:root{--bg:#07111f;--panel:#0e1b2f;--soft:#14243b;--text:#eef7ff;--muted:#a9bad2;--cyan:#66e5ff;--pink:#ff6fae;--gold:#ffd166;--line:rgba(255,255,255,.12);--radius:24px;--shadow:0 24px 80px rgba(0,0,0,.35)}*{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(102,229,255,.18),transparent 32%),radial-gradient(circle at 90% 15%,rgba(255,111,174,.16),transparent 34%),var(--bg);color:var(--text);line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px clamp(18px,4vw,64px);background:rgba(7,17,31,.78);backdrop-filter:blur(18px);border-bottom:1px solid 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