:root{
  --bg:#0a0c14;
  --bg-2:#0e111c;
  --surface:#141826;
  --surface-2:#1b2032;
  --line:rgba(212,175,95,.22);
  --text:#f3f1ea;
  --muted:#b3b8c6;
  --brand:#d4af5f;        /* 金 */
  --brand-2:#e8c97a;      /* 浅金 */
  --brand-3:#2f6bff;      /* 蓝（呼应 logo 蓝字）*/
  --glow:rgba(212,175,95,.4);
  --radius:16px;
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(var(--maxw),92vw);margin:0 auto}

/* ===== background grid / glow ===== */
.bg-fx{position:fixed;inset:0;z-index:-1;overflow:hidden}
.bg-fx::before{
  content:"";position:absolute;inset:-20%;
  background:
    radial-gradient(60% 50% at 15% 10%,rgba(212,175,95,.22),transparent 60%),
    radial-gradient(50% 50% at 85% 20%,rgba(212,175,95,.2),transparent 60%),
    radial-gradient(60% 60% at 50% 100%,rgba(25,211,218,.18),transparent 60%);
  filter:blur(20px);
}
.bg-fx::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 30%,#000,transparent 80%);
  opacity:.5;
}

/* ===== header ===== */
header.site{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);
  background:linear-gradient(180deg,rgba(7,13,31,.92),rgba(7,13,31,.55));
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.5px}
.brand img{height:40px;width:auto;border-radius:10px;background:#fff;padding:2px}
.brand .name{font-size:18px}
.brand .name small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:2px}
.menu{display:flex;gap:6px;align-items:center}
.menu a{
  padding:8px 14px;border-radius:10px;color:var(--muted);font-size:15px;font-weight:600;
  transition:.2s;
}
.menu a:hover,.menu a.active{color:#fff;background:rgba(212,175,95,.14)}
.btn{
  display:inline-block;padding:11px 22px;border-radius:12px;font-weight:700;font-size:15px;
  background:linear-gradient(135deg,var(--brand),var(--brand-3));
  color:#fff;box-shadow:0 8px 30px var(--glow);transition:.2s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 38px var(--glow)}
.btn.ghost{background:transparent;border:1px solid var(--line);box-shadow:none;color:var(--text)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px}

/* ===== hero / banner ===== */
.hero{position:relative;padding:70px 0 40px}
.banner{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);
  background:var(--surface);min-height:460px}
.slides{position:relative;height:460px}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s;display:flex;align-items:center;
  background-size:cover;background-position:center}
.slide.active{opacity:1}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,13,31,.9),rgba(7,13,31,.35))}
.slide .copy{position:relative;z-index:2;padding:0 6%;max-width:680px}
.slide .tag{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--brand-2);
  border:1px solid var(--line);padding:5px 12px;border-radius:999px;margin-bottom:18px}
.slide h1{font-size:clamp(28px,4.4vw,52px);line-height:1.18;margin-bottom:16px;
  background:linear-gradient(120deg,#fff,#bcd0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.slide p{color:var(--muted);font-size:17px;margin-bottom:26px}
.dots{position:absolute;bottom:20px;left:6%;z-index:3;display:flex;gap:10px}
.dots button{width:30px;height:5px;border-radius:5px;border:0;background:rgba(255,255,255,.25);cursor:pointer}
.dots button.on{background:var(--brand)}

/* ===== sections ===== */
section.block{padding:72px 0}
.sec-head{text-align:center;margin-bottom:46px}
.sec-head .ey{color:var(--brand-2);letter-spacing:3px;font-size:13px;font-weight:700}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);margin:10px 0 8px}
.sec-head p{color:var(--muted);max-width:680px;margin:0 auto}
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:linear-gradient(180deg,var(--surface),var(--surface-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;
  position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);border-color:rgba(212,175,95,.45);box-shadow:0 18px 50px rgba(0,0,0,.45)}
.card .ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:26px;
  background:linear-gradient(135deg,rgba(212,175,95,.22),rgba(184,144,47,.18));margin-bottom:16px}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .k{position:absolute;top:-20px;right:-10px;font-size:90px;font-weight:900;color:rgba(255,255,255,.04)}

