:root{
  --bg-0:#f3f0e7;
  --bg-1:#faf8f2;
  --bg-2:#fffdf9;
  --bg-3:#ede9dd;
  --ink:#262a22;
  --ink-2:#565b50;
  --ink-3:#94988c;
  --gold:#a8802e;
  --gold-2:#c29b45;
  --gold-deep:#7a5a17;
  --line:rgba(168,128,46,.16);
  --line-2:rgba(168,128,46,.32);
  --radius:18px;
  --serif:'Noto Serif SC','Songti SC','STSong',Georgia,serif;
  --sans:'Noto Sans SC','Microsoft YaHei','PingFang SC',system-ui,sans-serif;
  --shadow:0 24px 60px rgba(0,0,0,.4);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{background:var(--bg-0);color:var(--ink);font-family:var(--sans);font-weight:300;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.services>.wrap{padding-top:120px;padding-bottom:60px}
.product>.wrap{padding-top:60px;padding-bottom:60px}
.tech>.wrap{padding-top:30px;padding-bottom:60px}
.contact>.wrap{padding-top:30px;padding-bottom:120px}
section{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:12px;letter-spacing:.35em;color:var(--gold);font-weight:500;text-transform:uppercase}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--gold-deep)}
.sec-head{margin-bottom:56px}
.tech .proj-grid{margin-top:40px}
.sec-head h2{font-family:var(--serif);font-weight:700;font-size:clamp(30px,4.4vw,46px);line-height:1.25;letter-spacing:.02em}
.sec-head .sub{margin-top:16px;max-width:640px;color:var(--ink-2);font-size:clamp(14px,1.4vw,17px)}

/* ---------- 导航 ---------- */
html{scroll-padding-top:84px}
.nav{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .35s,border-color .35s,backdrop-filter .35s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(250,248,242,.86);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(90,75,30,.06)}
.nav-in{max-width:1200px;margin:0 auto;padding:0 24px;height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(145deg,#f1ebdc,#fffdf9);border:1px solid var(--line-2);display:grid;place-items:center;flex:none}
.brand-mark svg{width:35px;height:35px}
.brand-name{display:flex;flex-direction:column;line-height:1.15}
.brand-name strong{font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:.04em}
.brand-name span{font-size:10px;letter-spacing:.3em;color:var(--ink-3)}
.nav .brand-name span{color:var(--gold)}
.nav-drawer{display:flex;align-items:center;gap:6px}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0}
.nav-links a{padding:10px 14px;font-size:14px;color:var(--ink-2);border-radius:8px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--ink);background:rgba(212,175,106,.08)}
.nav-cta{margin-left:8px;padding:10px 20px;border:1px solid var(--line-2);border-radius:999px;color:var(--gold);font-size:14px;transition:background .25s,color .25s;white-space:nowrap}
.nav-cta:hover{background:var(--gold);color:#0e1319}
.nav-burger{display:none;width:44px;height:44px;background:none;border:none;cursor:pointer;position:relative;z-index:61}
.nav-burger span{position:absolute;left:10px;right:10px;height:2px;background:var(--ink);transition:.3s}
.nav-burger span:nth-child(1){top:14px}
.nav-burger span:nth-child(2){top:21px}
.nav-burger span:nth-child(3){top:28px}
.nav.open .nav-burger span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav.open .nav-burger span:nth-child(2){opacity:0}
.nav.open .nav-burger span:nth-child(3){top:21px;transform:rotate(-45deg)}
@media(max-width:960px){
  .nav-drawer{display:none;position:fixed;top:74px;right:0;flex-direction:column;align-items:stretch;background:rgba(250,248,242,.98);width:min(70vw,200px);padding:18px;border-left:1px solid var(--line);gap:2px}
  .nav.open .nav-drawer{display:flex;animation:navSlide .32s ease}
  .nav-links a{padding:14px 16px;font-size:16px}
  .nav-cta{margin:14px 0 0;text-align:center}
  .nav-burger{display:block}
}
@keyframes navSlide{from{transform:translateX(100%)}to{transform:translateX(0)}}

