* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--oioiob-bg);
  color: var(--oioiob-text);
  font-family: var(--oioiob-font);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

.oioiob-shell { min-height: 100vh; display: flex; flex-direction: column; }

.oioiob-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--oioiob-surface);
  border-bottom: 1px solid var(--oioiob-border);
}

.oioiob-topbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.oioiob-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--oioiob-border);
  border-radius: 8px;
  background: var(--oioiob-bg);
  color: var(--oioiob-text);
  font-size: 1.125rem;
  cursor: pointer;
}

.oioiob-menu-btn:hover { background: var(--oioiob-accent-soft); }

.oioiob-brand-text { font-weight: 700; font-size: 1.125rem; }

.oioiob-top-links {
  display: flex;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--oioiob-muted);
}

.oioiob-body {
  flex: 1;
  display: grid;
  grid-template-columns: var(--oioiob-sidebar-w) 1fr;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

.oioiob-main {
  min-width: 0;
  padding: 24px;
}

.oioiob-content { max-width: 1100px; }

.oioiob-hero { margin-bottom: 28px; }
.oioiob-hero-title { margin: 0 0 8px; font-size: 1.75rem; }
.oioiob-hero-desc { margin: 0; color: var(--oioiob-muted); }

.oioiob-section { margin-bottom: 32px; }
.oioiob-section-title,
.oioiob-page-title {
  margin: 0 0 16px;
  font-size: 1.125rem;
  font-weight: 600;
}

.oioiob-empty { color: var(--oioiob-muted); padding: 24px 0; }

@media (max-width: 960px) {
  .oioiob-body { grid-template-columns: 1fr; }
  .oioiob-menu-btn { display: inline-flex; }
  .oioiob-main { padding: 16px; }
}