/* roulang page: index */
:root{
  --q7bg:#f8f7f4;
  --q7ink:#181510;
  --q7mut:#6b6459;
  --q7line:#e4e0d7;
  --q7brand:#cd4526;
  --q7deep:#16362e;
  --q7card:#ffffff;
  --q7r:14px;
  --q7sh:0 14px 32px rgba(24,21,16,.08);
  --q7gap:clamp(16px,2.4vw,28px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--q7bg);color:var(--q7ink);font:400 16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
img{display:block;width:100%;height:100%;object-fit:cover}
a{color:inherit;text-decoration:none}
h1,h2,h3,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
.cukcphb-wrap{width:min(1140px,92vw);margin-inline:auto}

/* 顶栏 */
.cukcphb-top{position:sticky;top:0;z-index:50;background:rgba(248,247,244,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--q7line)}
.cukcphb-nav{display:flex;align-items:center;gap:18px;min-height:68px}
.cukcphb-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;flex:none}
.cukcphb-mark{width:36px;height:36px;border-radius:10px;background:var(--q7ink);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700}
.cukcphb-menu{display:flex;align-items:center;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.cukcphb-menu::-webkit-scrollbar{display:none}
.cukcphb-menu a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--q7mut);white-space:nowrap;transition:color .2s,background .2s}
.cukcphb-menu a:hover{color:var(--q7ink);background:#ecebe4}
.cukcphb-menu a:focus-visible{outline:2px solid var(--q7brand);outline-offset:2px}

/* 首屏 */
.cukcphb-hero{position:relative;isolation:isolate;overflow:hidden;padding:clamp(36px,6vw,72px) 0 0;background:#efebe3}
.cukcphb-hero::before{content:"";position:absolute;inset:0;z-index:-2;background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat}
.cukcphb-hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(248,247,244,.7),rgba(248,247,244,.97) 72%)}
.cukcphb-kicker{display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--q7brand);border:1px solid rgba(205,69,38,.35);border-radius:999px;padding:5px 14px}
.cukcphb-h1{margin:18px 0 0;font-size:clamp(40px,7.4vw,78px);line-height:1.05;letter-spacing:-.035em;font-weight:800}
.cukcphb-lede{max-width:740px;margin-top:18px;font-size:clamp(15px,1.5vw,17px);color:#3f3a33}
.cukcphb-acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cukcphb-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:999px;background:var(--q7ink);color:#fff;font-size:15px;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s}
.cukcphb-btn:hover{background:var(--q7brand);transform:translateY(-2px);box-shadow:0 10px 22px rgba(205,69,38,.28)}
.cukcphb-btn:focus-visible{outline:3px solid rgba(205,69,38,.5);outline-offset:3px}
.cukcphb-ghost{background:transparent;color:var(--q7ink);border:1px solid var(--q7line)}
.cukcphb-ghost:hover{background:#fff;color:var(--q7ink);border-color:var(--q7ink);box-shadow:none;transform:translateY(-2px)}
.cukcphb-params{display:grid;grid-template-columns:repeat(4,1fr);margin-top:clamp(30px,5vw,56px);background:#fff;border:1px solid var(--q7line);border-bottom:0;border-radius:var(--q7r) var(--q7r) 0 0;overflow:hidden}
.cukcphb-params li{padding:18px 20px;border-right:1px solid var(--q7line)}
.cukcphb-params li:last-child{border-right:0}
.cukcphb-params b{display:block;font-size:15px}
.cukcphb-params span{display:block;margin-top:4px;font-size:13px;color:var(--q7mut)}

/* 板块 */
.cukcphb-sec{padding:clamp(44px,6vw,80px) 0}
.cukcphb-tint{background:#fff;border-block:1px solid var(--q7line)}
.cukcphb-head{max-width:740px;margin-bottom:clamp(20px,3vw,34px)}
.cukcphb-head h2{font-size:clamp(22px,2.8vw,32px);line-height:1.28;letter-spacing:-.02em}
.cukcphb-head p{margin-top:10px;font-size:15px;color:var(--q7mut)}

.cukcphb-stack{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--q7gap)}
.cukcphb-item{display:flex;gap:14px;background:var(--q7card);border:1px solid var(--q7line);border-radius:var(--q7r);padding:20px 22px;transition:border-color .2s,transform .2s}
.cukcphb-item:hover{border-color:#c9c3b6;transform:translateY(-3px)}
.cukcphb-no{flex:none;width:30px;font-size:19px;font-weight:800;line-height:1.3;color:var(--q7brand)}
.cukcphb-item b{display:block;font-size:16px}
.cukcphb-item p{margin-top:6px;font-size:14px;color:var(--q7mut)}

