hidden;display:flex;flex-direction:column;height:100%;transition:transform .2s ease,box-shadow .2s ease}
.kk-card:hover{transform:translateY(-2px);box-shadow:var(--kk-shadow-hover)}
.kk-card-media{aspect-ratio:16/9;overflow:hidden;background:var(--kk-second)}
.kk-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.kk-card:hover .kk-card-media img{transform:scale(1.04)}
.kk-card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.kk-card-body h3{font-size:18px;font-weight:600;line-height:1.45}
.kk-card-body h3 a{color:var(--kk-ink);display:block}
.kk-card:hover .kk-card-body h3 a{color:var(--kk-primary)}
.kk-card-body p{font-size:14px;line-height:1.7;color:var(--kk-sub);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.kk-card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--kk-muted)}
.kk-card-foot i{transition:transform .2s ease}
.kk-card:hover .kk-card-foot i{transform:translateX(4px);color:var(--kk-primary)}
.kk-sec-head{max-width:720px;margin-bottom:40px}
.kk-sec-head .kk-eyebrow{font-size:13px;font-weight:600;color:var(--kk-primary);letter-spacing:.06em;text-transform:uppercase}
.kk-sec-head h2{font-size:30px;margin:12px 0 12px}
.kk-sec-head p{color:var(--kk-sub);font-size:16px}

/* 返回入口 */
.kk-back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.kk-back-link{display:inline-flex;align-items:center;gap:10px;padding:14px 20px;border-radius:12px;background:#fff;border:1px solid var(--kk-line);font-size:14px;font-weight:500;color:var(--kk-sub);box-shadow:var(--kk-shadow)}
.kk-back-link:hover{color:var(--kk-primary);border-color:var(--kk-primary);transform:translateY(-1px)}

/* CTA */
.kk-cta{background:var(--kk-second);border-radius:20px;padding:48px;position:relative;overflow:hidden}
.kk-cta-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.kk-cta h2{font-size:30px;margin-bottom:14px}
.kk-cta p{color:var(--kk-sub);font-size:16px;max-width:520px}
.kk-cta-points{list-style:none;display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:18px}
.kk-cta-points li{font-size:14px;color:var(--kk-sub);display:inline-flex;align-items:center;gap:8px}
.kk-cta-points i{color:var(--kk-primary)}
.kk-form{background:#fff;border-radius:16px;padding:24px;box-shadow:var(--kk-shadow);display:flex;flex-direction:column;gap:14px}
.kk-form label{font-size:13px;font-weight:600;color:var(--kk-sub);display:block;margin-bottom:6px}
.kk-form input{width:100%;height:44px;border-radius:10px;border:1px solid var(--kk-line);padding:0 14px;background:#fff;color:var(--kk-ink);transition:border-color .18s ease,box-shadow .18s ease}
.kk-form input:focus{border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.12);outline:none}
.kk-form small{font-size:12px;color:var(--kk-muted)}

/* 页脚 */
.kk-footer{background:var(--kk-deep);color:rgba(233,239,248,.8);margin-top:var(--kk-s9);padding:64px 0 28px}
.kk-footer-row{row-gap:32px}
.kk-footer-logo{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700;color:#fff;margin-bottom:16px}
.kk-footer-logo svg{width:24px;height:24px}
.kk-footer p{font-size:14px;line-height:1.9;color:rgba(233,239,248,.72)}
.kk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.kk-footer-links{list-style:none}
.kk-footer-links li{font-size:14px;line-height:1.9;color:rgba(233,239,248,.72)}
.kk-footer-links a{color:rgba(233,239,248,.72)}
.kk-footer-links a:hover{color:#fff}
.kk-footer-qr{margin-top:16px;width:96px;height:96px;border-radius:12px;border:1px dashed rgba(255,255,255,.28);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(233,239,248,.6)}
.kk-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;font-size:13px;color:rgba(233,239,248,.55)}

@media screen and (max-width:1199px){
  .kk-search input{width:150px}
  .kk-menu{gap:20px}
}
@media screen and (max-width:1023px){
  :root{--kk-header-h:56px}
  .kk-menu,.kk-actions{display:none}
  .kk-burger{display:block;margin-left:auto}
  .kk-nav{gap:12px}
  .kk-section{padding:72px 0}
  .kk-article-hero{padding:32px 28px;border-radius:16px}
  .kk-article-card{padding:28px 24px}
  .kk-side{position:static}
  .kk-anchor-bar{display:flex}
  .kk-cta{padding:32px 24px}
  .kk-cta-grid{grid-template-columns:1fr;gap:28px}
  .kk-footer{padding:48px 0 24px}
  .kk-sec-head h2{font-size:24px}
  .kk-cta h2{font-size:24px}
}
@media screen and (max-width:767px){
  .kk-article-layout{display:block}
  .kk-side{display:none}
  .kk-article-body{font-size:16px}
  .kk-article-body p{font-size:16px}
  .kk-article-body h2{font-size:22px;margin-top:32px}
  .kk-article-body h3{font-size:18px}
  .kk-sec-head h2{font-size:22px}
  .kk-cta h2{font-size:22px}
  .kk-footer-bottom{flex-direction:column}
}
@media screen and (max-width:519px){
  .grid-container{padding-left:16px;padding-right:16px}
  .kk-article-hero{padding:24px 20px}
  .kk-article-hero h1{font-size:28px}
  .kk-article-card{padding:22px 18px;border-radius:12px}
  .kk-section{padding:56px 0}
  .kk-card-body{padding:20px}
  .kk-cta{padding:26px 18px;border-radius:16px}
  .kk-meta{gap:14px;font-size:13px}
}

/* roulang page: category1 */
:root{
  --kk-primary:#2E6BE6;
  --kk-primary-dark:#1B4FC0;
  --kk-mist:#E8EEF6;
  --kk-accent:#FF8A3D;
  --kk-ink:#17202E;
  --kk-text2:#4A5768;
  --kk-text3:#8A96A8;
  --kk-line:#E4EAF2;
  --kk-page:#F6F8FB;
  --kk-card:#FFFFFF;
  --kk-dark:#101B2E;
  --kk-radius-card:14px;
  --kk-radius-btn:10px;
  --kk-radius-pill:999px;
  --kk-shadow:0 1px 2px rgba(23,32,46,.04), 0 12px 28px -12px rgba(23,32,46,.14);
  --kk-shadow-hover:0 18px 40px -16px rgba(23,32,46,.18);
  --kk-space-1:4px;
  --kk-space-2:8px;
  --kk-space-3:12px;
  --kk-space-4:16px;
  --kk-space-5:24px;
  --kk-space-6:32px;
  --kk-space-7:48px;
  --kk-space-8:64px;
  --kk-space-9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--kk-ink);
  background:var(--kk-page);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4{margin:0 0 var(--kk-space-3);line-height:1.25;letter-spacing:-0.01em;color:var(--kk-ink);font-weight:700;}
h1{font-size:clamp(30px,3.4vw,52px);}
h2{font-size:30px;font-weight:600;}
h3{font-size:20px;font-weight:600;}
h4{font-size:15px;font-weight:600;}
p{margin:0 0 var(--kk-space-4);line-height:1.75;color:var(--kk-text2);}
a{color:var(--kk-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--kk-primary-dark);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(46,107,230,.5);outline-offset:2px;}
img{max-width:100%;display:block;border:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
.grid-x.grid-margin-x{margin-left:-12px !important;margin-right:-12px !important;}
.grid-x.grid-margin-x > .cell{padding-left:12px !important;padding-right:12px !important;}

/* ---------- 导航 ---------- */
.kk-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--kk-line);
  box-shadow:0 2px 8px rgba(23,32,46,.05);
}
.kk-nav{display:flex;align-items:center;justify-content:space-between;gap:var(--kk-space-5);min-height:68px;}
.kk-logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.kk-logo svg{width:24px;height:24px;flex:none;}
.kk-logo span{font-size:19px;font-weight:700;color:var(--kk-ink);letter-spacing:-0.01em;}
.kk-logo:hover span{color:var(--kk-primary-dark);}
.kk-menu{display:flex;align-items:center;gap:28px;}
.kk-menu a{position:relative;display:inline-block;padding:6px 0;font-size:16px;font-weight:500;color:var(--kk-text2);}
.kk-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--kk-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.kk-menu a:hover,.kk-menu a.is-active{color:var(--kk-primary);}
.kk-menu a:hover::after,.kk-menu a.is-active::after{transform:scaleX(1);}
.kk-actions{display:flex;align-items:center;gap:var(--kk-space-3);flex:none;}
.kk-search{position:relative;}
.kk-search input[type="search"]{
  width:200px;height:36px;border-radius:var(--kk-radius-pill);
  background:#F1F5FA;border:1px solid transparent;
  padding:0 38px 0 16px;font-size:14px;color:var(--kk-ink);margin:0;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.kk-search input[type="search"]::placeholder{color:var(--kk-text3);}
.kk-search input[type="search"]:focus{background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.14);outline:none;}
.kk-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--kk-text3);pointer-events:none;}
.kk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--kk-radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,opacity .2s ease;
}
.kk-btn-primary{background:var(--kk-primary);color:#fff;}
.kk-btn-primary:hover{background:var(--kk-primary-dark);color:#fff;transform:translateY(-1px);}
.kk-btn-primary:active{transform:translateY(0);opacity:.9;}
.kk-btn-ghost{background:#fff;color:var(--kk-primary);border-color:#C9D9F5;}
.kk-btn-ghost:hover{background:#F1F5FA;color:var(--kk-primary-dark);transform:translateY(-1px);}
.kk-btn-ghost:active{transform:translateY(0);opacity:.9;}
.kk-actions .kk-btn{height:38px;padding:0 20px;}
.kk-burger{
  display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--kk-line);
  background:#fff;position:relative;cursor:pointer;flex:none;
}
.kk-burger span,
.kk-burger span::before,
.kk-burger span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--kk-ink);content:"";
  transition:background .2s ease;
}
.kk-burger span{top:50%;margin-top:-1px;}
.kk-burger span::before{top:-6px;}
.kk-burger span::after{top:6px;}
.kk-burger:hover{border-color:var(--kk-primary);}
.kk-burger:hover span,
.kk-burger:hover span::before,
.kk-burger:hover span::after{background:var(--kk-primary);}

