*{margin:0;padding:0;box-sizing:border-box}:root{--primary-blue: #3370FF;--light-blue: #4d9eff;--cyan-blue: #00d4ff;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-card: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--accent-blue: #60a5fa;--gradient-blue: linear-gradient(135deg, #3370FF 0%, #4d9eff 100%);--gradient-light-blue: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);--gradient-cyan: linear-gradient(135deg, #00d4ff 0%, #4d9eff 100%);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .05);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--shadow-blue: 0 8px 32px rgba(51, 112, 255, .15);--border-color: #e2e8f0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,sans-serif;color:var(--text-primary);background:var(--bg-primary);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1400px;margin:0 auto;padding:0 40px}.section{padding:120px 0;position:relative}.section-title{font-size:3rem;font-weight:800;text-align:center;margin-bottom:1rem;letter-spacing:-.02em;color:var(--text-primary)}.section-subtitle{text-align:center;font-size:1.25rem;color:var(--text-secondary);margin-bottom:4rem;max-width:700px;margin-left:auto;margin-right:auto;font-weight:400}.btn{display:inline-flex;align-items:center;justify-content:center;padding:16px 40px;border-radius:12px;font-size:1.1rem;font-weight:600;text-decoration:none;transition:all .3s cubic-bezier(.4,0,.2,1);cursor:pointer;border:none;letter-spacing:.01em}.btn-primary{background:var(--gradient-blue);color:#fff;box-shadow:var(--shadow-blue)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px #3370ff66}.btn-secondary{background:transparent;color:var(--primary-blue);border:1px solid var(--primary-blue)}.btn-secondary:hover{background:var(--primary-blue);color:#fff}.card{background:var(--bg-card);border-radius:24px;padding:2.5rem;border:1px solid var(--border-color);transition:all .4s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm)}.card:hover{transform:translateY(-8px);border-color:var(--primary-blue);box-shadow:var(--shadow-blue)}.image-container{position:relative;overflow:hidden;border-radius:16px;background:var(--bg-secondary)}.image-container img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.4,0,.2,1)}.image-container:hover img{transform:scale(1.05)}.image-placeholder{width:100%;height:100%;background:var(--gradient-light-blue);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:.9rem;border:2px dashed var(--border-color)}html{scroll-behavior:smooth}::selection{background:var(--primary-blue);color:#fff}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--primary-blue);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-blue)}@media(max-width:1024px){.container{padding:0 32px}.section{padding:100px 0}.section-title{font-size:2.75rem}}@media(max-width:768px){.container{padding:0 24px}.section{padding:80px 0}.section-title{font-size:2rem}.section-subtitle{font-size:1.1rem}.btn{padding:14px 32px;font-size:1.05rem}.card{padding:2rem}}