/* ---------- Hero ---------- */
.hero{min-height:100svh;display:flex;align-items:center;overflow:hidden;background:linear-gradient(180deg,#f5f1e8,#faf8f2 40%,#f2eee4)}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 75% 60% at 50% 16%,rgba(168,128,46,.16),transparent 62%),radial-gradient(ellipse 50% 40% at 86% 82%,rgba(168,128,46,.08),transparent 66%);pointer-events:none}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(168,128,46,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(168,128,46,.07) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 90% 70% at 50% 40%,#000 30%,transparent 78%);pointer-events:none}
.hero-glow{position:absolute;top:26%;left:50%;transform:translate(-50%,-50%);width:820px;height:820px;background:radial-gradient(circle,rgba(168,128,46,.14),transparent 60%);pointer-events:none}
.hero-in{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:120px 24px 110px;text-align:center}
.hero .eyebrow{justify-content:center}
.hero .eyebrow::after{content:"";width:34px;height:1px;background:var(--gold-deep)}
.hero-title{margin:34px auto 0;font-family:var(--serif);font-weight:900;font-size:clamp(38px,6.4vw,74px);line-height:1.14;letter-spacing:.03em;max-width:1000px}
.hero-title .hl{font-style:normal;color:var(--gold);background:linear-gradient(120deg,var(--gold-2),var(--gold) 45%,var(--gold-deep));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-lead{margin:30px auto 0;max-width:720px;color:var(--ink-2);font-size:clamp(15px,1.8vw,19px);line-height:1.9}
.hero-cta{margin-top:44px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 32px;border-radius:999px;font-size:15px;font-weight:500;transition:.3s;cursor:pointer;border:1px solid transparent}
.btn svg{width:16px;height:16px;transition:transform .3s}
.btn:hover svg{transform:translateX(3px)}
.btn-gold{background:linear-gradient(135deg,var(--gold-2),var(--gold) 55%,#b8914f);color:#14100a;box-shadow:0 12px 34px rgba(212,175,106,.25)}
.btn-gold:hover{box-shadow:0 16px 44px rgba(212,175,106,.4);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{background:rgba(212,175,106,.08);border-color:var(--gold-deep)}
.hero-stats{margin:56px auto 0;display:flex;justify-content:center;gap:0;border-top:1px solid var(--line);padding-top:38px;flex-wrap:wrap}
.stat{text-align:center;padding:0 38px;position:relative}
.stat + .stat::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--line)}
.stat strong{font-family:var(--serif);font-weight:700;font-size:clamp(30px,3.4vw,44px);color:var(--gold)}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3);letter-spacing:.12em}
@media(max-width:640px){.stat{padding:0 22px}.stat+.stat::before{left:0}}

/* ---------- 通用卡片与滚动揭示 ---------- */
.card{background:linear-gradient(160deg,var(--bg-2),var(--bg-1));border:1px solid var(--line);border-radius:var(--radius);padding:30px;opacity:0;transform:translateY(26px);transition:transform .35s,border-color .35s,box-shadow .35s}
.card.in{opacity:1;transform:none}
.card:hover,.card.in:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:var(--shadow)}
.rv{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}

