:root{--bg:#f6f7f9;--card:#fff;--ink:#1b1f24;--muted:#5f6b7a;--line:#e3e7ec;--brand:#0b5fff;--brand-ink:#fff;--ok:#1a7f37;--warn:#b35c00;--bad:#c92a2a;--soft:#eef3ff;--r:12px;--shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.1)}
@media (prefers-color-scheme:dark){:root{--bg:#0f1217;--card:#161b22;--ink:#e6edf3;--muted:#9aa7b4;--line:#2a313b;--soft:#15213a;--shadow:none}}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
header.top{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
header.top .in{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:22px;padding:10px 16px}
header.top .brand{font-weight:700;letter-spacing:.2px;display:flex;align-items:center;gap:8px}
header.top .brand span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--brand);color:#fff;font-size:14px}
header.top nav{display:flex;gap:16px;flex:1}header.top nav a{color:var(--ink);opacity:.8}header.top nav a.active{color:var(--brand);opacity:1;font-weight:600}
header.top .me{color:var(--muted);font-size:13px}
main{max-width:1180px;margin:0 auto;padding:24px 16px 60px}
h1{font-size:24px;margin:0 0 16px}h2{font-size:17px;margin:24px 0 10px}h3{font-size:15px;margin:16px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.grid{display:grid;gap:16px}.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}@media(max-width:900px){.g2,.g3{grid-template-columns:1fr}}
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px;padding:8px 14px;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{border-color:#b9c3d0}.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--bad);border-color:#f1b5b5}.btn.sm{padding:5px 10px;font-size:13px}.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn.big{padding:14px 22px;font-size:17px;border-radius:12px}
input,select,textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:9px;padding:9px 11px;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid #bcd0ff;border-color:var(--brand)}
label{display:block;font-size:13px;color:var(--muted);font-weight:600;margin:10px 0 4px}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-weight:600;font-size:12.5px;text-transform:uppercase;letter-spacing:.3px}
tr.click{cursor:pointer}tr.click:hover td{background:var(--soft)}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;border:1px solid transparent}
.pill.draft{background:#eef1f5;color:#4a5567}.pill.sent{background:#fff4e0;color:var(--warn)}.pill.completed,.pill.signed{background:#e6f6ea;color:var(--ok)}.pill.declined,.pill.voided{background:#fdecec;color:var(--bad)}.pill.pending{background:#eef3ff;color:var(--brand)}
.muted{color:var(--muted)}.small{font-size:13px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;word-break:break-all}
.alert{padding:10px 14px;border-radius:9px;border:1px solid;margin:10px 0}.alert.err{background:#fdecec;border-color:#f1b5b5;color:var(--bad)}.alert.ok{background:#e6f6ea;border-color:#b7e1c1;color:var(--ok)}.alert.info{background:var(--soft);border-color:#bcd0ff;color:var(--ink)}
.auth{max-width:420px;margin:60px auto}.auth h1{text-align:center}
.steps{display:flex;gap:8px;margin:8px 0 18px}.steps div{flex:1;height:5px;border-radius:3px;background:var(--line)}.steps div.on{background:var(--brand)}
.drop{border:2px dashed var(--line);border-radius:var(--r);padding:28px;text-align:center;color:var(--muted);cursor:pointer}.drop.over{border-color:var(--brand);background:var(--soft)}
.preview{border:1px solid var(--line);border-radius:8px;background:#fff;max-width:100%;display:block;margin:8px 0}
.sign-layout{display:grid;grid-template-columns:1fr 380px;gap:20px}@media(max-width:980px){.sign-layout{grid-template-columns:1fr}}
.sticky{position:sticky;top:70px}
.kv{display:grid;grid-template-columns:140px 1fr;gap:4px 12px;font-size:14px}.kv dt{color:var(--muted)}.kv dd{margin:0}
.timeline{list-style:none;padding:0;margin:0}.timeline li{display:grid;grid-template-columns:150px 1fr;gap:10px;padding:6px 0;border-bottom:1px dashed var(--line);font-size:13px}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:12px}.tabs button{background:none;border:0;padding:8px 12px;font:inherit;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;cursor:pointer}.tabs button.on{color:var(--brand);border-color:var(--brand)}
code.secret{font-size:16px;letter-spacing:2px;background:var(--soft);padding:6px 10px;border-radius:8px;display:inline-block}
.empty{padding:26px;text-align:center;color:var(--muted)}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:14px}.chk input{width:auto;margin-top:4px}
@media(max-width:720px){
  header.top .in{gap:8px 14px;flex-wrap:wrap;padding:8px 12px}
  header.top .brand{flex:1;min-width:0}
  header.top nav{order:3;flex-basis:100%;gap:14px;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px}
  header.top nav a{white-space:nowrap}
  header.top .me{font-size:12px;text-align:right}
  main{padding:16px 12px 48px}
  h1{font-size:21px}h2{font-size:16px}
  .card{padding:14px}
  table{font-size:13px}th,td{padding:8px 7px}th{font-size:11.5px}
  .kv{grid-template-columns:1fr;gap:2px 0}.kv dt{margin-top:7px}
  .timeline li{grid-template-columns:1fr;gap:2px;padding:8px 0}
  .btn.big{width:100%;justify-content:center}
  .sticky{position:static}
  .auth{margin:28px auto}
}