/* zjd.cn 国内官网 - 对标 z.zjd.cn 风格 */
:root {
  --g900: #0c2e1f; --g800: #1a4731; --g700: #1b5e3f; --g600: #2d6a4f;
  --g500: #40916c; --g400: #52b788; --g300: #74c69d; --g200: #95d5b2;
  --g100: #d8f3dc; --g50: #f0fdf4;
  --gold: #D4AF37; --gold-l: #e8c94d;
  --c50: #fafafa; --c100: #f4f4f5; --c200: #e4e4e7; --c300: #d4d4d8;
  --c400: #a1a1aa; --c500: #71717a; --c600: #52525b; --c700: #3f3f46;
  --c800: #27272a; --c900: #18181b;
  --r: 16px; --r-sm: 10px; --r-lg: 24px;
  --sh: 0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06);
  --sh-md: 0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);
  --sh-lg: 0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);
  --sh-xl: 0 20px 25px -5px rgba(0,0,0,.08),0 8px 10px -6px rgba(0,0,0,.04);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--c800);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.gold{color:var(--gold)}

/* Nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.8);backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid rgba(0,0,0,.05);transition:.3s}
.nav.scrolled{background:rgba(255,255,255,.95);box-shadow:var(--sh-md)}
.nav-row{display:flex;align-items:center;justify-content:space-between;height:72px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:900;letter-spacing:-.5px;color:var(--c900)}
.nav-logo-img{width:36px;height:36px;border-radius:8px}
.nav-tag{font-size:11px;background:var(--g800);color:#fff;padding:3px 10px;border-radius:100px;font-weight:600}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-links a{font-size:13px;font-weight:500;color:var(--c500);transition:.2s}
.nav-links a:hover{color:var(--g800)}
.nav-btns{display:flex;align-items:center;gap:12px}
.btn-login{font-size:14px;font-weight:500;color:var(--c600)}.btn-login:hover{color:var(--g800)}
.btn-reg{padding:10px 22px;background:var(--g800);color:#fff;border-radius:var(--r-sm);font-size:13px;font-weight:600;transition:.2s}
.btn-reg:hover{background:var(--g700);transform:translateY(-1px);box-shadow:var(--sh-md)}
.nav-burger{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-burger span{display:block;width:20px;height:2px;background:var(--c700);margin:5px 0;border-radius:1px}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:72px;overflow:hidden;background:var(--g900)}
.hero-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:60px 60px}
.hero-bg::before{content:'';position:absolute;width:600px;height:600px;top:-200px;right:-100px;background:var(--g600);border-radius:50%;filter:blur(80px);opacity:.4}
.hero-bg::after{content:'';position:absolute;width:400px;height:400px;bottom:-100px;left:-100px;background:var(--g700);border-radius:50%;filter:blur(80px);opacity:.3}
.hero-inner{text-align:center;padding:80px 0 60px;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;border-radius:100px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);color:var(--g200);font-size:13px;font-weight:500;margin-bottom:32px}
.hero h1{font-size:clamp(2.8rem,6vw,4.5rem);font-weight:900;line-height:1.15;color:#fff;margin-bottom:24px;letter-spacing:-1px}
.hero-accent{background:linear-gradient(135deg,var(--g300),var(--gold-l));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:18px;color:rgba(255,255,255,.5);max-width:560px;margin:0 auto 40px;line-height:1.8}
.hero-desc b{color:rgba(255,255,255,.8);font-weight:700}
.hero-btns{display:flex;gap:16px;justify-content:center;margin-bottom:64px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;border-radius:var(--r-sm);font-size:15px;font-weight:600;cursor:pointer;transition:.2s;border:2px solid transparent}
.btn-big{padding:18px 40px;font-size:16px;border-radius:var(--r)}
.btn-main{background:#fff;color:var(--g900)}.btn-main:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,.2)}
.btn-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.2)}.btn-outline:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.3)}
.btn-white{background:#fff;color:var(--g900)}.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,.15)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6)}

/* Hero Cards */
.hero-cards{display:inline-flex;align-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-lg);padding:24px 48px;backdrop-filter:blur(10px)}
.hero-card{text-align:center;padding:0 32px}
.hero-card+.hero-card{border-left:1px solid rgba(255,255,255,.1)}
.hc-num{font-size:32px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums}
.hc-label{font-size:13px;color:rgba(255,255,255,.4);margin-top:4px}

/* Sections */
.sec{padding:120px 0}.sec-gray{background:var(--c50)}
.sec-head{text-align:center;margin-bottom:64px}
.sec-tag{display:inline-block;padding:6px 16px;border-radius:100px;background:var(--g50);color:var(--g800);font-size:12px;font-weight:700;letter-spacing:1.5px;margin-bottom:20px;text-transform:uppercase}
.sec-head h2{font-size:clamp(2rem,4vw,2.8rem);font-weight:800;margin-bottom:16px;letter-spacing:-.5px}
.sec-head p{font-size:16px;color:var(--c500);max-width:520px;margin:0 auto}

