*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #060b14;--color-bg-elevated: #0d1525;--color-bg-card: #111c30;--color-border: rgba(77, 171, 247, .15);--color-text: #e8ecf0;--color-text-muted: #8b9cb3;--color-primary: #0066cc;--color-primary-light: #00a8ff;--color-accent: #4dabf7;--color-silver: #c0c8d4;--font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--header-height: 72px;--section-padding: 100px;--container-width: 1200px}html{scroll-behavior:smooth}body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:100%;max-width:var(--container-width);margin:0 auto;padding:0 24px}.section{padding:var(--section-padding) 0}.section-label{display:inline-block;font-size:13px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--color-accent);margin-bottom:16px}.section-title{font-size:clamp(28px,4vw,40px);font-weight:700;line-height:1.3;margin-bottom:20px;background:linear-gradient(135deg,#fff 0%,var(--color-silver) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-desc{font-size:16px;color:var(--color-text-muted);max-width:680px;line-height:1.8}.btn{display:inline-flex;align-items:center;padding:14px 32px;font-size:15px;font-weight:500;border-radius:8px;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));box-shadow:0 4px 24px #0066cc59}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px #0066cc73}@media (max-width: 768px){:root{--section-padding: 64px;--header-height: 64px}}