:root{--bg:#0b0c10;--text:#101418;--muted:#5b6770;--primary:#2f7cff;--accent:#7a5cf7;--surface:#ffffff;--border:rgba(16,20,24,.08)}
*{box-sizing:border-box}
html,body{padding:0;margin:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,"Noto Sans","Microsoft Yahei",sans-serif;background:#f6f8fb;color:var(--text)}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.nav{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.6);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;text-decoration:none;color:var(--text)}
.brand-logo{height:40px;width:auto;border-radius:0;object-fit:contain;margin-right:12px}
.brand-name{font-weight:600;letter-spacing:.2px}
.menu{display:flex;gap:20px}
.menu-link{color:var(--muted);text-decoration:none;font-weight:500}
.menu-link:focus-visible,.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.menu-link:hover{color:var(--text)}
.pill-section{padding:24px 0}
.pill-strip{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.pill{display:inline-flex;align-items:center;padding:6px 12px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--muted);font-weight:600}
.guide{margin-top:12px;color:var(--muted);text-align:center}
.hero{position:relative;overflow:hidden}
.hero::before{content:none}
.hero-inner{display:flex;align-items:center;justify-content:center;min-height:64vh;padding:72px 0;position:relative;z-index:1}
.hero-text h1{font-size:clamp(32px,7vw,56px);line-height:1.1;margin:0 0 12px}
.hero-text p{color:var(--muted);font-size:18px;margin:0 0 24px}
.hero-actions{display:flex;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 18px;border-radius:12px;text-decoration:none;font-weight:600}
.btn.primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 8px 24px rgba(47,124,255,.24)}
.btn.primary:hover{transform:translateY(-1px)}
.btn.ghost{color:var(--text);background:#fff;border:1px solid var(--border)}
.btn.ghost:hover{background:#fafbfc}
.hero .hero-text h1{color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.hero .hero-text p{color:rgba(255,255,255,.86)}
.hero .btn.ghost{color:#fff;background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35)}
.hero .btn.ghost:hover{background:rgba(255,255,255,.24)}
.hero-bg{position:absolute;inset:-20% -10% auto -10%;height:60vh;background:radial-gradient(1200px 400px at 20% 20%,rgba(122,92,247,.25),transparent),radial-gradient(800px 300px at 80% 40%,rgba(47,124,255,.25),transparent)}
.section{padding:80px 0;scroll-margin-top:64px}
h2{font-size:28px;margin:0 0 12px}
.lead{color:var(--muted);margin:0 0 24px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(16,20,24,.08)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feature{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;min-height:140px;transition:transform .25s,box-shadow .25s}
.feature:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(16,20,24,.08)}
.feature h3{margin:4px 0 8px}
.feature p{margin:0;color:var(--muted)}
.products{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.product{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.product img{display:block;width:100%;height:180px;object-fit:cover;aspect-ratio:4/3;filter:saturate(1.08) contrast(1.12) brightness(1.05)}
.product h3{margin:16px}
.product p{margin:0 16px 20px;color:var(--muted)}
.product:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(16,20,24,.08)}
.placeholder{display:flex;flex-direction:column}
.placeholder-box{height:180px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eef3ff,#f7f5ff);color:var(--muted);font-weight:600}
.contact-box{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.contact-qr{display:flex;flex-direction:column;align-items:center;gap:12px;margin:12px 0 20px}
.contact-qr img{width:240px;max-width:70vw;height:auto;border-radius:12px;border:1px solid var(--border);background:#fff;box-shadow:0 10px 28px rgba(16,20,24,.08)}
.qr-note{color:var(--muted);font-size:14px;text-align:center}
.footer{border-top:1px solid var(--border);padding:24px 0;background:#fff}
.footer-inner{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}
.to-top{color:var(--muted);text-decoration:none}
.to-top:hover{color:var(--text)}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(max-width:1024px){.cards,.grid,.products{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){
  .nav-inner{height:56px}
  .menu{gap:12px}
  .hero-inner{min-height:64vh;padding:72px 0}
  .cards,.grid,.products{grid-template-columns:1fr}
  .product img,.placeholder-box{height:160px}
  .contact-panel{grid-template-columns:1fr;gap:20px}
  .contact-info .contact-box{justify-content:center}
  .contact-info{text-align:center}
  .section{padding:64px 0}
}
.hero-bg{filter:saturate(1.2) contrast(1.22) brightness(1.06)}
.hero-text{max-width:960px;margin:0 auto;text-align:center}
.hero-text h1{font-size:clamp(30px,6vw,54px);font-weight:800;line-height:1.1;margin:0 0 12px}
.hero-text p{color:var(--muted);font-size:clamp(16px,2.2vw,20px);line-height:1.6;letter-spacing:.2px;max-width:980px;margin:0 auto 24px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-bg{position:absolute;inset:0;height:100%;z-index:0;background-image:image-set(url('source/背景.webp') type('image/webp') 1x, url('source/背景.png') type('image/png') 1x);background-position:center;background-size:cover;background-repeat:no-repeat;filter:saturate(1.15) contrast(1.18) brightness(1.05);image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges;opacity:1;pointer-events:none}
.hero .tagline{color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.pill-section{padding:12px 0 24px}
.tagline{font-size:clamp(18px,2.6vw,22px);font-weight:700;color:#101418;margin:0 0 24px}
.tagline::after{content:"";display:block;width:72px;height:3px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:3px;margin:12px auto 0}
.section{padding:64px 0}
.section.contrast{position:relative;background:linear-gradient(180deg,#f2f6ff 0,#ffffff 140px)}
.section.contrast::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--border)}
.pill{display:inline-flex;align-items:center;padding:8px 14px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--muted);font-weight:600;transition:transform .2s,box-shadow .2s,border-color .2s}
.pill:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(16,20,24,.06);border-color:rgba(16,20,24,.16)}
.contact-panel{display:grid;grid-template-columns:minmax(260px,320px) 1fr;gap:28px;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:12px}
.contact-info .contact-box{justify-content:flex-start}
.contact-qr{display:flex;flex-direction:column;align-items:center;gap:12px;margin:0}
.contact-qr img{display:block;width:280px;max-width:70vw;height:auto;border-radius:12px;border:1px solid var(--border);background:#fff;box-shadow:0 10px 28px rgba(16,20,24,.08)}
.qr-note{color:var(--muted);font-size:14px;text-align:center}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.card,.feature,.product{transition:none}
}