/* ============ NVC 风格品牌首页 ============ */
.brand-home{width:100%;max-width:100%;box-sizing:border-box;background:#fff;color:#1b2b24;margin:-4px 0 0 0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;overflow:hidden;overflow-x:clip}
.bh-wrap{max-width:1280px;margin:0 auto;padding:0 44px}
.bh-kicker{display:flex;align-items:center;gap:12px;font-size:11px;letter-spacing:3px;color:#6d8a7a;text-transform:uppercase;margin-bottom:20px}
.bh-kicker::before{content:'';width:34px;height:2px;background:#0fae6f;display:inline-block}
.bh-wrap-dark .bh-kicker{color:#9fc0ae}
.bh-title-light{font-weight:400;color:#fff;letter-spacing:-1px;margin:0}
.bh-title-dark{font-weight:400;color:#123128;letter-spacing:-1px;margin:0}
.bh-sub{font-size:16px;line-height:2;color:#6a7f74}

/* ---------- 首屏 ---------- */
.bh-hero{position:relative;min-height:86vh;display:flex;align-items:center;overflow:hidden;color:#fff;background:#0d2b21}
.bh-hero-bg{position:absolute;inset:0;background:
    radial-gradient(1200px 600px at 80% -10%, #15543b 0%, transparent 55%),
    linear-gradient(120deg,#0a2119 0%,#0d2b21 45%,#123a2b 100%);animation:bh-bg-breathe 10s ease-in-out infinite alternate}
.bh-hero-bg::after{content:'';position:absolute;inset:-30%;background:radial-gradient(circle at 50% 50%,rgba(94,227,166,.12),transparent 28%);animation:bh-light-sweep 12s ease-in-out infinite alternate;pointer-events:none}
.bh-hero-grid{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:34px 34px;animation:bh-grid-drift 18s linear infinite}
.bh-hero-inner{position:relative;z-index:2;width:100%;max-width:100%;box-sizing:border-box;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;min-height:86vh;padding:120px 0 90px}
.bh-hero-inner>*{min-width:0;animation:bh-hero-in .9s both ease-out}.bh-hero-visual{animation:bh-hero-in 1.1s .15s both ease-out}
.bh-hero-circle{animation:bh-float 6s ease-in-out infinite, bh-circle-glow 4s ease-in-out infinite alternate}
.bh-hero-visual img{animation:bh-product-float 5s ease-in-out infinite;transition:filter .35s ease,transform .35s ease}.bh-hero-visual:hover img{filter:drop-shadow(0 35px 50px rgba(94,227,166,.25));transform:scale(1.03)}
.bh-pill-1,.bh-pill-2{animation:bh-pill-in 1s .7s both ease-out}.bh-pill-2{animation:bh-pill-in 1s 1s both ease-out,bh-pill-pulse 3s 2s ease-in-out infinite}
@keyframes bh-bg-breathe{from{filter:saturate(1)}to{filter:saturate(1.25) brightness(1.08)}}
@keyframes bh-light-sweep{from{transform:translate(-18%,-8%) scale(.8);opacity:.35}to{transform:translate(18%,10%) scale(1.2);opacity:.8}}
@keyframes bh-grid-drift{from{background-position:0 0}to{background-position:68px 68px}}
@keyframes bh-hero-in{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes bh-product-float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-8px) rotate(.6deg)}}
@keyframes bh-circle-glow{from{box-shadow:0 30px 90px rgba(0,0,0,.45)}to{box-shadow:0 30px 100px rgba(15,174,111,.18)}}
@keyframes bh-pill-in{from{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}
@keyframes bh-pill-pulse{0%,100%{box-shadow:0 16px 40px rgba(15,174,111,.4)}50%{box-shadow:0 16px 55px rgba(15,174,111,.72)}}
@media(prefers-reduced-motion:reduce){.bh-hero-bg,.bh-hero-bg::after,.bh-hero-grid,.bh-hero-inner>*,.bh-hero-visual,.bh-hero-circle,.bh-hero-visual img,.bh-pill-1,.bh-pill-2{animation:none!important}}
.bh-hero-since{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.22);border-radius:40px;padding:8px 18px;font-size:12px;letter-spacing:2px;color:#d7e6dc;margin-bottom:32px}
.bh-hero-since .dec{color:#5ee3a6;font-weight:600}
.bh-hero h1{font-size:clamp(40px,5.2vw,72px);font-weight:400;line-height:1.1;letter-spacing:-2.5px;margin:0 0 26px;color:#fff}
.bh-hero h1 em{font-style:normal;color:#5ee3a6}
.bh-hero p{max-width:520px;color:#c5d8cc;font-size:16px;line-height:1.95;margin:0 0 40px}
.bh-actions{display:flex;gap:14px;flex-wrap:wrap}
.bh-btn{display:inline-flex;align-items:center;gap:10px;padding:15px 28px;text-decoration:none;font-size:14px;letter-spacing:.5px;border-radius:3px;transition:.25s;cursor:pointer}
.bh-btn-primary{background:#0fae6f;color:#fff;border:1px solid #0fae6f}
.bh-btn-primary:hover{background:#0c8f5b;color:#fff}
.bh-btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.bh-btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08)}
.bh-hero-extra{margin-top:56px;display:flex;gap:44px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding-top:30px}
.bh-hero-extra .num{display:block;font-size:30px;font-weight:300;color:#fff;letter-spacing:-1px}
.bh-hero-extra .lbl{font-size:12px;color:#8fb4a0;letter-spacing:1.5px;text-transform:uppercase}
.bh-hero-managed{min-height:86vh;display:flex;align-items:stretch}.bh-managed-slides{position:relative;z-index:3;width:100%;min-height:86vh}.bh-managed-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .8s ease}.bh-managed-slide.is-active{opacity:1;pointer-events:auto}.bh-managed-slide [data-lang]{display:none}.bh-managed-slide.lang-zh [data-lang="zh"],.bh-managed-slide.lang-en [data-lang="en"]{display:revert}
.bh-hero-empty span{font-size:14px}.bh-hero-empty a{font-size:13px;color:#5ee3a6;text-decoration:none;border:1px solid #5ee3a6;padding:9px 16px;border-radius:4px}
.bh-hero-circle{position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,#15543b 0%,#0d2b21 70%);box-shadow:0 30px 90px rgba(0,0,0,.45)}
.bh-hero-visual img{position:relative;z-index:2;width:88%;height:470px;object-fit:contain;filter:drop-shadow(0 30px 40px rgba(0,0,0,.4))}
.bh-hero-pill{position:relative;z-index:3;position:absolute}
.bh-pill-1{top:6%;left:-6%;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);padding:12px 18px;border-radius:50px;font-size:13px;color:#e8f3ec;backdrop-filter:blur(4px)}
.bh-pill-2{bottom:12%;right:-8%;background:#0fae6f;color:#fff;padding:14px 20px;border-radius:50px;font-size:13px;font-weight:600;box-shadow:0 16px 40px rgba(15,174,111,.4)}
.bh-placeholder{position:relative;z-index:1;font-size:110px;color:#5ee3a6}

