:root {
  color-scheme: light;
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  color: #182233;
  background: #f3f5f8;
  font-size: 14px;
}
* { box-sizing: border-box; }
body { margin: 0; }
[hidden] { display: none !important; }
a { color: #2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .55; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
.entry-shell { width: min(100%, 476px); margin: 0 auto; padding: 56px 20px; }
.brand { display: inline-block; margin-bottom: 24px; font-size: 20px; font-weight: 700; color: #182233; }
.entry-card { padding: 28px; border: 1px solid #dde4ed; border-radius: 12px; background: #fff; box-shadow: 0 10px 32px #18223308; }
h1, p { margin: 0; }
h1 { margin-top: 7px; font-size: 25px; line-height: 1.4; }
.eyebrow { color: #637184; font-size: 12px; }
.intro { margin-top: 12px; line-height: 1.7; color: #637184; }
.status { min-height: 42px; margin: 20px 0 16px; padding: 10px 12px; border: 1px solid #dde4ed; border-radius: 6px; color: #637184; background: #f8fafc; line-height: 1.5; overflow-wrap: anywhere; }
.status[data-tone="error"] { color: #b42331; border-color: #ebccd0; background: #fff5f5; }
.status[data-tone="success"] { color: #147d57; border-color: #c7e0d6; background: #f0f8f4; }
form { display: grid; gap: 9px; }
label { font-weight: 600; }
input { width: 100%; min-height: 44px; margin-bottom: 10px; padding: 10px 12px; border: 1px solid #cdd6e2; border-radius: 6px; color: #182233; background: #fff; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 14px; border: 1px solid #dde4ed; border-radius: 6px; background: #fff; color: #182233; text-align: center; line-height: 1.5; }
.button:hover { text-decoration: none; }
.button-primary { color: #fff; border-color: #2563eb; background: #2563eb; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.session-copy { line-height: 1.7; overflow-wrap: anywhere; }
.entry-note { margin-top: 24px; padding-top: 18px; border-top: 1px solid #e8edf3; font-size: 12px; line-height: 1.8; color: #637184; }
.demo-entry { margin-top: 20px; line-height: 1.8; }
.demo-entry span { display: block; font-size: 12px; color: #637184; }
@media (max-width: 440px) {
  .entry-shell { padding: 28px 16px; }
  .entry-card { padding: 22px 18px; }
  .actions { flex-direction: column; }
  .actions .button { width: 100%; }
  h1 { font-size: 23px; }
}