/* Seller Toolkit HUB — adapted from ~/workspace/seller-toolkit/style.css
   (warm off-white background, near-black text, ONE violet accent for
   primary actions, pill buttons, large card radius, generous spacing).
   Mobile-first: cards stack on phones. No sticky navigation anywhere. */
* { box-sizing: border-box; }
:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --ink: #161616;
  --muted: #636363;
  --line: #e8e4dc;
  --line-soft: #f1efe9;
  --accent: #5b4dff;
  --accent-dark: #4638d8;
  --accent-soft: #efedff;
  --accent-line: #ddd6ff;
  --shadow-card: 0 1px 2px rgba(22, 22, 22, 0.06), 0 12px 32px rgba(22, 22, 22, 0.06);
}
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
}
.brand-name { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }
.brand-name::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  margin-right: 10px;
  vertical-align: -4px;
  background: linear-gradient(135deg, #5b4dff 0%, #ff8a3d 55%, #ffc93d 100%);
}
.brand-sub { font-size: 13px; color: var(--muted); margin-top: 2px; }
.top-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
button {
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 11px 18px;
  font-size: 15px;
  font-weight: 600;
}
button:hover { border-color: #cfccc2; }
button:disabled { opacity: 0.5; cursor: default; }
button:focus-visible, a:focus-visible {
  outline: 3px solid rgba(91, 77, 255, 0.25);
  outline-offset: 1px;
}
#userLabel { font-weight: 700; font-size: 14px; }
main { max-width: 1080px; margin: 0 auto; padding: 20px 16px 40px; }
.demo-notice {
  background: #fff8e1;
  border: 1px solid #ffe08a;
  border-radius: 12px;
  padding: 12px 16px;
  margin: 0 0 20px;
  font-size: 15px;
}
.hero { margin: 8px 0 24px; }
h1 { font-size: 28px; margin: 0 0 8px; letter-spacing: -0.02em; line-height: 1.15; }
h2 { font-size: 19px; margin: 0 0 8px; letter-spacing: -0.01em; }
.lead { color: var(--muted); margin: 0; font-size: 16px; }
.tool-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.tool-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
}
.tool-icon { font-size: 32px; line-height: 1; margin-bottom: 12px; }
.tool-benefit { margin: 0 0 12px; font-size: 16px; }
.price-note {
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 600;
  margin: 0 0 4px;
}
.tool-btn {
  display: block;
  width: 100%;
  text-align: center;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  border-radius: 999px;
  font-weight: 700;
  font-size: 16px;
  padding: 15px 22px;
  margin-top: 16px;
  box-shadow: 0 6px 16px rgba(91, 77, 255, 0.28);
}
.tool-btn:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.hint { color: var(--muted); font-size: 14px; }
.how-it-works {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px 20px;
  margin-top: 24px;
  box-shadow: var(--shadow-card);
}
.how-it-works ol { margin: 12px 0; padding-left: 22px; }
.how-it-works li { margin-bottom: 6px; }
.footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 16px 32px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}
@media (max-width: 480px) {
  .brand-name { font-size: 20px; }
  main { padding: 14px 12px 32px; }
  h1 { font-size: 26px; }
  .tool-card, .how-it-works { padding: 20px 16px; }
}
@media (min-width: 768px) {
  main { padding: 28px 20px 48px; }
  h1 { font-size: 32px; }
  .tool-grid { grid-template-columns: repeat(3, 1fr); }
}