/* ---------- 品牌介绍 ---------- */
.bh-about{padding:110px 0;background:#f6f8f4}
.bh-about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.bh-about-media{display:flex;gap:20px}
.bh-about-media .col{display:flex;flex-direction:column;gap:20px}
.bh-about-tile{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 14px 40px rgba(17,59,42,.06)}
.bh-about-tile img{width:100%;height:100%;object-fit:cover;display:block}
.bh-about-tile.t1{height:360px}.bh-about-tile.t2{height:260px}
.bh-about h2{font-size:clamp(28px,3.2vw,44px);font-weight:400;line-height:1.25;letter-spacing:-1px;color:#123128;margin:0 0 24px}
.bh-about h2 em{font-style:normal;color:#0fae6f}
.bh-about-copy{color:#5f7a6c;font-size:15px;line-height:2.1;margin:0 0 20px}
.bh-about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0 32px}
.bh-about-point{display:flex;align-items:center;gap:10px;font-size:14px;color:#1f4033}
.bh-about-point i{color:#0fae6f;font-size:17px}
.bh-more{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:#0f7e52;font-size:14px;font-weight:600;border-bottom:2px solid #bde5d2;padding-bottom:4px}

/* ---------- 产品分类 ---------- */
.bh-section{padding:100px 0}
.bh-section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:46px}
.bh-section-head h2{font-size:clamp(26px,2.8vw,40px);font-weight:400;letter-spacing:-1px;color:#123128;margin:0}
.bh-section-head .right{color:#0f7e52;font-size:13px;display:flex;align-items:center;gap:8px}
.bh-cats{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.bh-cat{position:relative;display:block;height:280px;border-radius:8px;overflow:hidden;text-decoration:none;color:#fff;background:#123128}
.bh-cat img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.bh-cat-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#173c2e,#0d2b21);color:#5ee3a6;font-size:42px}
.bh-cat:hover img{transform:scale(1.06)}
.bh-cat-veil{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(6,20,14,.82) 100%)}
.bh-cat-info{position:absolute;left:0;right:0;bottom:0;padding:18px}
.bh-cat-info .en{font-size:10px;letter-spacing:2px;color:#7fd6aa;text-transform:uppercase;display:block;margin-bottom:5px}
.bh-cat-info b{font-size:17px;font-weight:600;color:#fff}
.bh-cat-info .go{position:absolute;right:16px;bottom:18px;font-size:18px;color:#5ee3a6}

