/* =========================================================================
   云服务主题 — 首页
   ------------------------------------------------------------
   商业售卖页版式：浅色首屏（左文案 + 右后台轮播 + 数据带）、白底价值主张、
   浅雾底产品价格、浅雾底问答。
   每个 section 背景通栏铺满，内容走一条 1680px 上限的宽栅格。
   顶栏皮肤在 neko.css，本文件只管首页；不覆盖全站 .container/.nc-* 组件。
   ========================================================================= */

/* ------------------------------ 01 页面骨架 ------------------------------ */
:root{
  --cs-max:1680px;
  --cs-pad:clamp(20px,3vw,64px);
  --cs-gap:clamp(14px,1.3vw,20px);
  --cs-mist:#f5f8fd;
  --cs-dark:#0b1424;
}

.cs-main{display:block;background:var(--nc-paper);overflow-x:clip}
.cs-sprite{position:absolute;width:0;height:0;overflow:hidden}

.cs-wrap{width:100%;max-width:var(--cs-max);margin-inline:auto;padding-inline:var(--cs-pad)}

/* 锚点落点：只需让开吸顶顶栏，不再有章节条 */
.cs-sec{position:relative;overflow:clip;scroll-margin-top:calc(var(--nc-nav-h,66px) + 14px)}
.cs-sec-ledger,.cs-sec-poster{background:var(--nc-paper)}
.cs-sec-shelf,.cs-sec-faq{background:var(--cs-mist);border-top:1px solid var(--nc-line2)}

/* ------------------------------ 02 通用元件 ------------------------------ */
.cs-eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;
  color:var(--nc-brand);font-size:12.5px;font-weight:600;letter-spacing:.01em;line-height:1.4;
}
.cs-eyebrow::before{content:"";width:14px;height:2px;border-radius:1px;background:currentColor;flex:none}
.cs-eyebrow.is-light{color:#8fb6ff}

.cs-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:8px;
  font-size:14px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:background .18s,border-color .18s,color .18s,box-shadow .18s,transform .18s;
}
.cs-btn svg{width:16px;height:16px;flex:none}
.cs-btn:active{transform:translateY(1px)}
.cs-btn-primary{background:var(--nc-brand);color:#fff;box-shadow:0 12px 24px -18px rgba(37,99,235,.9)}
.cs-btn-primary:hover{background:var(--nc-brand2);box-shadow:0 14px 28px -16px rgba(37,99,235,.85)}
.cs-btn-ghost{background:var(--nc-paper);color:var(--nc-ink2);border-color:var(--nc-line)}
.cs-btn-ghost:hover{border-color:#b9c9e6;color:var(--nc-brand);background:#f9fbff}
.cs-btn-light{background:#fff;color:var(--nc-brand2);box-shadow:0 14px 30px -22px rgba(6,18,44,.8)}
.cs-btn-light:hover{background:#f2f6ff;color:var(--nc-brand2)}
.cs-btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.cs-btn-outline:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7)}

.cs-textlink{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--nc-brand);font-size:13.5px;font-weight:600;line-height:1.5;
}
.cs-textlink svg{width:15px;height:15px;flex:none;transition:transform .18s}
.cs-textlink:hover svg{transform:translateX(3px)}

/* ------------------------------ 03 首屏 ------------------------------ */
.cs-sec-cover{
  background:
    radial-gradient(860px 420px at 86% -12%,rgba(37,99,235,.13),transparent 62%),
    linear-gradient(180deg,#f6f9ff 0%,#fbfdff 46%,#fff 100%);
}
.cs-hero{position:relative}
/* 右侧极淡的纵向网格，只在宽屏出现，避免整页像文档 */
.cs-hero::before{
  content:"";position:absolute;top:0;right:0;bottom:0;width:min(56%,860px);
  background-image:linear-gradient(to right,rgba(12,21,38,.05) 1px,transparent 1px);
  background-size:clamp(64px,6vw,96px) 100%;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  pointer-events:none;
}

.cs-hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
  gap:clamp(28px,3.4vw,60px);align-items:center;
  padding-block:clamp(46px,5vw,80px) clamp(24px,2.6vw,34px);
}
.cs-hero-copy{min-width:0}

.cs-hero-title{
  font-size:clamp(32px,4.2vw,58px);line-height:1.08;letter-spacing:-.035em;color:var(--nc-ink);
}
.cs-hero-title em{color:var(--nc-brand);font-style:normal}

.cs-hero-lead{
  margin-top:20px;max-width:47ch;
  color:var(--nc-ink3);font-size:clamp(14.5px,1.05vw,16px);line-height:1.9;
}
.cs-hero-act{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(24px,2.6vw,30px)}

.cs-hero-assure{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:clamp(22px,2.4vw,28px)}
.cs-hero-assure li{display:inline-flex;align-items:center;gap:7px;color:var(--nc-ink3);font-size:12.5px;line-height:1.5}
.cs-hero-assure svg{width:15px;height:15px;flex:none;color:var(--nc-green)}

