:root{
  --bg:#0b0b0c;
  --bg2:#131315;
  --bg3:#1b1b1e;
  --card:#18181a;
  --line:#2a2a2e;
  --gold:#f5b301;
  --gold2:#ffd54d;
  --txt:#f5f1ea;
  --muted:#a09a90;
  --dim:#6b665e;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:88px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:13px;font-weight:600;letter-spacing:.2em;text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold)}
.h2{font-size:clamp(26px,3.6vw,40px);font-weight:700;line-height:1.25;margin:14px 0 12px}
.lead{color:var(--muted);font-size:16px;max-width:680px}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.center .eyebrow{justify-content:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:.25s}
.btn-gold{background:var(--gold);color:#131313}
.btn-gold:hover{background:var(--gold2);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:var(--txt)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}

.topbar{background:#000;border-bottom:1px solid #1f1f22;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;color:var(--muted)}
.topbar a:hover{color:var(--gold)}
.topbar .tb-right{display:flex;gap:22px}

nav{position:sticky;top:0;z-index:100;background:rgba(11,11,12,.86);backdrop-filter:blur(12px);border-bottom:1px solid #1e1e21}
nav .wrap{display:flex;align-items:center;height:72px;gap:28px}
.logo{flex-shrink:0;display:flex;align-items:center}
.logo img{height:46px;width:auto}
.menu{display:flex;gap:30px;flex:1;justify-content:center;font-size:15px}
.menu a{position:relative;padding:6px 0;color:#d8d3c9}
.menu a:hover,.menu a.on{color:var(--gold)}
.menu a.on::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--gold)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-tel{font-size:14px;color:var(--muted)}
.nav-tel b{color:var(--txt);font-weight:600}
.mbtn{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.mbtn span{width:24px;height:2px;background:var(--txt)}

.hero{position:relative;min-height:86vh;display:flex;align-items:center;overflow:hidden;padding:0}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,8,9,.92) 22%,rgba(8,8,9,.55) 55%,rgba(8,8,9,.25) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%}
.hero-box{max-width:640px}
.hero-tag{display:inline-block;padding:6px 14px;border:1px solid rgba(245,179,1,.5);color:var(--gold);font-size:13px;border-radius:30px;margin-bottom:22px;letter-spacing:.05em}
.hero h1{font-size:clamp(34px,5.2vw,60px);font-weight:800;line-height:1.18;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p{color:#cfc9be;font-size:clamp(15px,1.6vw,18px);margin:20px 0 32px;max-width:520px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:52px;flex-wrap:wrap}
.hero-stats .s b{display:block;font-size:32px;font-weight:800;color:var(--gold)}
.hero-stats .s span{font-size:13px;color:var(--muted)}

.trust{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:0}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.trust .t{padding:26px 16px;text-align:center;border-right:1px solid var(--line)}
.trust .t:last-child{border-right:none}
.trust .t b{display:block;font-size:24px;font-weight:700;color:var(--gold)}
.trust .t span{font-size:13px;color:var(--muted)}

.products{background:var(--bg)}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:48px}
.prod{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.3s;position:relative}
.prod:hover{transform:translateY(-8px);border-color:var(--gold);box-shadow:0 20px 40px rgba(0,0,0,.5)}
.prod .ph{aspect-ratio:4/3;overflow:hidden;background:#222}
.prod .ph img{width:100%;height:100%;object-fit:cover;transition:.6s}
.prod:hover .ph img{transform:scale(1.06)}
.prod .body{padding:22px}
.prod .en{font-size:12px;color:var(--gold);letter-spacing:.15em;text-transform:uppercase}
.prod h3{font-size:20px;margin:6px 0 10px}
.prod p{font-size:14px;color:var(--muted)}
.prod .tag{display:inline-block;margin-top:14px;font-size:12px;color:var(--dim);border:1px solid var(--line);padding:3px 10px;border-radius:20px}

.scenes{background:var(--bg2)}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:48px}
.scene{padding:30px 24px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,#18181a,#141416);transition:.3s}
.scene:hover{border-color:var(--gold)}
.scene .ic{width:52px;height:52px;border-radius:12px;background:#202023;display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:24px}
.scene h3{font-size:18px;margin-bottom:10px}
.scene p{font-size:14px;color:var(--muted)}

.data{background:var(--bg)}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:48px}
.dnum{text-align:center;padding:40px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.dnum b{font-size:46px;font-weight:800;color:var(--gold);line-height:1}
.dnum .unit{font-size:20px;color:var(--gold)}
.dnum p{margin-top:12px;color:var(--muted);font-size:14px}

.story{background:var(--bg2)}
.story .grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-top:20px}
.story-media{border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.story-media img{width:100%;height:100%;object-fit:cover}
.story ul{list-style:none;margin-top:24px;display:grid;gap:14px}
.story li{display:flex;gap:12px;font-size:15px;color:#cfc9be}
.story li::before{content:"✓";color:var(--gold);font-weight:700}

.cases{background:var(--bg)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px}
.case{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.3s}
.case:hover{transform:translateY(-6px);border-color:var(--gold)}
.case .ch{aspect-ratio:4/3;overflow:hidden}
.case .ch img{width:100%;height:100%;object-fit:cover;transition:.6s}
.case:hover .ch img{transform:scale(1.06)}
.case .cb{padding:20px}
.case h3{font-size:16px;line-height:1.5;margin-bottom:8px}
.case p{font-size:13px;color:var(--muted)}
.case .tag{display:inline-block;margin-top:10px;font-size:12px;color:var(--gold);border:1px solid rgba(245,179,1,.4);padding:2px 10px;border-radius:20px}