/* ---------- 抽屉 ---------- */
.kk-mask{
  position:fixed;inset:0;background:rgba(16,27,46,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.kk-mask.is-open{opacity:1;visibility:visible;}
.kk-drawer{
  position:fixed;top:0;right:0;height:100%;width:308px;max-width:86vw;
  background:#fff;z-index:80;transform:translateX(100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px 20px 24px;overflow-y:auto;
}
.kk-drawer.is-open{transform:translateX(0);}
.kk-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.kk-drawer-title{font-size:15px;font-weight:600;color:var(--kk-ink);}
.kk-drawer-close{
  width:32px;height:32px;border-radius:8px;border:1px solid var(--kk-line);background:#fff;
  font-size:18px;line-height:1;color:var(--kk-text2);cursor:pointer;
}
.kk-drawer-close:hover{border-color:var(--kk-primary);color:var(--kk-primary);}
.kk-drawer-menu{margin:0 0 16px;}
.kk-drawer-menu li{border-bottom:1px solid var(--kk-line);}
.kk-drawer-menu a{display:flex;align-items:center;height:48px;font-size:16px;font-weight:500;color:var(--kk-text2);}
.kk-drawer-menu a.is-active{color:var(--kk-primary);}
.kk-drawer-search{position:relative;margin-bottom:16px;}
.kk-drawer-search input[type="search"]{
  width:100%;height:40px;border-radius:var(--kk-radius-btn);background:#F1F5FA;
  border:1px solid transparent;padding:0 14px;font-size:14px;margin:0;
}
.kk-drawer-search input[type="search"]:focus{background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.14);outline:none;}
.kk-drawer-cta{width:100%;}

/* ---------- 分类窄版 Hero ---------- */
.kk-cat-hero{
  background-color:var(--kk-mist);
  background-image:repeating-linear-gradient(135deg,rgba(46,107,230,.035) 0 1px,transparent 1px 14px);
  padding:40px 0 52px;
}
.kk-breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--kk-text3);margin-bottom:20px;}
.kk-breadcrumb a{color:var(--kk-text2);}
.kk-breadcrumb a:hover{color:var(--kk-primary);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.kk-cat-hero h1{font-size:clamp(28px,3vw,42px);font-weight:700;margin-bottom:14px;max-width:22em;}
.kk-cat-hero .kk-hero-sub{font-size:17px;color:var(--kk-text2);max-width:44em;margin-bottom:26px;}
.kk-hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 引言 ---------- */
.kk-intro{background:#fff;padding:52px 0 8px;}
.kk-lead{font-size:18px;line-height:1.85;color:var(--kk-text2);margin:0;max-width:830px;}
.kk-lead strong{color:var(--kk-ink);font-weight:600;}

/* ---------- 图文交替区块 ---------- */
.kk-split{padding:76px 0;}
.kk-split--plain{background:#fff;}
.kk-split--tint{background:var(--kk-page);}
.kk-split-row{gap:0;}
.kk-split-media{border-radius:20px;overflow:hidden;box-shadow:var(--kk-shadow);}
.kk-split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.kk-split-media:hover img{transform:scale(1.02);}
.kk-split-body{padding:0 8px;}
.kk-split-body h2{margin-bottom:14px;}
.kk-split-body > p{font-size:16px;color:var(--kk-text2);max-width:34em;}
.kk-badge{
  display:inline-block;font-size:12px;font-weight:600;color:var(--kk-primary);
  background:var(--kk-mist);border-radius:var(--kk-radius-pill);padding:4px 12px;margin-bottom:14px;
}
.kk-points{margin-top:var(--kk-space-2);}
.kk-points li{display:flex;gap:10px;padding:7px 0;font-size:15px;line-height:1.7;color:var(--kk-text2);}
.kk-points li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--kk-primary);
}
.kk-stat-inline{
  display:inline-flex;align-items:baseline;gap:8px;margin-top:18px;padding:10px 16px;
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-radius-btn);box-shadow:var(--kk-shadow);
}
.kk-split--tint .kk-stat-inline{background:#fff;}
.kk-stat-inline b{font-size:22px;font-weight:700;color:var(--kk-accent);line-height:1;}
.kk-stat-inline span{font-size:13px;color:var(--kk-text2);}

/* ---------- 规格参数 ---------- */
.kk-spec-section{padding:76px 0;background:#fff;}
.kk-section-sub{font-size:16px;color:var(--kk-text2);max-width:46em;margin-bottom:var(--kk-space-6);}
.kk-spec{
  background:var(--kk-card);border:1px solid var(--kk-line);border-radius:var(--kk-radius-card);
  box-shadow:var(--kk-shadow);padding:8px 28px;
}
.kk-spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;margin:0;}
.kk-spec-item{padding:20px 0;border-bottom:1px solid var(--kk-line);}
.kk-spec-item dt{font-size:13px;color:var(--kk-text3);margin-bottom:6px;font-weight:400;}
.kk-spec-item dd{margin:0;font-size:16px;font-weight:500;color:var(--kk-ink);line-height:1.6;}

/* ---------- FAQ ---------- */
.kk-faq-section{padding:76px 0;background:var(--kk-page);}
.kk-faq{
  background:var(--kk-card);border:1px solid var(--kk-line);border-radius:var(--kk-radius-card);
  box-shadow:var(--kk-shadow);overflow:hidden;margin-top:var(--kk-space-6);
}
.kk-faq-item + .kk-faq-item{border-top:1px solid var(--kk-line);}
.kk-faq-item.is-open{box-shadow:inset 3px 0 0 var(--kk-primary);}
.kk-faq-q{
  width:100%;min-height:56px;padding:12px 24px;background:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;color:var(--kk-ink);text-align:left;cursor:pointer;
  transition:color .2s ease;
}
.kk-faq-q:hover{color:var(--kk-primary);}
.kk-faq-icon{
  position:relative;flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--kk-line);transition:transform .25s ease,border-color .25s ease;
}
.kk-faq-icon::before,.kk-faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--kk-primary);
  transform:translate(-50%,-50%);border-radius:2px;
}
.kk-faq-icon::before{width:12px;height:2px;}
.kk-faq-icon::after{width:2px;height:12px;}
.kk-faq-item.is-open .kk-faq-icon{transform:rotate(45deg);border-color:var(--kk-primary);}
.kk-faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 24px;}
.kk-faq-a p{font-size:15px;line-height:1.8;color:var(--kk-text2);margin:0;}
.kk-faq-item.is-open .kk-faq-a{max-height:340px;padding-bottom:20px;}

/* ---------- CTA ---------- */
.kk-cta-section{padding:76px 0;background:#fff;}
.kk-cta{
  background:var(--kk-mist);border-radius:20px;padding:44px;
  box-shadow:var(--kk-shadow);
}
.kk-cta h2{margin-bottom:12px;}
.kk-cta .kk-cta-text{font-size:16px;color:var(--kk-text2);margin-bottom:0;max-width:32em;}
.kk-cta-form{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.kk-cta-form input[type="text"],
.kk-cta-form input[type="tel"]{
  flex:1 1 180px;min-width:0;height:44px;border-radius:var(--kk-radius-btn);
  border:1px solid var(--kk-line);background:#fff;padding:0 16px;
  font-size:15px;color:var(--kk-ink);margin:0;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.kk-cta-form input::placeholder{color:var(--kk-text3);}
.kk-cta-form input:focus{background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.14);outline:none;}
.kk-cta-form .kk-btn{flex:0 0 auto;background:var(--kk-accent);color:#fff;border-color:transparent;}
.kk-cta-form .kk-btn:hover{background:#E9762B;color:#fff;transform:translateY(-1px);}
.kk-cta-form .kk-btn:active{transform:translateY(0);opacity:.9;}
.kk-cta-note{font-size:13px;color:var(--kk-text3);margin:14px 0 0;}
.kk-cta-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:20px;}
.kk-cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--kk-text2);}
.kk-cta-points i{color:var(--kk-primary);font-size:13px;}

