*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background-color:#f5f7fa;color:#1f2d3d}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{background-color:#fff;box-shadow:0 2px 10px rgba(0,0,0,0.05);position:sticky;top:0;z-index:100}.nav-container{display:flex;justify-content:space-between;align-items:center;height:64px}.logo{font-size:24px;font-weight:700;color:#0052d9;text-decoration:none}.nav-menu{display:flex;list-style:none;gap:32px}.nav-menu a{text-decoration:none;color:#1f2d3d;font-weight:500}.nav-menu a:hover{color:#0052d9}.user-area a{margin-left:16px;text-decoration:none;color:#0052d9}.btn-logout{color:#e34d59!important}main{min-height:calc(100vh - 130px);padding:32px 0}.card{background:white;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,0.05);padding:24px;margin-bottom:24px}.btn{display:inline-block;background:#0052d9;color:white;border:none;padding:8px 20px;border-radius:8px;cursor:pointer;text-decoration:none;font-size:14px}.btn-danger{background:#e34d59}.btn-sm{padding:4px 12px;font-size:12px}input,textarea{width:100%;padding:10px 12px;border:1px solid #dcdfe6;border-radius:8px;margin-top:8px;margin-bottom:16px}.post-item{border-bottom:1px solid #edf2f7;padding:16px 0}.post-title{font-size:18px;margin-bottom:8px}.post-meta{font-size:12px;color:#7e8c8d}.chat-message{padding:10px 0;border-bottom:1px solid #f0f0f0}#chat-box{height:400px;overflow-y:auto

/* 新增动效 */

.page-fade{animation:fadeIn 0.

@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;tran

.btn{position:relative;overflow:hidden}

.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,0.5);transform:scale(0);animation:ripple 0.6s linear;pointer-events:none}

@keyframes ripple{to{transform:scale(4);opacity:0}}

.chat-message{animation:slideIn 0.2s ease}

@keyframes slideIn{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:translateX(0)}}

.online-dot{display:inline-block;width:8px;height:8px;background:#4caf50;border-radius:50%;margin-right:8px}