:root{--bg: #0b1320;--panel: #111c2e;--panel-2: #16243a;--line: #22324a;--text: #e6edf7;--muted: #93a4bd;--blue: #5aa2ff;--red: #ff6b6b;--white-cell: #e9eef5;--focus: #9cc6ff;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5}.page{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 24px;border-bottom:1px solid var(--line)}.wordmark{font-weight:650;letter-spacing:.01em}.marking{color:var(--muted);font-size:13px}.layout{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:56px 24px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:56px;align-items:start}h1{font-size:44px;line-height:1.1;margin:0 0 20px;letter-spacing:-.01em}h2{font-size:18px;margin:0 0 16px}.lede{font-size:19px;color:var(--text)}.intro p{color:var(--muted);max-width:56ch}.intro .lede{color:var(--text)}.status{margin-top:32px;padding-top:20px;border-top:1px solid var(--line)}.status h2{font-size:15px;margin-bottom:4px}.status p{margin:0;font-size:15px}.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:24px}.field{display:block;margin:0 0 18px;padding:0;border:0}.field>span,.field>legend{display:block;font-size:13px;color:var(--muted);margin-bottom:6px;padding:0}input,select{width:100%;font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:10px 12px}input::placeholder{color:#5f708a}input:focus-visible,select:focus-visible,button:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.segmented{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:6px;overflow:hidden}.seg{font:inherit;font-size:15px;color:var(--muted);background:var(--panel-2);border:0;border-right:1px solid var(--line);padding:9px 6px;cursor:pointer}.seg:last-child{border-right:0}.seg.on{color:#0b1320;font-weight:600}.seg-blue.on{background:var(--blue)}.seg-red.on{background:var(--red)}.seg-white.on{background:var(--white-cell)}.hint{margin:8px 0 0;font-size:13px;color:var(--muted)}.primary{width:100%;font:inherit;font-weight:600;color:#0b1320;background:var(--text);border:0;border-radius:6px;padding:11px 16px;cursor:pointer}.primary:disabled{opacity:.45;cursor:not-allowed}.message{margin:14px 0 0;font-size:14px;color:var(--muted)}.footer{padding:16px 24px;border-top:1px solid var(--line);color:#5f708a;font-size:12px}.toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:10px 16px;font-size:14px}@media(max-width:820px){.layout{grid-template-columns:1fr;gap:32px;padding:32px 16px}.topbar,.footer{padding-left:16px;padding-right:16px}.marking{display:none}h1{font-size:34px}}.status .preview-link{margin-top:12px}.preview-link a{color:var(--blue);text-decoration:none;border-bottom:1px solid rgba(90,162,255,.35)}.preview-link a:hover{border-bottom-color:var(--blue)}.join-column{display:grid;gap:16px;align-content:start}.rejoin p{margin:0 0 16px;color:var(--muted)}.rejoin-actions{display:grid;grid-template-columns:1fr auto;gap:10px}a.primary{display:block;text-align:center;text-decoration:none}.secondary{font:inherit;font-weight:600;color:var(--text);background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:11px 16px;cursor:pointer}