.guarantee{background:var(--bg2)}
.g-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px}
.g-item{display:flex;gap:16px;padding:26px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.g-item .gi{flex-shrink:0;width:46px;height:46px;border-radius:50%;background:#202023;display:flex;align-items:center;justify-content:center;color:var(--gold);font-size:20px}
.g-item h3{font-size:16px;margin-bottom:6px}
.g-item p{font-size:13px;color:var(--muted)}

.contact{background:var(--bg)}
.contact .grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:48px;align-items:start}
.c-info{display:grid;gap:18px}
.c-row{display:flex;gap:14px;align-items:flex-start}
.c-row .ci{width:42px;height:42px;flex-shrink:0;border-radius:10px;background:#202023;display:flex;align-items:center;justify-content:center;color:var(--gold);font-size:18px}
.c-row b{display:block;font-size:15px;margin-bottom:2px}
.c-row span{color:var(--muted);font-size:14px}
.qr{margin-top:6px;display:flex;gap:16px;align-items:center}
.qr img{width:120px;height:120px;border-radius:10px;border:1px solid var(--line)}
.c-form{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:32px}
.c-form h3{font-size:20px;margin-bottom:20px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f-field{margin-bottom:16px}
.f-field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.f-field input,.f-field textarea{width:100%;background:#121214;border:1px solid var(--line);border-radius:8px;padding:12px 14px;color:var(--txt);font-size:15px;font-family:inherit;transition:.2s}
.f-field input:focus,.f-field textarea:focus{outline:none;border-color:var(--gold)}
.f-field textarea{resize:vertical;min-height:100px}
.form-ok{display:none;margin-top:14px;padding:12px;background:rgba(245,179,1,.1);border:1px solid var(--gold);border-radius:8px;color:var(--gold);font-size:14px}

footer{background:#000;border-top:1px solid #1e1e21;padding:60px 0 0}
.f-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:40px}
.f-col .logo{margin-bottom:16px}
.f-col p{font-size:13px;color:var(--dim);max-width:300px}
.f-col h4{font-size:15px;margin-bottom:16px;color:var(--txt)}
.f-col a{display:block;font-size:13px;color:var(--muted);padding:5px 0}
.f-col a:hover{color:var(--gold)}
.copyright{border-top:1px solid #1e1e21;padding:20px 0;font-size:12px;color:var(--dim)}
.copyright .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.copyright a{color:var(--dim)}
.copyright a:hover{color:var(--gold)}

/* 内页通用：页头横幅 + 面包屑 */
.page-header{position:relative;padding:96px 0 64px;text-align:center;background:#0e0e10;border-bottom:1px solid var(--line);overflow:hidden}
.page-header::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% -50%,rgba(245,179,1,.12),transparent 70%)}
.page-header .wrap{position:relative;z-index:2}
.page-header h1{font-size:clamp(28px,4vw,44px);font-weight:800}
.page-header .sub{margin-top:12px;color:var(--muted);font-size:15px}
.breadcrumb{margin-top:14px;font-size:13px;color:var(--dim)}
.breadcrumb a{color:var(--dim)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb span{color:var(--gold)}

/* 产品详情（产品页） */
.prod-detail{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:72px 0;border-bottom:1px solid var(--line)}
.prod-detail:last-child{border-bottom:none}
.prod-detail.rev{grid-template-columns:1fr 1fr}
.prod-detail .media{border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.prod-detail .media img{width:100%;height:100%;object-fit:cover}
.prod-detail .en{font-size:12px;color:var(--gold);letter-spacing:.2em;text-transform:uppercase}
.prod-detail h2{font-size:clamp(24px,3vw,34px);font-weight:800;margin:8px 0 16px}
.prod-detail p{color:var(--muted);font-size:15px}
.specs{margin-top:22px;display:grid;gap:12px}
.spec{display:flex;justify-content:space-between;padding:12px 16px;background:var(--card);border:1px solid var(--line);border-radius:8px;font-size:14px}
.spec span{color:var(--muted)}
.spec b{color:var(--gold)}

/* 关于页 */
.about-blocks{display:grid;gap:28px;margin-top:48px}
.about-item{display:flex;gap:22px;padding:30px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.about-item .ai{flex-shrink:0;width:52px;height:52px;border-radius:12px;background:#202023;display:flex;align-items:center;justify-content:center;color:var(--gold);font-size:24px}
.about-item h3{font-size:19px;margin-bottom:10px}
.about-item p{color:var(--muted);font-size:14px}

@media(max-width:960px){
  .menu{display:none;position:absolute;top:72px;left:0;right:0;background:#0b0b0c;flex-direction:column;padding:20px 24px;gap:0;border-bottom:1px solid var(--line)}
  .menu.open{display:flex}
  .menu a{padding:14px 0;border-bottom:1px solid var(--line)}
  .mbtn{display:flex}
  .nav-tel{display:none}
  .grid4,.scene-grid,.data-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .trust .wrap{grid-template-columns:repeat(2,1fr)}
  .trust .t:nth-child(2){border-right:none}
  .trust .t{border-bottom:1px solid var(--line)}
  .story .grid,.contact .grid,.prod-detail{grid-template-columns:1fr}
  .g-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .grid4,.scene-grid,.data-grid,.case-grid{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .f-row{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr}
}