* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f7f8;
  color: #17202a;
  line-height: 1.6;
}
.page {
  width: min(760px, calc(100% - 32px));
  margin: 64px auto;
  background: #fff;
  padding: 48px;
  border: 1px solid #e3e6e8;
  border-radius: 16px;
}
.brand-block { display: flex; align-items: center; gap: 10px; }
.brand-logo { flex-shrink: 0; }
.brand { font-size: 13px; font-weight: 700; letter-spacing: .08em; margin: 0; }
h1 { font-size: clamp(24px, 3.1vw, 29px); line-height: 1.12; margin: 12px 0 20px; white-space: nowrap; }
h2 { margin-top: 36px; font-size: 23px; }
.lead { font-size: 19px; }
.meanings { padding-left: 22px; }
.meanings li { margin: 10px 0; }
.cta { margin-top: 38px; }
.cta a {
  display: inline-block;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  background: #17202a;
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
}
.cta a:hover { background: #2c3844; }
.cta p { margin-bottom: 0; }
.source { margin-top: 32px; font-size: 14px; color: #5d6770; }
.model-lookup { margin-top: 38px; padding-top: 28px; border-top: 1px solid #e3e6e8; }
.model-lookup label { display: block; font-weight: 700; margin-bottom: 8px; }
.model-lookup input {
  box-sizing: border-box;
  width: 100%;
  font-size: 16px;
  padding: 10px 12px;
  border: 1px solid #c7ccd1;
  border-radius: 8px;
  background: #fff;
}
.model-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 4px;
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid #c7ccd1;
  border-radius: 8px;
}
.model-list[hidden] { display: none; }
.model-list button {
  display: block;
  width: 100%;
  text-align: left;
  font: inherit;
  font-size: 15px;
  padding: 8px 10px;
  border: 0;
  border-radius: 6px;
  background: none;
  cursor: pointer;
}
.model-list button:hover,
.model-list button:focus { background: #f0f4f2; outline: none; }
.model-empty { margin-top: 10px; font-size: 14px; color: #5f666d; }
.model-lookup select {
  width: 100%;
  font-size: 16px;
  padding: 10px 12px;
  border: 1px solid #c7ccd1;
  border-radius: 8px;
  background: #fff;
}
.model-result {
  margin-top: 18px;
  padding: 16px 18px;
  background: #f0f4f2;
  border: 1px solid #d3ddd8;
  border-radius: 10px;
}
.model-result p { margin: 6px 0; }
.model-result p:first-child { font-weight: 700; margin-top: 0; }
.model-error { margin-top: 14px; font-size: 14px; color: #a13a3a; }
@media (max-width: 600px) {
  .page { margin: 0; width: 100%; min-height: 100vh; padding: 28px 20px; border: 0; border-radius: 0; }
  h1 { white-space: normal; font-size: 26px; line-height: 1.15; margin-bottom: 18px; }
  h2 { font-size: 21px; line-height: 1.25; margin-top: 30px; }
  .lead { font-size: 17px; line-height: 1.5; text-align: justify; }
}