:root {
  --accent: #2a5bff;
  --fg: #1a1a1a;
  --fg-muted: #5a5a5a;
  --bg: #f7f7f5;
  --card-bg: #ffffff;
  --border: #e4e4e2;
  --font-sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  min-height: 100vh;
}
.app-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.app-header h1 { font-size: 1rem; margin: 0; font-weight: 500; color: var(--fg-muted); }
.app-header .back { color: var(--fg); text-decoration: none; font-size: .9rem; }
.app-header .back:hover { color: var(--accent); }

.app-wrapper { max-width: 760px; margin: 0 auto; padding: 28px 20px 60px; }
.lede { margin: 0 0 24px; color: var(--fg-muted); font-size: .95rem; }

.form-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
textarea {
  width: 100%;
  height: 220px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  resize: vertical;
  background: #fff;
  color: var(--fg);
}
textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(42,91,255,.15); }

.search-field {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.search-field span { color: var(--fg-muted); font-size: .9rem; }
.search-field input {
  flex: 1;
  min-width: 200px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: .95rem;
  font-family: inherit;
}
.search-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(42,91,255,.15); }

.search-result {
  margin-top: 8px;
  font-size: .95rem;
  color: var(--fg-muted);
}
.search-result span {
  color: var(--accent);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
}

.clear-btn {
  display: block;
  margin: 16px auto;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 8px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: .9rem;
  transition: background-color .2s, color .2s;
}
.clear-btn:hover { background: var(--accent); color: #fff; }

.result-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: .92rem;
}
.result-table th, .result-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.result-table th { color: var(--fg-muted); font-weight: 600; background: #fafafa; }
.result-table td:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--accent);
}
.result-table code {
  background: #eef;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: .85em;
}

.wp-content {
  margin: 40px 0 0;
  color: var(--fg-muted);
  line-height: 1.9;
}
.wp-content h2 {
  font-size: 1.1rem;
  color: var(--fg);
  margin: 24px 0 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.wp-content p { margin: 0 0 12px; }
.wp-content ul { padding-left: 1.4em; }
.wp-content .note { font-size: .85rem; opacity: .8; }
.wp-content code { background: #eef; padding: 1px 6px; border-radius: 3px; font-size: .88em; }

@media (max-width: 520px) {
  .app-wrapper { padding: 20px 14px 40px; }
  .form-card { padding: 18px; }
}