:root{--bg:#EEF6FA;--nav:#08263A;--title:#0A3B5A;--blue:#0E88C8;--deep:#075C91;--cyan:#18D4C6;--white:#fff;--text:#1F2D38;--muted:#5E7080;--foot:#061B2B;--shadow:0 14px 36px rgba(7,92,145,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75}a{color:var(--blue);text-decoration:none}img{display:block;max-width:100%}button{font:inherit}.no-scroll{overflow:hidden}.site-header{position:sticky;top:0;z-index:9000;background:var(--nav);box-shadow:0 8px 24px rgba(7,92,145,.18)}.header-inner{max-width:1200px;height:70px;margin:auto;padding:0 20px;display:flex;align-items:center;gap:28px}.site-logo{color:var(--cyan);font-size:25px;font-weight:800;letter-spacing:1px;white-space:nowrap}.nav-core{display:flex;gap:8px;margin:auto}.nav-core a{color:#EAF6FC;background:rgba(255,255,255,.08);padding:8px 14px;border-radius:999px;white-space:nowrap}.nav-core 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