/* ---------- 页脚 ---------- */
.kk-footer{background:var(--kk-dark);color:rgba(255,255,255,.78);padding:64px 0 24px;}
.kk-footer-row{padding-bottom:8px;}
.kk-footer h4{color:#fff;margin-bottom:16px;font-size:15px;}
.kk-footer p{color:rgba(255,255,255,.68);font-size:14px;line-height:1.8;margin:0;}
.kk-footer-logo{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.kk-footer-logo svg{width:24px;height:24px;flex:none;}
.kk-footer-logo span{font-size:19px;font-weight:700;color:#fff;letter-spacing:-0.01em;}
.kk-footer-logo:hover span{color:#CFE0FF;}
.kk-footer-links{margin:0;}
.kk-footer-links li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.68);}
.kk-footer-links a{color:rgba(255,255,255,.75);}
.kk-footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.kk-footer-qr{
  width:88px;height:88px;margin-top:16px;border:1px dashed rgba(255,255,255,.28);
  border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(255,255,255,.5);
}
.kk-footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .kk-split-row--reverse{flex-direction:row-reverse;}
}
@media (max-width:1023px){
  .kk-menu,.kk-actions{display:none;}
  .kk-burger{display:block;}
  .kk-nav{min-height:56px;}
  .kk-cat-hero{padding:32px 0 44px;}
  .kk-split{padding:72px 0;}
  .kk-spec-section,.kk-faq-section,.kk-cta-section{padding:72px 0;}
  .kk-split-media{margin-bottom:28px;}
  .kk-split-row--reverse .kk-split-media{margin-bottom:28px;}
  h2{font-size:26px;}
}
@media (max-width:767px){
  .kk-spec-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .kk-spec{padding:8px 20px;}
  .kk-cta{padding:28px 20px;border-radius:16px;}
  .kk-cta-form .kk-btn{width:100%;}
  .kk-faq-q{font-size:16px;padding:12px 20px;}
  .kk-faq-a{padding:0 20px;}
}
@media (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:28px;}
  .kk-cat-hero h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  .kk-lead{font-size:17px;}
  .kk-split{padding:56px 0;}
  .kk-spec-section,.kk-faq-section,.kk-cta-section{padding:56px 0;}
  .kk-cta-points{gap:12px;}
  .kk-footer{padding:48px 0 20px;}
  .kk-footer h4{margin-top:24px;}
  .kk-footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
/* ================= 设计变量 ================= */
:root{
  --kk-primary:#2E6BE6;
  --kk-primary-dark:#1B4FC0;
  --kk-mist:#E8EEF6;
  --kk-mist-2:#F1F5FA;
  --kk-accent:#FF8A3D;
  --kk-accent-dark:#E8741F;
  --kk-ink:#17202E;
  --kk-sub:#4A5768;
  --kk-weak:#8A96A8;
  --kk-line:#E4EAF2;
  --kk-bg:#F6F8FB;
  --kk-card:#FFFFFF;
  --kk-deep:#101B2E;
  --kk-r-card:14px;
  --kk-r-btn:10px;
  --kk-r-img:10px;
  --kk-r-hero:20px;
  --kk-shadow:0 1px 2px rgba(23,32,46,.04), 0 12px 28px -12px rgba(23,32,46,.14);
  --kk-shadow-hover:0 18px 40px -16px rgba(23,32,46,.18);
  --kk-fs-h1:clamp(28px,3.2vw,44px);
  --kk-fs-h2:30px;
  --kk-fs-h3:20px;
  --kk-trans:.2s ease;
}

/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--kk-ink);
  background:var(--kk-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--kk-primary);text-decoration:none;transition:color var(--kk-trans)}
a:hover{color:var(--kk-primary-dark)}
h1,h2,h3,h4,h5{line-height:1.25;letter-spacing:-.01em;margin:0;font-weight:700}
h2{font-size:var(--kk-fs-h2)}
h3{font-size:var(--kk-fs-h3)}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--kk-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(46,107,230,.16)}

/* Foundation 覆盖 */
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
@media (min-width:1024px){
  .grid-x.grid-margin-x{margin-left:-16px;margin-right:-16px}
  .grid-x.grid-margin-x>.cell{padding-left:16px;padding-right:16px}
}

/* ================= 通用组件 ================= */
.kk-section{padding:96px 0}
.kk-section--white{background:#fff}
.kk-section--tight{padding:72px 0}
.kk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--kk-primary);background:var(--kk-mist);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.kk-lead{font-size:17px;line-height:1.8;color:var(--kk-sub);max-width:780px}
.kk-sec-head{max-width:780px;margin-bottom:40px}
.kk-sec-head h2{margin-bottom:14px}
.kk-sec-head p{color:var(--kk-sub);font-size:16px}

.kk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 20px;border-radius:var(--kk-r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--kk-trans),color var(--kk-trans),transform var(--kk-trans),box-shadow var(--kk-trans);
  white-space:nowrap;
}
.kk-btn-primary{background:var(--kk-primary);color:#fff}
.kk-btn-primary:hover{background:var(--kk-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(46,107,230,.7)}
.kk-btn-primary:active{transform:translateY(0);opacity:.92}
.kk-btn-ghost{background:#fff;border-color:var(--kk-line);color:var(--kk-ink)}
.kk-btn-ghost:hover{border-color:var(--kk-primary);color:var(--kk-primary);transform:translateY(-1px)}
.kk-btn-accent{background:var(--kk-accent);color:#fff;height:44px;padding:0 26px}
.kk-btn-accent:hover{background:var(--kk-accent-dark);color:#fff;transform:translateY(-1px)}
.kk-btn-accent:active{transform:translateY(0);opacity:.92}
.kk-btn-lg{height:48px;padding:0 28px;font-size:16px}

.kk-badge{
  display:inline-block;font-size:12px;font-weight:600;line-height:1.6;
  color:var(--kk-primary);background:var(--kk-mist);
  border-radius:999px;padding:3px 12px;
}

/* ================= 导航 ================= */
.kk-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--kk-line);
  box-shadow:0 2px 8px rgba(23,32,46,.05);
}
.kk-nav{display:flex;align-items:center;gap:28px;height:68px}
.kk-logo{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;font-size:19px;font-weight:700;color:var(--kk-ink);letter-spacing:-.01em}
.kk-logo svg{width:24px;height:24px;flex:0 0 24px}
.kk-logo:hover{color:var(--kk-ink)}
.kk-menu{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0;flex:1 1 auto}
.kk-menu a{position:relative;display:inline-block;font-size:16px;font-weight:500;color:var(--kk-sub);padding:6px 0}
.kk-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--kk-primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--kk-trans);
}
.kk-menu a:hover{color:var(--kk-primary)}
.kk-menu a:hover::after,.kk-menu a.is-active::after{transform:scaleX(1)}
.kk-menu a.is-active{color:var(--kk-primary);font-weight:600}
.kk-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.kk-search{position:relative;display:flex;align-items:center;margin:0}
.kk-search input{
  width:196px;height:36px;border-radius:999px;background:var(--kk-mist-2);
  border:1px solid transparent;padding:0 38px 0 16px;font-size:14px;color:var(--kk-ink);
  outline:none;transition:border-color var(--kk-trans),background var(--kk-trans),box-shadow var(--kk-trans);
}
.kk-search input::placeholder{color:var(--kk-weak)}
.kk-search input:focus{background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.12)}
.kk-search i{position:absolute;right:14px;font-size:13px;color:var(--kk-weak);pointer-events:none}
.kk-burger{
  display:none;width:40px;height:40px;border:1px solid var(--kk-line);border-radius:10px;
  background:#fff;position:relative;flex:0 0 auto;
}
.kk-burger span,.kk-burger::before,.kk-burger::after{
  content:"";position:absolute;left:11px;right:11px;height:2px;background:var(--kk-ink);
  border-radius:2px;transition:transform var(--kk-trans),opacity var(--kk-trans);
}
.kk-burger::before{top:13px}
.kk-burger span{top:19px}
.kk-burger::after{top:25px}
.kk-burger[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg)}
.kk-burger[aria-expanded="true"] span{opacity:0}
.kk-burger[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg)}

