.bf-cases{--case-blue:#00adef;--case-ink:#102f45;--case-muted:#607786;--case-line:#dce7ed;max-width:1200px;margin:24px auto 48px;color:var(--case-ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.6;text-align:left;background:#fff}.bf-cases *,.bf-case-controls *{box-sizing:border-box}.bf-cases a{color:inherit;text-decoration:none}.bf-cases button,.bf-cases input,.bf-cases select{font:inherit}.bf-cases button,.bf-cases a,.bf-cases select{touch-action:manipulation}.bf-cases button{cursor:pointer}.bf-cases :focus-visible{outline:3px solid #00adef;outline-offset:4px}.bf-cases h1,.bf-cases h2,.bf-cases h3,.bf-cases p{margin:0}.bf-case-hero{position:relative;overflow:hidden;min-height:340px;padding:46px 48px;background:linear-gradient(112deg,#031f32,#06344d 68%,#064462);border-radius:4px;color:#fff}.bf-case-hero:after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.13;background-image:linear-gradient(#51c9ed 1px,transparent 1px),linear-gradient(90deg,#51c9ed 1px,transparent 1px);background-size:38px 38px;mask-image:linear-gradient(90deg,transparent,black)}.bf-case-hero-copy{position:relative;z-index:2;max-width:550px}.bf-case-eyebrow{color:#7ddfff;font-size:11px;letter-spacing:2.2px;font-weight:700;margin-bottom:18px}.bf-case-hero h1{font-size:40px;line-height:1.35;letter-spacing:1px;font-weight:700}.bf-case-hero h1 span{display:block}.bf-case-hero h1 span:nth-child(2){color:#5dd8ff}.bf-case-hero p{color:#bfd5e1;font-size:14px;max-width:490px;margin:18px 0 22px;line-height:1.9}.bf-cases .bf-case-hero-link{display:inline-flex;color:#fff;font-size:13px;border-bottom:1px solid #4c90aa;padding-bottom:6px}.bf-case-hero-background{position:absolute!important;width:100%;height:100%;inset:0;object-fit:cover;opacity:.45}.bf-case-hero.has-image:before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,#032034e8,transparent)}.bf-case-diagram{position:absolute;right:44px;top:36px;width:440px;height:280px;z-index:1}.bf-case-orbit{position:absolute;border:1px solid #3eb2df45;width:320px;height:240px;border-radius:50%;left:60px;top:20px;transform:rotate(-24deg)}.bf-case-orbit.small{width:230px;height:160px;left:105px;top:60px;transform:rotate(28deg);border-style:dashed}.bf-case-diagram-core{position:absolute;left:128px;top:96px;width:190px;height:90px;background:#0d4057e6;box-shadow:0 0 55px #00bcff20;border:1px solid #48bfe97a;padding:15px 20px;transform:skewY(-3deg)}.bf-case-diagram-core strong{display:block;font-size:24px;letter-spacing:2px;color:#fff}.bf-case-diagram-core span{display:block;font-size:11px;letter-spacing:2px;color:#71dbff}.bf-case-node{position:absolute;display:flex;align-items:center;gap:12px;border:1px solid #4db4d654;border-left:3px solid #39cdff;background:#062b40;padding:11px 16px;box-shadow:0 8px 20px #00121f66;font-size:13px;color:#d9f5ff}.bf-case-node small{color:#47cfff;font-size:10px;font-family:Arial}.bf-case-node.node-0{top:9px;left:55px}.bf-case-node.node-1{top:97px;right:0}.bf-case-node.node-2{bottom:8px;left:50px}.bf-case-library{padding:36px 0 0;scroll-margin-top:24px}.bf-case-section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:22px}.bf-case-section-heading small,.bf-case-cta small{font-size:10px;color:#168bae;letter-spacing:1.8px;font-weight:700}.bf-case-section-heading h2{font-size:25px;margin-top:4px}.bf-case-section-heading>span{color:var(--case-muted);font-size:12px}.bf-case-filters{border-top:1px solid var(--case-line);border-bottom:1px solid var(--case-line);padding:18px 0;display:grid;gap:18px}.bf-case-categories{display:flex;flex-wrap:wrap;gap:8px}.bf-case-categories