body{margin:0;padding:0;background:#f5f5f5;font-family:-apple-system,system-ui,PingFang SC,Microsoft YaHei,sans-serif}.app-container{max-width:100%;min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,#1a1a2e,#16213e);color:#fff;padding:14px 16px;text-align:center}.app-header h1{margin:0;font-size:18px;font-weight:600}.app-main{flex:1;padding:10px 10px 80px;overflow-y:auto}.bottom-nav{position:fixed;bottom:16px;left:12px;right:12px;display:flex;justify-content:space-around;align-items:center;z-index:100;background:#1a1a2ef5;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:20px;box-shadow:0 4px 20px #00000040;padding:6px 4px;height:56px}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;padding:4px 6px;border-radius:12px;transition:all .2s ease;color:#ffffff80;min-width:0}.nav-item.active{color:#409eff}.nav-item.active .nav-icon{background:#409eff26;padding:4px;border-radius:8px}.nav-icon{width:22px;height:22px;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.nav-icon svg{width:20px;height:20px;display:block}.nav-item.active .nav-icon svg{color:#409eff}.nav-label{font-size:10px;line-height:1;white-space:nowrap}.app-main{padding-bottom:85px}.sub-tabs{display:flex;gap:4px;margin-bottom:12px}.sub-tab-btn{flex:1;padding:8px 10px;border:none;border-radius:10px;font-size:13px;font-weight:500;cursor:pointer;background:#e0e0e0;color:#666;transition:all .2s}.sub-tab-btn.active{background:#1a1a2e;color:#fff}.banner-section{margin-top:16px;display:flex;flex-direction:column;gap:8px}.banner-card{background:#fff;border:1px solid #edf0f5;border-radius:12px;padding:12px 14px;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:12px}.banner-card:active{transform:scale(.98)}.banner-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.banner-body{flex:1}.banner-title{font-size:14px;font-weight:600}.banner-desc{font-size:12px;color:#909399;margin-top:2px}.banner-arrow{color:#c0c4cc;font-size:16px}