:root{--bg:#EEF6FA;--nav:#08263A;--title:#0A3B5A;--blue:#0E88C8;--deep:#075C91;--cyan:#18D4C6;--silver:#F8FBFD;--text:#1F2D38;--muted:#5E7080;--soft:#8A9AA8;--line:rgba(14,136,200,.14);--shadow:0 14px 36px rgba(7,92,145,.10);--grad:linear-gradient(135deg,#0E88C8 0%,#075C91 52%,#18D4C6 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","Microsoft YaHei",Arial,sans-serif;line-height:1.75;padding-top:112px;overflow-x:hidden}a{color:var(--blue);text-decoration:none}a:hover{color:var(--deep)}img{max-width:100%;height:auto;display:block}.site-header{position:fixed;top:0;left:0;right:0;background:var(--nav);box-shadow:0 8px 24px rgba(7,92,145,.18);z-index:9000}.top-wrap{max-width:1200px;margin:0 auto;height:68px;display:flex;align-items:center;gap:24px;padding:0 20px}.site-logo{color:var(--cyan);font-weight:800;letter-spacing:1px;font-size:28px;white-space:nowrap}.nav-core{flex:1;display:flex;align-items:center;justify-content:center;gap:10px;min-width:0}.nav-core a{color:#EAF6FC;background:rgba(255,255,255,.08);border-radius:999px;padding:9px 16px;font-size:15px;white-space:nowrap;transition:.2s}.nav-core a:hover,.nav-core 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