:root{--primary-text:#2c3e50;--secondary-text:#7f8c8d;--bg-body:#f0f2f5;--card-bg:#ffffff;--accent-color:#3498db;--bilibili-pink:#fb7299;--hover-shadow:0 8px 20px rgba(0, 0, 0, 0.08)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background-color:var(--bg-body);color:var(--primary-text);min-height:100vh;display:flex;flex-direction:column;align-items:center}.main-container{width:100%;max-width:1400px;margin:0 auto;min-height:100vh;background-color:var(--card-bg);box-shadow:0 0 30px rgba(0,0,0,.05);display:flex;flex-direction:column}.header-banner{width:100%;height:260px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;background-color:#333}.header-bg{position:absolute;top:0;left:0;right:0;bottom:0;background-position:center center;background-size:cover;background-repeat:no-repeat;filter:blur(40px) brightness(.6);transform:scale(1.1);z-index:1;transition:background-image .5s ease}.header-content{position:relative;z-index:2;width:100%;max-width:1200px;padding:0 40px;display:flex;align-items:flex-end;gap:24px}.header-cover-img{width:140px;height:140px;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.3);object-fit:cover;background-color:#eee;flex-shrink:0}.header-info{flex:1;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.5);margin-bottom:10px;min-width:0}.header-title{font-size:32px;font-weight:800;margin-bottom:8px;line-height:1.2}.header-desc{font-size:14px;opacity:.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:800px}.bili-btn{margin-left:auto;margin-bottom:10px;display:flex;align-items:center;gap:6px;background-color:var(--bilibili-pink);color:#fff;padding:8px 16px;border-radius:50px;text-decoration:none;font-size:14px;font-weight:700;transition:all .2s;box-shadow:0 4px 12px rgba(251,114,153,.3);white-space:nowrap}.bili-btn:hover{background-color:#fc8bab;transform:translateY(-2px);box-shadow:0 6px 16px rgba(251,114,153,.4)}.bili-btn:active{transform:scale(.95)}.bili-icon{width:20px;height:20px}.search-section{padding:20px 30px;background-color:rgba(255,255,255,.95);position:sticky;top:0;z-index:100;border-bottom:1px solid #f0f0f0;backdrop-filter:blur(10px)}.search-wrapper{position:relative;max-width:800px;margin:0 auto;display:flex;gap:12px}.playlist-select{padding:0 20px;height:46px;border-radius:50px;border:1px solid #e1e4e8;background-color:#fff;font-size:15px;color:var(--primary-text);outline:0;cursor:pointer;transition:all .3s;background-image:url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%232c3e50%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");background-repeat:no-repeat;background-position:right 12px top 50%;background-size:10px auto;appearance:none;min-width:140px}.playlist-select:focus,.playlist-select:hover{border-color:var(--accent-color)}.search-input-box{position:relative;flex:1}.search-input{width:100%;padding:12px 20px 12px 45px;border-radius:50px;border:1px solid #e1e4e8;background-color:#f8f9fa;font-size:16px;outline:0;transition:all .3s;height:46px}.search-input:focus{background-color:#fff;border-color:var(--accent-color);box-shadow:0 4px 12px rgba(52,152,219,.15)}.search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:14px;height:14px;border:2px solid #95a5a6;border-radius:50%}.search-icon::after{content:'';position:absolute;width:5px;height:2px;background:#95a5a6;bottom:-1px;right:-3px;transform:rotate(45deg)}.content-wrapper{display:flex;position:relative;flex:1;align-items:flex-start}.playlist-container{padding:20px 30px;flex:1;min-width:0}.alphabet-nav{position:sticky;top:80px;max-height:calc(100vh - 80px);width:40px;display:flex;flex-direction:column;align-items:center;padding:20px 0;font-size:12px;color:#999;user-select:none;overflow-y:auto;margin-right:5px}.alphabet-nav span{padding:2px 0;cursor:pointer;font-weight:600;width:100%;text-align:center;transition:color .2s}.alphabet-nav span:hover{color:var(--accent-color);font-weight:800}.group-header{font-size:24px;font-weight:800;color:var(--accent-color);margin-bottom:15px;padding-bottom:5px;border-bottom:2px solid #f0f0f0;position:sticky;top:74px;background-color:rgba(255,255,255,.95);z-index:10}.group-section{margin-bottom:30px}.song-grid{display:grid;gap:15px;grid-template-columns:1fr}.song-card{background:#fff;border-radius:10px;padding:12px;display:flex;align-items:center;border:1px solid #f0f0f0;transition:transform .2s,box-shadow .2s;cursor:pointer;position:relative;overflow:hidden;height:100%;animation:fadeInUp .5s ease both}.song-card:active{transform:scale(.98)}.song-card:hover{transform:translateY(-2px);box-shadow:var(--hover-shadow);border-color:rgba(52,152,219,.3)}.song-cover{width:56px;height:56px;border-radius:6px;object-fit:cover;margin-right:12px;background:#eee;flex-shrink:0}.song-info{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center}.song-title{font-size:15px;font-weight:700;color:var(--primary-text);margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;white-space:normal;word-break:break-word;line-height:1.4}.song-artist{font-size:12px;color:var(--secondary-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.status-msg{text-align:center;padding:50px;color:#999}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.copy-tip{position:fixed;background-color:rgba(0,0,0,.75);color:#fff;padding:6px 12px;border-radius:4px;font-size:13px;pointer-events:none;z-index:9999;transform:translate(-50%,-100%);animation:floatUpFadeOut .8s ease-out forwards}@keyframes floatUpFadeOut{0%{opacity:1;transform:translate(-50%,-100%) translateY(0)}100%{opacity:0;transform:translate(-50%,-100%) translateY(-30px)}}@media (max-width:600px){.header-banner{height:auto;padding:80px 0 30px}.header-content{flex-direction:column;align-items:center;text-align:center}.header-cover-img{width:120px;height:120px;margin-bottom:15px;margin-right:0}.header-title{font-size:24px}.bili-btn{margin-left:0;margin-top:15px;width:100%;justify-content:center}.search-wrapper{flex-direction:column}.playlist-select{width:100%}}@media (min-width:600px){.song-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:900px){.song-grid{grid-template-columns:repeat(3,1fr)}}@media (min-width:1200px){.song-grid{grid-template-columns:repeat(4,1fr)}}