:root{--bg: #f6f7fb;--bg-grad-from: #eef0ff;--card: #ffffff;--text: #1d2333;--muted: #68718c;--primary: #6366f1;--accent: #8b5cf6;--border: #e6e8f2;--shadow: 0 10px 30px rgba(30, 35, 80, .08);--shadow-lg: 0 18px 45px rgba(30, 35, 80, .12);--radius: 18px}[data-theme=dark]{--bg: #0e1120;--bg-grad-from: #161b36;--card: #1a1f38;--text: #eef0f8;--muted: #9aa3bd;--primary: #818cf8;--accent: #a78bfa;--border: #2a3054;--shadow: 0 10px 30px rgba(0, 0, 0, .35);--shadow-lg: 0 18px 45px rgba(0, 0, 0, .45)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,-apple-system,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;background:radial-gradient(1100px 560px at 8% -10%,var(--bg-grad-from),transparent 60%),var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;transition:background-color .3s ease,color .3s ease}.app{min-height:100vh;display:flex;flex-direction:column}main{flex:1}.container{max-width:960px;margin:0 auto;padding:0 20px}.header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 85%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:.3px;color:var(--text);text-decoration:none}.brand-dot{width:14px;height:14px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 22%,transparent)}.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:18px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:transform .15s ease,box-shadow .2s ease,border-color .2s}.icon-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow);border-color:var(--primary)}.hero{padding:76px 0 60px;text-align:center}.hero-eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;background:color-mix(in srgb,var(--primary) 12%,transparent);color:var(--primary);font-size:14px;font-weight:600;margin:0 0 18px}.hero h1{margin:0 0 18px;font-size:clamp(30px,5vw,46px);line-height:1.28;letter-spacing:.5px}.hero h1 .grad{background:linear-gradient(120deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{margin:0 auto 32px;max-width:560px;color:var(--muted);font-size:16px;line-height:1.9}.btn-primary{border:0;cursor:pointer;padding:13px 28px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:15px;font-weight:700;font-family:inherit;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .2s ease,filter .2s ease}.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:var(--shadow-lg)}.btn-primary:active{transform:translateY(0)}.btn-ghost{width:48px;height:48px;flex:none;border-radius:14px;border:1px solid var(--border);background:var(--card);color:var(--primary);font-size:24px;cursor:pointer;transition:all .15s ease}.btn-ghost:hover{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 10%,var(--card));transform:translateY(-1px)}.btn-soft{margin-top:20px;border:0;cursor:pointer;padding:9px 22px;border-radius:999px;background:color-mix(in srgb,var(--primary) 12%,transparent);color:var(--primary);font-size:14px;font-weight:600;font-family:inherit;transition:filter .2s,transform .15s}.btn-soft:hover{filter:brightness(1.1);transform:translateY(-1px)}input[type=text]{width:100%;padding:11px 14px;border-radius:12px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:border-color .2s,box-shadow .2s}input[type=text]:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 20%,transparent)}input[type=text]::placeholder{color:var(--muted)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding-bottom:76px;align-items:start}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;min-width:0;animation:rise .5s ease both}.card:nth-child(2){animation-delay:.08s}.card:nth-child(3){animation-delay:.16s}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}.card h2{margin:0 0 6px;font-size:19px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.card-desc{margin:0 0 20px;color:var(--muted);font-size:14px}.badge{font-size:12px;font-weight:700;color:var(--primary);background:color-mix(in srgb,var(--primary) 12%,transparent);padding:3px 10px;border-radius:999px}.messages{grid-column:1 / -1}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}.counter{display:flex;align-items:center;justify-content:center;gap:22px;margin-top:8px}.counter-num{font-size:34px;font-weight:800;font-variant-numeric:tabular-nums;min-width:138px;text-align:center}.counter-face{font-size:26px;font-weight:400}.todo-form{display:flex;gap:10px;margin-bottom:16px}.todo-list{list-style:none;margin:0;padding:0;max-height:264px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.todo-list li{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;background:var(--bg);border:1px solid var(--border);animation:rise .25s ease both}.todo-list li.done span{text-decoration:line-through;color:var(--muted)}.check{width:24px;height:24px;flex:none;border-radius:8px;border:1.5px solid var(--border);background:var(--card);color:#fff;cursor:pointer;font-size:14px;display:inline-flex;align-items:center;justify-content:center;transition:all .15s}.todo-list li.done .check{background:linear-gradient(135deg,var(--primary),var(--accent));border-color:transparent}.todo-list li span{flex:1;font-size:14px;word-break:break-word}.remove{width:26px;height:26px;flex:none;border:0;background:transparent;color:var(--muted);font-size:18px;cursor:pointer;border-radius:8px;line-height:1}.remove:hover{color:#ef4444;background:color-mix(in srgb,#ef4444 12%,transparent)}.empty{color:var(--muted);font-size:14px;text-align:center;padding:16px 0}.msg-form{display:grid;grid-template-columns:180px 1fr auto;gap:10px;margin-bottom:16px}.msg-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px;max-height:320px;overflow-y:auto}.msg-list li{padding:12px 14px;border-radius:12px;background:var(--bg);border:1px solid var(--border);display:flex;flex-direction:column;gap:4px;animation:rise .25s ease both}.msg-list strong{font-size:13px;font-weight:700;color:var(--primary)}.msg-list span{font-size:14px;line-height:1.6;word-break:break-word}.footer{border-top:1px solid var(--border);padding:24px 0;text-align:center;color:var(--muted);font-size:13px}.footer p{margin:0}@media (max-width: 760px){.grid,.msg-form{grid-template-columns:1fr}.hero{padding:52px 0 44px}.messages{grid-column:auto}}