.cukcphb-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--q7gap)}
.cukcphb-step{border-top:2px solid var(--q7ink);padding-top:16px}
.cukcphb-step span{font-size:12.5px;font-weight:700;letter-spacing:.16em;color:var(--q7brand)}
.cukcphb-step h3{margin:8px 0 6px;font-size:17px}
.cukcphb-step p{font-size:14px;color:var(--q7mut)}

.cukcphb-co{display:grid;gap:12px}
.cukcphb-co-row{display:grid;grid-template-columns:150px 1fr 1fr;gap:var(--q7gap);align-items:start;padding:20px;background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r)}
.cukcphb-co-row h3{font-size:15px;letter-spacing:.02em}
.cukcphb-old,.cukcphb-new{padding-left:14px;font-size:14.5px;color:var(--q7mut)}
.cukcphb-old{border-left:2px solid var(--q7line)}
.cukcphb-new{border-left:2px solid var(--q7brand);color:#3f3a33}

.cukcphb-chans{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--q7gap)}
.cukcphb-chan{background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);padding:20px 22px;transition:transform .2s,box-shadow .2s}
.cukcphb-chan:hover{transform:translateY(-3px);box-shadow:var(--q7sh)}
.cukcphb-chan b{display:block;font-size:16px}
.cukcphb-chan p{margin-top:6px;font-size:14px;color:var(--q7mut)}

.cukcphb-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--q7gap)}
.cukcphb-card{background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);overflow:hidden;transition:transform .25s,box-shadow .25s}
.cukcphb-card:hover{transform:translateY(-5px);box-shadow:var(--q7sh)}
.cukcphb-thumb{position:relative;aspect-ratio:3/4;overflow:hidden;background:#eae7e0}
.cukcphb-thumb img{transition:transform .45s ease}
.cukcphb-card:hover .cukcphb-thumb img{transform:scale(1.05)}
.cukcphb-badge{position:absolute;left:10px;top:10px;background:rgba(24,21,16,.78);color:#fff;font-size:12px;padding:3px 10px;border-radius:999px}
.cukcphb-card h3{padding:12px 14px 0;font-size:16px}
.cukcphb-card p{padding:6px 14px 0;font-size:14px;line-height:1.6;color:var(--q7mut)}
.cukcphb-meta{display:flex;flex-wrap:wrap;gap:6px;padding:10px 14px 14px}
.cukcphb-meta span{font-size:12px;color:var(--q7mut);border:1px solid var(--q7line);border-radius:999px;padding:2px 8px}

.cukcphb-ranks{display:grid;grid-template-columns:repeat(2,1fr);gap:10px var(--q7gap)}
.cukcphb-rank{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--q7line);border-radius:12px;padding:14px 18px;transition:border-color .2s,transform .2s}
.cukcphb-rank:hover{border-color:#c9c3b6;transform:translateX(4px)}
.cukcphb-rank-no{flex:none;width:32px;font-size:20px;font-weight:800;line-height:1.2;color:#c8c2b4;font-variant-numeric:tabular-nums}
.cukcphb-rank:nth-child(-n+3) .cukcphb-rank-no{color:var(--q7brand)}
.cukcphb-rank-main{flex:1;min-width:0}
.cukcphb-rank-main b{display:block;font-size:15.5px}
.cukcphb-rank-main span{font-size:13.5px;color:var(--q7mut)}
.cukcphb-rank-tag{flex:none;font-size:12px;color:var(--q7brand);border:1px solid rgba(205,69,38,.3);border-radius:999px;padding:2px 9px}

.cukcphb-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--q7gap)}
.cukcphb-group{background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);padding:22px 24px}
.cukcphb-group h3{display:flex;align-items:center;gap:8px;font-size:16px}
.cukcphb-group h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--q7brand)}
.cukcphb-group li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--q7line);font-size:14.5px}
.cukcphb-group li:last-child{border-bottom:0}
.cukcphb-group li span{flex:none;font-size:13px;color:var(--q7mut)}

.cukcphb-topics{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--q7gap)}
.cukcphb-topic{background:linear-gradient(180deg,#fff,#fbfaf7);border:1px solid var(--q7line);border-radius:var(--q7r);padding:24px;transition:transform .2s,box-shadow .2s}
.cukcphb-topic:hover{transform:translateY(-3px);box-shadow:var(--q7sh)}
.cukcphb-topic b{font-size:17px}
.cukcphb-topic p{margin-top:8px;font-size:14px;color:var(--q7mut)}
.cukcphb-topic em{display:inline-block;margin-top:12px;font-style:normal;font-size:12.5px;color:var(--q7brand)}

.cukcphb-quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--q7gap)}
.cukcphb-quote{background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);padding:22px 24px}
.cukcphb-quote p{font-size:14.5px;color:#3f3a33}
.cukcphb-quote b{display:block;margin-top:14px;font-size:13px;font-weight:600;color:var(--q7mut)}

