:root{--bg: #f5f7fb;--fg: #1a1f36;--muted: #6b7280;--accent: #6d28d9;--card: #ffffff;--border: #e5e7eb}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--fg)}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:16px;background:radial-gradient(1200px 600px at 10% -10%,#ede9fe 0%,transparent 60%),radial-gradient(1000px 500px at 110% 110%,#dbeafe 0%,transparent 55%),var(--bg);transition:background .3s ease}.app.dark{--bg: #0f111a;--fg: #f3f4f6;--muted: #9ca3af;--card: #181b27;--border: #2a2f3d;--accent: #a78bfa}.card{width:min(560px,100%);background:var(--card);border:1px solid var(--border);border-radius:20px;padding:40px 36px;box-shadow:0 20px 60px #00000014;text-align:center}.badge{display:inline-block;font-size:13px;font-weight:600;color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,transparent);padding:6px 12px;border-radius:999px;margin-bottom:20px}h1{font-size:34px;letter-spacing:-.5px;margin-bottom:12px}.sub{color:var(--muted);line-height:1.6;font-size:15px;margin-bottom:28px}.counter{display:flex;align-items:center;justify-content:center;gap:18px;margin-bottom:24px}.counter button{width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:transparent;color:var(--fg);font-size:22px;cursor:pointer;transition:transform .1s ease,background .2s ease}.counter button:hover{background:color-mix(in srgb,var(--accent) 10%,transparent)}.counter button:active{transform:scale(.94)}.count{font-size:28px;font-weight:700;min-width:56px;font-variant-numeric:tabular-nums}.actions{margin-bottom:24px}.ghost{border:1px solid var(--border);background:transparent;color:var(--fg);padding:10px 18px;border-radius:12px;font-size:14px;cursor:pointer;transition:background .2s ease}.ghost:hover{background:color-mix(in srgb,var(--accent) 8%,transparent)}.features{list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;color:var(--muted);font-size:14px}footer{color:var(--muted);font-size:13px}:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.5;font-weight:400;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0}#root{min-height:100vh}