:root{--green:#23c36b;--bg:#05080d;--panel:#101923;--panel2:#162231;--white:#fff;--muted:#9ca3af;--border:rgba(255,255,255,.11);--danger:#ef4444}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Arial,Helvetica,sans-serif;background:#000;color:#fff}button,input,select,textarea{font:inherit}.portal-shell{min-height:100vh;display:grid;grid-template-columns:270px 1fr;background:radial-gradient(circle at top right,rgba(35,195,107,.12),transparent 30%),linear-gradient(180deg,#071017,#05080d)}.sidebar{height:100vh;position:sticky;top:0;padding:18px;border-right:1px solid var(--border);background:rgba(5,8,13,.78);display:flex;flex-direction:column;gap:18px}.brand-card{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--border);border-radius:22px;background:rgba(255,255,255,.04)}.brand-card img{width:92px;height:auto}.brand-card strong,.brand-card span{display:block}.brand-card strong{font-size:.98rem}.brand-card 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