.kk-mask{
  position:fixed;inset:0;background:rgba(16,27,46,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.kk-mask.is-open{opacity:1;visibility:visible}
.kk-drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .28s ease;padding:24px 20px 32px;
  overflow-y:auto;box-shadow:-16px 0 44px -22px rgba(16,27,46,.4);
}
.kk-drawer.is-open{transform:translateX(0)}
.kk-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.kk-drawer-head strong{font-size:17px}
.kk-drawer-close{width:34px;height:34px;border-radius:9px;border:1px solid var(--kk-line);background:#fff;color:var(--kk-sub);font-size:16px;line-height:1}
.kk-drawer-links{list-style:none;margin:0 0 20px;padding:0}
.kk-drawer-links li{border-bottom:1px solid var(--kk-line)}
.kk-drawer-links a{display:flex;align-items:center;height:48px;font-size:15.5px;font-weight:500;color:var(--kk-sub)}
.kk-drawer-links a.is-active{color:var(--kk-primary);font-weight:600}
.kk-drawer .kk-search{width:100%;margin-bottom:16px}
.kk-drawer .kk-search input{width:100%}
.kk-drawer .kk-btn{width:100%}

/* ================= 窄版 Hero ================= */
.kk-hero-narrow{position:relative;background:var(--kk-mist);overflow:hidden;padding:56px 0 52px}
.kk-hero-narrow::after{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.16;
}
.kk-hero-narrow .grid-container{position:relative;z-index:2}
.kk-hero-narrow h1{font-size:var(--kk-fs-h1);max-width:820px;margin-bottom:16px}
.kk-hero-narrow .kk-hero-sub{font-size:17px;color:var(--kk-sub);max-width:680px;margin-bottom:22px}
.kk-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.kk-hero-tags span{
  display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--kk-line);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:500;color:var(--kk-sub);
  box-shadow:0 1px 2px rgba(23,32,46,.04);
}
.kk-hero-tags i{color:var(--kk-primary);font-size:12px}
.kk-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--kk-weak);list-style:none;margin:0;padding:0}
.kk-breadcrumb a{color:var(--kk-sub)}
.kk-breadcrumb a:hover{color:var(--kk-primary);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.kk-breadcrumb li:not(:last-child)::after{content:"/";margin-left:8px;color:var(--kk-line)}
.kk-breadcrumb li[aria-current]{color:var(--kk-primary);font-weight:600}

/* ================= 主布局 ================= */
.kk-layout{align-items:flex-start}
.kk-side-inner{position:sticky;top:92px}
.kk-side-card{
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);
  box-shadow:var(--kk-shadow);padding:20px;
}
.kk-side-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--kk-weak);margin:0 0 12px}
.kk-anchor-list{list-style:none;margin:0;padding:0}
.kk-anchor-list li{margin-bottom:4px}
.kk-anchor-list a{
  display:block;font-size:14.5px;color:var(--kk-sub);padding:9px 12px;border-radius:9px;
  transition:background var(--kk-trans),color var(--kk-trans);
}
.kk-anchor-list a:hover{background:var(--kk-mist-2);color:var(--kk-primary)}
.kk-side-help{
  margin-top:16px;background:var(--kk-deep);border-radius:var(--kk-r-card);padding:20px;color:rgba(255,255,255,.78);
}
.kk-side-help h3{font-size:15px;color:#fff;margin-bottom:8px}
.kk-side-help p{font-size:13.5px;line-height:1.75;margin:0 0 14px}
.kk-side-help a{font-size:13.5px;color:var(--kk-accent);font-weight:600}
.kk-side-help a:hover{color:#fff}

/* ================= 步骤条 ================= */
.kk-steps{list-style:none;margin:0;padding:0}
.kk-step{position:relative;display:flex;gap:20px;padding-bottom:40px}
.kk-step:last-child{padding-bottom:0}
.kk-step::before{
  content:"";position:absolute;left:19px;top:48px;bottom:8px;width:1px;background:var(--kk-line);
}
.kk-step:last-child::before{display:none}
.kk-step-num{
  position:relative;z-index:1;flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  background:#fff;border:1px solid var(--kk-line);color:var(--kk-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
  box-shadow:0 1px 2px rgba(23,32,46,.05);
}
.kk-step-body{flex:1 1 auto;padding-top:4px;min-width:0}
.kk-step-body h3{margin-bottom:10px}
.kk-step-body p{color:var(--kk-sub);font-size:15.5px;line-height:1.8;margin:0 0 8px}
.kk-step-media{margin-top:18px;border-radius:var(--kk-r-img);overflow:hidden;border:1px solid var(--kk-line);box-shadow:var(--kk-shadow)}
.kk-step-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.kk-step-media figcaption{font-size:13px;color:var(--kk-weak);padding:10px 14px;background:#fff;border-top:1px solid var(--kk-line)}

/* ================= 信息卡 / 列表 ================= */
.kk-card{
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);
  box-shadow:var(--kk-shadow);padding:24px;transition:box-shadow var(--kk-trans),transform var(--kk-trans);
}
.kk-card:hover{box-shadow:var(--kk-shadow-hover);transform:translateY(-2px)}
.kk-note-card{
  background:var(--kk-mist);border:1px solid #D8E3F2;border-radius:var(--kk-r-card);
  padding:32px;margin-top:8px;
}
.kk-note-card h2{font-size:22px;margin-bottom:16px}
.kk-note-list{list-style:none;margin:0;padding:0}
.kk-note-list li{
  position:relative;padding-left:26px;margin-bottom:12px;font-size:15.5px;line-height:1.8;color:var(--kk-sub);
}
.kk-note-list li:last-child{margin-bottom:0}
.kk-note-list li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:12px;border-radius:3px;
  background:var(--kk-primary);opacity:.85;
}
.kk-note-list strong{color:var(--kk-ink)}

.kk-spec{margin:0;border-top:1px solid var(--kk-line)}
.kk-spec-row{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--kk-line)}
.kk-spec-row dt{font-size:15px;font-weight:600;color:var(--kk-ink)}
.kk-spec-row dd{margin:0;font-size:15px;color:var(--kk-sub);line-height:1.75}

.kk-info-card{
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);
  box-shadow:var(--kk-shadow);overflow:hidden;
}
.kk-info-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.kk-info-card-body{padding:24px}
.kk-info-card-body h3{margin-bottom:10px}
.kk-info-card-body p{font-size:14.5px;color:var(--kk-sub);line-height:1.8}
.kk-info-list{list-style:none;margin:16px 0 0;padding:0}
.kk-info-list li{display:flex;gap:10px;font-size:14px;color:var(--kk-sub);padding:7px 0;border-top:1px solid var(--kk-line)}
.kk-info-list i{color:var(--kk-primary);font-size:13px;margin-top:5px}

/* ================= 数字指标 ================= */
.kk-metrics{background:var(--kk-deep);padding:56px 0}
.kk-metrics .grid-x{align-items:stretch}
.kk-metric{padding:8px 0}
.kk-metric strong{font-size:42px;font-weight:700;color:var(--kk-accent);line-height:1;letter-spacing:-.02em}
.kk-metric span{font-size:15px;color:rgba(255,255,255,.72);margin-left:8px}
.kk-metric p{margin:12px 0 0;font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.72)}
.kk-metric + .kk-metric{}
@media (min-width:640px){
  .kk-metric{padding-left:24px;border-left:1px solid rgba(255,255,255,.14)}
  .kk-metrics .cell:first-child .kk-metric{border-left:0;padding-left:0}
}

/* ================= FAQ ================= */
.kk-faq-wrap{max-width:900px;margin:0 auto}
.kk-faq-card{
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);
  box-shadow:var(--kk-shadow);overflow:hidden;
}
.kk-faq-item{border-top:1px solid var(--kk-line);transition:box-shadow var(--kk-trans)}
.kk-faq-item:first-child{border-top:0}
.kk-faq-item[open]{box-shadow:inset 3px 0 0 0 var(--kk-primary)}
.kk-faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:16px 24px;font-size:17px;font-weight:600;color:var(--kk-ink);
  transition:color var(--kk-trans);
}
.kk-faq-item summary::-webkit-details-marker{display:none}
.kk-faq-item summary::after{
  content:"+";flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  background:var(--kk-mist);color:var(--kk-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;
  transition:transform var(--kk-trans),background var(--kk-trans),color var(--kk-trans);
}
.kk-faq-item summary:hover{color:var(--kk-primary)}
.kk-faq-item[open] summary{color:var(--kk-primary)}
.kk-faq-item[open] summary::after{transform:rotate(45deg);background:var(--kk-primary);color:#fff}
.kk-faq-ans{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--kk-sub)}

/* ================= CTA ================= */
.kk-cta{background:var(--kk-mist);padding:72px 0}
.kk-cta-inner{
  background:#fff;border:1px solid var(--kk-line);border-radius:18px;box-shadow:var(--kk-shadow);
  padding:40px;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.kk-cta-inner h2{margin-bottom:12px}
.kk-cta-inner p{color:var(--kk-sub);font-size:15.5px;line-height:1.8;margin:0}
.kk-cta-form{display:grid;gap:12px}
.kk-cta-form input{
  height:44px;border-radius:10px;border:1px solid var(--kk-line);background:#fff;
  padding:0 16px;font-size:15px;color:var(--kk-ink);outline:none;
  transition:border-color var(--kk-trans),box-shadow var(--kk-trans);
}
.kk-cta-form input::placeholder{color:var(--kk-weak)}
.kk-cta-form input:focus{border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.12)}
.kk-cta-note{font-size:12.5px;color:var(--kk-weak);margin:0}

