:root{--bg:#F7F4FF;--paper:#fff;--soft:#EEF2FF;--ink:#1B1340;--text:#2F2A4A;--muted:#5B5678;--faint:#8B86A3;--purple:#7C3AED;--light:#A78BFA;--teal:#14B8A6;--coral:#F97316;--pink:#E11D48;--amber:#F59E0B;--indigo:#312E81;--line:rgba(124,58,237,.14);--shadow:0 16px 40px rgba(49,46,129,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.72;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}.site-header{position:relative;z-index:50}.nav-island{position:fixed;top:16px;left:50%;transform:translateX(-50%);width:min(1120px,calc(100% - 32px));height:68px;padding:8px 10px;background:rgba(255,255,255,.92);border:1px solid var(--line);box-shadow:var(--shadow);backdrop-filter:blur(16px);border-radius:24px;display:grid;grid-template-columns:1fr 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