* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f1f5f9; color: #111827; min-height: 100vh;
}

.layout { display: flex; max-width: 980px; margin: 0 auto; gap: 20px; padding: 28px 20px 80px; }

.side { width: 220px; flex: none; position: sticky; top: 28px; align-self: start; }
.logo { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.logo img { border-radius: 9px; }
.logo h1 { font-size: 16px; }
.logo span { font-size: 11px; color: #9ca3af; }

.side nav { display: grid; gap: 4px; }
.side nav a {
  text-decoration: none; color: #4b5563; font-size: 13.5px;
  padding: 9px 12px; border-radius: 9px; transition: all .15s;
}
.side nav a:hover { background: #e0e7ff; color: #4338ca; }
.side nav a.active { background: #4f46e5; color: #fff; font-weight: 600; }

main { flex: 1; display: grid; gap: 16px; }

.card {
  background: #fff; border: 1px solid #e5e7eb; border-radius: 16px;
  padding: 22px 24px; box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.card h2 { font-size: 15.5px; margin-bottom: 4px; }
.desc { font-size: 12.5px; color: #6b7280; margin-bottom: 16px; line-height: 1.6; }
.desc code, .about code { background: #f3f4f6; padding: 1px 5px; border-radius: 4px; font-size: 11.5px; color: #4f46e5; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
.field { display: grid; gap: 5px; }
.field.wide { grid-column: 1 / -1; }
.field > span { font-size: 12px; font-weight: 600; color: #374151; }
.field input, .field select, textarea {
  padding: 9px 12px; border: 1px solid #e5e7eb; border-radius: 9px;
  font-size: 13.5px; color: #111827; outline: none; background: #fff;
  font-family: inherit; transition: border-color .15s, box-shadow .15s; width: 100%;
}
.field input:focus, .field select:focus, textarea:focus {
  border-color: #8b5cf6; box-shadow: 0 0 0 3px rgba(139,92,246,.13);
}
.keywrap { display: flex; gap: 6px; }
.keywrap input { flex: 1; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.ghost {
  border: 1px solid #e5e7eb; background: #fff; border-radius: 9px;
  cursor: pointer; padding: 0 10px; font-size: 14px;
}
.ghost:hover { background: #f9fafb; }

textarea { resize: vertical; line-height: 1.6; }

.actions { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.btn {
  border: none; cursor: pointer; font-size: 13px; font-weight: 600;
  padding: 9px 18px; border-radius: 9px; background: #eef2ff; color: #4f46e5;
  transition: all .15s;
}
.btn:hover { background: #e0e7ff; }
.btn.primary { background: linear-gradient(135deg, #4f46e5, #8b5cf6); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .55; cursor: wait; }

.test-result { font-size: 12.5px; }
.test-result.ok { color: #10b981; }
.test-result.err { color: #ef4444; white-space: pre-wrap; }

.tips {
  margin-top: 14px; font-size: 12px; color: #6b7280; line-height: 1.7;
  background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 10px; padding: 10px 14px;
}

.about { list-style: none; display: grid; gap: 9px; font-size: 13px; color: #374151; line-height: 1.6; }
.about li::before { content: '✓ '; color: #10b981; font-weight: 700; }
kbd {
  background: #f3f4f6; border: 1px solid #d1d5db; border-bottom-width: 2px;
  border-radius: 5px; padding: 1px 6px; font-size: 11.5px; font-family: inherit;
}

.savebar {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 14px;
  background: #111827; color: #fff; padding: 10px 12px 10px 20px;
  border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,.3);
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s;
}
.savebar.show { opacity: 1; pointer-events: auto; transform: translateX(-50%) translateY(-4px); }
#saveHint { font-size: 12.5px; }

@media (max-width: 720px) {
  .layout { flex-direction: column; }
  .side { width: auto; position: static; }
  .grid2 { grid-template-columns: 1fr; }
}