:root {
  --bg: #f4f6f8;
  --card: #fff;
  --ink: #1a1f24;
  --muted: #5b6570;
  --line: #d8dee6;
  --accent: #0072b2;
  --accent-2: #009e73;
  --warn: #e69f00;
  --danger: #d55e00;
  --radius: 10px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 1rem; }
.top {
  background: linear-gradient(120deg, #0b3d5c, #0072b2 55%, #009e73);
  color: #fff;
  padding: 1.6rem 0 1.4rem;
  margin-bottom: 1.2rem;
}
.top h1 { margin: 0 0 0.25rem; font-size: 1.55rem; font-weight: 650; }
.sub { margin: 0; opacity: 0.92; font-size: 0.95rem; }
.notice {
  background: #fff8e8;
  border: 1px solid #f0d58a;
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  margin-bottom: 1rem;
  color: #4a3b10;
  font-size: 0.92rem;
}
.notice ul { margin: 0.4rem 0 0; padding-left: 1.2rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem 1.3rem;
  margin-bottom: 1rem;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
fieldset {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem 1rem;
}
legend { padding: 0 0.35rem; font-weight: 600; color: #243040; }
.type-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  background: #fafbfc;
  font-size: 0.92rem;
}
.chip:has(input:checked) {
  border-color: var(--accent);
  background: #e8f4fb;
  color: #034866;
  font-weight: 600;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1rem;
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
}
.grid label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.88rem; color: var(--muted); }
.grid label.span2 { grid-column: 1 / -1; }
.grid label.check { flex-direction: row; align-items: center; margin-top: 1.4rem; color: var(--ink); }
input[type="text"], select {
  font: inherit;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fff;
}
input[type="color"] {
  width: 2.2rem; height: 2rem; padding: 0; border: 1px solid var(--line); border-radius: 4px; vertical-align: middle;
}
.drop {
  position: relative;
  border: 1.5px dashed #9db5c7;
  border-radius: 8px;
  padding: 1.2rem;
  text-align: center;
  background: #f7fbfe;
}
.drop input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.drop.drag { border-color: var(--accent); background: #e8f4fb; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0.35rem 0 0; }
.actions { display: flex; align-items: center; gap: 0.85rem; flex-wrap: wrap; }
button.primary {
  appearance: none;
  border: none;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  padding: 0.55rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
}
button.primary:disabled { opacity: 0.55; cursor: wait; }
button.primary:hover:not(:disabled) { background: #015a8c; }
.status { color: var(--muted); font-size: 0.9rem; }
.status.err { color: var(--danger); }
.status.ok { color: var(--accent-2); }
.result img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.downloads { margin-top: 0.8rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.downloads a {
  display: inline-block;
  padding: 0.35rem 0.7rem;
  border-radius: 6px;
  background: #eef3f7;
  color: #034866;
  text-decoration: none;
  font-size: 0.88rem;
  border: 1px solid var(--line);
}
.downloads a:hover { background: #e0ebf3; }
.hidden { display: none !important; }
.foot { color: var(--muted); font-size: 0.82rem; padding: 0.5rem 1rem 2rem; }
code { background: #f0f2f5; padding: 0.05rem 0.3rem; border-radius: 3px; font-size: 0.9em; }