:root {
  color-scheme: light;
  font-family: "Noto Sans TC", "Inter", system-ui, sans-serif;
  line-height: 1.5;
  --bg: #f5f6fa;
  --card: #ffffff;
  --text: #1d2129;
  --muted: #5f6773;
  --primary: #2f70ff;
  --border: #e3e6ed;
  --shadow: 0 12px 30px rgba(24, 39, 75, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.hero {
  display: flex;
  gap: 32px;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 8px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 40px);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 520px;
}

.hero-card {
  background: var(--card);
  padding: 20px 24px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  flex: 1;
  min-width: 260px;
}

.hero-card ol {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.panel {
  background: var(--card);
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.panel--full {
  grid-column: 1 / -1;
}

.panel h2 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 18px;
}

.panel-subtitle {
  margin: -8px 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.form {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input,
select,
textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 14px;
  background: #fff;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form button {
  border: none;
  background: var(--primary);
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.form button:active {
  transform: scale(0.98);
}

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

.suggestions button {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
}

.suggestions button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.output {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 12px;
  border-radius: 12px;
  background: #f0f4ff;
  font-weight: 600;
  color: var(--primary);
  word-break: break-all;
}

.output button {
  border: none;
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

.output button:active {
  transform: scale(0.98);
}

.output-stack {
  align-items: stretch;
  font-weight: 500;
  color: var(--text);
  white-space: pre-line;
  flex-direction: column;
  gap: 12px;
}

.output-master {
  white-space: pre-wrap;
  line-height: 1.7;
  font-size: 14px;
  max-height: 360px;
  overflow: auto;
}

.output-master div {
  width: 100%;
}

div[data-output="promo"] {
  width: 100%;
  flex: 1;
}

.copy-item {
  width: 100%;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 12px 14px;
  box-shadow: 0 8px 20px rgba(24, 39, 75, 0.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.copy-item + .copy-item {
  margin-top: 12px;
}

.copy-item p {
  margin: 6px 0 0;
}

.copy-content {
  width: 100%;
}

.copy-actions {
  display: flex;
  justify-content: flex-end;
}

.copy-button {
  border: none;
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

.copy-button:active {
  transform: scale(0.98);
}

.copy-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

@media (max-width: 720px) {
  .copy-actions {
    width: 100%;
  }

  .copy-button {
    width: 100%;
  }
}

@media (max-width: 900px) {
  .container {
    padding: 32px 18px 64px;
  }

  .hero {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-card {
    width: 100%;
  }

  .subtitle {
    max-width: 100%;
  }
}

.table-panel {
  margin-top: 28px;
}

.table-panel table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table-panel th,
.table-panel td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid var(--border);
}

.table-panel th {
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 720px) {
  .output {
    flex-direction: column;
    align-items: flex-start;
  }

  .output button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .panel {
    padding: 16px;
  }

  .suggestions {
    gap: 6px;
  }
}

@media (min-width: 900px) {
  .panel--full .form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}