:root {
  --paper: #f7f6f4;
  --card: #ffffff;
  --ink: #141414;
  --muted: #6f6d6a;
  --line: rgba(20, 20, 20, 0.12);
  --rose: #ff507d;
  --rose-deep: #d33d69;
  --ok: #1f8a4c;
  --err: #c0362c;
  --sans: "Manrope", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --r: 14px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.top, main, footer {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 16px;
}

.top {
  display: flex;
  gap: 18px;
  align-items: center;
  padding-top: 36px;
  padding-bottom: 20px;
}

.logo { width: 56px; height: 56px; flex: none; }
h1 { margin: 0; font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; }
.sub { margin: 2px 0 0; color: var(--muted); }

.banner {
  max-width: 52rem;
  margin: 0 auto 16px;
  padding: 12px 16px;
  background: #fff0f3;
  border: 1px solid var(--rose);
  border-radius: var(--r);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 20px;
  margin-bottom: 16px;
}

h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.n {
  display: inline-grid;
  place-items: center;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-size: 0.85rem;
}

.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row.between { justify-content: space-between; align-items: center; }
.row.between h2 { margin: 0; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field span { font-size: 0.85rem; color: var(--muted); }
.field.narrow { width: 140px; }
.field.grow { flex: 1; min-width: 200px; }

input[type=number], input[type=text], select {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  width: 100%;
}

input[type=number] { font-family: var(--mono); font-size: 1.2rem; }
input:focus, select:focus { outline: 2px solid var(--rose); outline-offset: 1px; }

.check { display: flex; gap: 8px; align-items: center; color: var(--muted); }

.btn {
  font: inherit;
  font-weight: 700;
  border-radius: 999px;
  padding: 11px 22px;
  cursor: pointer;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
}

.btn.primary { background: var(--rose); border-color: var(--rose); color: #fff; min-width: 160px; }
.btn.primary:hover:not(:disabled) { background: var(--rose-deep); border-color: var(--rose-deep); }
.btn.ghost:hover:not(:disabled) { background: var(--paper); }
.btn.small { padding: 6px 14px; font-size: 0.85rem; }
.btn:disabled { opacity: 0.4; cursor: default; }

.hint { margin: 8px 0 0; color: var(--muted); font-size: 0.9rem; }

.progress { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.bar { flex: 1; height: 8px; border-radius: 4px; background: var(--paper); overflow: hidden; }
#bar { height: 100%; width: 0; background: var(--rose); transition: width 0.15s; }
#stage { font-size: 0.85rem; color: var(--muted); min-width: 140px; }

.result {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 10px;
  font-weight: 600;
}
.result.ok { background: #eaf6ef; color: var(--ok); }
.result.err { background: #fbeceb; color: var(--err); }

.log { margin-top: 14px; }
.log summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }
.log pre {
  font-family: var(--mono);
  font-size: 0.75rem;
  background: var(--paper);
  border-radius: 10px;
  padding: 10px;
  max-height: 260px;
  overflow: auto;
  white-space: pre-wrap;
}

.tablewrap { overflow-x: auto; margin-top: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
td.mono { font-family: var(--mono); }

footer { color: var(--muted); font-size: 0.8rem; padding-bottom: 40px; }
footer a { color: inherit; }