:root {
    --bg: #070b1a;
    --card: rgba(255,255,255,0.03);
    --card-hover: rgba(255,255,255,0.06);
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
    --text: #e4e6f0;
    --dim: rgba(255,255,255,0.55);
    --muted: rgba(255,255,255,0.3);
    --accent: #6366f1;
    --accent2: #06b6d4;
    --accent3: #f43f5e;
    --g1: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);
    --g2: linear-gradient(135deg, #06b6d4, #6366f1);
    --radius: 20px;
    --radius-sm: 12px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* 背景装饰 */
.bg-glow{position:fixed;pointer-events:none;z-index:0;opacity:0.15}
.bg-glow.g1{top:-20%;left:-10%;width:600px;height:600px;background:radial-gradient(circle, #6366f1 0%, transparent 70%)}
.bg-glow.g2{bottom:-10%;right:-5%;width:500px;height:500px;background:radial-gradient(circle, #f43f5e 0%, transparent 70%)}
.bg-glow.g3{top:40%;left:50%;width:400px;height:400px;background:radial-gradient(circle, #06b6d4 0%, transparent 70%);transform:translate(-50%,-50%)}

.container{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:0 28px}

/* Header */
.header{
    position:fixed;top:0;left:0;right:0;z-index:100;
    padding:0 32px;height:56px;
    display:flex;align-items:center;justify-content:space-between;
    background:rgba(7,11,26,0.8);backdrop-filter:blur(24px) saturate(1.5);
    border-bottom:1px solid var(--border);
}
.header .logo{font-size:18px;font-weight:800;letter-spacing:-0.5px;background:var(--g1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.header nav{display:flex;gap:6px;align-items:center}
.header nav a{font-size:13px;font-weight:500;color:var(--dim);padding:6px 14px;border-radius:8px;transition:all .2s}
.header nav a:hover{color:#fff;background:rgba(255,255,255,0.06)}
.header nav .btn-nav{padding:7px 20px;border-radius:20px;background:var(--g2);color:#fff!important;font-weight:600;font-size:13px}
.header nav .btn-nav:hover{box-shadow:0 4px 20px rgba(99,102,241,0.4)}

/* Hero */
.hero{text-align:center;padding:160px 28px 120px;position:relative;z-index:1}
.hero .badge{display:inline-block;padding:5px 18px;border-radius:20px;background:rgba(99,102,241,0.12);color:var(--accent);font-size:13px;font-weight:500;margin-bottom:24px;border:1px solid rgba(99,102,241,0.2)}
.hero h1{font-size:clamp(36px,6vw,64px);font-weight:900;letter-spacing:-2px;line-height:1.1;margin-bottom:20px}
.hero h1 .g{background:var(--g1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:17px;color:var(--dim);max-width:560px;margin:0 auto 36px;line-height:1.7}
.hero .hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero .btn-p{display:inline-flex;align-items:center;gap:8px;padding:13px 32px;border-radius:28px;font-size:15px;font-weight:600;transition:all .3s;text-decoration:none}
.hero .btn-p.primary{background:var(--g2);color:#fff;box-shadow:0 4px 24px rgba(99,102,241,0.3)}
.hero .btn-p.primary:hover{transform:translateY(-2px);box-shadow:0 8px 36px rgba(99,102,241,0.45)}
.hero .btn-p.ghost{border:1px solid var(--border);color:var(--text)}
.hero .btn-p.ghost:hover{border-color:var(--border-hover);background:rgba(255,255,255,0.04)}

/* Section title */
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:32px;font-weight:800;letter-spacing:-1px;margin-bottom:12px;background:var(--g2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:inline-block}
.section-title p{font-size:15px;color:var(--dim)}

/* 产品 */
.products{padding:0 0 100px;position:relative;z-index:1}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:20px}
.product-card{
    background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
    padding:32px;cursor:pointer;transition:all .3s;position:relative;overflow:hidden;
}
.product-card::after{
    content:'';position:absolute;inset:0;border-radius:var(--radius);
    background:linear-gradient(135deg, transparent, rgba(99,102,241,0.03), rgba(6,182,212,0.03));
    opacity:0;transition:opacity .4s;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--border-hover)}
.product-card:hover::after{opacity:1}
.product-card .cat{font-size:11px;color:var(--accent2);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:14px;font-weight:600}
.product-card .product-logo{width:64px;height:64px;border-radius:14px;background:rgba(255,255,255,0.04);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;margin-bottom:16px;overflow:hidden}
.product-card .product-logo img{width:100%;height:100%;object-fit:contain;display:block}
.product-card h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:10px}
.product-card p{font-size:14px;color:var(--dim);line-height:1.7;margin-bottom:18px}
.product-card .meta{display:flex;gap:14px;align-items:center;font-size:12px}
.product-card .meta .ver{background:rgba(6,182,212,0.12);color:var(--accent2);padding:3px 10px;border-radius:6px;font-weight:600}
.product-card .meta .date{color:var(--muted)}

/* 业务 */
.services{padding:0 0 100px;position:relative;z-index:1}
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.service-card{
    background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
    padding:36px 28px;text-align:center;transition:all .3s;
}
.service-card:hover{transform:translateY(-4px);border-color:var(--border-hover);box-shadow:var(--shadow)}
.service-card .icon{width:56px;height:56px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:20px}
.service-card .icon.p1{background:rgba(99,102,241,0.14)}
.service-card .icon.p2{background:rgba(6,182,212,0.14)}
.service-card .icon.p3{background:rgba(244,63,94,0.14)}
.service-card .icon.p4{background:rgba(168,85,247,0.14)}
.service-card h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:10px}
.service-card p{font-size:14px;color:var(--dim);line-height:1.7}

/* 联系 */
.contact{padding:0 0 100px;position:relative;z-index:1}
.contact-form{max-width:520px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:40px}
.form-group{margin-bottom:22px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--dim);margin-bottom:8px;letter-spacing:0.5px}
.form-input,.form-textarea{
    width:100%;padding:13px 16px;background:rgba(255,255,255,0.03);border:1px solid var(--border);
    border-radius:var(--radius-sm);color:#fff;font-size:14px;font-family:inherit;transition:all .3s;outline:none;
}
.form-input:focus,.form-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(99,102,241,0.12)}
.form-textarea{min-height:130px;resize:vertical}
.btn-submit{
    width:100%;padding:15px;border:none;border-radius:28px;background:var(--g2);color:#fff;
    font-size:15px;font-weight:700;cursor:pointer;transition:all .3s;
}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,0.35)}
.btn-submit:disabled{opacity:.6;cursor:not-allowed;transform:none}

/* Footer */
.footer{text-align:center;padding:36px 28px;border-top:1px solid var(--border);position:relative;z-index:1}
.footer p{font-size:13px;color:var(--muted)}

/* Toast */
.toast{position:fixed;top:24px;right:24px;z-index:200;padding:14px 24px;border-radius:var(--radius-sm);color:#fff;font-size:14px;animation:slideIn .3s ease;backdrop-filter:blur(8px)}
.toast.success{background:rgba(22,163,74,0.9)}
.toast.error{background:rgba(220,38,38,0.9)}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* 空状态 */
.empty{text-align:center;padding:60px 28px;color:var(--dim);grid-column:1/-1}
.empty p{font-size:15px}

/* 响应式 */
@media(max-width:768px){
    .hero{padding:120px 20px 80px}.hero h1{font-size:32px}
    .product-grid{grid-template-columns:1fr}
    .services-grid{grid-template-columns:1fr}
    .header{padding:0 16px}.header nav{gap:2px}.header nav a{font-size:12px;padding:6px 10px}
}