:root{--bg: #0e1016;--bg-soft: #161a24;--card: #1b202c;--line: #2a3140;--text: #e8ecf4;--muted: #93a0b4;--accent: #6ee7ff}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Sora,Figtree,Noto Sans SC,system-ui,sans-serif}a{color:inherit;text-decoration:none}.app{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#131722,#0e1016);position:sticky;top:0;z-index:10}.brand{font-weight:700;font-size:18px;letter-spacing:.3px}.brand-mark{color:var(--accent);margin-right:6px}.nav{display:flex;gap:20px}.nav a{color:var(--muted);font-size:14px}.nav a:hover{color:var(--text)}.library{padding:28px;max-width:1200px;margin:0 auto;width:100%}.lib-head{display:flex;align-items:baseline;gap:14px;margin-bottom:20px}.lib-head 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