:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --line:#e2e8f0;
  --line2:#cbd5e1;
  --primary:#0b5fff;
  --primary2:#094ad1;
  --danger:#b91c1c;
  --success:#15803d;
  --shadow:0 1px 2px rgba(15,23,42,.05),0 10px 22px rgba(15,23,42,.06);
  --radius:8px;
  --pad:20px;
  --tap:44px;
}
*{box-sizing:border-box}
html,body{min-height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.app{min-height:100%;display:flex;flex-direction:column}
.topbar{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(246,248,251,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(10px);
}
.topbar__inner{
  max-width:1040px;
  margin:0 auto;
  padding:12px 14px;
  display:flex;
  justify-content:space-between;
  gap:12px;
}
.brand{min-width:0}
.brand__title{font-size:16.4px;line-height:1.25}
.brand__sub{font-size:12.8px;line-height:1.35;color:var(--muted);margin-top:3px}
.main{width:100%;max-width:1040px;margin:0 auto;padding:18px 14px 30px}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:var(--pad);
  margin:14px 0;
}
.card--narrow{max-width:520px;margin:18px auto}
.topbar__nav{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:36px;
  padding:6px 10px;
  border-radius:8px;
  border:1px solid transparent;
  color:var(--text);
}
.link:hover{border-color:var(--line);background:#fff;text-decoration:none}
.h1{margin:0 0 12px;font-size:20px;line-height:1.25}
.h2{margin:0 0 12px;font-size:16.8px;line-height:1.25}
.muted,.hint{color:var(--muted);font-size:13.8px;line-height:1.45}
.spacer{height:16px}
.grid{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:760px){
  .grid--2{grid-template-columns:1fr 1fr}
  .field--full{grid-column:1/-1}
}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.label{font-size:15px;line-height:1.35;color:var(--text)}
.input,.textarea,.select{
  width:100%;
  min-height:var(--tap);
  padding:10px 12px;
  border:1px solid var(--line2);
  border-radius:8px;
  background:#fff;
  color:var(--text);
  outline:none;
  font-size:16px;
}
.textarea{min-height:104px;resize:vertical}
.input:focus,.textarea:focus,.select:focus{
  border-color:rgba(11,95,255,.65);
  box-shadow:0 0 0 3px rgba(11,95,255,.14);
}
.toggle{
  min-height:var(--tap);
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--line);
  border-radius:8px;
  padding:10px 12px;
  background:#fbfdff;
  cursor:pointer;
}
.toggle__input{position:absolute;opacity:0;pointer-events:none}
.toggle__track{width:48px;height:28px;border-radius:999px;border:1px solid var(--line2);background:#fff;position:relative;flex:0 0 auto}
.toggle__thumb{width:22px;height:22px;border-radius:999px;background:#cbd5e1;position:absolute;top:2px;left:3px;transition:transform .16s ease,background .16s ease}
.toggle input:checked + .toggle__track .toggle__thumb{transform:translateX(18px);background:var(--primary)}
.toggle__text{font-size:14.4px;line-height:1.35}
.check-grid{display:grid;grid-template-columns:1fr;gap:10px;margin:14px 0}
@media (min-width:760px){.check-grid{grid-template-columns:1fr 1fr}}
.check{
  display:flex;
  align-items:flex-start;
  gap:10px;
  border:1px solid var(--line);
  border-radius:8px;
  background:#fbfdff;
  padding:10px 12px;
  font-size:14.3px;
  line-height:1.4;
}
.check input{margin-top:3px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.btn{
  min-height:var(--tap);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 14px;
  border-radius:8px;
  border:1px solid var(--line2);
  background:#fff;
  color:var(--text);
  cursor:pointer;
  font-size:16px;
  line-height:1.25;
  text-align:center;
}
.btn--primary{background:var(--primary);border-color:transparent;color:#fff}
.btn--primary:hover{background:var(--primary2);text-decoration:none}
.btn--secondary{background:#e2e8f0;border-color:transparent;color:#0f172a}
.btn--secondary:hover{background:#cbd5e1;text-decoration:none}
.btn--danger{background:#7f1d1d;border-color:transparent;color:#fff}
.btn--danger:hover{background:#991b1b;text-decoration:none}
.btn--wide{width:100%}
.alert{
  border:1px solid var(--line);
  border-radius:8px;
  padding:12px;
  font-size:14px;
  line-height:1.45;
}
.alert--error{background:#fff1f2;border-color:#fecdd3;color:#7f1d1d}
.alert--success{background:#ecfdf5;border-color:#bbf7d0;color:#14532d}
.alert--notice{background:#f8fafc;border-color:#dbe3ee;color:#334155}
.kv-list{display:grid;grid-template-columns:1fr;gap:10px}
@media (min-width:760px){.kv-list{grid-template-columns:1fr 1fr}}
.kv{border:1px solid var(--line);border-radius:8px;background:#fbfdff;padding:10px 12px;min-width:0}
.kv__k{font-size:12.6px;color:var(--muted)}
.kv__v{margin-top:2px;font-size:14.6px;line-height:1.35;overflow-wrap:anywhere}
@media (max-width:480px){
  .main{padding:12px 10px 24px}
  .card{padding:16px;margin:10px 0}
  .topbar__inner{padding:10px}
}