/* ============ NVC 风格 · 关于我们 ============ */
.about-page{background:#fff;color:#1b2b24;margin:-4px -12px 0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif}
.ab-wrap{max-width:1280px;margin:0 auto;padding:0 44px}
.ab-kicker{display:flex;align-items:center;gap:12px;font-size:11px;letter-spacing:3px;color:#6d8a7a;text-transform:uppercase;margin-bottom:20px}
.ab-kicker::before{content:'';width:34px;height:2px;background:#0fae6f;display:inline-block}
.ab-section{padding:100px 0}
.ab-head{max-width:720px;margin-bottom:52px}
.ab-head h2{font-size:clamp(28px,3.2vw,44px);font-weight:400;letter-spacing:-1px;color:#123128;line-height:1.25;margin:0}
.ab-head h2 em{font-style:normal;color:#0fae6f}
.ab-head p{color:#5f7a6c;font-size:15px;line-height:2;margin:18px 0 0}

/* ---------- 首屏 ---------- */
.ab-hero{position:relative;min-height:72vh;display:flex;align-items:center;overflow:hidden;color:#fff;background:#0d2b21}
.ab-hero-bg{position:absolute;inset:0;background:
    radial-gradient(1200px 600px at 80% -10%, #15543b 0%, transparent 55%),
    linear-gradient(120deg,#0a2119 0%,#0d2b21 50%,#123a2b 100%)}
.ab-hero-grid{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:34px 34px}
.ab-hero-inner{position:relative;z-index:2;padding:120px 0 90px}
.ab-hero-since{display:inline-block;border:1px solid rgba(255,255,255,.22);border-radius:40px;padding:8px 18px;font-size:12px;letter-spacing:2px;color:#d7e6dc;margin-bottom:34px}
.ab-hero-since b{color:#5ee3a6;font-weight:500;margin:0 6px}
.ab-hero h1{font-size:clamp(38px,5vw,66px);font-weight:400;line-height:1.12;letter-spacing:-2px;margin:0 0 24px;color:#fff;max-width:820px}
.ab-hero h1 em{font-style:normal;color:#5ee3a6}
.ab-hero p{max-width:620px;color:#c5d8cc;font-size:16px;line-height:1.95;margin:0}
.ab-hero-meta{margin-top:44px;display:flex;gap:48px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding-top:30px}
.ab-hero-meta .num{display:block;font-size:30px;font-weight:300;color:#fff;letter-spacing:-1px}
.ab-hero-meta .lbl{font-size:12px;color:#8fb4a0;letter-spacing:1.5px;text-transform:uppercase}

/* ---------- 企业介绍 ---------- */
.ab-about{background:#f6f8f4}
.ab-about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.ab-img-col{display:grid;grid-template-columns:1fr;gap:20px}
.ab-img-main{height:420px;border-radius:10px;overflow:hidden;box-shadow:0 16px 46px rgba(17,59,42,.12)}
.ab-img-main.img-a{height:360px}
.ab-img-main img{width:100%;height:100%;object-fit:cover;display:block}
.ab-about-body{color:#5f7a6c;font-size:15px;line-height:2.1}
.ab-about-body p{margin:0 0 16px}
.ab-about-body strong{color:#123128;font-weight:600}
/* 双语切换：默认隐藏两种语言节点，根据容器上的 lang-zh / lang-en 仅显示对应语言 */
.ab-about-body [data-lang]{display:none}
.ab-about-body.lang-zh [data-lang="zh"],
.ab-about-body.lang-en [data-lang="en"]{display:revert}

/* ---------- 企业数据 ---------- */
.ab-stats{background:#0d2b21;color:#fff}
.ab-stats .ab-head h2{color:#fff}
.ab-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ab-stat{border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:38px 30px;text-align:center;background:rgba(255,255,255,.03)}
.ab-stat .num{font-size:44px;font-weight:300;letter-spacing:-1px;color:#fff}
.ab-stat .num span{color:#5ee3a6;font-size:22px}
.ab-stat .lbl{display:block;font-size:12px;letter-spacing:2px;color:#8fb4a0;text-transform:uppercase;margin-top:12px}
.ab-stat .desc{display:block;font-size:12.5px;color:#a9c6b5;margin-top:8px}

/* ---------- 核心能力 ---------- */
.ab-caps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ab-cap{position:relative;background:#fff;border:1px solid #e6ece6;border-radius:10px;padding:36px 26px 30px;transition:.25s}
.ab-cap:hover{box-shadow:0 16px 40px rgba(17,59,42,.08);transform:translateY(-4px)}
.ab-cap .num{position:absolute;top:26px;right:26px;font-size:34px;font-weight:300;color:#e3ece4}
.ab-cap i{font-size:30px;color:#0fae6f;display:block;margin-bottom:18px}
.ab-cap h3{font-size:17px;font-weight:600;color:#123128;margin:0 0 10px}
.ab-cap p{font-size:13.5px;line-height:1.85;color:#6a7f74;margin:0}
.ab-cap ul{list-style:none;margin:16px 0 0;padding:0}
.ab-cap li{font-size:12.5px;color:#7c9286;padding:5px 0;display:flex;gap:8px;align-items:center}
.ab-cap li i{font-size:13px;color:#0fae6f;margin:0}