/* 右侧：后台 Banner 轮播（后台没配轮播时只留一块等高的空白区域） */
.cs-hero-side{min-width:0}
.cs-banner,.cs-banner-blank{position:relative;aspect-ratio:16/9;border-radius:14px}
.cs-banner{
  overflow:hidden;isolation:isolate;background:#e7edf7;
  box-shadow:0 28px 64px -44px rgba(12,21,38,.5),0 2px 6px rgba(12,21,38,.04);
}
.cs-banner-track{position:absolute;inset:0}
.cs-banner-slide{
  position:absolute;inset:0;opacity:0;visibility:hidden;
  transition:opacity .55s ease,visibility 0s linear .55s;
}
.cs-banner-slide.is-on{opacity:1;visibility:visible;transition:opacity .55s ease,visibility 0s}
/* 底部压一层暗角，保证图上文字与分页在任何底图上都读得清 */
.cs-banner-slide::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(9,17,31,0) 42%,rgba(9,17,31,.16) 68%,rgba(9,17,31,.6) 100%);
}
.cs-banner-media{position:absolute;inset:0;background:#dfe7f3}
.cs-banner-media img,.cs-banner-media video{display:block;width:100%;height:100%;object-fit:cover}
.cs-banner-hit{position:absolute;inset:0;z-index:2}

/* 底部一行：左文案、右按钮；整行抬高到分页上方，按钮就落在右下角小圆点的正上方 */
.cs-banner-foot{
  position:absolute;left:0;right:0;bottom:0;z-index:3;pointer-events:none;
  display:flex;align-items:flex-end;justify-content:space-between;gap:12px;
  padding:clamp(16px,1.8vw,26px);
  padding-right:clamp(12px,1.4vw,18px);
  padding-bottom:calc(clamp(12px,1.4vw,18px) + 7px + clamp(10px,1.2vw,14px));
}
.cs-banner-cap{flex:1 1 auto;min-width:0;max-width:min(100%,46ch);color:#fff}
.cs-banner-kicker{
  display:inline-flex;align-items:center;gap:6px;margin-top:9px;padding:3px 9px;border-radius:999px;
  background:rgba(255,255,255,.22);color:#fff;font-size:11px;font-weight:600;line-height:1.6;
}
.cs-banner-title{
  display:block;font-size:clamp(17px,1.5vw,23px);font-weight:700;
  line-height:1.35;letter-spacing:-.02em;text-shadow:0 1px 3px rgba(9,17,31,.42);
}
.cs-banner-sub{margin-top:6px;color:rgba(255,255,255,.88);font-size:12.5px;line-height:1.7;text-shadow:0 1px 2px rgba(9,17,31,.36)}
.cs-banner-btn{
  display:inline-flex;align-items:center;gap:6px;flex:none;margin-left:auto;
  height:34px;padding:0 14px;white-space:nowrap;
  border-radius:8px;background:#fff;color:var(--nc-ink);font-size:12.5px;font-weight:600;
}
.cs-banner-btn svg{width:13px;height:13px;flex:none}

.cs-banner-nav{
  position:absolute;right:clamp(12px,1.4vw,18px);bottom:clamp(12px,1.4vw,18px);z-index:4;
  display:flex;align-items:center;gap:8px;
}
.cs-banner-dots{display:flex;align-items:center;gap:6px}
.cs-banner-dots button{
  width:7px;height:7px;padding:0;border:0;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.55);transition:width .2s ease,background .2s ease;
}
.cs-banner-dots button[aria-current="true"]{width:18px;border-radius:999px;background:#fff}
.cs-banner-dots button:focus-visible{outline:2px solid #fff;outline-offset:2px}

/* 分类入口卡：首屏下方一排入口，点到哪个就跳到产品区并切到哪个 tab */
.cs-catcards-wrap{position:relative;z-index:1;padding-bottom:clamp(26px,3vw,42px)}
.cs-catcards{display:grid;grid-template-columns:repeat(var(--cs-catcard-cols,4),minmax(0,1fr));gap:var(--cs-gap)}
.cs-catcards-1{--cs-catcard-cols:1}
.cs-catcards-2{--cs-catcard-cols:2}
.cs-catcards-3{--cs-catcard-cols:3}
.cs-catcard{
  display:flex;align-items:center;gap:12px;min-width:0;min-height:74px;
  padding:14px 16px;border:1px solid var(--nc-line);border-radius:12px;background:rgba(255,255,255,.86);
  transition:background .18s,border-color .18s,box-shadow .18s,transform .18s;
}
.cs-catcard:hover{
  background:#fff;border-color:#b9c9e6;transform:translateY(-2px);
  box-shadow:0 22px 44px -34px rgba(12,21,38,.45);
}
.cs-catcard-ic{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;flex:none;
  border-radius:10px;background:var(--nc-brand-soft);color:var(--nc-brand);
}
.cs-catcard-ic svg{width:20px;height:20px}
.cs-catcard-txt{min-width:0;flex:1}
.cs-catcard-txt b{
  display:block;color:var(--nc-ink);font-size:14.5px;font-weight:600;line-height:1.4;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.cs-catcard-txt em{display:block;margin-top:3px;color:var(--nc-ink3);font-size:11.5px;font-style:normal;line-height:1.55}
.cs-catcard-go{width:15px;height:15px;flex:none;color:var(--nc-muted);transition:transform .18s,color .18s}
.cs-catcard:hover .cs-catcard-go{color:var(--nc-brand);transform:translateX(3px)}