/* ---------- 应用场景 ---------- */
.bh-scenes{background:#0d2b21;color:#fff}
.bh-scenes .bh-section-head h2{color:#fff}
.bh-scenes .bh-section-head .right{color:#7fd6aa}
.bh-scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.bh-scene{position:relative;display:block;height:360px;border-radius:8px;overflow:hidden;text-decoration:none;color:#fff}
.bh-scene img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.bh-scene:hover img{transform:scale(1.07)}
.bh-scene-veil{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,18,12,.88) 100%)}
.bh-scene-info{position:absolute;left:0;right:0;bottom:0;padding:22px}
.bh-scene-info .cn{font-size:21px;font-weight:400;letter-spacing:1px}
.bh-scene-info .en{font-size:12px;color:#7fd6aa;letter-spacing:1.5px;text-transform:uppercase;margin-top:6px}
.bh-scene-info .desc{font-size:12.5px;color:#cbdccf;line-height:1.7;margin-top:8px;max-width:240px}

/* ---------- 精选产品 ---------- */
.bh-products{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.bh-product{text-decoration:none;color:inherit}
.bh-product-media{position:relative;height:300px;background:#f0f4ef;border-radius:8px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.bh-product-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.bh-product:hover .bh-product-media img{transform:scale(1.05)}
.bh-product-en{position:absolute;bottom:12px;left:16px;font-size:10px;letter-spacing:2px;color:#fff;background:rgba(13,43,33,.7);padding:4px 10px;border-radius:20px;text-transform:uppercase}
.bh-product-ph{font-size:46px;color:#a9c1b2}
.bh-product-info{padding:16px 2px}
.bh-product-info h3{font-size:16px;font-weight:500;color:#123128;margin:0 0 6px}
.bh-product-info p{font-size:13px;color:#7c9286;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0}

/* ---------- 企业能力 ---------- */
.bh-caps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.bh-cap{background:#f6f8f4;border:1px solid #e6ece6;border-radius:8px;padding:34px 26px;transition:.25s}
.bh-cap:hover{background:#0fae6f;border-color:#0fae6f;color:#fff}
.bh-cap i{font-size:30px;color:#0fae6f;display:block;margin-bottom:18px;transition:.25s}
.bh-cap:hover i{color:#fff}
.bh-cap .num{font-size:13px;color:#0f7e52;letter-spacing:2px;text-transform:uppercase;display:block;margin-bottom:8px;transition:.25s}
.bh-cap:hover .num{color:#7fd6aa}
.bh-cap h3{font-size:17px;font-weight:600;color:#123128;margin:0 0 10px;transition:.25s}
.bh-cap:hover h3{color:#fff}
.bh-cap p{font-size:13px;line-height:1.8;color:#6a7f74;margin:0;transition:.25s}
.bh-cap:hover p{color:#d8eae0}

/* ---------- 工程案例 ---------- */
.bh-cases{display:grid;grid-template-columns:3fr 3fr 2fr;gap:18px}
.bh-case{position:relative;display:block;height:400px;border-radius:8px;overflow:hidden;text-decoration:none;color:#fff}
.bh-case.wide{height:400px}
.bh-case img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.bh-case:hover img{transform:scale(1.05)}
.bh-case-veil{position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,18,12,.9) 100%)}
.bh-case-info{position:absolute;left:0;right:0;bottom:0;padding:22px}
.bh-case-tag{display:inline-block;background:#0fae6f;color:#fff;font-size:11px;letter-spacing:1px;padding:4px 12px;border-radius:20px;margin-bottom:10px}
.bh-case-info h3{font-size:19px;font-weight:500;margin:0 0 6px}
.bh-case-info p{font-size:12.5px;color:#cbdccf;margin:0}