/* ---------- 制造流程 ---------- */
.ab-flow{background:#f6f8f4}
.ab-flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:flow}
.ab-flow-item{position:relative;background:#fff;border-radius:10px;padding:30px 22px;border-top:3px solid #0fae6f}
.ab-flow-item::before{counter-increment:flow;content:counter(flow,decimal-leading-zero);font-size:13px;letter-spacing:2px;color:#0fae6f;display:block;margin-bottom:14px}
.ab-flow-item i{font-size:26px;color:#123128;display:block;margin-bottom:14px}
.ab-flow-item h4{font-size:15px;font-weight:600;color:#123128;margin:0 0 8px}
.ab-flow-item p{font-size:12.5px;line-height:1.75;color:#6a7f74;margin:0}

/* ---------- 品质体系 ---------- */
.ab-quality{display:grid;grid-template-columns:1fr 1.4fr;gap:60px;align-items:center}
.ab-quality-img{height:440px;border-radius:10px;overflow:hidden}
.ab-quality-img img{width:100%;height:100%;object-fit:cover}
.ab-quality-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.ab-qrow{background:#f6f8f4;border:1px solid #e6ece6;border-radius:8px;padding:22px}
.ab-qrow i{color:#0fae6f;font-size:22px;display:block;margin-bottom:12px}
.ab-qrow b{display:block;font-size:14.5px;color:#123128;margin-bottom:6px}
.ab-qrow p{font-size:12.5px;color:#6a7f74;line-height:1.7;margin:0}

/* ---------- 服务流程 ---------- */
.ab-serve{background:#0d2b21;color:#fff}
.ab-serve .ab-head h2{color:#fff}
.ab-serve-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ab-serve-item{display:flex;gap:18px;align-items:flex-start;border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:30px 24px;background:rgba(255,255,255,.03)}
.ab-serve-item .step{width:44px;height:44px;flex-shrink:0;border-radius:50%;background:#0fae6f;color:#fff;font-size:17px;display:flex;align-items:center;justify-content:center;font-weight:500}
.ab-serve-item h4{font-size:16px;font-weight:600;color:#fff;margin:2px 0 8px}
.ab-serve-item p{font-size:12.5px;color:#a9c6b5;line-height:1.75;margin:0}

/* ---------- 工程案例 ---------- */
.ab-cases{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ab-case{position:relative;display:block;height:340px;border-radius:10px;overflow:hidden;text-decoration:none;color:#fff}
.ab-case img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.ab-case:hover img{transform:scale(1.05)}
.ab-case-veil{position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(5,18,12,.9) 100%)}
.ab-case-info{position:absolute;left:0;right:0;bottom:0;padding:22px}
.ab-case-tag{display:inline-block;background:#0fae6f;color:#fff;font-size:11px;letter-spacing:1px;padding:4px 12px;border-radius:20px;margin-bottom:10px}
.ab-case-info h3{font-size:18px;font-weight:500;margin:0 0 5px}
.ab-case-info p{font-size:12.5px;color:#cbdccf;margin:0}

/* ---------- CTA ---------- */
.ab-cta{background:#f6f8f4;padding:100px 0}
.ab-cta-box{background:#f6f8f4;border:1px solid #e6ece6;border-radius:14px;padding:70px 60px;text-align:center}
.ab-cta-box h2{font-size:clamp(26px,3vw,40px);font-weight:400;letter-spacing:-1px;color:#123128;margin:0 0 14px}
.ab-cta-box p{color:#5f7a6c;font-size:15px;max-width:520px;line-height:1.9;margin:0 auto 34px}
.ab-btn{display:inline-flex;align-items:center;gap:10px;padding:15px 30px;text-decoration:none;font-size:14px;border-radius:3px;transition:.25s}
.ab-btn-primary{background:#0fae6f;color:#fff}
.ab-btn-primary:hover{background:#0c8f5b;color:#fff}

/* 响应式 */
@media(max-width:1020px){
.ab-about-grid{grid-template-columns:1fr;gap:40px}
.ab-caps,.ab-qa-grid,.ab-stat-grid{grid-template-columns:repeat(2,1fr)}
.ab-flow-grid{grid-template-columns:repeat(2,1fr)}
.ab-quality{grid-template-columns:1fr}
.ab-serve-grid{grid-template-columns:repeat(2,1fr)}
.ab-cases{grid-template-columns:1fr 1fr}
}
@media(max-width:700px){
.ab-wrap{padding:0 22px}
.ab-section{padding:66px 0}
.ab-hero-inner{padding-top:130px}
.ab-caps,.ab-stats-grid,.ab-serve-grid,.ab-cases{grid-template-columns:1fr}
.ab-quality-list{grid-template-columns:1fr}
.ab-cta-box{padding:46px 24px}
.ab-img-main{height:260px}
.ab-flow-grid{grid-template-columns:1fr}
}