:root{--ink:#153448;--muted:#6a7f8b;--teal:#008b91;--soft:#e7f5f3;--line:#e1e9ec;--bg:#f5f8f9;--radius:16px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 'Segoe UI',sans-serif}aside{position:fixed;top:0;width:248px;background:#fff;height:100vh;border-right:1px solid var(--line);padding:32px 22px;display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;font-size:34px;color:var(--teal);text-decoration:none}.brand span{font-size:17px;font-weight:700;line-height:1.3}.brand small{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:5px}.nav{display:grid;gap:8px;margin-top:52px}.nav button{background:none;color:var(--muted);text-align:left;padding:14px 18px;font-weight:500}.nav button.active{background:var(--soft);color:#006d72}.aside-foot{margin-top:auto;font-size:13px;color:#3a5969}.aside-foot small{display:block;color:var(--muted);margin:6px 0 0 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