:root{--primary:#0088cc;--primary-dark:#006699;--bg:#f5f7fa;--text:#222;--gray:#666;--card:#fff;--radius:12px;--shadow:0 4px 20px rgba(0,0,0,.08)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.6;background:#fff}
a{color:var(--primary);text-decoration:none}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid #eee;transition:.3s}
header.scrolled{background:rgba(255,255,255,.98);box-shadow:0 2px 10px rgba(0,0,0,.05)}
nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:700;color:var(--text)}
.logo img{height:40px}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:var(--text);font-weight:500;transition:.2s}
.nav-links a:hover{color:var(--primary)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:30px;font-weight:600;transition:.3s;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--primary),#00a8e8);color:#fff;box-shadow:0 4px 15px rgba(0,136,204,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,136,204,.4)}
.btn-outline{background:#fff;color:var(--primary);border:2px solid var(--primary)}
.hero{padding:140px 0 80px;background:linear-gradient(180deg,#f0f9ff 0%,#fff 100%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero h1{font-size:3rem;line-height:1.2;margin-bottom:20px;font-weight:800}
.hero h1 span{color:var(--primary)}
.hero p.lead{font-size:1.2rem;color:var(--gray);margin-bottom:30px}
.hero-btns{display:flex;gap:15px;margin-bottom:30px;flex-wrap:wrap}
.stats{display:flex;gap:30px}
.stat{text-align:center}
.stat strong{display:block;font-size:1.8rem;color:var(--primary)}
.demo-img{border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.15);border:8px solid #fff}
section{padding:80px 0}
h2{font-size:2.2rem;text-align:center;margin-bottom:50px;font-weight:700}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.feature-card{background:var(--card);padding:30px;border-radius:var(--radius);box-shadow:var(--shadow);transition:.3s}
.feature-card:hover{transform:translateY(-5px)}
.feature-card h3{margin:15px 0 10px;font-size:1.2rem}
.feature-card p{color:var(--gray);font-size:.95rem}
.ducks{display:flex;justify-content:center;gap:15px;margin:40px 0;flex-wrap:wrap}
.ducks img{width:80px;height:80px;border-radius:50%;object-fit:cover}
.pricing,.faq,.news{background:var(--bg)}
.faq-item{background:#fff;margin-bottom:12px;border-radius:10px;overflow:hidden;box-shadow:var(--shadow)}
.faq-q{padding:20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between}
.faq-a{padding:0 20px 20px;color:var(--gray);display:none}
.faq-item.open .faq-a{display:block}
footer{background:#1a1a2e;color:#ccc;padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
footer a{color:#aaa}
footer a:hover{color:#fff}
.copyright{text-align:center;border-top:1px solid #333;padding-top:20px;font-size:.9rem}
@media(max-width:992px){
.hero-grid,.footer-grid{grid-template-columns:1fr;gap:40px}
.hero h1{font-size:2.2rem}
.nav-links{display:none}
}
@media(max-width:768px){
.hero{padding:120px 0 60px}
.stats{flex-direction:column;gap:15px}
}
@media(max-width:480px){
.hero-btns{flex-direction:column}
.btn{width:100%;justify-content:center}
}