/* Features */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feat-card{display:block;padding:40px;border-radius:var(--r);background:#fff;border:1px solid var(--c200);transition:.3s;position:relative;overflow:hidden}
.feat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--g500),var(--g300));opacity:0;transition:.3s}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-xl);border-color:var(--g200)}
.feat-card:hover::before{opacity:1}
.feat-icon{font-size:36px;margin-bottom:20px}
.feat-card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.feat-card p{font-size:14px;color:var(--c500);line-height:1.7;margin-bottom:20px}
.feat-link{font-size:14px;font-weight:600;color:var(--g700)}

/* Products */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod-card{display:block;padding:36px;border-radius:var(--r);background:#fff;border:1px solid var(--c200);text-align:center;transition:.3s}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--g200)}
.prod-icon{font-size:40px;margin-bottom:16px}
.prod-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.prod-card p{font-size:13px;color:var(--c500)}

/* Advantages */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.adv-card{text-align:center;padding:40px 28px;border-radius:var(--r);background:#fff;border:1px solid var(--c200);transition:.3s}
.adv-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.adv-icon{font-size:40px;margin-bottom:20px}
.adv-card h4{font-size:17px;font-weight:700;margin-bottom:10px}
.adv-card p{font-size:13px;color:var(--c500);line-height:1.7}

/* About */
.about-row{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.about-text .sec-tag{margin-bottom:16px}
.about-text h2{font-size:2.2rem;font-weight:800;margin:16px 0 24px;letter-spacing:-.5px}
.about-text p{font-size:15px;color:var(--c600);line-height:1.8;margin-bottom:16px}
.about-mission{color:var(--g800)!important;font-size:16px!important;margin-top:24px!important}
.about-info{margin-top:32px;display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--c500)}
.about-info a{color:var(--g700);font-weight:600}
.about-nums{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.an-card{padding:32px;border-radius:var(--r);text-align:center;background:var(--g50);border:1px solid var(--g100);transition:.3s}
.an-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.an-num{font-size:36px;font-weight:900;color:var(--g800);letter-spacing:-1px}
.an-label{font-size:13px;color:var(--c500);margin-top:6px}

/* CTA */
.cta{padding:120px 0;text-align:center;background:linear-gradient(135deg,var(--g800),var(--g600));color:#fff;position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:40px 40px}
.cta-inner{position:relative}
.cta h2{font-size:2.4rem;font-weight:800;margin-bottom:16px}
.cta p{font-size:16px;opacity:.6;margin-bottom:40px}
.cta-btns{display:flex;gap:16px;justify-content:center}

/* Footer */
.footer{padding:80px 0 32px;background:var(--c900);color:rgba(255,255,255,.6)}
.ft-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.ft-logo{width:36px;height:36px;border-radius:8px;margin-bottom:16px}
.ft-brand p{font-size:14px;margin-bottom:4px}
.ft-co{font-size:12px;color:rgba(255,255,255,.3)}
.ft-links h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:20px}
.ft-links a{display:block;font-size:13px;margin-bottom:12px;transition:.2s}
.ft-links a:hover{color:var(--g400)}
.ft-bottom{border-top:1px solid rgba(255,255,255,.06);padding-top:24px;text-align:center;font-size:12px;color:rgba(255,255,255,.3)}
.ft-bottom a{color:rgba(255,255,255,.4)}.ft-bottom a:hover{color:var(--g400)}
.ft-disclaimer{font-size:10px;margin-top:12px;line-height:1.6;max-width:800px;margin-left:auto;margin-right:auto}

/* Responsive */
@media(max-width:768px){
  .nav-links,.nav-btns{display:none}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);padding:24px;gap:16px;box-shadow:var(--sh-lg);border-bottom:1px solid var(--c200)}
  .nav-burger{display:block}
  .hero h1{font-size:2.2rem}
  .hero-desc{font-size:15px}
  .hero-cards{flex-direction:column;padding:24px 32px;gap:0}
  .hero-card{padding:12px 0}
  .hero-card+.hero-card{border-left:none;border-top:1px solid rgba(255,255,255,.1)}
  .hero-btns,.cta-btns{flex-direction:column;align-items:center}
  .feat-grid,.prod-grid,.adv-grid,.about-row{grid-template-columns:1fr}
  .about-nums{grid-template-columns:1fr 1fr}
  .ft-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sec{padding:80px 0}.cta{padding:80px 0}
}