:root{--bg:#050816;--panel:#0b1024;--text:#edf4ff;--muted:#9bb2d8;--cyan:#00d9ff;--violet:#8b5cf6;--line:rgba(135,160,255,.22);--glass:rgba(255,255,255,.06)}*{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 70% 0%,rgba(99,102,241,.28),transparent 36%),radial-gradient(circle at 10% 20%,rgba(0,217,255,.18),transparent 30%),var(--bg);color:var(--text);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,92vw);margin:0 auto}.topbar{position:sticky;top:0;z-index:30;background:rgba(5,8,22,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 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