:root{
  --bg:#faf9f7; --surface:#fff; --ink:#1b1a18; --muted:#6d6961;
  --line:#e8e4dd; --accent:#1f6feb; --accent-ink:#fff; --ok:#0f7b4f; --bad:#b42318;
  --radius:16px; --shadow:0 1px 2px rgba(27,26,24,.05), 0 12px 32px rgba(27,26,24,.06);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
.hidden{display:none!important}
.muted{color:var(--muted)}
a{color:var(--accent)}
.shell{display:grid;grid-template-columns:248px 1fr;min-height:100vh}
.side{background:var(--surface);border-right:1px solid var(--line);padding:22px 16px;display:flex;flex-direction:column;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.02em}
.dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(31,111,235,.12)}
.nav{display:flex;flex-direction:column;gap:2px}
.nav button{border:0;background:transparent;text-align:left;padding:9px 11px;border-radius:10px;color:var(--muted);font:inherit;cursor:pointer;transition:background .15s,color .15s}
.nav button:hover{background:#f4f1ec;color:var(--ink)}
.nav button.active{background:#eef4ff;color:var(--accent);font-weight:600}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:8px;font-size:12px}
.badge{display:inline-block;background:#eaf6ef;color:var(--ok);border-radius:999px;padding:2px 9px;font-weight:600;width:max-content}
.badge.new{background:#fff4e5;color:#a15c00}
.main{padding:40px 48px;max-width:1080px}
.hero h1{font-size:40px;line-height:1.08;letter-spacing:-.03em;margin:0 0 12px}
.hero p{max-width:46ch;margin:0 0 28px}
h1{font-size:26px;letter-spacing:-.02em;margin:0 0 4px}
h2{font-size:17px;margin:0 0 14px;letter-spacing:-.01em}
h3{font-size:13px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin:22px 0 8px}
.top{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:26px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.auth-card{max-width:520px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:14px}
input,select{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:2px solid #cfe0ff;border-color:var(--accent)}
button.primary{background:var(--accent);color:var(--accent-ink);border:0;border-radius:10px;padding:11px 18px;font:inherit;font-weight:600;cursor:pointer}
button.primary:disabled{opacity:.6;cursor:default}
button.primary:hover:not(:disabled){filter:brightness(.95)}
button.ghost{background:#fff;border:1px solid var(--line);border-radius:10px;padding:7px 12px;font:inherit;cursor:pointer}
button.ghost:hover{background:#f7f5f2}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}
.seg{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg.wide{width:100%;margin-bottom:20px}
.seg button{flex:1;border:0;background:#fff;padding:9px 14px;font:inherit;cursor:pointer;color:var(--muted)}
.seg button.active{background:#eef4ff;color:var(--accent);font-weight:600}
.list{display:flex;flex-direction:column;gap:8px;max-height:560px;overflow:auto}
.item{border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;justify-content:space-between;gap:14px;align-items:center}
.item .t{font-weight:600}
.item .s{color:var(--muted);font-size:13px}
.empty{color:var(--muted);padding:14px;border:1px dashed var(--line);border-radius:12px;text-align:center}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;background:#fbfaf8;border:1px solid var(--line);border-radius:12px;padding:14px;overflow:auto;white-space:pre-wrap;max-height:420px}
.error{color:var(--bad);font-size:13px;margin:6px 0;min-height:18px}
.fine{color:var(--muted);font-size:12px;margin:12px 0 0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:18px}
.stat{border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:4px}
.stat span{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em}
.stat b{font-size:16px}
.marks{display:flex;gap:6px;flex-wrap:wrap}
.mark{background:#eef4ff;color:var(--accent);border-radius:8px;padding:2px 8px;font-weight:600;font-size:13px}
.child{display:flex;flex-direction:column;gap:4px;min-width:190px}
.child label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;margin:0}
@media(max-width:880px){
  .shell{grid-template-columns:1fr}
  .side{flex-direction:row;align-items:center;gap:14px;overflow:auto;padding:12px}
  .nav{flex-direction:row}
  .side-foot{display:none}
  .main{padding:22px}
  .grid2{grid-template-columns:1fr}
  .hero h1{font-size:30px}
}

/* a11y */
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 14px;border-radius:0 0 10px 0;z-index:100}
.skip:focus{left:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.nav button[aria-selected="true"]{background:#eef4ff;color:var(--accent);font-weight:600}
[aria-busy="true"]{opacity:.6}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}