.racer-page{position:fixed;top:60px;right:0;bottom:0;left:0;background:#05010f;z-index:1}.racer-canvas{position:absolute;top:0;right:0;bottom:0;left:0}.racer-canvas canvas{display:block;touch-action:none}.racer-ui{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;font-family:inherit}.racer-topbar{position:absolute;top:16px;left:20px;right:20px;display:flex;justify-content:space-between;align-items:flex-start}.racer-stat{display:flex;flex-direction:column;gap:2px}.racer-stat.right{text-align:right}.racer-stat-label{font-size:10px;letter-spacing:2px;color:var(--text-muted)}.racer-stat-value{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff;text-shadow:0 0 12px rgba(0,212,255,.6)}.racer-speedbox{text-align:center}.racer-speed{font-size:18px;font-weight:700;color:var(--accent-cyan);font-variant-numeric:tabular-nums;text-shadow:0 0 10px rgba(0,212,255,.5)}.racer-speed-unit{font-size:10px;color:var(--text-muted);letter-spacing:1px}.racer-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at center,#05010f40,#05010fc7);transition:opacity .45s ease;pointer-events:auto}.racer-overlay.hidden{opacity:0;pointer-events:none}.racer-panel{text-align:center;padding:40px 48px;background:#0d11178c;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--border-bright);border-radius:16px;box-shadow:0 0 60px #4e9af126;animation:fadeInUp .5s ease}.racer-title{font-size:44px;font-weight:900;letter-spacing:2px;background:linear-gradient(135deg,var(--accent-cyan),var(--accent-blue),var(--accent-purple));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}.racer-title.small{font-size:30px}.racer-sub{color:var(--text-secondary);margin-bottom:20px;font-size:14px;letter-spacing:1px}.racer-help{color:var(--text-muted);font-size:12px;margin-bottom:24px;letter-spacing:.5px}.racer-btn{pointer-events:auto;padding:12px 44px;font-size:16px;font-weight:700;letter-spacing:2px;color:#fff;background:linear-gradient(135deg,var(--accent-blue),var(--accent-cyan));border:none;border-radius:10px;cursor:pointer;box-shadow:0 4px 20px #4e9af166;transition:transform .15s ease,box-shadow .15s ease}.racer-btn:hover{transform:translateY(-2px);box-shadow:0 8px 28px #00d4ff80}.racer-final{font-size:56px;font-weight:900;color:#fff;text-shadow:0 0 24px rgba(0,212,255,.7);margin:8px 0 4px;font-variant-numeric:tabular-nums}.racer-bestline{color:var(--text-secondary);font-size:13px;margin-top:18px;letter-spacing:1px}.racer-newbest{color:#ffe14d;text-shadow:0 0 14px rgba(255,225,77,.6);font-size:14px;font-weight:700;letter-spacing:2px;margin-top:10px;animation:pulse 1.2s ease-in-out infinite}.tool-card-icon--pink{background:linear-gradient(135deg,#ec489926,#a855f71a);border:1px solid rgba(236,72,153,.2)}.tool-card-icon--pink svg{fill:var(--accent-pink)}.tool-card:hover .tool-card-icon--pink{box-shadow:0 0 20px #ec48994d;border-color:var(--accent-pink)}.tool-card-icon--blue{background:linear-gradient(135deg,#4e9af126,#00d4ff14);border:1px solid rgba(78,154,241,.25)}.tool-card-icon--blue svg{fill:var(--accent-blue)}.tool-card:hover .tool-card-icon--blue{box-shadow:0 0 20px #4e9af14d;border-color:var(--accent-blue)}@media (max-width: 640px){.racer-title{font-size:30px}.racer-panel{padding:28px 22px}.racer-stat-value{font-size:20px}.racer-final{font-size:40px}}:root{--bg: #eef1f6;--bg-grad: radial-gradient(1200px 600px at 20% -10%, #dbe4f0 0%, transparent 60%), radial-gradient(1000px 500px at 90% 10%, #e8e2f2 0%, transparent 55%);--surface: #ffffff;--text: #2b3445;--text-dim: #6b7688;--primary: #4f6ef7;--primary-soft: rgba(79, 110, 247, .1);--border: #e2e7ef;--shadow: 0 6px 24px rgba(43, 52, 69, .08);--radius: 14px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:var(--bg-grad),var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}.home-page{max-width:960px;margin:0 auto;padding:64px 24px}.home-header h1{font-size:34px;font-weight:700;letter-spacing:-.5px}.home-header p{margin-top:8px;color:var(--text-dim);font-size:15px}.demo-grid{margin-top:40px;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.demo-card{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-decoration:none;color:inherit;box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.demo-card:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:0 10px 30px #4f6ef729}.demo-card-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.demo-card-name{font-size:17px;font-weight:600}.demo-card-badge{font-size:11px;font-weight:600;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:2px 10px}.demo-card-desc{font-size:13.5px;line-height:1.6;color:var(--text-dim);flex:1}.demo-card-go{font-size:13px;font-weight:500;color:var(--primary)}.racer-back{position:fixed;top:16px;left:16px;z-index:20;color:#cfd8e6;background:#141a268c;border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:6px 14px;font-size:13px;text-decoration:none;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.racer-back:hover{color:#fff}