/* ---------- CTA ---------- */
.cta-band{position:relative;border-radius:24px;padding:72px 48px;text-align:center;overflow:hidden;background:url('hero.jpg') center/cover no-repeat;border:1px solid var(--line-2)}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,15,20,.82),rgba(12,15,20,.66));pointer-events:none}
.cta-glow{position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:640px;height:640px;background:radial-gradient(circle,rgba(212,175,106,.22),transparent 62%);pointer-events:none}
.cta-in{position:relative;z-index:1}
.cta-in h2{font-family:var(--serif);font-weight:700;font-size:clamp(26px,3.6vw,40px);line-height:1.3;color:#f4efe3}
.cta-in p{margin:18px auto 0;max-width:620px;color:rgba(239,236,225,.8);font-size:15px;line-height:1.9}
.cta-band .btn-ghost{color:#f4efe3;border-color:rgba(212,175,106,.45)}
.cta-band .btn-ghost:hover{background:rgba(212,175,106,.14);border-color:rgba(212,175,106,.7)}
.cta-actions{margin-top:34px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
@media(max-width:560px){.cta-band{padding:56px 24px}}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);background:linear-gradient(180deg,var(--bg-1),var(--bg-0))}
.foot-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding:70px 0 50px}
.foot-brand p{margin-top:18px;max-width:340px;color:var(--ink-2);font-size:14px;line-height:1.85}
.foot-social{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;position:relative}
.foot-social .social{width:36px;height:36px;border-radius:10px;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--gold);transition:background .3s,color .3s,border-color .3s}
.foot-social .social svg{width:18px;height:18px}
.foot-social .social:hover{background:var(--gold);color:#fff;border-color:var(--gold)}
.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%);background:rgba(38,42,34,.92);color:#fff;padding:11px 22px;border-radius:999px;font-size:14px;z-index:999;box-shadow:0 12px 32px rgba(0,0,0,.25);max-width:88vw;text-align:center}
.foot-col h4{font-family:var(--serif);font-weight:700;font-size:15px;letter-spacing:.06em;margin-bottom:16px;color:var(--ink)}
.foot-col a{display:block;padding:6px 0;color:var(--ink-2);font-size:14px;transition:color .2s}
.foot-col a:hover{color:var(--gold)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:22px 0;border-top:1px solid var(--line);color:var(--ink-3);font-size:13px}
.foot-bottom a{color:inherit;transition:color .2s}
.foot-bottom a:hover{color:var(--gold)}
.qr-pop{position:fixed;z-index:300;width:152px;background:var(--bg-2);border:1px solid var(--line-2);border-radius:12px;box-shadow:0 12px 32px rgba(38,42,34,.18);padding:8px;text-align:center;pointer-events:none}
.qr-pop[hidden]{display:none}
.qr-pop img{width:132px;height:132px;object-fit:contain;border-radius:6px;display:block;margin:0 auto}
.qr-pop span{display:block;margin-top:6px;font-size:12px;color:var(--ink-2);letter-spacing:.04em}
@media(max-width:900px){.foot-top{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.foot-top{grid-template-columns:repeat(3,1fr);gap:22px 10px}.foot-brand{grid-column:1/-1}.foot-col h4{font-size:14px;margin-bottom:12px}.foot-col a{font-size:12px;line-height:1.5;padding:4px 0}}

/* ---------- 赋能服务 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.svc{display:flex;flex-direction:column;gap:14px;position:relative}
.svc-head{display:flex;align-items:center;gap:14px}
.svc-head h3{line-height:1.3}
.svc-txt{display:flex;flex-direction:column;gap:6px;flex:1;min-width:0}
.svc-ic{flex:none;width:56px;height:56px;border-radius:16px;background:rgba(168,128,46,.10);border:1px solid var(--line-2);display:grid;place-items:center}
.svc-ic svg{width:28px;height:28px}
.svc-flag{font-size:12px;letter-spacing:.14em;color:var(--gold);border:1px solid var(--line);padding:5px 12px;border-radius:999px;white-space:nowrap;margin-left:auto}
.svc h3{font-family:var(--serif);font-weight:700;font-size:20px;line-height:1.3;margin:0}
.svc p{margin-top:8px;color:var(--ink-2);font-size:15px;line-height:1.9}
.svc-go{margin-top:auto;display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:14px;font-weight:500}
.svc-go svg{width:16px;height:16px;transition:transform .3s}
.svc:hover .svc-go svg{transform:translateX(4px)}
@media(max-width:820px){.svc-grid{grid-template-columns:1fr}}
/* ---------- 产品项目 ---------- */
.road-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.road-grid .card.road{display:flex;flex-direction:column}
.road-head{display:flex;align-items:center;gap:12px}
.road-head h3{flex:1;line-height:1.3}
.road h3{font-family:var(--serif);font-weight:700;font-size:18px;margin:0;display:flex;align-items:baseline;gap:8px}
.road h3 span{font-size:11px;font-weight:400;letter-spacing:.1em;color:var(--ink-3);font-family:ui-monospace,monospace}
.road p{margin-top:7px;font-size:13.5px;color:var(--ink-2);line-height:1.8}
.road-ic{flex:none;width:56px;height:56px;border-radius:16px;background:rgba(168,128,46,.10);border:1px solid var(--line-2);display:grid;place-items:center;color:var(--gold)}
.road-ic svg{width:28px;height:28px}
.road .soon{display:inline-block;margin-top:0;font-size:11px;letter-spacing:.12em;color:var(--gold-deep);border:1px dashed var(--line-2);padding:3px 10px;border-radius:999px}
.road .road-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px}
.road .road-foot .code{font-size:12px;letter-spacing:.1em;color:var(--ink-3);font-weight:600}
@media(max-width:960px){.road-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.road-grid{grid-template-columns:1fr}}
/* ---------- 技术支持项目 ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:14px}
.proj-head{display:flex;align-items:center;gap:14px}
.proj h3{font-family:var(--serif);font-weight:700;font-size:21px;display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:0}
.proj h3 span{font-size:11px;font-weight:400;letter-spacing:.1em;color:var(--ink-3);font-family:ui-monospace,monospace}
.proj p{margin-top:8px;color:var(--ink-2);font-size:15px;line-height:1.9}
.proj-ic{width:50px;height:50px;border-radius:12px;background:rgba(168,128,46,.09);border:1px solid var(--line-2);display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:20px;color:var(--gold)}
.proj-go{margin-top:14px;display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:14px;font-weight:500}
.proj-go svg{width:16px;height:16px;transition:transform .3s}
.proj:hover .proj-go svg{transform:translateX(4px)}
@media(max-width:820px){.proj-grid{grid-template-columns:1fr}}
/* ---------- 技术支持 ---------- */
.tech-band{display:flex;align-items:center;gap:26px;padding:40px 44px;border-radius:var(--radius);background:linear-gradient(150deg,#efe9db,#fbf9f3);border:1px solid var(--line-2);position:relative;overflow:hidden}
.tech-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(168,128,46,.10),transparent 40%);pointer-events:none}
.tech-action{flex:none;display:inline-flex;align-items:center;gap:8px;background:var(--gold);color:#fff;padding:13px 26px;border-radius:12px;font-weight:600;font-size:15px;margin-left:auto;transition:background .3s,transform .3s;position:relative}
.tech-action svg{width:18px;height:18px}
.tech-action:hover{background:var(--gold-deep);transform:translateY(-2px)}
.tech-ic{width:62px;height:62px;flex:none;border-radius:16px;background:rgba(168,128,46,.10);border:1px solid var(--line-2);display:grid;place-items:center}
.tech-ic svg{width:30px;height:30px}
.tech-body{flex:1;min-width:0;position:relative}
.tech-body h3{font-family:var(--serif);font-weight:700;font-size:24px}
.tech-body p{margin-top:8px;color:var(--ink-2);font-size:15px;line-height:1.85}
.tech-link{position:relative;white-space:nowrap}
.tech-link a{display:inline-flex;align-items:center;gap:8px;color:var(--gold);font-size:15px;font-weight:500;padding:12px 22px;border:1px solid var(--line-2);border-radius:999px;transition:.3s}
.tech-link a:hover{background:var(--gold);color:#fffdf9;border-color:var(--gold)}
@media(max-width:860px){.tech-band{flex-direction:column;align-items:flex-start;padding:32px 26px}.tech-action{margin-left:0}}

