/* ==========================================================================
   cozunet.com · 案例库列表页 css/pages/case.css
   版式：浅底大标题页首 + 行业筛选标签条 + 不对称 Bento 案例卡片墙
   ========================================================================== */

/* ---------- 页首：浅底大标题 ---------- */
.cl-hero{padding:150px 0 70px;background:var(--paper);position:relative;overflow:hidden}
.cl-hero::after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border:1px solid var(--line);border-radius:50%;pointer-events:none}
.cl-hero-in{position:relative;z-index:2}
.cl-title{margin:16px 0 18px;max-width:760px;font-size:clamp(30px,4.6vw,54px)}
.cl-desc{color:var(--ink-2);font-size:16px;line-height:2;max-width:680px}
.cl-nums{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:52px;max-width:900px}
.cl-nums div{padding:18px 0 4px;border-top:2px solid var(--brown)}
.cl-nums b{font-family:var(--font-serif);font-size:clamp(26px,3vw,38px);color:var(--brown-deep);display:block;line-height:1.2}
.cl-nums b em{font-style:normal;font-size:.45em;color:var(--brown-soft);margin-left:2px}
.cl-nums span{font-size:13px;color:var(--muted);letter-spacing:.05em}
@media (max-width:760px){.cl-nums{grid-template-columns:1fr 1fr;gap:16px}}

/* ---------- 筛选标签 ---------- */
.cl-filter-sec{padding:26px 0 8px;background:var(--paper)}
.cl-filter{display:flex;flex-wrap:wrap;gap:10px;position:sticky;top:64px;background:var(--paper);padding:14px 0;z-index:50;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.cl-tab{display:inline-flex;align-items:center;gap:7px;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--ink-2);font-size:13.5px;letter-spacing:.04em;transition:all .3s var(--ease);cursor:pointer}
.cl-tab i{font-style:normal;font-size:11px;color:var(--muted);background:var(--paper);border-radius:99px;padding:1px 8px}
.cl-tab:hover{border-color:var(--brown-soft);color:var(--brown)}
.cl-tab.on{background:var(--brown);border-color:var(--brown);color:#fff}
.cl-tab.on i{background:rgba(255,255,255,.16);color:rgba(255,255,255,.85)}
.cl-count{margin-top:14px;font-size:13px;color:var(--muted);letter-spacing:.06em}
.cl-count b{color:var(--brown);font-family:var(--font-serif);font-size:16px;margin:0 2px}

/* ---------- Bento 卡片墙 ---------- */
.cl-grid-sec{padding:44px 0 30px;background:var(--paper)}
.cl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.cl-card{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .5s var(--ease),box-shadow .5s var(--ease);position:relative}
.cl-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.cl-card.span2{grid-column:span 2}
.cl-media{overflow:hidden}
.cl-media img{width:100%;height:210px;object-fit:cover;transition:transform .9s var(--ease)}
.cl-card.span2 .cl-media img{height:260px}
.cl-card:hover .cl-media img{transform:scale(1.05)}
.cl-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.cl-body h3{font-size:18px;line-height:1.45}
.cl-body p{font-size:13.5px;color:var(--ink-2);line-height:1.9;flex:1}
.cl-more{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--brown);font-weight:500;margin-top:6px}
.cl-more svg{width:14px;height:14px;transition:transform .35s var(--ease)}
.cl-card:hover .cl-more svg{transform:translateX(5px)}
.cl-card.hide{display:none}
@media (max-width:980px){.cl-grid{grid-template-columns:1fr 1fr}.cl-card.span2{grid-column:span 2}}
@media (max-width:640px){.cl-grid{grid-template-columns:1fr}.cl-card.span2{grid-column:span 1}.cl-media img{height:200px}}

/* ---------- 底部 CTA ---------- */
.cl-cta{background:var(--brown-deep);padding:76px 0;margin-top:60px}
.cl-cta-in{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cl-cta-copy h2{color:#fff;font-size:clamp(23px,2.8vw,32px);margin-bottom:10px}
.cl-cta-copy p{color:rgba(255,255,255,.68);font-size:14.5px;line-height:2;max-width:560px}
.cl-cta-btns{display:flex;gap:16px;flex-wrap:wrap}