:root{--brand:#1d513b;--text:#1d3028;--muted:#607168;--canvas:#f5f6f2;--surface:#fff;--border:#dce3db;--input:#c6d1c7;--soft:#eaf2e8}*{box-sizing:border-box}html{background:var(--canvas)}body{color:var(--text);background:var(--canvas);margin:0;font-family:Noto Sans Thai,Leelawadee UI,Tahoma,sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.app-shell{min-height:100vh}.sidebar{background:var(--brand);color:#fff;flex-direction:column;width:230px;padding:28px 16px;display:flex;position:fixed;inset:0 auto 0 0}.brand{grid-template-columns:38px 1fr;align-items:center;column-gap:9px;margin:0 10px 42px;line-height:1.2;display:grid}.brand span{width:38px;height:38px;color:var(--brand);background:#d1e7a1;border-radius:12px;grid-row:span 2;place-items:center;font-size:24px;font-weight:700;display:grid}.brand b{font-size:20px}.brand small{letter-spacing:.12em;opacity:.7;font-size:10px}.sidebar 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