:root{--night:#0B1526;--tech:#17365D;--gold:#C99428;--gold-light:#E2B95A;--silver:#B8BDC7;--bg:#F4F6F9;--text:#202938;--muted:#5D6675;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif}h1,h2,h3,.brand{font-family:Manrope,Arial,sans-serif}.app-shell{display:flex;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;padding:24px 16px;background:linear-gradient(180deg,var(--night),#101e33);color:#fff;z-index:20}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-size:22px;font-weight:700;margin:0 10px 28px}.brand-mark{display:inline-grid;place-items:center;width:38px;height:38px;border:1px solid var(--gold);color:var(--gold);font-family:Manrope;font-weight:700;border-radius:10px}.sidebar .nav-link{color:#bfc8d5;border-radius:8px;padding:10px 12px;margin:2px 0;font-size:14px}.sidebar .nav-link:hover,.sidebar 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