:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --border: #e3e2dc;
  --text: #1a1a1a;
  --muted: #777;
  --accent: #f6821f;
  --accent-soft: #fdeeda;
  --on: #0f6e56;
  --on-soft: #e1f5ee;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

h1 { margin: 0; font-size: 18px; font-weight: 600; }
h2 { font-size: 15px; font-weight: 600; margin: 0 0 12px; }

.me { color: var(--muted); font-size: 13px; }

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.panel-head h2 { margin: 0; }

.actions { display: flex; gap: 8px; }

button {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
}
button:hover { border-color: var(--accent); color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 8px;
}

.card {
  padding: 10px 6px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  user-select: none;
}
.card.on {
  background: var(--on-soft);
  border-color: var(--on);
  color: var(--on);
  font-weight: 600;
}

.hint { color: var(--muted); font-size: 13px; margin: 0 0 12px; }

.detail-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.detail-head strong { font-size: 15px; }
.detail-head span { color: var(--muted); font-size: 12px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
.mono { font-family: ui-monospace, "SF Mono", Consolas, monospace; }

.form {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  align-items: end;
}
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.form input, .form select {
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text);
  background: var(--panel);
}

.sub-result { margin-top: 16px; }
.sub-result pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  overflow-x: auto;
  font-size: 12px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a1a;
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  z-index: 100;
}