:root{--bg:#f7f7f5;--panel:#fff;--ink:#20211f;--muted:#72736e;--line:#e7e7e2;--soft:#f2f2ee;--accent:#285f52;--accent-soft:#e5f0ed;--danger:#b5443a}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px}button,input,textarea{font:inherit}button{color:inherit}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid #5b9b8a;outline-offset:2px}.splash{height:100vh;display:flex;gap:10px;align-items:center;justify-content:center;color:var(--muted)}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.mail-shell{height:100vh;display:grid;grid-template-columns:240px minmax(340px,440px) minmax(440px,1fr);overflow:hidden}.sidebar{background:#f5f5f2;border-right:1px solid var(--line);padding:18px 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