:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #d1d5db;
  --accent: #0f766e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eef4f8 0%, #f8fafc 100%);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
}

.header h1 {
  margin: 0 0 6px;
}

.header p {
  margin: 0 0 18px;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 14px;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

h3 {
  margin: 14px 0 8px;
  font-size: 0.95rem;
  color: #374151;
}

.row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

label {
  font-size: 0.9rem;
}

input[type="text"],
input[type="file"] {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 9px;
  background: #fff;
}

button {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  padding: 7px 11px;
  cursor: pointer;
  font-size: 0.88rem;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  background: #fff;
}

th,
td {
  border: 1px solid var(--line);
  padding: 6px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f3f4f6;
  font-weight: 600;
}

td input {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 5px 6px;
  font-size: 0.82rem;
}

.table-wrap {
  overflow-x: auto;
}

.status {
  margin-top: 6px;
  font-size: 0.86rem;
  color: #0f172a;
  background: #ecfeff;
  border: 1px solid #a5f3fc;
  border-radius: 6px;
  padding: 8px;
  white-space: pre-line;
}

.hint {
  margin: 4px 0 2px;
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 780px) {
  .container {
    padding: 14px;
  }
}