/* 数据带 */
.cs-hero-stats{border-top:1px solid var(--nc-line);background:rgba(255,255,255,.72)}
.cs-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding-block:22px}
.cs-stat{padding-left:clamp(16px,2.2vw,34px);border-left:1px solid var(--nc-line);min-width:0}
.cs-stat:first-child{border-left:0;padding-left:0}
.cs-stat b{display:flex;align-items:baseline;gap:3px;color:var(--nc-ink);font-size:clamp(22px,2vw,29px);font-weight:700;line-height:1.15;letter-spacing:-.03em}
.cs-stat b em{color:var(--nc-muted);font-size:12.5px;font-style:normal;font-weight:500;letter-spacing:0}
.cs-stat span{display:block;margin-top:3px;color:var(--nc-ink3);font-size:12.5px;line-height:1.5}

/* ------------------------------ 04 价值主张 ------------------------------ */
.cs-why{padding-block:clamp(56px,6vw,94px)}
.cs-why-head{
  display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
  gap:18px clamp(28px,4vw,64px);align-items:end;
}
.cs-why-lead h2{font-size:clamp(26px,2.8vw,40px);letter-spacing:-.035em}
.cs-why-aside{justify-self:end;max-width:46ch}
.cs-why-aside p{color:var(--nc-ink3);font-size:13.5px;line-height:1.95}
.cs-why-aside .cs-textlink{margin-top:14px}

.cs-why-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--cs-gap);margin-top:clamp(26px,3vw,38px)}
.cs-why-item{
  display:flex;flex-direction:column;min-width:0;
  padding:22px 20px 24px;border:1px solid var(--nc-line2);border-radius:12px;background:#f8faff;
  transition:background .2s,border-color .2s,box-shadow .2s,transform .2s;
}
.cs-why-item:hover{
  background:#fff;border-color:#c9d8f0;transform:translateY(-2px);
  box-shadow:0 24px 48px -36px rgba(12,21,38,.45);
}
.cs-why-ic{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;flex:none;
  border-radius:9px;background:var(--nc-brand-soft);color:var(--nc-brand);
}
.cs-why-ic svg{width:19px;height:19px}
.cs-why-val{
  display:block;margin-top:16px;color:var(--nc-ink);
  font-size:clamp(24px,2.2vw,31px);font-weight:700;line-height:1.12;letter-spacing:-.035em;
}
.cs-why-item h3{margin-top:10px;color:var(--nc-ink);font-size:14.5px;letter-spacing:-.1px}
.cs-why-item p{margin-top:7px;color:var(--nc-ink3);font-size:12.5px;line-height:1.85}

/* ------------------------------ 05 产品与价格 ------------------------------ */
.cs-shelf{padding-block:clamp(56px,6vw,92px)}
.cs-shelf-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cs-shelf-lead{min-width:0}
.cs-shelf-lead h2{font-size:clamp(25px,2.7vw,38px);letter-spacing:-.035em}
.cs-shelf-lead p{margin-top:12px;max-width:66ch;color:var(--nc-ink3);font-size:13.5px;line-height:1.85}
.cs-shelf-side{display:flex;align-items:center;gap:16px;flex:none}
.cs-count{color:var(--nc-ink3);font-size:12.5px;white-space:nowrap}
.cs-count b{margin-right:3px;color:var(--nc-ink);font-size:18px;font-weight:700}

/* 分段式分类条：浅蓝轨道 + 白底选中项，分类多了横向滚动 */
.cs-cats{
  display:flex;align-items:center;gap:4px;width:max-content;max-width:100%;
  margin-top:26px;padding:4px;border-radius:10px;background:#e8eefa;
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.cs-cats::-webkit-scrollbar{display:none}
.cs-cat{
  display:inline-flex;align-items:center;gap:7px;flex:none;height:36px;padding:0 15px;
  border:0;border-radius:8px;background:transparent;
  color:var(--nc-ink3);font-size:13.5px;font-weight:600;line-height:1;
  transition:background .18s,color .18s,box-shadow .18s;
}
.cs-cat em{
  display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;
  border-radius:999px;background:rgba(12,21,38,.07);color:var(--nc-ink3);
  font-size:11px;font-style:normal;font-weight:600;line-height:1;
}
.cs-cat:hover{background:rgba(255,255,255,.7);color:var(--nc-ink)}
.cs-cat.on{background:#fff;color:var(--nc-brand);box-shadow:0 6px 16px -10px rgba(12,21,38,.55)}
.cs-cat.on em{background:var(--nc-brand-soft);color:var(--nc-brand)}

.cs-datasets{margin-top:22px}
.cs-data{display:none}
.cs-data.on{display:block}
@keyframes cs-fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.cs-data.on{animation:cs-fade .26s ease both}