/* ================= 页脚 ================= */
.kk-footer{background:var(--kk-deep);color:rgba(255,255,255,.72);padding:64px 0 0}
.kk-footer-row{padding-bottom:44px}
.kk-footer-logo{display:inline-flex;align-items:center;gap:9px;font-size:19px;font-weight:700;color:#fff;margin-bottom:14px}
.kk-footer-logo svg{width:24px;height:24px;flex:0 0 24px}
.kk-footer-logo:hover{color:#fff}
.kk-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.7)}
.kk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.kk-footer-links{list-style:none;margin:0;padding:0}
.kk-footer-links li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7)}
.kk-footer-links a{color:rgba(255,255,255,.7)}
.kk-footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.kk-footer-qr{
  margin-top:16px;width:96px;height:96px;border-radius:10px;border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(255,255,255,.55);
}
.kk-footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ================= 响应式 ================= */
@media (max-width:1199.98px){
  .kk-search input{width:164px}
  .kk-menu{gap:22px}
}
@media (max-width:1023.98px){
  .kk-menu,.kk-actions{display:none}
  .kk-burger{display:block}
  .kk-nav{height:56px;justify-content:space-between}
  .kk-section{padding:72px 0}
  .kk-hero-narrow{padding:44px 0 40px}
  .kk-side-inner{position:static;margin-bottom:28px}
  .kk-anchor-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .kk-anchor-list li{margin-bottom:0;flex:0 0 auto}
  .kk-anchor-list a{
    white-space:nowrap;background:var(--kk-mist-2);border-radius:999px;padding:8px 16px;font-size:14px;
  }
  .kk-side-help{margin-top:16px}
  .kk-cta-inner{grid-template-columns:1fr;gap:28px;padding:32px}
  .kk-metric{border-left:0;padding-left:0}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  :root{--kk-fs-h2:22px;--kk-fs-h3:18px}
  .kk-section{padding:56px 0}
  .kk-hero-narrow h1{font-size:28px}
  .kk-hero-narrow .kk-hero-sub{font-size:15.5px}
  .kk-sec-head{margin-bottom:28px}
  .kk-card{padding:20px}
  .kk-note-card{padding:24px 20px}
  .kk-note-card h2{font-size:19px}
  .kk-spec-row{grid-template-columns:1fr;gap:6px;padding:16px 0}
  .kk-step{gap:14px;padding-bottom:32px}
  .kk-step::before{left:17px;top:44px}
  .kk-step-num{flex:0 0 36px;width:36px;height:36px;font-size:12px}
  .kk-step-body h3{font-size:18px}
  .kk-metric strong{font-size:34px}
  .kk-faq-item summary{font-size:16px;padding:14px 18px}
  .kk-faq-ans{padding:0 18px 18px}
  .kk-cta{padding:56px 0}
  .kk-cta-inner{padding:24px}
  .kk-footer{padding:48px 0 0}
  .kk-footer-row{padding-bottom:32px}
  .kk-footer-bottom{flex-direction:column;gap:6px}
  .kk-breadcrumb{font-size:13px}
}
@media (max-width:519.98px){
  .kk-hero-tags{gap:8px}
  .kk-hero-tags span{font-size:12.5px;padding:5px 12px}
  .kk-btn-lg{width:100%}
  .kk-cta-form input{height:42px}
  .kk-cta-form .kk-btn{width:100%}
}

/* roulang page: category3 */
:root{
  --brand:#2E6BE6;
  --brand-dark:#1B4FC0;
  --mist:#E8EEF6;
  --accent:#FF8A3D;
  --ink:#17202E;
  --ink-2:#4A5768;
  --ink-3:#8A96A8;
  --line:#E4EAF2;
  --page:#F6F8FB;
  --card:#FFFFFF;
  --deep:#101B2E;
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
  --r-card:14px; --r-btn:10px; --r-input:10px; --r-pill:999px; --r-hero:20px;
  --sh-card:0 1px 2px rgba(23,32,46,.04),0 12px 28px -12px rgba(23,32,46,.14);
  --sh-hover:0 18px 40px -16px rgba(23,32,46,.18);
  --fz-h1:clamp(30px,3.4vw,52px);
  --fz-h2:30px;
  --fz-h3:20px;
  --fz-body:16px;
  --fz-small:14px;
}

*,*::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","Hiragino Sans GB",sans-serif;
  font-size:var(--fz-body);
  line-height:1.75;
  color:var(--ink);
  background:var(--page);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
a:hover{color:var(--brand-dark);}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;color:var(--ink);font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
input,textarea,button{font-family:inherit;}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px;}

.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media screen and (min-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px;}
}

/* ---------- 导航 ---------- */
.kk-header{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 8px rgba(23,32,46,.05);
}
.kk-nav{display:flex;align-items:center;gap:var(--s6);height:68px;}
.kk-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.kk-logo svg{width:24px;height:24px;flex:0 0 24px;}
.kk-logo span{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.kk-logo:hover span{color:var(--brand);}
.kk-menu{display:flex;align-items:center;gap:28px;flex:1 1 auto;}
.kk-menu a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:16px;font-weight:500;color:var(--ink-2);
}
.kk-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.kk-menu a:hover{color:var(--brand);}
.kk-menu a:hover::after,.kk-menu a.is-active::after{transform:scaleX(1);}
.kk-menu a.is-active{color:var(--brand);font-weight:600;}
.kk-actions{display:flex;align-items:center;gap:var(--s4);flex:0 0 auto;}
.kk-search{position:relative;display:flex;align-items:center;}
.kk-search input{
  width:190px;height:36px;border-radius:var(--r-pill);
  border:1px solid transparent;background:#F1F5FA;
  padding:0 38px 0 16px;font-size:14px;color:var(--ink);
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease,width .2s ease;
}
.kk-search input::placeholder{color:var(--ink-3);}
.kk-search input:focus{width:220px;background:#FFFFFF;border-color:var(--brand);box-shadow:0 0 0 4px rgba(46,107,230,.12);outline:none;}
.kk-search i{position:absolute;right:14px;font-size:14px;color:var(--ink-3);pointer-events:none;}
.kk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.kk-btn-primary{background:var(--brand);color:#FFFFFF;box-shadow:0 8px 20px -10px rgba(46,107,230,.75);}
.kk-btn-primary:hover{background:var(--brand-dark);color:#FFFFFF;transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(27,79,192,.7);}
.kk-btn-primary:active{transform:translateY(0);opacity:.92;}
.kk-btn-ghost{background:#FFFFFF;color:var(--brand);border-color:var(--line);}
.kk-btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}
.kk-btn-accent{background:var(--accent);color:#FFFFFF;box-shadow:0 8px 20px -10px rgba(255,138,61,.8);}
.kk-btn-accent:hover{background:#F0762A;color:#FFFFFF;transform:translateY(-1px);}
.kk-burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#FFFFFF;
  border-radius:10px;align-items:center;justify-content:center;margin-left:auto;
}
.kk-burger span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.kk-burger span::before,.kk-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.kk-burger span::before{top:-6px;}
.kk-burger span::after{top:6px;}
.kk-overlay{position:fixed;inset:0;background:rgba(16,27,46,.45);z-index:70;}
.kk-overlay[hidden]{display:none;}
.kk-drawer{
  position:fixed;top:0;right:0;bottom:0;width:310px;max-width:86vw;background:#FFFFFF;z-index:80;
  transform:translateX(102%);transition:transform .28s ease;
  padding:var(--s5);display:flex;flex-direction:column;gap:var(--s4);overflow-y:auto;
  box-shadow:-18px 0 48px -20px rgba(23,32,46,.35);
}
.kk-drawer.is-open{transform:translateX(0);}
.kk-drawer-head{display:flex;align-items:center;justify-content:space-between;}
.kk-drawer-head .kk-logo span{font-size:17px;}
.kk-drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#FFFFFF;color:var(--ink-2);font-size:16px;}
.kk-drawer-menu li{border-bottom:1px solid var(--line);}
.kk-drawer-menu a{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:16px;color:var(--ink-2);font-weight:500;}
.kk-drawer-menu a.is-active{color:var(--brand);font-weight:600;}
.kk-drawer .kk-search input{width:100%;}
.kk-drawer .kk-btn{width:100%;}

@media screen and (max-width:1023px){
  .kk-nav{height:56px;gap:var(--s4);}
  .kk-menu,.kk-actions{display:none;}
  .kk-burger{display:inline-flex;}
}

