:root{--bg:#07111f;--panel:#101d31;--card:#13243d;--text:#eef6ff;--muted:#a9bdd6;--line:rgba(255,255,255,.12);--brand:#78f0ff;--accent:#b87cff;--hot:#ffcf6b;--green:#7cffb2}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:radial-gradient(circle at 10% 0%,rgba(120,240,255,.18),transparent 32%),radial-gradient(circle at 90% 8%,rgba(184,124,255,.18),transparent 30%),var(--bg);color:var(--text);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.site-header{position:sticky;top:0;z-index:20;background:rgba(7,17,31,.84);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-wrap{max-width:1180px;margin:auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:22px}.logo{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:.04em;font-size:20px}.logo 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