:root{--bg:#0b1220;--card:#131c2e;--fg:#f2f5fa;--mute:#9fb0c8;--accent:#2fd0a0;--accent-fg:#04130d;--bad:#ff6b6b;--warn:#ffd166;--line:#27344d}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.4 system-ui,sans-serif;transition:background .15s}
body.flash{background:#0f3d2e}
main{max-width:640px;margin:0 auto;padding:12px 16px 40px}
h1{font-size:1.25rem;margin:8px 0 12px}
h1 small{color:var(--mute);font-weight:400;font-size:.8rem}
h2{font-size:1rem;margin:0 0 8px;color:var(--mute);text-transform:uppercase;letter-spacing:.04em}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:0}
dt{color:var(--mute)}dd{margin:0;word-break:break-word}
.small{font-size:.85rem;color:var(--mute)}
.msg{background:#3a1b1b;border:1px solid var(--bad);padding:10px;border-radius:8px;margin:10px 0 0}
.warn{color:var(--warn);font-weight:600;margin:0 0 8px}
.uid{font:700 2rem/1.1 ui-monospace,monospace;letter-spacing:.03em;word-break:break-all;margin:4px 0}
.records{margin-top:8px}
.rec{background:#0e1626;border:1px solid var(--line);border-radius:8px;padding:8px;margin-top:6px;font-size:.9rem;word-break:break-all}
.rec b{color:var(--accent)}
.row{display:flex;gap:10px;margin:8px 0}
.row>button{flex:1}
button{min-height:52px;padding:0 14px;font:600 1rem system-ui,sans-serif;color:var(--fg);background:#22304a;border:2px solid var(--line);border-radius:10px}
button.primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
button:disabled{opacity:.4}
button:focus-visible,input:focus-visible{outline:3px solid var(--warn);outline-offset:2px}
input[type=text],input[type=number],textarea{width:100%;min-height:48px;padding:8px 12px;font:1rem system-ui,sans-serif;color:var(--fg);background:#0e1626;border:2px solid var(--line);border-radius:10px}
input[type=number]{width:96px}
textarea{font:.8rem ui-monospace,monospace;margin-top:8px}
.check,.inline{display:flex;align-items:center;gap:10px;min-height:48px}
.check input{width:24px;height:24px}
.stats{margin:6px 0 0;white-space:pre-wrap;font:.85rem ui-monospace,monospace;color:var(--fg)}
.log{list-style:none;margin:0;padding:0;max-height:50vh;overflow:auto;font:.8rem ui-monospace,monospace}
.log li{border-top:1px solid var(--line);padding:6px 0;word-break:break-word}
.log .t{color:var(--mute)}
.log .k{font-weight:700}
.k-reading{color:var(--accent)}.k-readingerror,.k-write-error,.k-scan-error{color:var(--bad)}.k-cycle{color:var(--warn)}
code{background:#0e1626;padding:1px 4px;border-radius:4px}