.cs-data-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:15px}
.cs-data-head h3{color:var(--nc-ink2);font-size:14px;font-weight:600;letter-spacing:-.1px}
.cs-data-head span{display:inline-flex;align-items:center;gap:6px;color:var(--nc-muted);font-size:11.5px;white-space:nowrap}
.cs-data-head span i{width:6px;height:6px;border-radius:50%;background:var(--nc-green);box-shadow:0 0 0 3px rgba(22,163,74,.12);flex:none}

.cs-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--cs-gap)}
.cs-card{
  display:flex;flex-direction:column;min-width:0;
  padding:20px 20px 18px;background:var(--nc-paper);
  border:1px solid var(--nc-line);border-radius:12px;
  transition:border-color .18s,box-shadow .18s,transform .18s;
}
.cs-card:hover{border-color:#c6d6ef;box-shadow:0 22px 44px -34px rgba(12,21,38,.5);transform:translateY(-2px)}
.cs-card.is-soldout{background:#fbfcfe}
.cs-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.cs-card-name{font-size:16.5px;line-height:1.4;letter-spacing:-.2px;min-width:0}
.cs-stock{
  display:inline-flex;align-items:center;gap:5px;flex:none;padding:3px 8px;border-radius:999px;
  background:var(--nc-line2);color:var(--nc-ink3);font-size:10.5px;font-weight:600;line-height:1.7;white-space:nowrap;
}
.cs-stock i{width:5px;height:5px;border-radius:50%;background:currentColor;flex:none}
.cs-stock.is-ok{background:rgba(22,163,74,.09);color:#15803d}
.cs-stock.is-low{background:rgba(217,119,6,.1);color:#b45309}
.cs-stock.is-out{background:#eef2f9;color:var(--nc-muted)}

.cs-card-desc{margin-top:8px;color:var(--nc-ink3);font-size:12.5px;line-height:1.75}
.cs-spec{margin:13px 0 0}
.cs-spec>div{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:7px 0;border-top:1px solid var(--nc-line2)}
.cs-spec>div:first-child{border-top:0;padding-top:2px}
.cs-spec dt{color:var(--nc-muted);font-size:11.5px;white-space:nowrap}
.cs-spec dd{margin:0;color:var(--nc-ink2);font-size:12.5px;font-weight:600;text-align:right}

.cs-card-buy{
  display:flex;align-items:flex-end;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--nc-line2);
}
.cs-price{min-width:0}
.cs-price b{display:flex;align-items:baseline;gap:2px;color:var(--nc-ink);font-size:25px;font-weight:700;line-height:1.1;letter-spacing:-.03em}
.cs-price b i{color:var(--nc-ink2);font-size:13px;font-weight:600;font-style:normal}
.cs-price b.cs-free{font-size:20px;color:var(--nc-ink)}
.cs-price-meta{display:flex;align-items:center;gap:7px;margin-top:4px;color:var(--nc-muted);font-size:11.5px;line-height:1.4}
.cs-price-meta s{color:#a9b7cc}
.cs-price-tag{
  display:inline-flex;margin-top:6px;padding:2px 6px;border-radius:4px;
  background:var(--nc-brand-soft);color:var(--nc-brand);font-size:10.5px;font-weight:600;line-height:1.6;
}
.cs-buy{
  display:inline-flex;align-items:center;justify-content:center;gap:5px;flex:none;
  height:40px;padding:0 14px;border-radius:8px;background:var(--nc-brand);color:#fff;
  font-size:13px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .18s,box-shadow .18s;
}
.cs-buy svg{width:14px;height:14px;flex:none}
.cs-buy:hover{background:var(--nc-brand2);box-shadow:0 10px 20px -14px rgba(37,99,235,.9)}
.cs-buy.is-off{background:#eef2f9;color:var(--nc-muted);cursor:not-allowed;box-shadow:none}

