/* Tencent Design tokens — shared across ecosystem */
:root {
  --td-brand: #0052d9;
  --td-brand-hover: #266fe8;
  --td-brand-active: #003cab;
  --td-bg: #f3f3f3;
  --td-surface: #ffffff;
  --td-text: rgba(0, 0, 0, 0.9);
  --td-text-secondary: rgba(0, 0, 0, 0.6);
  --td-border: #e7e7e7;
  --td-radius: 12px;
  --td-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  --td-safe-bottom: env(safe-area-inset-bottom, 0px);
  --td-tabbar-h: 56px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

.tl-app {
  min-height: 100dvh;
  background: var(--td-bg);
  color: var(--td-text);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

.tl-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--td-border);
}

.tl-topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.tl-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.tl-brand strong {
  display: block;
  font-size: 16px;
  line-height: 1.2;
}

.tl-brand small {
  display: block;
  font-size: 11px;
  color: var(--td-text-secondary);
}

.tl-desktop-nav {
  display: none;
  gap: 8px;
}

.tl-desktop-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--td-text-secondary);
  font-size: 14px;
}

.tl-desktop-nav a.is-active,
.tl-desktop-nav a:hover {
  color: var(--td-brand);
  background: rgba(0, 82, 217, 0.08);
}

.tl-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 16px calc(var(--td-tabbar-h) + var(--td-safe-bottom) + 16px);
}

.tl-mobile-tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  min-height: var(--td-tabbar-h);
  padding-bottom: var(--td-safe-bottom);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--td-border);
}

.tl-mobile-tabbar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 4px;
  font-size: 10px;
  color: var(--td-text-secondary);
  text-decoration: none;
}

.tl-mobile-tabbar a.is-active {
  color: var(--td-brand);
}

.tl-card {
  background: var(--td-surface);
  border-radius: var(--td-radius);
  box-shadow: var(--td-shadow);
  border: 1px solid var(--td-border);
}

.tl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 0 16px;
  border: none;
  border-radius: 8px;
  background: var(--td-brand);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}

.tl-btn:hover {
  background: var(--td-brand-hover);
}

.tl-btn--ghost {
  background: transparent;
  color: var(--td-brand);
  border: 1px solid var(--td-brand);
}

.safe-bottom {
  padding-bottom: calc(var(--td-tabbar-h) + var(--td-safe-bottom));
}

@media (min-width: 768px) {
  .tl-desktop-nav {
    display: flex;
  }

  .tl-mobile-tabbar {
    display: none;
  }

  .tl-main {
    padding-bottom: 24px;
  }
}