:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #17202a;
  --muted: #5f6b7a;
  --line: #d8e1ea;
  --brand: #0f8f68;
  --brand-soft: #e8f6f1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  color: var(--text);
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.topbar h1 {
  margin: 0 0 6px;
  font-size: 24px;
}

.topbar p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 12px 24px rgba(40, 58, 80, 0.06);
}

.card h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

.customer-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.customer-source {
  color: var(--muted);
  margin-bottom: 10px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
}

textarea {
  width: 100%;
  min-height: 120px;
  padding: 12px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 12px;
  font: inherit;
}

.actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

button {
  border: 0;
  border-radius: 12px;
  background: var(--brand);
  color: #fff;
  padding: 10px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button.ghost {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.answer {
  margin: 0;
  white-space: pre-wrap;
  font: inherit;
  line-height: 1.6;
}

.answer.empty {
  color: var(--muted);
}

.risk-list,
.reference-list {
  margin: 0;
  padding-left: 20px;
  line-height: 1.7;
}