*{box-sizing:border-box}body{margin:0;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#1d1d1f;background:#f7f7f9;line-height:1.5}
a{color:#4b3fd1}header,footer{padding:1rem 5%;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;background:#fff;border-bottom:1px solid #e5e5ea}
footer{border-top:1px solid #e5e5ea;margin-top:3rem;font-size:.9rem}.brand{font-weight:700;text-decoration:none;color:#1d1d1f}nav a{margin-left:1rem}
main{max-width:1100px;margin:auto;padding:0 5%}.hero{text-align:center;padding:3rem 0}.hero h1{font-size:clamp(1.8rem,5vw,2.8rem);margin:.2rem}
.cards,.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card{background:#fff;border:1px solid #e5e5ea;border-radius:12px;padding:1.2rem}.card h3{margin:.2rem 0}
.tag{display:inline-block;font-size:.75rem;background:#eeeaff;color:#4b3fd1;border-radius:99px;padding:.1rem .6rem}
.sponsor{border:2px dashed #4b3fd1;background:#fbfaff;text-align:center;border-radius:12px;padding:1.5rem;margin:2rem 0}
.sponsor small{display:block;color:#888;text-transform:uppercase;letter-spacing:.1em}
.controls{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0}.controls input,.controls select{padding:.6rem;border:1px solid #ccc;border-radius:8px;flex:1;min-width:180px;font-size:1rem}
.muted{color:#666;font-size:.9rem}
.card ol{padding-left:1.2rem;font-size:.9rem;color:#444}