:root{--canvas: #f4f6f6;--surface: #ffffff;--surface-soft: #f9fbfb;--line: #dfe7e5;--line-strong: #c7d2cf;--ink: #15201f;--muted: #63716f;--faint: #8d9996;--accent: #0b8f82;--accent-dark: #066b62;--accent-soft: #e6f6f3;--green: #0f9f6e;--amber: #b7791f;--red: #c93d4b;--red-soft: #ffe8eb;--shadow: 0 1px 2px rgb(10 25 23 / .04), 0 10px 26px rgb(10 25 23 / .05)}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:var(--canvas);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased;overflow-x:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer}.mail-app{min-height:100vh;display:grid;grid-template-columns:228px minmax(0,1fr);min-width:0}.rail{position:sticky;top:0;height:100vh;background:var(--surface);border-right:1px solid 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