/* 优惠卡：从有原价、未售罄的商品里取折扣最狠的三条 */
.cs-deals{margin-top:clamp(30px,3.4vw,44px);padding-top:clamp(24px,2.6vw,32px);border-top:1px solid var(--nc-line)}
.cs-deals-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px 24px;flex-wrap:wrap}
.cs-deals-head h3{color:var(--nc-ink);font-size:17px;letter-spacing:-.2px}
.cs-deals-head p{color:var(--nc-muted);font-size:12px;line-height:1.7}
.cs-deals-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--cs-gap);margin-top:18px}
.cs-promo{
  display:flex;flex-direction:column;min-width:0;
  padding:18px 18px 16px;border:1px solid #dbe6f6;border-radius:12px;background:var(--nc-paper);
  transition:border-color .18s,box-shadow .18s,transform .18s;
}
.cs-promo:hover{border-color:#bdd0ee;transform:translateY(-2px);box-shadow:0 24px 48px -36px rgba(12,21,38,.5)}
.cs-promo-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.cs-promo-tag{
  padding:3px 8px;border-radius:6px;background:#fff3e6;color:#b45309;
  font-size:11px;font-weight:700;line-height:1.6;white-space:nowrap;
}
.cs-promo-cat{color:var(--nc-muted);font-size:11px;white-space:nowrap}
.cs-promo-name{margin-top:12px;color:var(--nc-ink);font-size:16px;line-height:1.4;letter-spacing:-.2px}
.cs-promo-desc{margin-top:6px;color:var(--nc-ink3);font-size:12.5px;line-height:1.75}
.cs-promo-price{
  display:flex;align-items:baseline;gap:8px;margin-top:auto;
  padding-top:16px;border-top:1px solid var(--nc-line2);
}
.cs-promo-price b{display:flex;align-items:baseline;gap:2px;color:var(--nc-ink);font-size:25px;font-weight:700;line-height:1.1;letter-spacing:-.03em}
.cs-promo-price b i{color:var(--nc-ink2);font-size:13px;font-weight:600;font-style:normal}
.cs-promo-price s{color:#a9b7cc;font-size:12px}
.cs-promo-meta{display:flex;align-items:center;gap:7px;color:var(--nc-muted);font-size:11.5px;line-height:1.4}
.cs-promo-btn{
  display:flex;align-items:center;justify-content:center;gap:6px;width:100%;height:40px;margin-top:14px;
  border-radius:8px;background:var(--nc-brand-soft);color:var(--nc-brand);
  font-size:13px;font-weight:600;line-height:1;transition:background .18s,color .18s;
}
.cs-promo-btn svg{width:14px;height:14px;flex:none}
.cs-promo-btn:hover{background:var(--nc-brand);color:#fff}
.cs-shelf-note{margin-top:18px;color:var(--nc-muted);font-size:11.5px;line-height:1.8}

.cs-empty{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  padding:26px 28px;background:var(--nc-paper);border:1px dashed #cfdcee;border-radius:12px;
}
.cs-empty-ic{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;flex:none;
  border-radius:9px;background:var(--nc-brand-soft);color:var(--nc-brand);
}
.cs-empty-ic svg{width:20px;height:20px}
.cs-empty>div{min-width:0;flex:1 1 260px}
.cs-empty h3{font-size:15px;letter-spacing:-.1px}
.cs-empty p{margin-top:5px;color:var(--nc-ink3);font-size:12.5px;line-height:1.75}
.cs-empty .cs-btn{margin-left:auto}
.cs-empty-lg{padding:36px 32px}

/* ------------------------------ 06 服务承诺 ------------------------------ */
.cs-sec-promises{background:var(--cs-dark);color:#c6d5ea}
.cs-sec-promises::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(720px 340px at 86% -6%,rgba(37,99,235,.3),transparent 64%),
    radial-gradient(560px 280px at 4% 104%,rgba(37,99,235,.14),transparent 70%);
}
.cs-sla{position:relative;padding-block:clamp(56px,6vw,92px)}
.cs-sla-head{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:20px 56px;align-items:end}
.cs-sla-head h2{color:#fff;font-size:clamp(26px,2.9vw,40px);letter-spacing:-.035em}
.cs-sla-lead{justify-self:end;max-width:50ch;color:#93a9c9;font-size:13.5px;line-height:1.9}

.cs-sla-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  margin-top:clamp(30px,3.4vw,46px);border-top:1px solid rgba(255,255,255,.1);
}
.cs-sla-item{padding:26px clamp(16px,2vw,28px) 6px;border-left:1px solid rgba(255,255,255,.1);min-width:0}
.cs-sla-item:first-child{border-left:0;padding-left:0}
.cs-sla-item:last-child{padding-right:0}
.cs-sla-ic{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;margin-bottom:16px;color:#8fb6ff}
.cs-sla-ic svg{width:26px;height:26px}
.cs-sla-val{display:block;color:#fff;font-size:clamp(23px,2.2vw,31px);font-weight:700;line-height:1.15;letter-spacing:-.03em}
.cs-sla-item h3{margin-top:8px;color:#dbe7f8;font-size:14.5px;letter-spacing:-.1px}
.cs-sla-item p{margin-top:8px;color:#8ea4c4;font-size:12.5px;line-height:1.85}

.cs-sla-note{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:clamp(26px,3vw,38px);padding-top:18px;border-top:1px solid rgba(255,255,255,.1);
  color:#7e93b2;font-size:11.5px;line-height:1.8;
}
.cs-sla-note-cap{padding:2px 7px;border:1px solid rgba(255,255,255,.2);border-radius:4px;color:#9fb3cf;font-size:10.5px;flex:none}
.cs-sla-note p{margin:0;max-width:80ch}
.cs-sla-note-link{display:inline-flex;align-items:center;gap:6px;margin-left:auto;color:#9cc4ff;font-size:12.5px;font-weight:600;white-space:nowrap}
.cs-sla-note-link svg{width:14px;height:14px;flex:none}
.cs-sla-note-link:hover{color:#c7dcff}

/* ------------------------------ 07 活动 ------------------------------ */
.cs-poster{
  display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:clamp(30px,4vw,64px);align-items:center;padding-block:clamp(56px,6vw,92px);
}
.cs-poster-copy h2{font-size:clamp(25px,2.7vw,38px);letter-spacing:-.035em}
.cs-poster-copy>p{margin-top:14px;max-width:46ch;color:var(--nc-ink3);font-size:13.5px;line-height:1.9}
.cs-poster-act{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cs-poster-note{margin-top:18px;color:var(--nc-muted);font-size:11.5px;line-height:1.8}

