:root {
  --bg: #eef3f6; --paper: #fbfaf7; --ink: #1c2a32; --muted: #5a6b75;
  --line: #d5dde3; --accent: #2f6f7e; --accent-soft: #d9eef1;
  --warn: #8a4b2d; --danger: #8b2e2e; --ok: #2d6a4f;
  --shadow: 0 10px 30px rgba(28, 42, 50, 0.08);
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: var(--font); color: var(--ink); min-height: 100vh;
  background: radial-gradient(1200px 500px at 10% -10%, #d9eef1 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #f3e9dc 0%, transparent 50%), var(--bg);
}
.wrap { width: min(960px, calc(100% - 2rem)); margin: 0 auto; padding: 1.5rem 0 3rem; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: 16px;
  box-shadow: var(--shadow); padding: 1.25rem 1.35rem; margin-bottom: 1rem;
}
h1, h2, h3 { margin: 0 0 0.6rem; }
h1 { font-size: 1.45rem; } h2 { font-size: 1.1rem; }
.muted { color: var(--muted); font-size: 0.92rem; line-height: 1.5; }
.row { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; }
.grid { display: grid; gap: 0.75rem; }
@media (min-width: 800px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.25rem; }
input, textarea, button { font: inherit; border-radius: 10px; border: 1px solid var(--line); }
input, textarea { width: 100%; padding: 0.7rem 0.8rem; background: #fff; color: var(--ink); }
textarea { min-height: 110px; resize: vertical; }
button { padding: 0.65rem 1rem; background: var(--accent); color: #fff; border: none; cursor: pointer; }
button.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
button.danger { background: var(--danger); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.pill {
  display: inline-flex; padding: 0.2rem 0.55rem; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); font-size: 0.8rem;
}
.pill.warn { background: #f6e6d8; color: var(--warn); }
.pill.danger { background: #f6dede; color: var(--danger); }
.pill.ok { background: #dff0e7; color: var(--ok); }
.item { border: 1px solid var(--line); border-radius: 12px; padding: 0.85rem; background: #fff; }
.item .actions { margin-top: 0.6rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.plane-body {
  white-space: pre-wrap; line-height: 1.55; font-size: 1.05rem; padding: 1rem;
  border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 12px 12px 0;
}
.tip {
  margin-top: 0.75rem; padding: 0.75rem 0.9rem; background: #f6f1ea;
  border-radius: 10px; color: var(--warn); font-size: 0.9rem;
}
.err { color: var(--danger); font-size: 0.9rem; margin-top: 0.5rem; }
.okmsg { color: var(--ok); font-size: 0.9rem; margin-top: 0.5rem; }
code.url {
  display: block; word-break: break-all; padding: 0.6rem 0.75rem; background: #fff;
  border: 1px dashed var(--line); border-radius: 8px; margin: 0.4rem 0; font-size: 0.88rem;
}
.hidden { display: none !important; }
.disclaimer { font-size: 0.8rem; color: var(--muted); margin-top: 0.75rem; }