button{border:0;background:#f3f7f9;border-radius:3px;padding:9px 16px;font-size:13px;color:#526c7d}.bf-case-categories button:hover{color:#007dae;background:#e7f6fc}.bf-case-categories .is-active{background:#007fad;color:#fff}.bf-case-search-row{display:flex;gap:12px}.bf-case-search{display:flex;align-items:center;gap:12px;border:1px solid var(--case-line);border-radius:3px;padding:0 13px;max-width:500px;flex:1;background:#fff}.bf-case-search span{font-size:25px;color:#4c7c96;line-height:1}.bf-case-search input{border:0;outline:0;min-width:0;width:100%;padding:11px 0;background:transparent;font-size:13px;color:#183e55}.bf-case-search:focus-within{border-color:#00adef;box-shadow:0 0 0 2px #00adef20}.bf-case-search-row select{max-width:180px;border:1px solid var(--case-line);border-radius:3px;background:#fff;color:#536c7a;padding:0 28px 0 13px;font-size:13px;min-height:42px}.bf-case-empty{min-height:288px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(#fff,#f8fbfd);padding:40px 24px}.bf-case-empty h3{font-size:19px;margin:14px 0 8px}.bf-case-empty p{font-size:13px;color:var(--case-muted);max-width:540px}.bf-case-empty-symbol{position:relative;width:64px;height:55px}.bf-case-empty-symbol span{position:absolute;left:12px;top:12px;width:44px;height:34px;border:1.5px solid #60b7d8;border-radius:4px;background:#f2fbff;transform:rotate(-8deg)}.bf-case-empty-symbol i{position:absolute;left:7px;top:21px;width:44px;height:30px;border:1.5px solid #128daf;border-radius:4px;background:#f0faff}.bf-case-empty-symbol b{position:absolute;width:20px;height:1.5px;background:#7bb6cd;left:18px;top:31px;box-shadow:0 7px 0 #c3dae5}.bf-case-text-button{border:0;color:#0785ae;background:transparent;padding:12px;font-size:13px}.bf-case-cta{background:#edf7fb;border:1px solid #dcecf3;padding:28px 32px;display:flex;justify-content:space-between;gap:24px;align-items:center;margin-top:32px;border-radius:4px}.bf-case-cta h2{font-size:21px;margin:5px 0 8px}.bf-case-cta p{font-size:13px;color:#587183}.bf-cases .bf-case-button{border:0;background:#008fbe;color:#fff;font-size:13px;padding:12px 22px;display:inline-block;border-radius:3px;white-space:nowrap}.bf-cases .bf-case-button:hover{background:#00779f}.bf-case-results{padding-top:24px}.bf-case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.bf-case-card{display:flex;flex-direction:column;border:1px solid var(--case-line);border-radius:5px;overflow:hidden;background:#fff;transition:box-shadow .18s,transform .18s;min-width:0}.bf-case-card:hover{box-shadow:0 12px 28px #133b5412;transform:translateY(-3px);border-color:#7bbdd6}.bf-case-card-image{position:relative;aspect-ratio:16/10;background:#eff5f8;overflow:hidden}.bf-case-card-image img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}.bf-case-card:hover img{transform:scale(1.025)}.bf-case-image-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:24px;letter-spacing:3px;color:#9bb3c1}.bf-case-card-body{padding:22px;display:flex;flex-direction:column;flex:1;min-width:0}.bf-case-tags{display:flex;flex-wrap:wrap;gap:6px}.bf-case-tags span{font-size:11px;padding:3px 8px;background:#eef8fc;border-radius:2px;color:#067fa7}.bf-case-card h3{font-size:19px;line-height:1.5;margin:12px 0 10px;overflow-wrap:anywhere}.bf-case-card p{font-size:13px;color:var(--case-muted);line-height:1.9;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.bf-case-card-footer{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #edf1f4;margin-top:auto;padding-top:16px;font-size:12px;color:#648293}.bf-case-card