:root{--ink:#172034;--muted:#697289;--paper:#f7f3eb;--cream:#ece5d8;--brand-deep:#101a5c;--brand-bright:#45f3ff;--orange:var(--brand-deep);--orange-dark:var(--brand-deep);--green:#24936a;--blue:var(--brand-deep)}*{box-sizing:border-box}html{background:var(--paper)}body{background:radial-gradient(circle at 12% 3%, #45f3ff1f, transparent 27rem), radial-gradient(circle at 91% 24%, #101a5c17, transparent 25rem), linear-gradient(90deg, #17203406 1px, transparent 1px), linear-gradient(#17203406 1px, transparent 1px), var(--paper);color:var(--ink);background-size:auto,auto,32px 32px,32px 32px,auto;margin:0;font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif}button{font:inherit}button:focus-visible,summary:focus-visible{outline-offset:3px;outline:3px solid #45f3ff80}.shell{flex-direction:column;min-height:100vh;display:flex}.topbar{border-bottom:1px solid #1720341f;justify-content:space-between;align-items:center;width:min(1180px,100% - 40px);margin:0 auto;padding:24px 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