:root{--primary: #07c160;--primary-dark: #06ad56;--bg: #ededed;--bg-card: #ffffff;--bg-chat: #ededed;--text: #1a1a1a;--text-secondary: #888;--border: #e0e0e0;--bubble-self: #95ec69;--bubble-other: #ffffff;--danger: #fa5151;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#app{height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;overflow:hidden}button{font-family:inherit;cursor:pointer;border:none;background:none}input,textarea{font-family:inherit;font-size:inherit;border:none;outline:none}a{color:var(--primary);text-decoration:none}.page{height:100%;display:flex;flex-direction:column}.header{height:48px;background:var(--bg-card);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 16px;gap:12px;flex-shrink:0}.header h1{font-size:16px;font-weight:500;margin:0;flex:1}.header .back{font-size:24px;color:var(--text);padding:4px;margin:-4px 0 -4px -8px}.btn{background:var(--primary);color:#fff;padding:12px 16px;border-radius:6px;font-size:15px;width:100%;transition:background .2s}.btn:active{background:var(--primary-dark)}.btn:disabled{background:#ccc}.btn-text{color:var(--primary);padding:8px}.input{background:#f5f5f5;padding:12px 14px;border-radius:6px;width:100%}.list{flex:1;overflow-y:auto;background:var(--bg-card)}.list-item{display:flex;align-items:center;padding:12px 16px;gap:12px;border-bottom:1px solid var(--border);cursor:pointer}.list-item:active{background:#f5f5f5}.avatar{width:40px;height:40px;border-radius:6px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.list-item-content{flex:1;min-width:0}.list-item-title{font-weight:500;margin-bottom:2px}.list-item-subtitle{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.fab{position:absolute;right:16px;bottom:24px;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:28px;box-shadow:0 4px 12px #00000026}.fab:active{background:var(--primary-dark)}.empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-secondary);gap:8px}