/* ---------- 资讯 ---------- */
.bh-news{background:#f6f8f4;padding:92px 0}
.bh-news-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start}
.bh-news-grid>div:first-child{min-width:0}
.bh-news .bh-section-head{margin-bottom:30px}
.bh-news-list{border-top:1px solid #dfe8e0;background:#fff;border-radius:10px;overflow:hidden}
.bh-news-item{display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:18px;align-items:center;text-decoration:none;color:inherit;padding:22px 24px;border-bottom:1px solid #e7eee8;transition:background .25s, padding-left .25s}
.bh-news-item:last-child{border-bottom:0}
.bh-news-item:hover{background:#f9fcfa;padding-left:29px}
.bh-news-num{font-size:12px;color:#0fae6f;font-weight:600;letter-spacing:1px}
.bh-news-item h3{font-size:16px;font-weight:500;color:#123128;margin:0 0 6px;transition:.2s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bh-news-item:hover h3{color:#0f8f5b}
.bh-news-item p{font-size:12.5px;color:#7c9286;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bh-news-date{font-size:11px;color:#93aa9d;white-space:nowrap}
.bh-catside{border-left:1px solid #dfe8e0;padding:4px 0 0 28px}
.bh-catside h3{font-size:16px;font-weight:600;color:#123128;margin:0 0 20px}
.bh-catlink{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-bottom:1px solid #e6ece6;color:#3d5c4d;text-decoration:none;font-size:13px;transition:color .2s,padding-left .2s}
.bh-catlink span:last-child{color:#93aa9d;font-size:11px}
.bh-catlink:hover{color:#0fae6f;padding-left:5px}

/* ---------- CTA ---------- */
.bh-cta{position:relative;background:linear-gradient(120deg,#0a2119,#123a2b);color:#fff;border-radius:14px;overflow:hidden;padding:70px 60px;margin:100px 0}
.bh-cta-bg{position:absolute;right:-80px;top:-80px;font-size:340px;color:rgba(255,255,255,.04)}
.bh-cta h2{font-size:clamp(26px,3vw,42px);font-weight:400;letter-spacing:-1px;color:#fff;margin:0 0 14px}
.bh-cta p{color:#b9d2c3;font-size:15px;max-width:520px;line-height:1.9;margin:0 0 34px}
.bh-cta .bh-actions{position:relative;z-index:1}

/* 响应式 */
@media(max-width:1020px){
.bh-hero-inner{grid-template-columns:1fr;gap:40px;padding-top:140px}
.bh-hero-visual{height:380px}
.bh-hero-circle{width:340px;height:340px}
.bh-about-grid{grid-template-columns:1fr}
.bh-cats{grid-template-columns:repeat(3,1fr)}
.bh-scene-grid{grid-template-columns:repeat(2,1fr)}
.bh-products{grid-template-columns:repeat(2,1fr)}
.bh-caps{grid-template-columns:repeat(2,1fr)}
.bh-cases{grid-template-columns:1fr 1fr}
.bh-news-grid{grid-template-columns:1fr}
}
@media(max-width:700px){
.bh-wrap{padding:0 22px}
.bh-section{padding:66px 0}
.bh-news{padding:66px 0}
.bh-news-item{grid-template-columns:30px minmax(0,1fr);gap:12px;padding:18px 16px}
.bh-news-item:hover{padding-left:20px}
.bh-news-date{grid-column:2;font-size:10px;margin-top:-4px}
.bh-catside{border-left:0;border-top:1px solid #dfe8e0;padding:28px 0 0}
.bh-cats{grid-template-columns:repeat(2,1fr)}
.bh-cat{height:210px}
.bh-scene-grid{grid-template-columns:1fr 1fr}
.bh-scene{height:250px}
.bh-products{grid-template-columns:1fr}
.bh-caps{grid-template-columns:1fr}
.bh-cases{grid-template-columns:1fr}
.bh-cases .bh-case{height:260px}
.bh-section-head{flex-direction:column;gap:14px;align-items:flex-start}
.bh-about-points{grid-template-columns:1fr}
.bh-cta{padding:46px 26px}
.bh-hero h1{letter-spacing:-1px}
.bh-scene-grid .hide-sm{display:none}
}
@keyframes bh-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.bh-hero-circle{animation:bh-float 6s ease-in-out infinite}
.bh-reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;transition-delay:var(--bh-delay,0ms)}
.bh-reveal.is-visible{opacity:1;transform:none}
.bh-cat,.bh-scene,.bh-product,.bh-cap,.bh-case{transition:transform .35s ease,box-shadow .35s ease}
.bh-cat:hover,.bh-scene:hover,.bh-product:hover,.bh-cap:hover,.bh-case:hover{transform:translateY(-6px);box-shadow:0 18px 38px rgba(13,43,33,.14)}
.bh-cat:hover .bh-cat-info .go,.bh-scene:hover .bh-scene-info,.bh-case:hover .bh-case-info{transform:translateX(4px)}
.bh-cat-info .go,.bh-scene-info,.bh-case-info{transition:transform .3s ease}
@media(prefers-reduced-motion:reduce){.bh-hero-circle{animation:none}.bh-reveal{opacity:1;transform:none;transition:none}.bh-cat,.bh-scene,.bh-product,.bh-cap,.bh-case{transition:none}}