:root{--blue:#1f3b8f;--blue2:#2c56c9;--ink:#1b1f2a;--muted:#5d6575;--line:#dfe3ea;--bg:#f3f5f9;--card:#fff;--red:#b42318;--green:#106b3a}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.4;-webkit-text-size-adjust:100%}.shell{max-width:640px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.top{background:var(--blue);color:#fff;padding:10px 14px 0}.brand{display:flex;gap:10px;align-items:center}.logo{font-size:26px}.brand h1{font-size:20px;margin:0;letter-spacing:.2px}.tag{margin:0;font-size:12.5px;opacity:.85}.tabs{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:2px;gap:2px;position:-webkit-sticky;position:sticky;top:0;z-index:5;background:var(--blue);padding:0 14px;box-shadow:0 2px 6px rgba(0,0,0,.15)}.tabs button{background:transparent;color:#cfd9ff;border:0;border-bottom:3px solid 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