:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --primary: #4f6ef7;
  --primary-soft: #eef1ff;
  --text: #24292f;
  --muted: #6b7280;
  --border: #e5e7eb;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.hero {
  text-align: center;
  padding: 40px 16px 20px;
}
.hero h1 { margin: 0 0 6px; font-size: 28px; }
.hero p { margin: 0; color: var(--muted); }

/* ---------- 分组筛选 + 搜索 ---------- */
.toolbar {
  max-width: 900px;
  margin: 18px auto 0;
  padding: 0 16px;
}
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-wrap .search-icon {
  position: absolute;
  left: 14px;
  font-size: 15px;
  pointer-events: none;
  opacity: .7;
}
#tool-search {
  width: 100%;
  padding: 11px 40px 11px 40px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
#tool-search:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
#tool-search::-webkit-search-cancel-button { display: none; }
.search-clear {
  position: absolute;
  right: 10px;
  border: 0;
  background: #eef0f4;
  color: var(--muted);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
}
.cats {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.cat {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 5px 15px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  color: var(--muted);
  transition: all .15s;
}
.cat:hover { border-color: var(--primary); color: var(--primary); }
.cat.active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); font-weight: 600; }
.nav-empty {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  margin: 14px 0 0;
}
/* ---------- 联系作者 / 定制开发入口 ---------- */
.cta {
  max-width: 780px;
  margin: 8px auto 24px;
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--primary-soft), #ffffff);
  border: 1px solid #d9defa;
  border-radius: var(--radius);
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-text { display: flex; flex-direction: column; gap: 2px; font-size: 14px; }
.cta-text strong { font-size: 15px; }
.cta-text span { color: var(--muted); font-size: 13px; }
.cta-actions { display: flex; gap: 8px; flex-shrink: 0; }
.cta-detail {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed #d9defa;
  font-size: 14px;
  color: var(--muted);
}
.cta-note { margin: 0 0 8px; color: var(--text); }
.cta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0;
}
.cta-label { color: var(--muted); font-size: 13px; min-width: 32px; }
.cta-item code {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 10px;
  font-family: ui-monospace, Consolas, monospace;
  word-break: break-all;
}
@media (max-width: 560px) {
  .cta-inner { flex-direction: column; align-items: stretch; }
  .cta-actions { justify-content: flex-start; }
}

.hint { color: var(--muted); font-size: 12px; font-weight: normal; }
label.inline { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
label.inline select { width: auto; padding: 6px 10px; }

.tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 14px auto 8px;
  flex-wrap: wrap;
  padding: 0 12px;
}
.tab {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 15px;
  color: var(--text);
  transition: all .15s;
}
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.tab-gear { padding: 9px 13px; }

main {
  max-width: 780px;
  margin: 16px auto 40px;
  padding: 0 16px;
}
.panel {
  display: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.panel.active { display: block; }
.panel h2 { margin: 0 0 4px; font-size: 20px; }
.panel h3 { margin: 18px 0 8px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.tip { color: var(--muted); font-size: 14px; margin: 4px 0 16px; }

textarea, input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: #fbfbfd;
  color: var(--text);
}
textarea:focus, input:focus, select:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; margin-bottom: 16px; }
.grid2 label { font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 6px; }
.grid2 .span2 { grid-column: span 2; }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } .grid2 .span2 { grid-column: span 1; } }

.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 6px 0; }
.btn {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 9px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  transition: all .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { opacity: .9; color: #fff; }
.btn.ai { background: linear-gradient(90deg,#7c4dff,#4f6ef7); border: none; color: #fff; }
.btn.mini { padding: 2px 10px; font-size: 12px; border-radius: 6px; }

.stats { color: var(--muted); font-size: 13px; }
.result { margin-top: 16px; border-top: 1px dashed var(--border); padding-top: 8px; }
.hidden { display: none !important; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  user-select: none;
}
.chip:hover { background: var(--primary); color: #fff; }

.text-block {
  background: #fbfbfd;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.file-input {
  padding: 8px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: #fbfbfd;
  font-size: 14px;
  width: 100%;
}
.img-preview {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
  margin-bottom: 12px;
}
.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 14px;
  font-size: 14px;
}
.checks label { display: flex; align-items: center; gap: 6px; color: var(--text); }
.checks input { width: auto; }

.pwd-list { display: flex; flex-direction: column; gap: 8px; }
.pwd-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: #fbfbfd;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 14px;
  word-break: break-all;
}

mark {
  background: #fde68a;
  color: inherit;
  border-radius: 3px;
  padding: 0 2px;
}
.md-preview h1, .md-preview h2, .md-preview h3 { margin: 12px 0 6px; }
.md-preview p { margin: 6px 0; }
.md-preview ul, .md-preview ol { margin: 6px 0 6px 22px; }
.md-preview code { background: #f1f5f9; padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.md-preview pre { background: #f1f5f9; padding: 10px; border-radius: 6px; overflow-x: auto; }
.md-preview blockquote {
  border-left: 3px solid var(--primary);
  padding-left: 10px;
  color: var(--muted);
  margin: 6px 0;
}

.diff-box { padding: 0; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.diff-line { padding: 3px 10px; white-space: pre-wrap; word-break: break-all; }
.diff-add { background: #dcfce7; color: #166534; }
.diff-del { background: #fee2e2; color: #991b1b; }
.diff-same { color: var(--muted); }

.swatch {
  height: 64px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  margin-bottom: 12px;
  background: #f1f5f9;
  transition: background .15s;
}

.hot-hint {
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 0;
}

.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(36,41,47,.9);
  color: #fff;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  z-index: 99;
}
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 20px 0 32px; }