.cs-poster-figure{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--nc-line);border-radius:14px;background:var(--cs-mist);
  box-shadow:0 30px 64px -48px rgba(12,21,38,.6);
}
.cs-poster-figure img{display:block;width:100%;height:auto;max-height:520px;object-fit:cover;transition:transform .45s ease}
.cs-poster-figure:hover img{transform:scale(1.02)}
.cs-poster-tag{
  position:absolute;left:14px;top:14px;padding:4px 10px;border-radius:6px;
  background:rgba(11,20,36,.74);color:#fff;font-size:11px;font-weight:600;line-height:1.6;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.cs-poster-go{
  position:absolute;right:14px;bottom:14px;display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--nc-ink);
  box-shadow:0 10px 24px -12px rgba(12,21,38,.55);transition:transform .18s;
}
.cs-poster-go svg{width:17px;height:17px}
.cs-poster-figure:hover .cs-poster-go{transform:translateX(2px)}

/* ------------------------------ 08 常见问题 ------------------------------ */
.cs-faq{
  display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);
  gap:clamp(32px,4.6vw,80px);align-items:start;padding-block:clamp(56px,6vw,92px);
}
.cs-faq-lead h2{font-size:clamp(25px,2.7vw,38px);letter-spacing:-.035em}
.cs-faq-lead>p{margin-top:16px;max-width:36ch;color:var(--nc-ink3);font-size:13.5px;line-height:1.95}

.cs-faq-card{
  display:flex;align-items:center;gap:12px;margin-top:24px;padding:14px 16px;
  background:var(--nc-paper);border:1px solid var(--nc-line);border-radius:10px;
  transition:border-color .18s,box-shadow .18s,transform .18s;
}
.cs-faq-card:hover{border-color:#c6d6ef;box-shadow:0 16px 34px -28px rgba(12,21,38,.45);transform:translateY(-1px)}
.cs-faq-card-ic{
  display:flex;align-items:center;justify-content:center;width:34px;height:34px;flex:none;
  border-radius:8px;background:var(--nc-brand-soft);color:var(--nc-brand);
}
.cs-faq-card-ic svg{width:18px;height:18px}
.cs-faq-card-txt{min-width:0;flex:1}
.cs-faq-card-txt b{display:block;color:var(--nc-ink);font-size:13.5px;font-weight:600}
.cs-faq-card-txt em{display:block;margin-top:2px;color:var(--nc-ink3);font-size:11.5px;font-style:normal;line-height:1.6}
.cs-faq-card-go{width:15px;height:15px;flex:none;color:var(--nc-muted)}
.cs-faq-hint{margin-top:11px;color:var(--nc-muted);font-size:11px;line-height:1.7}

.cs-faq-list{min-width:0}
.cs-faq-item{border-top:1px solid var(--nc-line)}
.cs-faq-item:last-child{border-bottom:1px solid var(--nc-line)}
.cs-faq-item summary{display:flex;align-items:flex-start;gap:14px;padding:18px 0;cursor:pointer;list-style:none}
.cs-faq-item summary::-webkit-details-marker{display:none}
.cs-faq-q{flex:1;color:var(--nc-ink);font-size:14.5px;font-weight:600;line-height:1.6}
.cs-faq-ind{
  position:relative;flex:none;width:22px;height:22px;margin-top:1px;
  border:1px solid var(--nc-line);border-radius:50%;background:var(--nc-paper);
  transition:background .2s,border-color .2s;
}
.cs-faq-ind::before,.cs-faq-ind::after{
  content:"";position:absolute;left:50%;top:50%;border-radius:1px;background:var(--nc-ink3);
  transform:translate(-50%,-50%);transition:transform .2s,opacity .2s,background .2s;
}
.cs-faq-ind::before{width:9px;height:1.5px}
.cs-faq-ind::after{width:1.5px;height:9px}
.cs-faq-item[open] .cs-faq-ind{background:var(--nc-brand);border-color:var(--nc-brand)}
.cs-faq-item[open] .cs-faq-ind::before,.cs-faq-item[open] .cs-faq-ind::after{background:#fff}
.cs-faq-item[open] .cs-faq-ind::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.cs-faq-a{padding:0 36px 20px 0}
.cs-faq-a p{max-width:74ch;color:var(--nc-ink3);font-size:13px;line-height:1.95}
.cs-faq-empty{padding:24px 0;color:var(--nc-ink3);font-size:13px}
.cs-faq-empty .cs-btn{margin-top:14px}

