:root {
  color-scheme: light;
  --bg-1: #f4f7ff;
  --bg-2: #eef3ff;
  --card: rgba(255,255,255,0.88);
  --card-strong: #ffffff;
  --card-soft: #f7f9ff;
  --border: #d9e1f0;
  --text: #1b2430;
  --muted: #5e6a7f;
  --accent: #356dff;
  --accent-2: #6b8dff;
  --accent-soft: #eef3ff;
  --success: #1d7f49;
  --success-bg: #eefbf3;
  --danger: #a72828;
  --danger-bg: #fff3f3;
  --shadow: 0 16px 36px rgba(53, 78, 128, 0.12);
  --shadow-soft: 0 10px 24px rgba(53, 78, 128, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(107,141,255,0.18), transparent 30%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, p, pre { margin: 0; }
.page-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}
.page-stack,
.panel-stack {
  display: grid;
  gap: 18px;
}
.panel-card {
  background: var(--card);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.75);
  box-shadow: var(--shadow);
  border-radius: var(--radius-xl);
  padding: 22px;
}
.panel-card--narrow {
  max-width: 980px;
}
.page-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin-bottom: 12px;
}
.page-title--small {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  margin-bottom: 8px;
}
.page-lead,
.text-muted {
  color: var(--muted);
}
.section-title {
  font-size: 1.16rem;
  margin-bottom: 14px;
}
.section-subtitle {
  font-size: 1rem;
  margin-bottom: 10px;
}
.section-header,
.page-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.page-toolbar--footer {
  margin-top: 18px;
}
.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 800;
}
.text-input,
.code-area {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
  color: var(--text);
}
.text-input {
  padding: 15px 16px;
  font-size: 16px;
  box-shadow: inset 0 1px 2px rgba(27, 36, 48, 0.04);
}
.code-area {
  min-height: 340px;
  padding: 14px 15px;
  resize: vertical;
  font: 14px/1.58 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--card-soft);
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.button-row--top-gap {
  margin-top: 12px;
}
.button-link,
button.button-link {
  appearance: none;
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: .15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.button-link--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: 0 12px 20px rgba(53,109,255,0.2);
}
.button-link--secondary {
  color: #234ba9;
  background: var(--accent-soft);
}
.button-link--ghost {
  color: var(--accent);
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border);
}
.button-link--primary:hover { transform: translateY(-1px); }
.status-box {
  display: none;
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid transparent;
  box-shadow: var(--shadow-soft);
}
.status-box.is-visible { display: block; }
.status-box--info { background: #eef4ff; border-color: #c9dafd; color: #2458be; }
.status-box--success { background: var(--success-bg); border-color: #bfe4cc; color: var(--success); }
.status-box--error { background: var(--danger-bg); border-color: #efc0c0; color: var(--danger); }
.status-detail,
.section-gap { margin-top: 12px; }
.summary-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.summary-grid--triple {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.summary-card,
.section-box {
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.74);
  padding: 16px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}
.summary-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}
.summary-value,
.summary-card a {
  display: block;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: anywhere;
}
.inline-code-box,
.text-output-block,
.preformatted-block {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 14px/1.58 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.text-output-block {
  max-height: 72vh;
  overflow: auto;
}
.preformatted-block {
  margin: 0;
}
.details-summary {
  cursor: pointer;
  font-weight: 800;
  color: #234ba9;
}
.section-box--top-gap {
  margin-top: 14px;
}
@media (max-width: 860px) {
  .summary-grid,
  .summary-grid--triple {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 700px) {
  .page-wrap { padding: 14px 10px 32px; }
  .panel-card { padding: 16px; border-radius: 20px; }
  .code-area { min-height: 250px; }
  .button-row > *,
  .page-toolbar > * { width: 100%; }
  .button-link { width: 100%; }
}