*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;background:#f0f2f5;color:#1a1a2e;line-height:1.7}
.header{text-align:center;padding:40px 20px 30px;background:linear-gradient(135deg,#1a2a4a 0%,#2d5aa0 100%);color:#fff}
.header h1{font-size:28px;font-weight:700;margin-bottom:8px}
.header .subtitle{font-size:15px;opacity:0.85}
.legend{display:flex;justify-content:center;gap:24px;margin:18px 0 0;flex-wrap:wrap}
.legend-item{display:flex;align-items:center;gap:6px;font-size:13px;opacity:0.9}
.legend-item svg{width:18px;height:18px}
.container{max-width:1100px;margin:0 auto;padding:30px 20px 50px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}
.card{background:#fff;border-radius:14px;padding:22px 24px;box-shadow:0 2px 12px rgba(0,0,0,0.08);transition:transform 0.2s,box-shadow 0.2s;border:1px solid #e8ecf2}
.card:hover{transform:translateY(-3px);box-shadow:0 6px 24px rgba(45,90,160,0.15)}
.card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:14px}
.card-title{font-size:18px;font-weight:700;color:#1a2a4a}
.card-tag{font-size:11px;padding:3px 10px;border-radius:10px;white-space:nowrap;font-weight:600}
.tag-free{background:#e8f5e9;color:#2e7d32}
.tag-paid{background:#fff3e0;color:#e65100}
.tag-b2b{background:#ede7f6;color:#5e35b1}
.tag-edu{background:#e3f2fd;color:#1565c0}
.card-desc{font-size:13.5px;color:#5a6478;margin-bottom:16px;min-height:40px}
.devices{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.device{display:flex;align-items:center;gap:8px;padding:6px 14px;border-radius:8px;font-size:13px;font-weight:600}
.device svg{width:20px;height:20px}
.d-primary{background:#e3f2fd;color:#1565c0}
.d-secondary{background:#f5f5f5;color:#757575}
.d-nosupport{display:none}
.card-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid #eef1f6;padding-top:12px;font-size:13px}
.price{font-weight:700;color:#d84315;font-size:15px}
.status{color:#43a047;font-weight:600;font-size:12px}
.tech-note{font-size:11px;color:#aab;line-height:1.3;margin-top:8px}
.section-title{font-size:16px;font-weight:700;color:#2d5aa0;margin:30px 0 14px;padding-bottom:8px;border-bottom:2px solid #e0e6ee}
.note-box{background:#fff;border-left:4px solid #2d5aa0;border-radius:0 8px 8px 0;padding:14px 20px;margin-top:30px;font-size:13px;color:#5a6478}
.note-box b{color:#1a2a4a}
@media(max-width:700px){.grid{grid-template-columns:1fr}}
.muted-text{opacity:0.6}
.mt8{margin-top:8px}
.btn{display:inline-block;padding:7px 18px;border-radius:8px;font-size:13px;font-weight:600;text-decoration:none;transition:background 0.2s;color:#fff;margin-top:12px}
.btn-primary{background:#2d5aa0}
.btn-primary:hover{background:#1a2a4a}
.btn-green{background:#43a047}
.btn-green:hover{background:#2e7d32}