.cukcphb-news{display:grid;gap:12px}
.cukcphb-news li{display:grid;grid-template-columns:132px 1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);padding:12px;transition:border-color .2s,transform .2s}
.cukcphb-news li:hover{border-color:#c9c3b6;transform:translateX(3px)}
.cukcphb-news .cukcphb-thumb{aspect-ratio:16/10;border-radius:9px}
.cukcphb-news h3{font-size:16px}
.cukcphb-news p{margin-top:4px;font-size:13.5px;color:var(--q7mut)}

.cukcphb-faq{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--q7gap)}
.cukcphb-faq article{background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);padding:22px 24px}
.cukcphb-faq h3{font-size:15.5px}
.cukcphb-faq p{margin-top:8px;font-size:14.5px;color:var(--q7mut)}

.cukcphb-promise{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--q7gap)}
.cukcphb-promise li{background:#fff;border:1px solid var(--q7line);border-radius:var(--q7r);padding:20px 22px}
.cukcphb-promise b{display:block;font-size:15px}
.cukcphb-promise span{display:block;margin-top:6px;font-size:14px;color:var(--q7mut)}

.cukcphb-cta{position:relative;isolation:isolate;overflow:hidden;border-radius:calc(var(--q7r) + 6px);padding:clamp(30px,5vw,60px);color:#fff}
.cukcphb-cta::before{content:"";position:absolute;inset:0;z-index:-2;background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat}
.cukcphb-cta::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(120deg,rgba(22,54,46,.94),rgba(24,21,16,.84))}
.cukcphb-cta h2{font-size:clamp(22px,3vw,34px);line-height:1.25;letter-spacing:-.02em}
.cukcphb-cta p{max-width:620px;margin-top:12px;font-size:15px;color:rgba(255,255,255,.82)}
.cukcphb-cta .cukcphb-btn{margin-top:24px;background:#fff;color:var(--q7ink)}
.cukcphb-cta .cukcphb-btn:hover{background:var(--q7brand);color:#fff;box-shadow:0 10px 24px rgba(0,0,0,.25)}

/* 页脚 */
.cukcphb-foot{background:#141210;color:#d9d4cb;padding:clamp(40px,5vw,64px) 0 0;margin-top:clamp(40px,6vw,80px)}
.cukcphb-fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--q7gap)}
.cukcphb-flogo{font-size:19px;font-weight:800;color:#fff;letter-spacing:-.01em}
.cukcphb-fdesc{max-width:300px;margin-top:10px;font-size:14px;color:#9d978c}
.cukcphb-foot h2{margin-bottom:12px;font-size:14px;letter-spacing:.06em;color:#fff}
.cukcphb-foot li{padding:6px 0;font-size:14px;color:#9d978c}
.cukcphb-foot a:hover{color:#fff}
.cukcphb-copy{margin-top:clamp(28px,4vw,48px);border-top:1px solid #2a2721;padding:18px 0;text-align:center;font-size:13px;color:#7f7a70}

@media (max-width:1024px){
  .cukcphb-grid{grid-template-columns:repeat(3,1fr)}
  .cukcphb-steps{grid-template-columns:repeat(2,1fr)}
  .cukcphb-chans{grid-template-columns:repeat(2,1fr)}
  .cukcphb-promise{grid-template-columns:repeat(2,1fr)}
  .cukcphb-fgrid{grid-template-columns:1fr 1fr}
  .cukcphb-co-row{grid-template-columns:1fr 1fr}
  .cukcphb-co-row h3{grid-column:1 / -1}
}
@media (max-width:768px){
  .cukcphb-nav{min-height:60px}
  .cukcphb-grid{grid-template-columns:repeat(2,1fr)}
  .cukcphb-params{grid-template-columns:repeat(2,1fr)}
  .cukcphb-params li:nth-child(2n){border-right:0}
  .cukcphb-params li:nth-child(-n+2){border-bottom:1px solid var(--q7line)}
  .cukcphb-stack,.cukcphb-ranks,.cukcphb-groups,.cukcphb-faq,.cukcphb-topics,.cukcphb-quotes{grid-template-columns:1fr}
  .cukcphb-news li{grid-template-columns:104px 1fr;gap:14px}
}
@media (max-width:520px){
  .cukcphb-nav{flex-wrap:wrap;gap:8px;padding:8px 0}
  .cukcphb-menu{width:100%;margin-left:0}
  .cukcphb-chans,.cukcphb-promise,.cukcphb-fgrid{grid-template-columns:1fr}
  .cukcphb-news li{grid-template-columns:1fr}
  .cukcphb-news .cukcphb-thumb{aspect-ratio:16/9}
  .cukcphb-hero{padding-top:26px}
  .cukcphb-co-row{padding:16px}
}