p+.bf-case-card-footer{margin-top:20px}.bf-case-card-footer span:last-child{color:#0484b0;white-space:nowrap}.bf-case-feature{display:grid;grid-template-columns:1.15fr 1fr;margin-bottom:24px}.bf-case-feature .bf-case-card-image{min-height:300px;height:100%;aspect-ratio:auto}.bf-case-feature .bf-case-card-body{padding:36px}.bf-case-feature h3{font-size:26px}.bf-case-feature p{-webkit-line-clamp:4;font-size:14px}.bf-case-feature-label{position:absolute;left:18px;top:18px;color:#fff;background:#00496fcc;font-size:11px;padding:6px 11px}.bf-case-more{display:block;margin:28px auto 0;background:#fff;color:#087da3;border:1px solid #add5e5;border-radius:3px;padding:10px 25px}.bf-case-breadcrumb{font-size:13px;color:#6d8593;margin:16px 0 28px}.bf-case-breadcrumb a{color:#0785ae}.bf-case-detail-header{max-width:960px;margin-bottom:26px}.bf-case-detail-header h1{font-size:36px;line-height:1.5;margin:16px 0;overflow-wrap:anywhere}.bf-case-detail-header p{font-size:16px;color:#647c8a;line-height:1.9}.bf-case-detail-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:12px;color:#758d9a;margin-top:18px}.bf-case-detail-cover{background:#f0f6f9;max-height:550px;overflow:hidden;border-radius:5px}.bf-case-detail-cover img{display:block;width:100%;max-height:550px;object-fit:contain}.bf-case-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:64px;margin-top:40px}.bf-case-story section{scroll-margin-top:24px;margin-bottom:34px}.bf-case-story h2,.bf-case-related h2{font-size:23px;margin-bottom:18px;display:flex;align-items:center;gap:16px}.bf-case-story h2 span{font-size:12px;color:#038bb5;font-family:Arial;border-bottom:2px solid #47c9ef;padding-bottom:4px}.bf-case-story p{white-space:pre-wrap;overflow-wrap:anywhere;color:#4e6573;line-height:2;font-size:15px}.bf-case-gallery figure{margin:0 0 20px}.bf-case-gallery img{display:block;width:100%;height:auto;border-radius:4px}.bf-case-gallery figcaption{font-size:12px;color:#718998;padding:8px 0}.bf-case-detail-aside{align-self:start;position:sticky;top:24px}.bf-case-toc,.bf-case-products,.bf-case-detail-contact{padding:22px;background:#f5f9fb;border:1px solid #e4eef2;border-radius:4px;margin-bottom:18px}.bf-case-detail-aside h3{font-size:15px;margin-bottom:12px}.bf-case-toc a,.bf-case-products a{display:block;font-size:13px;margin:14px 0;color:#476879}.bf-case-toc a span{font-size:10px;color:#1599c2;margin-right:15px}.bf-case-detail-contact p{font-size:13px;color:#5d7b8c;margin-bottom:18px}.bf-case-related{margin-top:36px}.bf-case-controls{padding:16px;color:#254459;font-family:"Microsoft YaHei",Arial,sans-serif}.bf-case-controls h3{font-size:17px;margin:0 0 8px}.bf-case-admin-help{font-size:12px;line-height:1.8;color:#728494;margin:8px 0 14px}.bf-case-admin-tabs,.bf-case-admin-actions{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.bf-case-controls button{cursor:pointer}.bf-case-admin-tabs button,.bf-case-admin-actions button,.bf-case-add{font-size:12px;border:1px solid #d4e2e9;border-radius:3px;padding:7px 10px;background:white;color:#34627b}.bf-case-admin-tabs button.is-active,.bf-case-add{color:#007cab;background:#eaf8fd;border-color:#78c8e3}.bf-case-controls button:disabled{opacity:.4;cursor:not-allowed}.bf-case-field{margin:15px 0}.bf-case-field>label{display:block;font-size:12px;margin-bottom:7px;color:#4e697b}.bf-case-controls input:not([type=checkbox]),.bf-case-controls textarea,.bf-case-controls select{width:100%;border:1px solid #d7e3ea;border-radius:3px;padding:8px 