/* ---------- 通用板块 ---------- */
.kk-section{padding:96px 0;}
.kk-section--tight{padding:72px 0;}
.kk-section--mist{background:var(--mist);}
.kk-section--white{background:#FFFFFF;}
.kk-section-head{max-width:720px;margin-bottom:var(--s7);}
.kk-section-head h2{font-size:var(--fz-h2);margin-bottom:var(--s3);}
.kk-section-head p{font-size:16px;color:var(--ink-2);line-height:1.8;}
.kk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);background:var(--mist);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:var(--s4);
}
.kk-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.kk-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--mist);color:var(--brand);font-size:12px;font-weight:600;
}
.kk-badge--accent{background:rgba(255,138,61,.14);color:#D9661F;}

/* ---------- 分类页窄版 Hero ---------- */
.kk-hero-sub{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#F1F5FA 0%,var(--mist) 100%);
  padding:56px 0 52px;
}
.kk-hero-sub::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,rgba(46,107,230,.14) 1px,transparent 0);
  background-size:22px 22px;opacity:.5;
}
.kk-hero-sub .grid-container{position:relative;z-index:2;}
.kk-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:var(--s4);}
.kk-crumb a{color:var(--ink-2);}
.kk-crumb a:hover{color:var(--brand);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}
.kk-crumb i{font-size:10px;color:var(--ink-3);}
.kk-hero-sub h1{font-size:clamp(28px,2.6vw,40px);max-width:820px;margin-bottom:var(--s4);}
.kk-hero-sub .kk-hero-note{font-size:16px;color:var(--ink-2);max-width:660px;line-height:1.8;}
.kk-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--s5);}
.kk-hero-tags span{
  display:inline-flex;align-items:center;gap:6px;
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:6px 14px;font-size:13px;color:var(--ink-2);
}
.kk-hero-tags i{color:var(--brand);font-size:12px;}

/* ---------- 卡片 ---------- */
.kk-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:var(--s5);box-shadow:var(--sh-card);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  height:100%;display:flex;flex-direction:column;
}
.kk-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D6E0EE;}
.kk-card h3{font-size:var(--fz-h3);font-weight:600;margin-bottom:var(--s3);}
.kk-card p{font-size:14px;line-height:1.75;color:var(--ink-2);}
.kk-card .kk-card-icon{
  width:44px;height:44px;border-radius:12px;background:var(--mist);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:var(--s4);
}
.kk-media{border-radius:10px;overflow:hidden;margin-bottom:var(--s5);}
.kk-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.kk-media--tall img{aspect-ratio:3/2;}

.kk-card--stat{
  background:var(--mist);border-color:#D8E2F0;
  justify-content:center;
}
.kk-card--stat h3{color:var(--ink);}
.kk-stat-row{display:flex;gap:var(--s6);flex-wrap:wrap;margin-top:var(--s4);}
.kk-stat{min-width:110px;}
.kk-stat strong{display:block;font-size:32px;font-weight:700;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums;}
.kk-stat span{display:block;font-size:13px;color:var(--ink-2);margin-top:4px;}

.kk-points{margin-top:var(--s4);display:flex;flex-direction:column;gap:10px;}
.kk-points li{position:relative;padding-left:22px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.kk-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:#FFFFFF;border:2px solid var(--brand);
}

/* ---------- 对比表 ---------- */
.kk-table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-card);}
.kk-table{
  width:100%;min-width:760px;border-collapse:collapse;background:#FFFFFF;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.kk-table caption{text-align:left;font-size:13px;color:var(--ink-3);padding:0 0 12px;}
.kk-table th,.kk-table td{padding:16px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);vertical-align:top;}
.kk-table thead th{background:var(--mist);font-weight:600;font-size:14px;color:var(--ink);white-space:nowrap;}
.kk-table tbody tr:nth-child(even){background:#FAFCFE;}
.kk-table tbody tr:last-child td{border-bottom:0;}
.kk-table td strong{font-weight:600;color:var(--ink);}
.kk-table td span{color:var(--ink-2);}

/* ---------- FAQ ---------- */
.kk-faq{background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;}
.kk-faq-item+.kk-faq-item{border-top:1px solid var(--line);}
.kk-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--s4);
  min-height:56px;padding:14px 24px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);position:relative;
}
.kk-faq-q:hover{color:var(--brand);}
.kk-faq-q .kk-faq-mark{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;transition:transform .25s ease,border-color .25s ease;
}
.kk-faq-item.is-open .kk-faq-q{color:var(--brand);}
.kk-faq-item.is-open .kk-faq-mark{transform:rotate(45deg);border-color:var(--brand);}
.kk-faq-item.is-open .kk-faq-q::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);
}
.kk-faq-a{display:none;padding:0 24px 20px 68px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.kk-faq-item.is-open .kk-faq-a{display:block;}

/* ---------- 交叉链接 ---------- */
.kk-cross{display:flex;flex-direction:column;gap:var(--s3);}
.kk-cross a{
  display:flex;align-items:center;justify-content:space-between;gap:var(--s3);
  background:#FFFFFF;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;color:var(--ink);font-size:15px;font-weight:600;
  box-shadow:0 1px 2px rgba(23,32,46,.04);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,color .22s ease;
}
.kk-cross a i{color:var(--ink-3);font-size:14px;transition:transform .22s ease,color .22s ease;}
.kk-cross a span small{display:block;font-size:13px;font-weight:400;color:var(--ink-3);margin-top:2px;}
.kk-cross a:hover{transform:translateY(-2px);border-color:#D6E0EE;color:var(--brand);box-shadow:var(--sh-hover);}
.kk-cross a:hover i{transform:translateX(4px);color:var(--brand);}

/* ---------- CTA ---------- */
.kk-cta{background:var(--mist);border-radius:var(--r-hero);padding:48px;border:1px solid #DCE5F1;}
.kk-cta h2{font-size:26px;margin-bottom:var(--s3);}
.kk-cta p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.kk-form{display:flex;flex-direction:column;gap:var(--s3);}
.kk-form-row{display:flex;gap:var(--s3);flex-wrap:wrap;}
.kk-input{
  flex:1 1 180px;height:44px;border-radius:var(--r-input);border:1px solid var(--line);
  background:#FFFFFF;padding:0 16px;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.kk-input::placeholder{color:var(--ink-3);}
.kk-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(46,107,230,.12);}
.kk-form .kk-btn{height:44px;flex:0 0 auto;}
.kk-form-note{font-size:13px;color:var(--ink-3);}

/* ---------- 页脚 ---------- */
.kk-footer{background:var(--deep);color:#E8EEF6;padding:64px 0 0;margin-top:0;}
.kk-footer-row{padding-bottom:40px;}
.kk-footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:var(--s4);color:#FFFFFF;}
.kk-footer-logo svg{width:24px;height:24px;}
.kk-footer-logo span{font-size:19px;font-weight:700;color:#FFFFFF;}
.kk-footer p{font-size:14px;line-height:1.9;color:#A9B6C9;}
.kk-footer h4{font-size:15px;font-weight:600;color:#FFFFFF;margin-bottom:var(--s4);}
.kk-footer-links li{font-size:14px;line-height:1.9;color:#A9B6C9;}
.kk-footer-links a{color:#A9B6C9;}
.kk-footer-links a:hover{color:#FFFFFF;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}
.kk-footer-qr{
  margin-top:var(--s4);width:104px;height:104px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.24);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:#7F8CA1;text-align:center;line-height:1.6;
}
.kk-footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13px;color:#8A96A8;
}

@media screen and (max-width:1023px){
  .kk-section{padding:72px 0;}
  .kk-section--tight{padding:56px 0;}
  .kk-hero-sub{padding:40px 0 40px;}
  .kk-cta{padding:36px;border-radius:16px;}
  .kk-faq-a{padding-left:56px;}
  .kk-section-head{margin-bottom:var(--s6);}
}
@media screen and (max-width:767px){
  .kk-section{padding:56px 0;}
  .kk-section--tight{padding:48px 0;}
  .kk-section-head h2{font-size:22px;}
  .kk-card{padding:20px;}
  .kk-card h3{font-size:18px;}
  .kk-faq-q{font-size:16px;padding:14px 18px;}
  .kk-faq-a{padding:0 18px 18px 18px;}
  .kk-faq-item.is-open .kk-faq-q::before{top:8px;bottom:8px;}
  .kk-cta{padding:24px;}
  .kk-cta h2{font-size:21px;}
  .kk-stat strong{font-size:26px;}
  .kk-footer{padding-top:48px;}
}
@media screen and (max-width:519px){
  .kk-hero-sub h1{font-size:24px;}
  .kk-hero-sub .kk-hero-note{font-size:15px;}
  .kk-hero-tags span{font-size:12px;}
  .kk-form-row{flex-direction:column;}
  .kk-input{width:100%;flex:1 1 100%;}
  .kk-form .kk-btn{width:100%;}
  .kk-footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category4 */
:root{
  --kk-primary:#2E6BE6;
  --kk-primary-dark:#1B4FC0;
  --kk-mist:#E8EEF6;
  --kk-accent:#FF8A3D;
  --kk-ink:#17202E;
  --kk-sub:#4A5768;
  --kk-weak:#8A96A8;
  --kk-line:#E4EAF2;
  --kk-bg:#F6F8FB;
  --kk-card:#FFFFFF;
  --kk-dark:#101B2E;
  --kk-r-card:14px;
  --kk-r-btn:10px;
  --kk-r-input:10px;
  --kk-r-badge:999px;
  --kk-r-hero:20px;
  --kk-sh-1:0 1px 2px rgba(23,32,46,.04),0 12px 28px -12px rgba(23,32,46,.14);
  --kk-sh-2:0 18px 40px -16px rgba(23,32,46,.18);
  --kk-sp-1:4px; --kk-sp-2:8px; --kk-sp-3:12px; --kk-sp-4:16px;
  --kk-sp-5:24px; --kk-sp-6:32px; --kk-sp-7:48px; --kk-sp-8:64px; --kk-sp-9:96px;
}

