:root{--lvya-green-primary: #2ECC71;--lvya-green-light: #A8E6CF;--lvya-green-dark: #1B8C4E;--lvya-blue-tech: #00D4FF;--lvya-blue-dark: #0088CC;--lvya-bg-dark: #0A1628;--lvya-bg-card: #111D33;--lvya-bg-card-hover: #162544;--lvya-text-primary: #E8F4F0;--lvya-text-secondary: #8BA5B8;--lvya-text-muted: #5A7A8A;--lvya-shadow-glow: 0 0 20px rgba(0, 212, 255, .15);--lvya-shadow-card: 0 8px 32px rgba(0, 0, 0, .3);--lvya-radius-sm: 8px;--lvya-radius-md: 12px;--lvya-radius-lg: 20px;--lvya-radius-xl: 28px;--lvya-transition: all .3s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;background:var(--lvya-bg-dark);color:var(--lvya-text-primary);min-height:100vh;-webkit-font-smoothing:antialiased;overflow-x:hidden}a{color:var(--lvya-blue-tech);text-decoration:none;transition:var(--lvya-transition)}a:hover{color:var(--lvya-green-primary)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--lvya-bg-dark)}::-webkit-scrollbar-thumb{background:var(--lvya-text-muted);border-radius:3px}.btn-25d{padding:12px 24px;border-radius:var(--lvya-radius-md);font-size:.95rem;font-weight:600;cursor:pointer;transition:var(--lvya-transition);border:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;position:relative;transform:perspective(800px) rotateX(0);box-shadow:0 4px 12px #0000004d,0 0 20px #00d4ff1a;text-decoration:none}.btn-25d:hover{transform:perspective(800px) rotateX(-2deg) translateY(-2px);box-shadow:0 8px 24px #0006,0 0 30px #00d4ff33}.btn-25d:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.btn-primary{background:linear-gradient(135deg,var(--lvya-green-primary),var(--lvya-green-dark));color:#fff}.btn-secondary{background:var(--lvya-bg-card);color:var(--lvya-blue-tech);border:1px solid rgba(0,212,255,.3)}