/* ------------------------------ 09 收尾：产品中心入口 ------------------------------ */
.cs-sec-cta{
  background:linear-gradient(135deg,#1e3a8a 0%,#1b5fc4 52%,#1b8ae8 100%);
  color:#fff;
}
.cs-sec-cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 380px at 88% 4%,rgba(255,255,255,.2),transparent 62%),
    radial-gradient(560px 300px at 8% 100%,rgba(11,20,36,.22),transparent 70%);
}
.cs-cta{position:relative;padding-block:clamp(52px,5.6vw,82px)}
.cs-cta-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(28px,4vw,64px);align-items:center}
.cs-cta-crumb{display:flex;align-items:center;gap:7px;color:rgba(255,255,255,.68);font-size:12px;line-height:1.6}
.cs-cta-crumb a{color:rgba(255,255,255,.9)}
.cs-cta-crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.cs-cta-crumb i{font-style:normal;opacity:.55}
.cs-cta h2{margin-top:10px;color:#fff;font-size:clamp(26px,2.9vw,38px);letter-spacing:-.035em}
.cs-cta-lead{margin-top:12px;max-width:52ch;color:rgba(255,255,255,.84);font-size:13.5px;line-height:1.9}
.cs-cta-act{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

.cs-cta-filters{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-top:clamp(26px,3vw,36px);padding-top:22px;border-top:1px solid rgba(255,255,255,.2);
}
.cs-cta-filter{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  border:1px solid rgba(255,255,255,.3);border-radius:8px;background:rgba(255,255,255,.08);
  color:#fff;font-size:13px;font-weight:600;line-height:1;
  transition:background .18s,border-color .18s,color .18s;
}
.cs-cta-filter em{
  display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;
  border-radius:999px;background:rgba(255,255,255,.18);color:#fff;font-size:11px;font-style:normal;font-weight:600;line-height:1;
}
.cs-cta-filter:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.5)}
.cs-cta-filter.is-on{background:#fff;border-color:#fff;color:var(--nc-brand2)}
.cs-cta-filter.is-on em{background:var(--nc-brand-soft);color:var(--nc-brand2)}

.cs-cta-links{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));overflow:hidden;
  border:1px solid rgba(255,255,255,.24);border-radius:12px;background:rgba(255,255,255,.06);
}
.cs-cta-links a{
  display:flex;align-items:flex-start;justify-content:space-between;gap:10px;
  padding:15px 18px;border-left:1px solid rgba(255,255,255,.16);border-top:1px solid rgba(255,255,255,.16);
  color:#fff;font-size:13.5px;font-weight:500;line-height:1.5;transition:background .18s;
}
.cs-cta-links a:nth-child(odd){border-left:0}
.cs-cta-links a:nth-child(-n+2){border-top:0}
.cs-cta-links a:hover{background:rgba(255,255,255,.12)}
.cs-cta-link-txt{min-width:0;flex:1}
.cs-cta-link-txt b{display:block;font-size:13.5px;font-weight:600;line-height:1.5}
.cs-cta-link-txt em{display:block;margin-top:3px;color:rgba(255,255,255,.68);font-size:11.5px;font-style:normal;line-height:1.6}
.cs-cta-links svg{width:14px;height:14px;flex:none;margin-top:2px;opacity:.8;transition:transform .18s}
.cs-cta-links a:hover svg{transform:translateX(2px)}

.cs-cta-note{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:clamp(28px,3vw,40px);padding-top:18px;border-top:1px solid rgba(255,255,255,.22);
  color:rgba(255,255,255,.68);font-size:11.5px;line-height:1.8;
}

/* ------------------------------ 10 响应式 ------------------------------ */
@media (max-width:1180px){
  .cs-hero-grid{grid-template-columns:minmax(0,.94fr) minmax(0,1.06fr);gap:32px}
  .cs-why-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cs-sla-grid{grid-template-columns:repeat(2,minmax(0,1fr));border-top:0}
  .cs-sla-item{padding:22px 0;border-left:0;border-top:1px solid rgba(255,255,255,.1)}
  .cs-sla-item:nth-child(odd){padding-right:32px}
  .cs-sla-item:nth-child(even){padding-left:32px;border-left:1px solid rgba(255,255,255,.1)}
}

@media (max-width:1024px){
  .cs-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cs-catcards{--cs-catcard-cols:2}
  .cs-catcards-1{--cs-catcard-cols:1}
  .cs-deals-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cs-hero::before{width:100%;opacity:.6}
}

@media (max-width:940px){
  .cs-hero-grid{grid-template-columns:minmax(0,1fr);gap:34px;padding-block:clamp(38px,6vw,58px)}
  .cs-hero-side{max-width:100%}
  .cs-hero-title{font-size:clamp(31px,6vw,44px)}
  .cs-hero-lead{max-width:60ch}
  .cs-why-head{grid-template-columns:1fr;gap:16px}
  .cs-why-aside{justify-self:start;max-width:58ch}
  .cs-sla-head{grid-template-columns:1fr;gap:14px}
  .cs-sla-lead{justify-self:start;max-width:60ch}
  .cs-poster,.cs-faq,.cs-cta-grid{grid-template-columns:1fr}
  .cs-poster-copy>p,.cs-faq-lead>p{max-width:60ch}
  .cs-poster-figure{order:2}
  .cs-cta-links{max-width:560px}
}

@media (max-width:760px){
  .cs-shelf-head{flex-direction:column;align-items:flex-start;gap:18px}
  .cs-shelf-side{width:100%;justify-content:space-between}
  .cs-cta-links{grid-template-columns:1fr;max-width:none}
  .cs-cta-links a{border-left:0}
  .cs-cta-links a:nth-child(2){border-top:1px solid rgba(255,255,255,.16)}
  .cs-cta-note{justify-content:flex-start}
  .cs-empty .cs-btn{margin-left:0}
}

