:root {
  --bg: #f4f4f1;
  --panel: #fff;
  --line: #d4d4ce;
  --text: #141414;
  --muted: #5a5a54;
  --pos: #9a3412;
  --neg: #166534;
  --accent: #1a4d8f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

header {
  margin-bottom: 24px;
}

h1 {
  margin: 0 0 6px;
  font-size: 1.55rem;
  font-weight: 650;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.lead a {
  color: var(--accent);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

button,
label.file-btn {
  font: inherit;
  font-size: 0.88rem;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

button:hover,
label.file-btn:hover {
  border-color: #999;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

input[type=file] {
  display: none;
}

.hint {
  font-size: 0.82rem;
  color: var(--muted);
}

section.panel {
  margin-bottom: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

section.panel h2 {
  margin: 0;
  padding: 12px 16px;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--line);
  background: #fafaf8;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

th,
td {
  padding: 8px 14px;
  text-align: left;
  border-bottom: 1px solid #ecece8;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.pos {
  color: var(--pos);
}

.neg {
  color: var(--neg);
}

.empty {
  padding: 16px;
  color: var(--muted);
  font-size: 0.88rem;
}

.key {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.82rem;
  word-break: break-all;
}

footer {
  margin-top: 28px;
  font-size: 0.8rem;
  color: var(--muted);
}