:root {
  --bg: #f4f1ea;
  --ink: #23201a;
  --accent: #c4552d;
  --card: #fffdf8;
  --line: #ddd6c8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}
header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--line);
}
header a { color: var(--ink); text-decoration: none; }
header .logo { font-size: 1.3rem; font-weight: bold; }
header .logo em { color: var(--accent); }
main { max-width: 860px; margin: 0 auto; padding: 2rem; }
h1 { font-size: 2rem; }
h1 em { color: var(--accent); }
.tagline { font-size: 1.1rem; color: #5a5344; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.1rem;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 0.3rem; }
.card p { margin: 0; font-size: 0.9rem; color: #5a5344; }
.card .pro-badge {
  font-size: 0.7rem;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  vertical-align: middle;
  font-family: sans-serif;
}
.tool {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.5rem;
  margin-top: 1.5rem;
}
input[type="file"], input[type="text"], input[type="password"], select, textarea {
  font: inherit;
  padding: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  width: 100%;
  margin: 0.4rem 0 1rem;
  background: #fff;
}
button {
  font: inherit;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.6rem 1.4rem;
  cursor: pointer;
}
button:hover { filter: brightness(1.08); }
.status { margin-top: 1rem; color: #5a5344; }
.status.error { color: #a02020; }
.ad-slot {
  margin: 2rem 0;
  padding: 1.2rem;
  border: 1px dashed var(--line);
  border-radius: 8px;
  text-align: center;
  color: #a89f8c;
  font-family: sans-serif;
  font-size: 0.85rem;
}
.pro-banner {
  background: var(--ink);
  color: var(--bg);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
}
.pro-banner a { color: #f0b48f; }
.chat-log { max-height: 50vh; overflow-y: auto; margin-bottom: 1rem; }
.msg { padding: 0.6rem 0.9rem; border-radius: 8px; margin: 0.5rem 0; white-space: pre-wrap; }
.msg.user { background: #ece6d8; }
.msg.assistant { background: var(--card); border: 1px solid var(--line); }
footer { text-align: center; padding: 2rem; color: #a89f8c; font-size: 0.85rem; }