:root{color-scheme:light;--bg:#f5f8fd;--ink:#15213a;--muted:#74829a;--line:#e7edf5;--accent:#4b8cf7;--soft:#ecf4ff;--radius:17px}*{box-sizing:border-box}html{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}body{margin:0}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #8fb8ff;outline-offset:2px}a{color:inherit;text-decoration:none}.app-shell{max-width:1900px;margin:auto}.topbar{min-height:76px;display:flex;align-items:center;gap:24px;padding:14px clamp(16px,3vw,48px);background:#fff;border-bottom:1px solid 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