10px;min-height:34px;background:#fff;color:#284b60;font-size:12px;line-height:1.6}.bf-case-controls textarea{resize:vertical;min-height:90px;font-family:inherit}.bf-case-admin-list{max-height:255px;overflow:auto;border:1px solid #e3edf2;border-radius:4px}.bf-case-admin-list button{width:100%;display:flex;text-align:left;gap:9px;align-items:center;border:0;border-bottom:1px solid #edf2f5;background:#fff;padding:10px;color:#34596e;font-size:12px}.bf-case-admin-list button.is-active{background:#eaf8fd;box-shadow:inset 3px 0 #00adef}.bf-case-admin-list img{width:42px;height:32px;object-fit:cover;border-radius:2px}.bf-case-admin-list small{font-size:10px;color:#93a4ae;display:block}.bf-case-admin-edit{border-top:1px solid #dce8ee;margin-top:18px;padding-top:16px}.bf-case-checkboxes{display:flex;gap:8px 14px;flex-wrap:wrap;border:1px solid #e0ebf1;padding:12px;font-size:12px}.bf-case-checkboxes legend{padding:0 5px}.bf-case-checkboxes label{display:flex;align-items:center;gap:5px}.bf-case-admin-toggle{display:flex;align-items:center;gap:8px;font-size:12px;margin:15px 0}.bf-case-admin-warning{padding:10px;background:#fff7e9;color:#94651a;font-size:12px;line-height:1.8}.bf-case-subedit{padding:10px;background:#f5f9fb;margin:12px 0;border-radius:3px}.bf-case-add{margin-top:12px;width:100%}.bf-case-delete{color:#c64646!important}.bf-case-admin-preview{border:1px solid #b5d9e8;margin-top:16px;padding:12px}.bf-case-admin-preview .bf-case-admin-help{margin-bottom:0}
@media(max-width:900px){.bf-cases{margin:16px}.bf-case-diagram{opacity:.38;right:-45px}.bf-case-hero-copy{max-width:520px}.bf-case-hero{padding:36px 28px}.bf-case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bf-case-detail-layout{grid-template-columns:minmax(0,1fr);gap:12px}.bf-case-detail-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.bf-case-feature .bf-case-card-body{padding:24px}.bf-case-feature h3{font-size:23px}}
@media(max-width:600px){.bf-cases{margin:12px}.bf-case-hero{padding:30px 22px;min-height:310px}.bf-case-hero h1{font-size:30px}.bf-case-eyebrow{font-size:9px;letter-spacing:1.5px}.bf-case-hero p{font-size:13px}.bf-case-diagram{display:none}.bf-case-library{padding-top:26px}.bf-case-section-heading h2{font-size:23px}.bf-case-categories{gap:6px}.bf-case-categories button{padding:8px 10px;font-size:12px}.bf-case-search-row{flex-wrap:wrap;gap:8px}.bf-case-search{flex-basis:100%;max-width:none}.bf-case-search-row select{flex:1;max-width:none}.bf-case-grid,.bf-case-feature{grid-template-columns:minmax(0,1fr)}.bf-case-feature .bf-case-card-image{min-height:0;aspect-ratio:16/10}.bf-case-cta{display:block;padding:24px}.bf-case-cta h2{font-size:19px}.bf-case-cta .bf-case-button{margin-top:20px}.bf-case-detail-header h1{font-size:27px}.bf-case-detail-aside{display:block}.bf-case-detail-layout{margin-top:26px}.bf-case-empty{min-height:280px}.bf-case-story p{font-size:14px}}
.bf-cases,.bf-case-library,.bf-case-story section{scroll-margin-top:215px}
@media(prefers-reduced-motion:reduce){.bf-cases *{transition:none!important;scroll-behavior:auto!important}}

/* A single aligned library panel: title, category chips, search and results. */
.bf-cases:has(>.bf-case-library){background:transparent}
.bf-cases .bf-case-library{margin-top:24px;padding:28px 48px;background:#fff;border:1px solid #e1ebf0;border-radius:16px}
.bf-cases .bf-case-section-heading{margin:0 0 22px;align-items:center;gap:16px}
.bf-cases .bf-case-section-heading>div{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 18px}
.bf-cases .bf-case-section-heading h2{order:0;margin:0;font-size:24px;line-height:1.5}