/* ===== 移动端精细优化 ===== */
@media(max-width:560px){
  .nav-in{padding:0 14px;gap:10px}
  .brand{min-width:0;flex:1}
  .brand-name{min-width:0}
  .brand-name strong{font-size:15px}
  .brand-name span{font-size:8px;letter-spacing:.08em;line-height:1.4;white-space:normal}
  .nav-burger{flex:none}
  .hero-in{padding:56px 18px 40px}
  .hero-glow,.cta-glow{display:none}
  .hero .eyebrow{font-size:11px}
  .hero-title{margin-top:18px;font-size:clamp(26px,7.6vw,34px);line-height:1.22}
  .hero-lead{margin-top:16px;font-size:14.5px;line-height:1.75}
  .hero-cta{margin-top:22px;flex-direction:column;align-items:stretch;width:100%}
  .hero-cta .btn{width:100%;justify-content:center;padding:14px 22px}
  .hero-stats{margin-top:26px;flex-direction:row;flex-wrap:nowrap;justify-content:center;align-items:flex-start;gap:0;padding-top:18px}
  .stat{flex:1 1 0;min-width:0;padding:0 6px;width:auto}
  .stat strong{font-size:clamp(22px,5.6vw,28px)}
  .stat span{font-size:11px;margin-top:4px}
  .stat+.stat::before{display:block}
  .wrap{padding-left:18px;padding-right:18px}
  .sec-head{margin-bottom:36px}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%}
  .cta-actions .btn{width:100%;justify-content:center}
}
@media(max-width:400px){
  .svc h3{font-size:18px}
  .svc-head{gap:10px}
  .hero-title{letter-spacing:0}
}

/* 移动端导航：<960px 使用右侧汉堡按钮 + 抽屉 */
@media(max-width:960px){
  .nav-in{height:74px}
  .nav-links{flex-direction:column}
  .nav-links a{font-size:16px;text-align:left}
  .nav.open .nav-drawer{display:flex}
}