:root{--blue:#0B5FFF;--navy:#0A1F44;--orange:#FF6A00;--dark:#0d0d12;--gray:#F5F7FA;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb}*{margin:0;padding:0;box-sizing:border-box;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif}.content{max-width:1180px;margin:0 auto;padding:0 24px}.subtitle{display:inline-block;background:#e6edff;color:var(--blue);font-size:13px;font-weight:600;padding:6px 16px;border-radius:20px;margin-bottom:14px}.cases_banner{position:relative;overflow:hidden;background:radial-gradient(circle at 18% 20%,rgba(11,95,255,0.18),transparent 28%),radial-gradient(circle at 82% 18%,rgba(255,106,0,0.12),transparent 26%),linear-gradient(135deg,#f7f9ff,#eef3ff);padding:76px 0 54px}.cases_banner:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(11,95,255,0.06) 1px,transparent 1px),linear-gradient(90deg,rgba(11,95,255,0.06) 1px,transparent 1px);background-size:36px 36px;mask-image:linear-gradient(to 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.filter_options button{border:1px solid #d9e2f0;background:#fff;color:#334155;padding:8px 18px;border-radius:24px;font-size:14px;cursor:pointer;transition:0.2s}.cases_list .filter_options button:hover,.cases_list .filter_options button.active{background:var(--blue);border-color:var(--blue);color:#fff}.cases_list .search_box{width:280px;height:46px;border:1px solid #d9e2f0;border-radius:24px;display:flex;align-items:center;padding:0 16px;gap:8px;background:#fff}.cases_list .search_box input{border:none;outline:none;width:100%;font-size:14px;color:#374151}.cases_list .search_box span{color:#94a3b8}@media (max-width:880px){.cases_list .filter_row{grid-template-columns:1fr}.cases_list .search_box{width:100%}}.cases_list .case_grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.cases_list .case_card{background:#fff;border:1px solid #e8edf7;border-radius:18px;overflow:hidden;box-shadow:0 14px 34px rgba(0,0,0,0.05);transition:0.25s}.cases_list 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span{display:inline-block;margin-top:8px;color:var(--muted);font-size:14px}.cases_list .case_body{padding:22px}.cases_list .case_body h3{font-size:20px;color:var(--navy);margin-bottom:8px}.cases_list .case_body p{color:var(--muted);font-size:14px}.cases_list .case_tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.cases_list .case_tags span{background:#f1f5ff;color:#315aa8;font-size:12px;padding:5px 10px;border-radius:20px}@media (max-width:960px){.cases_list .case_grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:620px){.cases_list .case_grid{grid-template-columns:1fr}}