:root{--bg:#f5f6f8;--card:#fff;--ink:#1d2433;--muted:#667085;--line:#e3e6eb;--accent:#2f6fde;--green:#1f9d55;--red:#d64545;--yellow:#c98a00}
*{box-sizing:border-box}
body{margin:0;font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);padding-bottom:env(safe-area-inset-bottom)}
a{color:var(--accent)}
.top{position:sticky;top:0;z-index:5;display:flex;gap:10px;align-items:center;justify-content:space-between;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));background:#fff;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);text-decoration:none}.brand.big{font-size:24px;margin-bottom:8px}
.logo{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--accent);color:#fff;font-weight:700}
nav.tabsnav{display:flex;gap:4px;overflow-x:auto;background:#fff;border-bottom:1px solid var(--line);padding:0 8px;position:sticky;top:51px;z-index:4}
nav.tabsnav a{flex:0 0 auto;padding:10px 12px;text-decoration:none;color:var(--muted);font-weight:600;font-size:15px;border-bottom:3px solid transparent}
nav.tabsnav a.on{color:var(--accent);border-color:var(--accent)}
main{max-width:980px;margin:0 auto;padding:14px}
.login{max-width:440px;padding-top:10vh}
h1{font-size:22px;margin:6px 0 10px}h2{font-size:18px;margin:18px 0 8px}h3{font-size:16px;margin:0 0 4px}
.muted{color:var(--muted)}.small{font-size:13px}
.box{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin:10px 0}
.btn{display:inline-block;border:0;border-radius:10px;padding:9px 14px;font:inherit;font-weight:600;background:var(--accent);color:#fff;cursor:pointer;text-decoration:none;margin:4px 6px 4px 0}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}.btn.small{padding:5px 10px;font-size:14px}
.btn.green{background:var(--green)}.btn.red{background:var(--red)}
.btn:disabled{opacity:.5;cursor:default}
textarea,input,select{width:100%;font:inherit;padding:9px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input[type=checkbox],input[type=radio]{width:auto;margin-right:6px}
textarea{min-height:100px;resize:vertical}
label{display:block;font-weight:600;margin:10px 0 4px}
label.inline{display:flex;align-items:center;font-weight:400}
.err{background:#fde8e8;color:#9b1c1c;border-radius:10px;padding:10px;margin:10px 0}
.ok{background:#e6f6ec;color:#14532d;border-radius:10px;padding:10px;margin:10px 0}
.warn{background:#fff6dc;color:#5c4300;border-radius:10px;padding:10px;margin:10px 0}
.pill{display:inline-block;border-radius:999px;padding:1px 9px;font-size:12px;font-weight:600;background:#eef2f7;color:var(--ink)}
.pill.green{background:#e6f6ec;color:#14532d}.pill.red{background:#fde8e8;color:#9b1c1c}.pill.yellow{background:#fff6dc;color:#5c4300}.pill.blue{background:#e8f0fe;color:#1e40af}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.row.between{justify-content:space-between}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}@media(max-width:640px){.grid2{grid-template-columns:1fr}}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}.stat b{font-size:22px;display:block}
.board{display:flex;gap:10px;overflow-x:auto;padding-bottom:10px;align-items:flex-start}
.col{flex:0 0 230px;background:#eceff3;border-radius:12px;padding:8px;min-height:120px}.col h3{font-size:14px;display:flex;justify-content:space-between}
.col.drop{outline:2px dashed var(--accent)}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;margin:6px 0;cursor:pointer}
.card select{margin-top:6px;padding:4px;font-size:13px}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);font-size:15px}
.tablewrap{overflow-x:auto}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}.seg button{border:0;background:#fff;padding:7px 12px;font:inherit;cursor:pointer}.seg button.on{background:var(--ink);color:#fff}
.bar{height:12px;background:#e5e7eb;border-radius:999px;overflow:hidden}.bar i{display:block;height:100%;background:var(--green)}
.log{border-left:3px solid var(--line);padding:4px 10px;margin:6px 0}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;z-index:9;max-width:90vw}
.post{white-space:pre-wrap}
.sig{border:1px dashed var(--muted);border-radius:10px;background:#fff;touch-action:none;width:100%;height:160px}
.video{position:relative;padding-top:56.25%}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:10px}
.sample{border:2px solid var(--yellow);background:#fffbea;border-radius:10px;padding:12px;white-space:pre-wrap}
.step{display:flex;gap:8px;align-items:center;padding:6px 0;border-bottom:1px solid var(--line)}
.hidden{display:none}
dialog{border:0;border-radius:14px;max-width:560px;width:94vw;padding:16px}dialog::backdrop{background:rgba(0,0,0,.35)}