*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}:root{--primary: #4f6ef7;--primary-dark: #3b56d4;--bg: #f4f6fb;--card: #ffffff;--text: #1f2430;--muted: #8a93a6;--danger: #f26d6d;--border: #e6e9f2}html,body{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;background:var(--bg);color:var(--text);display:flex;justify-content:center;min-height:100vh}.page{width:100%;max-width:480px;padding:0 16px 40px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:22px 2px 14px}.topbar .title{font-size:22px;font-weight:700}.topbar .title span{color:var(--primary)}.topbar .date{font-size:12px;color:var(--muted);margin-top:3px}.stats{display:flex;gap:10px;margin-bottom:16px}.stat{flex:1;background:var(--card);border-radius:14px;padding:14px 16px;box-shadow:0 2px 10px #1f24300a}.stat .num{font-size:24px;font-weight:700}.stat .label{font-size:12px;color:var(--muted);margin-top:2px}.stat.remain .num{color:var(--primary)}.stat.done .num{color:#22b07d}.adder{display:flex;gap:10px;margin-bottom:16px}.adder input{flex:1;padding:14px 16px;font-size:16px;border:1.5px solid var(--border);border-radius:12px;outline:none;background:#fff;transition:border-color .2s}.adder input:focus{border-color:var(--primary)}.adder input.shake{border-color:var(--danger);animation:shake .35s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}50%{transform:translate(5px)}75%{transform:translate(-3px)}}.btn-add{width:52px;border:none;border-radius:12px;background:var(--primary);color:#fff;font-size:26px;line-height:1;cursor:pointer;transition:background .2s;flex-shrink:0}.btn-add:active{background:var(--primary-dark)}.filters{display:flex;gap:8px;margin-bottom:14px}.filters button{border:1px solid var(--border);background:#fff;color:var(--muted);font-size:13px;padding:6px 16px;border-radius:999px;cursor:pointer}.filters button.active{background:var(--primary);border-color:var(--primary);color:#fff}.todo-list{list-style:none;display:flex;flex-direction:column;gap:10px}.todo-item{display:flex;align-items:center;gap:12px;background:var(--card);border-radius:12px;padding:15px 16px;box-shadow:0 2px 8px #1f24300a;animation:slideIn .25s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.todo-check{width:24px;height:24px;border-radius:50%;border:2px solid #c9d2e8;flex-shrink:0;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;background:#fff;padding:0}.todo-check.checked{background:#22b07d;border-color:#22b07d;color:#fff;font-size:14px}.todo-text{flex:1;font-size:15px;word-break:break-all;transition:color .2s}.todo-item.completed .todo-text{color:var(--muted);text-decoration:line-through}.btn-del{border:none;background:transparent;color:#c9d2e8;font-size:18px;cursor:pointer;padding:4px 6px;flex-shrink:0;transition:color .2s}.btn-del:active{color:var(--danger)}.empty{text-align:center;padding:50px 0 30px;color:var(--muted)}.empty .icon{font-size:44px;margin-bottom:10px}.empty p{font-size:14px}.footer-bar{display:flex;justify-content:space-between;align-items:center;margin-top:18px;font-size:13px;color:var(--muted);padding:0 4px}.btn-clear{border:none;background:none;color:var(--danger);font-size:13px;cursor:pointer;padding:4px}.loading{text-align:center;color:var(--muted);font-size:14px;padding:40px 0}.toast{position:fixed;left:50%;bottom:60px;transform:translate(-50%) translateY(20px);background:rgba(31,36,48,.88);color:#fff;font-size:14px;padding:10px 20px;border-radius:999px;opacity:0;pointer-events:none;transition:all .3s;z-index:99;max-width:80vw;text-align:center}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}