:root{--bg: #f4f7ec;--panel: #ffffff;--ink: #1b2417;--muted: #6b7768;--line: #e2e8d5;--accent: #7bc043;--accent2: #5a9e2f;--warn: #b4762a;--err: #c0392b;--ok: #3a8a2e}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink)}.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.mono{font-family:JetBrains Mono,ui-monospace,monospace;font-size:12px;word-break:break-all}.sidebar{background:var(--panel);border-right:1px solid var(--line);padding:18px 14px}.brand{font-size:18px;font-weight:800;color:var(--accent2)}.chainsel{margin:14px 0;padding:9px 12px;border:1px solid var(--line);border-radius:10px;font-size:13px;background:#fbfdf6}nav{display:flex;flex-direction:column;gap:3px}.navitem{text-align:left;background:none;border:0;padding:9px 12px;border-radius:9px;font-size:14px;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center}.navitem:hover{background:#f0f5e6}.navitem.on{background:#eaf5dd;color:var(--accent2);font-weight:700}.navitem.soon{color:var(--muted);cursor:default}.tag{font-size:9.5px;background:#eef2e6;color:var(--muted);padding:2px 7px;border-radius:999px}.main{display:flex;flex-direction:column}.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 26px;border-bottom:1px solid var(--line)}.crumb{font-size:13px;color:var(--muted)}.content{padding:30px 26px;display:flex;justify-content:center}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;width:100%;max-width:620px}h1{font-size:24px;margin:0 0 4px}.sub{color:var(--muted);font-size:13.5px;margin:0 0 18px}label{display:block;font-size:13px;font-weight:600;margin-bottom:14px}input{display:block;width:100%;margin-top:6px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;font-weight:400;background:#fbfdf6}input:focus{outline:none;border-color:var(--accent)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.toggles{display:flex;flex-direction:column;gap:8px;margin:6px 0 16px}.tg{display:flex;align-items:center;gap:8px;font-weight:600}.tg input{width:auto;margin:0}.tg span{color:var(--muted);font-weight:400;font-size:12px}.fee{font-size:13px;color:var(--muted);margin-bottom:14px}.btn{border:1px solid var(--line);background:#fff;color:var(--ink);padding:9px 14px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer}.btn:hover{background:#f6faf0}.btn.primary{background:linear-gradient(180deg,var(--accent),var(--accent2));color:#fff;border:0}.btn.primary:disabled{opacity:.5;cursor:not-allowed}.btn.warn{background:#fdf1e3;color:var(--warn);border-color:#ecd7bb}.btn.lg{width:100%;padding:13px;font-size:15px;margin-top:4px}.row{display:flex;gap:10px;align-items:center}.pill{font-size:12px;background:#eaf5dd;color:var(--accent2);padding:5px 10px;border-radius:999px;font-weight:600}.banner{margin-top:14px;padding:11px 13px;border-radius:10px;font-size:13px}.banner.warn{background:#fdf3e5;color:var(--warn)}.banner.err{background:#fdecea;color:var(--err)}.banner.ok{background:#eaf6e4;color:var(--ok)}.banner code{background:#ffffff80;padding:1px 4px;border-radius:4px}.result{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}.kv{display:flex;justify-content:space-between;gap:16px;padding:7px 0;border-bottom:1px solid var(--line);font-size:13.5px}.kv span:first-child{color:var(--muted)}.flags{display:flex;flex-direction:column;gap:6px;margin-top:12px}.flag{font-size:13px;font-weight:600}.flag.g{color:var(--ok)}.flag.b{color:var(--warn)}@media (max-width: 720px){.app{grid-template-columns:1fr}.sidebar{display:none}}