*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-primary-light:#3b82f6;--color-accent:#10b981;--color-bg-dark:#fff;--color-bg-section:#f8fafc;--color-bg-card:#fff;--color-text-primary:#0f172a;--color-text-secondary:#475569;--color-text-muted:#94a3b8;--color-border:#e2e8f0;--color-gradient-1:linear-gradient(135deg, #2563eb 0%, #10b981 100%);--font-sans:"Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;--max-width:1200px;--nav-height:72px}html{scroll-behavior:smooth;min-width:320px;font-size:16px}body{font-family:var(--font-sans);background-color:var(--color-bg-dark);color:var(--color-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6}::selection{color:var(--color-text-primary);background:#2563eb26}a{color:inherit;text-decoration:none}ul{list-style:none}img{max-width:100%;display:block}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.section{padding:100px 0}.section-label{text-align:center;letter-spacing:3px;text-transform:uppercase;color:var(--color-primary);margin-bottom:20px;font-size:.9rem;font-weight:600;display:inline-block}.section-label:after{content:"";background:var(--color-gradient-1);border-radius:2px;width:calc(100% - 4px);height:3px;margin:4px auto 0;display:block}.section-title{margin-bottom:16px;font-size:2.5rem;font-weight:700;line-height:1.2}.section-subtitle{color:var(--color-text-secondary);max-width:600px;font-size:1.125rem}.btn{cursor:pointer;font-size:1rem;font-weight:600;font-family:var(--font-sans);border:none;border-radius:8px;justify-content:center;align-items:center;padding:14px 32px;transition:all .3s;display:inline-flex}.btn-primary{background:var(--color-gradient-1);color:#fff;box-shadow:0 4px 16px #2563eb40}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px #2563eb59}.btn-outline{color:var(--color-text-primary);border:1px solid var(--color-border);background:0 0}.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary);background:#2563eb0a;transform:translateY(-2px)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.modal-enter-active,.modal-leave-active{transition:opacity .3s}.modal-enter-from,.modal-leave-to{opacity:0}.modal-enter-active .qr-card,.modal-leave-active .qr-card{transition:all .3s}.modal-enter-from .qr-card,.modal-leave-to .qr-card{opacity:0;transform:scale(.9)}@media (width<=768px){:root{--nav-height:60px}.section{padding:60px 0}.section-title{font-size:1.75rem}.section-subtitle{font-size:1rem}}