:root {
  --bg: #f7f4ed;
  --card: #fffdf8;
  --text: #1f1f1f;
  --muted: #6a6a6a;
  --accent: #0f766e;
  --border: #d9d3c5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Noto Sans SC", "PingFang SC", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, #fff5dd 0%, var(--bg) 45%);
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px 24px;
}

h1 {
  margin: 0 0 12px;
  font-weight: 700;
}

p {
  color: var(--muted);
  line-height: 1.5;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  margin: 14px 0;
}

.section-title {
  margin: 0 0 10px;
  font-size: 18px;
}

.downloads {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.download-btn {
  display: inline-block;
  text-decoration: none;
  text-align: center;
  border: none;
  border-radius: 10px;
  background: #0f766e;
  color: #fff;
  padding: 12px;
  font-weight: 700;
}

.download-btn:hover {
  filter: brightness(1.07);
}

.hint {
  margin-top: 10px;
  font-size: 13px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
}

input {
  width: 100%;
  margin-top: 6px;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font: inherit;
}

.actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin: 8px 0 0;
}

button {
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  padding: 12px;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.07);
}

#output {
  background: #101215;
  color: #e7edf3;
  border-radius: 12px;
  min-height: 240px;
  padding: 14px;
  overflow: auto;
}

.lan-info {
  margin-top: 10px;
  padding: 10px;
  border-radius: 8px;
  border: 1px dashed var(--border);
  font-size: 14px;
  color: #1e293b;
  background: #f8fafc;
  line-height: 1.6;
  word-break: break-word;
}

.lan-info code {
  background: #ecfeff;
  padding: 2px 6px;
  border-radius: 6px;
}