/* ===== feature row ===== */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.feature .ph{aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--surface)}
.feature .ph img{width:100%;height:100%;object-fit:cover}
.feature h3{font-size:26px;margin-bottom:14px}
.feature p{color:var(--muted);margin-bottom:14px}
.ul{list-style:none;display:grid;gap:10px}
.ul li{display:flex;gap:10px;align-items:flex-start;color:var(--muted)}
.ul li::before{content:"▹";color:var(--brand-2);font-weight:900}

/* ===== stats ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;text-align:center}
.stat b{font-size:40px;background:linear-gradient(120deg,var(--brand-2),var(--brand));
  -webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.stat span{color:var(--muted);font-size:14px}

/* ===== news ===== */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news .item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.news .item:hover{transform:translateY(-5px);border-color:rgba(212,175,95,.45)}
.news .item .th{aspect-ratio:16/10;overflow:hidden}
.news .item .th img{width:100%;height:100%;object-fit:cover}
.news .item .bd{padding:18px}
.news .item .bd .d{font-size:12px;color:var(--brand-2);letter-spacing:1px}
.news .item .bd h4{font-size:17px;margin:6px 0}
.news .item .bd p{color:var(--muted);font-size:14px}

/* ===== cta ===== */
.cta{text-align:center;border:1px solid var(--line);border-radius:24px;padding:54px 20px;
  background:linear-gradient(135deg,rgba(212,175,95,.12),rgba(184,144,47,.1))}
.cta h2{font-size:32px;margin-bottom:12px}
.cta p{color:var(--muted);margin-bottom:24px}

/* ===== contact ===== */
.contact{display:grid;grid-template-columns:1.1fr .9fr;gap:40px}
.contact .info .row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact .info .row .ico{font-size:22px}
.contact .info .row b{display:block;color:#fff;font-size:15px}
.contact .info .row span{color:var(--muted);font-size:14px}
.form input,.form textarea{width:100%;background:var(--surface);border:1px solid var(--line);
  color:var(--text);border-radius:12px;padding:13px 15px;margin-bottom:14px;font-size:15px;font-family:inherit}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--brand)}
.form textarea{resize:vertical;min-height:110px}

/* ===== footer ===== */
footer.site{border-top:1px solid var(--line);padding:40px 0;background:var(--bg-2)}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:center}
.foot .l{color:var(--muted);font-size:14px}
.foot .social{display:flex;gap:12px}
.foot .social a{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--muted);transition:.2s}
.foot .social a:hover{color:#fff;border-color:var(--brand);background:rgba(212,175,95,.15)}

/* ===== inner page hero ===== */
.page-hero{padding:60px 0 30px;text-align:center}
.page-hero h1{font-size:clamp(30px,4vw,46px);margin-bottom:10px;
  background:linear-gradient(120deg,#fff,#bcd0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{color:var(--muted);max-width:680px;margin:0 auto}
.breadcrumb{color:var(--muted);font-size:13px;margin-bottom:14px}
.breadcrumb a:hover{color:#fff}

/* ===== timeline ===== */
.timeline{position:relative;margin-top:20px;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--brand-2),var(--brand))}
.tl{position:relative;margin-bottom:26px}
.tl::before{content:"";position:absolute;left:-23px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--brand-2);box-shadow:0 0 0 4px rgba(25,211,218,.18)}
.tl b{color:#fff}.tl span{color:var(--muted);font-size:14px;display:block}

/* ===== reveal anim ===== */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== responsive ===== */
@media(max-width:980px){
  .g3,.g4,.news{grid-template-columns:repeat(2,1fr)}
  .feature,.contact{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .menu{position:fixed;inset:70px 0 auto 0;flex-direction:column;gap:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);padding:10px 0;
    transform:translateY(-130%);transition:.3s}
  .menu.open{transform:none}
  .menu a{width:100%;text-align:center;padding:14px}
  .burger{display:flex}
  .g2,.g3,.g4,.news,.stats{grid-template-columns:1fr}
  .slide .copy{padding:0 8%}
}