.bf-cases .bf-case-section-heading small{order:1;font-size:10px;font-weight:500;letter-spacing:1.5px;color:#7892a2}
.bf-cases .bf-case-filters{border:0;padding:0;gap:18px}
.bf-cases .bf-case-categories{gap:8px}
.bf-cases .bf-case-categories button{padding:9px 15px;border-radius:6px;background:#f1f6f9;color:#536f80;font-size:13px;line-height:20px}
.bf-cases .bf-case-categories button:hover{background:#e6f5fc;color:#007da8}
.bf-cases .bf-case-categories button.is-active{background:#008fb9;color:#fff}
.bf-cases .bf-case-search-row{padding:12px;background:#f6f9fb;border:1px solid #e8eff3;border-radius:8px;gap:10px}
.bf-cases .bf-case-search{max-width:none;min-width:0;flex:1;border-radius:5px}
.bf-cases .bf-case-search input{padding:10px 0}
.bf-cases .bf-case-search-row select{width:148px;max-width:180px;min-height:42px;border-radius:5px}
.bf-cases .bf-case-library>.bf-case-empty{min-height:230px;background:transparent;padding:30px 20px 16px}
.bf-cases .bf-case-library>.bf-case-empty h3{font-size:18px}
.bf-cases .bf-case-results{padding-top:28px}
.bf-cases:has(>.bf-case-library)>.bf-case-cta{margin-top:24px}
@media(max-width:1100px){.bf-cases .bf-case-library{padding:26px 32px}.bf-cases .bf-case-search-row select{width:138px}}
@media(max-width:600px){
 .bf-cases .bf-case-library{padding:22px 18px;margin-top:18px;border-radius:14px}
 .bf-cases .bf-case-section-heading{margin-bottom:18px;align-items:flex-start}
 .bf-cases .bf-case-section-heading>div{display:flex;flex-direction:column;gap:3px}
 .bf-cases .bf-case-section-heading h2{font-size:22px}
 .bf-cases .bf-case-section-heading small{font-size:9px;letter-spacing:1.3px}
 .bf-cases .bf-case-categories{gap:7px}
 .bf-cases .bf-case-categories button{padding:7px 10px;font-size:12px}
 .bf-cases .bf-case-search-row{padding:10px;gap:8px}
 .bf-cases .bf-case-search{flex:1 1 100%}
 .bf-cases .bf-case-search-row select{width:auto;max-width:none;min-width:0;flex:1;padding-left:10px;padding-right:20px;font-size:12px}
 .bf-cases .bf-case-library>.bf-case-empty{padding:28px 0 12px;min-height:220px}
 .bf-cases .bf-case-library>.bf-case-empty p{font-size:12px}
}

.bf-case-brand-picker{padding:10px;border:1px solid #dce7ee;border-radius:5px;background:#fff}
.bf-case-brand-options{max-height:160px;overflow-y:auto;margin-top:9px;border-top:1px solid #edf2f6;padding-top:5px}
.bf-case-brand-options label{display:flex;align-items:flex-start;gap:7px;padding:6px 2px;font-size:12px;color:#466579;line-height:1.5;cursor:pointer}
.bf-case-brand-options input{flex:none;margin-top:3px;accent-color:#009bc7}
.bf-case-brand-selected{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:9px}
.bf-case-brand-selected button{max-width:100%;overflow-wrap:anywhere;border:1px solid #bfdfec;background:#edf8fd;color:#05799e;padding:4px 7px;border-radius:4px;font-size:11px;text-align:left}
.bf-cases .bf-case-brands{display:flex;flex-wrap:wrap;align-items:baseline;gap:5px 8px;color:#587587;font-size:12px;line-height:1.7;margin-top:12px;overflow-wrap:anywhere}
.bf-case-brands>span:first-child{font-size:11px;color:#8095a2;flex:none}
.bf-cases .bf-case-detail-header>.bf-case-brands{font-size:14px;margin-top:18px}
.bf-case-brand-picker .bf-case-admin-help{margin:8px 0 0;font-size:11px}
.bf-cases .bf-case-brands+.bf-case-card-footer{margin-top:16px}

/* 应用案例页头右侧：工况需求 → 元件选型 → 系统应用 流程图（替换原斜卡片 + 椭圆轨道） */
.bf-case-diagram .bf-case-flow{display:block;width:100%;height:100%;overflow:visible}
.bf-case-diagram .bf-case-flow text{font-family:inherit}