/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--kk-ink);
  background:var(--kk-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700;color:var(--kk-ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--kk-primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;}
a:hover{color:var(--kk-primary-dark);}
img{max-width:100%;display:block;}
button{font-family:inherit;font-size:inherit;}
input{font-family:inherit;}
:focus-visible{outline:3px solid var(--kk-primary);outline-offset:2px;border-radius:4px;}

/* ===== 通用容器与板块 ===== */
.kk-section{padding:96px 0;}
.kk-section--tight{padding:72px 0;}
.kk-section--mist{background:var(--kk-mist);}
.kk-section--white{background:var(--kk-card);}
.kk-section-head{margin-bottom:40px;max-width:760px;}
.kk-section-head h2{font-size:30px;}
.kk-section-head p{margin-top:12px;color:var(--kk-sub);font-size:16px;}
.kk-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--kk-primary);background:var(--kk-mist);
  border-radius:var(--kk-r-badge);padding:5px 14px;margin-bottom:16px;
}
.kk-eyebrow i{font-size:11px;}
.kk-badge{
  display:inline-block;font-size:12px;font-weight:600;line-height:1.6;
  color:var(--kk-primary);background:var(--kk-mist);
  border-radius:var(--kk-r-badge);padding:3px 12px;
}

/* ===== 导航 ===== */
.kk-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--kk-line);
  box-shadow:0 2px 8px rgba(23,32,46,.05);
}
.kk-nav{display:flex;align-items:center;gap:28px;height:68px;}
.kk-logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--kk-ink);letter-spacing:-.01em;flex:0 0 auto;}
.kk-logo svg{width:24px;height:24px;flex:0 0 24px;}
.kk-logo:hover{color:var(--kk-ink);}
.kk-menu{display:flex;align-items:center;gap:28px;}
.kk-menu a{
  position:relative;display:inline-block;padding:22px 0;
  font-size:16px;font-weight:500;color:var(--kk-ink);white-space:nowrap;
}
.kk-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:12px;height:2px;border-radius:2px;
  background:transparent;transition:background-color .18s ease;
}
.kk-menu a:hover{color:var(--kk-primary);}
.kk-menu a:hover::after,.kk-menu a.is-active::after{background:var(--kk-primary);}
.kk-menu a.is-active{color:var(--kk-primary);font-weight:600;}
.kk-actions{margin-left:auto;display:flex;align-items:center;gap:16px;}
.kk-search{position:relative;}
.kk-search input{
  width:196px;height:36px;border-radius:var(--kk-r-badge);
  border:1px solid transparent;background:#F1F5FA;
  padding:0 38px 0 16px;font-size:14px;color:var(--kk-ink);
  transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.kk-search input::placeholder{color:var(--kk-weak);}
.kk-search input:focus{outline:none;background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.14);}
.kk-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--kk-weak);font-size:13px;pointer-events:none;}
.kk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:38px;padding:0 20px;border:0;border-radius:var(--kk-r-btn);
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease,opacity .18s ease;
}
.kk-btn-primary{background:var(--kk-primary);color:#fff;box-shadow:0 8px 18px -10px rgba(46,107,230,.7);}
.kk-btn-primary:hover{background:var(--kk-primary-dark);color:#fff;transform:translateY(-1px);}
.kk-btn-primary:active{transform:none;opacity:.9;}
.kk-btn-ghost{background:#fff;color:var(--kk-primary);border:1px solid var(--kk-line);}
.kk-btn-ghost:hover{background:var(--kk-mist);color:var(--kk-primary-dark);border-color:#CFDCEE;transform:translateY(-1px);}
.kk-btn-ghost:active{transform:none;opacity:.9;}
.kk-btn-lg{height:46px;padding:0 28px;font-size:16px;}
.kk-burger{display:none;width:40px;height:40px;border:1px solid var(--kk-line);border-radius:10px;background:#fff;cursor:pointer;margin-left:auto;align-items:center;justify-content:center;}
.kk-burger span,.kk-burger span::before,.kk-burger span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--kk-ink);content:"";position:relative;
}
.kk-burger span::before{position:absolute;top:-6px;}
.kk-burger span::after{position:absolute;top:6px;}

/* 移动端抽屉 */
.kk-mask{position:fixed;inset:0;background:rgba(16,27,46,.45);opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:70;}
.kk-mask.is-open{opacity:1;visibility:visible;}
.kk-drawer{
  position:fixed;top:0;right:0;width:308px;max-width:86vw;height:100%;
  background:#fff;z-index:80;padding:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
  box-shadow:-16px 0 40px -20px rgba(23,32,46,.3);
}
.kk-drawer.is-open{transform:translateX(0);}
.kk-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.kk-drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--kk-line);background:#fff;color:var(--kk-sub);cursor:pointer;}
.kk-drawer-links{display:block;}
.kk-drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;border-bottom:1px solid var(--kk-line);
  font-size:16px;font-weight:500;color:var(--kk-ink);
}
.kk-drawer-links a:hover,.kk-drawer-links a.is-active{color:var(--kk-primary);}
.kk-drawer .kk-btn{width:100%;margin-top:20px;}
.kk-drawer-search{position:relative;margin-top:8px;}
.kk-drawer-search input{width:100%;height:44px;border-radius:var(--kk-r-input);border:1px solid var(--kk-line);padding:0 40px 0 14px;font-size:15px;background:#F8FAFD;}
.kk-drawer-search input:focus{outline:none;background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.13);}
.kk-drawer-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--kk-weak);font-size:14px;}

/* ===== 分类页窄版 Hero ===== */
.kk-hero-narrow{
  position:relative;
  padding:60px 0 56px;
  border-bottom:1px solid var(--kk-line);
  background:
    linear-gradient(96deg,rgba(232,238,246,.96) 0%,rgba(232,238,246,.9) 44%,rgba(232,238,246,.62) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.kk-hero-narrow h1{
  font-size:clamp(28px,3.2vw,44px);
  letter-spacing:-.015em;
  max-width:820px;
  margin-bottom:16px;
}
.kk-hero-narrow .kk-hero-sub{
  max-width:720px;color:var(--kk-sub);font-size:17px;line-height:1.75;
}
.kk-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--kk-weak);margin-bottom:20px;flex-wrap:wrap;}
.kk-crumb a{color:var(--kk-sub);}
.kk-crumb a:hover{color:var(--kk-primary);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.kk-crumb i{font-size:10px;color:var(--kk-weak);}
.kk-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

/* ===== 双栏专题 ===== */
.kk-split{padding:80px 0;}
.kk-article-body h2{
  position:relative;font-size:30px;letter-spacing:-.012em;
  padding-left:16px;margin:48px 0 14px;
}
.kk-article-body h2:first-of-type{margin-top:0;}
.kk-article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:3px;background:var(--kk-primary);
}
.kk-article-body h3{font-size:20px;margin:28px 0 10px;}
.kk-article-body p{color:var(--kk-sub);font-size:16.5px;line-height:1.8;margin-bottom:16px;}
.kk-article-body p strong{color:var(--kk-ink);font-weight:600;}
.kk-pointlist{margin:18px 0 26px;display:grid;gap:12px;}
.kk-pointlist li{
  position:relative;padding-left:30px;color:var(--kk-sub);font-size:15.5px;line-height:1.75;
}
.kk-pointlist li::before{
  content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--kk-mist);border:2px solid var(--kk-primary);
}
.kk-checklist{margin:18px 0 26px;display:grid;gap:10px;}
.kk-checklist li{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--kk-line);border-radius:12px;
  padding:14px 18px;font-size:15.5px;color:var(--kk-sub);line-height:1.7;
  box-shadow:0 1px 2px rgba(23,32,46,.03);
}
.kk-checklist li i{color:var(--kk-primary);font-size:14px;margin-top:6px;flex:0 0 auto;}
.kk-figure{margin:26px 0;}
.kk-figure img{width:100%;border-radius:var(--kk-r-card);object-fit:cover;box-shadow:var(--kk-sh-1);}
.kk-figure figcaption{margin-top:10px;font-size:13px;color:var(--kk-weak);text-align:center;}
.kk-deflist{
  margin:22px 0 8px;border-top:1px solid var(--kk-line);
}
.kk-deflist .kk-defrow{
  display:grid;grid-template-columns:180px 1fr;gap:20px;
  padding:16px 0;border-bottom:1px solid var(--kk-line);
}
.kk-deflist dt{font-weight:600;color:var(--kk-ink);font-size:15.5px;}
.kk-deflist dd{margin:0;color:var(--kk-sub);font-size:15.5px;line-height:1.75;}

