:root{--bg:#0F141C;--nav:#111823;--card:#171F2B;--card2:#1D2735;--section:#121A25;--title:#F4F7FB;--orange:#FF7A1A;--gold:#FFB13B;--deep:#FF5A12;--text:#E8EEF6;--muted:#AEB9C8;--soft:#7F8B9B;--line:rgba(255,255,255,0.08);--shadow:0 18px 44px rgba(0,0,0,0.34);--btn:linear-gradient(135deg,#FFB13B 0%,#FF7A1A 58%,#FF5A12 100%)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.72;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.container{width:min(1180px,calc(100% - 36px));margin:0 auto}.site-header{position:fixed;left:0;top:0;right:0;background:var(--nav);box-shadow:0 10px 30px 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