:root{--green: #1f7a3d;--green-dark: #14562a;--bg: #f4f6f8;--panel: #ffffff;--border: #dde3ea;--text: #1c2733;--muted: #64748b;--danger: #c0392b;--accent: #2563eb}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--green-dark);color:#fff;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.sidebar .brand{padding:16px;border-bottom:1px solid rgba(255,255,255,.15)}.sidebar .brand-logo{background:#fff;border-radius:8px;padding:10px 12px;display:flex;align-items:center;justify-content:center}.sidebar .brand-logo img{max-width:100%;height:auto;display:block}.sidebar .brand small{display:block;font-weight:400;opacity:.85;font-size:11px;margin-top:8px;text-align:center;color:#fff}.sidebar 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