/* 侧栏 */
.kk-aside{position:sticky;top:92px;display:grid;gap:20px;}
.kk-sidecard{
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);
  padding:24px;box-shadow:var(--kk-sh-1);
}
.kk-sidecard h3{font-size:18px;margin-bottom:6px;}
.kk-sidecard > p{color:var(--kk-sub);font-size:14px;line-height:1.75;margin-bottom:14px;}
.kk-sidelist{display:grid;gap:12px;}
.kk-sidelist li{
  display:flex;gap:10px;font-size:14.5px;color:var(--kk-sub);line-height:1.7;
}
.kk-sidelist li span.kk-dot{
  flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--kk-primary);margin-top:9px;
}
.kk-sidecard--dark{background:var(--kk-dark);border-color:var(--kk-dark);color:#fff;}
.kk-sidecard--dark h3{color:#fff;}
.kk-sidecard--dark p,.kk-sidecard--dark li{color:rgba(255,255,255,.76);}
.kk-sidecard--dark .kk-sidelist li span.kk-dot{background:var(--kk-accent);}
.kk-sidecard--dark .kk-side-link{border-color:rgba(255,255,255,.16);}
.kk-sidecard--dark .kk-side-link:hover{background:rgba(255,255,255,.08);}
.kk-sidecard--dark .kk-side-link strong{color:#fff;}
.kk-sidecard--dark .kk-side-link span{color:rgba(255,255,255,.6);}
.kk-sidecard--dark .kk-side-link i{color:rgba(255,255,255,.55);}
.kk-side-links{display:grid;gap:12px;}
.kk-side-link{
  display:flex;align-items:center;gap:12px;
  border:1px solid var(--kk-line);border-radius:12px;padding:14px 16px;
  transition:background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.kk-side-link:hover{background:#F8FAFD;border-color:#CFDCEE;transform:translateY(-1px);text-decoration:none;}
.kk-side-link .kk-side-link-text{flex:1 1 auto;min-width:0;}
.kk-side-link strong{display:block;font-size:15px;font-weight:600;color:var(--kk-ink);letter-spacing:-.01em;}
.kk-side-link span{display:block;font-size:13px;color:var(--kk-weak);margin-top:2px;}
.kk-side-link i{color:var(--kk-weak);font-size:13px;transition:transform .18s ease,color .18s ease;}
.kk-side-link:hover i{transform:translateX(4px);color:var(--kk-primary);}
.kk-sidecard .kk-btn{width:100%;margin-top:16px;}

/* ===== 数字指标带 ===== */
.kk-metrics{background:var(--kk-dark);padding:72px 0;}
.kk-metrics .kk-metrics-title{
  font-size:15px;font-weight:600;color:rgba(255,255,255,.62);letter-spacing:.04em;margin-bottom:28px;
}
.kk-metrics-row{border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
.kk-metric{padding-right:16px;}
.kk-metric-num{
  font-size:clamp(30px,3vw,42px);font-weight:700;color:var(--kk-accent);
  line-height:1.15;display:inline-block;font-variant-numeric:tabular-nums;
}
.kk-metric-unit{font-size:16px;font-weight:600;color:var(--kk-accent);margin-left:4px;}
.kk-metric p{margin-top:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72);}

/* ===== FAQ ===== */
.kk-faq-card{
  background:#fff;border:1px solid var(--kk-line);border-radius:var(--kk-r-card);
  box-shadow:var(--kk-sh-1);overflow:hidden;
}
.kk-faq-item + .kk-faq-item{border-top:1px solid var(--kk-line);}
.kk-faq-q{
  position:relative;width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 24px;text-align:left;
  font-size:17px;font-weight:600;color:var(--kk-ink);line-height:1.5;
  transition:color .18s ease,background-color .18s ease;
}
.kk-faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .2s ease;
}
.kk-faq-q:hover{color:var(--kk-primary);background:#F8FAFD;}
.kk-faq-icon{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--kk-line);background:#fff;
  transition:transform .24s ease,border-color .24s ease;
}
.kk-faq-icon::before,.kk-faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--kk-sub);border-radius:2px;
  transform:translate(-50%,-50%);
}
.kk-faq-icon::before{width:11px;height:2px;}
.kk-faq-icon::after{width:2px;height:11px;}
.kk-faq-item.is-open .kk-faq-q{color:var(--kk-primary);}
.kk-faq-item.is-open .kk-faq-q::before{background:var(--kk-primary);}
.kk-faq-item.is-open .kk-faq-icon{transform:rotate(45deg);border-color:var(--kk-primary);}
.kk-faq-item.is-open .kk-faq-icon::before,
.kk-faq-item.is-open .kk-faq-icon::after{background:var(--kk-primary);}
.kk-faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.kk-faq-a-inner{padding:0 24px 20px 24px;}
.kk-faq-a-inner p{font-size:15px;line-height:1.8;color:var(--kk-sub);}

/* ===== CTA ===== */
.kk-cta{background:var(--kk-mist);padding:72px 0;border-top:1px solid var(--kk-line);}
.kk-cta h2{font-size:clamp(24px,2.4vw,32px);letter-spacing:-.012em;}
.kk-cta p{margin-top:12px;color:var(--kk-sub);font-size:16px;max-width:560px;}
.kk-cta-form{display:flex;gap:12px;flex-wrap:wrap;align-items:center;justify-content:flex-end;}
.kk-cta-form input{
  flex:1 1 220px;min-width:0;height:44px;border-radius:var(--kk-r-input);
  border:1px solid var(--kk-line);background:#fff;padding:0 16px;
  font-size:15px;color:var(--kk-ink);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.kk-cta-form input::placeholder{color:var(--kk-weak);}
.kk-cta-form input:focus{outline:none;background:#fff;border-color:var(--kk-primary);box-shadow:0 0 0 4px rgba(46,107,230,.14);}
.kk-cta-form .kk-btn{height:44px;padding:0 26px;}
.kk-cta-note{margin-top:14px;font-size:13px;color:var(--kk-weak);}

/* ===== 页脚 ===== */
.kk-footer{background:var(--kk-dark);color:rgba(255,255,255,.76);padding:64px 0 28px;}
.kk-footer-row{padding-bottom:40px;}
.kk-footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#fff;letter-spacing:-.01em;margin-bottom:16px;}
.kk-footer-logo svg{width:24px;height:24px;flex:0 0 24px;}
.kk-footer-logo:hover{color:#fff;}
.kk-footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);}
.kk-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.kk-footer-links{display:grid;gap:10px;}
.kk-footer-links li,.kk-footer-links a{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);}
.kk-footer-links a:hover{color:#fff;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.kk-footer-qr{
  margin-top:16px;width:96px;height:96px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(255,255,255,.55);
}
.kk-footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .kk-section{padding:80px 0;}
  .kk-split{padding:64px 0;}
}
@media (max-width:1023px){
  .kk-menu,.kk-actions{display:none;}
  .kk-burger{display:inline-flex;}
  .kk-nav{height:60px;}
  .kk-aside{position:static;}
  .kk-hero-narrow{padding:44px 0 40px;}
  .kk-section{padding:72px 0;}
  .kk-article-body h2{font-size:26px;margin-top:40px;}
  .kk-cta-form{justify-content:flex-start;margin-top:24px;}
}
@media (max-width:767px){
  .kk-section{padding:56px 0;}
  .kk-section--tight{padding:48px 0;}
  .kk-section-head h2{font-size:22px;}
  .kk-article-body h2{font-size:22px;padding-left:12px;}
  .kk-article-body p{font-size:16px;}
  .kk-sidecard{padding:20px;}
  .kk-faq-q{font-size:16px;padding:14px 20px;}
  .kk-faq-a-inner{padding:0 20px 18px 20px;}
  .kk-deflist .kk-defrow{grid-template-columns:1fr;gap:6px;}
  .kk-metrics{padding:56px 0;}
  .kk-cta{padding:56px 0;}
  .kk-footer{padding:48px 0 24px;}
}
@media (max-width:520px){
  .kk-hero-narrow h1{font-size:26px;}
  .kk-hero-narrow .kk-hero-sub{font-size:15.5px;}
  .kk-checklist li{padding:12px 14px;font-size:15px;}
  .kk-cta-form input{flex:1 1 100%;}
  .kk-cta-form .kk-btn{width:100%;}
  .kk-footer-bottom{flex-direction:column;gap:8px;}
}