* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--pc-ink);
  background: var(--pc-bg);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.content-nav {
  min-height: 72px;
  padding: 12px max(24px, calc((100vw - 1120px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--pc-line);
  background: color-mix(in srgb, var(--pc-panel) 92%, transparent);
  backdrop-filter: blur(18px);
}
.content-brand { color: var(--pc-ink); font-size: 20px; font-weight: 800; text-decoration: none; }
.content-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.content-links a { color: var(--pc-muted); font-size: 14px; font-weight: 650; text-decoration: none; }
.content-links a:hover { color: var(--pc-accent); }
.theme-toggle { display: inline-flex; padding: 4px; gap: 4px; border: 1px solid var(--pc-line); border-radius: 12px; background: var(--pc-panel-soft); }
.theme-toggle button { min-height: 34px; padding: 7px 10px; border: 0; border-radius: 8px; color: var(--pc-muted); background: transparent; cursor: pointer; }
.theme-toggle button.selected { color: #fff !important; background: var(--pc-accent-strong) !important; }
.content-hero { padding: 72px 24px 48px; text-align: center; border-bottom: 1px solid var(--pc-line); background: linear-gradient(135deg, var(--pc-panel-soft), var(--pc-bg)); }
.content-hero .eyebrow { color: var(--pc-accent); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.content-hero h1 { max-width: 800px; margin: 10px auto 14px; font-size: clamp(34px, 6vw, 56px); line-height: 1.05; }
.content-hero p { max-width: 720px; margin: 0 auto; color: var(--pc-muted); font-size: 17px; line-height: 1.7; }
.content-main { width: min(880px, calc(100% - 40px)); margin: 44px auto 72px; }
.content-main.wide { width: min(1120px, calc(100% - 40px)); }
.content-card { padding: 28px; border: 1px solid var(--pc-line); border-radius: var(--pc-radius-lg); background: var(--pc-panel); box-shadow: var(--pc-shadow); }
.content-card + .content-card { margin-top: 18px; }
.content-card h2 { margin: 0 0 12px; font-size: 22px; }
.content-card h3 { margin: 24px 0 8px; font-size: 17px; }
.content-card p, .content-card li { color: var(--pc-muted); line-height: 1.75; }
.content-card a { color: var(--pc-accent-strong); }
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.content-grid .content-card { margin: 0; }
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form .full { grid-column: 1 / -1; }
.contact-form label { display: grid; gap: 7px; color: var(--pc-ink); font-size: 14px; font-weight: 700; }
.contact-form input, .contact-form textarea, .contact-form select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--pc-line); border-radius: 12px;
  color: var(--pc-ink); background: var(--pc-panel-soft); font: inherit;
}
.contact-form textarea { min-height: 150px; resize: vertical; }
.contact-form .honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.primary-action { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 18px; border: 0; border-radius: 12px; color: #fff; background: linear-gradient(135deg, #8b5cf6, #6366f1); font: inherit; font-weight: 800; cursor: pointer; }
.primary-action[disabled] { opacity: .6; cursor: wait; }
.form-status { min-height: 24px; margin: 0; color: var(--pc-muted); }
.form-status.success { color: var(--pc-success); }
.form-status.error { color: var(--pc-danger); }
.content-footer { padding: 28px 24px; color: var(--pc-muted); text-align: center; border-top: 1px solid var(--pc-line); background: var(--pc-panel); }
.content-footer a { color: inherit; }
@media (max-width: 780px) {
  .content-links a:not(.keep-mobile) { display: none; }
  .content-grid, .contact-form { grid-template-columns: 1fr; }
  .contact-form .full { grid-column: auto; }
  .content-hero { padding-top: 48px; }
  .content-card { padding: 22px; }
}