@media (max-width:680px){
  .cs-grid{grid-template-columns:1fr}
  .cs-catcards{--cs-catcard-cols:1}
  .cs-why-grid{grid-template-columns:1fr}
  .cs-deals-grid{grid-template-columns:1fr}
  .cs-why-item h3{font-size:14px}
  .cs-stats{grid-template-columns:repeat(2,minmax(0,1fr));padding-block:6px}
  .cs-stat{padding:16px 0 16px 18px;border-left:1px solid var(--nc-line)}
  .cs-stat:nth-child(odd){border-left:0;padding-left:0}
  .cs-stat:nth-child(n+3){border-top:1px solid var(--nc-line)}
  .cs-sla-grid{grid-template-columns:1fr}
  .cs-sla-item,.cs-sla-item:nth-child(odd),.cs-sla-item:nth-child(even){padding:20px 0;border-left:0}
  .cs-data-head{flex-direction:column;align-items:flex-start;gap:4px}
  .cs-faq-a{padding-right:0}
}

@media (max-width:560px){
  .cs-sec{scroll-margin-top:calc(var(--nc-nav-h,66px) + 10px)}
  .cs-why,.cs-shelf,.cs-sla,.cs-poster,.cs-faq,.cs-cta{padding-block:46px}
  .cs-hero-grid{padding-block:30px 22px}
  .cs-hero-title{font-size:clamp(29px,8.4vw,36px)}
  .cs-hero-lead{margin-top:16px;font-size:14px}
  .cs-hero-act{display:grid;grid-template-columns:1fr;gap:10px}
  .cs-hero-act .cs-btn{width:100%}
  .cs-hero-assure{gap:8px 16px;margin-top:20px}
  .cs-catcards-wrap{padding-bottom:26px}
  .cs-catcards{gap:10px}
  .cs-catcard{min-height:62px;gap:10px;padding:12px}
  .cs-catcard-ic{width:32px;height:32px;border-radius:8px}
  .cs-catcard-ic svg{width:18px;height:18px}
  .cs-catcard-txt b{font-size:13.5px}
  .cs-catcard-txt em{font-size:11px}
  .cs-catcard-go{display:none}
  .cs-banner-foot{padding:12px;padding-right:10px;padding-bottom:calc(10px + 7px + 8px);gap:8px}
  .cs-banner-cap{max-width:100%}
  .cs-banner-title{font-size:16.5px}
  .cs-banner-kicker{margin-top:6px;padding:2px 8px;font-size:10.5px}
  .cs-banner-sub{margin-top:4px;font-size:11.5px;line-height:1.6}
  .cs-banner-nav{right:10px;bottom:10px;padding:0;background:none}
  .cs-banner-btn{height:28px;padding:0 10px;font-size:11.5px}
  .cs-card{padding:18px 16px 16px}
  .cs-card-name{font-size:16px}
  .cs-card-buy{flex-wrap:wrap;gap:10px}
  .cs-card-buy .cs-buy{width:100%;height:42px}
  .cs-cats{margin-top:22px}
  .cs-cat{height:34px;padding:0 12px;font-size:13px}
  .cs-shelf-lead p,.cs-why-aside p,.cs-faq-lead>p{font-size:13px}
  .cs-data-head span{white-space:normal}
  .cs-poster-act .cs-btn,.cs-cta-act .cs-btn{flex:1 1 auto}
  .cs-sla-item{padding:18px 0}
  .cs-sla-note{gap:10px}
  .cs-sla-note-link{margin-left:0}
  .cs-faq-item summary{padding:16px 0;gap:12px}
  .cs-faq-q{font-size:14px}
  .cs-cta-act{display:grid;grid-template-columns:1fr;gap:10px}
  .cs-cta-act .cs-btn{width:100%}
  .cs-cta-lead{font-size:13px}
  .cs-cta-filters{gap:6px;padding-top:18px}
  .cs-cta-filter{height:34px;padding:0 12px;font-size:12.5px}
  .cs-cta-links a{padding:14px 16px}
  .cs-promo{padding:16px}
  .cs-promo-price b{font-size:23px}
  .cs-shelf-note{font-size:11px}
  .cs-empty{padding:22px 20px;gap:12px}
  .cs-empty-lg{padding:26px 20px}
}

@media (prefers-reduced-motion:reduce){
  .cs-data.on{animation:none}
  .cs-banner-slide{transition:none}
  .cs-card,.cs-btn,.cs-poster-figure img,.cs-faq-card,.cs-buy,
  .cs-catcard,.cs-catcard-go,.cs-promo,.cs-why-item,.cs-cat,.cs-cta-filter{transition:none}
  .cs-card:hover,.cs-catcard:hover,.cs-promo:hover,.cs-why-item:hover{transform:none}
  .cs-catcard:hover .cs-catcard-go{transform:none}
  .cs-poster-figure:hover img{transform:none}
}